rpms/kernel
9
2
Fork 4
Code Issues Pull Requests Releases Activity
49da9ad901
kernel/kernel-arm64.patch
Josh Boyer 223ab06d15 Linux v3.18-rc6
2014-11-24 08:25:40 -05:00

13199 lines
405 KiB
Diff
Raw Blame History

commit ffbe9c488b747686ebfbb35e7c87aec80b183193
Merge: ccdf75c fc14f9c
Author: Kyle McMartin <kmcmarti@redhat.com>
Date: Mon Nov 17 11:34:47 2014 -0500
Merge tag 'v3.18-rc5' into devel
Linux 3.18-rc5
Conflicts:
drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
commit ccdf75caa6a1165b8199930983596ef64cf09bd3
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 17:09:29 2014 -0500
DO NOT UPSTREAM - pci/xgene: Provide fixup for ACPI MCFG support
Xgene doesn't decode bus bits of mmconfig region and only
supports devfn 0 of bus 0. For other buses/devices, some
internal registers need to be poked. This patch provides
a fixup to support ACPI MCFG tables. This is a horrible
hack allowing the hardware to be used for PCI testing, but
it is not intended to be a long term patch.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 4421965a8ea7caae3f50760abce1094e0186c05e
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 17:33:18 2014 -0500
DO NOT UPSTREAM - provide hook for MCFG fixups
This is a temprary mechanism needed by at least one early
arm64 hardware platform with broken MCFG support. This is
not intended for upstream and will go away as soon as newer
hardware with fully compliant ECAM becomes available.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit dcaeb407c91845739a64fb719a8c8d34474371e8
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 17:30:25 2014 -0500
arm64/pci/acpi: initial support for ACPI probing of PCI
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 68c8ee5c1ab7b899401750cc359912efbeb40676
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 17:23:57 2014 -0500
arm64/acpi/pci: add support for parsing MCFG table
Add support for parsing MCFG table and provide functions to read/write
PCI configuration space based on the parsed info. This provides the
low-level raw_pci_read/raw_pci_write functionality.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit fada05b28e93c24e8932539d94a679ce55ff332f
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 16:42:14 2014 -0500
DO NOT UPSTREAM - pci/xgene: workaround CRS issue
CRS is not behaving properly for some reason. Until this
gets diagnosed properly, pretend not to support it in order
to prevent hangs in 3.18 kernel.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit e917d30f3febf6d88cc5001ad236ca367a211cef
Author: Duc Dang <dhdang@apm.com>
Date: Thu Nov 6 17:14:18 2014 -0800
PCI: X-Gene: assign resource to bus before adding new devices
X-Gene PCIE driver currently depends on Liviu Dudau's patch
https://lkml.org/lkml/2014/9/30/166 in order to assign resource
to root bus and endpoint devices. The patch was dropped because
it will break x86, powerpc and probably others. So X-Gene PCIE
host functionality is currently broken.
This patch adds function calls to create and scan root_bus as well
as assign unassigned bus resource (similar to Liviu Dudau's patch
above). This will help resolve the dependency to Liviu Dudau's patch
and make X-Gene PCIE work in latest open-source kernel.
Signed-off-by: Duc Dang <dhdang@apm.com>
Signed-off-by: Tanmay Inamdar <tinamdar@apm.com>
commit 6581c0591cafe4fa3b0bd9a25a84a5bf830209fd
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 16:31:05 2014 -0500
iommu/arm-smmu: fix NULL dereference with ACPI PCI devices
Fix a NULL dereference in find_mmu_master which occurs when
booting with ACPI. In that case, PCI bridges with not have
an of_node. Add a check for NULL of_node and bail out if that
is the case.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit ae7850d2b972ee1258878ccc16824aba9d35b653
Author: Guenter Roeck <linux@roeck-us.net>
Date: Sun Nov 2 18:19:15 2014 -0800
netfilter: nft_reject_bridge: Fix powerpc build error
Fix:
net/bridge/netfilter/nft_reject_bridge.c:
In function 'nft_reject_br_send_v6_unreach':
net/bridge/netfilter/nft_reject_bridge.c:240:3:
error: implicit declaration of function 'csum_ipv6_magic'
csum_ipv6_magic(&nip6h->saddr, &nip6h->daddr,
^
make[3]: *** [net/bridge/netfilter/nft_reject_bridge.o] Error 1
Seen with powerpc:allmodconfig.
Fixes: 523b929d5446 ("netfilter: nft_reject_bridge: don't use IP stack to reject traffic")
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit e2992498e4b2aad3ceac52bfb6faccfd18332236
Author: Mark Salter <msalter@redhat.com>
Date: Mon Nov 10 21:35:11 2014 -0500
DO NOT UPSTREAM - arm64: fix dma_ops for ACPI and PCI devices
Commit 2189064795dc3fb4101e5:
arm64: Implement set_arch_dma_coherent_ops() to replace bus notifiers
removed the bus notifiers from dma-mapping.c. This patch
adds the notifier back for ACPI and PCI devices until a
better permanent solution is worked out.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit ceb5533cf5a6b68b68dc4b8ad61f5671576bdaf2
Author: Mark Salter <msalter@redhat.com>
Date: Thu Aug 14 12:32:13 2014 -0400
acpi: add utility to test for device dma coherency
ACPI 5.1 adds a _CCA object to indicate memory coherency
of a bus master device. It is an integer with zero meaning
non-coherent and one meaning coherent. This attribute may
be inherited from a parent device. It may also be missing
entirely, in which case, an architecture-specific default
is assumed.
This patch adds a utility function to parse a device handle
(and its parents) for a _CCA object and return the coherency
attribute if found.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 21fef5d50bb3d4465c6b644bc451c1d219967a81
Author: Wei Huang <wei@redhat.com>
Date: Thu Sep 18 20:02:57 2014 -0400
KVM/ACPI: Enable ACPI support for KVM virt GIC
This patches enables ACPI support for KVM virtual GIC. KVM parses
ACPI table for virt GIC related information when DT table is not
present. This is done by retrieving the information defined in
generic_interrupt entry of MADT table.
Note: Alexander Spyridakis from Virtual Open System posts a
_very_ similar patch to enable acpi-kvm. This patch borrows some
ideas from his patch.
Signed-off-by: Wei Huang <wei@redhat.com>
commit 3357db72822a2c9bc012528c6be3cf861fb3f35c
Author: Wei Huang <wei@redhat.com>
Date: Thu Sep 18 20:02:56 2014 -0400
KVM/ACPI: Enable ACPI support for virt arch timer
This patches enables ACPI support for KVM virtual arch_timer. It
allows KVM to parse ACPI table for virt arch_timer PPI when DT table
is not present. This is done by retrieving the information from
arch_timer_ppi array in arm_arch_timer driver.
Signed-off-by: Wei Huang <wei@redhat.com>
commit dc62803a26a34bb3190c9c1b5e3639ca6ebbf788
Author: Wei Huang <wei@redhat.com>
Date: Thu Sep 18 20:02:55 2014 -0400
KVM/ACPI: Add kernel parameter kvmacpi to enable KVM ACPI support
This patch addes a new kernel parameter, kvmacpi, to turn on ACPI
support for KVM. Users can enable it using "kvmacpi=on" in command
line. When it is on, KVM will will parse ACPI tables to configure related
components. By default this option is off.
Note that DT will be probed first, no matter kvmacpi is ON or OFF.
This is because many platforms, such qemu/kvm, still supports
DT only. We still want to support Acadia kernel on such platforms.
Signed-off-by: Wei Huang <wei@redhat.com>
commit 18099d49d96bfac5096b8ad1d3d5c6d14f92e0a1
Author: Tom Lendacky <thomas.lendacky@amd.com>
Date: Mon Sep 15 17:02:52 2014 -0600
amd-xgbe: AMD 10GbE driver APCI support for A0
This patch provides ACPI support for the AMD 10GbE device driver
and AMD 10GbE phy driver.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
commit 7f208a9dffd58379f2e42e226052386e93d4b2dd
Author: Mark Salter <msalter@redhat.com>
Date: Tue Oct 7 12:54:08 2014 -0400
xgene acpi network - first cut
commit e3ce87d3414a845f8cbf71f0d80f3f3136995ce6
Author: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Thu Nov 6 12:23:23 2014 +0100
leds: leds-gpio: Fix legacy GPIO number case
In the legacy case, led_dat->gpiod is initialized correctly, but
overwritten later by template->gpiod, which is NULL, causing leds-gpio
to fail with:
gpiod_direction_output: invalid GPIO
leds-gpio: probe of leds-gpio failed with error -22
Move the initialization of led_dat->gpiod from template->gpiod up, and
always use led_dat->gpiod later, to fix this.
Fixes: 5c51277a9ababfa4 (leds: leds-gpio: Add support for GPIO descriptors)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit f22bf3eef963c9fc4e58e9e96dc7e9d243042b5a
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Wed Nov 5 00:29:07 2014 +0100
ACPI / property: Drop size_prop from acpi_dev_get_property_reference()
The size_prop argument of the recently added function
acpi_dev_get_property_reference() is not used by the only current
caller of that function and is very unlikely to be used at any time
going forward.
Namely, for a property whose value is a list of items each containing
a references to a device object possibly accompanied by some integers,
the number of items in the list can always be computed as the number
of elements of type ACPI_TYPE_LOCAL_REFERENCE in the property package.
Thus it should never be necessary to provide an additional "cells"
property with a value equal to the number of items in that list. It
also should never be necessary to provide a "cells" property specifying
how many integers are supposed to be following each reference.
For this reason, drop the size_prop argument from
acpi_dev_get_property_reference() and update its caller accordingly.
Link: http://marc.info/?l=linux-kernel&m=141511255610556&w=2
Suggested-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 1bb8c08673f0ca7951c0583665d2496e19368a56
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Fri Oct 31 13:40:58 2014 +0200
leds: leds-gpio: Convert gpio_blink_set() to use GPIO descriptors
Commit 21f2aae91e902aad ("leds: leds-gpio: Add support for GPIO
descriptors") already converted most of the driver to use GPIO descriptors.
What is still missing is the platform specific hook gpio_blink_set() and
board files which pass legacy GPIO numbers to this driver in platform data.
In this patch we handle the former and convert gpio_blink_set() to take
GPIO descriptor instead. In order to do this we convert the existing four
users to accept GPIO descriptor and translate it to legacy GPIO number in
the platform code. This effectively "pushes" legacy GPIO number usage from
the driver to platforms.
Also add comment to the remaining block describing that it is legacy code
path and we are getting rid of it eventually.
Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 1b8f83503e4b9b7168c5d81cabce5b66e4063607
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Mon Nov 3 23:39:57 2014 +0100
ACPI / GPIO: Document ACPI GPIO mappings API
Document the previously introduced method that can be used by device
drivers to provide the GPIO subsystem with mappings between GPIO names
(connection IDs) and GpioIo()/GpioInt() resources in _CRS.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
commit 49b5f3126e722dd0266d22a2866bb056ede2cf0a
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Mon Oct 27 12:15:14 2014 +0200
net: rfkill: gpio: Add default GPIO driver mappings for ACPI
The driver uses devm_gpiod_get_index(..., index) so that the index refers
directly to the GpioIo resource under the ACPI device. The problem with
this is that if the ordering changes we get wrong GPIOs.
With ACPI 5.1 _DSD we can now use names instead to reference GPIOs
analogous to Device Tree. However, we still have systems out there that do
not provide _DSD at all. These systems must be supported as well.
Luckily we now have acpi_dev_add_driver_gpios() that can be used to provide
mappings for systems where _DSD is not provided and still take advantage of
_DSD if it exists.
This patch changes the driver to create default GPIO mappings if we are
running on ACPI system.
While there we can drop the indices completely and use devm_gpiod_get()
with name instead.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit c9accb22ace8c3318e75fc0bbbca91336dab270d
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Mon Nov 3 23:39:41 2014 +0100
ACPI / GPIO: Driver GPIO mappings for ACPI GPIOs
Provide a way for device drivers using GPIOs described by ACPI
GpioIo resources in _CRS to tell the GPIO subsystem what names
(connection IDs) to associate with specific GPIO pins defined
in there.
To do that, a driver needs to define a mapping table as a
NULL-terminated array of struct acpi_gpio_mapping objects
that each contain a name, a pointer to an array of line data
(struct acpi_gpio_params) objects and the size of that array.
Each struct acpi_gpio_params object consists of three fields,
crs_entry_index, line_index, active_low, representing the index of
the target GpioIo()/GpioInt() resource in _CRS starting from zero,
the index of the target line in that resource starting from zero,
and the active-low flag for that line, respectively.
Next, the mapping table needs to be passed as the second
argument to acpi_dev_add_driver_gpios() that will register it with
the ACPI device object pointed to by its first argument. That
should be done in the driver's .probe() routine.
On removal, the driver should unregister its GPIO mapping table
by calling acpi_dev_remove_driver_gpios() on the ACPI device
object where that table was previously registered.
Included are fixes from Mika Westerberg.
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 872e3713eb734e43d3001a6ef957cb67ba2349a3
Author: Aaron Lu <aaron.lu@intel.com>
Date: Tue Oct 21 13:34:00 2014 +0200
input: gpio_keys_polled: Make use of device property API
Make use of device property API in this driver so that both OF based
system and ACPI based system can use this driver.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit ac8ab45966dc9e98cdb44d0ca833c25772eb4745
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Mon Oct 27 23:30:10 2014 +0100
leds: leds-gpio: Make use of device property API
Make use of device property API in this driver so that both OF and ACPI
based system can use the same driver.
This change contains material from Max Eliaser and Mika Westerberg.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit d48dca7d09f36535c2f6dba340e796b54aa6667d
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue Oct 21 13:33:59 2014 +0200
gpio: Support for unified device properties interface
Some drivers need to deal with only firmware representation of its
GPIOs. An example would be a GPIO button array driver where each button
is described as a separate firmware node in device tree. Typically these
child nodes do not have physical representation in the Linux device
model.
In order to help device drivers to handle such firmware child nodes we
add dev[m]_get_named_gpiod_from_child() that takes a child firmware
node pointer as its second argument (the first one is the parent device
itself), finds the GPIO using whatever is the underlying firmware
method, and requests the GPIO properly.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit fcca136c38aa18deec3ddd3b872ea49e6d082e5a
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Tue Nov 4 14:03:59 2014 +0100
Driver core: Unified interface for firmware node properties
Add new generic routines are provided for retrieving properties from
device description objects in the platform firmware in case there are
no struct device objects for them (either those objects have not been
created yet or they do not exist at all).
The following functions are provided:
fwnode_property_present()
fwnode_property_read_u8()
fwnode_property_read_u16()
fwnode_property_read_u32()
fwnode_property_read_u64()
fwnode_property_read_string()
fwnode_property_read_u8_array()
fwnode_property_read_u16_array()
fwnode_property_read_u32_array()
fwnode_property_read_u64_array()
fwnode_property_read_string_array()
in analogy with the corresponding functions for struct device added
previously. For all of them, the first argument is a pointer to struct
fwnode_handle (new type) that allows a device description object
(depending on what platform firmware interface is in use) to be
obtained.
Add a new macro device_for_each_child_node() for iterating over the
children of the device description object associated with a given
device and a new function device_get_child_node_count() returning the
number of a given device's child nodes.
The interface covers both ACPI and Device Trees.
Suggested-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 4ac0bb216349cce71aea75f6156d44c59fc18086
Author: Aaron Lu <aaron.lu@intel.com>
Date: Tue Oct 21 23:30:25 2014 +0200
input: gpio_keys_polled: Add support for GPIO descriptors
GPIO descriptors are the preferred way over legacy GPIO numbers
nowadays. Convert the driver to use GPIO descriptors internally but
still allow passing legacy GPIO numbers from platform data to support
existing platforms.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 17907d91fb1bd542b9503cc5223a070039b8d031
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Mon Oct 27 23:29:32 2014 +0100
leds: leds-gpio: Add support for GPIO descriptors
GPIO descriptors are the preferred way over legacy GPIO numbers
nowadays. Convert the driver to use GPIO descriptors internally but
still allow passing legacy GPIO numbers from platform data to support
existing platforms.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 2781ab92fd33f2270c7b5e1628db0a180ed3ab03
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue Oct 21 13:33:56 2014 +0200
gpio: sch: Consolidate core and resume banks
This is actually a single device with two sets of identical registers,
which just happen to start from a different offset. Instead of having
separate GPIO chips created we consolidate them to be single GPIO chip.
In addition having a single GPIO chip allows us to handle ACPI GPIO
translation in the core in a more generic way, since the two GPIO chips
share the same parent ACPI device.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 732feab25f90c338e9ef36457a3591f322f53264
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Wed Oct 29 15:41:01 2014 +0100
gpio / ACPI: Add support for _DSD device properties
With release of ACPI 5.1 and _DSD method we can finally name GPIOs (and
other things as well) returned by _CRS. Previously we were only able to
use integer index to find the corresponding GPIO, which is pretty error
prone if the order changes.
With _DSD we can now query GPIOs using name instead of an integer index,
like the below example shows:
// Bluetooth device with reset and shutdown GPIOs
Device (BTH)
{
Name (_HID, ...)
Name (_CRS, ResourceTemplate ()
{
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO0", 0, ResourceConsumer) {15}
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO0", 0, ResourceConsumer) {27, 31}
})
Name (_DSD, Package ()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () {"reset-gpio", Package() {^BTH, 1, 1, 0 }},
Package () {"shutdown-gpio", Package() {^BTH, 0, 0, 0 }},
}
})
}
The format of the supported GPIO property is:
Package () { "name", Package () { ref, index, pin, active_low }}
ref - The device that has _CRS containing GpioIo()/GpioInt() resources,
typically this is the device itself (BTH in our case).
index - Index of the GpioIo()/GpioInt() resource in _CRS starting from zero.
pin - Pin in the GpioIo()/GpioInt() resource. Typically this is zero.
active_low - If 1 the GPIO is marked as active_low.
Since ACPI GpioIo() resource does not have field saying whether it is
active low or high, the "active_low" argument can be used here. Setting
it to 1 marks the GPIO as active low.
In our Bluetooth example the "reset-gpio" refers to the second GpioIo()
resource, second pin in that resource with the GPIO number of 31.
This patch implements necessary support to gpiolib for extracting GPIOs
using _DSD device properties.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 6b23a29f06a006a48d7fb94eef42452552144fb9
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue Oct 21 13:33:56 2014 +0200
misc: at25: Make use of device property API
Make use of device property API in this driver so that both DT and ACPI
based systems can use this driver.
In addition we hard-code the name of the chip to be "at25" for the
reason that there is no common mechanism to fetch name of the firmware
node. The only existing user (arch/arm/boot/dts/phy3250.dts) uses the
same name so it should continue to work.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit c901445ec7d1f37d9fd2250dd4390f395b954ef3
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue Oct 21 13:33:56 2014 +0200
ACPI: Allow drivers to match using Device Tree compatible property
We have lots of existing Device Tree enabled drivers and allocating
separate _HID for each is not feasible. Instead we allocate special _HID
"PRP0001" that means that the match should be done using Device Tree
compatible property using driver's .of_match_table instead if the driver
is missing .acpi_match_table.
If there is a need to distinguish from where the device is enumerated
(DT/ACPI) driver can check dev->of_node or ACPI_COMPATION(dev).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 7eace032b0201dfb110586080dd0628ec48c0d5c
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Tue Nov 4 01:28:56 2014 +0100
Driver core: Unified device properties interface for platform firmware
Add a uniform interface by which device drivers can request device
properties from the platform firmware by providing a property name
and the corresponding data type. The purpose of it is to help to
write portable code that won't depend on any particular platform
firmware interface.
The following general helper functions are added:
device_property_present()
device_property_read_u8()
device_property_read_u16()
device_property_read_u32()
device_property_read_u64()
device_property_read_string()
device_property_read_u8_array()
device_property_read_u16_array()
device_property_read_u32_array()
device_property_read_u64_array()
device_property_read_string_array()
The first one allows the caller to check if the given property is
present. The next 5 of them allow single-valued properties of
various types to be retrieved in a uniform way. The remaining 5 are
for reading properties with multiple values (arrays of either numbers
or strings).
The interface covers both ACPI and Device Trees.
This change set includes material from Mika Westerberg and Aaron Lu.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit c2d6966e876bb42c76d03d3eb207bfa754657d8b
Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue Oct 21 13:33:55 2014 +0200
ACPI: Add support for device specific properties
Device Tree is used in many embedded systems to describe the system
configuration to the OS. It supports attaching properties or name-value
pairs to the devices it describe. With these properties one can pass
additional information to the drivers that would not be available
otherwise.
ACPI is another configuration mechanism (among other things) typically
seen, but not limited to, x86 machines. ACPI allows passing arbitrary
data from methods but there has not been mechanism equivalent to Device
Tree until the introduction of _DSD in the recent publication of the
ACPI 5.1 specification.
In order to facilitate ACPI usage in systems where Device Tree is
typically used, it would be beneficial to standardize a way to retrieve
Device Tree style properties from ACPI devices, which is what we do in
this patch.
If a given device described in ACPI namespace wants to export properties it
must implement _DSD method (Device Specific Data, introduced with ACPI 5.1)
that returns the properties in a package of packages. For example:
Name (_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"name1", <VALUE1>},
Package () {"name2", <VALUE2>},
...
}
})
The UUID reserved for properties is daffd814-6eba-4d8c-8a91-bc9bbf4aa301
and is documented in the ACPI 5.1 companion document called "_DSD
Implementation Guide" [1], [2].
We add several helper functions that can be used to extract these
properties and convert them to different Linux data types.
The ultimate goal is that we only have one device property API that
retrieves the requested properties from Device Tree or from ACPI
transparent to the caller.
[1] http://www.uefi.org/sites/default/files/resources/_DSD-implementation-guide-toplevel.htm
[2] http://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 3f675aef809d3f82bf1aa0700065ddf798d1eb86
Author: Mark Salter <msalter@redhat.com>
Date: Tue Sep 30 17:19:24 2014 -0400
[NOT FOR UPSTREAM] arm64: avoid need for console= to enable serial console
Tell kernel to prefer one of the serial ports on platforms
pl011, 8250, or sbsa uarts. console= on command line will
override these assumed preferences. This is just a hack to
get the behavior we want from SPCR table support. Once SPCR
is supported, we can drop this.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 20d7a3414d18cea0ed8982a5c538e7548bc3bb0a
Author: Tom Lendacky <thomas.lendacky@amd.com>
Date: Tue Sep 9 23:33:17 2014 -0400
drivers: net: AMD Seattle XGBE PHY support for A0 silicon
This patch modifies the upstream AMD XGBE PHY driver to support
A0 Seattle silicon in currently shipping systems. The upstream
Linux driver is targetted for Seattle B0 silicon.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 286f94e27659e7eb45e4b54b4e3c0f9a3b9f9fd4
Author: Tom Lendacky <thomas.lendacky@amd.com>
Date: Tue Sep 9 23:34:07 2014 -0400
drivers: net: AMD Seattle XGBE 10GbE support for A0 silicon
This patch modifies the upstream AMD 10GbE XGBE Ethernet driver to
support A0 Seattle silicon in currently shipping systems. The
upstream Linux driver is targetted for Seattle B0 silicon.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 7e7eade04b5fe90bb30a68aa52f0881b354e7d1d
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Fri Jul 26 17:55:02 2013 +0100
virtio-mmio: add ACPI probing
Added the match table and pointers for ACPI probing to the driver.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
commit a1b37e75322dfbd359c86e51ee624511811c93b6
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Wed Jul 24 11:29:48 2013 +0100
net: smc91x: add ACPI probing support.
Add device ID LINA0003 for this device and add the match table.
As its a platform device it needs no other code and will be probed in by
acpi_platform once device ID is added.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
commit 29fe31c2a0e6ce57695c1341351c2579d159e446
Author: Mark Salter <msalter@redhat.com>
Date: Thu Sep 18 15:05:23 2014 -0400
arm64: add sev to parking protocol
Parking protocol wakes secondary cores with an interrupt.
This patch adds an additional sev() to send an event. This
is a temporary hack for APM Mustang board and not intended
for upstream.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 0875f7e4b6b078859a3765aac54c345980b2748c
Author: Mark Salter <msalter@redhat.com>
Date: Sun Sep 14 09:44:44 2014 -0400
Revert "ahci_xgene: Skip the PHY and clock initialization if already configured by the firmware."
This reverts commit 0bed13bebd6c99d097796d2ca6c4f10fb5b2eabc.
Temporarily revert for backwards compatibility with rh-0.12-1 firmware
commit 31bf2a5577ffb5b318bb9f5d80a9f26224674521
Author: Mark Salter <msalter@redhat.com>
Date: Mon Aug 11 13:46:43 2014 -0400
xgene: add support for ACPI-probed serial port
commit f099d9ceac69d7fda70e5d3ee8200f8585f4ff88
Author: Mark Salter <msalter@redhat.com>
Date: Sat Aug 9 12:01:20 2014 -0400
sata/xgene: support acpi probing
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 7020f9dda064514d58da5701a351d4773a1d274f
Author: Mark Salter <msalter@redhat.com>
Date: Tue Sep 9 22:59:48 2014 -0400
arm64: add parking protocol support
This is a first-cut effort at parking protocol support. It is
very much a work in progress (as is the spec it is based on).
This code deviates from the current spec in a number of ways
to work around current firmware issues and issues with kernels
using 64K page sizes.
caveat utilitor
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 17b60c76da131d5fb9c401ec43404c911fe57f39
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Thu Aug 28 14:26:16 2014 -0400
ARM64 / ACPI: Introduce some PCI functions when PCI is enabled
Introduce some PCI functions to make ACPI can be compiled when
CONFIG_PCI is enabled, these functions should be revisited when
implemented on ARM64.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
[fixed up for 3.17-rc]
Signed-off-by: Mark Salter <msalter@redhat.com>
commit fc47393ae2927cb1069c2e15a7b142998702b05d
Author: Al Stone <ahs3@redhat.com>
Date: Thu Aug 28 13:14:16 2014 -0400
Fix arm64 compilation error in PNP code
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 7100a707311becfd1cbfc26ad8298cc290877db5
Author: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Date: Tue Sep 9 15:37:15 2014 -0500
ata: ahci_platform: Add ACPI support for AMD Seattle SATA controller
This patch adds ACPI support for non-PCI SATA contoller in ahci_platform driver.
It adds ACPI matching table in ahci_platform to support AMD Seattle SATA controller
with following ASL structure in DSDT:
Device (SATA0)
{
Name(_HID, "AMDI0600") // Seattle AHSATA
Name (_CCA, 1) // Cache-coherent controller
Name (_CRS, ResourceTemplate ()
{
Memory32Fixed (ReadWrite, 0xE0300000, 0x00010000)
Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,,,) { 387 }
})
}
Since ATA driver should not require PCI support for ATA_ACPI,
this patch also removes dependency in the driver/ata/Kconfig.
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
commit 397bc93ab853400f7146b8be14bd6cc044df9830
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Wed Aug 13 13:47:18 2014 +0100
tty: SBSA compatible UART
This is a subset of pl011 UART which does not supprt DMA or baud rate
changing. It does, however, provide earlycon support (i.e., using
"earlycon=ttySBSA" on the kernel command line).
It is specified in the Server Base System Architecture document from
ARM.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
commit 1e6ba230a5e0c03916b0134d846204e64c477972
Author: Mark Salter <msalter@redhat.com>
Date: Mon Sep 8 11:58:46 2014 -0400
acpi: fix acpi_os_ioremap for arm64
The acpi_os_ioremap() function may be used to map normal RAM or IO
regions. The current implementation simply uses ioremap_cache(). This
will work for some architectures, but arm64 ioremap_cache() cannot be
used to map IO regions which don't support caching. So for arm64, use
ioremap() for non-RAM regions.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit b3ae15f9e484bab186a5ed697bb25f0244b5aa50
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Mon Sep 8 10:36:44 2014 -0400
acpi: add arm to the platforms that use ioremap
Now with the base changes to the arm memory mapping it is safe
to convert to using ioremap to map in the tables.
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
commit 4b29bf89ba430787509cb06a6aa38fafeb910b56
Author: Mark Salter <msalter@redhat.com>
Date: Mon Sep 8 17:04:28 2014 -0400
acpi/arm64: NOT FOR UPSTREAM - remove EXPERT dependency
For convenience to keep existing configs working, remove
CONFIG_EXPERT dependency from ACPI for ARM64. This shouldn't
go upstream just yet.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 58bb9299b1b2a87bd8002ee1bd6eb90138cc4f30
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Fri Oct 17 21:37:14 2014 +0800
Documentation: ACPI for ARM64
Add documentation for the guidelines of how to use ACPI
on ARM64.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 47e5e8a11d7d0f4930c2e98671a973f3edac313f
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Fri Oct 17 21:37:13 2014 +0800
ARM64 / ACPI: Enable ARM64 in Kconfig
Add Kconfigs to build ACPI on ARM64, and make ACPI available on ARM64.
acpi_idle driver is x86/IA64 dependent now, so make CONFIG_ACPI_PROCESSOR
depend on X86 || IA64, and implement it on ARM64 in the future.
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 3738397b4a8e91102db2af9ad29919a19425b3f0
Author: Al Stone <al.stone@linaro.org>
Date: Fri Oct 17 21:37:12 2014 +0800
ARM64 / ACPI: Select ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64
ACPI reduced hardware mode is disabled by default, but ARM64
can only run properly in ACPI hardware reduced mode, so select
ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64.
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 77476629347ec5b72b13e0f3d2cf71604286298c
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:11 2014 +0800
ARM64 / ACPI: Parse GTDT to initialize arch timer
Using the information presented by GTDT to initialize the arch
timer (not memory-mapped).
Originally-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 1386d5f6353e7a13d34df5302bc7e4bd1c6aae28
Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Date: Fri Oct 17 21:37:10 2014 +0800
ARM64 / ACPI: Add GICv2 specific ACPI boot support
ACPI kernel uses MADT table for proper GIC initialization. It needs to
parse GIC related subtables, collect CPU interface and distributor
addresses and call driver initialization function (which is hardware
abstraction agnostic). In a similar way, FDT initialize GICv1/2.
NOTE: This commit allow to initialize GICv1/2 basic functionality.
GICv2 vitalization extension, GICv3/4 and ITS are considered as next
steps.
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 5213320ccc37374bbf6facc7f7e3c9246bc933c3
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:09 2014 +0800
ARM64 / ACPI: Introduce ACPI_IRQ_MODEL_GIC and register device's gsi
Introduce ACPI_IRQ_MODEL_GIC which is needed for ARM64 as GIC is
used, and then register device's gsi with the core IRQ subsystem.
acpi_register_gsi() is similar to DT based irq_of_parse_and_map(),
since gsi is unique in the system, so use hwirq number directly
for the mapping.
Originally-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit d1c5a9cdd33f04d4ca5f8ef1b8aed16552fc4f2d
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:08 2014 +0800
ACPI / processor: Make it possible to get CPU hardware ID via GICC
Introduce a new function map_gicc_mpidr() to allow MPIDRs to be obtained
from the GICC Structure introduced by ACPI 5.1.
MPIDR is the CPU hardware ID as local APIC ID on x86 platform, so we use
MPIDR not the GIC CPU interface ID to identify CPUs.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 9db9a0235e80b8a80af1a000fac4127333b2a2e6
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:07 2014 +0800
ARM64 / ACPI: Parse MADT for SMP initialization
MADT contains the information for MPIDR which is essential for
SMP initialization, parse the GIC cpu interface structures to
get the MPIDR value and map it to cpu_logical_map(), and add
enabled cpu with valid MPIDR into cpu_possible_map.
ACPI 5.1 only has two explicit methods to boot up SMP, PSCI and
Parking protocol, but the Parking protocol is only specified for
ARMv7 now, so make PSCI as the only way for the SMP boot protocol
before some updates for the ACPI spec or the Parking protocol spec.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
commit 1a5a392de06147924052458a6c2fd182dcd4d509
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:06 2014 +0800
ACPI / table: Print GIC information when MADT is parsed
When MADT is parsed, print GIC information to make the boot
log look pretty:
ACPI: GICC (acpi_id[0x0000] address[00000000e112f000] MPDIR[0x0] enabled)
ACPI: GICC (acpi_id[0x0001] address[00000000e112f000] MPDIR[0x1] enabled)
...
ACPI: GICC (acpi_id[0x0201] address[00000000e112f000] MPDIR[0x201] enabled)
These information will be very helpful to bring up early systems to
see if acpi_id and MPIDR are matched or not as spec defined.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
commit dbb10ccb37b11731a79bc004da46e482a7152be4
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:05 2014 +0800
ARM64 / ACPI: Parse FADT table to get PSCI flags for PSCI init
There are two flags: PSCI_COMPLIANT and PSCI_USE_HVC. When set,
the former signals to the OS that the firmware is PSCI compliant.
The latter selects the appropriate conduit for PSCI calls by
toggling between Hypervisor Calls (HVC) and Secure Monitor Calls
(SMC).
FADT table contains such information, parse FADT to get the flags
for PSCI init. Since ACPI 5.1 doesn't support self defined PSCI
function IDs, which means that only PSCI 0.2+ is supported in ACPI.
At the same time, only ACPI 5.1 or higher verison supports PSCI,
and FADT Major.Minor version was introduced in ACPI 5.1, so we
will check the version and only parse FADT table with version >= 5.1.
If firmware provides ACPI tables with ACPI version less than 5.1,
OS will be messed up with those information and have no way to init
smp and GIC, so disable ACPI if we get an FADT table with version
less that 5.1.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
commit f367d6c84f50ad7e1944ef6ec7aca8b01fd82051
Author: Hanjun Guo <hanjun.guo@linaro.org>
Date: Fri Oct 17 21:37:04 2014 +0800
ARM64 / ACPI: Make PCI optional for ACPI on ARM64
As PCI for ARM64 is not ready, so introduce some stub functions
to make PCI optional for ACPI, and make ACPI core run without
CONFIG_PCI on ARM64.
Since ACPI on X86 and IA64 depends on PCI and this patch only makes
PCI optional for ARM64, it will not break anything on X86 and IA64.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 2926fd3502c857db06ab41caa8f628089287d6f4
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Fri Oct 17 21:37:03 2014 +0800
ARM64 / ACPI: If we chose to boot from acpi then disable FDT
If the early boot methods of acpi are happy that we have valid ACPI
tables and acpi=force has been passed, then do not unflat devicetree
effectively disabling further hardware probing from DT.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit d40d81475b41044935ee4eb455a58308e0f070ac
Author: Al Stone <al.stone@linaro.org>
Date: Fri Oct 17 21:37:02 2014 +0800
ARM64 / ACPI: Introduce early_param for "acpi" and pass acpi=force to enable ACPI
Introduce one early parameters "off" and "force" for "acpi", acpi=off
will be the default behavior for ARM64, so introduce acpi=force to
enable ACPI on ARM64.
Disable ACPI before early parameters parsed, and enable it to pass
"acpi=force" if people want use ACPI on ARM64. This ensures DT be
the prefer one if ACPI table and DT both are provided at this moment.
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 19ddd869d20be9d05e37a3e867f3c1c379bc0a07
Author: Graeme Gregory <graeme.gregory@linaro.org>
Date: Fri Oct 17 21:37:01 2014 +0800
ARM64 / ACPI: Introduce sleep-arm.c
ACPI 5.1 does not currently support S states for ARM64 hardware but
ACPI code will call acpi_target_system_state() for device power
managment, so introduce sleep-arm.c to allow other drivers to function
until S states are defined.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit b2247b541995418caafcfc9f12e57b444fdee75d
Author: Al Stone <al.stone@linaro.org>
Date: Fri Oct 17 21:37:00 2014 +0800
ARM64 / ACPI: Get RSDP and ACPI boot-time tables
As we want to get ACPI tables to parse and then use the information
for system initialization, we should get the RSDP (Root System
Description Pointer) first, it then locates Extended Root Description
Table (XSDT) which contains all the 64-bit physical address that
pointer to other boot-time tables.
Introduce acpi.c and its related head file in this patch to provide
fundamental needs of extern variables and functions for ACPI core,
and then get boot-time tables as needed.
- asm/acenv.h for arch specific ACPICA environments and
implementation, It is needed unconditionally by ACPI core;
- asm/acpi.h for arch specific variables and functions needed by
ACPI driver core;
- acpi.c for ARM64 related ACPI implementation for ACPI driver
core;
acpi_boot_table_init() is introduced to get RSDP and boot-time tables,
it will be called in setup_arch() before paging_init(), so we should
use eary_memremap() mechanism here to get the RSDP and all the table
pointers.
Signed-off-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit ff7fee61b5c51bc24b358a6521ee9ac0c81c4ae6
Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Date: Fri Oct 17 21:36:59 2014 +0800
ACPI / table: Count matched and successfully parsed entries without specifying max entries
It is very useful to traverse all available table entries without max
number of expected entries type. Current acpi_parse_entries()
implementation gives that feature but it does not count those entries,
it returns 0 instead, so fix it to count matched and successfully
entries and return it.
NOTE: This change has no impact to x86 and ia64 archs since existing code
checks for error occurrence only (acpi_parse_entries(...,0) < 0).
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 77a4d1f4423591c4f0bed7d580afb7fc7cacb082
Author: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Date: Fri Oct 17 21:36:58 2014 +0800
ACPI / table: Add new function to get table entries
The acpi_table_parse() function has a callback that
passes a pointer to a table_header. Add a new function
which takes this pointer and parses its entries. This
eliminates the need to re-traverse all the tables for
each call. e.g. as in acpi_table_parse_madt() which is
normally called after acpi_table_parse().
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
commit 17a565aba814f8cb39d27afb0dbf3834be83ac41
Author: Mark Salter <msalter@redhat.com>
Date: Sat Nov 8 22:25:48 2014 -0500
arm64: use UEFI for reboot
Wire in support for UEFI reboot. We want UEFI reboot to have
highest priority for capsule support.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit c66bae4dfb9dbf577e4692fd034cb80703f687a6
Author: Mark Salter <msalter@redhat.com>
Date: Sat Nov 8 15:25:41 2014 -0500
arm64: use UEFI as last resort for poweroff
Wire in support for poweroff via UEFI.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit ddc5d1b9a52d9c17fd975fd6ee22be7d6ce5e496
Author: Mark Salter <msalter@redhat.com>
Date: Thu Jul 17 13:34:50 2014 -0400
ahci_xgene: add errata workaround for ATA_CMD_SMART
commit 2a0bdff6b958d1b2:
ahci_xgene: fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command.
added a workaround for X-Gene AHCI controller errata. This was done
for all ATA_CMD_ID_ATA commands. The errata also appears to affect
ATA_CMD_SMART commands as well. This was discovered when running
smartd or just smartctl -x. This patch adds a dma engine restart for
ATA_CMD_SMART commands which clears up the issues seen with smartd.
Signed-off-by: Mark Salter <msalter@redhat.com>
commit 8675c7685ea64e0fda9cebbed08e3f30a71589cf
Author: Kyle McMartin <kmcmarti@redhat.com>
Date: Tue May 13 22:25:26 2014 -0400
arm64: don't set READ_IMPLIES_EXEC for EM_AARCH64 ELF objects
Message-id: <20140513222526.GC26038@redacted.bos.redhat.com>
Patchwork-id: 79789
O-Subject: [ACADIA PATCH] arm64: don't set READ_IMPLIES_EXEC for EM_AARCH64 ELF objects
Bugzilla: 1085528
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1085528
Upstream: submitted soon
[Sadly this isn't (yet) sufficient... but it fixes at least one issue
here... cat /proc/$$/personality shows READ_IMPLIES_EXEC before. I'll
try to figure the rest out tomorrow.]
Currently, we're accidentally ending up with executable stacks on
AArch64 when the ABI says we shouldn't be, and relying on glibc to fix
things up for us when we're loaded. However, SELinux will deny us
mucking with the stack, and hit us with execmem AVCs.
The reason this is happening is somewhat complex:
fs/binfmt_elf.c:load_elf_binary()
- initializes executable_stack = EXSTACK_DEFAULT implying the
architecture should make up its mind.
- does a pile of loading goo
- runs through the program headers, looking for PT_GNU_STACK
and setting (or unsetting) executable_stack if it finds it.
This is our first problem, we won't generate these unless an
executable stack is explicitly requested.
- more ELF loading goo
- sets whether we're a compat task or not (TIF_32BIT) based on compat.h
- for compat reasons (pre-GNU_STACK) checks if the READ_IMPLIES_EXEC
flag should be set for ancient toolchains
Here's our second problem, we test if read_implies_exec based on
stk != EXSTACK_DISABLE_X, which is true since stk == EXSTACK_DEFAULT.
So we set current->personality |= READ_IMPLIES_EXEC like a broken
legacy toolchain would want.
- Now we call setup_arg_pages to set up the stack...
fs/exec.c:setup_arg_pages()
- lots of magic happens here
- vm_flags gets initialized to VM_STACK_FLAGS
Here's our third problem, VM_STACK_FLAGS on arm64 is
VM_DEFAULT_DATA_FLAG which tests READ_IMPLIES_EXEC and sets VM_EXEC
if it's true. So we end up with an executable stack mapping, since we
don't have executable_stack set (it's still EXSTACK_DEFAULT at this
point) to unset it anywhere.
Bang. execstack AVC when the program starts running.
The easiest way I can see to fix this is to test if we're a legacy task
and fix it up there. But that's not as simple as it sounds, because
the 32-bit ABI depends on what revision of the CPU we've enabled (not
that it matters since we're ARMv8...) Regardless, in the compat case,
set READ_IMPLIES_EXEC if we've found a GNU_STACK header which explicitly
requested it as in arch/arm/kernel/elf.c:arm_elf_read_implies_exec().
Signed-off-by: Kyle McMartin <kmcmarti@redhat.com>
Signed-off-by: Donald Dutile <ddutile@redhat.com>
commit ff46d52dc804aeff783ff55b4b6dc489da20bc11
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Fri Nov 7 14:12:34 2014 +0000
arm64: kvm: eliminate literal pool entries
Replace two instances of 'ldr xN, =(constant)' in the world switch
hot path with 'mov' instructions.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit 6ddb6f9d2fe1ecab0b812b3adc4ba4bc0cf19ad8
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Fri Nov 7 14:12:33 2014 +0000
arm64: ftrace: eliminate literal pool entries
Replace ldr xN, =<symbol> with adrp/add or adrp/ldr [as appropriate]
in the implementation of _mcount(), which may be called very often.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit 35939bd2c847d742ab82049b2cc79c086e0e7130
Author: Mark Rutland <mark.rutland@arm.com>
Date: Tue Nov 4 10:50:16 2014 +0000
arm64: log physical ID of boot CPU
In certain debugging scenarios it's useful to know the physical ID (i.e.
the MPIDR_EL1.Aff* fields) of the boot CPU, but we don't currently log
this as we do for 32-bit ARM kernels.
This patch makes the kernel log the physical ID of the boot CPU early in
the boot process. The CPU logical map initialisation is folded in to
smp_setup_processor_id (which contrary to its name is also called by UP
kernels). This is called before setup_arch, so should not adversely
affect existing cpu_logical_map users.
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Lorenzo Pieralisis <lorenzo.pieralisi@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit aea6f516118cedb6f9e8d2ab23ab5a09c275e68d
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Mon Nov 3 16:50:01 2014 +0000
arm64/crypto: use crypto instructions to generate AES key schedule
This patch implements the AES key schedule generation using ARMv8
Crypto Instructions. It replaces the table based C implementation
in aes_generic.ko, which means we can drop the dependency on that
module.
Tested-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit 0844cddfa0ad22093ef94fdf203fe50cb92222db
Author: Geoff Levand <geoff@infradead.org>
Date: Fri Oct 31 23:06:47 2014 +0000
arm64/kvm: Fix assembler compatibility of macros
Some of the macros defined in kvm_arm.h are useful in assembly files, but are
not compatible with the assembler. Change any C language integer constant
definitions using appended U, UL, or ULL to the UL() preprocessor macro. Also,
add a preprocessor include of the asm/memory.h file which defines the UL()
macro.
Fixes build errors like these when using kvm_arm.h in assembly
source files:
Error: unexpected characters following instruction at operand 3 -- `and x0,x1,#((1U<<25)-1)'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit 94141ed36a5e0a2159deadfcc29a504b55bb352d
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue Oct 28 12:24:20 2014 +0000
arm64/dt: add machine name to kernel call stack dump output
This installs the machine name as recorded by setup_machine_fdt()
as dump stack arch description. This results in the string to be
included in call stack dumps, as is shown here:
...
Bad mode in Synchronous Abort handler detected, code 0x84000005
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc2+ #548
> Hardware name: linux,dummy-virt (DT)
task: ffffffc07c870000 ti: ffffffc07c878000 task.ti: ffffffc07c878000
PC is at 0x0
...
Note that systems that support DMI/SMBIOS may override this later.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit a3b3b6027369ce53251bb381c9b87031bbd75464
Author: Steve Capper <steve.capper@linaro.org>
Date: Fri Oct 24 13:22:20 2014 +0100
arm64: xchg: Implement cmpxchg_double
The arm64 architecture has the ability to exclusively load and store
a pair of registers from an address (ldxp/stxp). Also the SLUB can take
advantage of a cmpxchg_double implementation to avoid taking some
locks.
This patch provides an implementation of cmpxchg_double for 64-bit
pairs, and activates the logic required for the SLUB to use these
functions (HAVE_ALIGNED_STRUCT_PAGE and HAVE_CMPXCHG_DOUBLE).
Also definitions of this_cpu_cmpxchg_8 and this_cpu_cmpxchg_double_8
are wired up to cmpxchg_local and cmpxchg_double_local (rather than the
stock implementations that perform non-atomic operations with
interrupts disabled) as they are used by the SLUB.
On a Juno platform running on only the A57s I get quite a noticeable
performance improvement with 5 runs of hackbench on v3.17:
Baseline | With Patch
-----------------+-----------
Mean 119.2312 | 106.1782
StdDev 0.4919 | 0.4494
(times taken to complete `./hackbench 100 process 1000', in seconds)
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit e21d5b44cf03b31feac7854a5953d17ef94d76d9
Author: Joonwoo Park <joonwoop@codeaurora.org>
Date: Tue Oct 21 01:59:03 2014 +0100
arm64: optimize memcpy_{from,to}io() and memset_io()
Optimize memcpy_{from,to}io() and memset_io() by transferring in 64 bit
as much as possible with minimized barrier usage. This simplest
optimization brings faster throughput compare to current byte-by-byte read
and write with barrier in the loop. Code's skeleton is taken from the
powerpc.
Link: http://lkml.kernel.org/p/20141020133304.GH23751@e104818-lin.cambridge.arm.com
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Trilok Soni <tsoni@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit c8f2e7e08d50c4adb77a0fac4a2871c100ef2f51
Author: Min-Hua Chen <orca.chen@gmail.com>
Date: Thu Oct 9 16:53:10 2014 +0100
arm64: fix data type for physical address
Use phys_addr_t for physical address in alloc_init_pud. Although
phys_addr_t and unsigned long are 64 bit in arm64, it is better
to use phys_addr_t to describe physical addresses.
Signed-off-by: Min-Hua Chen <orca.chen@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
commit 674f32f5ef38c93af7a273a725a0a89b4b8a38a1
Author: Mark Rutland <mark.rutland@arm.com>
Date: Thu Oct 23 16:33:33 2014 +0100
efi: efi-stub: notify on DTB absence
In the absence of a DTB configuration table, the EFI stub will happily
continue attempting to boot a kernel, despite the fact that this kernel
may not function without a description of the hardware. In this case, as
with a typo'd "dtb=" option (e.g. "dbt=") or many other possible
failures, the only output seen by the user will be the rather terse
output from the EFI stub:
EFI stub: Booting Linux Kernel...
To aid those attempting to debug such failures, this patch adds a notice
when no DTB is found, making the output more helpful:
EFI stub: Booting Linux Kernel...
EFI stub: Generating empty DTB
Additionally, a positive acknowledgement is added when a user-specified
DTB is in use:
EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from command line
Similarly, a positive acknowledgement is added when a DTB from a
configuration table is in use:
EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from configuration table
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Roy Franz <roy.franz@linaro.org>
Acked-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit 872cf856a3fc4cff5190af2f79cfc3ac410eae17
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Wed Oct 15 09:36:50 2014 +0200
arm64: dmi: set DMI string as dump stack arch description
This sets the DMI string, containing system type, serial number,
firmware version etc. as dump stack arch description, so that oopses
and other kernel stack dumps automatically have this information
included, if available.
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit 2a2978d3748379bb9a0889c866b210f288c45160
Author: Yi Li <yi.li@linaro.org>
Date: Sat Oct 4 23:46:43 2014 +0800
arm64: dmi: Add SMBIOS/DMI support
SMBIOS is important for server hardware vendors. It implements a spec for
providing descriptive information about the platform. Things like serial
numbers, physical layout of the ports, build configuration data, and the like.
Signed-off-by: Yi Li <yi.li@linaro.org>
Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit c0f06f02f228ca722a2b850363c342f63e6214a6
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue Oct 14 16:41:27 2014 +0200
dmi: add support for SMBIOS 3.0 64-bit entry point
The DMTF SMBIOS reference spec v3.0.0 defines a new 64-bit entry point,
which enables support for SMBIOS structure tables residing at a physical
offset over 4 GB. This is especially important for upcoming arm64
platforms whose system RAM resides entirely above the 4 GB boundary.
For the UEFI case, this code attempts to detect the new SMBIOS 3.0
header magic at the offset passed in the SMBIOS3_TABLE_GUID UEFI
configuration table. If this configuration table is not provided, or
if we fail to parse the header, we fall back to using the legacy
SMBIOS_TABLE_GUID configuration table. This is in line with the spec,
that allows both configuration tables to be provided, but mandates that
they must point to the same structure table, unless the version pointed
to by the 64-bit entry point is a superset of the 32-bit one.
For the non-UEFI case, the detection logic is modified to look for the
SMBIOS 3.0 header magic before it looks for the legacy header magic.
Note that this patch is based on version 3.0.0d [draft] of the
specification, which is expected not to deviate from the final version
in ways that would affect the correctness of this implementation.
Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tony Luck <tony.luck@intel.com>
Acked-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit 4ebf40f890ebad9458abc56e00d4814bc881fb9d
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue Oct 14 16:34:47 2014 +0200
efi: dmi: add support for SMBIOS 3.0 UEFI configuration table
This adds support to the UEFI side for detecting the presence of
a SMBIOS 3.0 64-bit entry point. This allows the actual SMBIOS
structure table to reside at a physical offset over 4 GB, which
cannot be supported by the legacy SMBIOS 32-bit entry point.
Since the firmware can legally provide both entry points, store
the SMBIOS 3.0 entry point in a separate variable, and let the
DMI decoding layer decide which one will be used.
Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit 90c66a6923311d477c68543f945f543558b91eec
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Fri Oct 17 12:44:11 2014 +0200
arm64/efi: drop redundant set_bit(EFI_CONFIG_TABLES)
The EFI_CONFIG_TABLES bit already gets set by efi_config_init(),
so there is no reason to set it again after this function returns
successfully.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit bbc705f61c1aebddb5bf80f75964b6da40c55ca9
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Mon Oct 20 15:31:57 2014 +0200
arm64/efi: invert UEFI memory region reservation logic
Instead of reserving the memory regions based on which types we know
need to be reserved, consider only regions of the following types as
free for general use by the OS:
EFI_LOADER_CODE
EFI_LOADER_DATA
EFI_BOOT_SERVICES_CODE
EFI_BOOT_SERVICES_DATA
EFI_CONVENTIONAL_MEMORY
Note that this also fixes a problem with the original code, which would
misidentify a EFI_RUNTIME_SERVICES_DATA region as not reserved if it
does not have the EFI_MEMORY_RUNTIME attribute set. However, it is
perfectly legal for the firmware not to request a virtual mapping for
EFI_RUNTIME_SERVICES_DATA regions that contain configuration tables, in
which case the EFI_MEMORY_RUNTIME attribute would not be set.
