468 lines
12 KiB
C
468 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* pata_artop.c - ARTOP ATA controller driver
|
|
*
|
|
* (C) 2006 Red Hat
|
|
* (C) 2007,2011 Bartlomiej Zolnierkiewicz
|
|
*
|
|
* Based in part on drivers/ide/pci/aec62xx.c
|
|
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
|
|
* 865/865R fixes for Macintosh card version from a patch to the old
|
|
* driver by Thibaut VARENE <varenet@parisc-linux.org>
|
|
* When setting the PCI latency we must set 0x80 or higher for burst
|
|
* performance Alessandro Zummo <alessandro.zummo@towertech.it>
|
|
*
|
|
* TODO
|
|
* Investigate no_dsc on 850R
|
|
* Clock detect
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/device.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <linux/libata.h>
|
|
#include <linux/ata.h>
|
|
|
|
#define DRV_NAME "pata_artop"
|
|
#define DRV_VERSION "0.4.8"
|
|
|
|
/*
|
|
* The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
|
|
* get PCI bus speed functionality we leave this as 0. Its a variable
|
|
* for when we get the functionality and also for folks wanting to
|
|
* test stuff.
|
|
*/
|
|
|
|
static int clock = 0;
|
|
|
|
/**
|
|
* artop62x0_pre_reset - probe begin
|
|
* @link: link
|
|
* @deadline: deadline jiffies for the operation
|
|
*
|
|
* Nothing complicated needed here.
|
|
*/
|
|
|
|
static int artop62x0_pre_reset(struct ata_link *link, unsigned long deadline)
|
|
{
|
|
static const struct pci_bits artop_enable_bits[] = {
|
|
{ 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
|
|
{ 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
|
|
};
|
|
|
|
struct ata_port *ap = link->ap;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
|
|
/* Odd numbered device ids are the units with enable bits. */
|
|
if ((pdev->device & 1) &&
|
|
!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
|
|
return -ENOENT;
|
|
|
|
return ata_sff_prereset(link, deadline);
|
|
}
|
|
|
|
/**
|
|
* artop6260_cable_detect - identify cable type
|
|
* @ap: Port
|
|
*
|
|
* Identify the cable type for the ARTOP interface in question
|
|
*/
|
|
|
|
static int artop6260_cable_detect(struct ata_port *ap)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
u8 tmp;
|
|
pci_read_config_byte(pdev, 0x49, &tmp);
|
|
if (tmp & (1 << ap->port_no))
|
|
return ATA_CBL_PATA40;
|
|
return ATA_CBL_PATA80;
|
|
}
|
|
|
|
/**
|
|
* artop6210_load_piomode - Load a set of PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device
|
|
* @pio: PIO mode
|
|
*
|
|
* Set PIO mode for device, in host controller PCI config space. This
|
|
* is used both to set PIO timings in PIO mode and also to set the
|
|
* matching PIO clocking for UDMA, as well as the MWDMA timings.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int dn = adev->devno + 2 * ap->port_no;
|
|
static const u16 timing[2][5] = {
|
|
{ 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
|
|
{ 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
|
|
|
|
};
|
|
/* Load the PIO timing active/recovery bits */
|
|
pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
|
|
}
|
|
|
|
/**
|
|
* artop6210_set_piomode - Initialize host controller PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device we are configuring
|
|
*
|
|
* Set PIO mode for device, in host controller PCI config space. For
|
|
* ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
|
|
* the event UDMA is used the later call to set_dmamode will set the
|
|
* bits as required.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int dn = adev->devno + 2 * ap->port_no;
|
|
u8 ultra;
|
|
|
|
artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
|
|
|
|
/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
|
|
pci_read_config_byte(pdev, 0x54, &ultra);
|
|
ultra &= ~(3 << (2 * dn));
|
|
pci_write_config_byte(pdev, 0x54, ultra);
|
|
}
|
|
|
|
/**
|
|
* artop6260_load_piomode - Initialize host controller PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device we are configuring
|
|
* @pio: PIO mode
|
|
*
|
|
* Set PIO mode for device, in host controller PCI config space. The
|
|
* ARTOP6260 and relatives store the timing data differently.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int dn = adev->devno + 2 * ap->port_no;
|
|
static const u8 timing[2][5] = {
|
|
{ 0x00, 0x0A, 0x08, 0x33, 0x31 },
|
|
{ 0x70, 0x7A, 0x78, 0x43, 0x41 }
|
|
|
|
};
|
|
/* Load the PIO timing active/recovery bits */
|
|
pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
|
|
}
|
|
|
|
/**
|
|