Acked-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit d6e4e04244cb7b4670759bd83679ead21df55a8a
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Fri Oct 10 18:42:55 2014 +0200
arm64/efi: set PE/COFF file alignment to 512 bytes
Change our PE/COFF header to use the minimum file alignment of
512 bytes (0x200), as mandated by the PE/COFF spec v8.3
Also update the linker script so that the Image file itself is also a
round multiple of FileAlignment.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit e9e7422d7035c64a16771d47dcd9f907adc5070d
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Fri Oct 10 11:25:24 2014 +0200
arm64/efi: set PE/COFF section alignment to 4 KB
Position independent AArch64 code needs to be linked and loaded at the
same relative offset from a 4 KB boundary, or adrp/add and adrp/ldr
pairs will not work correctly. (This is how PC relative symbol
references with a 4 GB reach are emitted)
We need to declare this in the PE/COFF header, otherwise the PE/COFF
loader may load the Image and invoke the stub at an offset which
violates this rule.
Reviewed-by: Roy Franz <roy.franz@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit 2d2346a11e6ac9be30ac5590a7ec4b47bda35870
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Wed Oct 8 16:11:27 2014 +0200
arm64/efi: efistub: jump to 'stext' directly, not through the header
After the EFI stub has done its business, it jumps into the kernel by
branching to offset #0 of the loaded Image, which is where it expects
to find the header containing a 'branch to stext' instruction.
However, the UEFI spec 2.1.1 states the following regarding PE/COFF
image loading:
"A UEFI image is loaded into memory through the LoadImage() Boot
Service. This service loads an image with a PE32+ format into memory.
This PE32+ loader is required to load all sections of the PE32+ image
into memory."
In other words, it is /not/ required to load parts of the image that are
not covered by a PE/COFF section, so it may not have loaded the header
at the expected offset, as it is not covered by any PE/COFF section.
So instead, jump to 'stext' directly, which is at the base of the
PE/COFF .text section, by supplying a symbol 'stext_offset' to
efi-entry.o which contains the relative offset of stext into the Image.
Also replace other open coded calculations of the same value with a
reference to 'stext_offset'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Documentation/acpi/gpio-properties.txt | 96 +++
Documentation/arm64/arm-acpi.txt | 323 ++++++++++
Documentation/gpio/consumer.txt | 18 +
Documentation/kernel-parameters.txt | 3 +-
arch/arm/mach-s3c24xx/h1940-bluetooth.c | 4 +-
arch/arm/mach-s3c24xx/h1940.h | 4 +-
arch/arm/mach-s3c24xx/mach-h1940.c | 3 +-
arch/arm/mach-s3c24xx/mach-rx1950.c | 3 +-
arch/arm/plat-orion/gpio.c | 3 +-
arch/arm/plat-orion/include/plat/orion-gpio.h | 5 +-
arch/arm64/Kconfig | 22 +
arch/arm64/Makefile | 1 +
arch/arm64/crypto/Kconfig | 5 +-
arch/arm64/crypto/aes-ce-ccm-glue.c | 4 +-
arch/arm64/crypto/aes-ce-cipher.c | 112 +++-
arch/arm64/crypto/aes-ce-setkey.h | 5 +
arch/arm64/crypto/aes-glue.c | 18 +-
arch/arm64/include/asm/acenv.h | 18 +
arch/arm64/include/asm/acpi.h | 102 +++
arch/arm64/include/asm/cmpxchg.h | 71 +++
arch/arm64/include/asm/cpu_ops.h | 1 +
arch/arm64/include/asm/dmi.h | 31 +
arch/arm64/include/asm/elf.h | 3 +-
arch/arm64/include/asm/kvm_arm.h | 21 +-
arch/arm64/include/asm/pci.h | 51 ++
arch/arm64/include/asm/psci.h | 3 +-
arch/arm64/include/asm/smp.h | 10 +-
arch/arm64/kernel/Makefile | 4 +-
arch/arm64/kernel/acpi.c | 398 ++++++++++++
arch/arm64/kernel/cpu_ops.c | 8 +-
arch/arm64/kernel/efi-entry.S | 3 +-
arch/arm64/kernel/efi.c | 74 ++-
arch/arm64/kernel/entry-ftrace.S | 21 +-
arch/arm64/kernel/head.S | 24 +-
arch/arm64/kernel/io.c | 66 +-
arch/arm64/kernel/pci.c | 97 ++-
arch/arm64/kernel/psci.c | 78 ++-
arch/arm64/kernel/setup.c | 67 +-
arch/arm64/kernel/smp.c | 2 +-
arch/arm64/kernel/smp_parking_protocol.c | 110 ++++
arch/arm64/kernel/time.c | 7 +
arch/arm64/kernel/vmlinux.lds.S | 17 +
arch/arm64/kvm/hyp.S | 4 +-
arch/arm64/mm/dma-mapping.c | 103 +++
arch/arm64/pci/Makefile | 2 +
arch/arm64/pci/mmconfig.c | 292 +++++++++
arch/arm64/pci/pci.c | 461 ++++++++++++++
drivers/acpi/Kconfig | 6 +-
drivers/acpi/Makefile | 7 +-
drivers/acpi/bus.c | 3 +
drivers/acpi/internal.h | 11 +
drivers/acpi/osl.c | 6 +-
drivers/acpi/processor_core.c | 37 ++
drivers/acpi/property.c | 551 ++++++++++++++++
drivers/acpi/scan.c | 129 +++-
drivers/acpi/sleep-arm.c | 28 +
drivers/acpi/tables.c | 115 +++-
drivers/acpi/utils.c | 26 +
drivers/ata/Kconfig | 2 +-
drivers/ata/ahci_platform.c | 13 +
drivers/ata/ahci_xgene.c | 30 +-
drivers/base/Makefile | 2 +-
drivers/base/property.c | 431 +++++++++++++
drivers/clocksource/arm_arch_timer.c | 120 +++-
drivers/firmware/dmi_scan.c | 79 ++-
drivers/firmware/efi/efi.c | 4 +
drivers/firmware/efi/libstub/arm-stub.c | 11 +-
drivers/gpio/devres.c | 32 +
drivers/gpio/gpio-sch.c | 293 ++++-----
drivers/gpio/gpiolib-acpi.c | 117 +++-
drivers/gpio/gpiolib.c | 85 ++-
drivers/gpio/gpiolib.h | 7 +-
drivers/input/keyboard/gpio_keys_polled.c | 112 ++--
drivers/iommu/arm-smmu.c | 8 +-
drivers/irqchip/irq-gic-v3.c | 10 +
drivers/irqchip/irq-gic.c | 116 ++++
drivers/irqchip/irqchip.c | 3 +
drivers/leds/leds-gpio.c | 140 ++--
drivers/misc/eeprom/at25.c | 34 +-
drivers/net/ethernet/amd/Kconfig | 2 +-
drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 16 +-
drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 3 +
drivers/net/ethernet/amd/xgbe/xgbe-main.c | 289 +++++++--
drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 20 +-
drivers/net/ethernet/amd/xgbe/xgbe-ptp.c | 4 +-
drivers/net/ethernet/amd/xgbe/xgbe.h | 13 +
drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 78 ++-
drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 68 +-
drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 +
drivers/net/ethernet/smsc/smc91x.c | 10 +
drivers/net/phy/Kconfig | 2 +-
drivers/net/phy/amd-xgbe-phy.c | 777 ++++++++++++-----------
drivers/of/base.c | 33 +
drivers/pci/host/pci-xgene.c | 174 ++++-
drivers/pnp/resource.c | 2 +
drivers/tty/Kconfig | 6 +
drivers/tty/Makefile | 1 +
drivers/tty/sbsauart.c | 355 +++++++++++
drivers/tty/serial/8250/8250_dw.c | 9 +
drivers/virtio/virtio_mmio.c | 12 +-
drivers/xen/efi.c | 1 +
include/acpi/acpi_bus.h | 30 +
include/acpi/acpi_io.h | 6 +
include/asm-generic/vmlinux.lds.h | 7 +
include/kvm/arm_vgic.h | 20 +-
include/linux/acpi.h | 141 +++-
include/linux/clocksource.h | 6 +
include/linux/efi.h | 6 +-
include/linux/gpio/consumer.h | 7 +
include/linux/gpio_keys.h | 3 +
include/linux/irqchip/arm-gic-acpi.h | 31 +
include/linux/irqchip/arm-gic.h | 2 +
include/linux/leds.h | 3 +-
include/linux/of.h | 34 +
include/linux/pci.h | 37 +-
include/linux/property.h | 143 +++++
net/rfkill/rfkill-gpio.c | 18 +-
virt/kvm/arm/arch_timer.c | 108 ++--
virt/kvm/arm/vgic-v2.c | 75 ++-
virt/kvm/arm/vgic-v3.c | 8 +-
virt/kvm/arm/vgic.c | 32 +-
121 files changed, 6824 insertions(+), 1115 deletions(-)
diff --git a/Documentation/acpi/gpio-properties.txt b/Documentation/acpi/gpio-properties.txt
new file mode 100644
index 0000000..ae36fcf
--- /dev/null
+++ b/Documentation/acpi/gpio-properties.txt
@@ -0,0 +1,96 @@
+_DSD Device Properties Related to GPIO
+--------------------------------------
+
+With the release of ACPI 5.1 and the _DSD configuration objecte names
+can finally be given to GPIOs (and other things as well) returned by
+_CRS. Previously, we were only able to use an integer index to find
+the corresponding GPIO, which is pretty error prone (it depends on
+the _CRS output ordering, for example).
+
+With _DSD we can now query GPIOs using a name instead of an integer
+index, like the ASL example below shows:
+
+ // Bluetooth device with reset and shutdown GPIOs
+ Device (BTH)
+ {
+ Name (_HID, ...)
+
+ Name (_CRS, ResourceTemplate ()
+ {
+ GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
+ "\\_SB.GPO0", 0, ResourceConsumer) {15}
+ GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
+ "\\_SB.GPO0", 0, ResourceConsumer) {27, 31}
+ })
+
+ Name (_DSD, Package ()
+ {
+ ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+ Package ()
+ {
+ Package () {"reset-gpio", Package() {^BTH, 1, 1, 0 }},
+ Package () {"shutdown-gpio", Package() {^BTH, 0, 0, 0 }},
+ }
+ })
+ }
+
+The format of the supported GPIO property is:
+
+ Package () { "name", Package () { ref, index, pin, active_low }}
+
+ ref - The device that has _CRS containing GpioIo()/GpioInt() resources,
+ typically this is the device itself (BTH in our case).
+ index - Index of the GpioIo()/GpioInt() resource in _CRS starting from zero.
+ pin - Pin in the GpioIo()/GpioInt() resource. Typically this is zero.
+ active_low - If 1 the GPIO is marked as active_low.
+
+Since ACPI GpioIo() resource does not have a field saying whether it is
+active low or high, the "active_low" argument can be used here. Setting
+it to 1 marks the GPIO as active low.
+
+In our Bluetooth example the "reset-gpio" refers to the second GpioIo()
+resource, second pin in that resource with the GPIO number of 31.
+
+ACPI GPIO Mappings Provided by Drivers
+--------------------------------------
+
+There are systems in which the ACPI tables do not contain _DSD but provide _CRS
+with GpioIo()/GpioInt() resources and device drivers still need to work with
+them.
+
+In those cases ACPI device identification objects, _HID, _CID, _CLS, _SUB, _HRV,
+available to the driver can be used to identify the device and that is supposed
+to be sufficient to determine the meaning and purpose of all of the GPIO lines
+listed by the GpioIo()/GpioInt() resources returned by _CRS. In other words,
+the driver is supposed to know what to use the GpioIo()/GpioInt() resources for
+once it has identified the device. Having done that, it can simply assign names
+to the GPIO lines it is going to use and provide the GPIO subsystem with a
+mapping between those names and the ACPI GPIO resources corresponding to them.
+
+To do that, the driver needs to define a mapping table as a NULL-terminated
+array of struct acpi_gpio_mapping objects that each contain a name, a pointer
+to an array of line data (struct acpi_gpio_params) objects and the size of that
+array. Each struct acpi_gpio_params object consists of three fields,
+crs_entry_index, line_index, active_low, representing the index of the target
+GpioIo()/GpioInt() resource in _CRS starting from zero, the index of the target
+line in that resource starting from zero, and the active-low flag for that line,
+respectively, in analogy with the _DSD GPIO property format specified above.
+
+For the example Bluetooth device discussed previously the data structures in
+question would look like this:
+
+static const struct acpi_gpio_params reset_gpio = { 1, 1, false };
+static const struct acpi_gpio_params shutdown_gpio = { 0, 0, false };
+
+static const struct acpi_gpio_mapping bluetooth_acpi_gpios[] = {
+ { "reset-gpio", &reset_gpio, 1 },
+ { "shutdown-gpio", &shutdown_gpio, 1 },
+ { },
+};
+
+Next, the mapping table needs to be passed as the second argument to
+acpi_dev_add_driver_gpios() that will register it with the ACPI device object
+pointed to by its first argument. That should be done in the driver's .probe()
+routine. On removal, the driver should unregister its GPIO mapping table by
+calling acpi_dev_remove_driver_gpios() on the ACPI device object where that
+table was previously registered.
diff --git a/Documentation/arm64/arm-acpi.txt b/Documentation/arm64/arm-acpi.txt
new file mode 100644
index 0000000..17cf96d
--- /dev/null
+++ b/Documentation/arm64/arm-acpi.txt
@@ -0,0 +1,323 @@
+ACPI on ARMv8 Servers
+---------------------
+ACPI can be used for ARMv8 general purpose servers designed to follow
+the ARM SBSA (Server Base System Architecture) specification, currently
+available to those with an ARM login at http://silver.arm.com.
+
+The ARMv8 kernel implements the reduced hardware model of ACPI version
+5.1 and its corresponding errata. Links to the specification and all
+external documents it refers to are managed by the UEFI Forum. The
+specification is available at http://www.uefi.org/specifications and
+external documents can be found via http://www.uefi.org/acpi.
+
+If an ARMv8 system does not meet the requirements of the SBSA, or cannot
+be described using the mechanisms defined in the required ACPI specifications,
+then it is likely that Device Tree (DT) is more suitable than ACPI for the
+hardware.
+
+
+Relationship with Device Tree
+-----------------------------
+ACPI support in drivers and subsystems for ARMv8 should never be mutually
+exclusive with DT support at compile time.
+
+At boot time the kernel will only use one description method depending on
+parameters passed from the bootloader (including kernel bootargs).
+
+Regardless of whether DT or ACPI is used, the kernel must always be capable
+of booting with either scheme (in kernels with both schemes enabled at compile
+time).
+
+When booting using ACPI tables, the /chosen node in DT will still be parsed
+to extract the kernel command line and initrd path. No other section of the
+DT will be used.
+
+
+Booting using ACPI tables
+-------------------------
+The only defined method for passing ACPI tables to the kernel on ARMv8
+is via the UEFI system configuration table.
+
+Processing of ACPI tables may be disabled by passing acpi=off on the kernel
+command line; this is the default behavior. If acpi=force is used, the kernel
+will ONLY use device configuration information contained in the ACPI tables.
+
+In order for the kernel to load and use ACPI tables, the UEFI implementation
+MUST set the ACPI_20_TABLE_GUID to point to the RSDP table (the table with
+the ACPI signature "RSD PTR "). If this pointer is incorrect and acpi=force
+is used, the kernel will disable ACPI and try to use DT to boot.
+
+If the pointer to the RSDP table is correct, the table will be mapped into
+the kernel by the ACPI core, using the address provided by UEFI.
+
+The ACPI core will then locate and map in all other ACPI tables provided by
+using the addresses in the RSDP table to find the XSDT (eXtended System
+Description Table). The XSDT in turn provides the addresses to all other
+ACPI tables provided by the system firmware; the ACPI core will then traverse
+this table and map in the tables listed.
+
+The ACPI core will ignore any provided RSDT (Root System Description Table).
+RSDTs have been deprecated and are ignored on arm64 since they only allow
+for 32-bit addresses.
+
+Further, the ACPI core will only use the 64-bit address fields in the FADT
+(Fixed ACPI Description Table). Any 32-bit address fields in the FADT will
+be ignored on arm64.
+
+Hardware reduced mode (see Section 4.1 of the ACPI 5.1 specification) will
+be enforced by the ACPI core on arm64. Doing so allows the ACPI core to
+run less complex code since it no longer has to provide support for legacy
+hardware from other architectures.
+
+For the ACPI core to operate properly, and in turn provide the information
+the kernel needs to configure devices, it expects to find the following
+tables (all section numbers refer to the ACPI 5.1 specfication):
+
+ -- RSDP (Root System Description Pointer), section 5.2.5
+
+ -- XSDT (eXtended System Description Table), section 5.2.8
+
+ -- FACS (Firmware ACPI Control Structure), section 5.2.10
+
+ -- FADT (Fixed ACPI Description Table), section 5.2.9
+
+ -- DSDT (Differentiated System Description Table), section
+ 5.2.11.1
+
+ -- MADT (Multiple APIC Description Table), section 5.2.12
+
+ -- GTDT (Generic Timer Description Table), section 5.2.24
+
+ -- If PCI is supported, the MCFG (Memory mapped ConFiGuration
+ Table), section 5.2.6, specifically Table 5-31.
+
+If the above tables are not all present, the kernel may or may not be
+able to boot properly since it may not be able to configure all of the
+devices available.
+
+
+ACPI Detection
+--------------
+Drivers should determine their probe() type by checking for a null
+value for ACPI_HANDLE, or checking .of_node, or other information in
+the device structure. This is detailed further in the "Driver
+Recommendations" section.
+
+In non-driver code, if the presence of ACPI needs to be detected at
+runtime, then check the value of acpi_disabled. If CONFIG_ACPI is not
+set, acpi_disabled will always be 1.
+
+
+Device Enumeration
+------------------
+Device descriptions in ACPI should use standard recognized ACPI interfaces.
+These can contain less information than is typically provided via a Device
+Tree description for the same device. This is also one of the reasons that
+ACPI can be useful -- the driver takes into account that it may have less
+detailed information about the device and uses sensible defaults instead.
+If done properly in the driver, the hardware can change and improve over
+time without the driver having to change at all.
+
+Clocks provide an excellent example. In DT, clocks need to be specified
+and the drivers need to take them into account. In ACPI, the assumption
+is that UEFI will leave the device in a reasonable default state, including
+any clock settings. If for some reason the driver needs to change a clock
+value, this can be done in an ACPI method; all the driver needs to do is
+invoke the method and not concern itself with what the method needs to do
+to change the clock. Changing the hardware can then take place over time
+by changing what the ACPI method does, and not the driver.
+
+ACPI drivers should only look at one specific ASL object -- the _DSD object
+-- for device driver parameters (known in DT as "bindings", or "Device
+Properties" in ACPI). Not all DT bindings will be recognized. The UEFI
+Forum provides a mechanism for registering such bindings [URL TBD by ASWG]
+so that they may be used on any operating system supporting ACPI. Device
+properties that have not been registered with the UEFI Forum should not be
+used.
+
+Drivers should look for device properties in the _DSD object ONLY; the _DSD
+object is described in the ACPI specification section 6.2.5, but more
+specifically, use the _DSD Device Properties UUID:
+
+ -- UUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301
+
+ -- http://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf)
+
+The kernel has an interface for looking up device properties in a manner
+independent of whether DT or ACPI is being used and that interface should
+be used; it can eliminate some duplication of code paths in driver probing
+functions and discourage divergence between DT bindings and ACPI device
+properties.
+
+ACPI tables are described with a formal language called ASL, the ACPI
+Source Language (section 19 of the specification). This means that there
+are always multiple ways to describe the same thing -- including device
+properties. For example, device properties could use an ASL construct
+that looks like this: Name(KEY0, "value0"). An ACPI device driver would
+then retrieve the value of the property by evaluating the KEY0 object.
+However, using Name() this way has multiple problems: (1) ACPI limits
+names ("KEY0") to four characters unlike DT; (2) there is no industry
+wide registry that maintains a list of names, minimzing re-use; (3)
+there is also no registry for the definition of property values ("value0"),
+again making re-use difficult; and (4) how does one maintain backward
+compatibility as new hardware comes out? The _DSD method was created
+to solve precisely these sorts of problems; Linux drivers should ALWAYS
+use the _DSD method for device properties and nothing else.
+
+The _DSM object (ACPI Section 9.14.1) could also be used for conveying
+device properties to a driver. Linux drivers should only expect it to
+be used if _DSD cannot represent the data required, and there is no way
+to create a new UUID for the _DSD object. Note that there is even less
+regulation of the use of _DSM than there is of _DSD. Drivers that depend
+on the contents of _DSM objects will be more difficult to maintain over
+time because of this.
+
+The _DSD object is a very flexible mechanism in ACPI, as are the registered
+Device Properties. This flexibility allows _DSD to cover more than just the
+generic server case and care should be taken in device drivers not to expect
+it to replicate highly specific embedded behaviour from DT.
+
+Both DT bindings and ACPI device properties for device drivers have review
+processes. Use them. And, before creating new device properties, check to
+be sure that they have not been defined before and either registered in the
+Linux kernel documentation or the UEFI Forum. If the device drivers supports
+ACPI and DT, please make sure the device properties are consistent in both
+places.
+
+
+Programmable Power Control Resources
+------------------------------------
+Programmable power control resources include such resources as voltage/current
+providers (regulators) and clock sources.
+
+The kernel assumes that power control of these resources is represented with
+Power Resource Objects (ACPI section 7.1). The ACPI core will then handle
+correctly enabling and disabling resources as they are needed. In order to
+get that to work, ACPI assumes each device has defined D-states and that these
+can be controlled through the optional ACPI methods _PS0, _PS1, _PS2, and _PS3;
+in ACPI, _PS0 is the method to invoke to turn a device full on, and _PS3 is for
+turning a device full off.
+
+The kernel ACPI code will also assume that the _PS? methods follow the normal
+ACPI rules for such methods:
+
+ -- If either _PS0 or _PS3 is implemented, then the other method must also
+ be implemented.
+
+ -- If a device requires usage or setup of a power resource when on, the ASL
+ should organize that it is allocated/enabled using the _PS0 method.
+
+ -- Resources allocated or enabled in the _PS0 method should be disabled
+ or de-allocated in the _PS3 method.
+
+ -- Firmware will leave the resources in a reasonable state before handing
+ over control to the kernel.
+
+Such code in _PS? methods will of course be very platform specific. But,
+this allows the driver to abstract out the interface for operating the device
+and avoid having to read special non-standard values from ACPI tables. Further,
+abstracting the use of these resources allows the hardware to change over time
+without requiring updates to the driver.
+
+
+Clocks
+------
+ACPI makes the assumption that clocks are initialized by the firmware --
+UEFI, in this case -- to some working value before control is handed over
+to the kernel. This has implications for devices such as UARTs, or SoC
+driven LCD displays, for example.
+
+When the kernel boots, the clock is assumed to be set to reasonable
+working value. If for some reason the frequency needs to change -- e.g.,
+throttling for power management -- the device driver should expect that
+process to be abstracted out into some ACPI method that can be invoked
+(please see the ACPI specification for further recommendations on standard
+methods to be expected). If is not, there is no direct way for ACPI to
+control the clocks.
+
+
+Driver Recommendations
+----------------------
+DO NOT remove any DT handling when adding ACPI support for a driver. The
+same device may be used on many different systems.
+
+DO try to structure the driver so that it is data driven. That is, set up
+a struct containing internal per-device state based on defaults and whatever
+else must be discovered by the driver probe function. Then, have the rest
+of the driver operate off of the contents of that struct. Doing so should
+allow most divergence between ACPI and DT functionality to be kept local to
+the probe function instead of being scattered throughout the driver. For
+example:
+
+static int device_probe_dt(struct platform_device *pdev)
+{
+ /* DT specific functionality */
+ ...
+}
+
+static int device_probe_acpi(struct platform_device *pdev)
+{
+ /* ACPI specific functionality */
+ ...
+}
+
+static int device_probe(stuct platform_device *pdev)
+{
+ ...
+ struct device_node node = pdev->dev.of_node;
+ ...
+
+ if (node)
+ ret = device_probe_dt(pdev);
+ else if (ACPI_HANDLE(&pdev->dev))
+ ret = device_probe_acpi(pdev);
+ else
+ /* other initialization */
+ ...
+ /* Continue with any generic probe operations */
+ ...
+}
+
+DO keep the MODULE_DEVICE_TABLE entries together in the driver to make it
+clear the different names the driver is probed for, both from DT and from
+ACPI:
+
+static struct of_device_id virtio_mmio_match[] = {
+ { .compatible = "virtio,mmio", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, virtio_mmio_match);
+
+static const struct acpi_device_id virtio_mmio_acpi_match[] = {
+ { "LNRO0005", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, virtio_mmio_acpi_match);
+
+
+ASWG
+----
+The following areas are not yet fully defined for ARM in the 5.1 version
+of the ACPI specification and are expected to be worked through in the
+UEFI ACPI Specification Working Group (ASWG):
+
+ -- ACPI based CPU topology
+ -- ACPI based Power management
+ -- CPU idle control based on PSCI
+ -- CPU performance control (CPPC)
+ -- ACPI based SMMU
+ -- ITS support for GIC in MADT
+
+Participation in this group is open to all UEFI members. Please see
+http://www.uefi.org/workinggroup for details on group membership.
+
+It is the intent of the ARMv8 ACPI kernel code to follow the ACPI specification
+as closely as possible, and to only implement functionality that complies with
+the released standards from UEFI ASWG. As a practical matter, there will be
+vendors that provide bad ACPI tables or violate the standards in some way.
+If this is because of errors, quirks and fixups may be necessary, but will
+be avoided if possible. If there are features missing from ACPI that preclude
+it from being used on a platform, ECRs (Engineering Change Requests) should be
+submitted to ASWG and go through the normal approval process; for those that
+are not UEFI members, many other members of the Linux community are and would
+likely be willing to assist in submitting ECRs.
diff --git a/Documentation/gpio/consumer.txt b/Documentation/gpio/consumer.txt
index 6ce5441..859918d 100644
--- a/Documentation/gpio/consumer.txt
+++ b/Documentation/gpio/consumer.txt
@@ -219,6 +219,24 @@ part of the IRQ interface, e.g. IRQF_TRIGGER_FALLING, as are system wakeup
capabilities.
+GPIOs and ACPI
+==============
+
+On ACPI systems, GPIOs are described by GpioIo()/GpioInt() resources listed by
+the _CRS configuration objects of devices. Those resources do not provide
+connection IDs (names) for GPIOs, so it is necessary to use an additional
+mechanism for this purpose.
+
+Systems compliant with ACPI 5.1 or newer may provide a _DSD configuration object
+which, among other things, may be used to provide connection IDs for specific
+GPIOs described by the GpioIo()/GpioInt() resources in _CRS. If that is the
+case, it will be handled by the GPIO subsystem automatically. However, if the
+_DSD is not present, the mappings between GpioIo()/GpioInt() resources and GPIO
+connection IDs need to be provided by device drivers.
+
+For details refer to Documentation/acpi/gpio-properties.txt
+
+
Interacting With the Legacy GPIO Subsystem
==========================================
Many kernel subsystems still handle GPIOs using the legacy integer-based
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 479f332..6187d9b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -165,7 +165,7 @@ multipliers 'Kilo', 'Mega', and 'Giga', equalling 2^10, 2^20, and 2^30
bytes respectively. Such letter suffixes can also be entirely omitted.
- acpi= [HW,ACPI,X86]
+ acpi= [HW,ACPI,X86,ARM64]
Advanced Configuration and Power Interface
Format: { force | off | strict | noirq | rsdt }
force -- enable ACPI if default was off
@@ -175,6 +175,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
strictly ACPI specification compliant.
rsdt -- prefer RSDT over (default) XSDT
copy_dsdt -- copy DSDT to memory
+ For ARM64, ONLY "acpi=off" or "acpi=force" are available
See also Documentation/power/runtime_pm.txt, pci=noacpi
diff --git a/arch/arm/mach-s3c24xx/h1940-bluetooth.c b/arch/arm/mach-s3c24xx/h1940-bluetooth.c
index b4d14b8..9c8b127 100644
--- a/arch/arm/mach-s3c24xx/h1940-bluetooth.c
+++ b/arch/arm/mach-s3c24xx/h1940-bluetooth.c
@@ -41,7 +41,7 @@ static void h1940bt_enable(int on)
mdelay(10);
gpio_set_value(S3C2410_GPH(1), 0);
- h1940_led_blink_set(-EINVAL, GPIO_LED_BLINK, NULL, NULL);
+ h1940_led_blink_set(NULL, GPIO_LED_BLINK, NULL, NULL);
}
else {
gpio_set_value(S3C2410_GPH(1), 1);
@@ -50,7 +50,7 @@ static void h1940bt_enable(int on)
mdelay(10);
gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0);
- h1940_led_blink_set(-EINVAL, GPIO_LED_NO_BLINK_LOW, NULL, NULL);
+ h1940_led_blink_set(NULL, GPIO_LED_NO_BLINK_LOW, NULL, NULL);
}
}
diff --git a/arch/arm/mach-s3c24xx/h1940.h b/arch/arm/mach-s3c24xx/h1940.h
index 2950cc4..596d9f6 100644
--- a/arch/arm/mach-s3c24xx/h1940.h
+++ b/arch/arm/mach-s3c24xx/h1940.h
@@ -19,8 +19,10 @@
#define H1940_SUSPEND_RESUMEAT (0x30081000)
#define H1940_SUSPEND_CHECK (0x30080000)
+struct gpio_desc;
+
extern void h1940_pm_return(void);
-extern int h1940_led_blink_set(unsigned gpio, int state,
+extern int h1940_led_blink_set(struct gpio_desc *desc, int state,
unsigned long *delay_on,
unsigned long *delay_off);
diff --git a/arch/arm/mach-s3c24xx/mach-h1940.c b/arch/arm/mach-s3c24xx/mach-h1940.c
index d35ddc1..d40d4f5 100644
--- a/arch/arm/mach-s3c24xx/mach-h1940.c
+++ b/arch/arm/mach-s3c24xx/mach-h1940.c
@@ -359,10 +359,11 @@ static struct platform_device h1940_battery = {
static DEFINE_SPINLOCK(h1940_blink_spin);
-int h1940_led_blink_set(unsigned gpio, int state,
+int h1940_led_blink_set(struct gpio_desc *desc, int state,
unsigned long *delay_on, unsigned long *delay_off)
{
int blink_gpio, check_gpio1, check_gpio2;
+ int gpio = desc ? desc_to_gpio(desc) : -EINVAL;
switch (gpio) {
case H1940_LATCH_LED_GREEN:
diff --git a/arch/arm/mach-s3c24xx/mach-rx1950.c b/arch/arm/mach-s3c24xx/mach-rx1950.c
index c3f2682..1d35ff3 100644
--- a/arch/arm/mach-s3c24xx/mach-rx1950.c
+++ b/arch/arm/mach-s3c24xx/mach-rx1950.c
@@ -250,9 +250,10 @@ static void rx1950_disable_charger(void)
static DEFINE_SPINLOCK(rx1950_blink_spin);
-static int rx1950_led_blink_set(unsigned gpio, int state,
+static int rx1950_led_blink_set(struct gpio_desc *desc, int state,
unsigned long *delay_on, unsigned long *delay_off)
{
+ int gpio = desc_to_gpio(desc);
int blink_gpio, check_gpio;
switch (gpio) {
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c
index e048f61..e53fc8d 100644
--- a/arch/arm/plat-orion/gpio.c
+++ b/arch/arm/plat-orion/gpio.c
@@ -306,9 +306,10 @@ EXPORT_SYMBOL(orion_gpio_set_blink);
#define ORION_BLINK_HALF_PERIOD 100 /* ms */
-int orion_gpio_led_blink_set(unsigned gpio, int state,
+int orion_gpio_led_blink_set(struct gpio_desc *desc, int state,
unsigned long *delay_on, unsigned long *delay_off)
{
+ unsigned gpio = desc_to_gpio(desc);
if (delay_on && delay_off && !*delay_on && !*delay_off)
*delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
diff --git a/arch/arm/plat-orion/include/plat/orion-gpio.h b/arch/arm/plat-orion/include/plat/orion-gpio.h
index e763988..e856b07 100644
--- a/arch/arm/plat-orion/include/plat/orion-gpio.h
+++ b/arch/arm/plat-orion/include/plat/orion-gpio.h
@@ -14,12 +14,15 @@
#include <linux/init.h>
#include <linux/types.h>
#include <linux/irqdomain.h>
+
+struct gpio_desc;
+
/*
* Orion-specific GPIO API extensions.
*/
void orion_gpio_set_unused(unsigned pin);
void orion_gpio_set_blink(unsigned pin, int blink);
-int orion_gpio_led_blink_set(unsigned gpio, int state,
+int orion_gpio_led_blink_set(struct gpio_desc *desc, int state,
unsigned long *delay_on, unsigned long *delay_off);
#define GPIO_INPUT_OK (1 << 0)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 9532f8d..80a82ac 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -4,6 +4,7 @@ config ARM64
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ACPI_REDUCED_HARDWARE_ONLY if ACPI
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -34,6 +35,7 @@ config ARM64
select GENERIC_TIME_VSYSCALL
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
+ select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB
@@ -41,6 +43,7 @@ config ARM64
select HAVE_BPF_JIT
select HAVE_C_RECORDMCOUNT
select HAVE_CC_STACKPROTECTOR
+ select HAVE_CMPXCHG_DOUBLE
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
@@ -185,6 +188,9 @@ config PCI_DOMAINS_GENERIC
config PCI_SYSCALL
def_bool PCI
+config PCI_MMCONFIG
+ def_bool y if PCI && ACPI
+
source "drivers/pci/Kconfig"
source "drivers/pci/pcie/Kconfig"
source "drivers/pci/hotplug/Kconfig"
@@ -268,6 +274,9 @@ config SMP
If you don't know what to do here, say N.
+config ARM_PARKING_PROTOCOL
+ def_bool y if SMP
+
config SCHED_MC
bool "Multi-core scheduler support"
depends on SMP
@@ -401,6 +410,17 @@ config EFI
allow the kernel to be booted as an EFI application. This
is only useful on systems that have UEFI firmware.
+config DMI
+ bool "Enable support for SMBIOS (DMI) tables"
+ depends on EFI
+ default y
+ help
+ This enables SMBIOS/DMI feature for systems.
+
+ This option is only useful on systems that have UEFI firmware.
+ However, even with this option, the resultant kernel should
+ continue to boot on existing non-UEFI platforms.
+
endmenu
menu "Userspace binary formats"
@@ -454,6 +474,8 @@ source "drivers/Kconfig"
source "drivers/firmware/Kconfig"
+source "drivers/acpi/Kconfig"
+
source "fs/Kconfig"
source "arch/arm64/kvm/Kconfig"
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 20901ff..983d72a 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -49,6 +49,7 @@ core-$(CONFIG_NET) += arch/arm64/net/
core-$(CONFIG_KVM) += arch/arm64/kvm/
core-$(CONFIG_XEN) += arch/arm64/xen/
core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
+drivers-$(CONFIG_PCI) += arch/arm64/pci/
libs-y := arch/arm64/lib/ $(libs-y)
libs-y += $(LIBGCC)
libs-$(CONFIG_EFI_STUB) += drivers/firmware/efi/libstub/
diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
index 5562652..a38b02c 100644
--- a/arch/arm64/crypto/Kconfig
+++ b/arch/arm64/crypto/Kconfig
@@ -27,20 +27,19 @@ config CRYPTO_AES_ARM64_CE
tristate "AES core cipher using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
- select CRYPTO_AES
config CRYPTO_AES_ARM64_CE_CCM
tristate "AES in CCM mode using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_ALGAPI
- select CRYPTO_AES
+ select CRYPTO_AES_ARM64_CE
select CRYPTO_AEAD
config CRYPTO_AES_ARM64_CE_BLK
tristate "AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions"
depends on ARM64 && KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
- select CRYPTO_AES
+ select CRYPTO_AES_ARM64_CE
select CRYPTO_ABLK_HELPER
config CRYPTO_AES_ARM64_NEON_BLK
diff --git a/arch/arm64/crypto/aes-ce-ccm-glue.c b/arch/arm64/crypto/aes-ce-ccm-glue.c
index 9e6cdde..0ac73b8 100644
--- a/arch/arm64/crypto/aes-ce-ccm-glue.c
+++ b/arch/arm64/crypto/aes-ce-ccm-glue.c
@@ -16,6 +16,8 @@
#include <linux/crypto.h>
#include <linux/module.h>
+#include "aes-ce-setkey.h"
+
static int num_rounds(struct crypto_aes_ctx *ctx)
{
/*
@@ -48,7 +50,7 @@ static int ccm_setkey(struct crypto_aead *tfm, const u8 *in_key,
struct crypto_aes_ctx *ctx = crypto_aead_ctx(tfm);
int ret;
- ret = crypto_aes_expand_key(ctx, in_key, key_len);
+ ret = ce_aes_expandkey(ctx, in_key, key_len);
if (!ret)
return 0;
diff --git a/arch/arm64/crypto/aes-ce-cipher.c b/arch/arm64/crypto/aes-ce-cipher.c
index 2075e1a..ce47792 100644
--- a/arch/arm64/crypto/aes-ce-cipher.c
+++ b/arch/arm64/crypto/aes-ce-cipher.c
@@ -14,6 +14,8 @@
#include <linux/crypto.h>
#include <linux/module.h>
+#include "aes-ce-setkey.h"
+
MODULE_DESCRIPTION("Synchronous AES cipher using ARMv8 Crypto Extensions");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
MODULE_LICENSE("GPL v2");
@@ -124,6 +126,114 @@ static void aes_cipher_decrypt(struct crypto_tfm *tfm, u8 dst[], u8 const src[])
kernel_neon_end();
}
+/*
+ * aes_sub() - use the aese instruction to perform the AES sbox substitution
+ * on each byte in 'input'
+ */
+static u32 aes_sub(u32 input)
+{
+ u32 ret;
+
+ __asm__("dup v1.4s, %w[in] ;"
+ "movi v0.16b, #0 ;"
+ "aese v0.16b, v1.16b ;"
+ "umov %w[out], v0.4s[0] ;"
+
+ : [out] "=r"(ret)
+ : [in] "r"(input)
+ : "v0","v1");
+
+ return ret;
+}
+
+int ce_aes_expandkey(struct crypto_aes_ctx *ctx, const u8 *in_key,
+ unsigned int key_len)
+{
+ /*
+ * The AES key schedule round constants
+ */
+ static u8 const rcon[] = {
+ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
+ };
+
+ u32 kwords = key_len / sizeof(u32);
+ struct aes_block *key_enc, *key_dec;
+ int i, j;
+
+ if (key_len != AES_KEYSIZE_128 &&
+ key_len != AES_KEYSIZE_192 &&
+ key_len != AES_KEYSIZE_256)
+ return -EINVAL;
+
+ memcpy(ctx->key_enc, in_key, key_len);
+ ctx->key_length = key_len;
+
+ kernel_neon_begin_partial(2);
+ for (i = 0; i < sizeof(rcon); i++) {
+ u32 *rki = ctx->key_enc + (i * kwords);
+ u32 *rko = rki + kwords;
+
+ rko[0] = ror32(aes_sub(rki[kwords - 1]), 8) ^ rcon[i] ^ rki[0];
+ rko[1] = rko[0] ^ rki[1];
+ rko[2] = rko[1] ^ rki[2];
+ rko[3] = rko[2] ^ rki[3];
+
+ if (key_len == AES_KEYSIZE_192) {
+ if (i >= 7)
+ break;
+ rko[4] = rko[3] ^ rki[4];
+ rko[5] = rko[4] ^ rki[5];
+ } else if (key_len == AES_KEYSIZE_256) {
+ if (i >= 6)
+ break;
+ rko[4] = aes_sub(rko[3]) ^ rki[4];
+ rko[5] = rko[4] ^ rki[5];
+ rko[6] = rko[5] ^ rki[6];
+ rko[7] = rko[6] ^ rki[7];
+ }
+ }
+
+ /*
+ * Generate the decryption keys for the Equivalent Inverse Cipher.
+ * This involves reversing the order of the round keys, and applying
+ * the Inverse Mix Columns transformation on all but the first and
+ * the last one.
+ */
+ key_enc = (struct aes_block *)ctx->key_enc;
+ key_dec = (struct aes_block *)ctx->key_dec;
+ j = num_rounds(ctx);
+
+ key_dec[0] = key_enc[j];
+ for (i = 1, j--; j > 0; i++, j--)
+ __asm__("ld1 {v0.16b}, %[in] ;"
+ "aesimc v1.16b, v0.16b ;"
+ "st1 {v1.16b}, %[out] ;"
+
+ : [out] "=Q"(key_dec[i])
+ : [in] "Q"(key_enc[j])
+ : "v0","v1");
+ key_dec[i] = key_enc[0];
+
+ kernel_neon_end();
+ return 0;
+}
+EXPORT_SYMBOL(ce_aes_expandkey);
+
+int ce_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len)
+{
+ struct crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm);
+ int ret;
+
+ ret = ce_aes_expandkey(ctx, in_key, key_len);
+ if (!ret)
+ return 0;
+
+ tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ return -EINVAL;
+}
+EXPORT_SYMBOL(ce_aes_setkey);
+
static struct crypto_alg aes_alg = {
.cra_name = "aes",
.cra_driver_name = "aes-ce",
@@ -135,7 +245,7 @@ static struct crypto_alg aes_alg = {
.cra_cipher = {
.cia_min_keysize = AES_MIN_KEY_SIZE,
.cia_max_keysize = AES_MAX_KEY_SIZE,
- .cia_setkey = crypto_aes_set_key,
+ .cia_setkey = ce_aes_setkey,
.cia_encrypt = aes_cipher_encrypt,
.cia_decrypt = aes_cipher_decrypt
}
diff --git a/arch/arm64/crypto/aes-ce-setkey.h b/arch/arm64/crypto/aes-ce-setkey.h
new file mode 100644
index 0000000..f08a647
--- /dev/null
+++ b/arch/arm64/crypto/aes-ce-setkey.h
@@ -0,0 +1,5 @@
+
+int ce_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len);
+int ce_aes_expandkey(struct crypto_aes_ctx *ctx, const u8 *in_key,
+ unsigned int key_len);
diff --git a/arch/arm64/crypto/aes-glue.c b/arch/arm64/crypto/aes-glue.c
index 79cd911..801aae3 100644
--- a/arch/arm64/crypto/aes-glue.c
+++ b/arch/arm64/crypto/aes-glue.c
@@ -16,9 +16,13 @@
#include <linux/module.h>
#include <linux/cpufeature.h>
+#include "aes-ce-setkey.h"
+
#ifdef USE_V8_CRYPTO_EXTENSIONS
#define MODE "ce"
#define PRIO 300
+#define aes_setkey ce_aes_setkey
+#define aes_expandkey ce_aes_expandkey
#define aes_ecb_encrypt ce_aes_ecb_encrypt
#define aes_ecb_decrypt ce_aes_ecb_decrypt
#define aes_cbc_encrypt ce_aes_cbc_encrypt
@@ -30,6 +34,8 @@ MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions");
#else
#define MODE "neon"
#define PRIO 200
+#define aes_setkey crypto_aes_set_key
+#define aes_expandkey crypto_aes_expand_key
#define aes_ecb_encrypt neon_aes_ecb_encrypt
#define aes_ecb_decrypt neon_aes_ecb_decrypt
#define aes_cbc_encrypt neon_aes_cbc_encrypt
@@ -79,10 +85,10 @@ static int xts_set_key(struct crypto_tfm *tfm, const u8 *in_key,
struct crypto_aes_xts_ctx *ctx = crypto_tfm_ctx(tfm);
int ret;
- ret = crypto_aes_expand_key(&ctx->key1, in_key, key_len / 2);
+ ret = aes_expandkey(&ctx->key1, in_key, key_len / 2);
if (!ret)
- ret = crypto_aes_expand_key(&ctx->key2, &in_key[key_len / 2],
- key_len / 2);
+ ret = aes_expandkey(&ctx->key2, &in_key[key_len / 2],
+ key_len / 2);
if (!ret)
return 0;
@@ -288,7 +294,7 @@ static struct crypto_alg aes_algs[] = { {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
- .setkey = crypto_aes_set_key,
+ .setkey = aes_setkey,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
},
@@ -306,7 +312,7 @@ static struct crypto_alg aes_algs[] = { {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
- .setkey = crypto_aes_set_key,
+ .setkey = aes_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
},
@@ -324,7 +330,7 @@ static struct crypto_alg aes_algs[] = { {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
- .setkey = crypto_aes_set_key,
+ .setkey = aes_setkey,
.encrypt = ctr_encrypt,
.decrypt = ctr_encrypt,
},
diff --git a/arch/arm64/include/asm/acenv.h b/arch/arm64/include/asm/acenv.h
new file mode 100644
index 0000000..b49166f
--- /dev/null
+++ b/arch/arm64/include/asm/acenv.h
@@ -0,0 +1,18 @@
+/*
+ * ARM64 specific ACPICA environments and implementation
+ *
+ * Copyright (C) 2014, Linaro Ltd.
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _ASM_ACENV_H
+#define _ASM_ACENV_H
+
+/* It is required unconditionally by ACPI core, update it when needed. */
+
+#endif /* _ASM_ACENV_H */
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
new file mode 100644
index 0000000..6e692f4
--- /dev/null
+++ b/arch/arm64/include/asm/acpi.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ */
+
+#ifndef _ASM_ACPI_H
+#define _ASM_ACPI_H
+
+#include <asm/smp_plat.h>
+
+/* Basic configuration for ACPI */
+#ifdef CONFIG_ACPI
+#define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */
+extern int acpi_disabled;
+extern int acpi_noirq;
+extern int acpi_pci_disabled;
+
+/* 1 to indicate PSCI 0.2+ is implemented */
+static inline bool acpi_psci_present(void)
+{
+ return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_COMPLIANT;
+}
+
+/* 1 to indicate HVC must be used instead of SMC as the PSCI conduit */
+static inline bool acpi_psci_use_hvc(void)
+{
+ return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_USE_HVC;
+}
+
+static inline void disable_acpi(void)
+{
+ acpi_disabled = 1;
+ acpi_pci_disabled = 1;
+ acpi_noirq = 1;
+}
+
+static inline void enable_acpi(void)
+{
+ acpi_disabled = 0;
+ acpi_pci_disabled = 0;
+ acpi_noirq = 0;
+}
+
+/* MPIDR value provided in GICC structure is 64 bits, but the
+ * existing apic_id (CPU hardware ID) using in acpi processor
+ * driver is 32-bit, to conform to the same datatype we need
+ * to repack the GICC structure MPIDR.
+ *
+ * Only 32 bits of MPIDR are used:
+ *
+ * Bits [0:7] Aff0;
+ * Bits [8:15] Aff1;
+ * Bits [16:23] Aff2;
+ * Bits [32:39] Aff3;
+ */
+static inline u32 pack_mpidr(u64 mpidr)
+{
+ return (u32) ((mpidr & 0xff00000000) >> 8) | mpidr;
+}
+
+/*
+ * The ACPI processor driver for ACPI core code needs this macro
+ * to find out this cpu was already mapped (mapping from CPU hardware
+ * ID to CPU logical ID) or not.
+ *
+ * cpu_logical_map(cpu) is the mapping of MPIDR and the logical cpu,
+ * and MPIDR is the cpu hardware ID we needed to pack.
+ */
+#define cpu_physical_id(cpu) pack_mpidr(cpu_logical_map(cpu))
+
+/*
+ * It's used from ACPI core in kdump to boot UP system with SMP kernel,
+ * with this check the ACPI core will not override the CPU index
+ * obtained from GICC with 0 and not print some error message as well.
+ * Since MADT must provide at least one GICC structure for GIC
+ * initialization, CPU will be always available in MADT on ARM64.
+ */
+static inline bool acpi_has_cpu_in_madt(void)
+{
+ return true;
+}
+
+static inline void arch_fix_phys_package_id(int num, u32 slot) { }
+void __init acpi_smp_init_cpus(void);
+
+extern int acpi_get_cpu_parked_address(int cpu, u64 *addr);
+
+#else
+static inline void disable_acpi(void) { }
+static inline bool acpi_psci_present(void) { return false; }
+static inline bool acpi_psci_use_hvc(void) { return false; }
+static inline void acpi_smp_init_cpus(void) { }
+static inline int acpi_get_cpu_parked_address(int cpu, u64 *addr) { return -EOPNOTSUPP; }
+#endif /* CONFIG_ACPI */
+
+#endif /*_ASM_ACPI_H*/
diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
index ddb9d78..89e397b 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -19,6 +19,7 @@
#define __ASM_CMPXCHG_H
#include <linux/bug.h>
+#include <linux/mmdebug.h>
#include <asm/barrier.h>
@@ -152,6 +153,51 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
return oldval;
}
+#define system_has_cmpxchg_double() 1
+
+static inline int __cmpxchg_double(volatile void *ptr1, volatile void *ptr2,
+ unsigned long old1, unsigned long old2,
+ unsigned long new1, unsigned long new2, int size)
+{
+ unsigned long loop, lost;
+
+ switch (size) {
+ case 8:
+ VM_BUG_ON((unsigned long *)ptr2 - (unsigned long *)ptr1 != 1);
+ do {
+ asm volatile("// __cmpxchg_double8\n"
+ " ldxp %0, %1, %2\n"
+ " eor %0, %0, %3\n"
+ " eor %1, %1, %4\n"
+ " orr %1, %0, %1\n"
+ " mov %w0, #0\n"
+ " cbnz %1, 1f\n"
+ " stxp %w0, %5, %6, %2\n"
+ "1:\n"
+ : "=&r"(loop), "=&r"(lost), "+Q" (*(u64 *)ptr1)
+ : "r" (old1), "r"(old2), "r"(new1), "r"(new2));
+ } while (loop);
+ break;
+ default:
+ BUILD_BUG();
+ }
+
+ return !lost;
+}
+
+static inline int __cmpxchg_double_mb(volatile void *ptr1, volatile void *ptr2,
+ unsigned long old1, unsigned long old2,
+ unsigned long new1, unsigned long new2, int size)
+{
+ int ret;
+
+ smp_mb();
+ ret = __cmpxchg_double(ptr1, ptr2, old1, old2, new1, new2, size);
+ smp_mb();
+
+ return ret;
+}
+
static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old,
unsigned long new, int size)
{
@@ -182,6 +228,31 @@ static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old,
__ret; \
})
+#define cmpxchg_double(ptr1, ptr2, o1, o2, n1, n2) \
+({\
+ int __ret;\
+ __ret = __cmpxchg_double_mb((ptr1), (ptr2), (unsigned long)(o1), \
+ (unsigned long)(o2), (unsigned long)(n1), \
+ (unsigned long)(n2), sizeof(*(ptr1)));\
+ __ret; \
+})
+
+#define cmpxchg_double_local(ptr1, ptr2, o1, o2, n1, n2) \
+({\
+ int __ret;\
+ __ret = __cmpxchg_double((ptr1), (ptr2), (unsigned long)(o1), \
+ (unsigned long)(o2), (unsigned long)(n1), \
+ (unsigned long)(n2), sizeof(*(ptr1)));\
+ __ret; \
+})
+
+#define this_cpu_cmpxchg_8(ptr, o, n) \
+ cmpxchg_local(raw_cpu_ptr(&(ptr)), o, n)
+
+#define this_cpu_cmpxchg_double_8(ptr1, ptr2, o1, o2, n1, n2) \
+ cmpxchg_double_local(raw_cpu_ptr(&(ptr1)), raw_cpu_ptr(&(ptr2)), \
+ o1, o2, n1, n2)
+
#define cmpxchg64(ptr,o,n) cmpxchg((ptr),(o),(n))
#define cmpxchg64_local(ptr,o,n) cmpxchg_local((ptr),(o),(n))
diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h
index 6f8e2ef..978f567 100644
--- a/arch/arm64/include/asm/cpu_ops.h
+++ b/arch/arm64/include/asm/cpu_ops.h
@@ -64,6 +64,7 @@ struct cpu_operations {
};
extern const struct cpu_operations *cpu_ops[NR_CPUS];
+const struct cpu_operations *cpu_get_ops(const char *name);
int __init cpu_read_ops(struct device_node *dn, int cpu);
void __init cpu_read_bootcpu_ops(void);
diff --git a/arch/arm64/include/asm/dmi.h b/arch/arm64/include/asm/dmi.h
new file mode 100644
index 0000000..69d37d8
--- /dev/null
+++ b/arch/arm64/include/asm/dmi.h
@@ -0,0 +1,31 @@
+/*
+ * arch/arm64/include/asm/dmi.h
+ *
+ * Copyright (C) 2013 Linaro Limited.
+ * Written by: Yi Li (yi.li@linaro.org)
+ *
+ * based on arch/ia64/include/asm/dmi.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef __ASM_DMI_H
+#define __ASM_DMI_H
+
+#include <linux/io.h>
+#include <linux/slab.h>
+
+/*
+ * According to section 2.3.6 of the UEFI spec, the firmware should not
+ * request a virtual mapping for configuration tables such as SMBIOS.
+ * This means we have to map them before use.
+ */
+#define dmi_early_remap(x, l) ioremap_cache(x, l)
+#define dmi_early_unmap(x, l) iounmap(x)
+#define dmi_remap(x, l) ioremap_cache(x, l)
+#define dmi_unmap(x) iounmap(x)
+#define dmi_alloc(l) kzalloc(l, GFP_KERNEL)
+
+#endif
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h
index 1f65be3..c0f89a0 100644
--- a/arch/arm64/include/asm/elf.h
+++ b/arch/arm64/include/asm/elf.h
@@ -114,7 +114,8 @@ typedef struct user_fpsimd_state elf_fpregset_t;
*/
#define elf_check_arch(x) ((x)->e_machine == EM_AARCH64)
-#define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X)
+#define elf_read_implies_exec(ex,stk) (test_thread_flag(TIF_32BIT) \
+ ? (stk == EXSTACK_ENABLE_X) : 0)
#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE PAGE_SIZE
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 7fd3e27..8afb863 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -18,6 +18,7 @@
#ifndef __ARM64_KVM_ARM_H__
#define __ARM64_KVM_ARM_H__
+#include <asm/memory.h>
#include <asm/types.h>
/* Hyp Configuration Register (HCR) bits */
@@ -160,9 +161,9 @@
#endif
#define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
-#define VTTBR_BADDR_MASK (((1LLU << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
-#define VTTBR_VMID_SHIFT (48LLU)
-#define VTTBR_VMID_MASK (0xffLLU << VTTBR_VMID_SHIFT)
+#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
+#define VTTBR_VMID_SHIFT (UL(48))
+#define VTTBR_VMID_MASK (UL(0xFF) << VTTBR_VMID_SHIFT)
/* Hyp System Trap Register */
#define HSTR_EL2_TTEE (1 << 16)
@@ -185,13 +186,13 @@
/* Exception Syndrome Register (ESR) bits */
#define ESR_EL2_EC_SHIFT (26)
-#define ESR_EL2_EC (0x3fU << ESR_EL2_EC_SHIFT)
-#define ESR_EL2_IL (1U << 25)
+#define ESR_EL2_EC (UL(0x3f) << ESR_EL2_EC_SHIFT)
+#define ESR_EL2_IL (UL(1) << 25)
#define ESR_EL2_ISS (ESR_EL2_IL - 1)
#define ESR_EL2_ISV_SHIFT (24)
-#define ESR_EL2_ISV (1U << ESR_EL2_ISV_SHIFT)
+#define ESR_EL2_ISV (UL(1) << ESR_EL2_ISV_SHIFT)
#define ESR_EL2_SAS_SHIFT (22)
-#define ESR_EL2_SAS (3U << ESR_EL2_SAS_SHIFT)
+#define ESR_EL2_SAS (UL(3) << ESR_EL2_SAS_SHIFT)
#define ESR_EL2_SSE (1 << 21)
#define ESR_EL2_SRT_SHIFT (16)
#define ESR_EL2_SRT_MASK (0x1f << ESR_EL2_SRT_SHIFT)
@@ -205,16 +206,16 @@
#define ESR_EL2_FSC_TYPE (0x3c)
#define ESR_EL2_CV_SHIFT (24)
-#define ESR_EL2_CV (1U << ESR_EL2_CV_SHIFT)
+#define ESR_EL2_CV (UL(1) << ESR_EL2_CV_SHIFT)
#define ESR_EL2_COND_SHIFT (20)
-#define ESR_EL2_COND (0xfU << ESR_EL2_COND_SHIFT)
+#define ESR_EL2_COND (UL(0xf) << ESR_EL2_COND_SHIFT)
#define FSC_FAULT (0x04)
#define FSC_PERM (0x0c)
/* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
-#define HPFAR_MASK (~0xFUL)
+#define HPFAR_MASK (~UL(0xf))
#define ESR_EL2_EC_UNKNOWN (0x00)
#define ESR_EL2_EC_WFI (0x01)
diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
index 872ba93..2f287a6 100644
--- a/arch/arm64/include/asm/pci.h
+++ b/arch/arm64/include/asm/pci.h
@@ -33,5 +33,56 @@ static inline int pci_proc_domain(struct pci_bus *bus)
}
#endif /* CONFIG_PCI */
+/* "PCI MMCONFIG %04x [bus %02x-%02x]" */
+#define PCI_MMCFG_RESOURCE_NAME_LEN (22 + 4 + 2 + 2)
+
+#define PCI_MMCFG_BUS_OFFSET(bus) ((bus) << 20)
+
+struct acpi_device;
+
+struct pci_sysdata {
+ int domain; /* PCI domain */
+ int node; /* NUMA node */
+ struct acpi_device *companion; /* ACPI companion device */
+ void *iommu; /* IOMMU private data */
+};
+
+struct acpi_pci_root;
+struct pci_mmcfg_region;
+
+typedef int (*acpi_mcfg_fixup_t)(struct acpi_pci_root *root,
+ struct pci_mmcfg_region *cfg);
+
+struct pci_mmcfg_region {
+ struct list_head list;
+ struct resource res;
+ int (*read)(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value);
+ int (*write)(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value);
+ acpi_mcfg_fixup_t fixup;
+ void *data;
+ u64 address;
+ char __iomem *virt;
+ u16 segment;
+ u8 start_bus;
+ u8 end_bus;
+ char name[PCI_MMCFG_RESOURCE_NAME_LEN];
+};
+
+struct acpi_mcfg_fixup {
+ char oem_id[7];
+ char oem_table_id[9];
+ acpi_mcfg_fixup_t hook;
+};
+
+/* Designate a routine to fix up buggy MCFG */
+#define DECLARE_ACPI_MCFG_FIXUP(oem_id, table_id, hook) \
+ static const struct acpi_mcfg_fixup __acpi_fixup_##hook __used \
+ __attribute__((__section__(".acpi_fixup_mcfg"), aligned((sizeof(void *))))) \
+ = { {oem_id}, {table_id}, hook };
+
+extern struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus);
+
#endif /* __KERNEL__ */
#endif /* __ASM_PCI_H */
diff --git a/arch/arm64/include/asm/psci.h b/arch/arm64/include/asm/psci.h
index e5312ea..2454bc5 100644
--- a/arch/arm64/include/asm/psci.h
+++ b/arch/arm64/include/asm/psci.h
@@ -14,6 +14,7 @@
#ifndef __ASM_PSCI_H
#define __ASM_PSCI_H
-int psci_init(void);
+int psci_dt_init(void);
+int psci_acpi_init(void);
#endif /* __ASM_PSCI_H */
diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h
index 780f82c..3411561 100644
--- a/arch/arm64/include/asm/smp.h
+++ b/arch/arm64/include/asm/smp.h
@@ -39,9 +39,10 @@ extern void show_ipi_list(struct seq_file *p, int prec);
extern void handle_IPI(int ipinr, struct pt_regs *regs);
/*
- * Setup the set of possible CPUs (via set_cpu_possible)
+ * Discover the set of possible CPUs and determine their
+ * SMP operations.
*/
-extern void smp_init_cpus(void);
+extern void of_smp_init_cpus(void);
/*
* Provide a function to raise an IPI cross call on CPUs in callmap.
@@ -51,6 +52,11 @@ extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int));
extern void (*__smp_cross_call)(const struct cpumask *, unsigned int);
/*
+ * Provide a function to signal a parked secondary CPU.
+ */
+extern void set_smp_boot_wakeup_call(void (*)(int cpu));
+
+/*
* Called from the secondary holding pen, this is the secondary CPU entry point.
*/
asmlinkage void secondary_start_kernel(void);
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 5bd029b..f4ba4fe 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -21,7 +21,8 @@ arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \
sys_compat.o
arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o
arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o
-arm64-obj-$(CONFIG_SMP) += smp.o smp_spin_table.o topology.o
+arm64-obj-$(CONFIG_SMP) += smp.o smp_spin_table.o topology.o \
+ smp_parking_protocol.o
arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o
arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
@@ -31,6 +32,7 @@ arm64-obj-$(CONFIG_JUMP_LABEL) += jump_label.o
arm64-obj-$(CONFIG_KGDB) += kgdb.o
arm64-obj-$(CONFIG_EFI) += efi.o efi-stub.o efi-entry.o
arm64-obj-$(CONFIG_PCI) += pci.o
+arm64-obj-$(CONFIG_ACPI) += acpi.o
obj-y += $(arm64-obj-y) vdso/
obj-m += $(arm64-obj-m)
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
new file mode 100644
index 0000000..06a96be
--- /dev/null
+++ b/arch/arm64/kernel/acpi.c
@@ -0,0 +1,398 @@
+/*
+ * ARM64 Specific Low-Level ACPI Boot Support
+ *
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Al Stone <al.stone@linaro.org>
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ * Author: Hanjun Guo <hanjun.guo@linaro.org>
+ * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
+ * Author: Naresh Bhat <naresh.bhat@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) "ACPI: " fmt
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/cpumask.h>
+#include <linux/memblock.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/bootmem.h>
+#include <linux/smp.h>
+#include <linux/irqchip/arm-gic-acpi.h>
+
+#include <asm/cputype.h>
+#include <asm/cpu_ops.h>
+
+int acpi_noirq; /* skip ACPI IRQ initialization */
+int acpi_disabled;
+EXPORT_SYMBOL(acpi_disabled);
+
+int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
+EXPORT_SYMBOL(acpi_pci_disabled);
+
+static int enabled_cpus; /* Processors (GICC) with enabled flag in MADT */
+
+static char *boot_method;
+static u64 parked_address[NR_CPUS];
+
+/*
+ * Since we're on ARM, the default interrupt routing model
+ * clearly has to be GIC.
+ */
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC;
+
+/*
+ * __acpi_map_table() will be called before page_init(), so early_ioremap()
+ * or early_memremap() should be called here to for ACPI table mapping.
+ */
+char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+{
+ if (!phys || !size)
+ return NULL;
+
+ return early_memremap(phys, size);
+}
+
+void __init __acpi_unmap_table(char *map, unsigned long size)
+{
+ if (!map || !size)
+ return;
+
+ early_memunmap(map, size);
+}
+
+/**
+ * acpi_map_gic_cpu_interface - generates a logical cpu number
+ * and map to MPIDR represented by GICC structure
+ * @mpidr: CPU's hardware id to register, MPIDR represented in MADT
+ * @enabled: this cpu is enabled or not
+ *
+ * Returns the logical cpu number which maps to MPIDR
+ */
+static int acpi_map_gic_cpu_interface(u64 mpidr, u64 parked_addr, u8 enabled)
+{
+ int cpu;
+
+ if (mpidr == INVALID_HWID) {
+ pr_info("Skip MADT cpu entry with invalid MPIDR\n");
+ return -EINVAL;
+ }
+
+ total_cpus++;
+ if (!enabled)
+ return -EINVAL;
+
+ if (enabled_cpus >= NR_CPUS) {
+ pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n",
+ NR_CPUS, total_cpus, mpidr);
+ return -EINVAL;
+ }
+
+ /* No need to check duplicate MPIDRs for the first CPU */
+ if (enabled_cpus) {
+ /*
+ * Duplicate MPIDRs are a recipe for disaster. Scan
+ * all initialized entries and check for
+ * duplicates. If any is found just ignore the CPU.
+ */
+ for_each_possible_cpu(cpu) {
+ if (cpu_logical_map(cpu) == mpidr) {
+ pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n",
+ mpidr);
+ return -EINVAL;
+ }
+ }
+
+ /* allocate a logical cpu id for the new comer */
+ cpu = cpumask_next_zero(-1, cpu_possible_mask);
+ } else {
+ /*
+ * First GICC entry must be BSP as ACPI spec said
+ * in section 5.2.12.15
+ */
+ if (cpu_logical_map(0) != mpidr) {
+ pr_err("First GICC entry with MPIDR 0x%llx is not BSP\n",
+ mpidr);
+ return -EINVAL;
+ }
+
+ /*
+ * boot_cpu_init() already hold bit 0 in cpu_present_mask
+ * for BSP, no need to allocate again.
+ */
+ cpu = 0;
+ }
+
+ parked_address[cpu] = parked_addr;
+
+ /* CPU 0 was already initialized */
+ if (cpu) {
+ cpu_ops[cpu] = cpu_get_ops(boot_method);
+ if (!cpu_ops[cpu])
+ return -EINVAL;
+
+ if (cpu_ops[cpu]->cpu_init(NULL, cpu))
+ return -EOPNOTSUPP;
+
+ /* map the logical cpu id to cpu MPIDR */
+ cpu_logical_map(cpu) = mpidr;
+
+ set_cpu_possible(cpu, true);
+ } else {
+ /* get cpu0's ops, no need to return if ops is null */
+ cpu_ops[0] = cpu_get_ops(boot_method);
+ }
+
+ enabled_cpus++;
+ return cpu;
+}
+
+static int __init
+acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_interrupt *processor;
+
+ processor = (struct acpi_madt_generic_interrupt *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ acpi_map_gic_cpu_interface(processor->arm_mpidr & MPIDR_HWID_BITMASK,
+ processor->parked_address, processor->flags & ACPI_MADT_ENABLED);
+
+ return 0;
+}
+
+/* Parse GIC cpu interface entries in MADT for SMP init */
+void __init acpi_smp_init_cpus(void)
+{
+ int count;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including disabled CPUs, and get information
+ * we need for SMP init
+ */
+ count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ acpi_parse_gic_cpu_interface, 0);
+
+ if (!count) {
+ pr_err("No GIC CPU interface entries present\n");
+ return;
+ } else if (count < 0) {
+ pr_err("Error parsing GIC CPU interface entry\n");
+ return;
+ }
+
+ /* Make boot-up look pretty */
+ pr_info("%d CPUs enabled, %d CPUs total\n", enabled_cpus, total_cpus);
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ *irq = irq_find_mapping(NULL, gsi);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
+
+/*
+ * success: return IRQ number (>0)
+ * failure: return =< 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
+{
+ unsigned int irq;
+ unsigned int irq_type;
+
+ /*
+ * ACPI have no bindings to indicate SPI or PPI, so we
+ * use different mappings from DT in ACPI.
+ *
+ * For FDT
+ * PPI interrupt: in the range [0, 15];
+ * SPI interrupt: in the range [0, 987];
+ *
+ * For ACPI, GSI should be unique so using
+ * the hwirq directly for the mapping:
+ * PPI interrupt: in the range [16, 31];
+ * SPI interrupt: in the range [32, 1019];
+ */
+
+ if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_EDGE_FALLING;
+ else if (trigger == ACPI_EDGE_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_EDGE_RISING;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_LOW)
+ irq_type = IRQ_TYPE_LEVEL_LOW;
+ else if (trigger == ACPI_LEVEL_SENSITIVE &&
+ polarity == ACPI_ACTIVE_HIGH)
+ irq_type = IRQ_TYPE_LEVEL_HIGH;
+ else
+ irq_type = IRQ_TYPE_NONE;
+
+ /*
+ * Since only one GIC is supported in ACPI 5.0, we can
+ * create mapping refer to the default domain
+ */
+ irq = irq_create_mapping(NULL, gsi);
+ if (!irq)
+ return irq;
+
+ /* Set irq type if specified and different than the current one */
+ if (irq_type != IRQ_TYPE_NONE &&
+ irq_type != irq_get_trigger_type(irq))
+ irq_set_irq_type(irq, irq_type);
+ return irq;
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_fadt *fadt = (struct acpi_table_fadt *)table;
+
+ /*
+ * Revision in table header is the FADT Major revision,
+ * and there is a minor revision of FADT which was introduced
+ * by ACPI 5.1, we only deal with ACPI 5.1 or newer revision
+ * to get arm boot flags, or we will disable ACPI.
+ */
+ if (table->revision > 5 ||
+ (table->revision == 5 && fadt->minor_revision >= 1)) {
+ /*
+ * ACPI 5.1 only has two explicit methods to boot up SMP,
+ * PSCI and Parking protocol, but the Parking protocol is
+ * only specified for ARMv7 now, so make PSCI as the only
+ * way for the SMP boot protocol before some updates for
+ * the ACPI spec or the Parking protocol spec.
+ */
+ if (acpi_psci_present())
+ boot_method = "psci";
+ else if (IS_ENABLED(CONFIG_ARM_PARKING_PROTOCOL))
+ boot_method = "parking-protocol";
+
+ if (!boot_method)
+ pr_warn("No boot method, will not bring up secondary CPUs\n");
+ return -EOPNOTSUPP;
+ }
+
+ pr_warn("Unsupported FADT revision %d.%d, should be 5.1+, will disable ACPI\n",
+ table->revision, fadt->minor_revision);
+ disable_acpi();
+
+ return -EINVAL;
+}
+
+/*
+ * acpi_boot_table_init() called from setup_arch(), always.
+ * 1. find RSDP and get its address, and then find XSDT
+ * 2. extract all tables and checksums them all
+ * 3. check ACPI FADT revisoin
+ *
+ * We can parse ACPI boot-time tables such as MADT after
+ * this function is called.
+ */
+void __init acpi_boot_table_init(void)
+{
+ /* If acpi_disabled, bail out */
+ if (acpi_disabled)
+ return;
+
+ /* Initialize the ACPI boot-time table parser. */
+ if (acpi_table_init()) {
+ disable_acpi();
+ return;
+ }
+
+ if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt))
+ pr_err("Can't find FADT or error happened during parsing FADT\n");
+}
+
+void __init acpi_gic_init(void)
+{
+ struct acpi_table_header *table;
+ acpi_status status;
+ acpi_size tbl_size;
+ int err;
+
+ status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
+ if (ACPI_FAILURE(status)) {
+ const char *msg = acpi_format_exception(status);
+
+ pr_err("Failed to get MADT table, %s\n", msg);
+ return;
+ }
+
+ err = gic_v2_acpi_init(table);
+ if (err)
+ pr_err("Failed to initialize GIC IRQ controller");
+
+ early_acpi_os_unmap_memory((char *)table, tbl_size);
+}
+
+/*
+ * Parked Address in ACPI GIC structure will be used as the CPU
+ * release address
+ */
+int acpi_get_cpu_parked_address(int cpu, u64 *addr)
+{
+ if (!addr || !parked_address[cpu])
+ return -EINVAL;
+
+ *addr = parked_address[cpu];
+
+ return 0;
+}
+
+static int __init parse_acpi(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ /* "acpi=off" disables both ACPI table parsing and interpreter */
+ if (strcmp(arg, "off") == 0)
+ disable_acpi();
+ else if (strcmp(arg, "force") == 0) /* force ACPI to be enabled */
+ enable_acpi();
+ else
+ return -EINVAL; /* Core will print when we return error */
+
+ return 0;
+}
+early_param("acpi", parse_acpi);
+
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+ return -1;
+}
+
+int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
index cce9524..1d90f31 100644
--- a/arch/arm64/kernel/cpu_ops.c
+++ b/arch/arm64/kernel/cpu_ops.c
@@ -23,19 +23,23 @@
#include <linux/string.h>
extern const struct cpu_operations smp_spin_table_ops;
+extern const struct cpu_operations smp_parking_protocol_ops;
extern const struct cpu_operations cpu_psci_ops;
const struct cpu_operations *cpu_ops[NR_CPUS];
-static const struct cpu_operations *supported_cpu_ops[] __initconst = {
+static const struct cpu_operations *supported_cpu_ops[] = {
#ifdef CONFIG_SMP
&smp_spin_table_ops,
+#ifdef CONFIG_ARM_PARKING_PROTOCOL
+ &smp_parking_protocol_ops,
+#endif
#endif
&cpu_psci_ops,
NULL,
};
-static const struct cpu_operations * __init cpu_get_ops(const char *name)
+const struct cpu_operations *cpu_get_ops(const char *name)
{
const struct cpu_operations **ops = supported_cpu_ops;
diff --git a/arch/arm64/kernel/efi-entry.S b/arch/arm64/kernel/efi-entry.S
index d18a449..8ce9b05 100644
--- a/arch/arm64/kernel/efi-entry.S
+++ b/arch/arm64/kernel/efi-entry.S
@@ -61,7 +61,8 @@ ENTRY(efi_stub_entry)
*/
mov x20, x0 // DTB address
ldr x0, [sp, #16] // relocated _text address
- mov x21, x0
+ ldr x21, =stext_offset
+ add x21, x0, x21
/*
* Calculate size of the kernel Image (same for original and copy).
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 95c49eb..f9de195 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -11,6 +11,7 @@
*
*/
+#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/export.h>
#include <linux/memblock.h>
@@ -112,8 +113,6 @@ static int __init uefi_init(void)
efi.systab->hdr.revision & 0xffff, vendor);
retval = efi_config_init(NULL);
- if (retval == 0)
- set_bit(EFI_CONFIG_TABLES, &efi.flags);
out:
early_memunmap(efi.systab, sizeof(efi_system_table_t));
@@ -125,17 +124,17 @@ out:
*/
static __init int is_reserve_region(efi_memory_desc_t *md)
{
- if (!is_normal_ram(md))
+ switch (md->type) {
+ case EFI_LOADER_CODE:
+ case EFI_LOADER_DATA:
+ case EFI_BOOT_SERVICES_CODE:
+ case EFI_BOOT_SERVICES_DATA:
+ case EFI_CONVENTIONAL_MEMORY:
return 0;
-
- if (md->attribute & EFI_MEMORY_RUNTIME)
- return 1;
-
- if (md->type == EFI_ACPI_RECLAIM_MEMORY ||
- md->type == EFI_RESERVED_TYPE)
- return 1;
-
- return 0;
+ default:
+ break;
+ }
+ return is_normal_ram(md);
}
static __init void reserve_regions(void)
@@ -471,3 +470,54 @@ err_unmap:
return -1;
}
early_initcall(arm64_enter_virtual_mode);
+
+static int __init arm64_dmi_init(void)
+{
+ /*
+ * On arm64, DMI depends on UEFI, and dmi_scan_machine() needs to
+ * be called early because dmi_id_init(), which is an arch_initcall
+ * itself, depends on dmi_scan_machine() having been called already.
+ */
+ dmi_scan_machine();
+ if (dmi_available)
+ dmi_set_dump_stack_arch_desc();
+ return 0;
+}
+core_initcall(arm64_dmi_init);
+
+/*
+ * If nothing else is handling pm_power_off, use EFI
+ *
+ * When Guenter Roeck's power-off handler call chain patches land,
+ * we just need to return true unconditionally.
+ */
+bool efi_poweroff_required(void)
+{
+ return pm_power_off == NULL;
+}
+
+static int arm64_efi_restart(struct notifier_block *this,
+ unsigned long mode, void *cmd)
+{
+ efi_reboot(reboot_mode, cmd);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block arm64_efi_restart_nb = {
+ .notifier_call = arm64_efi_restart,
+ .priority = INT_MAX,
+};
+
+static int __init arm64_register_efi_restart(void)
+{
+ int ret = 0;
+
+ if (efi_enabled(EFI_RUNTIME_SERVICES)) {
+ ret = register_restart_handler(&arm64_efi_restart_nb);
+ if (ret)
+ pr_err("%s: cannot register restart handler, %d\n",
+ __func__, ret);
+ }
+ return ret;
+}
+late_initcall(arm64_register_efi_restart);
diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S
index 38e704e..08cafc5 100644
--- a/arch/arm64/kernel/entry-ftrace.S
+++ b/arch/arm64/kernel/entry-ftrace.S
@@ -98,8 +98,8 @@
ENTRY(_mcount)
mcount_enter
- ldr x0, =ftrace_trace_function
- ldr x2, [x0]
+ adrp x0, ftrace_trace_function
+ ldr x2, [x0, #:lo12:ftrace_trace_function]
adr x0, ftrace_stub
cmp x0, x2 // if (ftrace_trace_function
b.eq skip_ftrace_call // != ftrace_stub) {
@@ -115,14 +115,15 @@ skip_ftrace_call: // return;
mcount_exit // return;
// }
skip_ftrace_call:
- ldr x1, =ftrace_graph_return
- ldr x2, [x1] // if ((ftrace_graph_return
- cmp x0, x2 // != ftrace_stub)
- b.ne ftrace_graph_caller
-
- ldr x1, =ftrace_graph_entry // || (ftrace_graph_entry
- ldr x2, [x1] // != ftrace_graph_entry_stub))
- ldr x0, =ftrace_graph_entry_stub
+ adrp x1, ftrace_graph_return
+ ldr x2, [x1, #:lo12:ftrace_graph_return]
+ cmp x0, x2 // if ((ftrace_graph_return
+ b.ne ftrace_graph_caller // != ftrace_stub)
+
+ adrp x1, ftrace_graph_entry // || (ftrace_graph_entry
+ adrp x0, ftrace_graph_entry_stub // != ftrace_graph_entry_stub))
+ ldr x2, [x1, #:lo12:ftrace_graph_entry]
+ add x0, x0, #:lo12:ftrace_graph_entry_stub
cmp x0, x2
b.ne ftrace_graph_caller // ftrace_graph_caller();
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 0a6e4f9..5a76e3a 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -132,6 +132,8 @@ efi_head:
#endif
#ifdef CONFIG_EFI
+ .globl stext_offset
+ .set stext_offset, stext - efi_head
.align 3
pe_header:
.ascii "PE"
@@ -155,12 +157,12 @@ optional_header:
.long 0 // SizeOfInitializedData
.long 0 // SizeOfUninitializedData
.long efi_stub_entry - efi_head // AddressOfEntryPoint
- .long stext - efi_head // BaseOfCode
+ .long stext_offset // BaseOfCode
extra_header_fields:
.quad 0 // ImageBase
- .long 0x20 // SectionAlignment
- .long 0x8 // FileAlignment
+ .long 0x1000 // SectionAlignment
+ .long PECOFF_FILE_ALIGNMENT // FileAlignment
.short 0 // MajorOperatingSystemVersion
.short 0 // MinorOperatingSystemVersion
.short 0 // MajorImageVersion
@@ -172,7 +174,7 @@ extra_header_fields:
.long _end - efi_head // SizeOfImage
// Everything before the kernel image is considered part of the header
- .long stext - efi_head // SizeOfHeaders
+ .long stext_offset // SizeOfHeaders
.long 0 // CheckSum
.short 0xa // Subsystem (EFI application)
.short 0 // DllCharacteristics
@@ -217,16 +219,24 @@ section_table:
.byte 0
.byte 0 // end of 0 padding of section name
.long _end - stext // VirtualSize
- .long stext - efi_head // VirtualAddress
+ .long stext_offset // VirtualAddress
.long _edata - stext // SizeOfRawData
- .long stext - efi_head // PointerToRawData
+ .long stext_offset // PointerToRawData
.long 0 // PointerToRelocations (0 for executables)
.long 0 // PointerToLineNumbers (0 for executables)
.short 0 // NumberOfRelocations (0 for executables)
.short 0 // NumberOfLineNumbers (0 for executables)
.long 0xe0500020 // Characteristics (section flags)
- .align 5
+
+ /*
+ * EFI will load stext onwards at the 4k section alignment
+ * described in the PE/COFF header. To ensure that instruction
+ * sequences using an adrp and a :lo12: immediate will function
+ * correctly at this alignment, we must ensure that stext is
+ * placed at a 4k boundary in the Image to begin with.
+ */
+ .align 12
#endif
ENTRY(stext)
diff --git a/arch/arm64/kernel/io.c b/arch/arm64/kernel/io.c
index 7d37ead..354be2a 100644
--- a/arch/arm64/kernel/io.c
+++ b/arch/arm64/kernel/io.c
@@ -25,12 +25,26 @@
*/
void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
{
- unsigned char *t = to;
- while (count) {
+ while (count && (!IS_ALIGNED((unsigned long)from, 8) ||
+ !IS_ALIGNED((unsigned long)to, 8))) {
+ *(u8 *)to = __raw_readb(from);
+ from++;
+ to++;
count--;
- *t = readb(from);
- t++;
+ }
+
+ while (count >= 8) {
+ *(u64 *)to = __raw_readq(from);
+ from += 8;
+ to += 8;
+ count -= 8;
+ }
+
+ while (count) {
+ *(u8 *)to = __raw_readb(from);
from++;
+ to++;
+ count--;
}
}
EXPORT_SYMBOL(__memcpy_fromio);
@@ -40,12 +54,26 @@ EXPORT_SYMBOL(__memcpy_fromio);
*/
void __memcpy_toio(volatile void __iomem *to, const void *from, size_t count)
{
- const unsigned char *f = from;
- while (count) {
+ while (count && (!IS_ALIGNED((unsigned long)to, 8) ||
+ !IS_ALIGNED((unsigned long)from, 8))) {
+ __raw_writeb(*(volatile u8 *)from, to);
+ from++;
+ to++;
count--;
- writeb(*f, to);
- f++;
+ }
+
+ while (count >= 8) {
+ __raw_writeq(*(volatile u64 *)from, to);
+ from += 8;
+ to += 8;
+ count -= 8;
+ }
+
+ while (count) {
+ __raw_writeb(*(volatile u8 *)from, to);
+ from++;
to++;
+ count--;
}
}
EXPORT_SYMBOL(__memcpy_toio);
@@ -55,10 +83,28 @@ EXPORT_SYMBOL(__memcpy_toio);
*/
void __memset_io(volatile void __iomem *dst, int c, size_t count)
{
- while (count) {
+ u64 qc = (u8)c;
+
+ qc |= qc << 8;
+ qc |= qc << 16;
+ qc |= qc << 32;
+
+ while (count && !IS_ALIGNED((unsigned long)dst, 8)) {
+ __raw_writeb(c, dst);
+ dst++;
count--;
- writeb(c, dst);
+ }
+
+ while (count >= 8) {
+ __raw_writeq(qc, dst);
+ dst += 8;
+ count -= 8;
+ }
+
+ while (count) {
+ __raw_writeb(c, dst);
dst++;
+ count--;
}
}
EXPORT_SYMBOL(__memset_io);
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index ce5836c..978cd21 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -17,6 +17,8 @@
#include <linux/of_pci.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/pci-acpi.h>
#include <asm/pci-bridge.h>
@@ -37,34 +39,99 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
return res->start;
}
+int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ struct pci_sysdata *sd;
+
+ if (!acpi_disabled) {
+ sd = bridge->bus->sysdata;
+ ACPI_COMPANION_SET(&bridge->dev, sd->companion);
+ }
+ return 0;
+}
+
/*
* Try to assign the IRQ number from DT when adding a new device
*/
int pcibios_add_device(struct pci_dev *dev)
{
- dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
+ if (acpi_disabled)
+ dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
return 0;
}
+void pcibios_add_bus(struct pci_bus *bus)
+{
+ if (!acpi_disabled)
+ acpi_pci_add_bus(bus);
+}
-#ifdef CONFIG_PCI_DOMAINS_GENERIC
-static bool dt_domain_found = false;
+void pcibios_remove_bus(struct pci_bus *bus)
+{
+ if (!acpi_disabled)
+ acpi_pci_remove_bus(bus);
+}
+
+int pcibios_enable_irq(struct pci_dev *dev)
+{
+ if (!acpi_disabled && !pci_dev_msi_enabled(dev))
+ acpi_pci_irq_enable(dev);
+ return 0;
+}
+
+int pcibios_disable_irq(struct pci_dev *dev)
+{
+ if (!acpi_disabled && !pci_dev_msi_enabled(dev))
+ acpi_pci_irq_disable(dev);
+ return 0;
+}
+int pcibios_enable_device(struct pci_dev *dev, int bars)
+{
+ int err;
+
+ err = pci_enable_resources(dev, bars);
+ if (err < 0)
+ return err;
+
+ if (!pci_dev_msi_enabled(dev))
+ return pcibios_enable_irq(dev);
+ return 0;
+}
+
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
{
- int domain = of_get_pci_domain_nr(parent->of_node);
-
- if (domain >= 0) {
- dt_domain_found = true;
- } else if (dt_domain_found == true) {
- dev_err(parent, "Node %s is missing \"linux,pci-domain\" property in DT\n",
- parent->of_node->full_name);
- return;
- } else {
- domain = pci_get_new_domain_nr();
- }
+ int domain = -1;
- bus->domain_nr = domain;
+ if (acpi_disabled)
+ domain = of_get_pci_domain_nr(parent->of_node);
+ else {
+ struct pci_sysdata *sd = bus->sysdata;
+
+ domain = sd->domain;
+ }
+ if (domain >= 0)
+ bus->domain_nr = domain;
}
#endif
+
+static int __init pcibios_assign_resources(void)
+{
+ struct pci_bus *root_bus;
+
+ if (acpi_disabled)
+ return 0;
+
+ list_for_each_entry(root_bus, &pci_root_buses, node) {
+ pcibios_resource_survey_bus(root_bus);
+ pci_assign_unassigned_root_bus_resources(root_bus);
+ }
+ return 0;
+}
+/*
+ * fs_initcall comes after subsys_initcall, so we know acpi scan
+ * has run.
+ */
+fs_initcall(pcibios_assign_resources);
diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
index 663da77..2d0deda 100644
--- a/arch/arm64/kernel/psci.c
+++ b/arch/arm64/kernel/psci.c
@@ -15,6 +15,7 @@
#define pr_fmt(fmt) "psci: " fmt
+#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/smp.h>
@@ -24,6 +25,7 @@
#include <linux/slab.h>
#include <uapi/linux/psci.h>
+#include <asm/acpi.h>
#include <asm/compiler.h>
#include <asm/cpu_ops.h>
#include <asm/errno.h>
@@ -304,6 +306,33 @@ static void psci_sys_poweroff(void)
invoke_psci_fn(PSCI_0_2_FN_SYSTEM_OFF, 0, 0, 0);
}
+static void psci_0_2_set_functions(void)
+{
+ pr_info("Using standard PSCI v0.2 function IDs\n");
+ psci_function_id[PSCI_FN_CPU_SUSPEND] = PSCI_0_2_FN64_CPU_SUSPEND;
+ psci_ops.cpu_suspend = psci_cpu_suspend;
+
+ psci_function_id[PSCI_FN_CPU_OFF] = PSCI_0_2_FN_CPU_OFF;
+ psci_ops.cpu_off = psci_cpu_off;
+
+ psci_function_id[PSCI_FN_CPU_ON] = PSCI_0_2_FN64_CPU_ON;
+ psci_ops.cpu_on = psci_cpu_on;
+
+ psci_function_id[PSCI_FN_MIGRATE] = PSCI_0_2_FN64_MIGRATE;
+ psci_ops.migrate = psci_migrate;
+
+ psci_function_id[PSCI_FN_AFFINITY_INFO] = PSCI_0_2_FN64_AFFINITY_INFO;
+ psci_ops.affinity_info = psci_affinity_info;
+
+ psci_function_id[PSCI_FN_MIGRATE_INFO_TYPE] =
+ PSCI_0_2_FN_MIGRATE_INFO_TYPE;
+ psci_ops.migrate_info_type = psci_migrate_info_type;
+
+ arm_pm_restart = psci_sys_reset;
+
+ pm_power_off = psci_sys_poweroff;
+}
+
/*
* PSCI Function IDs for v0.2+ are well defined so use
* standard values.
@@ -337,29 +366,7 @@ static int __init psci_0_2_init(struct device_node *np)
}
}
- pr_info("Using standard PSCI v0.2 function IDs\n");
- psci_function_id[PSCI_FN_CPU_SUSPEND] = PSCI_0_2_FN64_CPU_SUSPEND;
- psci_ops.cpu_suspend = psci_cpu_suspend;
-
- psci_function_id[PSCI_FN_CPU_OFF] = PSCI_0_2_FN_CPU_OFF;
- psci_ops.cpu_off = psci_cpu_off;
-
- psci_function_id[PSCI_FN_CPU_ON] = PSCI_0_2_FN64_CPU_ON;
- psci_ops.cpu_on = psci_cpu_on;
-
- psci_function_id[PSCI_FN_MIGRATE] = PSCI_0_2_FN64_MIGRATE;
- psci_ops.migrate = psci_migrate;
-
- psci_function_id[PSCI_FN_AFFINITY_INFO] = PSCI_0_2_FN64_AFFINITY_INFO;
- psci_ops.affinity_info = psci_affinity_info;
-
- psci_function_id[PSCI_FN_MIGRATE_INFO_TYPE] =
- PSCI_0_2_FN_MIGRATE_INFO_TYPE;
- psci_ops.migrate_info_type = psci_migrate_info_type;
-
- arm_pm_restart = psci_sys_reset;
-
- pm_power_off = psci_sys_poweroff;
+ psci_0_2_set_functions();
out_put_node:
of_node_put(np);
@@ -412,7 +419,7 @@ static const struct of_device_id psci_of_match[] __initconst = {
{},
};
-int __init psci_init(void)
+int __init psci_dt_init(void)
{
struct device_node *np;
const struct of_device_id *matched_np;
@@ -427,6 +434,29 @@ int __init psci_init(void)
return init_fn(np);
}
+/*
+ * We use PSCI 0.2+ when ACPI is deployed on ARM64 and it's
+ * explicitly clarified in SBBR
+ */
+int __init psci_acpi_init(void)
+{
+ if (!acpi_psci_present()) {
+ pr_info("is not implemented in ACPI.\n");
+ return -EOPNOTSUPP;
+ }
+
+ pr_info("probing for conduit method from ACPI.\n");
+
+ if (acpi_psci_use_hvc())
+ invoke_psci_fn = __invoke_psci_fn_hvc;
+ else
+ invoke_psci_fn = __invoke_psci_fn_smc;
+
+ psci_0_2_set_functions();
+
+ return 0;
+}
+
#ifdef CONFIG_SMP
static int __init cpu_psci_cpu_init(struct device_node *dn, unsigned int cpu)
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 2437196..4c7029d 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -43,6 +43,7 @@
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <linux/efi.h>
+#include <linux/acpi.h>
#include <asm/fixmap.h>
#include <asm/cpu.h>
@@ -59,6 +60,10 @@
#include <asm/memblock.h>
#include <asm/psci.h>
#include <asm/efi.h>
+#include <asm/acpi.h>
+
+int acadia_kvm_acpi=0;
+EXPORT_SYMBOL(acadia_kvm_acpi);
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
@@ -116,12 +121,16 @@ void __init early_print(const char *str, ...)
void __init smp_setup_processor_id(void)
{
+ u64 mpidr = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
+ cpu_logical_map(0) = mpidr;
+
/*
* clear __my_cpu_offset on boot CPU to avoid hang caused by
* using percpu variable early, for example, lockdep will
* access percpu variable inside lock_release
*/
set_my_cpu_offset(0);
+ pr_info("Booting Linux on physical CPU 0x%lx\n", (unsigned long)mpidr);
}
bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
@@ -312,6 +321,7 @@ static void __init setup_machine_fdt(phys_addr_t dt_phys)
}
machine_name = of_flat_dt_get_machine_name();
+ dump_stack_set_arch_desc("%s (DT)", machine_name);
}
/*
@@ -378,6 +388,8 @@ void __init setup_arch(char **cmdline_p)
early_ioremap_init();
+ disable_acpi();
+
parse_early_param();
/*
@@ -389,19 +401,27 @@ void __init setup_arch(char **cmdline_p)
efi_init();
arm64_memblock_init();
+ /* Parse the ACPI tables for possible boot-time configuration */
+ acpi_boot_table_init();
+
paging_init();
request_standard_resources();
efi_idmap_init();
- unflatten_device_tree();
-
- psci_init();
+ if (acpi_disabled) {
+ unflatten_device_tree();
+ psci_dt_init();
+ cpu_read_bootcpu_ops();
+#ifdef CONFIG_SMP
+ of_smp_init_cpus();
+#endif
+ } else {
+ psci_acpi_init();
+ acpi_smp_init_cpus();
+ }
- cpu_logical_map(0) = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
- cpu_read_bootcpu_ops();
#ifdef CONFIG_SMP
- smp_init_cpus();
smp_build_mpidr_hash();
#endif
@@ -414,6 +434,19 @@ void __init setup_arch(char **cmdline_p)
#endif
}
+static int __init parse_kvm_acpi(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ if (strcmp(arg, "on") == 0) {
+ acadia_kvm_acpi = 1;
+ }
+
+ return 0;
+}
+early_param("kvmacpi", parse_kvm_acpi);
+
static int __init arm64_device_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
@@ -506,3 +539,25 @@ const struct seq_operations cpuinfo_op = {
.stop = c_stop,
.show = c_show
};
+
+/*
+ * Temporary hack to avoid need for console= on command line
+ */
+static int __init arm64_console_setup(void)
+{
+ /* Allow cmdline to override our assumed preferences */
+ if (console_set_on_cmdline)
+ return 0;
+
+ if (IS_ENABLED(CONFIG_SBSAUART_TTY))
+ add_preferred_console("ttySBSA", 0, "115200");
+
+ if (IS_ENABLED(CONFIG_SERIAL_AMBA_PL011))
+ add_preferred_console("ttyAMA", 0, "115200");
+
+ if (IS_ENABLED(CONFIG_SERIAL_8250))
+ add_preferred_console("ttyS", 0, "115200");
+
+ return 0;
+}
+early_initcall(arm64_console_setup);
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index b06d1d9..2988829 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -321,7 +321,7 @@ void __init smp_prepare_boot_cpu(void)
* cpu logical map array containing MPIDR values related to logical
* cpus. Assumes that cpu_logical_map(0) has already been initialized.
*/
-void __init smp_init_cpus(void)
+void __init of_smp_init_cpus(void)
{
struct device_node *dn = NULL;
unsigned int i, cpu = 1;
diff --git a/arch/arm64/kernel/smp_parking_protocol.c b/arch/arm64/kernel/smp_parking_protocol.c
new file mode 100644
index 0000000..e1153ce
--- /dev/null
+++ b/arch/arm64/kernel/smp_parking_protocol.c
@@ -0,0 +1,110 @@
+/*
+ * Parking Protocol SMP initialisation
+ *
+ * Based largely on spin-table method.
+ *
+ * Copyright (C) 2013 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/smp.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+
+#include <asm/cacheflush.h>
+#include <asm/cpu_ops.h>
+#include <asm/cputype.h>
+#include <asm/smp_plat.h>
+
+static phys_addr_t cpu_mailbox_addr[NR_CPUS];
+
+static void (*__smp_boot_wakeup)(int cpu);
+
+void set_smp_boot_wakeup_call(void (*fn)(int cpu))
+{
+ __smp_boot_wakeup = fn;
+}
+
+static int smp_parking_protocol_cpu_init(struct device_node *dn,
+ unsigned int cpu)
+{
+ /*
+ * Determine the mailbox address.
+ */
+ if (!acpi_get_cpu_parked_address(cpu, &cpu_mailbox_addr[cpu])) {
+ pr_info("%s: ACPI parked addr=%llx\n",
+ __func__, cpu_mailbox_addr[cpu]);
+ return 0;
+ }
+
+ pr_err("CPU %d: missing or invalid parking protocol mailbox\n", cpu);
+
+ return -1;
+}
+
+static int smp_parking_protocol_cpu_prepare(unsigned int cpu)
+{
+ return 0;
+}
+
+struct parking_protocol_mailbox {
+ __le32 cpu_id;
+ __le32 reserved;
+ __le64 entry_point;
+};
+
+static int smp_parking_protocol_cpu_boot(unsigned int cpu)
+{
+ struct parking_protocol_mailbox __iomem *mailbox;
+
+ if (!cpu_mailbox_addr[cpu] || !__smp_boot_wakeup)
+ return -ENODEV;
+
+ /*
+ * The mailbox may or may not be inside the linear mapping.
+ * As ioremap_cache will either give us a new mapping or reuse the
+ * existing linear mapping, we can use it to cover both cases. In
+ * either case the memory will be MT_NORMAL.
+ */
+ mailbox = ioremap_cache(cpu_mailbox_addr[cpu], sizeof(*mailbox));
+ if (!mailbox)
+ return -ENOMEM;
+
+ /*
+ * We write the entry point and cpu id as LE regardless of the
+ * native endianess of the kernel. Therefore, any boot-loaders
+ * that read this address need to convert this address to the
+ * Boot-Loader's endianess before jumping.
+ */
+ writeq(__pa(secondary_entry), &mailbox->entry_point);
+ writel(cpu, &mailbox->cpu_id);
+ __flush_dcache_area(mailbox, sizeof(*mailbox));
+ __smp_boot_wakeup(cpu);
+
+ /* temp hack for broken firmware */
+ sev();
+
+ iounmap(mailbox);
+
+ return 0;
+}
+
+const struct cpu_operations smp_parking_protocol_ops = {
+ .name = "parking-protocol",
+ .cpu_init = smp_parking_protocol_cpu_init,
+ .cpu_prepare = smp_parking_protocol_cpu_prepare,
+ .cpu_boot = smp_parking_protocol_cpu_boot,
+};
diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c
index 1a7125c..42f9195 100644
--- a/arch/arm64/kernel/time.c
+++ b/arch/arm64/kernel/time.c
@@ -35,6 +35,7 @@
#include <linux/delay.h>
#include <linux/clocksource.h>
#include <linux/clk-provider.h>
+#include <linux/acpi.h>
#include <clocksource/arm_arch_timer.h>
@@ -72,6 +73,12 @@ void __init time_init(void)
tick_setup_hrtimer_broadcast();
+ /*
+ * Since ACPI or FDT will only one be available in the system,
+ * we can use acpi_generic_timer_init() here safely
+ */
+ acpi_generic_timer_init();
+
arch_timer_rate = arch_timer_get_rate();
if (!arch_timer_rate)
panic("Unable to initialise architected timer.\n");
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index edf8715..4596f46 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -32,6 +32,22 @@ jiffies = jiffies_64;
*(.hyp.text) \
VMLINUX_SYMBOL(__hyp_text_end) = .;
+/*
+ * The size of the PE/COFF section that covers the kernel image, which
+ * runs from stext to _edata, must be a round multiple of the PE/COFF
+ * FileAlignment, which we set to its minimum value of 0x200. 'stext'
+ * itself is 4 KB aligned, so padding out _edata to a 0x200 aligned
+ * boundary should be sufficient.
+ */
+PECOFF_FILE_ALIGNMENT = 0x200;
+
+#ifdef CONFIG_EFI
+#define PECOFF_EDATA_PADDING \
+ .pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); }
+#else
+#define PECOFF_EDATA_PADDING
+#endif
+
SECTIONS
{
/*
@@ -103,6 +119,7 @@ SECTIONS
_data = .;
_sdata = .;
RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
+ PECOFF_EDATA_PADDING
_edata = .;
BSS_SECTION(0, 0, 0)
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
index b72aa9f..fbe909f 100644
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S
@@ -761,10 +761,10 @@
.macro activate_traps
ldr x2, [x0, #VCPU_HCR_EL2]
msr hcr_el2, x2
- ldr x2, =(CPTR_EL2_TTA)
+ mov x2, #CPTR_EL2_TTA
msr cptr_el2, x2
- ldr x2, =(1 << 15) // Trap CP15 Cr=15
+ mov x2, #(1 << 15) // Trap CP15 Cr=15
msr hstr_el2, x2
mrs x2, mdcr_el2
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index d920942..705a9ce 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -23,8 +23,14 @@
#include <linux/genalloc.h>
#include <linux/dma-mapping.h>
#include <linux/dma-contiguous.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
#include <linux/vmalloc.h>
#include <linux/swiotlb.h>
+#include <linux/amba/bus.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
#include <asm/cacheflush.h>
@@ -423,10 +429,107 @@ out:
return -ENOMEM;
}
+#ifdef CONFIG_PCI
+static void arm64_of_set_dma_ops(void *_dev)
+{
+ struct device *dev = _dev;
+
+ /*
+ * PCI devices won't have an ACPI handle but the bridge will.
+ * Search up the device chain until we find an of_node
+ * to check.
+ */
+ while (dev) {
+ if (dev->of_node) {
+ if (of_dma_is_coherent(dev->of_node))
+ set_dma_ops(_dev, &coherent_swiotlb_dma_ops);
+ break;
+ }
+ dev = dev->parent;
+ }
+}
+#else
+static inline arm64_of_set_dma_ops(void *_dev) {}
+#endif
+
+
+#ifdef CONFIG_ACPI
+static void arm64_acpi_set_dma_ops(void *_dev)
+{
+ struct device *dev = _dev;
+
+ /*
+ * Kernel defaults to noncoherent ops but ACPI 5.1 spec says arm64
+ * defaults to coherent. Set coherent ops if _CCA not found or _CCA
+ * found and non-zero.
+ *
+ * PCI devices won't have an of_node but the bridge will.
+ * Search up the device chain until we find an ACPI handle
+ * to check.
+ */
+ while (dev) {
+ if (ACPI_HANDLE(dev)) {
+ acpi_status status;
+ int coherent;
+ status = acpi_check_coherency(ACPI_HANDLE(dev),
+ &coherent);
+ if (ACPI_FAILURE(status) || coherent)
+ set_dma_ops(_dev, &coherent_swiotlb_dma_ops);
+ break;
+ }
+ dev = dev->parent;
+ }
+}
+#else
+static inline arm64_acpi_set_dma_ops(void *_dev) {}
+#endif
+
+static int dma_bus_notifier(struct notifier_block *nb,
+ unsigned long event, void *_dev)
+{
+ if (event != BUS_NOTIFY_ADD_DEVICE)
+ return NOTIFY_DONE;
+
+ if (acpi_disabled)
+ arm64_of_set_dma_ops(_dev);
+ else
+ arm64_acpi_set_dma_ops(_dev);
+
+ return NOTIFY_OK;
+}
+
+#ifdef CONFIG_ACPI
+static struct notifier_block platform_bus_nb = {
+ .notifier_call = dma_bus_notifier,
+};
+
+static struct notifier_block amba_bus_nb = {
+ .notifier_call = dma_bus_notifier,
+};
+#endif
+
+#ifdef CONFIG_PCI
+static struct notifier_block pci_bus_nb = {
+ .notifier_call = dma_bus_notifier,
+};
+#endif
+
static int __init swiotlb_late_init(void)
{
size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT);
+ /*
+ * These must be registered before of_platform_populate().