* artop6260_set_piomode - Initialize host controller PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device we are configuring
|
|
*
|
|
* Set PIO mode for device, in host controller PCI config space. For
|
|
* ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
|
|
* the event UDMA is used the later call to set_dmamode will set the
|
|
* bits as required.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
u8 ultra;
|
|
|
|
artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
|
|
|
|
/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
|
|
pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
|
|
ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
|
|
pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
|
|
}
|
|
|
|
/**
|
|
* artop6210_set_dmamode - Initialize host controller PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device whose timings we are configuring
|
|
*
|
|
* Set DMA mode for device, in host controller PCI config space.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
unsigned int pio;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int dn = adev->devno + 2 * ap->port_no;
|
|
u8 ultra;
|
|
|
|
if (adev->dma_mode == XFER_MW_DMA_0)
|
|
pio = 1;
|
|
else
|
|
pio = 4;
|
|
|
|
/* Load the PIO timing active/recovery bits */
|
|
artop6210_load_piomode(ap, adev, pio);
|
|
|
|
pci_read_config_byte(pdev, 0x54, &ultra);
|
|
ultra &= ~(3 << (2 * dn));
|
|
|
|
/* Add ultra DMA bits if in UDMA mode */
|
|
if (adev->dma_mode >= XFER_UDMA_0) {
|
|
u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
|
|
if (mode == 0)
|
|
mode = 1;
|
|
ultra |= (mode << (2 * dn));
|
|
}
|
|
pci_write_config_byte(pdev, 0x54, ultra);
|
|
}
|
|
|
|
/**
|
|
* artop6260_set_dmamode - Initialize host controller PATA PIO timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device we are configuring
|
|
*
|
|
* Set DMA mode for device, in host controller PCI config space. The
|
|
* ARTOP6260 and relatives store the timing data differently.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
unsigned int pio;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
u8 ultra;
|
|
|
|
if (adev->dma_mode == XFER_MW_DMA_0)
|
|
pio = 1;
|
|
else
|
|
pio = 4;
|
|
|
|
/* Load the PIO timing active/recovery bits */
|
|
artop6260_load_piomode(ap, adev, pio);
|
|
|
|
/* Add ultra DMA bits if in UDMA mode */
|
|
pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
|
|
ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
|
|
if (adev->dma_mode >= XFER_UDMA_0) {
|
|
u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
|
|
if (mode == 0)
|
|
mode = 1;
|
|
ultra |= (mode << (4 * adev->devno));
|
|
}
|
|
pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
|
|
}
|
|
|
|
/**
|
|
* artop6210_qc_defer - implement serialization
|
|
* @qc: command
|
|
*
|
|
* Issue commands per host on this chip.
|
|
*/
|
|
|
|
static int artop6210_qc_defer(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_host *host = qc->ap->host;
|
|
struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
|
|
int rc;
|
|
|
|
/* First apply the usual rules */
|
|
rc = ata_std_qc_defer(qc);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
/* Now apply serialization rules. Only allow a command if the
|
|
other channel state machine is idle */
|
|
if (alt && alt->qc_active)
|
|
return ATA_DEFER_PORT;
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template artop_sht = {
|
|
ATA_BMDMA_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations artop6210_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.cable_detect = ata_cable_40wire,
|
|
.set_piomode = artop6210_set_piomode,
|
|
.set_dmamode = artop6210_set_dmamode,
|
|
.prereset = artop62x0_pre_reset,
|
|
.qc_defer = artop6210_qc_defer,
|
|
};
|
|
|
|
static struct ata_port_operations artop6260_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.cable_detect = artop6260_cable_detect,
|
|
.set_piomode = artop6260_set_piomode,
|
|
.set_dmamode = artop6260_set_dmamode,
|
|
.prereset = artop62x0_pre_reset,
|
|
};
|
|
|
|
static void atp8xx_fixup(struct pci_dev *pdev)
|
|
{
|
|
u8 reg;
|
|
|
|
switch (pdev->device) {
|
|
case 0x0005:
|
|
/* BIOS may have left us in UDMA, clear it before libata probe */
|
|
pci_write_config_byte(pdev, 0x54, 0);
|
|
break;
|
|
case 0x0008:
|
|
case 0x0009:
|
|
/* Mac systems come up with some registers not set as we
|
|
will need them */
|
|
|
|
/* Clear reset & test bits */
|
|
pci_read_config_byte(pdev, 0x49, ®);
|
|
pci_write_config_byte(pdev, 0x49, reg & ~0x30);
|
|
|
|
/* PCI latency must be > 0x80 for burst mode, tweak it
|
|
* if required.