+ */
+#ifdef CONFIG_ACPI
+ bus_register_notifier(&platform_bus_type, &platform_bus_nb);
+ bus_register_notifier(&amba_bustype, &amba_bus_nb);
+#endif
+
+#ifdef CONFIG_PCI
+ bus_register_notifier(&pci_bus_type, &pci_bus_nb);
+#endif
+
dma_ops = &noncoherent_swiotlb_dma_ops;
return swiotlb_late_init_with_default_size(swiotlb_size);
diff --git a/arch/arm64/pci/Makefile b/arch/arm64/pci/Makefile
new file mode 100644
index 0000000..7038b51
--- /dev/null
+++ b/arch/arm64/pci/Makefile
@@ -0,0 +1,2 @@
+obj-y += pci.o
+obj-$(CONFIG_ACPI) += mmconfig.o
diff --git a/arch/arm64/pci/mmconfig.c b/arch/arm64/pci/mmconfig.c
new file mode 100644
index 0000000..e83e0d5
--- /dev/null
+++ b/arch/arm64/pci/mmconfig.c
@@ -0,0 +1,292 @@
+/*
+ * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
+ *
+ * Borrowed heavily from x86
+ */
+
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/bitmap.h>
+#include <linux/dmi.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/rculist.h>
+#include <linux/rcupdate.h>
+
+#define PREFIX "PCI: "
+
+/* Indicate if the mmcfg resources have been placed into the resource table. */
+static bool pci_mmcfg_running_state;
+static bool pci_mmcfg_arch_init_failed;
+static DEFINE_MUTEX(pci_mmcfg_lock);
+
+LIST_HEAD(pci_mmcfg_list);
+
+struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus)
+{
+ struct pci_mmcfg_region *cfg;
+
+ list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list)
+ if (cfg->segment == segment &&
+ cfg->start_bus <= bus && bus <= cfg->end_bus)
+ return cfg;
+
+ return NULL;
+}
+
+static void __iomem *mcfg_ioremap(struct pci_mmcfg_region *cfg)
+{
+ void __iomem *addr;
+ u64 start, size;
+ int num_buses;
+
+ start = cfg->address + PCI_MMCFG_BUS_OFFSET(cfg->start_bus);
+ num_buses = cfg->end_bus - cfg->start_bus + 1;
+ size = PCI_MMCFG_BUS_OFFSET(num_buses);
+ addr = ioremap_nocache(start, size);
+ if (addr)
+ addr -= PCI_MMCFG_BUS_OFFSET(cfg->start_bus);
+ return addr;
+}
+
+void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg)
+{
+ if (cfg && cfg->virt) {
+ iounmap(cfg->virt + PCI_MMCFG_BUS_OFFSET(cfg->start_bus));
+ cfg->virt = NULL;
+ }
+}
+
+void __init pci_mmcfg_arch_free(void)
+{
+ struct pci_mmcfg_region *cfg;
+
+ list_for_each_entry(cfg, &pci_mmcfg_list, list)
+ pci_mmcfg_arch_unmap(cfg);
+}
+
+int pci_mmcfg_arch_map(struct pci_mmcfg_region *cfg)
+{
+ cfg->virt = mcfg_ioremap(cfg);
+ if (!cfg->virt) {
+ pr_err(PREFIX "can't map MMCONFIG at %pR\n", &cfg->res);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void __init pci_mmconfig_remove(struct pci_mmcfg_region *cfg)
+{
+ if (cfg->res.parent)
+ release_resource(&cfg->res);
+ list_del(&cfg->list);
+ kfree(cfg);
+}
+
+static void __init free_all_mmcfg(void)
+{
+ struct pci_mmcfg_region *cfg, *tmp;
+
+ pci_mmcfg_arch_free();
+ list_for_each_entry_safe(cfg, tmp, &pci_mmcfg_list, list)
+ pci_mmconfig_remove(cfg);
+}
+
+static void list_add_sorted(struct pci_mmcfg_region *new)
+{
+ struct pci_mmcfg_region *cfg;
+
+ /* keep list sorted by segment and starting bus number */
+ list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list) {
+ if (cfg->segment > new->segment ||
+ (cfg->segment == new->segment &&
+ cfg->start_bus >= new->start_bus)) {
+ list_add_tail_rcu(&new->list, &cfg->list);
+ return;
+ }
+ }
+ list_add_tail_rcu(&new->list, &pci_mmcfg_list);
+}
+
+static struct pci_mmcfg_region *pci_mmconfig_alloc(int segment, int start,
+ int end, u64 addr)
+{
+ struct pci_mmcfg_region *new;
+ struct resource *res;
+
+ if (addr == 0)
+ return NULL;
+
+ new = kzalloc(sizeof(*new), GFP_KERNEL);
+ if (!new)
+ return NULL;
+
+ new->address = addr;
+ new->segment = segment;
+ new->start_bus = start;
+ new->end_bus = end;
+
+ res = &new->res;
+ res->start = addr + PCI_MMCFG_BUS_OFFSET(start);
+ res->end = addr + PCI_MMCFG_BUS_OFFSET(end + 1) - 1;
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ snprintf(new->name, PCI_MMCFG_RESOURCE_NAME_LEN,
+ "PCI MMCONFIG %04x [bus %02x-%02x]", segment, start, end);
+ res->name = new->name;
+
+ return new;
+}
+
+static struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start,
+ int end, u64 addr)
+{
+ struct pci_mmcfg_region *new;
+
+ new = pci_mmconfig_alloc(segment, start, end, addr);
+ if (new) {
+ mutex_lock(&pci_mmcfg_lock);
+ list_add_sorted(new);
+ mutex_unlock(&pci_mmcfg_lock);
+
+ pr_info(PREFIX
+ "MMCONFIG for domain %04x [bus %02x-%02x] at %pR "
+ "(base %#lx)\n",
+ segment, start, end, &new->res, (unsigned long)addr);
+ }
+
+ return new;
+}
+
+extern struct acpi_mcfg_fixup __start_acpi_mcfg_fixups[];
+extern struct acpi_mcfg_fixup __end_acpi_mcfg_fixups[];
+
+static int __init pci_parse_mcfg(struct acpi_table_header *header)
+{
+ struct acpi_table_mcfg *mcfg;
+ struct acpi_mcfg_allocation *cfg_table, *cfg;
+ struct acpi_mcfg_fixup *fixup;
+ struct pci_mmcfg_region *new;
+ unsigned long i;
+ int entries;
+
+ if (!header)
+ return -EINVAL;
+
+ mcfg = (struct acpi_table_mcfg *)header;
+
+ /* how many config structures do we have */
+ free_all_mmcfg();
+ entries = 0;
+ i = header->length - sizeof(struct acpi_table_mcfg);
+ while (i >= sizeof(struct acpi_mcfg_allocation)) {
+ entries++;
+ i -= sizeof(struct acpi_mcfg_allocation);
+ }
+ if (entries == 0) {
+ pr_err(PREFIX "MMCONFIG has no entries\n");
+ return -ENODEV;
+ }
+
+ fixup = __start_acpi_mcfg_fixups;
+ while (fixup < __end_acpi_mcfg_fixups) {
+ if (!strncmp(fixup->oem_id, header->oem_id, 6) &&
+ !strncmp(fixup->oem_table_id, header->oem_table_id, 8))
+ break;
+ ++fixup;
+ }
+
+ cfg_table = (struct acpi_mcfg_allocation *) &mcfg[1];
+ for (i = 0; i < entries; i++) {
+ cfg = &cfg_table[i];
+
+ new = pci_mmconfig_add(cfg->pci_segment, cfg->start_bus_number,
+ cfg->end_bus_number, cfg->address);
+ if (!new) {
+ pr_warn(PREFIX "no memory for MCFG entries\n");
+ free_all_mmcfg();
+ return -ENOMEM;
+ }
+ if (fixup < __end_acpi_mcfg_fixups)
+ new->fixup = fixup->hook;
+ }
+
+ return 0;
+}
+
+int __init pci_mmcfg_arch_init(void)
+{
+ struct pci_mmcfg_region *cfg;
+
+ list_for_each_entry(cfg, &pci_mmcfg_list, list)
+ if (pci_mmcfg_arch_map(cfg)) {
+ pci_mmcfg_arch_free();
+ return 0;
+ }
+
+ return 1;
+}
+
+static void __init __pci_mmcfg_init(int early)
+{
+ if (list_empty(&pci_mmcfg_list)) {
+ pr_info("No MCFG table found!\n");
+ pci_mmcfg_arch_init_failed = true;
+ return;
+ }
+
+ if (!pci_mmcfg_arch_init()) {
+ pr_info("pci_mmcfg_arch_init failed!\n");
+ free_all_mmcfg();
+ pci_mmcfg_arch_init_failed = true;
+ }
+}
+
+void __init pci_mmcfg_early_init(void)
+{
+ acpi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
+
+ __pci_mmcfg_init(1);
+}
+
+static int __init pci_mmcfg_init(void)
+{
+ pci_mmcfg_early_init();
+ return 0;
+}
+arch_initcall(pci_mmcfg_init);
+
+void __init pci_mmcfg_late_init(void)
+{
+ /* MMCONFIG hasn't been enabled yet, try again */
+ if (pci_mmcfg_arch_init_failed) {
+ acpi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
+ __pci_mmcfg_init(0);
+ }
+}
+
+static int __init pci_mmcfg_late_insert_resources(void)
+{
+ struct pci_mmcfg_region *cfg;
+
+ pci_mmcfg_running_state = true;
+
+ /*
+ * Attempt to insert the mmcfg resources but not with the busy flag
+ * marked so it won't cause request errors when __request_region is
+ * called.
+ */
+ list_for_each_entry(cfg, &pci_mmcfg_list, list)
+ if (!cfg->res.parent)
+ insert_resource(&iomem_resource, &cfg->res);
+
+ return 0;
+}
+
+/*
+ * Perform MMCONFIG resource insertion after PCI initialization to allow for
+ * misprogrammed MCFG tables that state larger sizes but actually conflict
+ * with other system resources.
+ */
+late_initcall(pci_mmcfg_late_insert_resources);
diff --git a/arch/arm64/pci/pci.c b/arch/arm64/pci/pci.c
new file mode 100644
index 0000000..0166475
--- /dev/null
+++ b/arch/arm64/pci/pci.c
@@ -0,0 +1,461 @@
+#include <linux/acpi.h>
+#include <linux/of_address.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+
+struct pci_root_info {
+ struct acpi_device *bridge;
+ char name[16];
+ unsigned int res_num;
+ struct resource *res;
+ resource_size_t *res_offset;
+ struct pci_sysdata sd;
+ u16 segment;
+ u8 start_bus;
+ u8 end_bus;
+};
+
+static char __iomem *pci_dev_base(struct pci_mmcfg_region *cfg,
+ unsigned int bus, unsigned int devfn)
+{
+ return cfg->virt + (PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12));
+}
+
+static int __raw_pci_read(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ char __iomem *addr = pci_dev_base(cfg, bus, devfn) + (reg & ~3);
+ int shift = (reg & 3) * 8;
+ u32 v;
+
+ v = readl(addr) >> shift;
+ switch (len) {
+ case 1:
+ *value = v & 0xff;
+ break;
+ case 2:
+ *value = v & 0xffff;
+ break;
+ case 4:
+ *value = v;
+ break;
+ }
+ return 0;
+}
+
+static int __raw_pci_write(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ char __iomem *addr = pci_dev_base(cfg, bus, devfn) + (reg & ~3);
+ int mask = 0, shift = (reg & 3) * 8;
+ u32 v;
+
+ switch (len) {
+ case 1:
+ mask = 0xff << shift;
+ break;
+ case 2:
+ mask = 0xffff << shift;
+ break;
+ }
+
+ if (mask) {
+ v = readl(addr) & ~mask;
+ writel(v | (value << shift), addr);
+ } else
+ writel(value, addr);
+
+ return 0;
+}
+
+/*
+ * raw_pci_read/write - Platform-specific PCI config space access.
+ */
+int raw_pci_read(unsigned int domain, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *val)
+{
+ struct pci_mmcfg_region *cfg;
+ int ret;
+
+ if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095))) {
+err: *val = -1;
+ return -EINVAL;
+ }
+
+ rcu_read_lock();
+ cfg = pci_mmconfig_lookup(domain, bus);
+ if (!cfg || !cfg->virt) {
+ rcu_read_unlock();
+ goto err;
+ }
+
+ if (cfg->read)
+ ret = (*cfg->read)(cfg, bus, devfn, reg, len, val);
+ else
+ ret = __raw_pci_read(cfg, bus, devfn, reg, len, val);
+
+ rcu_read_unlock();
+
+ return ret;
+}
+
+int raw_pci_write(unsigned int domain, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 val)
+{
+ struct pci_mmcfg_region *cfg;
+ int ret;
+
+ if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095)))
+ return -EINVAL;
+
+ rcu_read_lock();
+ cfg = pci_mmconfig_lookup(domain, bus);
+ if (!cfg || !cfg->virt) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ if (cfg->write)
+ ret = (*cfg->write)(cfg, bus, devfn, reg, len, val);
+ else
+ ret = __raw_pci_write(cfg, bus, devfn, reg, len, val);
+
+ rcu_read_unlock();
+
+ return ret;
+}
+
+#ifdef CONFIG_ACPI
+static int pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *value)
+{
+ return raw_pci_read(pci_domain_nr(bus), bus->number,
+ devfn, where, size, value);
+}
+
+static int pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 value)
+{
+ return raw_pci_write(pci_domain_nr(bus), bus->number,
+ devfn, where, size, value);
+}
+
+struct pci_ops pci_root_ops = {
+ .read = pci_read,
+ .write = pci_write,
+};
+
+static acpi_status resource_to_addr(struct acpi_resource *resource,
+ struct acpi_resource_address64 *addr)
+{
+ acpi_status status;
+
+ memset(addr, 0, sizeof(*addr));
+ switch (resource->type) {
+ case ACPI_RESOURCE_TYPE_ADDRESS16:
+ case ACPI_RESOURCE_TYPE_ADDRESS32:
+ case ACPI_RESOURCE_TYPE_ADDRESS64:
+ status = acpi_resource_to_address64(resource, addr);
+ if (ACPI_SUCCESS(status) &&
+ (addr->resource_type == ACPI_MEMORY_RANGE ||
+ addr->resource_type == ACPI_IO_RANGE) &&
+ addr->address_length > 0) {
+ return AE_OK;
+ }
+ break;
+ }
+ return AE_ERROR;
+}
+
+static acpi_status count_resource(struct acpi_resource *acpi_res, void *data)
+{
+ struct pci_root_info *info = data;
+ struct acpi_resource_address64 addr;
+ acpi_status status;
+
+ status = resource_to_addr(acpi_res, &addr);
+ if (ACPI_SUCCESS(status))
+ info->res_num++;
+ return AE_OK;
+}
+
+static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data)
+{
+ struct pci_root_info *info = data;
+ struct resource *res;
+ struct acpi_resource_address64 addr;
+ acpi_status status;
+ unsigned long flags;
+ u64 start, end;
+
+ status = resource_to_addr(acpi_res, &addr);
+ if (!ACPI_SUCCESS(status))
+ return AE_OK;
+
+ if (addr.resource_type == ACPI_MEMORY_RANGE) {
+ flags = IORESOURCE_MEM;
+ if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
+ flags |= IORESOURCE_PREFETCH;
+ } else if (addr.resource_type == ACPI_IO_RANGE) {
+ flags = IORESOURCE_IO;
+ } else
+ return AE_OK;
+
+ start = addr.minimum + addr.translation_offset;
+ end = addr.maximum + addr.translation_offset;
+
+ res = &info->res[info->res_num];
+ res->name = info->name;
+ res->flags = flags;
+ res->start = start;
+ res->end = end;
+
+ if (flags & IORESOURCE_IO) {
+ unsigned long port;
+ int err;
+
+ err = pci_register_io_range(start, addr.address_length);
+ if (err)
+ return AE_OK;
+
+ port = pci_address_to_pio(start);
+ if (port == (unsigned long)-1) {
+ res->start = -1;
+ res->end = -1;
+ return AE_OK;
+ }
+
+ res->start = port;
+ res->end = res->start + addr.address_length - 1;
+
+ if (pci_remap_iospace(res, start) < 0)
+ return AE_OK;
+
+ info->res_offset[info->res_num] = 0;
+ } else
+ info->res_offset[info->res_num] = addr.translation_offset;
+
+ info->res_num++;
+
+ return AE_OK;
+}
+
+static void coalesce_windows(struct pci_root_info *info, unsigned long type)
+{
+ int i, j;
+ struct resource *res1, *res2;
+
+ for (i = 0; i < info->res_num; i++) {
+ res1 = &info->res[i];
+ if (!(res1->flags & type))
+ continue;
+
+ for (j = i + 1; j < info->res_num; j++) {
+ res2 = &info->res[j];
+ if (!(res2->flags & type))
+ continue;
+
+ /*
+ * I don't like throwing away windows because then
+ * our resources no longer match the ACPI _CRS, but
+ * the kernel resource tree doesn't allow overlaps.
+ */
+ if (resource_overlaps(res1, res2)) {
+ res2->start = min(res1->start, res2->start);
+ res2->end = max(res1->end, res2->end);
+ dev_info(&info->bridge->dev,
+ "host bridge window expanded to %pR; %pR ignored\n",
+ res2, res1);
+ res1->flags = 0;
+ }
+ }
+ }
+}
+
+static void add_resources(struct pci_root_info *info,
+ struct list_head *resources)
+{
+ int i;
+ struct resource *res, *root, *conflict;
+
+ coalesce_windows(info, IORESOURCE_MEM);
+ coalesce_windows(info, IORESOURCE_IO);
+
+ for (i = 0; i < info->res_num; i++) {
+ res = &info->res[i];
+
+ if (res->flags & IORESOURCE_MEM)
+ root = &iomem_resource;
+ else if (res->flags & IORESOURCE_IO)
+ root = &ioport_resource;
+ else
+ continue;
+
+ conflict = insert_resource_conflict(root, res);
+ if (conflict)
+ dev_info(&info->bridge->dev,
+ "ignoring host bridge window %pR (conflicts with %s %pR)\n",
+ res, conflict->name, conflict);
+ else
+ pci_add_resource_offset(resources, res,
+ info->res_offset[i]);
+ }
+}
+
+static void free_pci_root_info_res(struct pci_root_info *info)
+{
+ kfree(info->res);
+ info->res = NULL;
+ kfree(info->res_offset);
+ info->res_offset = NULL;
+ info->res_num = 0;
+}
+
+static void __release_pci_root_info(struct pci_root_info *info)
+{
+ int i;
+ struct resource *res;
+
+ for (i = 0; i < info->res_num; i++) {
+ res = &info->res[i];
+
+ if (!res->parent)
+ continue;
+
+ if (!(res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
+ continue;
+
+ release_resource(res);
+ }
+
+ free_pci_root_info_res(info);
+
+ kfree(info);
+}
+
+static void release_pci_root_info(struct pci_host_bridge *bridge)
+{
+ struct pci_root_info *info = bridge->release_data;
+
+ __release_pci_root_info(info);
+}
+
+static void probe_pci_root_info(struct pci_root_info *info,
+ struct acpi_device *device,
+ int busnum, int domain)
+{
+ size_t size;
+
+ sprintf(info->name, "PCI Bus %04x:%02x", domain, busnum);
+ info->bridge = device;
+
+ info->res_num = 0;
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
+ info);
+ if (!info->res_num)
+ return;
+
+ size = sizeof(*info->res) * info->res_num;
+ info->res = kzalloc_node(size, GFP_KERNEL, info->sd.node);
+ if (!info->res) {
+ info->res_num = 0;
+ return;
+ }
+
+ size = sizeof(*info->res_offset) * info->res_num;
+ info->res_num = 0;
+ info->res_offset = kzalloc_node(size, GFP_KERNEL, info->sd.node);
+ if (!info->res_offset) {
+ kfree(info->res);
+ info->res = NULL;
+ return;
+ }
+
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
+ info);
+}
+
+/* Root bridge scanning */
+struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
+{
+ struct acpi_device *device = root->device;
+ struct pci_mmcfg_region *mcfg;
+ struct pci_root_info *info;
+ int domain = root->segment;
+ int busnum = root->secondary.start;
+ LIST_HEAD(resources);
+ struct pci_bus *bus;
+ struct pci_sysdata *sd;
+ int node;
+
+ /* we need mmconfig */
+ mcfg = pci_mmconfig_lookup(domain, busnum);
+ if (!mcfg) {
+ pr_err("pci_bus %04x:%02x has no MCFG table\n",
+ domain, busnum);
+ return NULL;
+ }
+
+ /* temporary hack */
+ if (mcfg->fixup)
+ (*mcfg->fixup)(root, mcfg);
+
+ if (domain && !pci_domains_supported) {
+ pr_warn("PCI %04x:%02x: multiple domains not supported.\n",
+ domain, busnum);
+ return NULL;
+ }
+
+ node = NUMA_NO_NODE;
+
+ info = kzalloc_node(sizeof(*info), GFP_KERNEL, node);
+ if (!info) {
+ pr_warn("PCI %04x:%02x: ignored (out of memory)\n",
+ domain, busnum);
+ return NULL;
+ }
+ info->segment = domain;
+ info->start_bus = busnum;
+ info->end_bus = root->secondary.end;
+
+ sd = &info->sd;
+ sd->domain = domain;
+ sd->node = node;
+ sd->companion = device;
+
+ probe_pci_root_info(info, device, busnum, domain);
+
+ /* insert busn res at first */
+ pci_add_resource(&resources, &root->secondary);
+
+ /* then _CRS resources */
+ add_resources(info, &resources);
+
+ bus = pci_create_root_bus(NULL, busnum, &pci_root_ops, sd, &resources);
+ if (bus) {
+ pci_scan_child_bus(bus);
+ pci_set_host_bridge_release(to_pci_host_bridge(bus->bridge),
+ release_pci_root_info, info);
+ } else {
+ pci_free_resource_list(&resources);
+ __release_pci_root_info(info);
+ }
+
+ /* After the PCI-E bus has been walked and all devices discovered,
+ * configure any settings of the fabric that might be necessary.
+ */
+ if (bus) {
+ struct pci_bus *child;
+
+ list_for_each_entry(child, &bus->children, node)
+ pcie_bus_configure_settings(child);
+ }
+
+ if (bus && node != NUMA_NO_NODE)
+ dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
+
+ return bus;
+}
+
+#endif /* CONFIG_ACPI */
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index b23fe37..555e226 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -5,8 +5,7 @@
menuconfig ACPI
bool "ACPI (Advanced Configuration and Power Interface) Support"
depends on !IA64_HP_SIM
- depends on IA64 || X86
- depends on PCI
+ depends on ((IA64 || X86) && PCI) || ARM64
select PNP
default y
help
@@ -163,6 +162,7 @@ config ACPI_PROCESSOR
tristate "Processor"
select THERMAL
select CPU_IDLE
+ depends on X86 || IA64
default y
help
This driver installs ACPI as the idle handler for Linux and uses
@@ -263,7 +263,7 @@ config ACPI_DEBUG
config ACPI_PCI_SLOT
bool "PCI slot detection driver"
- depends on SYSFS
+ depends on SYSFS && PCI
default n
help
This driver creates entries in /sys/bus/pci/slots/ for all PCI
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c3b2fcb..5a21476 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -23,7 +23,11 @@ acpi-y += nvs.o
# Power management related files
acpi-y += wakeup.o
+ifeq ($(ARCH), arm64)
+acpi-y += sleep-arm.o
+else # X86, IA64
acpi-y += sleep.o
+endif
acpi-y += device_pm.o
acpi-$(CONFIG_ACPI_SLEEP) += proc.o
@@ -39,7 +43,7 @@ acpi-y += processor_core.o
acpi-$(CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC) += processor_pdc.o
acpi-y += ec.o
acpi-$(CONFIG_ACPI_DOCK) += dock.o
-acpi-y += pci_root.o pci_link.o pci_irq.o
+acpi-$(CONFIG_PCI) += pci_root.o pci_link.o pci_irq.o
acpi-y += acpi_lpss.o
acpi-y += acpi_platform.o
acpi-y += acpi_pnp.o
@@ -47,6 +51,7 @@ acpi-y += int340x_thermal.o
acpi-y += power.o
acpi-y += event.o
acpi-y += sysfs.o
+acpi-y += property.o
acpi-$(CONFIG_X86) += acpi_cmos_rtc.o
acpi-$(CONFIG_DEBUG_FS) += debugfs.o
acpi-$(CONFIG_ACPI_NUMA) += numa.o
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 8b67bd0..c412fdb 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -448,6 +448,9 @@ static int __init acpi_bus_init_irq(void)
case ACPI_IRQ_MODEL_IOSAPIC:
message = "IOSAPIC";
break;
+ case ACPI_IRQ_MODEL_GIC:
+ message = "GIC";
+ break;
case ACPI_IRQ_MODEL_PLATFORM:
message = "platform specific model";
break;
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 447f6d6..c5ff8ba 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -26,8 +26,13 @@
acpi_status acpi_os_initialize1(void);
int init_acpi_device_notify(void);
int acpi_scan_init(void);
+#ifdef CONFIG_PCI
void acpi_pci_root_init(void);
void acpi_pci_link_init(void);
+#else
+static inline void acpi_pci_root_init(void) {}
+static inline void acpi_pci_link_init(void) {}
+#endif
void acpi_processor_init(void);
void acpi_platform_init(void);
void acpi_pnp_init(void);
@@ -173,4 +178,10 @@ static inline void suspend_nvs_restore(void) {}
bool acpi_osi_is_win8(void);
#endif
+/*--------------------------------------------------------------------------
+ Device properties
+ -------------------------------------------------------------------------- */
+void acpi_init_properties(struct acpi_device *adev);
+void acpi_free_properties(struct acpi_device *adev);
+
#endif /* _ACPI_INTERNAL_H_ */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 9964f70..5c480d5 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -336,11 +336,11 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
return NULL;
}
-#ifndef CONFIG_IA64
-#define should_use_kmap(pfn) page_is_ram(pfn)
-#else
+#if defined(CONFIG_IA64) || defined(CONFIG_ARM) || defined(CONFIG_ARM64)
/* ioremap will take care of cache attributes */
#define should_use_kmap(pfn) 0
+#else
+#define should_use_kmap(pfn) page_is_ram(pfn)
#endif
static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ef58f46..5c84e0d 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -64,6 +64,38 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
return 0;
}
+/*
+ * On ARM platform, MPIDR value is the hardware ID as apic ID
+ * on Intel platforms
+ */
+static int map_gicc_mpidr(struct acpi_subtable_header *entry,
+ int device_declaration, u32 acpi_id, int *mpidr)
+{
+ struct acpi_madt_generic_interrupt *gicc =
+ container_of(entry, struct acpi_madt_generic_interrupt, header);
+
+ if (!(gicc->flags & ACPI_MADT_ENABLED))
+ return -ENODEV;
+
+ /* In the GIC interrupt model, logical processors are
+ * required to have a Processor Device object in the DSDT,
+ * so we should check device_declaration here
+ */
+ if (device_declaration && (gicc->uid == acpi_id)) {
+ /*
+ * Only bits [0:7] Aff0, bits [8:15] Aff1, bits [16:23] Aff2
+ * and bits [32:39] Aff3 are meaningful, so pack the Affx
+ * fields into a single 32 bit identifier to accommodate the
+ * acpi processor drivers.
+ */
+ *mpidr = ((gicc->arm_mpidr & 0xff00000000) >> 8)
+ | gicc->arm_mpidr;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
static int map_madt_entry(int type, u32 acpi_id)
{
unsigned long madt_end, entry;
@@ -99,6 +131,9 @@ static int map_madt_entry(int type, u32 acpi_id)
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
if (!map_lsapic_id(header, type, acpi_id, &apic_id))
break;
+ } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) {
+ if (!map_gicc_mpidr(header, type, acpi_id, &apic_id))
+ break;
}
entry += header->length;
}
@@ -131,6 +166,8 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
map_lsapic_id(header, type, acpi_id, &apic_id);
} else if (header->type == ACPI_MADT_TYPE_LOCAL_X2APIC) {
map_x2apic_id(header, type, acpi_id, &apic_id);
+ } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) {
+ map_gicc_mpidr(header, type, acpi_id, &apic_id);
}
exit:
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
new file mode 100644
index 0000000..0d08373
--- /dev/null
+++ b/drivers/acpi/property.c
@@ -0,0 +1,551 @@
+/*
+ * ACPI device specific properties support.
+ *
+ * Copyright (C) 2014, Intel Corporation
+ * All rights reserved.
+ *
+ * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
+ * Darren Hart <dvhart@linux.intel.com>
+ * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/export.h>
+
+#include "internal.h"
+
+/* ACPI _DSD device properties UUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301 */
+static const u8 prp_uuid[16] = {
+ 0x14, 0xd8, 0xff, 0xda, 0xba, 0x6e, 0x8c, 0x4d,
+ 0x8a, 0x91, 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01
+};
+
+static bool acpi_property_value_ok(const union acpi_object *value)
+{
+ int j;
+
+ /*
+ * The value must be an integer, a string, a reference, or a package
+ * whose every element must be an integer, a string, or a reference.
+ */
+ switch (value->type) {
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_STRING:
+ case ACPI_TYPE_LOCAL_REFERENCE:
+ return true;
+
+ case ACPI_TYPE_PACKAGE:
+ for (j = 0; j < value->package.count; j++)
+ switch (value->package.elements[j].type) {
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_STRING:
+ case ACPI_TYPE_LOCAL_REFERENCE:
+ continue;
+
+ default:
+ return false;
+ }
+
+ return true;
+ }
+ return false;
+}
+
+static bool acpi_properties_format_valid(const union acpi_object *properties)
+{
+ int i;
+
+ for (i = 0; i < properties->package.count; i++) {
+ const union acpi_object *property;
+
+ property = &properties->package.elements[i];
+ /*
+ * Only two elements allowed, the first one must be a string and
+ * the second one has to satisfy certain conditions.
+ */
+ if (property->package.count != 2
+ || property->package.elements[0].type != ACPI_TYPE_STRING
+ || !acpi_property_value_ok(&property->package.elements[1]))
+ return false;
+ }
+ return true;
+}
+
+static void acpi_init_of_compatible(struct acpi_device *adev)
+{
+ const union acpi_object *of_compatible;
+ struct acpi_hardware_id *hwid;
+ bool acpi_of = false;
+ int ret;
+
+ /*
+ * Check if the special PRP0001 ACPI ID is present and in that
+ * case we fill in Device Tree compatible properties for this
+ * device.
+ */
+ list_for_each_entry(hwid, &adev->pnp.ids, list) {
+ if (!strcmp(hwid->id, "PRP0001")) {
+ acpi_of = true;
+ break;
+ }
+ }
+
+ if (!acpi_of)
+ return;
+
+ ret = acpi_dev_get_property_array(adev, "compatible", ACPI_TYPE_STRING,
+ &of_compatible);
+ if (ret) {
+ ret = acpi_dev_get_property(adev, "compatible",
+ ACPI_TYPE_STRING, &of_compatible);
+ if (ret) {
+ acpi_handle_warn(adev->handle,
+ "PRP0001 requires compatible property\n");
+ return;
+ }
+ }
+ adev->data.of_compatible = of_compatible;
+}
+
+void acpi_init_properties(struct acpi_device *adev)
+{
+ struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+ const union acpi_object *desc;
+ acpi_status status;
+ int i;
+
+ status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,
+ ACPI_TYPE_PACKAGE);
+ if (ACPI_FAILURE(status))
+ return;
+
+ desc = buf.pointer;
+ if (desc->package.count % 2)
+ goto fail;
+
+ /* Look for the device properties UUID. */
+ for (i = 0; i < desc->package.count; i += 2) {
+ const union acpi_object *uuid, *properties;
+
+ uuid = &desc->package.elements[i];
+ properties = &desc->package.elements[i + 1];
+
+ /*
+ * The first element must be a UUID and the second one must be
+ * a package.
+ */
+ if (uuid->type != ACPI_TYPE_BUFFER || uuid->buffer.length != 16
+ || properties->type != ACPI_TYPE_PACKAGE)
+ break;
+
+ if (memcmp(uuid->buffer.pointer, prp_uuid, sizeof(prp_uuid)))
+ continue;
+
+ /*
+ * We found the matching UUID. Now validate the format of the
+ * package immediately following it.
+ */
+ if (!acpi_properties_format_valid(properties))
+ break;
+
+ adev->data.pointer = buf.pointer;
+ adev->data.properties = properties;
+
+ acpi_init_of_compatible(adev);
+ return;
+ }
+
+ fail:
+ dev_warn(&adev->dev, "Returned _DSD data is not valid, skipping\n");
+ ACPI_FREE(buf.pointer);
+}
+
+void acpi_free_properties(struct acpi_device *adev)
+{
+ ACPI_FREE((void *)adev->data.pointer);
+ adev->data.of_compatible = NULL;
+ adev->data.pointer = NULL;
+ adev->data.properties = NULL;
+}
+
+/**
+ * acpi_dev_get_property - return an ACPI property with given name
+ * @adev: ACPI device to get property
+ * @name: Name of the property
+ * @type: Expected property type
+ * @obj: Location to store the property value (if not %NULL)
+ *
+ * Look up a property with @name and store a pointer to the resulting ACPI
+ * object at the location pointed to by @obj if found.
+ *
+ * Callers must not attempt to free the returned objects. These objects will be
+ * freed by the ACPI core automatically during the removal of @adev.
+ *
+ * Return: %0 if property with @name has been found (success),
+ * %-EINVAL if the arguments are invalid,
+ * %-ENODATA if the property doesn't exist,
+ * %-EPROTO if the property value type doesn't match @type.
+ */
+int acpi_dev_get_property(struct acpi_device *adev, const char *name,
+ acpi_object_type type, const union acpi_object **obj)
+{
+ const union acpi_object *properties;
+ int i;
+
+ if (!adev || !name)
+ return -EINVAL;
+
+ if (!adev->data.pointer || !adev->data.properties)
+ return -ENODATA;
+
+ properties = adev->data.properties;
+ for (i = 0; i < properties->package.count; i++) {
+ const union acpi_object *propname, *propvalue;
+ const union acpi_object *property;
+
+ property = &properties->package.elements[i];
+
+ propname = &property->package.elements[0];
+ propvalue = &property->package.elements[1];
+
+ if (!strcmp(name, propname->string.pointer)) {
+ if (type != ACPI_TYPE_ANY && propvalue->type != type)
+ return -EPROTO;
+ else if (obj)
+ *obj = propvalue;
+
+ return 0;
+ }
+ }
+ return -ENODATA;
+}
+EXPORT_SYMBOL_GPL(acpi_dev_get_property);
+
+/**
+ * acpi_dev_get_property_array - return an ACPI array property with given name
+ * @adev: ACPI device to get property
+ * @name: Name of the property
+ * @type: Expected type of array elements
+ * @obj: Location to store a pointer to the property value (if not NULL)
+ *
+ * Look up an array property with @name and store a pointer to the resulting
+ * ACPI object at the location pointed to by @obj if found.
+ *
+ * Callers must not attempt to free the returned objects. Those objects will be
+ * freed by the ACPI core automatically during the removal of @adev.
+ *
+ * Return: %0 if array property (package) with @name has been found (success),
+ * %-EINVAL if the arguments are invalid,
+ * %-ENODATA if the property doesn't exist,
+ * %-EPROTO if the property is not a package or the type of its elements
+ * doesn't match @type.
+ */
+int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
+ acpi_object_type type,
+ const union acpi_object **obj)
+{
+ const union acpi_object *prop;
+ int ret, i;
+
+ ret = acpi_dev_get_property(adev, name, ACPI_TYPE_PACKAGE, &prop);
+ if (ret)
+ return ret;
+
+ if (type != ACPI_TYPE_ANY) {
+ /* Check that all elements are of correct type. */
+ for (i = 0; i < prop->package.count; i++)
+ if (prop->package.elements[i].type != type)
+ return -EPROTO;
+ }
+ if (obj)
+ *obj = prop;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_dev_get_property_array);
+
+/**
+ * acpi_dev_get_property_reference - returns handle to the referenced object
+ * @adev: ACPI device to get property
+ * @name: Name of the property
+ * @index: Index of the reference to return
+ * @args: Location to store the returned reference with optional arguments
+ *
+ * Find property with @name, verifify that it is a package containing at least
+ * one object reference and if so, store the ACPI device object pointer to the
+ * target object in @args->adev. If the reference includes arguments, store
+ * them in the @args->args[] array.
+ *
+ * If there's more than one reference in the property value package, @index is
+ * used to select the one to return.
+ *
+ * Return: %0 on success, negative error code on failure.
+ */
+int acpi_dev_get_property_reference(struct acpi_device *adev,
+ const char *name, size_t index,
+ struct acpi_reference_args *args)
+{
+ const union acpi_object *element, *end;
+ const union acpi_object *obj;
+ struct acpi_device *device;
+ int ret, idx = 0;
+
+ ret = acpi_dev_get_property(adev, name, ACPI_TYPE_ANY, &obj);
+ if (ret)
+ return ret;
+
+ /*
+ * The simplest case is when the value is a single reference. Just
+ * return that reference then.
+ */
+ if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) {
+ if (index)
+ return -EINVAL;
+
+ ret = acpi_bus_get_device(obj->reference.handle, &device);
+ if (ret)
+ return ret;
+
+ args->adev = device;
+ args->nargs = 0;
+ return 0;
+ }
+
+ /*
+ * If it is not a single reference, then it is a package of
+ * references followed by number of ints as follows:
+ *
+ * Package () { REF, INT, REF, INT, INT }
+ *
+ * The index argument is then used to determine which reference
+ * the caller wants (along with the arguments).
+ */
+ if (obj->type != ACPI_TYPE_PACKAGE || index >= obj->package.count)
+ return -EPROTO;
+
+ element = obj->package.elements;
+ end = element + obj->package.count;
+
+ while (element < end) {
+ u32 nargs, i;
+
+ if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
+ return -EPROTO;
+
+ ret = acpi_bus_get_device(element->reference.handle, &device);
+ if (ret)
+ return -ENODEV;
+
+ element++;
+ nargs = 0;
+
+ /* assume following integer elements are all args */
+ for (i = 0; element + i < end; i++) {
+ int type = element[i].type;
+
+ if (type == ACPI_TYPE_INTEGER)
+ nargs++;
+ else if (type == ACPI_TYPE_LOCAL_REFERENCE)
+ break;
+ else
+ return -EPROTO;
+ }
+
+ if (idx++ == index) {
+ args->adev = device;
+ args->nargs = nargs;
+ for (i = 0; i < nargs; i++)
+ args->args[i] = element[i].integer.value;
+
+ return 0;
+ }
+
+ element += nargs;
+ }
+
+ return -EPROTO;
+}
+EXPORT_SYMBOL_GPL(acpi_dev_get_property_reference);
+
+int acpi_dev_prop_get(struct acpi_device *adev, const char *propname,
+ void **valptr)
+{
+ return acpi_dev_get_property(adev, propname, ACPI_TYPE_ANY,
+ (const union acpi_object **)valptr);
+}
+
+int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
+ enum dev_prop_type proptype, void *val)
+{
+ const union acpi_object *obj;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ if (proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) {
+ ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_INTEGER, &obj);
+ if (ret)
+ return ret;
+
+ switch (proptype) {
+ case DEV_PROP_U8:
+ if (obj->integer.value > U8_MAX)
+ return -EOVERFLOW;
+ *(u8 *)val = obj->integer.value;
+ break;
+ case DEV_PROP_U16:
+ if (obj->integer.value > U16_MAX)
+ return -EOVERFLOW;
+ *(u16 *)val = obj->integer.value;
+ break;
+ case DEV_PROP_U32:
+ if (obj->integer.value > U32_MAX)
+ return -EOVERFLOW;
+ *(u32 *)val = obj->integer.value;
+ break;
+ default:
+ *(u64 *)val = obj->integer.value;
+ break;
+ }
+ } else if (proptype == DEV_PROP_STRING) {
+ ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_STRING, &obj);
+ if (ret)
+ return ret;
+
+ *(char **)val = obj->string.pointer;
+ } else {
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static int acpi_copy_property_array_u8(const union acpi_object *items, u8 *val,
+ size_t nval)
+{
+ int i;
+
+ for (i = 0; i < nval; i++) {
+ if (items[i].type != ACPI_TYPE_INTEGER)
+ return -EPROTO;
+ if (items[i].integer.value > U8_MAX)
+ return -EOVERFLOW;
+
+ val[i] = items[i].integer.value;
+ }
+ return 0;
+}
+
+static int acpi_copy_property_array_u16(const union acpi_object *items,
+ u16 *val, size_t nval)
+{
+ int i;
+
+ for (i = 0; i < nval; i++) {
+ if (items[i].type != ACPI_TYPE_INTEGER)
+ return -EPROTO;
+ if (items[i].integer.value > U16_MAX)
+ return -EOVERFLOW;
+
+ val[i] = items[i].integer.value;
+ }
+ return 0;
+}
+
+static int acpi_copy_property_array_u32(const union acpi_object *items,
+ u32 *val, size_t nval)
+{
+ int i;
+
+ for (i = 0; i < nval; i++) {
+ if (items[i].type != ACPI_TYPE_INTEGER)
+ return -EPROTO;
+ if (items[i].integer.value > U32_MAX)
+ return -EOVERFLOW;
+
+ val[i] = items[i].integer.value;
+ }
+ return 0;
+}
+
+static int acpi_copy_property_array_u64(const union acpi_object *items,
+ u64 *val, size_t nval)
+{
+ int i;
+
+ for (i = 0; i < nval; i++) {
+ if (items[i].type != ACPI_TYPE_INTEGER)
+ return -EPROTO;
+
+ val[i] = items[i].integer.value;
+ }
+ return 0;
+}
+
+static int acpi_copy_property_array_string(const union acpi_object *items,
+ char **val, size_t nval)
+{
+ int i;
+
+ for (i = 0; i < nval; i++) {
+ if (items[i].type != ACPI_TYPE_STRING)
+ return -EPROTO;
+
+ val[i] = items[i].string.pointer;
+ }
+ return 0;
+}
+
+int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
+ enum dev_prop_type proptype, void *val, size_t nval)
+{
+ const union acpi_object *obj;
+ const union acpi_object *items;
+ int ret;
+
+ if (val && nval == 1) {
+ ret = acpi_dev_prop_read_single(adev, propname, proptype, val);
+ if (!ret)
+ return ret;
+ }
+
+ ret = acpi_dev_get_property_array(adev, propname, ACPI_TYPE_ANY, &obj);
+ if (ret)
+ return ret;
+
+ if (!val)
+ return obj->package.count;
+ else if (nval <= 0)
+ return -EINVAL;
+
+ if (nval > obj->package.count)
+ return -EOVERFLOW;
+
+ items = obj->package.elements;
+ switch (proptype) {
+ case DEV_PROP_U8:
+ ret = acpi_copy_property_array_u8(items, (u8 *)val, nval);
+ break;
+ case DEV_PROP_U16:
+ ret = acpi_copy_property_array_u16(items, (u16 *)val, nval);
+ break;
+ case DEV_PROP_U32:
+ ret = acpi_copy_property_array_u32(items, (u32 *)val, nval);
+ break;
+ case DEV_PROP_U64:
+ ret = acpi_copy_property_array_u64(items, (u64 *)val, nval);
+ break;
+ case DEV_PROP_STRING:
+ ret = acpi_copy_property_array_string(items, (char **)val, nval);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 0476e90..9cb5cca 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -124,17 +124,56 @@ static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
if (list_empty(&acpi_dev->pnp.ids))
return 0;
- len = snprintf(modalias, size, "acpi:");
- size -= len;
-
- list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
- count = snprintf(&modalias[len], size, "%s:", id->id);
- if (count < 0)
- return -EINVAL;
- if (count >= size)
- return -ENOMEM;
- len += count;
- size -= count;
+ /*
+ * If the device has PRP0001 we expose DT compatible modalias
+ * instead in form of of:NnameTCcompatible.
+ */
+ if (acpi_dev->data.of_compatible) {
+ struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+ const union acpi_object *of_compatible, *obj;
+ int i, nval;
+ char *c;
+
+ acpi_get_name(acpi_dev->handle, ACPI_SINGLE_NAME, &buf);
+ /* DT strings are all in lower case */
+ for (c = buf.pointer; *c != '\0'; c++)
+ *c = tolower(*c);
+
+ len = snprintf(modalias, size, "of:N%sT", (char *)buf.pointer);
+ ACPI_FREE(buf.pointer);
+
+ of_compatible = acpi_dev->data.of_compatible;
+ if (of_compatible->type == ACPI_TYPE_PACKAGE) {
+ nval = of_compatible->package.count;
+ obj = of_compatible->package.elements;
+ } else { /* Must be ACPI_TYPE_STRING. */
+ nval = 1;
+ obj = of_compatible;
+ }
+ for (i = 0; i < nval; i++, obj++) {
+ count = snprintf(&modalias[len], size, "C%s",
+ obj->string.pointer);
+ if (count < 0)
+ return -EINVAL;
+ if (count >= size)
+ return -ENOMEM;
+
+ len += count;
+ size -= count;
+ }
+ } else {
+ len = snprintf(modalias, size, "acpi:");
+ size -= len;
+
+ list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
+ count = snprintf(&modalias[len], size, "%s:", id->id);
+ if (count < 0)
+ return -EINVAL;
+ if (count >= size)
+ return -ENOMEM;
+ len += count;
+ size -= count;
+ }
}
modalias[len] = '\0';
@@ -902,6 +941,51 @@ int acpi_match_device_ids(struct acpi_device *device,
}
EXPORT_SYMBOL(acpi_match_device_ids);
+/* Performs match against special "PRP0001" shoehorn ACPI ID */
+static bool acpi_of_driver_match_device(struct device *dev,
+ const struct device_driver *drv)
+{
+ const union acpi_object *of_compatible, *obj;
+ struct acpi_device *adev;
+ int i, nval;
+
+ adev = ACPI_COMPANION(dev);
+ if (!adev)
+ return false;
+
+ of_compatible = adev->data.of_compatible;
+ if (!drv->of_match_table || !of_compatible)
+ return false;
+
+ if (of_compatible->type == ACPI_TYPE_PACKAGE) {
+ nval = of_compatible->package.count;
+ obj = of_compatible->package.elements;
+ } else { /* Must be ACPI_TYPE_STRING. */
+ nval = 1;
+ obj = of_compatible;
+ }
+ /* Now we can look for the driver DT compatible strings */
+ for (i = 0; i < nval; i++, obj++) {
+ const struct of_device_id *id;
+
+ for (id = drv->of_match_table; id->compatible[0]; id++)
+ if (!strcasecmp(obj->string.pointer, id->compatible))
+ return true;
+ }
+
+ return false;
+}
+
+bool acpi_driver_match_device(struct device *dev,
+ const struct device_driver *drv)
+{
+ if (!drv->acpi_match_table)
+ return acpi_of_driver_match_device(dev, drv);
+
+ return !!acpi_match_device(drv->acpi_match_table, dev);
+}
+EXPORT_SYMBOL_GPL(acpi_driver_match_device);
+
static void acpi_free_power_resources_lists(struct acpi_device *device)
{
int i;
@@ -922,6 +1006,7 @@ static void acpi_device_release(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
+ acpi_free_properties(acpi_dev);
acpi_free_pnp_ids(&acpi_dev->pnp);
acpi_free_power_resources_lists(acpi_dev);
kfree(acpi_dev);
@@ -1304,6 +1389,26 @@ int acpi_device_add(struct acpi_device *device,
return result;
}
+struct acpi_device *acpi_get_next_child(struct device *dev,
+ struct acpi_device *child)
+{
+ struct acpi_device *adev = ACPI_COMPANION(dev);
+ struct list_head *head, *next;
+
+ if (!adev)
+ return NULL;
+
+ head = &adev->children;
+ if (list_empty(head))
+ return NULL;
+
+ if (!child)
+ return list_first_entry(head, struct acpi_device, node);
+
+ next = child->node.next;
+ return next == head ? NULL : list_entry(next, struct acpi_device, node);
+}
+
/* --------------------------------------------------------------------------
Driver Management
-------------------------------------------------------------------------- */
@@ -1923,9 +2028,11 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
+ device->fwnode.type = FWNODE_ACPI;
acpi_set_device_status(device, sta);
acpi_device_get_busid(device);
acpi_set_pnp_ids(handle, &device->pnp, type);
+ acpi_init_properties(device);
acpi_bus_get_flags(device);
device->flags.match_driver = false;
device->flags.initialized = true;
diff --git a/drivers/acpi/sleep-arm.c b/drivers/acpi/sleep-arm.c
new file mode 100644
index 0000000..54578ef
--- /dev/null
+++ b/drivers/acpi/sleep-arm.c
@@ -0,0 +1,28 @@
+/*
+ * ARM64 Specific Sleep Functionality
+ *
+ * Copyright (C) 2013-2014, Linaro Ltd.
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+
+/*
+ * Currently the ACPI 5.1 standard does not define S states in a
+ * manner which is usable for ARM64. These two stubs are sufficient
+ * that system initialises and device PM works.
+ */
+u32 acpi_target_system_state(void)
+{
+ return ACPI_STATE_S0;
+}
+EXPORT_SYMBOL_GPL(acpi_target_system_state);
+
+int __init acpi_sleep_init(void)
+{
+ return -ENOSYS;
+}
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 6d5a6cd..47f36d4 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -183,6 +183,49 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
}
break;
+ case ACPI_MADT_TYPE_GENERIC_INTERRUPT:
+ {
+ struct acpi_madt_generic_interrupt *p =
+ (struct acpi_madt_generic_interrupt *)header;
+ pr_info("GICC (acpi_id[0x%04x] address[%p] MPDIR[0x%llx] %s)\n",
+ p->uid, (void *)(unsigned long)p->base_address,
+ p->arm_mpidr,
+ (p->flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
+
+ }
+ break;
+
+ case ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR:
+ {
+ struct acpi_madt_generic_distributor *p =
+ (struct acpi_madt_generic_distributor *)header;
+ pr_info("GIC Distributor (gic_id[0x%04x] address[%p] gsi_base[%d])\n",
+ p->gic_id,
+ (void *)(unsigned long)p->base_address,
+ p->global_irq_base);
+ }
+ break;
+
+ case ACPI_MADT_TYPE_GENERIC_MSI_FRAME:
+ {
+ struct acpi_madt_generic_msi_frame *p =
+ (struct acpi_madt_generic_msi_frame *)header;
+ pr_info("GIC MSI Frame (msi_fame_id[%d] address[%p])\n",
+ p->msi_frame_id,
+ (void *)(unsigned long)p->base_address);
+ }
+ break;
+
+ case ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR:
+ {
+ struct acpi_madt_generic_redistributor *p =
+ (struct acpi_madt_generic_redistributor *)header;
+ pr_info("GIC Redistributor (address[%p] region_size[0x%x])\n",
+ (void *)(unsigned long)p->base_address,
+ p->length);
+ }
+ break;
+
default:
pr_warn("Found unsupported MADT entry (type = 0x%x)\n",
header->type);
@@ -192,17 +235,14 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
int __init
-acpi_table_parse_entries(char *id,
- unsigned long table_size,
- int entry_id,
- acpi_tbl_entry_handler handler,
- unsigned int max_entries)
+acpi_parse_entries(unsigned long table_size,
+ acpi_tbl_entry_handler handler,
+ struct acpi_table_header *table_header,
+ int entry_id, unsigned int max_entries)
{
- struct acpi_table_header *table_header = NULL;
struct acpi_subtable_header *entry;
- unsigned int count = 0;
+ int count = 0;
unsigned long table_end;
- acpi_size tbl_size;
if (acpi_disabled)
return -ENODEV;
@@ -210,13 +250,11 @@ acpi_table_parse_entries(char *id,
if (!handler)
return -EINVAL;
- if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
- acpi_get_table_with_size(id, acpi_apic_instance, &table_header, &tbl_size);
- else
- acpi_get_table_with_size(id, 0, &table_header, &tbl_size);
+ if (!table_size)
+ return -EINVAL;
if (!table_header) {
- pr_warn("%4.4s not present\n", id);
+ pr_warn("Table header not present\n");
return -ENODEV;
}
@@ -230,32 +268,67 @@ acpi_table_parse_entries(char *id,
while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
table_end) {
if (entry->type == entry_id
- && (!max_entries || count++ < max_entries))
+ && (!max_entries || count < max_entries)) {
if (handler(entry, table_end))
- goto err;
+ return -EINVAL;
+
+ count++;
+ }
/*
* If entry->length is 0, break from this loop to avoid
* infinite loop.
*/
if (entry->length == 0) {
- pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, entry_id);
- goto err;
+ pr_err("[0x%02x] Invalid zero length\n", entry_id);
+ return -EINVAL;
}
entry = (struct acpi_subtable_header *)
((unsigned long)entry + entry->length);
}
+
if (max_entries && count > max_entries) {
pr_warn("[%4.4s:0x%02x] ignored %i entries of %i found\n",
- id, entry_id, count - max_entries, count);
+ table_header->signature, entry_id, count - max_entries,
+ count);
}
- early_acpi_os_unmap_memory((char *)table_header, tbl_size);
return count;
-err:
+}
+
+int __init
+acpi_table_parse_entries(char *id,
+ unsigned long table_size,
+ int entry_id,
+ acpi_tbl_entry_handler handler,
+ unsigned int max_entries)
+{
+ struct acpi_table_header *table_header = NULL;
+ acpi_size tbl_size;
+ int count;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ if (!handler)
+ return -EINVAL;
+
+ if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
+ acpi_get_table_with_size(id, acpi_apic_instance, &table_header, &tbl_size);
+ else
+ acpi_get_table_with_size(id, 0, &table_header, &tbl_size);
+
+ if (!table_header) {
+ pr_warn("%4.4s not present\n", id);
+ return -ENODEV;
+ }
+
+ count = acpi_parse_entries(table_size, handler, table_header,
+ entry_id, max_entries);
+
early_acpi_os_unmap_memory((char *)table_header, tbl_size);
- return -EINVAL;
+ return count;
}
int __init
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 371ac12..af325a7 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -723,3 +723,29 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs)
return false;
}
EXPORT_SYMBOL(acpi_check_dsm);
+
+/**
+ * acpi_check_coherency - check for memory coherency of a device
+ * @handle: ACPI device handle
+ * @val: Pointer to returned value
+ *
+ * Search a device and its parents for a _CCA method and return
+ * its value.
+ */
+acpi_status acpi_check_coherency(acpi_handle handle, int *val)
+{
+ unsigned long long data;
+ acpi_status status;
+
+ do {
+ status = acpi_evaluate_integer(handle, "_CCA", NULL, &data);
+ if (!ACPI_FAILURE(status)) {
+ *val = data;
+ break;
+ }
+ status = acpi_get_parent(handle, &handle);
+ } while (!ACPI_FAILURE(status));
+
+ return status;
+}
+EXPORT_SYMBOL(acpi_check_coherency);
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index cd4cccb..edb00c6 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -48,7 +48,7 @@ config ATA_VERBOSE_ERROR
config ATA_ACPI
bool "ATA ACPI Support"
- depends on ACPI && PCI
+ depends on ACPI
default y
help
This option adds support for ATA-related ACPI objects.
diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index 06f1d59..df2ea85 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -20,6 +20,9 @@
#include <linux/platform_device.h>
#include <linux/libata.h>
#include <linux/ahci_platform.h>
+#ifdef CONFIG_ATA_ACPI
+#include <linux/acpi.h>
+#endif
#include "ahci.h"
static const struct ata_port_info ahci_port_info = {
@@ -71,6 +74,13 @@ static const struct of_device_id ahci_of_match[] = {
};
MODULE_DEVICE_TABLE(of, ahci_of_match);
+#ifdef CONFIG_ATA_ACPI
+static const struct acpi_device_id ahci_acpi_match[] = {
+ { "AMDI0600", 0 }, /* AMD Seattle AHCI */
+ { },
+};
+#endif
+
static struct platform_driver ahci_driver = {
.probe = ahci_probe,
.remove = ata_platform_remove_one,
@@ -78,6 +88,9 @@ static struct platform_driver ahci_driver = {
.name = "ahci",
.owner = THIS_MODULE,
.of_match_table = ahci_of_match,
+#ifdef CONFIG_ATA_ACPI
+ .acpi_match_table = ACPI_PTR(ahci_acpi_match),
+#endif
.pm = &ahci_pm_ops,
},
};
diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c
index 0f8538f..2d8103a 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -28,6 +28,7 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/phy/phy.h>
+#include <linux/acpi.h>
#include "ahci.h"
/* Max # of disk per a controller */
@@ -137,7 +138,8 @@ static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc)
struct xgene_ahci_context *ctx = hpriv->plat_data;
int rc = 0;
- if (unlikely(ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA))
+ if (unlikely(ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA ||
+ ctx->last_cmd[ap->port_no] == ATA_CMD_SMART))
xgene_ahci_restart_engine(ap);
rc = ahci_qc_issue(qc);
@@ -148,14 +150,6 @@ static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc)
return rc;
}
-static bool xgene_ahci_is_memram_inited(struct xgene_ahci_context *ctx)
-{
- void __iomem *diagcsr = ctx->csr_diag;
-
- return (readl(diagcsr + CFG_MEM_RAM_SHUTDOWN) == 0 &&
- readl(diagcsr + BLOCK_MEM_RDY) == 0xFFFFFFFF);
-}
-
/**
* xgene_ahci_read_id - Read ID data from the specified device
* @dev: device
@@ -501,11 +495,6 @@ static int xgene_ahci_probe(struct platform_device *pdev)
return -ENODEV;
}
- if (xgene_ahci_is_memram_inited(ctx)) {
- dev_info(dev, "skip clock and PHY initialization\n");
- goto skip_clk_phy;
- }
-
/* Due to errata, HW requires full toggle transition */
rc = ahci_platform_enable_clks(hpriv);
if (rc)
@@ -518,7 +507,7 @@ static int xgene_ahci_probe(struct platform_device *pdev)
/* Configure the host controller */
xgene_ahci_hw_init(hpriv);
-skip_clk_phy:
+
hpriv->flags = AHCI_HFLAG_NO_PMP | AHCI_HFLAG_NO_NCQ;
rc = ahci_platform_init_host(pdev, hpriv, &xgene_ahci_port_info);
@@ -533,6 +522,16 @@ disable_resources:
return rc;
}
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgene_ahci_acpi_match[] = {
+ { "APMC0D00", },
+ { "APMC0D0D", },
+ { "APMC0D09", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, xgene_ahci_acpi_match);
+#endif
+
static const struct of_device_id xgene_ahci_of_match[] = {
{.compatible = "apm,xgene-ahci"},
{},
@@ -546,6 +545,7 @@ static struct platform_driver xgene_ahci_driver = {
.name = "xgene-ahci",
.owner = THIS_MODULE,
.of_match_table = xgene_ahci_of_match,
+ .acpi_match_table = ACPI_PTR(xgene_ahci_acpi_match),
},
};
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 6922cd6..53c3fe1 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -4,7 +4,7 @@ obj-y := component.o core.o bus.o dd.o syscore.o \
driver.o class.o platform.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o \
- topology.o container.o
+ topology.o container.o property.o
obj-$(CONFIG_DEVTMPFS) += devtmpfs.o
obj-$(CONFIG_DMA_CMA) += dma-contiguous.o
obj-y += power/
diff --git a/drivers/base/property.c b/drivers/base/property.c
new file mode 100644
index 0000000..c458458
--- /dev/null
+++ b/drivers/base/property.c
@@ -0,0 +1,431 @@
+/*
+ * property.c - Unified device property interface.
+ *
+ * Copyright (C) 2014, Intel Corporation
+ * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/property.h>
+#include <linux/export.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
+
+/**
+ * device_property_present - check if a property of a device is present
+ * @dev: Device whose property is being checked
+ * @propname: Name of the property
+ *
+ * Check if property @propname is present in the device firmware description.
+ */
+bool device_property_present(struct device *dev, const char *propname)
+{
+ if (IS_ENABLED(CONFIG_OF) && dev->of_node)
+ return of_property_read_bool(dev->of_node, propname);
+
+ return !acpi_dev_prop_get(ACPI_COMPANION(dev), propname, NULL);
+}
+EXPORT_SYMBOL_GPL(device_property_present);
+
+/**
+ * fwnode_property_present - check if a property of a firmware node is present
+ * @fwnode: Firmware node whose property to check
+ * @propname: Name of the property
+ */
+bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname)
+{
+ if (is_of_node(fwnode))
+ return of_property_read_bool(of_node(fwnode), propname);
+ else if (is_acpi_node(fwnode))
+ return !acpi_dev_prop_get(acpi_node(fwnode), propname, NULL);
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(fwnode_property_present);
+
+#define OF_DEV_PROP_READ_ARRAY(node, propname, type, val, nval) \
+ (val) ? of_property_read_##type##_array((node), (propname), (val), (nval)) \
+ : of_property_count_elems_of_size((node), (propname), sizeof(type))
+
+#define DEV_PROP_READ_ARRAY(_dev_, _propname_, _type_, _proptype_, _val_, _nval_) \
+ IS_ENABLED(CONFIG_OF) && _dev_->of_node ? \
+ (OF_DEV_PROP_READ_ARRAY(_dev_->of_node, _propname_, _type_, \
+ _val_, _nval_)) : \
+ acpi_dev_prop_read(ACPI_COMPANION(_dev_), _propname_, \
+ _proptype_, _val_, _nval_)
+
+/**
+ * device_property_read_u8_array - return a u8 array property of a device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Function reads an array of u8 properties with @propname from the device
+ * firmware description and stores them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected.
+ */
+int device_property_read_u8_array(struct device *dev, const char *propname,
+ u8 *val, size_t nval)
+{
+ return DEV_PROP_READ_ARRAY(dev, propname, u8, DEV_PROP_U8, val, nval);
+}
+EXPORT_SYMBOL_GPL(device_property_read_u8_array);
+
+/**
+ * device_property_read_u16_array - return a u16 array property of a device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Function reads an array of u16 properties with @propname from the device
+ * firmware description and stores them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected.
+ */
+int device_property_read_u16_array(struct device *dev, const char *propname,
+ u16 *val, size_t nval)
+{
+ return DEV_PROP_READ_ARRAY(dev, propname, u16, DEV_PROP_U16, val, nval);
+}
+EXPORT_SYMBOL_GPL(device_property_read_u16_array);
+
+/**
+ * device_property_read_u32_array - return a u32 array property of a device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Function reads an array of u32 properties with @propname from the device
+ * firmware description and stores them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected.
+ */
+int device_property_read_u32_array(struct device *dev, const char *propname,
+ u32 *val, size_t nval)
+{
+ return DEV_PROP_READ_ARRAY(dev, propname, u32, DEV_PROP_U32, val, nval);
+}
+EXPORT_SYMBOL_GPL(device_property_read_u32_array);
+
+/**
+ * device_property_read_u64_array - return a u64 array property of a device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Function reads an array of u64 properties with @propname from the device
+ * firmware description and stores them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected.
+ */
+int device_property_read_u64_array(struct device *dev, const char *propname,
+ u64 *val, size_t nval)
+{
+ return DEV_PROP_READ_ARRAY(dev, propname, u64, DEV_PROP_U64, val, nval);
+}
+EXPORT_SYMBOL_GPL(device_property_read_u64_array);
+
+/**
+ * device_property_read_string_array - return a string array property of device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Function reads an array of string properties with @propname from the device
+ * firmware description and stores them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO or %-EILSEQ if the property is not an array of strings,
+ * %-EOVERFLOW if the size of the property is not as expected.
+ */
+int device_property_read_string_array(struct device *dev, const char *propname,
+ const char **val, size_t nval)
+{
+ return IS_ENABLED(CONFIG_OF) && dev->of_node ?
+ of_property_read_string_array(dev->of_node, propname, val, nval) :
+ acpi_dev_prop_read(ACPI_COMPANION(dev), propname,
+ DEV_PROP_STRING, val, nval);
+}
+EXPORT_SYMBOL_GPL(device_property_read_string_array);
+
+/**
+ * device_property_read_string - return a string property of a device
+ * @dev: Device to get the property of
+ * @propname: Name of the property
+ * @val: The value is stored here
+ *
+ * Function reads property @propname from the device firmware description and
+ * stores the value into @val if found. The value is checked to be a string.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO or %-EILSEQ if the property type is not a string.
+ */
+int device_property_read_string(struct device *dev, const char *propname,
+ const char **val)
+{
+ return IS_ENABLED(CONFIG_OF) && dev->of_node ?
+ of_property_read_string(dev->of_node, propname, val) :
+ acpi_dev_prop_read(ACPI_COMPANION(dev), propname,
+ DEV_PROP_STRING, val, 1);
+}
+EXPORT_SYMBOL_GPL(device_property_read_string);
+
+#define FWNODE_PROP_READ_ARRAY(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \
+({ \
+ int _ret_; \
+ if (is_of_node(_fwnode_)) \
+ _ret_ = OF_DEV_PROP_READ_ARRAY(of_node(_fwnode_), _propname_, \
+ _type_, _val_, _nval_); \
+ else if (is_acpi_node(_fwnode_)) \
+ _ret_ = acpi_dev_prop_read(acpi_node(_fwnode_), _propname_, \
+ _proptype_, _val_, _nval_); \
+ else \
+ _ret_ = -ENXIO; \
+ _ret_; \
+})
+
+/**
+ * fwnode_property_read_u8_array - return a u8 array property of firmware node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Read an array of u8 properties with @propname from @fwnode and stores them to
+ * @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
+ const char *propname, u8 *val, size_t nval)
+{
+ return FWNODE_PROP_READ_ARRAY(fwnode, propname, u8, DEV_PROP_U8,
+ val, nval);
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_u8_array);
+
+/**
+ * fwnode_property_read_u16_array - return a u16 array property of firmware node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Read an array of u16 properties with @propname from @fwnode and store them to
+ * @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_u16_array(struct fwnode_handle *fwnode,
+ const char *propname, u16 *val, size_t nval)
+{
+ return FWNODE_PROP_READ_ARRAY(fwnode, propname, u16, DEV_PROP_U16,
+ val, nval);
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_u16_array);
+
+/**
+ * fwnode_property_read_u32_array - return a u32 array property of firmware node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Read an array of u32 properties with @propname from @fwnode store them to
+ * @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_u32_array(struct fwnode_handle *fwnode,
+ const char *propname, u32 *val, size_t nval)
+{
+ return FWNODE_PROP_READ_ARRAY(fwnode, propname, u32, DEV_PROP_U32,
+ val, nval);
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_u32_array);
+
+/**
+ * fwnode_property_read_u64_array - return a u64 array property firmware node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Read an array of u64 properties with @propname from @fwnode and store them to
+ * @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of numbers,
+ * %-EOVERFLOW if the size of the property is not as expected,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_u64_array(struct fwnode_handle *fwnode,
+ const char *propname, u64 *val, size_t nval)
+{
+ return FWNODE_PROP_READ_ARRAY(fwnode, propname, u64, DEV_PROP_U64,
+ val, nval);
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_u64_array);
+
+/**
+ * fwnode_property_read_string_array - return string array property of a node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The values are stored here
+ * @nval: Size of the @val array
+ *
+ * Read an string list property @propname from the given firmware node and store
+ * them to @val if found.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO if the property is not an array of strings,
+ * %-EOVERFLOW if the size of the property is not as expected,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
+ const char *propname, const char **val,
+ size_t nval)
+{
+ if (is_of_node(fwnode))
+ return of_property_read_string_array(of_node(fwnode), propname,
+ val, nval);
+ else if (is_acpi_node(fwnode))
+ return acpi_dev_prop_read(acpi_node(fwnode), propname,
+ DEV_PROP_STRING, val, nval);
+
+ return -ENXIO;
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_string_array);
+
+/**
+ * fwnode_property_read_string - return a string property of a firmware node
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property
+ * @val: The value is stored here
+ *
+ * Read property @propname from the given firmware node and store the value into
+ * @val if found. The value is checked to be a string.
+ *
+ * Return: %0 if the property was found (success),
+ * %-EINVAL if given arguments are not valid,
+ * %-ENODATA if the property does not have a value,
+ * %-EPROTO or %-EILSEQ if the property is not a string,
+ * %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_read_string(struct fwnode_handle *fwnode,
+ const char *propname, const char **val)
+{
+ if (is_of_node(fwnode))
+ return of_property_read_string(of_node(fwnode),propname, val);
+ else if (is_acpi_node(fwnode))
+ return acpi_dev_prop_read(acpi_node(fwnode), propname,
+ DEV_PROP_STRING, val, 1);
+
+ return -ENXIO;
+}
+EXPORT_SYMBOL_GPL(fwnode_property_read_string);
+
+/**
+ * device_get_next_child_node - Return the next child node handle for a device
+ * @dev: Device to find the next child node for.
+ * @child: Handle to one of the device's child nodes or a null handle.
+ */
+struct fwnode_handle *device_get_next_child_node(struct device *dev,
+ struct fwnode_handle *child)
+{
+ if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
+ struct device_node *node;
+
+ node = of_get_next_available_child(dev->of_node, of_node(child));
+ if (node)
+ return &node->fwnode;
+ } else if (IS_ENABLED(CONFIG_ACPI)) {
+ struct acpi_device *node;
+
+ node = acpi_get_next_child(dev, acpi_node(child));
+ if (node)
+ return acpi_fwnode_handle(node);
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(device_get_next_child_node);
+
+/**
+ * fwnode_handle_put - Drop reference to a device node
+ * @fwnode: Pointer to the device node to drop the reference to.
+ *
+ * This has to be used when terminating device_for_each_child_node() iteration
+ * with break or return to prevent stale device node references from being left
+ * behind.
+ */
+void fwnode_handle_put(struct fwnode_handle *fwnode)
+{
+ if (is_of_node(fwnode))
+ of_node_put(of_node(fwnode));
+}
+EXPORT_SYMBOL_GPL(fwnode_handle_put);
+
+/**
+ * device_get_child_node_count - return the number of child nodes for device
+ * @dev: Device to cound the child nodes for
+ */
+unsigned int device_get_child_node_count(struct device *dev)
+{
+ struct fwnode_handle *child;
+ unsigned int count = 0;
+
+ device_for_each_child_node(dev, child)
+ count++;
+
+ return count;
+}
+EXPORT_SYMBOL_GPL(device_get_child_node_count);
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 43005d4..c9411e6 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -21,6 +21,7 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/sched_clock.h>
+#include <linux/acpi.h>
#include <asm/arch_timer.h>
#include <asm/virt.h>
@@ -61,7 +62,8 @@ enum ppi_nr {
MAX_TIMER_PPI
};
-static int arch_timer_ppi[MAX_TIMER_PPI];
+int arch_timer_ppi[MAX_TIMER_PPI];
+EXPORT_SYMBOL(arch_timer_ppi);
static struct clock_event_device __percpu *arch_timer_evt;
@@ -370,8 +372,12 @@ arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np)
if (arch_timer_rate)
return;
- /* Try to determine the frequency from the device tree or CNTFRQ */
- if (of_property_read_u32(np, "clock-frequency", &arch_timer_rate)) {
+ /*
+ * Try to determine the frequency from the device tree or CNTFRQ,
+ * if ACPI is enabled, get the frequency from CNTFRQ ONLY.
+ */
+ if (!acpi_disabled ||
+ of_property_read_u32(np, "clock-frequency", &arch_timer_rate)) {
if (cntbase)
arch_timer_rate = readl_relaxed(cntbase + CNTFRQ);
else
@@ -687,20 +693,8 @@ static void __init arch_timer_common_init(void)
arch_timer_arch_init();
}
-static void __init arch_timer_init(struct device_node *np)
+static void __init arch_timer_init(void)
{
- int i;
-
- if (arch_timers_present & ARCH_CP15_TIMER) {
- pr_warn("arch_timer: multiple nodes in dt, skipping\n");
- return;
- }
-
- arch_timers_present |= ARCH_CP15_TIMER;
- for (i = PHYS_SECURE_PPI; i < MAX_TIMER_PPI; i++)
- arch_timer_ppi[i] = irq_of_parse_and_map(np, i);
- arch_timer_detect_rate(NULL, np);
-
/*
* If HYP mode is available, we know that the physical timer
* has been configured to be accessible from PL1. Use it, so
@@ -719,13 +713,31 @@ static void __init arch_timer_init(struct device_node *np)
}
}
- arch_timer_c3stop = !of_property_read_bool(np, "always-on");
-
arch_timer_register();
arch_timer_common_init();
}
-CLOCKSOURCE_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_init);
-CLOCKSOURCE_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_init);
+
+static void __init arch_timer_of_init(struct device_node *np)
+{
+ int i;
+
+ if (arch_timers_present & ARCH_CP15_TIMER) {
+ pr_warn("arch_timer: multiple nodes in dt, skipping\n");
+ return;
+ }
+
+ arch_timers_present |= ARCH_CP15_TIMER;
+ for (i = PHYS_SECURE_PPI; i < MAX_TIMER_PPI; i++)
+ arch_timer_ppi[i] = irq_of_parse_and_map(np, i);
+
+ arch_timer_detect_rate(NULL, np);
+
+ arch_timer_c3stop = !of_property_read_bool(np, "always-on");
+
+ arch_timer_init();
+}
+CLOCKSOURCE_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_of_init);
+CLOCKSOURCE_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_of_init);
static void __init arch_timer_mem_init(struct device_node *np)
{
@@ -792,3 +804,71 @@ static void __init arch_timer_mem_init(struct device_node *np)
}
CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem",
arch_timer_mem_init);
+
+#ifdef CONFIG_ACPI
+static int __init
+map_generic_timer_interrupt(u32 interrupt, u32 flags)
+{
+ int trigger, polarity;
+
+ if (!interrupt)
+ return 0;
+
+ trigger = (flags & ACPI_GTDT_INTERRUPT_MODE) ? ACPI_EDGE_SENSITIVE
+ : ACPI_LEVEL_SENSITIVE;
+
+ polarity = (flags & ACPI_GTDT_INTERRUPT_POLARITY) ? ACPI_ACTIVE_LOW
+ : ACPI_ACTIVE_HIGH;
+
+ return acpi_register_gsi(NULL, interrupt, trigger, polarity);
+}
+
+/* Initialize per-processor generic timer */
+static int __init arch_timer_acpi_init(struct acpi_table_header *table)
+{
+ struct acpi_table_gtdt *gtdt;
+
+ if (arch_timers_present & ARCH_CP15_TIMER) {
+ pr_warn("arch_timer: already initialized, skipping\n");
+ return -EINVAL;
+ }
+
+ gtdt = container_of(table, struct acpi_table_gtdt, header);
+
+ arch_timers_present |= ARCH_CP15_TIMER;
+
+ arch_timer_ppi[PHYS_SECURE_PPI] =
+ map_generic_timer_interrupt(gtdt->secure_el1_interrupt,
+ gtdt->secure_el1_flags);
+
+ arch_timer_ppi[PHYS_NONSECURE_PPI] =
+ map_generic_timer_interrupt(gtdt->non_secure_el1_interrupt,
+ gtdt->non_secure_el1_flags);
+
+ arch_timer_ppi[VIRT_PPI] =
+ map_generic_timer_interrupt(gtdt->virtual_timer_interrupt,
+ gtdt->virtual_timer_flags);
+
+ arch_timer_ppi[HYP_PPI] =
+ map_generic_timer_interrupt(gtdt->non_secure_el2_interrupt,
+ gtdt->non_secure_el2_flags);
+
+ /* Get the frequency from CNTFRQ */
+ arch_timer_detect_rate(NULL, NULL);
+
+ /* Always-on capability */
+ arch_timer_c3stop = !(gtdt->non_secure_el1_flags & ACPI_GTDT_ALWAYS_ON);
+
+ arch_timer_init();
+ return 0;
+}
+
+/* Initialize all the generic timers presented in GTDT */
+void __init acpi_generic_timer_init(void)
+{
+ if (acpi_disabled)
+ return;
+
+ acpi_table_parse(ACPI_SIG_GTDT, arch_timer_acpi_init);
+}
+#endif
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 17afc51..c5f7b4e 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -93,6 +93,12 @@ static void dmi_table(u8 *buf, int len, int num,
const struct dmi_header *dm = (const struct dmi_header *)data;
/*
+ * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
+ */
+ if (dm->type == DMI_ENTRY_END_OF_TABLE)
+ break;
+
+ /*
* We want to know the total length (formatted area and
* strings) before decoding to make sure we won't run off the
* table in dmi_decode or dmi_string
@@ -107,7 +113,7 @@ static void dmi_table(u8 *buf, int len, int num,
}
}
-static u32 dmi_base;
+static phys_addr_t dmi_base;
static u16 dmi_len;
static u16 dmi_num;
@@ -467,7 +473,7 @@ static int __init dmi_present(const u8 *buf)
if (memcmp(buf, "_SM_", 4) == 0 &&
buf[5] < 32 && dmi_checksum(buf, buf[5])) {
- smbios_ver = (buf[6] << 8) + buf[7];
+ smbios_ver = get_unaligned_be16(buf + 6);
/* Some BIOS report weird SMBIOS version, fix that up */
switch (smbios_ver) {
@@ -489,10 +495,9 @@ static int __init dmi_present(const u8 *buf)
buf += 16;
if (memcmp(buf, "_DMI_", 5) == 0 && dmi_checksum(buf, 15)) {
- dmi_num = (buf[13] << 8) | buf[12];
- dmi_len = (buf[7] << 8) | buf[6];
- dmi_base = (buf[11] << 24) | (buf[10] << 16) |
- (buf[9] << 8) | buf[8];
+ dmi_num = get_unaligned_le16(buf + 12);
+ dmi_len = get_unaligned_le16(buf + 6);
+ dmi_base = get_unaligned_le32(buf + 8);
if (dmi_walk_early(dmi_decode) == 0) {
if (smbios_ver) {
@@ -514,12 +519,72 @@ static int __init dmi_present(const u8 *buf)
return 1;
}
+/*
+ * Check for the SMBIOS 3.0 64-bit entry point signature. Unlike the legacy
+ * 32-bit entry point, there is no embedded DMI header (_DMI_) in here.
+ */
+static int __init dmi_smbios3_present(const u8 *buf)
+{
+ if (memcmp(buf, "_SM3_", 5) == 0 &&
+ buf[6] < 32 && dmi_checksum(buf, buf[6])) {
+ dmi_ver = get_unaligned_be16(buf + 7);
+ dmi_len = get_unaligned_le32(buf + 12);
+ dmi_base = get_unaligned_le64(buf + 16);
+
+ /*
+ * The 64-bit SMBIOS 3.0 entry point no longer has a field
+ * containing the number of structures present in the table.
+ * Instead, it defines the table size as a maximum size, and
+ * relies on the end-of-table structure type (#127) to be used
+ * to signal the end of the table.
+ * So let's define dmi_num as an upper bound as well: each
+ * structure has a 4 byte header, so dmi_len / 4 is an upper
+ * bound for the number of structures in the table.
+ */
+ dmi_num = dmi_len / 4;
+
+ if (dmi_walk_early(dmi_decode) == 0) {
+ pr_info("SMBIOS %d.%d present.\n",
+ dmi_ver >> 8, dmi_ver & 0xFF);
+ dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string));
+ pr_debug("DMI: %s\n", dmi_ids_string);
+ return 0;
+ }
+ }
+ return 1;
+}
+
void __init dmi_scan_machine(void)
{
char __iomem *p, *q;
char buf[32];
if (efi_enabled(EFI_CONFIG_TABLES)) {
+ /*
+ * According to the DMTF SMBIOS reference spec v3.0.0, it is
+ * allowed to define both the 64-bit entry point (smbios3) and
+ * the 32-bit entry point (smbios), in which case they should
+ * either both point to the same SMBIOS structure table, or the
+ * table pointed to by the 64-bit entry point should contain a
+ * superset of the table contents pointed to by the 32-bit entry
+ * point (section 5.2)
+ * This implies that the 64-bit entry point should have
+ * precedence if it is defined and supported by the OS. If we
+ * have the 64-bit entry point, but fail to decode it, fall
+ * back to the legacy one (if available)
+ */
+ if (efi.smbios3 != EFI_INVALID_TABLE_ADDR) {
+ p = dmi_early_remap(efi.smbios3, 32);
+ if (p == NULL)
+ goto error;
+ memcpy_fromio(buf, p, 32);
+ dmi_early_unmap(p, 32);
+
+ if (!dmi_smbios3_present(buf)) {
+ dmi_available = 1;
+ goto out;
+ }
+ }
if (efi.smbios == EFI_INVALID_TABLE_ADDR)
goto error;
@@ -552,7 +617,7 @@ void __init dmi_scan_machine(void)
memset(buf, 0, 16);
for (q = p; q < p + 0x10000; q += 16) {
memcpy_fromio(buf + 16, q, 16);
- if (!dmi_present(buf)) {
+ if (!dmi_smbios3_present(buf) || !dmi_present(buf)) {
dmi_available = 1;
dmi_early_unmap(p, 0x10000);
goto out;
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 8590099..9035c1b 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -30,6 +30,7 @@ struct efi __read_mostly efi = {
.acpi = EFI_INVALID_TABLE_ADDR,
.acpi20 = EFI_INVALID_TABLE_ADDR,
.smbios = EFI_INVALID_TABLE_ADDR,
+ .smbios3 = EFI_INVALID_TABLE_ADDR,
.sal_systab = EFI_INVALID_TABLE_ADDR,
.boot_info = EFI_INVALID_TABLE_ADDR,
.hcdp = EFI_INVALID_TABLE_ADDR,
@@ -86,6 +87,8 @@ static ssize_t systab_show(struct kobject *kobj,
str += sprintf(str, "ACPI=0x%lx\n", efi.acpi);
if (efi.smbios != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
+ if (efi.smbios3 != EFI_INVALID_TABLE_ADDR)
+ str += sprintf(str, "SMBIOS3=0x%lx\n", efi.smbios3);
if (efi.hcdp != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "HCDP=0x%lx\n", efi.hcdp);
if (efi.boot_info != EFI_INVALID_TABLE_ADDR)
@@ -260,6 +263,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
{MPS_TABLE_GUID, "MPS", &efi.mps},
{SAL_SYSTEM_TABLE_GUID, "SALsystab", &efi.sal_systab},
{SMBIOS_TABLE_GUID, "SMBIOS", &efi.smbios},
+ {SMBIOS3_TABLE_GUID, "SMBIOS 3.0", &efi.smbios3},
{UGA_IO_PROTOCOL_GUID, "UGA", &efi.uga},
{NULL_GUID, NULL, NULL},
};
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index 75ee059..eb48a1a 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -247,9 +247,18 @@ unsigned long __init efi_entry(void *handle, efi_system_table_t *sys_table,
goto fail_free_cmdline;
}
}
- if (!fdt_addr)
+
+ if (fdt_addr) {
+ pr_efi(sys_table, "Using DTB from command line\n");
+ } else {
/* Look for a device tree configuration table entry. */
fdt_addr = (uintptr_t)get_fdt(sys_table);
+ if (fdt_addr)
+ pr_efi(sys_table, "Using DTB from configuration table\n");
+ }
+
+ if (!fdt_addr)
+ pr_efi(sys_table, "Generating empty DTB\n");
status = handle_cmdline_files(sys_table, image, cmdline_ptr,
"initrd=", dram_base + SZ_512M,
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index 954b9f6..13dbd3d 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -109,6 +109,38 @@ struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
EXPORT_SYMBOL(__devm_gpiod_get_index);
/**
+ * devm_get_gpiod_from_child - get a GPIO descriptor from a device's child node
+ * @dev: GPIO consumer
+ * @child: firmware node (child of @dev)
+ *
+ * GPIO descriptors returned from this function are automatically disposed on
+ * driver detach.
+ */
+struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
+ struct fwnode_handle *child)
+{
+ struct gpio_desc **dr;
+ struct gpio_desc *desc;
+
+ dr = devres_alloc(devm_gpiod_release, sizeof(struct gpio_desc *),
+ GFP_KERNEL);
+ if (!dr)
+ return ERR_PTR(-ENOMEM);
+
+ desc = fwnode_get_named_gpiod(child, "gpios");
+ if (IS_ERR(desc)) {
+ devres_free(dr);
+ return desc;
+ }
+
+ *dr = desc;
+ devres_add(dev, dr);
+
+ return desc;
+}
+EXPORT_SYMBOL(devm_get_gpiod_from_child);
+
+/**
* devm_gpiod_get_index_optional - Resource-managed gpiod_get_index_optional()
* @dev: GPIO consumer
* @con_id: function within the GPIO consumer
diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c
index 41e91d7..99720c8 100644
--- a/drivers/gpio/gpio-sch.c
+++ b/drivers/gpio/gpio-sch.c
@@ -29,290 +29,221 @@
#include <linux/gpio.h>
-static DEFINE_SPINLOCK(gpio_lock);
-
-#define CGEN (0x00)
-#define CGIO (0x04)
-#define CGLV (0x08)
-
-#define RGEN (0x20)
-#define RGIO (0x24)
-#define RGLV (0x28)
-
-static unsigned short gpio_ba;
-
-static int sch_gpio_core_direction_in(struct gpio_chip *gc, unsigned gpio_num)
-{
- u8 curr_dirs;
- unsigned short offset, bit;
-
- spin_lock(&gpio_lock);
-
- offset = CGIO + gpio_num / 8;
- bit = gpio_num % 8;
-
- curr_dirs = inb(gpio_ba + offset);
-
- if (!(curr_dirs & (1 << bit)))
- outb(curr_dirs | (1 << bit), gpio_ba + offset);
+#define GEN 0x00
+#define GIO 0x04
+#define GLV 0x08
+
+struct sch_gpio {
+ struct gpio_chip chip;
+ spinlock_t lock;
+ unsigned short iobase;
+ unsigned short core_base;
+ unsigned short resume_base;
+};
- spin_unlock(&gpio_lock);
- return 0;
-}
+#define to_sch_gpio(c) container_of(c, struct sch_gpio, chip)
-static int sch_gpio_core_get(struct gpio_chip *gc, unsigned gpio_num)
+static unsigned sch_gpio_offset(struct sch_gpio *sch, unsigned gpio,
+ unsigned reg)
{
- int res;
- unsigned short offset, bit;
+ unsigned base = 0;
- offset = CGLV + gpio_num / 8;
- bit = gpio_num % 8;
+ if (gpio >= sch->resume_base) {
+ gpio -= sch->resume_base;
+ base += 0x20;
+ }
- res = !!(inb(gpio_ba + offset) & (1 << bit));
- return res;
+ return base + reg + gpio / 8;
}
-static void sch_gpio_core_set(struct gpio_chip *gc, unsigned gpio_num, int val)
+static unsigned sch_gpio_bit(struct sch_gpio *sch, unsigned gpio)
{
- u8 curr_vals;
- unsigned short offset, bit;
-
- spin_lock(&gpio_lock);
-
- offset = CGLV + gpio_num / 8;
- bit = gpio_num % 8;
-
- curr_vals = inb(gpio_ba + offset);
-
- if (val)
- outb(curr_vals | (1 << bit), gpio_ba + offset);
- else
- outb((curr_vals & ~(1 << bit)), gpio_ba + offset);
- spin_unlock(&gpio_lock);
+ if (gpio >= sch->resume_base)
+ gpio -= sch->resume_base;
+ return gpio % 8;
}
-static int sch_gpio_core_direction_out(struct gpio_chip *gc,
- unsigned gpio_num, int val)
+static void sch_gpio_enable(struct sch_gpio *sch, unsigned gpio)
{
- u8 curr_dirs;
unsigned short offset, bit;
+ u8 enable;
- spin_lock(&gpio_lock);
+ spin_lock(&sch->lock);
- offset = CGIO + gpio_num / 8;
- bit = gpio_num % 8;
-
- curr_dirs = inb(gpio_ba + offset);
- if (curr_dirs & (1 << bit))
- outb(curr_dirs & ~(1 << bit), gpio_ba + offset);
+ offset = sch_gpio_offset(sch, gpio, GEN);
+ bit = sch_gpio_bit(sch, gpio);
- spin_unlock(&gpio_lock);
+ enable = inb(sch->iobase + offset);
+ if (!(enable & (1 << bit)))
+ outb(enable | (1 << bit), sch->iobase + offset);
- /*
- * according to the datasheet, writing to the level register has no
- * effect when GPIO is programmed as input.
- * Actually the the level register is read-only when configured as input.
- * Thus presetting the output level before switching to output is _NOT_ possible.
- * Hence we set the level after configuring the GPIO as output.
- * But we cannot prevent a short low pulse if direction is set to high
- * and an external pull-up is connected.
- */
- sch_gpio_core_set(gc, gpio_num, val);
- return 0;
+ spin_unlock(&sch->lock);
}
-static struct gpio_chip sch_gpio_core = {
- .label = "sch_gpio_core",
- .owner = THIS_MODULE,
- .direction_input = sch_gpio_core_direction_in,
- .get = sch_gpio_core_get,
- .direction_output = sch_gpio_core_direction_out,
- .set = sch_gpio_core_set,
-};
-
-static int sch_gpio_resume_direction_in(struct gpio_chip *gc,
- unsigned gpio_num)
+static int sch_gpio_direction_in(struct gpio_chip *gc, unsigned gpio_num)
{
+ struct sch_gpio *sch = to_sch_gpio(gc);
u8 curr_dirs;
unsigned short offset, bit;
- spin_lock(&gpio_lock);
+ spin_lock(&sch->lock);
- offset = RGIO + gpio_num / 8;
- bit = gpio_num % 8;
+ offset = sch_gpio_offset(sch, gpio_num, GIO);
+ bit = sch_gpio_bit(sch, gpio_num);
- curr_dirs = inb(gpio_ba + offset);
+ curr_dirs = inb(sch->iobase + offset);
if (!(curr_dirs & (1 << bit)))
- outb(curr_dirs | (1 << bit), gpio_ba + offset);
+ outb(curr_dirs | (1 << bit), sch->iobase + offset);
- spin_unlock(&gpio_lock);
+ spin_unlock(&sch->lock);
return 0;
}
-static int sch_gpio_resume_get(struct gpio_chip *gc, unsigned gpio_num)
+static int sch_gpio_get(struct gpio_chip *gc, unsigned gpio_num)
{
+ struct sch_gpio *sch = to_sch_gpio(gc);
+ int res;
unsigned short offset, bit;
- offset = RGLV + gpio_num / 8;
- bit = gpio_num % 8;
+ offset = sch_gpio_offset(sch, gpio_num, GLV);
+ bit = sch_gpio_bit(sch, gpio_num);
+
+ res = !!(inb(sch->iobase + offset) & (1 << bit));
- return !!(inb(gpio_ba + offset) & (1 << bit));
+ return res;
}
-static void sch_gpio_resume_set(struct gpio_chip *gc,
- unsigned gpio_num, int val)
+static void sch_gpio_set(struct gpio_chip *gc, unsigned gpio_num, int val)
{
+ struct sch_gpio *sch = to_sch_gpio(gc);
u8 curr_vals;
unsigned short offset, bit;
- spin_lock(&gpio_lock);
+ spin_lock(&sch->lock);
- offset = RGLV + gpio_num / 8;
- bit = gpio_num % 8;
+ offset = sch_gpio_offset(sch, gpio_num, GLV);
+ bit = sch_gpio_bit(sch, gpio_num);
- curr_vals = inb(gpio_ba + offset);
+ curr_vals = inb(sch->iobase + offset);
if (val)
- outb(curr_vals | (1 << bit), gpio_ba + offset);
+ outb(curr_vals | (1 << bit), sch->iobase + offset);
else
- outb((curr_vals & ~(1 << bit)), gpio_ba + offset);
+ outb((curr_vals & ~(1 << bit)), sch->iobase + offset);
- spin_unlock(&gpio_lock);
+ spin_unlock(&sch->lock);
}
-static int sch_gpio_resume_direction_out(struct gpio_chip *gc,
- unsigned gpio_num, int val)
+static int sch_gpio_direction_out(struct gpio_chip *gc, unsigned gpio_num,
+ int val)
{
+ struct sch_gpio *sch = to_sch_gpio(gc);
u8 curr_dirs;
unsigned short offset, bit;
- offset = RGIO + gpio_num / 8;
- bit = gpio_num % 8;
+ spin_lock(&sch->lock);
- spin_lock(&gpio_lock);
+ offset = sch_gpio_offset(sch, gpio_num, GIO);
+ bit = sch_gpio_bit(sch, gpio_num);
- curr_dirs = inb(gpio_ba + offset);
+ curr_dirs = inb(sch->iobase + offset);
if (curr_dirs & (1 << bit))
- outb(curr_dirs & ~(1 << bit), gpio_ba + offset);
+ outb(curr_dirs & ~(1 << bit), sch->iobase + offset);
- spin_unlock(&gpio_lock);
+ spin_unlock(&sch->lock);
/*
- * according to the datasheet, writing to the level register has no
- * effect when GPIO is programmed as input.
- * Actually the the level register is read-only when configured as input.
- * Thus presetting the output level before switching to output is _NOT_ possible.
- * Hence we set the level after configuring the GPIO as output.
- * But we cannot prevent a short low pulse if direction is set to high
- * and an external pull-up is connected.
- */
- sch_gpio_resume_set(gc, gpio_num, val);
+ * according to the datasheet, writing to the level register has no
+ * effect when GPIO is programmed as input.
+ * Actually the the level register is read-only when configured as input.
+ * Thus presetting the output level before switching to output is _NOT_ possible.
+ * Hence we set the level after configuring the GPIO as output.
+ * But we cannot prevent a short low pulse if direction is set to high
+ * and an external pull-up is connected.
+ */
+ sch_gpio_set(gc, gpio_num, val);
return 0;
}
-static struct gpio_chip sch_gpio_resume = {
- .label = "sch_gpio_resume",
+static struct gpio_chip sch_gpio_chip = {
+ .label = "sch_gpio",
.owner = THIS_MODULE,
- .direction_input = sch_gpio_resume_direction_in,
- .get = sch_gpio_resume_get,
- .direction_output = sch_gpio_resume_direction_out,
- .set = sch_gpio_resume_set,
+ .direction_input = sch_gpio_direction_in,
+ .get = sch_gpio_get,
+ .direction_output = sch_gpio_direction_out,
+ .set = sch_gpio_set,
};
static int sch_gpio_probe(struct platform_device *pdev)
{
+ struct sch_gpio *sch;
struct resource *res;
- int err, id;
- id = pdev->id;
- if (!id)
- return -ENODEV;
+ sch = devm_kzalloc(&pdev->dev, sizeof(*sch), GFP_KERNEL);
+ if (!sch)
+ return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!res)
return -EBUSY;
- if (!request_region(res->start, resource_size(res), pdev->name))
+ if (!devm_request_region(&pdev->dev, res->start, resource_size(res),
+ pdev->name))
return -EBUSY;
- gpio_ba = res->start;
+ spin_lock_init(&sch->lock);
+ sch->iobase = res->start;
+ sch->chip = sch_gpio_chip;
+ sch->chip.label = dev_name(&pdev->dev);
+ sch->chip.dev = &pdev->dev;
- switch (id) {
+ switch (pdev->id) {
case PCI_DEVICE_ID_INTEL_SCH_LPC:
- sch_gpio_core.base = 0;
- sch_gpio_core.ngpio = 10;
- sch_gpio_resume.base = 10;
- sch_gpio_resume.ngpio = 4;
+ sch->core_base = 0;
+ sch->resume_base = 10;
+ sch->chip.ngpio = 14;
+
/*
* GPIO[6:0] enabled by default
* GPIO7 is configured by the CMC as SLPIOVR
* Enable GPIO[9:8] core powered gpios explicitly
*/
- outb(0x3, gpio_ba + CGEN + 1);
+ sch_gpio_enable(sch, 8);
+ sch_gpio_enable(sch, 9);
/*
* SUS_GPIO[2:0] enabled by default
* Enable SUS_GPIO3 resume powered gpio explicitly
*/
- outb(0x8, gpio_ba + RGEN);
+ sch_gpio_enable(sch, 13);
break;
case PCI_DEVICE_ID_INTEL_ITC_LPC:
- sch_gpio_core.base = 0;
- sch_gpio_core.ngpio = 5;
- sch_gpio_resume.base = 5;
- sch_gpio_resume.ngpio = 9;
+ sch->core_base = 0;
+ sch->resume_base = 5;
+ sch->chip.ngpio = 14;
break;
case PCI_DEVICE_ID_INTEL_CENTERTON_ILB:
- sch_gpio_core.base = 0;
- sch_gpio_core.ngpio = 21;
- sch_gpio_resume.base = 21;
- sch_gpio_resume.ngpio = 9;
+ sch->core_base = 0;
+ sch->resume_base = 21;
+ sch->chip.ngpio = 30;
break;
default:
- err = -ENODEV;
- goto err_sch_gpio_core;
+ return -ENODEV;
}
- sch_gpio_core.dev = &pdev->dev;
- sch_gpio_resume.dev = &pdev->dev;
-
- err = gpiochip_add(&sch_gpio_core);
- if (err < 0)
- goto err_sch_gpio_core;
+ platform_set_drvdata(pdev, sch);
- err = gpiochip_add(&sch_gpio_resume);
- if (err < 0)
- goto err_sch_gpio_resume;
-
- return 0;
-
-err_sch_gpio_resume:
- gpiochip_remove(&sch_gpio_core);
-
-err_sch_gpio_core:
- release_region(res->start, resource_size(res));
- gpio_ba = 0;
-
- return err;
+ return gpiochip_add(&sch->chip);
}
static int sch_gpio_remove(struct platform_device *pdev)
{
- struct resource *res;
- if (gpio_ba) {
-
- gpiochip_remove(&sch_gpio_core);
- gpiochip_remove(&sch_gpio_resume);
-
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-
- release_region(res->start, resource_size(res));
- gpio_ba = 0;
- }
+ struct sch_gpio *sch = platform_get_drvdata(pdev);
+ gpiochip_remove(&sch->chip);
return 0;
}
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 05c6275..ba98bb5 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -287,9 +287,45 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
}
}
+int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ if (adev && gpios) {
+ adev->driver_gpios = gpios;
+ return 0;
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(acpi_dev_add_driver_gpios);
+
+static bool acpi_get_driver_gpio_data(struct acpi_device *adev,
+ const char *name, int index,
+ struct acpi_reference_args *args)
+{
+ const struct acpi_gpio_mapping *gm;
+
+ if (!adev->driver_gpios)
+ return false;
+
+ for (gm = adev->driver_gpios; gm->name; gm++)
+ if (!strcmp(name, gm->name) && gm->data && index < gm->size) {
+ const struct acpi_gpio_params *par = gm->data + index;
+
+ args->adev = adev;
+ args->args[0] = par->crs_entry_index;
+ args->args[1] = par->line_index;
+ args->args[2] = par->active_low;
+ args->nargs = 3;
+ return true;
+ }
+
+ return false;
+}
+
struct acpi_gpio_lookup {
struct acpi_gpio_info info;
int index;
+ int pin_index;
struct gpio_desc *desc;
int n;
};
@@ -303,13 +339,24 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
if (lookup->n++ == lookup->index && !lookup->desc) {
const struct acpi_resource_gpio *agpio = &ares->data.gpio;
+ int pin_index = lookup->pin_index;
+
+ if (pin_index >= agpio->pin_table_length)
+ return 1;
lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr,
- agpio->pin_table[0]);
+ agpio->pin_table[pin_index]);
lookup->info.gpioint =
agpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT;
- lookup->info.active_low =
- agpio->polarity == ACPI_ACTIVE_LOW;
+
+ /*
+ * ActiveLow is only specified for GpioInt resource. If
+ * GpioIo is used then the only way to set the flag is
+ * to use _DSD "gpios" property.
+ */
+ if (lookup->info.gpioint)
+ lookup->info.active_low =
+ agpio->polarity == ACPI_ACTIVE_LOW;
}
return 1;
@@ -317,40 +364,79 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
/**
* acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources
- * @dev: pointer to a device to get GPIO from
+ * @adev: pointer to a ACPI device to get GPIO from
+ * @propname: Property name of the GPIO (optional)
* @index: index of GpioIo/GpioInt resource (starting from %0)
* @info: info pointer to fill in (optional)
*
- * Function goes through ACPI resources for @dev and based on @index looks
+ * Function goes through ACPI resources for @adev and based on @index looks
* up a GpioIo/GpioInt resource, translates it to the Linux GPIO descriptor,
* and returns it. @index matches GpioIo/GpioInt resources only so if there
* are total %3 GPIO resources, the index goes from %0 to %2.
*
+ * If @propname is specified the GPIO is looked using device property. In
+ * that case @index is used to select the GPIO entry in the property value
+ * (in case of multiple).
+ *
* If the GPIO cannot be translated or there is an error an ERR_PTR is
* returned.
*
* Note: if the GPIO resource has multiple entries in the pin list, this
* function only returns the first.
*/
-struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
+struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
+ const char *propname, int index,
struct acpi_gpio_info *info)
{
struct acpi_gpio_lookup lookup;
struct list_head resource_list;
- struct acpi_device *adev;
- acpi_handle handle;
+ bool active_low = false;
int ret;
- if (!dev)
- return ERR_PTR(-EINVAL);
-
- handle = ACPI_HANDLE(dev);
- if (!handle || acpi_bus_get_device(handle, &adev))
+ if (!adev)
return ERR_PTR(-ENODEV);
memset(&lookup, 0, sizeof(lookup));
lookup.index = index;
+ if (propname) {
+ struct acpi_reference_args args;
+
+ dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname);
+
+ memset(&args, 0, sizeof(args));
+ ret = acpi_dev_get_property_reference(adev, propname,
+ index, &args);
+ if (ret) {
+ bool found = acpi_get_driver_gpio_data(adev, propname,
+ index, &args);
+ if (!found)
+ return ERR_PTR(ret);
+ }
+
+ /*
+ * The property was found and resolved so need to
+ * lookup the GPIO based on returned args instead.
+ */
+ adev = args.adev;
+ if (args.nargs >= 2) {
+ lookup.index = args.args[0];
+ lookup.pin_index = args.args[1];
+ /*
+ * 3rd argument, if present is used to
+ * specify active_low.
+ */
+ if (args.nargs >= 3)
+ active_low = !!args.args[2];
+ }
+
+ dev_dbg(&adev->dev, "GPIO: _DSD returned %s %zd %llu %llu %llu\n",
+ dev_name(&adev->dev), args.nargs,
+ args.args[0], args.args[1], args.args[2]);
+ } else {
+ dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index);
+ }
+
INIT_LIST_HEAD(&resource_list);
ret = acpi_dev_get_resources(adev, &resource_list, acpi_find_gpio,
&lookup);
@@ -359,8 +445,11 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
acpi_dev_free_resource_list(&resource_list);
- if (lookup.desc && info)
+ if (lookup.desc && info) {
*info = lookup.info;
+ if (active_low)
+ info->active_low = active_low;
+ }
return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT);
}
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e8e98ca..58659db 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1505,14 +1505,36 @@ static struct gpio_desc *acpi_find_gpio(struct device *dev, const char *con_id,
unsigned int idx,
enum gpio_lookup_flags *flags)
{
+ static const char * const suffixes[] = { "gpios", "gpio" };
+ struct acpi_device *adev = ACPI_COMPANION(dev);
struct acpi_gpio_info info;
struct gpio_desc *desc;
+ char propname[32];
+ int i;
- desc = acpi_get_gpiod_by_index(dev, idx, &info);
- if (IS_ERR(desc))
- return desc;
+ /* Try first from _DSD */
+ for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
+ if (con_id && strcmp(con_id, "gpios")) {
+ snprintf(propname, sizeof(propname), "%s-%s",
+ con_id, suffixes[i]);
+ } else {
+ snprintf(propname, sizeof(propname), "%s",
+ suffixes[i]);
+ }
+
+ desc = acpi_get_gpiod_by_index(adev, propname, idx, &info);
+ if (!IS_ERR(desc) || (PTR_ERR(desc) == -EPROBE_DEFER))
+ break;
+ }
- if (info.gpioint && info.active_low)
+ /* Then from plain _CRS GPIOs */
+ if (IS_ERR(desc)) {
+ desc = acpi_get_gpiod_by_index(adev, NULL, idx, &info);
+ if (IS_ERR(desc))
+ return desc;
+ }
+
+ if (info.active_low)
*flags |= GPIO_ACTIVE_LOW;
return desc;
@@ -1713,6 +1735,61 @@ struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
EXPORT_SYMBOL_GPL(__gpiod_get_index);
/**
+ * fwnode_get_named_gpiod - obtain a GPIO from firmware node
+ * @fwnode: handle of the firmware node
+ * @propname: name of the firmware property representing the GPIO
+ *
+ * This function can be used for drivers that get their configuration
+ * from firmware.
+ *
+ * Function properly finds the corresponding GPIO using whatever is the
+ * underlying firmware interface and then makes sure that the GPIO
+ * descriptor is requested before it is returned to the caller.
+ *
+ * In case of error an ERR_PTR() is returned.