|
|
*/
|
|
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®);
|
|
if (reg <= 0x80)
|
|
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
|
|
|
|
/* Enable IRQ output and burst mode */
|
|
pci_read_config_byte(pdev, 0x4a, ®);
|
|
pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* artop_init_one - Register ARTOP ATA PCI device with kernel services
|
|
* @pdev: PCI device to register
|
|
* @id: PCI device ID
|
|
*
|
|
* Called from kernel PCI layer.
|
|
*
|
|
* LOCKING:
|
|
* Inherited from PCI layer (may sleep).
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, or -ERRNO value.
|
|
*/
|
|
|
|
static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
static const struct ata_port_info info_6210 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA2,
|
|
.port_ops = &artop6210_ops,
|
|
};
|
|
static const struct ata_port_info info_626x = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA4,
|
|
.port_ops = &artop6260_ops,
|
|
};
|
|
static const struct ata_port_info info_628x = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA5,
|
|
.port_ops = &artop6260_ops,
|
|
};
|
|
static const struct ata_port_info info_628x_fast = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &artop6260_ops,
|
|
};
|
|
const struct ata_port_info *ppi[] = { NULL, NULL };
|
|
int rc;
|
|
|
|
ata_print_version_once(&pdev->dev, DRV_VERSION);
|
|
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
switch (id->driver_data) {
|
|
case 0: /* 6210 variant */
|
|
ppi[0] = &info_6210;
|
|
break;
|
|
case 1: /* 6260 */
|
|
ppi[0] = &info_626x;
|
|
break;
|
|
case 2: /* 6280 or 6280 + fast */
|
|
if (inb(pci_resource_start(pdev, 4)) & 0x10)
|
|
ppi[0] = &info_628x_fast;
|
|
else
|
|
ppi[0] = &info_628x;
|
|
break;
|
|
}
|
|
|
|
BUG_ON(ppi[0] == NULL);
|
|
|
|
atp8xx_fixup(pdev);
|
|
|
|
return ata_pci_bmdma_init_one(pdev, ppi, &artop_sht, NULL, 0);
|
|
}
|
|
|
|
static const struct pci_device_id artop_pci_tbl[] = {
|
|
{ PCI_VDEVICE(ARTOP, 0x0005), 0 },
|
|
{ PCI_VDEVICE(ARTOP, 0x0006), 1 },
|
|
{ PCI_VDEVICE(ARTOP, 0x0007), 1 },
|
|
{ PCI_VDEVICE(ARTOP, 0x0008), 2 },
|
|
{ PCI_VDEVICE(ARTOP, 0x0009), 2 },
|
|
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int atp8xx_reinit_one(struct pci_dev *pdev)
|
|
{
|
|
struct ata_host *host = pci_get_drvdata(pdev);
|
|
int rc;
|
|
|
|
rc = ata_pci_device_do_resume(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
atp8xx_fixup(pdev);
|
|
|
|
ata_host_resume(host);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static struct pci_driver artop_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = artop_pci_tbl,
|
|
.probe = artop_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.suspend = ata_pci_device_suspend,
|
|
.resume = atp8xx_reinit_one,
|
|
#endif
|
|
};
|
|
|
|
module_pci_driver(artop_pci_driver);
|
|
|
|
MODULE_AUTHOR("Alan Cox, Bartlomiej Zolnierkiewicz");
|
|
MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|