+ */
+struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
+ const char *propname)
+{
+ struct gpio_desc *desc = ERR_PTR(-ENODEV);
+ bool active_low = false;
+ int ret;
+
+ if (!fwnode)
+ return ERR_PTR(-EINVAL);
+
+ if (is_of_node(fwnode)) {
+ enum of_gpio_flags flags;
+
+ desc = of_get_named_gpiod_flags(of_node(fwnode), propname, 0,
+ &flags);
+ if (!IS_ERR(desc))
+ active_low = flags & OF_GPIO_ACTIVE_LOW;
+ } else if (is_acpi_node(fwnode)) {
+ struct acpi_gpio_info info;
+
+ desc = acpi_get_gpiod_by_index(acpi_node(fwnode), propname, 0,
+ &info);
+ if (!IS_ERR(desc))
+ active_low = info.active_low;
+ }
+
+ if (IS_ERR(desc))
+ return desc;
+
+ ret = gpiod_request(desc, NULL);
+ if (ret)
+ return ERR_PTR(ret);
+
+ /* Only value flag can be set from both DT and ACPI is active_low */
+ if (active_low)
+ set_bit(FLAG_ACTIVE_LOW, &desc->flags);
+
+ return desc;
+}
+EXPORT_SYMBOL_GPL(fwnode_get_named_gpiod);
+
+/**
* gpiod_get_index_optional - obtain an optional GPIO from a multi-index GPIO
* function
* @dev: GPIO consumer, can be NULL for system-global GPIOs
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 9db2b6a..e3a5211 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -34,7 +34,8 @@ void acpi_gpiochip_remove(struct gpio_chip *chip);
void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
-struct gpio_desc *acpi_get_gpiod_by_index(struct device *dev, int index,
+struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
+ const char *propname, int index,
struct acpi_gpio_info *info);
#else
static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
@@ -47,8 +48,8 @@ static inline void
acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
static inline struct gpio_desc *
-acpi_get_gpiod_by_index(struct device *dev, int index,
- struct acpi_gpio_info *info)
+acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname,
+ int index, struct acpi_gpio_info *info)
{
return ERR_PTR(-ENOSYS);
}
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 432d363..c9c1c8c 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -23,10 +23,9 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/gpio_keys.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_gpio.h>
+#include <linux/property.h>
#define DRV_NAME "gpio-keys-polled"
@@ -51,15 +50,14 @@ static void gpio_keys_polled_check_state(struct input_dev *input,
int state;
if (bdata->can_sleep)
- state = !!gpio_get_value_cansleep(button->gpio);
+ state = !!gpiod_get_value_cansleep(button->gpiod);
else
- state = !!gpio_get_value(button->gpio);
+ state = !!gpiod_get_value(button->gpiod);
if (state != bdata->last_state) {
unsigned int type = button->type ?: EV_KEY;
- input_event(input, type, button->code,
- !!(state ^ button->active_low));
+ input_event(input, type, button->code, state);
input_sync(input);
bdata->count = 0;
bdata->last_state = state;
@@ -102,21 +100,15 @@ static void gpio_keys_polled_close(struct input_polled_dev *dev)
pdata->disable(bdev->dev);
}
-#ifdef CONFIG_OF
static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct device *dev)
{
- struct device_node *node, *pp;
struct gpio_keys_platform_data *pdata;
struct gpio_keys_button *button;
+ struct fwnode_handle *child;
int error;
int nbuttons;
- int i;
-
- node = dev->of_node;
- if (!node)
- return NULL;
- nbuttons = of_get_child_count(node);
+ nbuttons = device_get_child_node_count(dev);
if (nbuttons == 0)
return NULL;
@@ -126,52 +118,44 @@ static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct
return ERR_PTR(-ENOMEM);
pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
- pdata->nbuttons = nbuttons;
- pdata->rep = !!of_get_property(node, "autorepeat", NULL);
- of_property_read_u32(node, "poll-interval", &pdata->poll_interval);
+ pdata->rep = device_property_present(dev, "autorepeat");
+ device_property_read_u32(dev, "poll-interval", &pdata->poll_interval);
- i = 0;
- for_each_child_of_node(node, pp) {
- int gpio;
- enum of_gpio_flags flags;
+ device_for_each_child_node(dev, child) {
+ struct gpio_desc *desc;
- if (!of_find_property(pp, "gpios", NULL)) {
- pdata->nbuttons--;
- dev_warn(dev, "Found button without gpios\n");
- continue;
- }
-
- gpio = of_get_gpio_flags(pp, 0, &flags);
- if (gpio < 0) {
- error = gpio;
+ desc = devm_get_gpiod_from_child(dev, child);
+ if (IS_ERR(desc)) {
+ error = PTR_ERR(desc);
if (error != -EPROBE_DEFER)
dev_err(dev,
"Failed to get gpio flags, error: %d\n",
error);
+ fwnode_handle_put(child);
return ERR_PTR(error);
}
- button = &pdata->buttons[i++];
-
- button->gpio = gpio;
- button->active_low = flags & OF_GPIO_ACTIVE_LOW;
+ button = &pdata->buttons[pdata->nbuttons++];
+ button->gpiod = desc;
- if (of_property_read_u32(pp, "linux,code", &button->code)) {
- dev_err(dev, "Button without keycode: 0x%x\n",
- button->gpio);
+ if (fwnode_property_read_u32(child, "linux,code", &button->code)) {
+ dev_err(dev, "Button without keycode: %d\n",
+ pdata->nbuttons - 1);
+ fwnode_handle_put(child);
return ERR_PTR(-EINVAL);
}
- button->desc = of_get_property(pp, "label", NULL);
+ fwnode_property_read_string(child, "label", &button->desc);
- if (of_property_read_u32(pp, "linux,input-type", &button->type))
+ if (fwnode_property_read_u32(child, "linux,input-type",
+ &button->type))
button->type = EV_KEY;
- button->wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
+ button->wakeup = fwnode_property_present(child, "gpio-key,wakeup");
- if (of_property_read_u32(pp, "debounce-interval",
- &button->debounce_interval))
+ if (fwnode_property_read_u32(child, "debounce-interval",
+ &button->debounce_interval))
button->debounce_interval = 5;
}
@@ -187,15 +171,6 @@ static const struct of_device_id gpio_keys_polled_of_match[] = {
};
MODULE_DEVICE_TABLE(of, gpio_keys_polled_of_match);
-#else
-
-static inline struct gpio_keys_platform_data *
-gpio_keys_polled_get_devtree_pdata(struct device *dev)
-{
- return NULL;
-}
-#endif
-
static int gpio_keys_polled_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -259,7 +234,6 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
for (i = 0; i < pdata->nbuttons; i++) {
struct gpio_keys_button *button = &pdata->buttons[i];
struct gpio_keys_button_data *bdata = &bdev->data[i];
- unsigned int gpio = button->gpio;
unsigned int type = button->type ?: EV_KEY;
if (button->wakeup) {
@@ -267,15 +241,31 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
return -EINVAL;
}
- error = devm_gpio_request_one(&pdev->dev, gpio, GPIOF_IN,
- button->desc ? : DRV_NAME);
- if (error) {
- dev_err(dev, "unable to claim gpio %u, err=%d\n",
- gpio, error);
- return error;
+ /*
+ * Legacy GPIO number so request the GPIO here and
+ * convert it to descriptor.
+ */
+ if (!button->gpiod && gpio_is_valid(button->gpio)) {
+ unsigned flags = 0;
+
+ if (button->active_low)
+ flags |= GPIOF_ACTIVE_LOW;
+
+ error = devm_gpio_request_one(&pdev->dev, button->gpio,
+ flags, button->desc ? : DRV_NAME);
+ if (error) {
+ dev_err(dev, "unable to claim gpio %u, err=%d\n",
+ button->gpio, error);
+ return error;
+ }
+
+ button->gpiod = gpio_to_desc(button->gpio);
}
- bdata->can_sleep = gpio_cansleep(gpio);
+ if (IS_ERR(button->gpiod))
+ return PTR_ERR(button->gpiod);
+
+ bdata->can_sleep = gpiod_cansleep(button->gpiod);
bdata->last_state = -1;
bdata->threshold = DIV_ROUND_UP(button->debounce_interval,
pdata->poll_interval);
@@ -308,7 +298,7 @@ static struct platform_driver gpio_keys_polled_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(gpio_keys_polled_of_match),
+ .of_match_table = gpio_keys_polled_of_match,
},
};
module_platform_driver(gpio_keys_polled_driver);
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 60558f7..3b92862 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -444,7 +444,10 @@ static struct device_node *dev_get_dev_node(struct device *dev)
while (!pci_is_root_bus(bus))
bus = bus->parent;
- return bus->bridge->parent->of_node;
+ if (bus->bridge->parent)
+ return bus->bridge->parent->of_node;
+ else
+ return NULL;
}
return dev->of_node;
@@ -560,6 +563,9 @@ static struct arm_smmu_device *find_smmu_for_device(struct device *dev)
struct arm_smmu_master *master = NULL;
struct device_node *dev_node = dev_get_dev_node(dev);
+ if (!dev_node)
+ return NULL;
+
spin_lock(&arm_smmu_devices_lock);
list_for_each_entry(smmu, &arm_smmu_devices, list) {
master = find_smmu_master(smmu, dev_node);
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index aa17ae8..d330dab 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -506,9 +506,19 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
isb();
}
+#ifdef CONFIG_ARM_PARKING_PROTOCOL
+static void gic_wakeup_parked_cpu(int cpu)
+{
+ gic_raise_softirq(cpumask_of(cpu), 0);
+}
+#endif
+
static void gic_smp_init(void)
{
set_smp_cross_call(gic_raise_softirq);
+#ifdef CONFIG_ARM_PARKING_PROTOCOL
+ set_smp_boot_wakeup_call(gic_wakeup_parked_cpu);
+#endif
register_cpu_notifier(&gic_cpu_notifier);
}
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 38493ff..26e6773 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -33,12 +33,14 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/acpi.h>
#include <linux/irqdomain.h>
#include <linux/interrupt.h>
#include <linux/percpu.h>
#include <linux/slab.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/irqchip/arm-gic.h>
+#include <linux/irqchip/arm-gic-acpi.h>
#include <asm/cputype.h>
#include <asm/irq.h>
@@ -641,6 +643,13 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
raw_spin_unlock_irqrestore(&irq_controller_lock, flags);
}
+
+#ifdef CONFIG_ARM_PARKING_PROTOCOL
+static void gic_wakeup_parked_cpu(int cpu)
+{
+ gic_raise_softirq(cpumask_of(cpu), GIC_DIST_SOFTINT_NSATT);
+}
+#endif
#endif
#ifdef CONFIG_BL_SWITCHER
@@ -996,6 +1005,9 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
#ifdef CONFIG_SMP
set_smp_cross_call(gic_raise_softirq);
register_cpu_notifier(&gic_cpu_notifier);
+#ifdef CONFIG_ARM_PARKING_PROTOCOL
+ set_smp_boot_wakeup_call(gic_wakeup_parked_cpu);
+#endif
#endif
set_handle_irq(gic_handle_irq);
}
@@ -1048,3 +1060,107 @@ IRQCHIP_DECLARE(msm_8660_qgic, "qcom,msm-8660-qgic", gic_of_init);
IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init);
#endif
+
+#ifdef CONFIG_ACPI
+static phys_addr_t dist_phy_base, cpu_phy_base;
+static int cpu_base_assigned;
+
+static int __init
+gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_interrupt *processor;
+ phys_addr_t gic_cpu_base;
+
+ processor = (struct acpi_madt_generic_interrupt *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ /*
+ * There is no support for non-banked GICv1/2 register in ACPI spec.
+ * All CPU interface addresses have to be the same.
+ */
+ gic_cpu_base = processor->base_address;
+ if (cpu_base_assigned && gic_cpu_base != cpu_phy_base)
+ return -EFAULT;
+
+ cpu_phy_base = gic_cpu_base;
+ cpu_base_assigned = 1;
+ return 0;
+}
+
+static int __init
+gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_generic_distributor *dist;
+
+ dist = (struct acpi_madt_generic_distributor *)header;
+
+ if (BAD_MADT_ENTRY(dist, end))
+ return -EINVAL;
+
+ dist_phy_base = dist->base_address;
+ return 0;
+}
+
+int __init
+gic_v2_acpi_init(struct acpi_table_header *table)
+{
+ void __iomem *cpu_base, *dist_base;
+ int count;
+
+ /* Collect CPU base addresses */
+ count = acpi_parse_entries(sizeof(struct acpi_table_madt),
+ gic_acpi_parse_madt_cpu, table,
+ ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0);
+ if (count < 0) {
+ pr_err("Error during GICC entries parsing\n");
+ return -EFAULT;
+ } else if (!count) {
+ pr_err("No valid GICC entries exist\n");
+ return -EINVAL;
+ }
+
+ /*
+ * Find distributor base address. We expect one distributor entry since
+ * ACPI 5.1 spec neither support multi-GIC instances nor GIC cascade.
+ */
+ count = acpi_parse_entries(sizeof(struct acpi_table_madt),
+ gic_acpi_parse_madt_distributor, table,
+ ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, 0);
+ if (count <= 0) {
+ pr_err("Error during GICD entries parsing\n");
+ return -EFAULT;
+ } else if (!count) {
+ pr_err("No valid GICD entries exist\n");
+ return -EINVAL;
+ } else if (count > 1) {
+ pr_err("More than one GICD entry detected\n");
+ return -EINVAL;
+ }
+
+ cpu_base = ioremap(cpu_phy_base, ACPI_GIC_CPU_IF_MEM_SIZE);
+ if (!cpu_base) {
+ pr_err("Unable to map GICC registers\n");
+ return -ENOMEM;
+ }
+
+ dist_base = ioremap(dist_phy_base, ACPI_GICV2_DIST_MEM_SIZE);
+ if (!dist_base) {
+ pr_err("Unable to map GICD registers\n");
+ iounmap(cpu_base);
+ return -ENOMEM;
+ }
+
+ /*
+ * Initialize zero GIC instance (no multi-GIC support). Also, set GIC
+ * as default IRQ domain to allow for GSI registration and GSI to IRQ
+ * number translation (see acpi_register_gsi() and acpi_gsi_to_irq()).
+ */
+ gic_init_bases(0, -1, dist_base, cpu_base, 0, NULL);
+ irq_set_default_host(gic_data[0].domain);
+ return 0;
+}
+#endif
diff --git a/drivers/irqchip/irqchip.c b/drivers/irqchip/irqchip.c
index 0fe2f71..9106c6d 100644
--- a/drivers/irqchip/irqchip.c
+++ b/drivers/irqchip/irqchip.c
@@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/of_irq.h>
#include <linux/irqchip.h>
+#include <linux/irqchip/arm-gic-acpi.h>
/*
* This special of_device_id is the sentinel at the end of the
@@ -26,4 +27,6 @@ extern struct of_device_id __irqchip_of_table[];
void __init irqchip_init(void)
{
of_irq_init(__irqchip_of_table);
+
+ acpi_gic_init();
}
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index b4518c8..b3c5d9d 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -12,25 +12,23 @@
*/
#include <linux/err.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/leds.h>
#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_platform.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
struct gpio_led_data {
struct led_classdev cdev;
- unsigned gpio;
+ struct gpio_desc *gpiod;
struct work_struct work;
u8 new_level;
u8 can_sleep;
- u8 active_low;
u8 blinking;
- int (*platform_gpio_blink_set)(unsigned gpio, int state,
+ int (*platform_gpio_blink_set)(struct gpio_desc *desc, int state,
unsigned long *delay_on, unsigned long *delay_off);
};
@@ -40,12 +38,11 @@ static void gpio_led_work(struct work_struct *work)
container_of(work, struct gpio_led_data, work);
if (led_dat->blinking) {
- led_dat->platform_gpio_blink_set(led_dat->gpio,
- led_dat->new_level,
- NULL, NULL);
+ led_dat->platform_gpio_blink_set(led_dat->gpiod,
+ led_dat->new_level, NULL, NULL);
led_dat->blinking = 0;
} else
- gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level);
+ gpiod_set_value_cansleep(led_dat->gpiod, led_dat->new_level);
}
static void gpio_led_set(struct led_classdev *led_cdev,
@@ -60,9 +57,6 @@ static void gpio_led_set(struct led_classdev *led_cdev,
else
level = 1;
- if (led_dat->active_low)
- level = !level;
-
/* Setting GPIOs with I2C/etc requires a task context, and we don't
* seem to have a reliable way to know if we're already in one; so
* let's just assume the worst.
@@ -72,11 +66,11 @@ static void gpio_led_set(struct led_classdev *led_cdev,
schedule_work(&led_dat->work);
} else {
if (led_dat->blinking) {
- led_dat->platform_gpio_blink_set(led_dat->gpio, level,
+ led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
NULL, NULL);
led_dat->blinking = 0;
} else
- gpio_set_value(led_dat->gpio, level);
+ gpiod_set_value(led_dat->gpiod, level);
}
}
@@ -87,34 +81,49 @@ static int gpio_blink_set(struct led_classdev *led_cdev,
container_of(led_cdev, struct gpio_led_data, cdev);
led_dat->blinking = 1;
- return led_dat->platform_gpio_blink_set(led_dat->gpio, GPIO_LED_BLINK,
+ return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
delay_on, delay_off);
}
static int create_gpio_led(const struct gpio_led *template,
struct gpio_led_data *led_dat, struct device *parent,
- int (*blink_set)(unsigned, int, unsigned long *, unsigned long *))
+ int (*blink_set)(struct gpio_desc *, int, unsigned long *,
+ unsigned long *))
{
int ret, state;
- led_dat->gpio = -1;
+ led_dat->gpiod = template->gpiod;
+ if (!led_dat->gpiod) {
+ /*
+ * This is the legacy code path for platform code that
+ * still uses GPIO numbers. Ultimately we would like to get
+ * rid of this block completely.
+ */
+ unsigned long flags = 0;
+
+ /* skip leds that aren't available */
+ if (!gpio_is_valid(template->gpio)) {
+ dev_info(parent, "Skipping unavailable LED gpio %d (%s)\n",
+ template->gpio, template->name);
+ return 0;
+ }
- /* skip leds that aren't available */
- if (!gpio_is_valid(template->gpio)) {
- dev_info(parent, "Skipping unavailable LED gpio %d (%s)\n",
- template->gpio, template->name);
- return 0;
- }
+ if (template->active_low)
+ flags |= GPIOF_ACTIVE_LOW;
- ret = devm_gpio_request(parent, template->gpio, template->name);
- if (ret < 0)
- return ret;
+ ret = devm_gpio_request_one(parent, template->gpio, flags,
+ template->name);
+ if (ret < 0)
+ return ret;
+
+ led_dat->gpiod = gpio_to_desc(template->gpio);
+ if (IS_ERR(led_dat->gpiod))
+ return PTR_ERR(led_dat->gpiod);
+ }
led_dat->cdev.name = template->name;
led_dat->cdev.default_trigger = template->default_trigger;
- led_dat->gpio = template->gpio;
- led_dat->can_sleep = gpio_cansleep(template->gpio);
- led_dat->active_low = template->active_low;
+ led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
led_dat->blinking = 0;
if (blink_set) {
led_dat->platform_gpio_blink_set = blink_set;
@@ -122,30 +131,24 @@ static int create_gpio_led(const struct gpio_led *template,
}
led_dat->cdev.brightness_set = gpio_led_set;
if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
- state = !!gpio_get_value_cansleep(led_dat->gpio) ^ led_dat->active_low;
+ state = !!gpiod_get_value_cansleep(led_dat->gpiod);
else
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
- ret = gpio_direction_output(led_dat->gpio, led_dat->active_low ^ state);
+ ret = gpiod_direction_output(led_dat->gpiod, state);
if (ret < 0)
return ret;
INIT_WORK(&led_dat->work, gpio_led_work);
- ret = led_classdev_register(parent, &led_dat->cdev);
- if (ret < 0)
- return ret;
-
- return 0;
+ return led_classdev_register(parent, &led_dat->cdev);
}
static void delete_gpio_led(struct gpio_led_data *led)
{
- if (!gpio_is_valid(led->gpio))
- return;
led_classdev_unregister(&led->cdev);
cancel_work_sync(&led->work);
}
@@ -161,40 +164,37 @@ static inline int sizeof_gpio_leds_priv(int num_leds)
(sizeof(struct gpio_led_data) * num_leds);
}
-/* Code to create from OpenFirmware platform devices */
-#ifdef CONFIG_OF_GPIO
-static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev)
+static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.of_node, *child;
+ struct device *dev = &pdev->dev;
+ struct fwnode_handle *child;
struct gpio_leds_priv *priv;
int count, ret;
- /* count LEDs in this device, so we know how much to allocate */
- count = of_get_available_child_count(np);
+ count = device_get_child_node_count(dev);
if (!count)
return ERR_PTR(-ENODEV);
- for_each_available_child_of_node(np, child)
- if (of_get_gpio(child, 0) == -EPROBE_DEFER)
- return ERR_PTR(-EPROBE_DEFER);
-
- priv = devm_kzalloc(&pdev->dev, sizeof_gpio_leds_priv(count),
- GFP_KERNEL);
+ priv = devm_kzalloc(dev, sizeof_gpio_leds_priv(count), GFP_KERNEL);
if (!priv)
return ERR_PTR(-ENOMEM);
- for_each_available_child_of_node(np, child) {
+ device_for_each_child_node(dev, child) {
struct gpio_led led = {};
- enum of_gpio_flags flags;
- const char *state;
-
- led.gpio = of_get_gpio_flags(child, 0, &flags);
- led.active_low = flags & OF_GPIO_ACTIVE_LOW;
- led.name = of_get_property(child, "label", NULL) ? : child->name;
- led.default_trigger =
- of_get_property(child, "linux,default-trigger", NULL);
- state = of_get_property(child, "default-state", NULL);
- if (state) {
+ const char *state = NULL;
+
+ led.gpiod = devm_get_gpiod_from_child(dev, child);
+ if (IS_ERR(led.gpiod)) {
+ fwnode_handle_put(child);
+ goto err;
+ }
+
+ fwnode_property_read_string(child, "label", &led.name);
+ fwnode_property_read_string(child, "linux,default-trigger",
+ &led.default_trigger);
+
+ if (!fwnode_property_read_string(child, "linux,default_state",
+ &state)) {
if (!strcmp(state, "keep"))
led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
else if (!strcmp(state, "on"))
@@ -203,13 +203,13 @@ static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev)
led.default_state = LEDS_GPIO_DEFSTATE_OFF;
}
- if (of_get_property(child, "retain-state-suspended", NULL))
+ if (fwnode_property_present(child, "retain-state-suspended"))
led.retain_state_suspended = 1;
ret = create_gpio_led(&led, &priv->leds[priv->num_leds++],
- &pdev->dev, NULL);
+ dev, NULL);
if (ret < 0) {
- of_node_put(child);
+ fwnode_handle_put(child);
goto err;
}
}
@@ -228,12 +228,6 @@ static const struct of_device_id of_gpio_leds_match[] = {
};
MODULE_DEVICE_TABLE(of, of_gpio_leds_match);
-#else /* CONFIG_OF_GPIO */
-static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev)
-{
- return ERR_PTR(-ENODEV);
-}
-#endif /* CONFIG_OF_GPIO */
static int gpio_led_probe(struct platform_device *pdev)
{
@@ -261,7 +255,7 @@ static int gpio_led_probe(struct platform_device *pdev)
}
}
} else {
- priv = gpio_leds_create_of(pdev);
+ priv = gpio_leds_create(pdev);
if (IS_ERR(priv))
return PTR_ERR(priv);
}
@@ -288,7 +282,7 @@ static struct platform_driver gpio_led_driver = {
.driver = {
.name = "leds-gpio",
.owner = THIS_MODULE,
- .of_match_table = of_match_ptr(of_gpio_leds_match),
+ .of_match_table = of_gpio_leds_match,
},
};
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index 634f729..0a1af93 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -18,7 +18,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/eeprom.h>
-#include <linux/of.h>
+#include <linux/property.h>
/*
* NOTE: this is an *EEPROM* driver. The vagaries of product naming
@@ -301,35 +301,33 @@ static ssize_t at25_mem_write(struct memory_accessor *mem, const char *buf,
/*-------------------------------------------------------------------------*/
-static int at25_np_to_chip(struct device *dev,
- struct device_node *np,
- struct spi_eeprom *chip)
+static int at25_fw_to_chip(struct device *dev, struct spi_eeprom *chip)
{
u32 val;
memset(chip, 0, sizeof(*chip));
- strncpy(chip->name, np->name, sizeof(chip->name));
+ strncpy(chip->name, "at25", sizeof(chip->name));
- if (of_property_read_u32(np, "size", &val) == 0 ||
- of_property_read_u32(np, "at25,byte-len", &val) == 0) {
+ if (device_property_read_u32(dev, "size", &val) == 0 ||
+ device_property_read_u32(dev, "at25,byte-len", &val) == 0) {
chip->byte_len = val;
} else {
dev_err(dev, "Error: missing \"size\" property\n");
return -ENODEV;
}
- if (of_property_read_u32(np, "pagesize", &val) == 0 ||
- of_property_read_u32(np, "at25,page-size", &val) == 0) {
+ if (device_property_read_u32(dev, "pagesize", &val) == 0 ||
+ device_property_read_u32(dev, "at25,page-size", &val) == 0) {
chip->page_size = (u16)val;
} else {
dev_err(dev, "Error: missing \"pagesize\" property\n");
return -ENODEV;
}
- if (of_property_read_u32(np, "at25,addr-mode", &val) == 0) {
+ if (device_property_read_u32(dev, "at25,addr-mode", &val) == 0) {
chip->flags = (u16)val;
} else {
- if (of_property_read_u32(np, "address-width", &val)) {
+ if (device_property_read_u32(dev, "address-width", &val)) {
dev_err(dev,
"Error: missing \"address-width\" property\n");
return -ENODEV;
@@ -350,7 +348,7 @@ static int at25_np_to_chip(struct device *dev,
val);
return -ENODEV;
}
- if (of_find_property(np, "read-only", NULL))
+ if (device_property_present(dev, "read-only"))
chip->flags |= EE_READONLY;
}
return 0;
@@ -360,21 +358,15 @@ static int at25_probe(struct spi_device *spi)
{
struct at25_data *at25 = NULL;
struct spi_eeprom chip;
- struct device_node *np = spi->dev.of_node;
int err;
int sr;
int addrlen;
/* Chip description */
if (!spi->dev.platform_data) {
- if (np) {
- err = at25_np_to_chip(&spi->dev, np, &chip);
- if (err)
- return err;
- } else {
- dev_err(&spi->dev, "Error: no chip description\n");
- return -ENODEV;
- }
+ err = at25_fw_to_chip(&spi->dev, &chip);
+ if (err)
+ return err;
} else
chip = *(struct spi_eeprom *)spi->dev.platform_data;
diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig
index 8319c99..6feb6ef3 100644
--- a/drivers/net/ethernet/amd/Kconfig
+++ b/drivers/net/ethernet/amd/Kconfig
@@ -179,7 +179,7 @@ config SUNLANCE
config AMD_XGBE
tristate "AMD 10GbE Ethernet driver"
- depends on OF_NET
+ depends on OF_NET || ACPI
select PHYLIB
select AMD_XGBE_PHY
select BITREVERSE
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
index 9da3a03..a34cad2 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
@@ -130,7 +130,7 @@ static unsigned int xgbe_usec_to_riwt(struct xgbe_prv_data *pdata,
DBGPR("-->xgbe_usec_to_riwt\n");
- rate = clk_get_rate(pdata->sysclk);
+ rate = pdata->sysclk_rate;
/*
* Convert the input usec value to the watchdog timer value. Each
@@ -153,7 +153,7 @@ static unsigned int xgbe_riwt_to_usec(struct xgbe_prv_data *pdata,
DBGPR("-->xgbe_riwt_to_usec\n");
- rate = clk_get_rate(pdata->sysclk);
+ rate = pdata->sysclk_rate;
/*
* Convert the input watchdog timer value to the usec value. Each
@@ -695,6 +695,18 @@ static int xgbe_read_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
else
mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
+ if (XGBE_SEATTLE_A0) {
+ /* The PCS implementation has reversed the devices in
+ * package registers so we need to change 05 to 06 and
+ * 06 to 05 if being read (these registers are readonly
+ * so no need to do this in the write function)
+ */
+ if ((mmd_address & 0xffff) == 0x05)
+ mmd_address = (mmd_address & ~0xffff) | 0x06;
+ else if ((mmd_address & 0xffff) == 0x06)
+ mmd_address = (mmd_address & ~0xffff) | 0x05;
+ }
+
/* The PCS registers are accessed using mmio. The underlying APB3
* management interface uses indirect addressing to access the MMD
* register sets. This requires accessing of the PCS register in two
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 2349ea9..a04b18b 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -425,6 +425,9 @@ void xgbe_get_all_hw_features(struct xgbe_prv_data *pdata)
hw_feat->rx_ch_cnt++;
hw_feat->tx_ch_cnt++;
+ /* A0 does not support NUMTC, hardcode it for now */
+ hw_feat->tc_cnt = XGBE_TC_CNT;
+
DBGPR("<--xgbe_get_all_hw_features\n");
}
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
index f5a8fa0..338c0ed 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
@@ -124,6 +124,7 @@
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/clk.h>
+#include <linux/acpi.h>
#include "xgbe.h"
#include "xgbe-common.h"
@@ -215,6 +216,205 @@ static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata)
xgbe_init_function_ptrs_desc(&pdata->desc_if);
}
+static int xgbe_map_resources(struct xgbe_prv_data *pdata)
+{
+ struct platform_device *pdev = pdata->pdev;
+ struct device *dev = pdata->dev;
+ struct resource *res;
+
+ /* Obtain the mmio areas for the device */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ pdata->xgmac_regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pdata->xgmac_regs)) {
+ dev_err(dev, "xgmac ioremap failed\n");
+ return PTR_ERR(pdata->xgmac_regs);
+ }
+ DBGPR(" xgmac_regs = %p\n", pdata->xgmac_regs);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ pdata->xpcs_regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pdata->xpcs_regs)) {
+ dev_err(dev, "xpcs ioremap failed\n");
+ return PTR_ERR(pdata->xpcs_regs);
+ }
+ DBGPR(" xpcs_regs = %p\n", pdata->xpcs_regs);
+
+ return 0;
+}
+
+#ifdef CONFIG_ACPI
+static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
+{
+ struct acpi_device *adev = pdata->adev;
+ struct device *dev = pdata->dev;
+ const union acpi_object *property;
+ acpi_status status;
+ u64 cca;
+ unsigned int i;
+ int ret;
+
+ /* Map the memory resources */
+ ret = xgbe_map_resources(pdata);
+ if (ret)
+ return ret;
+
+ /* Obtain the system clock setting */
+ ret = acpi_dev_get_property(adev, XGBE_ACPI_DMA_FREQ, ACPI_TYPE_INTEGER,
+ &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_ACPI_DMA_FREQ);
+ return ret;
+ }
+ pdata->sysclk_rate = property->integer.value;
+
+ /* Obtain the PTP clock setting */
+ ret = acpi_dev_get_property(adev, XGBE_ACPI_PTP_FREQ, ACPI_TYPE_INTEGER,
+ &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_ACPI_PTP_FREQ);
+ return ret;
+ }
+ pdata->ptpclk_rate = property->integer.value;
+
+ /* Retrieve the MAC address */
+ ret = acpi_dev_get_property_array(adev, XGBE_ACPI_MAC_ADDR,
+ ACPI_TYPE_INTEGER, &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_ACPI_MAC_ADDR);
+ return ret;
+ }
+ if (property->package.count != 6) {
+ dev_err(dev, "invalid %s acpi property\n",
+ XGBE_ACPI_MAC_ADDR);
+ return -EINVAL;
+ }
+ for (i = 0; i < property->package.count; i++) {
+ union acpi_object *obj = &property->package.elements[i];
+
+ pdata->mac_addr[i] = (u8)obj->integer.value;
+ }
+ if (!is_valid_ether_addr(pdata->mac_addr)) {
+ dev_err(dev, "invalid %s acpi property\n",
+ XGBE_ACPI_MAC_ADDR);
+ return -EINVAL;
+ }
+
+ /* Retrieve the PHY mode - it must be "xgmii" */
+ ret = acpi_dev_get_property(adev, XGBE_ACPI_PHY_MODE, ACPI_TYPE_STRING,
+ &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_ACPI_PHY_MODE);
+ return ret;
+ }
+ if (strcmp(property->string.pointer,
+ phy_modes(PHY_INTERFACE_MODE_XGMII))) {
+ dev_err(dev, "invalid %s acpi property\n",
+ XGBE_ACPI_PHY_MODE);
+ return -EINVAL;
+ }
+ pdata->phy_mode = PHY_INTERFACE_MODE_XGMII;
+
+#ifndef METHOD_NAME__CCA
+#define METHOD_NAME__CCA "_CCA"
+#endif
+ /* Set the device cache coherency values */
+ if (acpi_has_method(adev->handle, METHOD_NAME__CCA)) {
+ status = acpi_evaluate_integer(adev->handle, METHOD_NAME__CCA,
+ NULL, &cca);
+ if (ACPI_FAILURE(status)) {
+ dev_err(dev, "error obtaining acpi _CCA method\n");
+ return -EINVAL;
+ }
+ } else {
+ cca = 0;
+ }
+
+ if (cca) {
+ pdata->axdomain = XGBE_DMA_OS_AXDOMAIN;
+ pdata->arcache = XGBE_DMA_OS_ARCACHE;
+ pdata->awcache = XGBE_DMA_OS_AWCACHE;
+ } else {
+ pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN;
+ pdata->arcache = XGBE_DMA_SYS_ARCACHE;
+ pdata->awcache = XGBE_DMA_SYS_AWCACHE;
+ }
+
+ return 0;
+}
+#else /* CONFIG_ACPI */
+static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_ACPI */
+
+#ifdef CONFIG_OF
+static int xgbe_of_support(struct xgbe_prv_data *pdata)
+{
+ struct device *dev = pdata->dev;
+ const u8 *mac_addr;
+ int ret;
+
+ /* Map the memory resources */
+ ret = xgbe_map_resources(pdata);
+ if (ret)
+ return ret;
+
+ /* Obtain the system clock setting */
+ pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
+ if (IS_ERR(pdata->sysclk)) {
+ dev_err(dev, "dma devm_clk_get failed\n");
+ return PTR_ERR(pdata->sysclk);
+ }
+ pdata->sysclk_rate = clk_get_rate(pdata->sysclk);
+
+ /* Obtain the PTP clock setting */
+ pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
+ if (IS_ERR(pdata->ptpclk)) {
+ dev_err(dev, "ptp devm_clk_get failed\n");
+ return PTR_ERR(pdata->ptpclk);
+ }
+ pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk);
+
+ /* Retrieve the MAC address */
+ mac_addr = of_get_mac_address(dev->of_node);
+ if (!mac_addr) {
+ dev_err(dev, "invalid mac address for this device\n");
+ return -EINVAL;
+ }
+ memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
+
+ /* Retrieve the PHY mode - it must be "xgmii" */
+ pdata->phy_mode = of_get_phy_mode(dev->of_node);
+ if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) {
+ dev_err(dev, "invalid phy-mode specified for this device\n");
+ return -EINVAL;
+ }
+
+ /* Set the device cache coherency values */
+ if (of_property_read_bool(dev->of_node, "dma-coherent")) {
+ pdata->axdomain = XGBE_DMA_OS_AXDOMAIN;
+ pdata->arcache = XGBE_DMA_OS_ARCACHE;
+ pdata->awcache = XGBE_DMA_OS_AWCACHE;
+ } else {
+ pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN;
+ pdata->arcache = XGBE_DMA_SYS_ARCACHE;
+ pdata->awcache = XGBE_DMA_SYS_AWCACHE;
+ }
+
+ return 0;
+}
+#else /* CONFIG_OF */
+static int xgbe_of_support(struct xgbe_prv_data *pdata)
+{
+ return -EINVAL;
+}
+#endif /*CONFIG_OF */
+
static int xgbe_probe(struct platform_device *pdev)
{
struct xgbe_prv_data *pdata;
@@ -222,8 +422,6 @@ static int xgbe_probe(struct platform_device *pdev)
struct xgbe_desc_if *desc_if;
struct net_device *netdev;
struct device *dev = &pdev->dev;
- struct resource *res;
- const u8 *mac_addr;
int ret;
DBGPR("--> xgbe_probe\n");
@@ -239,6 +437,7 @@ static int xgbe_probe(struct platform_device *pdev)
pdata = netdev_priv(netdev);
pdata->netdev = netdev;
pdata->pdev = pdev;
+ pdata->adev = ACPI_COMPANION(dev);
pdata->dev = dev;
platform_set_drvdata(pdev, netdev);
@@ -264,40 +463,13 @@ static int xgbe_probe(struct platform_device *pdev)
goto err_io;
}
- /* Obtain the system clock setting */
- pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
- if (IS_ERR(pdata->sysclk)) {
- dev_err(dev, "dma devm_clk_get failed\n");
- ret = PTR_ERR(pdata->sysclk);
- goto err_io;
- }
-
- /* Obtain the PTP clock setting */
- pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
- if (IS_ERR(pdata->ptpclk)) {
- dev_err(dev, "ptp devm_clk_get failed\n");
- ret = PTR_ERR(pdata->ptpclk);
- goto err_io;
- }
-
- /* Obtain the mmio areas for the device */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pdata->xgmac_regs = devm_ioremap_resource(dev, res);
- if (IS_ERR(pdata->xgmac_regs)) {
- dev_err(dev, "xgmac ioremap failed\n");
- ret = PTR_ERR(pdata->xgmac_regs);
- goto err_io;
- }
- DBGPR(" xgmac_regs = %p\n", pdata->xgmac_regs);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- pdata->xpcs_regs = devm_ioremap_resource(dev, res);
- if (IS_ERR(pdata->xpcs_regs)) {
- dev_err(dev, "xpcs ioremap failed\n");
- ret = PTR_ERR(pdata->xpcs_regs);
+ /* Obtain device settings */
+ if (pdata->adev && !acpi_disabled)
+ ret = xgbe_acpi_support(pdata);
+ else
+ ret = xgbe_of_support(pdata);
+ if (ret)
goto err_io;
- }
- DBGPR(" xpcs_regs = %p\n", pdata->xpcs_regs);
/* Set the DMA mask */
if (!dev->dma_mask)
@@ -308,23 +480,16 @@ static int xgbe_probe(struct platform_device *pdev)
goto err_io;
}
- if (of_property_read_bool(dev->of_node, "dma-coherent")) {
- pdata->axdomain = XGBE_DMA_OS_AXDOMAIN;
- pdata->arcache = XGBE_DMA_OS_ARCACHE;
- pdata->awcache = XGBE_DMA_OS_AWCACHE;
- } else {
- pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN;
- pdata->arcache = XGBE_DMA_SYS_ARCACHE;
- pdata->awcache = XGBE_DMA_SYS_AWCACHE;
- }
-
+ /* Get the device interrupt */
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(dev, "platform_get_irq failed\n");
goto err_io;
}
+
netdev->irq = ret;
netdev->base_addr = (unsigned long)pdata->xgmac_regs;
+ memcpy(netdev->dev_addr, pdata->mac_addr, netdev->addr_len);
/* Set all the function pointers */
xgbe_init_all_fptrs(pdata);
@@ -337,23 +502,6 @@ static int xgbe_probe(struct platform_device *pdev)
/* Populate the hardware features */
xgbe_get_all_hw_features(pdata);
- /* Retrieve the MAC address */
- mac_addr = of_get_mac_address(dev->of_node);
- if (!mac_addr) {
- dev_err(dev, "invalid mac address for this device\n");
- ret = -EINVAL;
- goto err_io;
- }
- memcpy(netdev->dev_addr, mac_addr, netdev->addr_len);
-
- /* Retrieve the PHY mode - it must be "xgmii" */
- pdata->phy_mode = of_get_phy_mode(dev->of_node);
- if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) {
- dev_err(dev, "invalid phy-mode specified for this device\n");
- ret = -EINVAL;
- goto err_io;
- }
-
/* Set default configuration data */
xgbe_default_config(pdata);
@@ -531,10 +679,22 @@ static int xgbe_resume(struct device *dev)
}
#endif /* CONFIG_PM */
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgbe_acpi_match[] = {
+ { "AMDI8000", 0 },
+ {},
+};
+
+MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match);
+#endif
+
+#ifdef CONFIG_OF
static const struct of_device_id xgbe_of_match[] = {
+ { .compatible = "amd,xgbe-seattle-v0a", },
{ .compatible = "amd,xgbe-seattle-v1a", },
{},
};
+#endif
MODULE_DEVICE_TABLE(of, xgbe_of_match);
static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume);
@@ -542,7 +702,12 @@ static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume);
static struct platform_driver xgbe_driver = {
.driver = {
.name = "amd-xgbe",
+#ifdef CONFIG_ACPI
+ .acpi_match_table = xgbe_acpi_match,
+#endif
+#ifdef CONFIG_OF
.of_match_table = xgbe_of_match,
+#endif
.pm = &xgbe_pm_ops,
},
.probe = xgbe_probe,
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
index 363b210..5d2c89b 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
@@ -119,6 +119,7 @@
#include <linux/mdio.h>
#include <linux/phy.h>
#include <linux/of.h>
+#include <linux/acpi.h>
#include "xgbe.h"
#include "xgbe-common.h"
@@ -205,25 +206,16 @@ void xgbe_dump_phy_registers(struct xgbe_prv_data *pdata)
int xgbe_mdio_register(struct xgbe_prv_data *pdata)
{
- struct device_node *phy_node;
struct mii_bus *mii;
struct phy_device *phydev;
int ret = 0;
DBGPR("-->xgbe_mdio_register\n");
- /* Retrieve the phy-handle */
- phy_node = of_parse_phandle(pdata->dev->of_node, "phy-handle", 0);
- if (!phy_node) {
- dev_err(pdata->dev, "unable to parse phy-handle\n");
- return -EINVAL;
- }
-
mii = mdiobus_alloc();
if (mii == NULL) {
dev_err(pdata->dev, "mdiobus_alloc failed\n");
- ret = -ENOMEM;
- goto err_node_get;
+ return -ENOMEM;
}
/* Register on the MDIO bus (don't probe any PHYs) */
@@ -252,12 +244,9 @@ int xgbe_mdio_register(struct xgbe_prv_data *pdata)
request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT,
MDIO_ID_ARGS(phydev->c45_ids.device_ids[MDIO_MMD_PCS]));
- of_node_get(phy_node);
- phydev->dev.of_node = phy_node;
ret = phy_device_register(phydev);
if (ret) {
dev_err(pdata->dev, "phy_device_register failed\n");
- of_node_put(phy_node);
goto err_phy_device;
}
@@ -283,8 +272,6 @@ int xgbe_mdio_register(struct xgbe_prv_data *pdata)
pdata->phydev = phydev;
- of_node_put(phy_node);
-
DBGPHY_REGS(pdata);
DBGPR("<--xgbe_mdio_register\n");
@@ -300,9 +287,6 @@ err_mdiobus_register:
err_mdiobus_alloc:
mdiobus_free(mii);
-err_node_get:
- of_node_put(phy_node);
-
return ret;
}
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c b/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c
index a1bf9d1c..fa67203 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-ptp.c
@@ -239,7 +239,7 @@ void xgbe_ptp_register(struct xgbe_prv_data *pdata)
snprintf(info->name, sizeof(info->name), "%s",
netdev_name(pdata->netdev));
info->owner = THIS_MODULE;
- info->max_adj = clk_get_rate(pdata->ptpclk);
+ info->max_adj = pdata->ptpclk_rate;
info->adjfreq = xgbe_adjfreq;
info->adjtime = xgbe_adjtime;
info->gettime = xgbe_gettime;
@@ -260,7 +260,7 @@ void xgbe_ptp_register(struct xgbe_prv_data *pdata)
*/
dividend = 50000000;
dividend <<= 32;
- pdata->tstamp_addend = div_u64(dividend, clk_get_rate(pdata->ptpclk));
+ pdata->tstamp_addend = div_u64(dividend, pdata->ptpclk_rate);
/* Setup the timecounter */
cc->read = xgbe_cc_read;
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h
index 789957d..59498eb 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe.h
@@ -172,6 +172,12 @@
#define XGBE_DMA_CLOCK "dma_clk"
#define XGBE_PTP_CLOCK "ptp_clk"
+/* ACPI property names */
+#define XGBE_ACPI_MAC_ADDR "mac-address"
+#define XGBE_ACPI_PHY_MODE "phy-mode"
+#define XGBE_ACPI_DMA_FREQ "amd,dma-freq"
+#define XGBE_ACPI_PTP_FREQ "amd,ptp-freq"
+
/* Timestamp support - values based on 50MHz PTP clock
* 50MHz => 20 nsec
*/
@@ -186,8 +192,11 @@
#define XGBE_FIFO_SIZE_B(x) (x)
#define XGBE_FIFO_SIZE_KB(x) (x * 1024)
+#define XGBE_TC_CNT 2
#define XGBE_TC_MIN_QUANTUM 10
+#define XGBE_SEATTLE_A0 ((read_cpuid_id() & 0x00f0000f) == 0)
+
/* Helper macro for descriptor handling
* Always use XGBE_GET_DESC_DATA to access the descriptor data
* since the index is free-running and needs to be and-ed
@@ -569,6 +578,7 @@ struct xgbe_hw_features {
struct xgbe_prv_data {
struct net_device *netdev;
struct platform_device *pdev;
+ struct acpi_device *adev;
struct device *dev;
/* XGMAC/XPCS related mmio registers */
@@ -649,6 +659,7 @@ struct xgbe_prv_data {
unsigned int phy_rx_pause;
/* Netdev related settings */
+ unsigned char mac_addr[MAX_ADDR_LEN];
netdev_features_t netdev_features;
struct napi_struct napi;
struct xgbe_mmc_stats mmc_stats;
@@ -658,7 +669,9 @@ struct xgbe_prv_data {
/* Device clocks */
struct clk *sysclk;
+ unsigned long sysclk_rate;
struct clk *ptpclk;
+ unsigned long ptpclk_rate;
/* Timestamp support */
spinlock_t tstamp_lock;
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
index 7ba83ff..dbbd661 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
@@ -593,9 +593,12 @@ static int xgene_enet_reset(struct xgene_enet_pdata *pdata)
if (!xgene_ring_mgr_init(pdata))
return -ENODEV;
- clk_prepare_enable(pdata->clk);
- clk_disable_unprepare(pdata->clk);
- clk_prepare_enable(pdata->clk);
+ if (pdata->clk) {
+ clk_prepare_enable(pdata->clk);
+ clk_disable_unprepare(pdata->clk);
+ clk_prepare_enable(pdata->clk);
+ }
+
xgene_enet_ecc_init(pdata);
xgene_enet_config_ring_if_assoc(pdata);
@@ -663,15 +666,20 @@ static int xgene_enet_phy_connect(struct net_device *ndev)
struct phy_device *phy_dev;
struct device *dev = &pdata->pdev->dev;
- phy_np = of_parse_phandle(dev->of_node, "phy-handle", 0);
- if (!phy_np) {
- netdev_dbg(ndev, "No phy-handle found\n");
- return -ENODEV;
+ if (dev->of_node) {
+ phy_np = of_parse_phandle(dev->of_node, "phy-handle", 0);
+ if (!phy_np) {
+ netdev_dbg(ndev, "No phy-handle found in DT\n");
+ return -ENODEV;
+ }
+ pdata->phy_dev = of_phy_find_device(phy_np);
}
- phy_dev = of_phy_connect(ndev, phy_np, &xgene_enet_adjust_link,
- 0, pdata->phy_mode);
- if (!phy_dev) {
+ phy_dev = pdata->phy_dev;
+
+ if (phy_dev == NULL ||
+ phy_connect_direct(ndev, phy_dev, &xgene_enet_adjust_link,
+ pdata->phy_mode)) {
netdev_err(ndev, "Could not connect to PHY\n");
return -ENODEV;
}
@@ -681,11 +689,52 @@ static int xgene_enet_phy_connect(struct net_device *ndev)
~SUPPORTED_100baseT_Half &
~SUPPORTED_1000baseT_Half;
phy_dev->advertising = phy_dev->supported;
- pdata->phy_dev = phy_dev;
return 0;
}
+#ifdef CONFIG_ACPI
+static int xgene_acpi_mdiobus_register(struct xgene_enet_pdata *pdata,
+ struct mii_bus *mdio)
+{
+ struct device *dev = &pdata->pdev->dev;
+ struct phy_device *phy;
+ int i, ret;
+ u32 phy_id;
+
+ /* Mask out all PHYs from auto probing. */
+ mdio->phy_mask = ~0;
+
+ /* Clear all the IRQ properties */
+ if (mdio->irq)
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ mdio->irq[i] = PHY_POLL;
+
+ /* Register the MDIO bus */
+ ret = mdiobus_register(mdio);
+ if (ret)
+ return ret;
+
+ ret = device_property_read_u32(dev, "phy-channel", &phy_id);
+ if (ret)
+ return -EINVAL;
+
+ phy = get_phy_device(mdio, phy_id, true);
+ if (!phy || IS_ERR(phy))
+ return -EIO;
+
+ ret = phy_device_register(phy);
+ if (ret)
+ phy_device_free(phy);
+ else
+ pdata->phy_dev = phy;
+
+ return ret;
+}
+#else
+#define xgene_acpi_mdiobus_register(a, b) -1
+#endif
+
int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata)
{
struct net_device *ndev = pdata->ndev;
@@ -702,7 +751,7 @@ int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata)
}
}
- if (!mdio_np) {
+ if (dev->of_node && !mdio_np) {
netdev_dbg(ndev, "No mdio node in the dts\n");
return -ENXIO;
}
@@ -720,7 +769,10 @@ int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata)
mdio_bus->priv = pdata;
mdio_bus->parent = &ndev->dev;
- ret = of_mdiobus_register(mdio_bus, mdio_np);
+ if (dev->of_node)
+ ret = of_mdiobus_register(mdio_bus, mdio_np);
+ else
+ ret = xgene_acpi_mdiobus_register(pdata, mdio_bus);
if (ret) {
netdev_err(ndev, "Failed to register MDIO bus\n");
mdiobus_free(mdio_bus);
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index 1236696..f66598a 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
@@ -746,6 +746,42 @@ static const struct net_device_ops xgene_ndev_ops = {
.ndo_set_mac_address = xgene_enet_set_mac_address,
};
+#ifdef CONFIG_ACPI
+static int acpi_get_mac_address(struct device *dev,
+ unsigned char *addr)
+{
+ int ret;
+
+ ret = device_property_read_u8_array(dev, "mac-address", addr, 6);
+ if (ret)
+ return 0;
+
+ return 6;
+}
+
+static int acpi_get_phy_mode(struct device *dev)
+{
+ int i, ret, phy_mode;
+ char *modestr;
+
+ ret = device_property_read_string(dev, "phy-mode", &modestr);
+ if (ret)
+ return -1;
+
+ phy_mode = -1;
+ for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) {
+ if (!strcasecmp(modestr, phy_modes(i))) {
+ phy_mode = i;
+ break;
+ }
+ }
+ return phy_mode;
+}
+#else
+#define acpi_get_mac_address(a, b, c) 0
+#define acpi_get_phy_mode(a) -1
+#endif
+
static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
{
struct platform_device *pdev;
@@ -761,6 +797,8 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
ndev = pdata->ndev;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "enet_csr");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "Resource enet_csr not defined\n");
return -ENODEV;
@@ -772,6 +810,8 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_csr");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_err(dev, "Resource ring_csr not defined\n");
return -ENODEV;
@@ -783,6 +823,8 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_cmd");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
if (!res) {
dev_err(dev, "Resource ring_cmd not defined\n");
return -ENODEV;
@@ -804,11 +846,13 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
mac = of_get_mac_address(dev->of_node);
if (mac)
memcpy(ndev->dev_addr, mac, ndev->addr_len);
- else
+ else if (!acpi_get_mac_address(dev, ndev->dev_addr))
eth_hw_addr_random(ndev);
memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
pdata->phy_mode = of_get_phy_mode(pdev->dev.of_node);
+ if (pdata->phy_mode < 0)
+ pdata->phy_mode = acpi_get_phy_mode(dev);
if (pdata->phy_mode < 0) {
dev_err(dev, "Unable to get phy-connection-type\n");
return pdata->phy_mode;
@@ -821,11 +865,12 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
}
pdata->clk = devm_clk_get(&pdev->dev, NULL);
- ret = IS_ERR(pdata->clk);
if (IS_ERR(pdata->clk)) {
- dev_err(&pdev->dev, "can't get clock\n");
- ret = PTR_ERR(pdata->clk);
- return ret;
+ /*
+ * Not necessarily an error. Firmware may have
+ * set up the clock already.
+ */
+ pdata->clk = NULL;
}
base_addr = pdata->base_addr;
@@ -875,7 +920,7 @@ static int xgene_enet_init_hw(struct xgene_enet_pdata *pdata)
pdata->port_ops->cle_bypass(pdata, dst_ring_num, buf_pool->id);
pdata->mac_ops->init(pdata);
- return ret;
+ return 0;
}
static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata)
@@ -936,7 +981,7 @@ static int xgene_enet_probe(struct platform_device *pdev)
goto err;
}
- ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (ret) {
netdev_err(ndev, "No usable DMA configuration\n");
goto err;
@@ -984,6 +1029,14 @@ static int xgene_enet_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgene_enet_acpi_match[] = {
+ { "APMC0D05", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, xgene_enet_acpi_match);
+#endif
+
static struct of_device_id xgene_enet_match[] = {
{.compatible = "apm,xgene-enet",},
{},
@@ -995,6 +1048,7 @@ static struct platform_driver xgene_enet_driver = {
.driver = {
.name = "xgene-enet",
.of_match_table = xgene_enet_match,
+ .acpi_match_table = ACPI_PTR(xgene_enet_acpi_match),
},
.probe = xgene_enet_probe,
.remove = xgene_enet_remove,
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
index f9958fa..0e06cad 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
@@ -31,6 +31,7 @@
#include <linux/prefetch.h>
#include <linux/if_vlan.h>
#include <linux/phy.h>
+#include <linux/acpi.h>
#include "xgene_enet_hw.h"
#define XGENE_DRV_VERSION "v1.0"
diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c
index 6cc3cf6..91c36a2 100644
--- a/drivers/net/ethernet/smsc/smc91x.c
+++ b/drivers/net/ethernet/smsc/smc91x.c
@@ -82,6 +82,7 @@ static const char version[] =
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
+#include <linux/acpi.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
@@ -2467,6 +2468,14 @@ static struct dev_pm_ops smc_drv_pm_ops = {
.resume = smc_drv_resume,
};
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id smc91x_acpi_match[] = {
+ { "LNRO0003", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, smc91x_acpi_match);
+#endif
+
static struct platform_driver smc_driver = {
.probe = smc_drv_probe,
.remove = smc_drv_remove,
@@ -2475,6 +2484,7 @@ static struct platform_driver smc_driver = {
.owner = THIS_MODULE,
.pm = &smc_drv_pm_ops,
.of_match_table = of_match_ptr(smc91x_match),
+ .acpi_match_table = ACPI_PTR(smc91x_acpi_match),
},
};
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 75472cf7..bacafe2 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -26,7 +26,7 @@ config AMD_PHY
config AMD_XGBE_PHY
tristate "Driver for the AMD 10GbE (amd-xgbe) PHYs"
- depends on OF
+ depends on OF || ACPI
---help---
Currently supports the AMD 10GbE PHY
diff --git a/drivers/net/phy/amd-xgbe-phy.c b/drivers/net/phy/amd-xgbe-phy.c
index c456559..d852c6e 100644
--- a/drivers/net/phy/amd-xgbe-phy.c
+++ b/drivers/net/phy/amd-xgbe-phy.c
@@ -74,15 +74,19 @@
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/uaccess.h>
+#include <linux/acpi.h>
+
MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_VERSION("1.0.0-a");
+MODULE_VERSION("0.0.0-a");
MODULE_DESCRIPTION("AMD 10GbE (amd-xgbe) PHY driver");
-#define XGBE_PHY_ID 0x000162d0
+#define XGBE_PHY_ID 0x7996ced0
#define XGBE_PHY_MASK 0xfffffff0
+#define XGBE_PHY_SERDES_RETRY 32
+#define XGBE_PHY_CHANNEL_PROPERTY "amd,serdes-channel"
#define XGBE_PHY_SPEEDSET_PROPERTY "amd,speed-set"
#define XGBE_AN_INT_CMPLT 0x01
@@ -99,11 +103,9 @@ MODULE_DESCRIPTION("AMD 10GbE (amd-xgbe) PHY driver");
#ifndef MDIO_PMA_10GBR_PMD_CTRL
#define MDIO_PMA_10GBR_PMD_CTRL 0x0096
#endif
-
#ifndef MDIO_PMA_10GBR_FEC_CTRL
#define MDIO_PMA_10GBR_FEC_CTRL 0x00ab
#endif
-
#ifndef MDIO_AN_XNP
#define MDIO_AN_XNP 0x0016
#endif
@@ -111,93 +113,14 @@ MODULE_DESCRIPTION("AMD 10GbE (amd-xgbe) PHY driver");
#ifndef MDIO_AN_INTMASK
#define MDIO_AN_INTMASK 0x8001
#endif
-
#ifndef MDIO_AN_INT
#define MDIO_AN_INT 0x8002
#endif
-#ifndef MDIO_AN_KR_CTRL
-#define MDIO_AN_KR_CTRL 0x8003
-#endif
-
#ifndef MDIO_CTRL1_SPEED1G
#define MDIO_CTRL1_SPEED1G (MDIO_CTRL1_SPEED10G & ~BMCR_SPEED100)
#endif
-#ifndef MDIO_KR_CTRL_PDETECT
-#define MDIO_KR_CTRL_PDETECT 0x01
-#endif
-
-/* SerDes integration register offsets */
-#define SIR0_KR_RT_1 0x002c
-#define SIR0_STATUS 0x0040
-#define SIR1_SPEED 0x0000
-
-/* SerDes integration register entry bit positions and sizes */
-#define SIR0_KR_RT_1_RESET_INDEX 11
-#define SIR0_KR_RT_1_RESET_WIDTH 1
-#define SIR0_STATUS_RX_READY_INDEX 0
-#define SIR0_STATUS_RX_READY_WIDTH 1
-#define SIR0_STATUS_TX_READY_INDEX 8
-#define SIR0_STATUS_TX_READY_WIDTH 1
-#define SIR1_SPEED_DATARATE_INDEX 4
-#define SIR1_SPEED_DATARATE_WIDTH 2
-#define SIR1_SPEED_PI_SPD_SEL_INDEX 12
-#define SIR1_SPEED_PI_SPD_SEL_WIDTH 4
-#define SIR1_SPEED_PLLSEL_INDEX 3
-#define SIR1_SPEED_PLLSEL_WIDTH 1
-#define SIR1_SPEED_RATECHANGE_INDEX 6
-#define SIR1_SPEED_RATECHANGE_WIDTH 1
-#define SIR1_SPEED_TXAMP_INDEX 8
-#define SIR1_SPEED_TXAMP_WIDTH 4
-#define SIR1_SPEED_WORDMODE_INDEX 0
-#define SIR1_SPEED_WORDMODE_WIDTH 3
-
-#define SPEED_10000_CDR 0x7
-#define SPEED_10000_PLL 0x1
-#define SPEED_10000_RATE 0x0
-#define SPEED_10000_TXAMP 0xa
-#define SPEED_10000_WORD 0x7
-
-#define SPEED_2500_CDR 0x2
-#define SPEED_2500_PLL 0x0
-#define SPEED_2500_RATE 0x1
-#define SPEED_2500_TXAMP 0xf
-#define SPEED_2500_WORD 0x1
-
-#define SPEED_1000_CDR 0x2
-#define SPEED_1000_PLL 0x0
-#define SPEED_1000_RATE 0x3
-#define SPEED_1000_TXAMP 0xf
-#define SPEED_1000_WORD 0x1
-
-/* SerDes RxTx register offsets */
-#define RXTX_REG20 0x0050
-#define RXTX_REG114 0x01c8
-
-/* SerDes RxTx register entry bit positions and sizes */
-#define RXTX_REG20_BLWC_ENA_INDEX 2
-#define RXTX_REG20_BLWC_ENA_WIDTH 1
-#define RXTX_REG114_PQ_REG_INDEX 9
-#define RXTX_REG114_PQ_REG_WIDTH 7
-
-#define RXTX_10000_BLWC 0
-#define RXTX_10000_PQ 0x1e
-
-#define RXTX_2500_BLWC 1
-#define RXTX_2500_PQ 0xa
-
-#define RXTX_1000_BLWC 1
-#define RXTX_1000_PQ 0xa
-
-/* Bit setting and getting macros
- * The get macro will extract the current bit field value from within
- * the variable
- *
- * The set macro will clear the current bit field value within the
- * variable and then set the bit field of the variable to the
- * specified value
- */
#define GET_BITS(_var, _index, _width) \
(((_var) >> (_index)) & ((0x1 << (_width)) - 1))
@@ -207,70 +130,12 @@ do { \
(_var) |= (((_val) & ((0x1 << (_width)) - 1)) << (_index)); \
} while (0)
-#define XSIR_GET_BITS(_var, _prefix, _field) \
- GET_BITS((_var), \
- _prefix##_##_field##_INDEX, \
- _prefix##_##_field##_WIDTH)
-
-#define XSIR_SET_BITS(_var, _prefix, _field, _val) \
- SET_BITS((_var), \
- _prefix##_##_field##_INDEX, \
- _prefix##_##_field##_WIDTH, (_val))
-
-/* Macros for reading or writing SerDes integration registers
- * The ioread macros will get bit fields or full values using the
- * register definitions formed using the input names
- *
- * The iowrite macros will set bit fields or full values using the
- * register definitions formed using the input names
- */
-#define XSIR0_IOREAD(_priv, _reg) \
- ioread16((_priv)->sir0_regs + _reg)
-
-#define XSIR0_IOREAD_BITS(_priv, _reg, _field) \
- GET_BITS(XSIR0_IOREAD((_priv), _reg), \
- _reg##_##_field##_INDEX, \
- _reg##_##_field##_WIDTH)
-
-#define XSIR0_IOWRITE(_priv, _reg, _val) \
- iowrite16((_val), (_priv)->sir0_regs + _reg)
-
-#define XSIR0_IOWRITE_BITS(_priv, _reg, _field, _val) \
-do { \
- u16 reg_val = XSIR0_IOREAD((_priv), _reg); \
- SET_BITS(reg_val, \
- _reg##_##_field##_INDEX, \
- _reg##_##_field##_WIDTH, (_val)); \
- XSIR0_IOWRITE((_priv), _reg, reg_val); \
-} while (0)
-
-#define XSIR1_IOREAD(_priv, _reg) \
- ioread16((_priv)->sir1_regs + _reg)
-
-#define XSIR1_IOREAD_BITS(_priv, _reg, _field) \
- GET_BITS(XSIR1_IOREAD((_priv), _reg), \
- _reg##_##_field##_INDEX, \
- _reg##_##_field##_WIDTH)
+#define XCMU_IOREAD(_priv, _reg) \
+ ioread16((_priv)->cmu_regs + _reg)
-#define XSIR1_IOWRITE(_priv, _reg, _val) \
- iowrite16((_val), (_priv)->sir1_regs + _reg)
+#define XCMU_IOWRITE(_priv, _reg, _val) \
+ iowrite16((_val), (_priv)->cmu_regs + _reg)
-#define XSIR1_IOWRITE_BITS(_priv, _reg, _field, _val) \
-do { \
- u16 reg_val = XSIR1_IOREAD((_priv), _reg); \
- SET_BITS(reg_val, \
- _reg##_##_field##_INDEX, \
- _reg##_##_field##_WIDTH, (_val)); \
- XSIR1_IOWRITE((_priv), _reg, reg_val); \
-} while (0)
-
-/* Macros for reading or writing SerDes RxTx registers
- * The ioread macros will get bit fields or full values using the
- * register definitions formed using the input names
- *
- * The iowrite macros will set bit fields or full values using the
- * register definitions formed using the input names
- */
#define XRXTX_IOREAD(_priv, _reg) \
ioread16((_priv)->rxtx_regs + _reg)
@@ -291,6 +156,78 @@ do { \
XRXTX_IOWRITE((_priv), _reg, reg_val); \
} while (0)
+/* SerDes CMU register offsets */
+#define CMU_REG15 0x003c
+#define CMU_REG16 0x0040
+
+/* SerDes CMU register entry bit positions and sizes */
+#define CMU_REG16_TX_RATE_CHANGE_BASE 15
+#define CMU_REG16_RX_RATE_CHANGE_BASE 14
+#define CMU_REG16_RATE_CHANGE_DECR 2
+
+
+/* SerDes RxTx register offsets */
+#define RXTX_REG2 0x0008
+#define RXTX_REG3 0x000c
+#define RXTX_REG5 0x0014
+#define RXTX_REG6 0x0018
+#define RXTX_REG20 0x0050
+#define RXTX_REG53 0x00d4
+#define RXTX_REG114 0x01c8
+#define RXTX_REG115 0x01cc
+#define RXTX_REG142 0x0238
+
+/* SerDes RxTx register entry bit positions and sizes */
+#define RXTX_REG2_RESETB_INDEX 15
+#define RXTX_REG2_RESETB_WIDTH 1
+#define RXTX_REG3_TX_DATA_RATE_INDEX 14
+#define RXTX_REG3_TX_DATA_RATE_WIDTH 2
+#define RXTX_REG3_TX_WORD_MODE_INDEX 11
+#define RXTX_REG3_TX_WORD_MODE_WIDTH 3
+#define RXTX_REG5_TXAMP_CNTL_INDEX 7
+#define RXTX_REG5_TXAMP_CNTL_WIDTH 4
+#define RXTX_REG6_RX_DATA_RATE_INDEX 9
+#define RXTX_REG6_RX_DATA_RATE_WIDTH 2
+#define RXTX_REG6_RX_WORD_MODE_INDEX 11
+#define RXTX_REG6_RX_WORD_MODE_WIDTH 3
+#define RXTX_REG20_BLWC_ENA_INDEX 2
+#define RXTX_REG20_BLWC_ENA_WIDTH 1
+#define RXTX_REG53_RX_PLLSELECT_INDEX 15
+#define RXTX_REG53_RX_PLLSELECT_WIDTH 1
+#define RXTX_REG53_TX_PLLSELECT_INDEX 14
+#define RXTX_REG53_TX_PLLSELECT_WIDTH 1
+#define RXTX_REG53_PI_SPD_SEL_CDR_INDEX 10
+#define RXTX_REG53_PI_SPD_SEL_CDR_WIDTH 4
+#define RXTX_REG114_PQ_REG_INDEX 9
+#define RXTX_REG114_PQ_REG_WIDTH 7
+#define RXTX_REG115_FORCE_LAT_CAL_START_INDEX 2
+#define RXTX_REG115_FORCE_LAT_CAL_START_WIDTH 1
+#define RXTX_REG115_FORCE_SUM_CAL_START_INDEX 1
+#define RXTX_REG115_FORCE_SUM_CAL_START_WIDTH 1
+#define RXTX_REG142_SUM_CALIB_DONE_INDEX 15
+#define RXTX_REG142_SUM_CALIB_DONE_WIDTH 1
+#define RXTX_REG142_SUM_CALIB_ERR_INDEX 14
+#define RXTX_REG142_SUM_CALIB_ERR_WIDTH 1
+#define RXTX_REG142_LAT_CALIB_DONE_INDEX 11
+#define RXTX_REG142_LAT_CALIB_DONE_WIDTH 1
+
+#define RXTX_FULL_RATE 0x0
+#define RXTX_HALF_RATE 0x1
+#define RXTX_FIFTH_RATE 0x3
+#define RXTX_66BIT_WORD 0x7
+#define RXTX_10BIT_WORD 0x1
+#define RXTX_10G_TX_AMP 0xa
+#define RXTX_1G_TX_AMP 0xf
+#define RXTX_10G_CDR 0x7
+#define RXTX_1G_CDR 0x2
+#define RXTX_10G_PLL 0x1
+#define RXTX_1G_PLL 0x0
+#define RXTX_10G_PQ 0x1e
+#define RXTX_1G_PQ 0xa
+
+
+DEFINE_SPINLOCK(cmu_lock);
+
enum amd_xgbe_phy_an {
AMD_XGBE_AN_READY = 0,
AMD_XGBE_AN_START,
@@ -316,29 +253,31 @@ enum amd_xgbe_phy_mode {
};
enum amd_xgbe_phy_speedset {
- AMD_XGBE_PHY_SPEEDSET_1000_10000,
+ AMD_XGBE_PHY_SPEEDSET_1000_10000 = 0,
AMD_XGBE_PHY_SPEEDSET_2500_10000,
};
struct amd_xgbe_phy_priv {
struct platform_device *pdev;
+ struct acpi_device *adev;
struct device *dev;
struct phy_device *phydev;
/* SerDes related mmio resources */
struct resource *rxtx_res;
- struct resource *sir0_res;
- struct resource *sir1_res;
+ struct resource *cmu_res;
/* SerDes related mmio registers */
void __iomem *rxtx_regs; /* SerDes Rx/Tx CSRs */
- void __iomem *sir0_regs; /* SerDes integration registers (1/2) */
- void __iomem *sir1_regs; /* SerDes integration registers (2/2) */
+ void __iomem *cmu_regs; /* SerDes CMU CSRs */
+
+ unsigned int serdes_channel;
+ unsigned int speed_set;
/* Maintain link status for re-starting auto-negotiation */
unsigned int link;
- unsigned int speed_set;
+ enum amd_xgbe_phy_mode mode;
/* Auto-negotiation state machine support */
struct mutex an_mutex;
@@ -348,7 +287,6 @@ struct amd_xgbe_phy_priv {
enum amd_xgbe_phy_rx kx_state;
struct work_struct an_work;
struct workqueue_struct *an_workqueue;
- unsigned int parallel_detect;
};
static int amd_xgbe_an_enable_kr_training(struct phy_device *phydev)
@@ -401,33 +339,51 @@ static int amd_xgbe_phy_pcs_power_cycle(struct phy_device *phydev)
static void amd_xgbe_phy_serdes_start_ratechange(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv = phydev->priv;
+ u16 val, mask;
+
+ /* Assert Rx and Tx ratechange in CMU_reg16 */
+ val = XCMU_IOREAD(priv, CMU_REG16);
- /* Assert Rx and Tx ratechange */
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, RATECHANGE, 1);
+ mask = (1 << (CMU_REG16_TX_RATE_CHANGE_BASE -
+ (priv->serdes_channel * CMU_REG16_RATE_CHANGE_DECR))) |
+ (1 << (CMU_REG16_RX_RATE_CHANGE_BASE -
+ (priv->serdes_channel * CMU_REG16_RATE_CHANGE_DECR)));
+ val |= mask;
+
+ XCMU_IOWRITE(priv, CMU_REG16, val);
}
static void amd_xgbe_phy_serdes_complete_ratechange(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv = phydev->priv;
+ u16 val, mask;
unsigned int wait;
- u16 status;
- /* Release Rx and Tx ratechange */
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, RATECHANGE, 0);
+ /* Release Rx and Tx ratechange for proper channel in CMU_reg16 */
+ val = XCMU_IOREAD(priv, CMU_REG16);
+
+ mask = (1 << (CMU_REG16_TX_RATE_CHANGE_BASE -
+ (priv->serdes_channel * CMU_REG16_RATE_CHANGE_DECR))) |
+ (1 << (CMU_REG16_RX_RATE_CHANGE_BASE -
+ (priv->serdes_channel * CMU_REG16_RATE_CHANGE_DECR)));
+ val &= ~mask;
- /* Wait for Rx and Tx ready */
+ XCMU_IOWRITE(priv, CMU_REG16, val);
+
+ /* Wait for Rx and Tx ready in CMU_reg15 */
+ mask = (1 << priv->serdes_channel) |
+ (1 << (priv->serdes_channel + 8));
wait = XGBE_PHY_RATECHANGE_COUNT;
while (wait--) {
- usleep_range(50, 75);
+ udelay(50);
- status = XSIR0_IOREAD(priv, SIR0_STATUS);
- if (XSIR_GET_BITS(status, SIR0_STATUS, RX_READY) &&
- XSIR_GET_BITS(status, SIR0_STATUS, TX_READY))
+ val = XCMU_IOREAD(priv, CMU_REG15);
+ if ((val & mask) == mask)
return;
}
netdev_dbg(phydev->attached_dev, "SerDes rx/tx not ready (%#hx)\n",
- status);
+ val);
}
static int amd_xgbe_phy_xgmii_mode(struct phy_device *phydev)
@@ -435,8 +391,8 @@ static int amd_xgbe_phy_xgmii_mode(struct phy_device *phydev)
struct amd_xgbe_phy_priv *priv = phydev->priv;
int ret;
- /* Enable KR training */
- ret = amd_xgbe_an_enable_kr_training(phydev);
+ /* Disable KR training */
+ ret = amd_xgbe_an_disable_kr_training(phydev);
if (ret < 0)
return ret;
@@ -462,19 +418,32 @@ static int amd_xgbe_phy_xgmii_mode(struct phy_device *phydev)
return ret;
/* Set SerDes to 10G speed */
+ spin_lock(&cmu_lock);
+
amd_xgbe_phy_serdes_start_ratechange(phydev);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_10000_RATE);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_10000_WORD);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_10000_TXAMP);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_10000_PLL);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_10000_CDR);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_DATA_RATE, RXTX_FULL_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_WORD_MODE, RXTX_66BIT_WORD);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_10000_BLWC);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_10000_PQ);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG5, TXAMP_CNTL, RXTX_10G_TX_AMP);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_DATA_RATE, RXTX_FULL_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_WORD_MODE, RXTX_66BIT_WORD);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, 0);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, RX_PLLSELECT, RXTX_10G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, TX_PLLSELECT, RXTX_10G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, PI_SPD_SEL_CDR, RXTX_10G_CDR);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_10G_PQ);
amd_xgbe_phy_serdes_complete_ratechange(phydev);
+ spin_unlock(&cmu_lock);
+
+ priv->mode = AMD_XGBE_MODE_KR;
+
return 0;
}
@@ -510,19 +479,32 @@ static int amd_xgbe_phy_gmii_2500_mode(struct phy_device *phydev)
return ret;
/* Set SerDes to 2.5G speed */
+ spin_lock(&cmu_lock);
+
amd_xgbe_phy_serdes_start_ratechange(phydev);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_2500_RATE);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_2500_WORD);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_2500_TXAMP);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_2500_PLL);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_2500_CDR);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_DATA_RATE, RXTX_HALF_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_WORD_MODE, RXTX_10BIT_WORD);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG5, TXAMP_CNTL, RXTX_1G_TX_AMP);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_DATA_RATE, RXTX_HALF_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_WORD_MODE, RXTX_10BIT_WORD);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_2500_BLWC);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_2500_PQ);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, 1);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, RX_PLLSELECT, RXTX_1G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, TX_PLLSELECT, RXTX_1G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, PI_SPD_SEL_CDR, RXTX_1G_CDR);
+
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_1G_PQ);
amd_xgbe_phy_serdes_complete_ratechange(phydev);
+ spin_unlock(&cmu_lock);
+
+ priv->mode = AMD_XGBE_MODE_KX;
+
return 0;
}
@@ -558,47 +540,33 @@ static int amd_xgbe_phy_gmii_mode(struct phy_device *phydev)
return ret;
/* Set SerDes to 1G speed */
+ spin_lock(&cmu_lock);
+
amd_xgbe_phy_serdes_start_ratechange(phydev);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, DATARATE, SPEED_1000_RATE);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, WORDMODE, SPEED_1000_WORD);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, TXAMP, SPEED_1000_TXAMP);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PLLSEL, SPEED_1000_PLL);
- XSIR1_IOWRITE_BITS(priv, SIR1_SPEED, PI_SPD_SEL, SPEED_1000_CDR);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_DATA_RATE, RXTX_FIFTH_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG3, TX_WORD_MODE, RXTX_10BIT_WORD);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, RXTX_1000_BLWC);
- XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_1000_PQ);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG5, TXAMP_CNTL, RXTX_1G_TX_AMP);
- amd_xgbe_phy_serdes_complete_ratechange(phydev);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_DATA_RATE, RXTX_FIFTH_RATE);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG6, RX_WORD_MODE, RXTX_10BIT_WORD);
- return 0;
-}
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG20, BLWC_ENA, 1);
-static int amd_xgbe_phy_cur_mode(struct phy_device *phydev,
- enum amd_xgbe_phy_mode *mode)
-{
- int ret;
-
- ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
- if (ret < 0)
- return ret;
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, RX_PLLSELECT, RXTX_1G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, TX_PLLSELECT, RXTX_1G_PLL);
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG53, PI_SPD_SEL_CDR, RXTX_1G_CDR);
- if ((ret & MDIO_PCS_CTRL2_TYPE) == MDIO_PCS_CTRL2_10GBR)
- *mode = AMD_XGBE_MODE_KR;
- else
- *mode = AMD_XGBE_MODE_KX;
+ XRXTX_IOWRITE_BITS(priv, RXTX_REG114, PQ_REG, RXTX_1G_PQ);
- return 0;
-}
+ amd_xgbe_phy_serdes_complete_ratechange(phydev);
-static bool amd_xgbe_phy_in_kr_mode(struct phy_device *phydev)
-{
- enum amd_xgbe_phy_mode mode;
+ spin_unlock(&cmu_lock);
- if (amd_xgbe_phy_cur_mode(phydev, &mode))
- return false;
+ priv->mode = AMD_XGBE_MODE_KX;
- return (mode == AMD_XGBE_MODE_KR);
+ return 0;
}
static int amd_xgbe_phy_switch_mode(struct phy_device *phydev)
@@ -607,7 +575,7 @@ static int amd_xgbe_phy_switch_mode(struct phy_device *phydev)
int ret;
/* If we are in KR switch to KX, and vice-versa */
- if (amd_xgbe_phy_in_kr_mode(phydev)) {
+ if (priv->mode == AMD_XGBE_MODE_KR) {
if (priv->speed_set == AMD_XGBE_PHY_SPEEDSET_1000_10000)
ret = amd_xgbe_phy_gmii_mode(phydev);
else
@@ -619,20 +587,15 @@ static int amd_xgbe_phy_switch_mode(struct phy_device *phydev)
return ret;
}
-static int amd_xgbe_phy_set_mode(struct phy_device *phydev,
- enum amd_xgbe_phy_mode mode)
+static enum amd_xgbe_phy_an amd_xgbe_an_switch_mode(struct phy_device *phydev)
{
- enum amd_xgbe_phy_mode cur_mode;
int ret;
- ret = amd_xgbe_phy_cur_mode(phydev, &cur_mode);
- if (ret)
- return ret;
-
- if (mode != cur_mode)
- ret = amd_xgbe_phy_switch_mode(phydev);
+ ret = amd_xgbe_phy_switch_mode(phydev);
+ if (ret < 0)
+ return AMD_XGBE_AN_ERROR;
- return ret;
+ return AMD_XGBE_AN_START;
}
static enum amd_xgbe_phy_an amd_xgbe_an_tx_training(struct phy_device *phydev,
@@ -643,8 +606,8 @@ static enum amd_xgbe_phy_an amd_xgbe_an_tx_training(struct phy_device *phydev,
*state = AMD_XGBE_RX_COMPLETE;
- /* If we're not in KR mode then we're done */
- if (!amd_xgbe_phy_in_kr_mode(phydev))
+ /* If we're in KX mode then we're done */
+ if (priv->mode == AMD_XGBE_MODE_KX)
return AMD_XGBE_AN_EVENT;
/* Enable/Disable FEC */
@@ -672,13 +635,9 @@ static enum amd_xgbe_phy_an amd_xgbe_an_tx_training(struct phy_device *phydev,
if (ret < 0)
return AMD_XGBE_AN_ERROR;
- XSIR0_IOWRITE_BITS(priv, SIR0_KR_RT_1, RESET, 1);
-
ret |= 0x01;
phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, ret);
- XSIR0_IOWRITE_BITS(priv, SIR0_KR_RT_1, RESET, 0);
-
return AMD_XGBE_AN_EVENT;
}
@@ -702,6 +661,7 @@ static enum amd_xgbe_phy_an amd_xgbe_an_tx_xnp(struct phy_device *phydev,
static enum amd_xgbe_phy_an amd_xgbe_an_rx_bpa(struct phy_device *phydev,
enum amd_xgbe_phy_rx *state)
{
+ struct amd_xgbe_phy_priv *priv = phydev->priv;
unsigned int link_support;
int ret, ad_reg, lp_reg;
@@ -711,9 +671,9 @@ static enum amd_xgbe_phy_an amd_xgbe_an_rx_bpa(struct phy_device *phydev,
return AMD_XGBE_AN_ERROR;
/* Check for a supported mode, otherwise restart in a different one */
- link_support = amd_xgbe_phy_in_kr_mode(phydev) ? 0x80 : 0x20;
+ link_support = (priv->mode == AMD_XGBE_MODE_KR) ? 0x80 : 0x20;
if (!(ret & link_support))
- return AMD_XGBE_AN_INCOMPAT_LINK;
+ return amd_xgbe_an_switch_mode(phydev);
/* Check Extended Next Page support */
ad_reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
@@ -754,7 +714,7 @@ static enum amd_xgbe_phy_an amd_xgbe_an_start(struct phy_device *phydev)
int ret;
/* Be sure we aren't looping trying to negotiate */
- if (amd_xgbe_phy_in_kr_mode(phydev)) {
+ if (priv->mode == AMD_XGBE_MODE_KR) {
if (priv->kr_state != AMD_XGBE_RX_READY)
return AMD_XGBE_AN_NO_LINK;
priv->kr_state = AMD_XGBE_RX_BPA;
@@ -817,13 +777,6 @@ static enum amd_xgbe_phy_an amd_xgbe_an_start(struct phy_device *phydev)
/* Enable and start auto-negotiation */
phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_INT, 0);
- ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_KR_CTRL);
- if (ret < 0)
- return AMD_XGBE_AN_ERROR;
-
- ret |= MDIO_KR_CTRL_PDETECT;
- phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_KR_CTRL, ret);
-
ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1);
if (ret < 0)
return AMD_XGBE_AN_ERROR;
@@ -864,8 +817,8 @@ static enum amd_xgbe_phy_an amd_xgbe_an_page_received(struct phy_device *phydev)
enum amd_xgbe_phy_rx *state;
int ret;
- state = amd_xgbe_phy_in_kr_mode(phydev) ? &priv->kr_state
- : &priv->kx_state;
+ state = (priv->mode == AMD_XGBE_MODE_KR) ? &priv->kr_state
+ : &priv->kx_state;
switch (*state) {
case AMD_XGBE_RX_BPA:
@@ -885,13 +838,7 @@ static enum amd_xgbe_phy_an amd_xgbe_an_page_received(struct phy_device *phydev)
static enum amd_xgbe_phy_an amd_xgbe_an_incompat_link(struct phy_device *phydev)
{
- int ret;
-
- ret = amd_xgbe_phy_switch_mode(phydev);
- if (ret)
- return AMD_XGBE_AN_ERROR;
-
- return AMD_XGBE_AN_START;
+ return amd_xgbe_an_switch_mode(phydev);
}
static void amd_xgbe_an_state_machine(struct work_struct *work)
@@ -904,10 +851,6 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
int sleep;
unsigned int an_supported = 0;
- /* Start in KX mode */
- if (amd_xgbe_phy_set_mode(phydev, AMD_XGBE_MODE_KX))
- priv->an_state = AMD_XGBE_AN_ERROR;
-
while (1) {
mutex_lock(&priv->an_mutex);
@@ -915,9 +858,8 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
switch (priv->an_state) {
case AMD_XGBE_AN_START:
- an_supported = 0;
- priv->parallel_detect = 0;
priv->an_state = amd_xgbe_an_start(phydev);
+ an_supported = 0;
break;
case AMD_XGBE_AN_EVENT:
@@ -934,7 +876,6 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
break;
case AMD_XGBE_AN_COMPLETE:
- priv->parallel_detect = an_supported ? 0 : 1;
netdev_info(phydev->attached_dev, "%s successful\n",
an_supported ? "Auto negotiation"
: "Parallel detection");
@@ -1069,6 +1010,7 @@ static int amd_xgbe_phy_config_aneg(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv = phydev->priv;
u32 mmd_mask = phydev->c45_ids.devices_in_package;
+ int ret;
if (phydev->autoneg != AUTONEG_ENABLE)
return amd_xgbe_phy_setup_forced(phydev);
@@ -1077,6 +1019,11 @@ static int amd_xgbe_phy_config_aneg(struct phy_device *phydev)
if (!(mmd_mask & MDIO_DEVS_AN))
return -EINVAL;
+ /* Get the current speed mode */
+ ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
+ if (ret < 0)
+ return ret;
+
/* Start/Restart the auto-negotiation state machine */
mutex_lock(&priv->an_mutex);
priv->an_result = AMD_XGBE_AN_READY;
@@ -1166,14 +1113,18 @@ static int amd_xgbe_phy_read_status(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv = phydev->priv;
u32 mmd_mask = phydev->c45_ids.devices_in_package;
- int ret, ad_ret, lp_ret;
+ int ret, mode, ad_ret, lp_ret;
ret = amd_xgbe_phy_update_link(phydev);
if (ret)
return ret;
- if ((phydev->autoneg == AUTONEG_ENABLE) &&
- !priv->parallel_detect) {
+ mode = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
+ if (mode < 0)
+ return mode;
+ mode &= MDIO_PCS_CTRL2_TYPE;
+
+ if (phydev->autoneg == AUTONEG_ENABLE) {
if (!(mmd_mask & MDIO_DEVS_AN))
return -EINVAL;
@@ -1204,39 +1155,40 @@ static int amd_xgbe_phy_read_status(struct phy_device *phydev)
ad_ret &= lp_ret;
if (ad_ret & 0x80) {
phydev->speed = SPEED_10000;
- ret = amd_xgbe_phy_set_mode(phydev, AMD_XGBE_MODE_KR);
- if (ret)
- return ret;
+ if (mode != MDIO_PCS_CTRL2_10GBR) {
+ ret = amd_xgbe_phy_xgmii_mode(phydev);
+ if (ret < 0)
+ return ret;
+ }
} else {
- switch (priv->speed_set) {
- case AMD_XGBE_PHY_SPEEDSET_1000_10000:
- phydev->speed = SPEED_1000;
- break;
+ int (*mode_fcn)(struct phy_device *);
- case AMD_XGBE_PHY_SPEEDSET_2500_10000:
+ if (priv->speed_set ==
+ AMD_XGBE_PHY_SPEEDSET_1000_10000) {
+ phydev->speed = SPEED_1000;
+ mode_fcn = amd_xgbe_phy_gmii_mode;
+ } else {
phydev->speed = SPEED_2500;
- break;
+ mode_fcn = amd_xgbe_phy_gmii_2500_mode;
}
- ret = amd_xgbe_phy_set_mode(phydev, AMD_XGBE_MODE_KX);
- if (ret)
- return ret;
+ if (mode == MDIO_PCS_CTRL2_10GBR) {
+ ret = mode_fcn(phydev);
+ if (ret < 0)
+ return ret;
+ }
}
phydev->duplex = DUPLEX_FULL;
} else {
- if (amd_xgbe_phy_in_kr_mode(phydev)) {
+ if (mode == MDIO_PCS_CTRL2_10GBR) {
phydev->speed = SPEED_10000;
} else {
- switch (priv->speed_set) {
- case AMD_XGBE_PHY_SPEEDSET_1000_10000:
+ if (priv->speed_set ==
+ AMD_XGBE_PHY_SPEEDSET_1000_10000)
phydev->speed = SPEED_1000;
- break;
-
- case AMD_XGBE_PHY_SPEEDSET_2500_10000:
+ else
phydev->speed = SPEED_2500;
- break;
- }
}
phydev->duplex = DUPLEX_FULL;
phydev->pause = 0;
@@ -1288,29 +1240,188 @@ unlock:
return ret;
}
+static int amd_xgbe_phy_map_resources(struct amd_xgbe_phy_priv *priv,
+ struct platform_device *phy_pdev,
+ unsigned int phy_resnum)
+{
+ struct device *dev = priv->dev;
+ int ret;
+
+ /* Get the device mmio areas */
+ priv->rxtx_res = platform_get_resource(phy_pdev, IORESOURCE_MEM,
+ phy_resnum++);
+ priv->rxtx_regs = devm_ioremap_resource(dev, priv->rxtx_res);
+ if (IS_ERR(priv->rxtx_regs)) {
+ dev_err(dev, "rxtx ioremap failed\n");
+ return PTR_ERR(priv->rxtx_regs);
+ }
+
+ /* All xgbe phy devices share the CMU registers so retrieve
+ * the resource and do the ioremap directly rather than
+ * the devm_ioremap_resource call
+ */
+ priv->cmu_res = platform_get_resource(phy_pdev, IORESOURCE_MEM,
+ phy_resnum++);
+ if (!priv->cmu_res) {
+ dev_err(dev, "cmu invalid resource\n");
+ ret = -EINVAL;
+ goto err_rxtx;
+ }
+ priv->cmu_regs = devm_ioremap_nocache(dev, priv->cmu_res->start,
+ resource_size(priv->cmu_res));
+ if (!priv->cmu_regs) {
+ dev_err(dev, "cmu ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_rxtx;
+ }
+
+ return 0;
+
+err_rxtx:
+ devm_iounmap(dev, priv->rxtx_regs);
+ devm_release_mem_region(dev, priv->rxtx_res->start,
+ resource_size(priv->rxtx_res));
+
+ return ret;
+}
+
+static void amd_xgbe_phy_unmap_resources(struct amd_xgbe_phy_priv *priv)
+{
+ struct device *dev = priv->dev;
+
+ devm_iounmap(dev, priv->cmu_regs);
+
+ devm_iounmap(dev, priv->rxtx_regs);
+ devm_release_mem_region(dev, priv->rxtx_res->start,
+ resource_size(priv->rxtx_res));
+}
+
+#ifdef CONFIG_ACPI
+static int amd_xgbe_phy_acpi_support(struct amd_xgbe_phy_priv *priv)
+{
+ struct platform_device *phy_pdev = priv->pdev;
+ struct acpi_device *adev = priv->adev;
+ struct device *dev = priv->dev;
+ const union acpi_object *property;
+ int ret;
+
+ /* Map the memory resources */
+ ret = amd_xgbe_phy_map_resources(priv, phy_pdev, 2);
+ if (ret)
+ return ret;
+
+ /* Get the device serdes channel property */
+ ret = acpi_dev_get_property(adev, XGBE_PHY_CHANNEL_PROPERTY,
+ ACPI_TYPE_INTEGER, &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_PHY_CHANNEL_PROPERTY);
+ goto err_resources;
+ }
+ priv->serdes_channel = property->integer.value;
+
+ /* Get the device speed set property */
+ ret = acpi_dev_get_property(adev, XGBE_PHY_SPEEDSET_PROPERTY,
+ ACPI_TYPE_INTEGER, &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s acpi property\n",
+ XGBE_PHY_SPEEDSET_PROPERTY);
+ goto err_resources;
+ }
+ priv->speed_set = property->integer.value;
+
+ return 0;
+
+err_resources:
+ amd_xgbe_phy_unmap_resources(priv);
+
+ return ret;
+}
+#else /* CONFIG_ACPI */
+static int amd_xgbe_phy_acpi_support(struct amd_xgbe_phy_priv *priv)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_ACPI */
+
+#ifdef CONFIG_OF
+static int amd_xgbe_phy_of_support(struct amd_xgbe_phy_priv *priv)
+{
+ struct platform_device *phy_pdev;
+ struct device_node *bus_node;
+ struct device_node *phy_node;
+ struct device *dev = priv->dev;
+ const __be32 *property;
+ int ret;
+
+ bus_node = priv->dev->of_node;
+ phy_node = of_parse_phandle(bus_node, "phy-handle", 0);
+ if (!phy_node) {
+ dev_err(dev, "unable to parse phy-handle\n");
+ return -EINVAL;
+ }
+
+ phy_pdev = of_find_device_by_node(phy_node);
+ if (!phy_pdev) {
+ dev_err(dev, "unable to obtain phy device\n");
+ ret = -EINVAL;
+ goto err_put;
+ }
+
+ /* Map the memory resources */
+ ret = amd_xgbe_phy_map_resources(priv, phy_pdev, 0);
+ if (ret)
+ goto err_put;
+
+ /* Get the device serdes channel property */
+ property = of_get_property(phy_node, XGBE_PHY_CHANNEL_PROPERTY, NULL);
+ if (!property) {
+ dev_err(dev, "unable to obtain %s property\n",
+ XGBE_PHY_CHANNEL_PROPERTY);
+ ret = -EINVAL;
+ goto err_resources;
+ }
+ priv->serdes_channel = be32_to_cpu(*property);
+
+ /* Get the device speed set property */
+ property = of_get_property(phy_node, XGBE_PHY_SPEEDSET_PROPERTY, NULL);
+ if (property)
+ priv->speed_set = be32_to_cpu(*property);
+
+ of_node_put(phy_node);
+
+ return 0;
+
+err_resources:
+ amd_xgbe_phy_unmap_resources(priv);
+
+err_put:
+ of_node_put(phy_node);
+
+ return ret;
+}
+#else /* CONFIG_OF */
+static int amd_xgbe_phy_of_support(struct amd_xgbe_phy_priv *priv)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_OF */
+
static int amd_xgbe_phy_probe(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv;
- struct platform_device *pdev;
struct device *dev;
char *wq_name;
- const __be32 *property;
- unsigned int speed_set;
int ret;
- if (!phydev->dev.of_node)
+ if (!phydev->bus || !phydev->bus->parent)
return -EINVAL;
- pdev = of_find_device_by_node(phydev->dev.of_node);
- if (!pdev)
- return -EINVAL;
- dev = &pdev->dev;
+ dev = phydev->bus->parent;
wq_name = kasprintf(GFP_KERNEL, "%s-amd-xgbe-phy", phydev->bus->name);
- if (!wq_name) {
- ret = -ENOMEM;
- goto err_pdev;
- }
+ if (!wq_name)
+ return -ENOMEM;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
@@ -1318,86 +1429,54 @@ static int amd_xgbe_phy_probe(struct phy_device *phydev)
goto err_name;
}
- priv->pdev = pdev;
+ priv->pdev = to_platform_device(dev);
+ priv->adev = ACPI_COMPANION(dev);
priv->dev = dev;
priv->phydev = phydev;
- /* Get the device mmio areas */
- priv->rxtx_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->rxtx_regs = devm_ioremap_resource(dev, priv->rxtx_res);
- if (IS_ERR(priv->rxtx_regs)) {
- dev_err(dev, "rxtx ioremap failed\n");
- ret = PTR_ERR(priv->rxtx_regs);
+ if (priv->adev && !acpi_disabled)
+ ret = amd_xgbe_phy_acpi_support(priv);
+ else
+ ret = amd_xgbe_phy_of_support(priv);
+ if (ret)
goto err_priv;
- }
-
- priv->sir0_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- priv->sir0_regs = devm_ioremap_resource(dev, priv->sir0_res);
- if (IS_ERR(priv->sir0_regs)) {
- dev_err(dev, "sir0 ioremap failed\n");
- ret = PTR_ERR(priv->sir0_regs);
- goto err_rxtx;
- }
-
- priv->sir1_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
- priv->sir1_regs = devm_ioremap_resource(dev, priv->sir1_res);
- if (IS_ERR(priv->sir1_regs)) {
- dev_err(dev, "sir1 ioremap failed\n");
- ret = PTR_ERR(priv->sir1_regs);
- goto err_sir0;
- }
- /* Get the device speed set property */
- speed_set = 0;
- property = of_get_property(dev->of_node, XGBE_PHY_SPEEDSET_PROPERTY,
- NULL);
- if (property)
- speed_set = be32_to_cpu(*property);
-
- switch (speed_set) {
- case 0:
- priv->speed_set = AMD_XGBE_PHY_SPEEDSET_1000_10000;
- break;
- case 1:
- priv->speed_set = AMD_XGBE_PHY_SPEEDSET_2500_10000;
+ switch (priv->speed_set) {
+ case AMD_XGBE_PHY_SPEEDSET_1000_10000:
+ case AMD_XGBE_PHY_SPEEDSET_2500_10000:
break;
default:
dev_err(dev, "invalid amd,speed-set property\n");
ret = -EINVAL;
- goto err_sir1;
+ goto err_resources;
}
priv->link = 1;
+ ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL2);
+ if (ret < 0)
+ goto err_resources;
+ if ((ret & MDIO_PCS_CTRL2_TYPE) == MDIO_PCS_CTRL2_10GBR)
+ priv->mode = AMD_XGBE_MODE_KR;
+ else
+ priv->mode = AMD_XGBE_MODE_KX;
+
mutex_init(&priv->an_mutex);
INIT_WORK(&priv->an_work, amd_xgbe_an_state_machine);
priv->an_workqueue = create_singlethread_workqueue(wq_name);
if (!priv->an_workqueue) {
ret = -ENOMEM;
- goto err_sir1;
+ goto err_resources;
}
phydev->priv = priv;
kfree(wq_name);
- of_dev_put(pdev);
return 0;
-err_sir1:
- devm_iounmap(dev, priv->sir1_regs);
- devm_release_mem_region(dev, priv->sir1_res->start,
- resource_size(priv->sir1_res));
-
-err_sir0:
- devm_iounmap(dev, priv->sir0_regs);
- devm_release_mem_region(dev, priv->sir0_res->start,
- resource_size(priv->sir0_res));
-
-err_rxtx:
- devm_iounmap(dev, priv->rxtx_regs);
- devm_release_mem_region(dev, priv->rxtx_res->start,
- resource_size(priv->rxtx_res));
+err_resources:
+ amd_xgbe_phy_unmap_resources(priv);
err_priv:
devm_kfree(dev, priv);
@@ -1405,9 +1484,6 @@ err_priv:
err_name:
kfree(wq_name);
-err_pdev:
- of_dev_put(pdev);
-
return ret;
}
@@ -1424,18 +1500,7 @@ static void amd_xgbe_phy_remove(struct phy_device *phydev)
flush_workqueue(priv->an_workqueue);
destroy_workqueue(priv->an_workqueue);
- /* Release resources */
- devm_iounmap(dev, priv->sir1_regs);
- devm_release_mem_region(dev, priv->sir1_res->start,
- resource_size(priv->sir1_res));
-
- devm_iounmap(dev, priv->sir0_regs);
- devm_release_mem_region(dev, priv->sir0_res->start,
- resource_size(priv->sir0_res));
-
- devm_iounmap(dev, priv->rxtx_regs);
- devm_release_mem_region(dev, priv->rxtx_res->start,
- resource_size(priv->rxtx_res));
+ amd_xgbe_phy_unmap_resources(priv);
devm_kfree(dev, priv);
}
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 3823edf..4c2ccde 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1250,6 +1250,39 @@ int of_property_read_u64(const struct device_node *np, const char *propname,
EXPORT_SYMBOL_GPL(of_property_read_u64);
/**
+ * of_property_read_u64_array - Find and read an array of 64 bit integers
+ * from a property.
+ *
+ * @np: device node from which the property value is to be read.
+ * @propname: name of the property to be searched.
+ * @out_values: pointer to return value, modified only if return value is 0.
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 64-bit value(s) from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u64 value can be decoded.
+ */
+int of_property_read_u64_array(const struct device_node *np,
+ const char *propname, u64 *out_values,
+ size_t sz)
+{
+ const __be32 *val = of_find_property_value_of_size(np, propname,
+ (sz * sizeof(*out_values)));
+
+ if (IS_ERR(val))
+ return PTR_ERR(val);
+
+ while (sz--) {
+ *out_values++ = of_read_number(val, 2);
+ val += 2;
+ }
+ return 0;
+}
+
+/**
* of_property_read_string - Find and read a string from a property
* @np: device node from which the property value is to be read.
* @propname: name of the property to be searched.
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 9ecabfa..9029d59c 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -29,6 +29,7 @@
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
#define PCIECORE_CTLANDSTATUS 0x50
#define PIM1_1L 0x80
@@ -235,6 +236,13 @@ static int xgene_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
break;
case 2:
xgene_pcie_cfg_in16(addr, offset, val);
+ /* FIXME.
+ * Something wrong with Configuration Request Retry Status
+ * on this hw. Pretend it isn't supported until the problem
+ * gets sorted out properly.
+ */
+ if (pci_is_root_bus(bus) && offset == (0x40 + PCI_EXP_RTCAP))
+ *val &= ~PCI_EXP_RTCAP_CRSVIS;
break;
default:
xgene_pcie_cfg_in32(addr, offset, val);
@@ -600,6 +608,165 @@ static int xgene_pcie_setup(struct xgene_pcie_port *port,
return 0;
}
+#ifdef CONFIG_ACPI
+struct xgene_mcfg_info {
+ void __iomem *csr_base;
+};
+
+/*
+ * When the address bit [17:16] is 2'b01, the Configuration access will be
+ * treated as Type 1 and it will be forwarded to external PCIe device.
+ */
+static void __iomem *__get_cfg_base(struct pci_mmcfg_region *cfg,
+ unsigned int bus)
+{
+ if (bus > cfg->start_bus)
+ return cfg->virt + AXI_EP_CFG_ACCESS;
+
+ return cfg->virt;
+}
+
+/*
+ * For Configuration request, RTDID register is used as Bus Number,
+ * Device Number and Function number of the header fields.
+ */
+static void __set_rtdid_reg(struct pci_mmcfg_region *cfg,
+ unsigned int bus, unsigned int devfn)
+{
+ struct xgene_mcfg_info *info = cfg->data;
+ unsigned int b, d, f;
+ u32 rtdid_val = 0;
+
+ b = bus;
+ d = PCI_SLOT(devfn);
+ f = PCI_FUNC(devfn);
+
+ if (bus != cfg->start_bus)
+ rtdid_val = (b << 8) | (d << 3) | f;
+
+ writel(rtdid_val, info->csr_base + RTDID);
+ /* read the register back to ensure flush */
+ readl(info->csr_base + RTDID);
+}
+
+static int xgene_raw_pci_read(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int offset, int len, u32 *val)
+{
+ void __iomem *addr;
+
+ if (bus == cfg->start_bus) {
+ if (devfn != 0) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ /* see xgene_pcie_hide_rc_bars() above */
+ if (offset == PCI_BASE_ADDRESS_0 ||
+ offset == PCI_BASE_ADDRESS_1) {
+ *val = 0;
+ return PCIBIOS_SUCCESSFUL;
+ }
+ }
+
+ __set_rtdid_reg(cfg, bus, devfn);
+ addr = __get_cfg_base(cfg, bus);
+ switch (len) {
+ case 1:
+ xgene_pcie_cfg_in8(addr, offset, val);
+ break;
+ case 2:
+ xgene_pcie_cfg_in16(addr, offset, val);
+ /* FIXME.
+ * Something wrong with Configuration Request Retry Status
+ * on this hw. Pretend it isn't supported until the problem
+ * gets sorted out properly.
+ */
+ if (bus == cfg->start_bus && offset == (0x40 + PCI_EXP_RTCAP))
+ *val &= ~PCI_EXP_RTCAP_CRSVIS;
+ break;
+ default:
+ xgene_pcie_cfg_in32(addr, offset, val);
+ break;
+ }
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int xgene_raw_pci_write(struct pci_mmcfg_region *cfg, unsigned int bus,
+ unsigned int devfn, int offset, int len, u32 val)
+{
+ void __iomem *addr;
+
+ if (bus == cfg->start_bus && devfn != 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ __set_rtdid_reg(cfg, bus, devfn);
+ addr = __get_cfg_base(cfg, bus);
+ switch (len) {
+ case 1:
+ xgene_pcie_cfg_out8(addr, offset, (u8)val);
+ break;
+ case 2:
+ xgene_pcie_cfg_out16(addr, offset, (u16)val);
+ break;
+ default:
+ xgene_pcie_cfg_out32(addr, offset, val);
+ break;
+ }
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static acpi_status find_csr_base(struct acpi_resource *acpi_res, void *data)
+{
+ struct pci_mmcfg_region *cfg = data;
+ struct xgene_mcfg_info *info = cfg->data;
+ struct acpi_resource_fixed_memory32 *fixed32;
+
+ if (acpi_res->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) {
+ fixed32 = &acpi_res->data.fixed_memory32;
+ info->csr_base = ioremap(fixed32->address,
+ fixed32->address_length);
+ return AE_CTRL_TERMINATE;
+ }
+ return AE_OK;
+}
+
+static int xgene_mcfg_fixup(struct acpi_pci_root *root,
+ struct pci_mmcfg_region *cfg)
+{
+ struct acpi_device *device = root->device;
+ struct xgene_mcfg_info *info;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (info == NULL)
+ return -ENOMEM;
+
+ cfg->data = info;
+
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ find_csr_base, cfg);
+
+ if (!info->csr_base) {
+ kfree(info);
+ cfg->data = NULL;
+ return -ENODEV;
+ }
+
+ cfg->read = xgene_raw_pci_read;
+ cfg->write = xgene_raw_pci_write;
+
+ /* actual last bus reachable through this mmconfig */
+ cfg->end_bus = root->secondary.end;
+
+ /* firmware should have done this */
+ xgene_raw_pci_write(cfg, cfg->start_bus, 0, PCI_PRIMARY_BUS, 4,
+ cfg->start_bus | ((cfg->start_bus + 1) << 8) |
+ (cfg->end_bus << 16));
+
+ return 0;
+}
+DECLARE_ACPI_MCFG_FIXUP("APM ", "XGENE ", xgene_mcfg_fixup);
+#endif /* CONFIG_ACPI */
+
static int xgene_pcie_probe_bridge(struct platform_device *pdev)
{
struct device_node *dn = pdev->dev.of_node;
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 782e822..d952462 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -313,6 +313,7 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
progif = class & 0xff;
class >>= 8;
+#ifdef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
if (class == PCI_CLASS_STORAGE_IDE) {
/*
* Unless both channels are native-PCI mode only,
@@ -326,6 +327,7 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
return 1;
}
}
+#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
return 0;
}
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b24aa01..50fe279 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -419,4 +419,10 @@ config DA_CONSOLE
help
This enables a console on a Dash channel.
+config SBSAUART_TTY
+ tristate "SBSA UART TTY Driver"
+ help
+ Console and system TTY driver for the SBSA UART which is defined
+ in the Server Base System Architecure document for ARM64 servers.
+
endif # TTY
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 58ad1c0..c3211c0 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -29,5 +29,6 @@ obj-$(CONFIG_SYNCLINK) += synclink.o
obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
obj-$(CONFIG_GOLDFISH_TTY) += goldfish.o
obj-$(CONFIG_DA_TTY) += metag_da.o
+obj-$(CONFIG_SBSAUART_TTY) += sbsauart.o
obj-y += ipwireless/
diff --git a/drivers/tty/sbsauart.c b/drivers/tty/sbsauart.c
new file mode 100644
index 0000000..402f168
--- /dev/null
+++ b/drivers/tty/sbsauart.c
@@ -0,0 +1,355 @@
+/*
+ * SBSA (Server Base System Architecture) Compatible UART driver
+ *
+ * Copyright (C) 2014 Linaro Ltd
+ *
+ * Author: Graeme Gregory <graeme.gregory@linaro.org>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/amba/serial.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/serial_core.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+
+struct sbsa_tty {
+ struct tty_port port;
+ spinlock_t lock;
+ void __iomem *base;
+ u32 irq;
+ int opencount;
+ struct console console;
+};
+
+static struct tty_driver *sbsa_tty_driver;
+static struct sbsa_tty *sbsa_tty;
+
+#define SBSAUART_CHAR_MASK 0xFF
+
+static void sbsa_raw_putc(struct uart_port *port, int c)
+{
+ while (readw(port->membase + UART01x_FR) & UART01x_FR_TXFF)
+ ;
+ writew(c & 0xFF, port->membase + UART01x_DR);
+}
+
+static void sbsa_uart_early_write(struct console *con, const char *buf,
+ unsigned count)
+{
+ struct earlycon_device *dev = con->data;
+
+ uart_console_write(&dev->port, buf, count, sbsa_raw_putc);
+}
+
+static int __init sbsa_uart_early_console_setup(struct earlycon_device *device,
+ const char *opt)
+{
+ if (!device->port.membase)
+ return -ENODEV;
+
+ device->con->write = sbsa_uart_early_write;
+ return 0;
+}
+EARLYCON_DECLARE(sbsauart, sbsa_uart_early_console_setup);
+
+static void sbsa_tty_do_write(const char *buf, unsigned count)
+{
+ unsigned long irq_flags;
+ struct sbsa_tty *qtty = sbsa_tty;
+ void __iomem *base = qtty->base;
+ unsigned n;
+
+ spin_lock_irqsave(&qtty->lock, irq_flags);
+ for (n = 0; n < count; n++) {
+ while (readw(base + UART01x_FR) & UART01x_FR_TXFF)
+ ;
+ writew(buf[n], base + UART01x_DR);
+ }
+ spin_unlock_irqrestore(&qtty->lock, irq_flags);
+}
+
+static void sbsauart_fifo_to_tty(struct sbsa_tty *qtty)
+{
+ void __iomem *base = qtty->base;
+ unsigned int flag, max_count = 32;
+ u16 status, ch;
+
+ while (max_count--) {
+ status = readw(base + UART01x_FR);
+ if (status & UART01x_FR_RXFE)
+ break;
+
+ /* Take chars from the FIFO and update status */
+ ch = readw(base + UART01x_DR);
+ flag = TTY_NORMAL;
+
+ if (ch & UART011_DR_BE)
+ flag = TTY_BREAK;
+ else if (ch & UART011_DR_PE)
+ flag = TTY_PARITY;
+ else if (ch & UART011_DR_FE)
+ flag = TTY_FRAME;
+ else if (ch & UART011_DR_OE)
+ flag = TTY_OVERRUN;
+
+ ch &= SBSAUART_CHAR_MASK;
+
+ tty_insert_flip_char(&qtty->port, ch, flag);
+ }
+
+ tty_schedule_flip(&qtty->port);
+
+ /* Clear the RX IRQ */
+ writew(UART011_RXIC | UART011_RXIC, base + UART011_ICR);
+}
+
+static irqreturn_t sbsa_tty_interrupt(int irq, void *dev_id)
+{
+ struct sbsa_tty *qtty = sbsa_tty;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&qtty->lock, irq_flags);
+ sbsauart_fifo_to_tty(qtty);
+ spin_unlock_irqrestore(&qtty->lock, irq_flags);
+
+ return IRQ_HANDLED;
+}
+
+static int sbsa_tty_open(struct tty_struct *tty, struct file *filp)
+{
+ struct sbsa_tty *qtty = sbsa_tty;
+
+ return tty_port_open(&qtty->port, tty, filp);
+}
+
+static void sbsa_tty_close(struct tty_struct *tty, struct file *filp)
+{
+ tty_port_close(tty->port, tty, filp);
+}
+
+static void sbsa_tty_hangup(struct tty_struct *tty)
+{
+ tty_port_hangup(tty->port);
+}
+
+static int sbsa_tty_write(struct tty_struct *tty, const unsigned char *buf,
+ int count)
+{
+ sbsa_tty_do_write(buf, count);
+ return count;
+}
+
+static int sbsa_tty_write_room(struct tty_struct *tty)
+{
+ return 32;
+}
+
+static void sbsa_tty_console_write(struct console *co, const char *b,
+ unsigned count)
+{
+ sbsa_tty_do_write(b, count);
+
+ if (b[count - 1] == '\n')
+ sbsa_tty_do_write("\r", 1);
+}
+
+static struct tty_driver *sbsa_tty_console_device(struct console *c,
+ int *index)
+{
+ *index = c->index;
+ return sbsa_tty_driver;
+}
+
+static int sbsa_tty_console_setup(struct console *co, char *options)
+{
+ if ((unsigned)co->index > 0)
+ return -ENODEV;
+ if (sbsa_tty->base == NULL)
+ return -ENODEV;
+ return 0;
+}
+
+static struct tty_port_operations sbsa_port_ops = {
+};
+
+static const struct tty_operations sbsa_tty_ops = {
+ .open = sbsa_tty_open,
+ .close = sbsa_tty_close,
+ .hangup = sbsa_tty_hangup,
+ .write = sbsa_tty_write,
+ .write_room = sbsa_tty_write_room,
+};
+
+static int sbsa_tty_create_driver(void)
+{
+ int ret;
+ struct tty_driver *tty;
+
+ sbsa_tty = kzalloc(sizeof(*sbsa_tty), GFP_KERNEL);
+ if (sbsa_tty == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_sbsa_tty_failed;
+ }
+ tty = alloc_tty_driver(1);
+ if (tty == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_tty_driver_failed;
+ }
+ tty->driver_name = "sbsauart";
+ tty->name = "ttySBSA";
+ tty->type = TTY_DRIVER_TYPE_SERIAL;
+ tty->subtype = SERIAL_TYPE_NORMAL;
+ tty->init_termios = tty_std_termios;
+ tty->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW |
+ TTY_DRIVER_DYNAMIC_DEV;
+ tty_set_operations(tty, &sbsa_tty_ops);
+ ret = tty_register_driver(tty);
+ if (ret)
+ goto err_tty_register_driver_failed;
+
+ sbsa_tty_driver = tty;
+ return 0;
+
+err_tty_register_driver_failed:
+ put_tty_driver(tty);
+err_alloc_tty_driver_failed:
+ kfree(sbsa_tty);
+ sbsa_tty = NULL;
+err_alloc_sbsa_tty_failed:
+ return ret;
+}
+
+static void sbsa_tty_delete_driver(void)
+{
+ tty_unregister_driver(sbsa_tty_driver);
+ put_tty_driver(sbsa_tty_driver);
+ sbsa_tty_driver = NULL;
+ kfree(sbsa_tty);
+ sbsa_tty = NULL;
+}
+
+static int sbsa_tty_probe(struct platform_device *pdev)
+{
+ struct sbsa_tty *qtty;
+ int ret = -EINVAL;
+ int i;
+ struct resource *r;
+ struct device *ttydev;
+ void __iomem *base;
+ u32 irq;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (r == NULL)
+ return -EINVAL;
+
+ base = ioremap(r->start, r->end - r->start);
+ if (base == NULL)
+ pr_err("sbsa_tty: unable to remap base\n");
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r == NULL)
+ goto err_unmap;
+
+ irq = r->start;
+
+ if (pdev->id > 0)
+ goto err_unmap;
+
+ ret = sbsa_tty_create_driver();
+ if (ret)
+ goto err_unmap;
+
+ qtty = sbsa_tty;
+ spin_lock_init(&qtty->lock);
+ tty_port_init(&qtty->port);
+ qtty->port.ops = &sbsa_port_ops;
+ qtty->base = base;
+ qtty->irq = irq;
+
+ /* Clear and Mask all IRQs */
+ writew(0, base + UART011_IMSC);
+ writew(0xFFFF, base + UART011_ICR);
+
+ ret = request_irq(irq, sbsa_tty_interrupt, IRQF_SHARED,
+ "sbsa_tty", pdev);
+ if (ret)
+ goto err_request_irq_failed;
+
+ /* Unmask the RX IRQ */
+ writew(UART011_RXIM | UART011_RTIM, base + UART011_IMSC);
+
+ ttydev = tty_port_register_device(&qtty->port, sbsa_tty_driver,
+ 0, &pdev->dev);
+ if (IS_ERR(ttydev)) {
+ ret = PTR_ERR(ttydev);
+ goto err_tty_register_device_failed;
+ }
+
+ strcpy(qtty->console.name, "ttySBSA");
+ qtty->console.write = sbsa_tty_console_write;
+ qtty->console.device = sbsa_tty_console_device;
+ qtty->console.setup = sbsa_tty_console_setup;
+ qtty->console.flags = CON_PRINTBUFFER;
+ qtty->console.index = pdev->id;
+ register_console(&qtty->console);
+
+ return 0;
+
+ tty_unregister_device(sbsa_tty_driver, i);
+err_tty_register_device_failed:
+ free_irq(irq, pdev);
+err_request_irq_failed:
+ sbsa_tty_delete_driver();
+err_unmap:
+ iounmap(base);
+ return ret;
+}
+
+static int sbsa_tty_remove(struct platform_device *pdev)
+{
+ struct sbsa_tty *qtty;
+
+ qtty = sbsa_tty;
+ unregister_console(&qtty->console);
+ tty_unregister_device(sbsa_tty_driver, pdev->id);
+ iounmap(qtty->base);
+ qtty->base = 0;
+ free_irq(qtty->irq, pdev);
+ sbsa_tty_delete_driver();
+ return 0;
+}
+
+static const struct acpi_device_id sbsa_acpi_match[] = {
+ { "ARMH0011", 0 },
+ { }
+};
+
+static struct platform_driver sbsa_tty_platform_driver = {
+ .probe = sbsa_tty_probe,
+ .remove = sbsa_tty_remove,
+ .driver = {
+ .name = "sbsa_tty",
+ .acpi_match_table = ACPI_PTR(sbsa_acpi_match),
+ }
+};
+
+module_platform_driver(sbsa_tty_platform_driver);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index beea6ca..7038a2d 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -310,10 +310,18 @@ static int dw8250_probe_of(struct uart_port *p,
static int dw8250_probe_acpi(struct uart_8250_port *up,
struct dw8250_data *data)
{
+ const struct acpi_device_id *id;
struct uart_port *p = &up->port;
dw8250_setup_port(up);
+ id = acpi_match_device(p->dev->driver->acpi_match_table, p->dev);
+ if (!id)
+ return -ENODEV;
+
+ if (!p->uartclk)
+ p->uartclk = (unsigned int)id->driver_data;
+
p->iotype = UPIO_MEM32;
p->serial_in = dw8250_serial_in32;
p->serial_out = dw8250_serial_out32;
@@ -536,6 +544,7 @@ static const struct acpi_device_id dw8250_acpi_match[] = {
{ "INT3435", 0 },
{ "80860F0A", 0 },
{ "8086228A", 0 },
+ { "APMC0D08", 50000000},
{ },
};
MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match);
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index ef9a165..9f1939c 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -100,8 +100,7 @@
#include <linux/virtio_config.h>
#include <linux/virtio_mmio.h>
#include <linux/virtio_ring.h>
-
-
+#include <linux/acpi.h>
/* The alignment to use between consumer and producer parts of vring.
* Currently hardcoded to the page size. */
@@ -634,6 +633,14 @@ static struct of_device_id virtio_mmio_match[] = {
};
MODULE_DEVICE_TABLE(of, virtio_mmio_match);
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id virtio_mmio_acpi_match[] = {
+ { "LNRO0005", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, virtio_mmio_acpi_match);
+#endif
+
static struct platform_driver virtio_mmio_driver = {
.probe = virtio_mmio_probe,
.remove = virtio_mmio_remove,
@@ -641,6 +648,7 @@ static struct platform_driver virtio_mmio_driver = {
.name = "virtio-mmio",
.owner = THIS_MODULE,
.of_match_table = virtio_mmio_match,
+ .acpi_match_table = ACPI_PTR(virtio_mmio_acpi_match),
},
};
diff --git a/drivers/xen/efi.c b/drivers/xen/efi.c
index 1f850c9..f745db2 100644
--- a/drivers/xen/efi.c
+++ b/drivers/xen/efi.c
@@ -294,6 +294,7 @@ static const struct efi efi_xen __initconst = {
.acpi = EFI_INVALID_TABLE_ADDR,
.acpi20 = EFI_INVALID_TABLE_ADDR,
.smbios = EFI_INVALID_TABLE_ADDR,
+ .smbios3 = EFI_INVALID_TABLE_ADDR,
.sal_systab = EFI_INVALID_TABLE_ADDR,
.boot_info = EFI_INVALID_TABLE_ADDR,
.hcdp = EFI_INVALID_TABLE_ADDR,
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index f34a083..04d02fc 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -27,6 +27,7 @@
#define __ACPI_BUS_H__
#include <linux/device.h>
+#include <linux/property.h>
/* TBD: Make dynamic */
#define ACPI_MAX_HANDLES 10
@@ -68,6 +69,8 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs);
union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,
int rev, int func, union acpi_object *argv4);
+acpi_status acpi_check_coherency(acpi_handle handle, int *val);
+
static inline union acpi_object *
acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, int rev, int func,
union acpi_object *argv4, acpi_object_type type)
@@ -337,10 +340,20 @@ struct acpi_device_physical_node {
bool put_online:1;
};
+/* ACPI Device Specific Data (_DSD) */
+struct acpi_device_data {
+ const union acpi_object *pointer;
+ const union acpi_object *properties;
+ const union acpi_object *of_compatible;
+};
+
+struct acpi_gpio_mapping;
+
/* Device */
struct acpi_device {
int device_type;
acpi_handle handle; /* no handle for fixed hardware */
+ struct fwnode_handle fwnode;
struct acpi_device *parent;
struct list_head children;
struct list_head node;
@@ -353,9 +366,11 @@ struct acpi_device {
struct acpi_device_wakeup wakeup;
struct acpi_device_perf performance;
struct acpi_device_dir dir;
+ struct acpi_device_data data;
struct acpi_scan_handler *handler;
struct acpi_hotplug_context *hp;
struct acpi_driver *driver;
+ const struct acpi_gpio_mapping *driver_gpios;
void *driver_data;
struct device dev;
unsigned int physical_node_count;
@@ -364,6 +379,21 @@ struct acpi_device {
void (*remove)(struct acpi_device *);
};
+static inline bool is_acpi_node(struct fwnode_handle *fwnode)
+{
+ return fwnode && fwnode->type == FWNODE_ACPI;
+}
+
+static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode)
+{
+ return fwnode ? container_of(fwnode, struct acpi_device, fwnode) : NULL;
+}
+
+static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
+{
+ return &adev->fwnode;
+}
+
static inline void *acpi_driver_data(struct acpi_device *d)
{
return d->driver_data;
diff --git a/include/acpi/acpi_io.h b/include/acpi/acpi_io.h
index 444671e..9d573db 100644
--- a/include/acpi/acpi_io.h
+++ b/include/acpi/acpi_io.h
@@ -1,11 +1,17 @@
#ifndef _ACPI_IO_H_
#define _ACPI_IO_H_
+#include <linux/mm.h>
#include <linux/io.h>
static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
acpi_size size)
{
+#ifdef CONFIG_ARM64
+ if (!page_is_ram(phys >> PAGE_SHIFT))
+ return ioremap(phys, size);
+#endif
+
return ioremap_cache(phys, size);
}
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index aa70cbd..1261fef 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -275,6 +275,13 @@
VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \
} \
\
+ /* ACPI quirks */ \
+ .acpi_fixup : AT(ADDR(.acpi_fixup) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__start_acpi_mcfg_fixups) = .; \
+ *(.acpi_fixup_mcfg) \
+ VMLINUX_SYMBOL(__end_acpi_mcfg_fixups) = .; \
+ } \
+ \
/* Built-in firmware blobs */ \
.builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start_builtin_fw) = .; \
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 206dcc3..660dbfc 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -289,17 +289,19 @@ bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
#define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel))
#define vgic_initialized(k) ((k)->arch.vgic.ready)
-int vgic_v2_probe(struct device_node *vgic_node,
- const struct vgic_ops **ops,
- const struct vgic_params **params);
+int vgic_v2_dt_probe(struct device_node *vgic_node,
+ const struct vgic_ops **ops,
+ const struct vgic_params **params);
+int vgic_v2_acpi_probe(const struct vgic_ops **ops,
+ const struct vgic_params **params);
#ifdef CONFIG_ARM_GIC_V3
-int vgic_v3_probe(struct device_node *vgic_node,
- const struct vgic_ops **ops,
- const struct vgic_params **params);
+int vgic_v3_dt_probe(struct device_node *vgic_node,
+ const struct vgic_ops **ops,
+ const struct vgic_params **params);
#else
-static inline int vgic_v3_probe(struct device_node *vgic_node,
- const struct vgic_ops **ops,
- const struct vgic_params **params)
+static inline int vgic_v3_dt_probe(struct device_node *vgic_node,
+ const struct vgic_ops **ops,
+ const struct vgic_params **params)
{
return -ENODEV;
}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 407a12f..de81de3 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -28,6 +28,7 @@
#include <linux/errno.h>
#include <linux/ioport.h> /* for struct resource */
#include <linux/device.h>
+#include <linux/property.h>
#ifndef _LINUX
#define _LINUX
@@ -71,6 +72,7 @@ enum acpi_irq_model_id {
ACPI_IRQ_MODEL_IOAPIC,
ACPI_IRQ_MODEL_IOSAPIC,
ACPI_IRQ_MODEL_PLATFORM,
+ ACPI_IRQ_MODEL_GIC,
ACPI_IRQ_MODEL_COUNT
};
@@ -123,6 +125,10 @@ int acpi_numa_init (void);
int acpi_table_init (void);
int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
+int __init acpi_parse_entries(unsigned long table_size,
+ acpi_tbl_entry_handler handler,
+ struct acpi_table_header *table_header,
+ int entry_id, unsigned int max_entries);
int __init acpi_table_parse_entries(char *id, unsigned long table_size,
int entry_id,
acpi_tbl_entry_handler handler,
@@ -423,12 +429,8 @@ extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
const struct device *dev);
-static inline bool acpi_driver_match_device(struct device *dev,
- const struct device_driver *drv)
-{
- return !!acpi_match_device(drv->acpi_match_table, dev);
-}
-
+extern bool acpi_driver_match_device(struct device *dev,
+ const struct device_driver *drv);
int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
int acpi_device_modalias(struct device *, char *, int);
@@ -443,6 +445,23 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *);
#define ACPI_COMPANION_SET(dev, adev) do { } while (0)
#define ACPI_HANDLE(dev) (NULL)
+struct fwnode_handle;
+
+static inline bool is_acpi_node(struct fwnode_handle *fwnode)
+{
+ return false;
+}
+
+static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode)
+{
+ return NULL;
+}
+
+static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
+{
+ return NULL;
+}
+
static inline const char *acpi_dev_name(struct acpi_device *adev)
{
return NULL;
@@ -659,4 +678,114 @@ do { \
#endif
#endif
+struct acpi_gpio_params {
+ unsigned int crs_entry_index;
+ unsigned int line_index;
+ bool active_low;
+};
+
+struct acpi_gpio_mapping {
+ const char *name;
+ const struct acpi_gpio_params *data;
+ unsigned int size;
+};
+
+#if defined(CONFIG_ACPI) && defined(CONFIG_GPIOLIB)
+int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios);
+
+static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev)
+{
+ if (adev)
+ adev->driver_gpios = NULL;
+}
+#else
+static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ return -ENXIO;
+}
+static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev) {}
+#endif
+
+/* Device properties */
+
+#define MAX_ACPI_REFERENCE_ARGS 8
+struct acpi_reference_args {
+ struct acpi_device *adev;
+ size_t nargs;
+ u64 args[MAX_ACPI_REFERENCE_ARGS];
+};
+
+#ifdef CONFIG_ACPI
+int acpi_dev_get_property(struct acpi_device *adev, const char *name,
+ acpi_object_type type, const union acpi_object **obj);
+int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
+ acpi_object_type type,
+ const union acpi_object **obj);
+int acpi_dev_get_property_reference(struct acpi_device *adev,
+ const char *name, size_t index,
+ struct acpi_reference_args *args);
+
+int acpi_dev_prop_get(struct acpi_device *adev, const char *propname,
+ void **valptr);
+int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
+ enum dev_prop_type proptype, void *val);
+int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
+ enum dev_prop_type proptype, void *val, size_t nval);
+
+struct acpi_device *acpi_get_next_child(struct device *dev,
+ struct acpi_device *child);
+#else
+static inline int acpi_dev_get_property(struct acpi_device *adev,
+ const char *name, acpi_object_type type,
+ const union acpi_object **obj)
+{
+ return -ENXIO;
+}
+static inline int acpi_dev_get_property_array(struct acpi_device *adev,
+ const char *name,
+ acpi_object_type type,
+ const union acpi_object **obj)
+{
+ return -ENXIO;
+}
+static inline int acpi_dev_get_property_reference(struct acpi_device *adev,
+ const char *name, const char *cells_name,
+ size_t index, struct acpi_reference_args *args)
+{
+ return -ENXIO;
+}
+
+static inline int acpi_dev_prop_get(struct acpi_device *adev,
+ const char *propname,
+ void **valptr)
+{
+ return -ENXIO;
+}
+
+static inline int acpi_dev_prop_read_single(struct acpi_device *adev,
+ const char *propname,
+ enum dev_prop_type proptype,
+ void *val)
+{
+ return -ENXIO;
+}
+
+static inline int acpi_dev_prop_read(struct acpi_device *adev,
+ const char *propname,
+ enum dev_prop_type proptype,
+ void *val, size_t nval)
+{
+ return -ENXIO;
+}
+
+static inline struct acpi_device *acpi_get_next_child(struct device *dev,
+ struct acpi_device *child)
+{
+ return NULL;
+}
+
+#endif
+
#endif /*_LINUX_ACPI_H*/
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index abcafaa..4f5caa1 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -346,4 +346,10 @@ extern void clocksource_of_init(void);
static inline void clocksource_of_init(void) {}
#endif
+#ifdef CONFIG_ACPI
+void acpi_generic_timer_init(void);
+#else
+static inline void acpi_generic_timer_init(void) {}
+#endif
+
#endif /* _LINUX_CLOCKSOURCE_H */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 0949f9c..0238d61 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -547,6 +547,9 @@ void efi_native_runtime_setup(void);
#define SMBIOS_TABLE_GUID \
EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
+#define SMBIOS3_TABLE_GUID \
+ EFI_GUID( 0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 )
+
#define SAL_SYSTEM_TABLE_GUID \
EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
@@ -810,7 +813,8 @@ extern struct efi {
unsigned long mps; /* MPS table */
unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
unsigned long acpi20; /* ACPI table (ACPI 2.0) */
- unsigned long smbios; /* SM BIOS table */
+ unsigned long smbios; /* SMBIOS table (32 bit entry point) */
+ unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
unsigned long sal_systab; /* SAL system table */
unsigned long boot_info; /* boot info table */
unsigned long hcdp; /* HCDP table */
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 12f146f..00b1b70 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -94,6 +94,13 @@ int gpiod_to_irq(const struct gpio_desc *desc);
struct gpio_desc *gpio_to_desc(unsigned gpio);
int desc_to_gpio(const struct gpio_desc *desc);
+/* Child properties interface */
+struct fwnode_handle;
+
+struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
+ const char *propname);
+struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
+ struct fwnode_handle *child);
#else /* CONFIG_GPIOLIB */
static inline struct gpio_desc *__must_check __gpiod_get(struct device *dev,
diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
index 8b62246..ee2d8c6 100644
--- a/include/linux/gpio_keys.h
+++ b/include/linux/gpio_keys.h
@@ -2,6 +2,7 @@
#define _GPIO_KEYS_H
struct device;
+struct gpio_desc;
/**
* struct gpio_keys_button - configuration parameters
@@ -17,6 +18,7 @@ struct device;
* disable button via sysfs
* @value: axis value for %EV_ABS
* @irq: Irq number in case of interrupt keys
+ * @gpiod: GPIO descriptor
*/
struct gpio_keys_button {
unsigned int code;
@@ -29,6 +31,7 @@ struct gpio_keys_button {
bool can_disable;
int value;
unsigned int irq;
+ struct gpio_desc *gpiod;
};
/**
diff --git a/include/linux/irqchip/arm-gic-acpi.h b/include/linux/irqchip/arm-gic-acpi.h
new file mode 100644
index 0000000..ad5b577
--- /dev/null
+++ b/include/linux/irqchip/arm-gic-acpi.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2014, Linaro Ltd.
+ * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef ARM_GIC_ACPI_H_
+#define ARM_GIC_ACPI_H_
+
+#ifdef CONFIG_ACPI
+
+/*
+ * Hard code here, we can not get memory size from MADT (but FDT does),
+ * Actually no need to do that, because this size can be inferred
+ * from GIC spec.
+ */
+#define ACPI_GICV2_DIST_MEM_SIZE (SZ_4K)
+#define ACPI_GIC_CPU_IF_MEM_SIZE (SZ_8K)
+
+struct acpi_table_header;
+
+void acpi_gic_init(void);
+int gic_v2_acpi_init(struct acpi_table_header *table);
+#else
+static inline void acpi_gic_init(void) { }
+#endif
+
+#endif /* ARM_GIC_ACPI_H_ */
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index 13eed92..dc9cb5f 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -55,6 +55,8 @@
(GICD_INT_DEF_PRI << 8) |\
GICD_INT_DEF_PRI)
+#define GIC_DIST_SOFTINT_NSATT 0x8000
+
#define GICH_HCR 0x0
#define GICH_VTR 0x4
#define GICH_VMCR 0x8
diff --git a/include/linux/leds.h b/include/linux/leds.h
index a57611d..361101f 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -261,6 +261,7 @@ struct gpio_led {
unsigned retain_state_suspended : 1;
unsigned default_state : 2;
/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */
+ struct gpio_desc *gpiod;
};
#define LEDS_GPIO_DEFSTATE_OFF 0
#define LEDS_GPIO_DEFSTATE_ON 1
@@ -273,7 +274,7 @@ struct gpio_led_platform_data {
#define GPIO_LED_NO_BLINK_LOW 0 /* No blink GPIO state low */
#define GPIO_LED_NO_BLINK_HIGH 1 /* No blink GPIO state high */
#define GPIO_LED_BLINK 2 /* Please, blink */
- int (*gpio_blink_set)(unsigned gpio, int state,
+ int (*gpio_blink_set)(struct gpio_desc *desc, int state,
unsigned long *delay_on,
unsigned long *delay_off);
};
diff --git a/include/linux/of.h b/include/linux/of.h
index 29f0adc..cf79be1 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -23,6 +23,7 @@
#include <linux/spinlock.h>
#include <linux/topology.h>
#include <linux/notifier.h>
+#include <linux/property.h>
#include <asm/byteorder.h>
#include <asm/errno.h>
@@ -49,6 +50,7 @@ struct device_node {
const char *type;
phandle phandle;
const char *full_name;
+ struct fwnode_handle fwnode;
struct property *properties;
struct property *deadprops; /* removed properties */
@@ -79,6 +81,7 @@ extern struct kobj_type of_node_ktype;
static inline void of_node_init(struct device_node *node)
{
kobject_init(&node->kobj, &of_node_ktype);
+ node->fwnode.type = FWNODE_OF;
}
/* true when node is initialized */
@@ -114,6 +117,16 @@ extern struct device_node *of_aliases;
extern struct device_node *of_stdout;
extern raw_spinlock_t devtree_lock;
+static inline bool is_of_node(struct fwnode_handle *fwnode)
+{
+ return fwnode && fwnode->type == FWNODE_OF;
+}
+
+static inline struct device_node *of_node(struct fwnode_handle *fwnode)
+{
+ return fwnode ? container_of(fwnode, struct device_node, fwnode) : NULL;
+}
+
static inline bool of_have_populated_dt(void)
{
return of_allnodes != NULL;
@@ -263,6 +276,10 @@ extern int of_property_read_u32_array(const struct device_node *np,
size_t sz);
extern int of_property_read_u64(const struct device_node *np,
const char *propname, u64 *out_value);
+extern int of_property_read_u64_array(const struct device_node *np,
+ const char *propname,
+ u64 *out_values,
+ size_t sz);
extern int of_property_read_string(struct device_node *np,
const char *propname,
@@ -355,6 +372,16 @@ bool of_console_check(struct device_node *dn, char *name, int index);
#else /* CONFIG_OF */
+static inline bool is_of_node(struct fwnode_handle *fwnode)
+{
+ return false;
+}
+
+static inline struct device_node *of_node(struct fwnode_handle *fwnode)
+{
+ return NULL;
+}
+
static inline const char* of_node_full_name(const struct device_node *np)
{
return "<no-node>";
@@ -477,6 +504,13 @@ static inline int of_property_read_u32_array(const struct device_node *np,
return -ENOSYS;
}
+static inline int of_property_read_u64_array(const struct device_node *np,
+ const char *propname,
+ u64 *out_values, size_t sz)
+{
+ return -ENOSYS;
+}
+
static inline int of_property_read_string(struct device_node *np,
const char *propname,
const char **out_string)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 5be8db4..6afba72 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -562,15 +562,6 @@ struct pci_ops {
int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
};
-/*
- * ACPI needs to be able to access PCI config space before we've done a
- * PCI bus scan and created pci_bus structures.
- */
-int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
- int reg, int len, u32 *val);
-int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
- int reg, int len, u32 val);
-
struct pci_bus_region {
dma_addr_t start;
dma_addr_t end;
@@ -1325,6 +1316,16 @@ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
unsigned int command_bits, u32 flags);
void pci_register_set_vga_state(arch_set_vga_state_t func);
+/*
+ * ACPI needs to be able to access PCI config space before we've done a
+ * PCI bus scan and created pci_bus structures.
+ */
+int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 *val);
+int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 val);
+void pcibios_penalize_isa_irq(int irq, int active);
+
#else /* CONFIG_PCI is not enabled */
/*
@@ -1426,6 +1427,23 @@ static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
unsigned int devfn)
{ return NULL; }
+static inline struct pci_bus *pci_find_bus(int domain, int busnr)
+{ return NULL; }
+
+static inline int pci_bus_write_config_byte(struct pci_bus *bus,
+ unsigned int devfn, int where, u8 val)
+{ return -ENOSYS; }
+
+static inline int raw_pci_read(unsigned int domain, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *val)
+{ return -ENOSYS; }
+
+static inline int raw_pci_write(unsigned int domain, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 val)
+{ return -ENOSYS; }
+
+static inline void pcibios_penalize_isa_irq(int irq, int active) { }
+
static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; }
static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }
@@ -1635,7 +1653,6 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev,
enum pcie_reset_state state);
int pcibios_add_device(struct pci_dev *dev);
void pcibios_release_device(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq, int active);
#ifdef CONFIG_HIBERNATE_CALLBACKS
extern struct dev_pm_ops pcibios_pm_ops;
diff --git a/include/linux/property.h b/include/linux/property.h
new file mode 100644
index 0000000..a6a3d98
--- /dev/null
+++ b/include/linux/property.h
@@ -0,0 +1,143 @@
+/*
+ * property.h - Unified device property interface.
+ *
+ * Copyright (C) 2014, Intel Corporation
+ * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_PROPERTY_H_
+#define _LINUX_PROPERTY_H_
+
+#include <linux/types.h>
+
+struct device;
+
+enum dev_prop_type {
+ DEV_PROP_U8,
+ DEV_PROP_U16,
+ DEV_PROP_U32,
+ DEV_PROP_U64,
+ DEV_PROP_STRING,
+ DEV_PROP_MAX,
+};
+
+bool device_property_present(struct device *dev, const char *propname);
+int device_property_read_u8_array(struct device *dev, const char *propname,
+ u8 *val, size_t nval);
+int device_property_read_u16_array(struct device *dev, const char *propname,
+ u16 *val, size_t nval);
+int device_property_read_u32_array(struct device *dev, const char *propname,
+ u32 *val, size_t nval);
+int device_property_read_u64_array(struct device *dev, const char *propname,
+ u64 *val, size_t nval);
+int device_property_read_string_array(struct device *dev, const char *propname,
+ const char **val, size_t nval);
+int device_property_read_string(struct device *dev, const char *propname,
+ const char **val);
+
+enum fwnode_type {
+ FWNODE_INVALID = 0,
+ FWNODE_OF,
+ FWNODE_ACPI,
+};
+
+struct fwnode_handle {
+ enum fwnode_type type;
+};
+
+bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname);
+int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
+ const char *propname, u8 *val,
+ size_t nval);
+int fwnode_property_read_u16_array(struct fwnode_handle *fwnode,
+ const char *propname, u16 *val,
+ size_t nval);
+int fwnode_property_read_u32_array(struct fwnode_handle *fwnode,
+ const char *propname, u32 *val,
+ size_t nval);
+int fwnode_property_read_u64_array(struct fwnode_handle *fwnode,
+ const char *propname, u64 *val,
+ size_t nval);
+int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
+ const char *propname, const char **val,
+ size_t nval);
+int fwnode_property_read_string(struct fwnode_handle *fwnode,
+ const char *propname, const char **val);
+
+struct fwnode_handle *device_get_next_child_node(struct device *dev,
+ struct fwnode_handle *child);
+
+#define device_for_each_child_node(dev, child) \
+ for (child = device_get_next_child_node(dev, NULL); child; \
+ child = device_get_next_child_node(dev, child))
+
+void fwnode_handle_put(struct fwnode_handle *fwnode);
+
+unsigned int device_get_child_node_count(struct device *dev);
+
+static inline bool device_property_read_bool(struct device *dev,
+ const char *propname)
+{
+ return device_property_present(dev, propname);
+}
+
+static inline int device_property_read_u8(struct device *dev,
+ const char *propname, u8 *val)
+{
+ return device_property_read_u8_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u16(struct device *dev,
+ const char *propname, u16 *val)
+{
+ return device_property_read_u16_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u32(struct device *dev,
+ const char *propname, u32 *val)
+{
+ return device_property_read_u32_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u64(struct device *dev,
+ const char *propname, u64 *val)
+{
+ return device_property_read_u64_array(dev, propname, val, 1);
+}
+
+static inline bool fwnode_property_read_bool(struct fwnode_handle *fwnode,
+ const char *propname)
+{
+ return fwnode_property_present(fwnode, propname);
+}
+
+static inline int fwnode_property_read_u8(struct fwnode_handle *fwnode,
+ const char *propname, u8 *val)
+{
+ return fwnode_property_read_u8_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u16(struct fwnode_handle *fwnode,
+ const char *propname, u16 *val)
+{
+ return fwnode_property_read_u16_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u32(struct fwnode_handle *fwnode,
+ const char *propname, u32 *val)
+{
+ return fwnode_property_read_u32_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u64(struct fwnode_handle *fwnode,
+ const char *propname, u64 *val)
+{
+ return fwnode_property_read_u64_array(fwnode, propname, val, 1);
+}
+
+#endif /* _LINUX_PROPERTY_H_ */
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 0f62326..2a47179 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -63,6 +63,15 @@ static const struct rfkill_ops rfkill_gpio_ops = {
.set_block = rfkill_gpio_set_power,
};
+static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
+static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false };
+
+static const struct acpi_gpio_mapping acpi_rfkill_default_gpios[] = {
+ { "reset-gpios", &reset_gpios, 1 },
+ { "shutdown-gpios", &shutdown_gpios, 1 },
+ { },
+};
+
static int rfkill_gpio_acpi_probe(struct device *dev,
struct rfkill_gpio_data *rfkill)
{
@@ -75,7 +84,8 @@ static int rfkill_gpio_acpi_probe(struct device *dev,
rfkill->name = dev_name(dev);
rfkill->type = (unsigned)id->driver_data;
- return 0;
+ return acpi_dev_add_driver_gpios(ACPI_COMPANION(dev),
+ acpi_rfkill_default_gpios);
}
static int rfkill_gpio_probe(struct platform_device *pdev)
@@ -102,7 +112,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
rfkill->clk = devm_clk_get(&pdev->dev, NULL);
- gpio = devm_gpiod_get_index(&pdev->dev, "reset", 0);
+ gpio = devm_gpiod_get(&pdev->dev, "reset");
if (!IS_ERR(gpio)) {
ret = gpiod_direction_output(gpio, 0);
if (ret)
@@ -110,7 +120,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
rfkill->reset_gpio = gpio;
}
- gpio = devm_gpiod_get_index(&pdev->dev, "shutdown", 1);
+ gpio = devm_gpiod_get(&pdev->dev, "shutdown");
if (!IS_ERR(gpio)) {
ret = gpiod_direction_output(gpio, 0);
if (ret)
@@ -150,6 +160,8 @@ static int rfkill_gpio_remove(struct platform_device *pdev)
rfkill_unregister(rfkill->rfkill_dev);
rfkill_destroy(rfkill->rfkill_dev);
+ acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev));
+
return 0;
}
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 22fa819..9cd5dbd 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -21,9 +21,11 @@
#include <linux/kvm.h>
#include <linux/kvm_host.h>
#include <linux/interrupt.h>
+#include <linux/acpi.h>
#include <clocksource/arm_arch_timer.h>
#include <asm/arch_timer.h>
+#include <asm/acpi.h>
#include <kvm/arm_vgic.h>
#include <kvm/arm_arch_timer.h>
@@ -244,60 +246,92 @@ static const struct of_device_id arch_timer_of_match[] = {
{},
};
-int kvm_timer_hyp_init(void)
+static int kvm_timer_ppi_parse_dt(unsigned int *ppi)
{
struct device_node *np;
- unsigned int ppi;
- int err;
-
- timecounter = arch_timer_get_timecounter();
- if (!timecounter)
- return -ENODEV;
np = of_find_matching_node(NULL, arch_timer_of_match);
if (!np) {
- kvm_err("kvm_arch_timer: can't find DT node\n");
return -ENODEV;
}
- ppi = irq_of_parse_and_map(np, 2);
- if (!ppi) {
- kvm_err("kvm_arch_timer: no virtual timer interrupt\n");
- err = -EINVAL;
- goto out;
+ *ppi = irq_of_parse_and_map(np, 2);
+ if (*ppi == 0) {
+ of_node_put(np);
+ return -EINVAL;
}
- err = request_percpu_irq(ppi, kvm_arch_timer_handler,
- "kvm guest timer", kvm_get_running_vcpus());
- if (err) {
- kvm_err("kvm_arch_timer: can't request interrupt %d (%d)\n",
- ppi, err);
- goto out;
- }
+ return 0;
+}
- host_vtimer_irq = ppi;
+extern int acadia_kvm_acpi;
+extern int arch_timer_ppi[];
- err = __register_cpu_notifier(&kvm_timer_cpu_nb);
- if (err) {
- kvm_err("Cannot register timer CPU notifier\n");
- goto out_free;
- }
+static int kvm_timer_ppi_parse_acpi(unsigned int *ppi)
- wqueue = create_singlethread_workqueue("kvm_arch_timer");
- if (!wqueue) {
- err = -ENOMEM;
- goto out_free;
- }
+{
+ /* retrieve VIRT_PPI info */
+ *ppi = arch_timer_ppi[2];
- kvm_info("%s IRQ%d\n", np->name, ppi);
- on_each_cpu(kvm_timer_init_interrupt, NULL, 1);
+ if (*ppi == 0)
+ return -EINVAL;
+ else
+ return 0;
+}
+
+int kvm_timer_hyp_init(void)
+{
+ unsigned int ppi;
+ int err;
+
+ timecounter = arch_timer_get_timecounter();
+ if (!timecounter)
+ return -ENODEV;
+
+ /* PPI DT parsing */
+ err = kvm_timer_ppi_parse_dt(&ppi);
- goto out;
+ /* if DT parsing fails, try ACPI next */
+ if (err && !acpi_disabled && acadia_kvm_acpi )
+ err = kvm_timer_ppi_parse_acpi(&ppi);
+
+ if (err) {
+ kvm_err("kvm_timer_hyp_init: can't find virtual timer info or "
+ "config virtual timer interrupt\n");
+ return err;
+ }
+
+ /* configure IRQ handler */
+ err = request_percpu_irq(ppi, kvm_arch_timer_handler,
+ "kvm guest timer", kvm_get_running_vcpus());
+ if (err) {
+ kvm_err("kvm_arch_timer: can't request interrupt %d (%d)\n",
+ ppi, err);
+ goto out;
+ }
+
+ host_vtimer_irq = ppi;
+
+ err = __register_cpu_notifier(&kvm_timer_cpu_nb);
+ if (err) {
+ kvm_err("Cannot register timer CPU notifier\n");
+ goto out_free;
+ }
+
+ wqueue = create_singlethread_workqueue("kvm_arch_timer");
+ if (!wqueue) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ kvm_info("timer IRQ%d\n", ppi);
+ on_each_cpu(kvm_timer_init_interrupt, NULL, 1);
+
+ goto out;
out_free:
- free_percpu_irq(ppi, kvm_get_running_vcpus());
+ free_percpu_irq(ppi, kvm_get_running_vcpus());
out:
- of_node_put(np);
- return err;
+ return err;
}
void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu)
diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c
index 2935405..196f49e 100644
--- a/virt/kvm/arm/vgic-v2.c
+++ b/virt/kvm/arm/vgic-v2.c
@@ -19,6 +19,7 @@
#include <linux/kvm.h>
#include <linux/kvm_host.h>
#include <linux/interrupt.h>
+#include <linux/acpi.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
@@ -26,6 +27,7 @@
#include <linux/irqchip/arm-gic.h>
+#include <asm/acpi.h>
#include <asm/kvm_emulate.h>
#include <asm/kvm_arm.h>
#include <asm/kvm_mmu.h>
@@ -159,7 +161,7 @@ static const struct vgic_ops vgic_v2_ops = {
static struct vgic_params vgic_v2_params;
/**
- * vgic_v2_probe - probe for a GICv2 compatible interrupt controller in DT
+ * vgic_v2_dt_probe - probe for a GICv2 compatible interrupt controller in DT
* @node: pointer to the DT node
* @ops: address of a pointer to the GICv2 operations
* @params: address of a pointer to HW-specific parameters
@@ -168,7 +170,7 @@ static struct vgic_params vgic_v2_params;
* in *ops and the HW parameters in *params. Returns an error code
* otherwise.
*/
-int vgic_v2_probe(struct device_node *vgic_node,
+int vgic_v2_dt_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params)
{
@@ -245,3 +247,72 @@ out:
of_node_put(vgic_node);
return ret;
}
+
+struct acpi_madt_generic_interrupt *vgic_acpi;
+static void gic_get_acpi_header(struct acpi_subtable_header *header)
+{
+ vgic_acpi = (struct acpi_madt_generic_interrupt *)header;
+}
+
+int vgic_v2_acpi_probe(const struct vgic_ops **ops,
+ const struct vgic_params **params)
+{
+ struct vgic_params *vgic = &vgic_v2_params;
+ int irq_mode, ret;
+
+ /* MADT table */
+ ret = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+ (acpi_tbl_entry_handler)gic_get_acpi_header, 0);
+ if (!ret) {
+ pr_err("Failed to get MADT VGIC CPU entry\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* IRQ trigger mode */
+ irq_mode = (vgic_acpi->flags & ACPI_MADT_VGIC_IRQ_MODE) ?
+ ACPI_EDGE_SENSITIVE : ACPI_LEVEL_SENSITIVE;
+ /* According to GIC-400 manual, all PPIs are active-LOW, level
+ * sensative. We register IRQ as active-low.
+ */
+ vgic->maint_irq = acpi_register_gsi(NULL, vgic_acpi->vgic_interrupt,
+ irq_mode, ACPI_ACTIVE_LOW);
+ if (!vgic->maint_irq) {
+ pr_err("Cannot register VGIC ACPI maintenance irq\n");
+ ret = -ENXIO;
+ goto out;
+ }
+
+ /* GICH resource */
+ vgic->vctrl_base = ioremap(vgic_acpi->gich_base_address, SZ_8K);
+ if (!vgic->vctrl_base) {
+ pr_err("cannot ioremap GICH memory\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ vgic->nr_lr = readl_relaxed(vgic->vctrl_base + GICH_VTR);
+ vgic->nr_lr = (vgic->nr_lr & 0x3f) + 1;
+
+ ret = create_hyp_io_mappings(vgic->vctrl_base,
+ vgic->vctrl_base + SZ_8K,
+ vgic_acpi->gich_base_address);
+ if (ret) {
+ kvm_err("Cannot map GICH into hyp\n");
+ goto out;
+ }
+
+ vgic->vcpu_base = vgic_acpi->gicv_base_address;
+
+ kvm_info("GICH base=0x%llx, GICV base=0x%llx, IRQ=%d\n",
+ (unsigned long long)vgic_acpi->gich_base_address,
+ (unsigned long long)vgic_acpi->gicv_base_address,
+ vgic->maint_irq);
+
+ vgic->type = VGIC_V2;
+ *ops = &vgic_v2_ops;
+ *params = vgic;
+
+out:
+ return ret;
+}
diff --git a/virt/kvm/arm/vgic-v3.c b/virt/kvm/arm/vgic-v3.c
index 1c2c8ee..8b56920 100644
--- a/virt/kvm/arm/vgic-v3.c
+++ b/virt/kvm/arm/vgic-v3.c
@@ -173,7 +173,7 @@ static const struct vgic_ops vgic_v3_ops = {
static struct vgic_params vgic_v3_params;
/**
- * vgic_v3_probe - probe for a GICv3 compatible interrupt controller in DT
+ * vgic_v3_dt_probe - probe for a GICv3 compatible interrupt controller in DT
* @node: pointer to the DT node
* @ops: address of a pointer to the GICv3 operations
* @params: address of a pointer to HW-specific parameters
@@ -182,9 +182,9 @@ static struct vgic_params vgic_v3_params;
* in *ops and the HW parameters in *params. Returns an error code
* otherwise.
*/
-int vgic_v3_probe(struct device_node *vgic_node,
- const struct vgic_ops **ops,
- const struct vgic_params **params)
+int vgic_v3_dt_probe(struct device_node *vgic_node,
+ const struct vgic_ops **ops,
+ const struct vgic_params **params)
{
int ret = 0;
u32 gicv_idx;
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 3aaca49..f6e9922 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -25,9 +25,11 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/uaccess.h>
+#include <linux/acpi.h>
#include <linux/irqchip/arm-gic.h>
+#include <asm/acpi.h>
#include <asm/kvm_emulate.h>
#include <asm/kvm_arm.h>
#include <asm/kvm_mmu.h>
@@ -2427,31 +2429,39 @@ static struct notifier_block vgic_cpu_nb = {
};
static const struct of_device_id vgic_ids[] = {
- { .compatible = "arm,cortex-a15-gic", .data = vgic_v2_probe, },
- { .compatible = "arm,gic-v3", .data = vgic_v3_probe, },
+ { .compatible = "arm,cortex-a15-gic", .data = vgic_v2_dt_probe, },
+ { .compatible = "arm,gic-v3", .data = vgic_v3_dt_probe, },
{},
};
+extern int acadia_kvm_acpi;
+
int kvm_vgic_hyp_init(void)
{
const struct of_device_id *matched_id;
const int (*vgic_probe)(struct device_node *,const struct vgic_ops **,
const struct vgic_params **);
struct device_node *vgic_node;
- int ret;
+ int ret = -ENODEV;
- vgic_node = of_find_matching_node_and_match(NULL,
- vgic_ids, &matched_id);
- if (!vgic_node) {
- kvm_err("error: no compatible GIC node found\n");
- return -ENODEV;
+ /* probe VGIC */
+ if (vgic_node = of_find_matching_node_and_match(NULL,
+ vgic_ids, &matched_id)) {
+ /* probe VGIC in DT */
+ vgic_probe = matched_id->data;
+ ret = vgic_probe(vgic_node, &vgic_ops, &vgic);
+ }
+ else if (!acpi_disabled && acadia_kvm_acpi) {
+ /* probe VGIC in ACPI */
+ ret = vgic_v2_acpi_probe(&vgic_ops, &vgic);
}
- vgic_probe = matched_id->data;
- ret = vgic_probe(vgic_node, &vgic_ops, &vgic);
- if (ret)
+ if (ret) {
+ kvm_err("error: no compatible GIC info found\n");
return ret;
+ }
+ /* configuration */
ret = request_percpu_irq(vgic->maint_irq, vgic_maintenance_handler,
"vgic", kvm_get_running_vcpus());
if (ret) {
Reference in New Issue View Git Blame Copy Permalink