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qemu-kvm/SOURCES/kvm-spice-set-device-address-and-device-display-ID-in-QX.patch

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From 2d0261e575197b60fd17850f1079359375fb82a3 Mon Sep 17 00:00:00 2001
From: Danilo de Paula <ddepaula@redhat.com>
Date: Wed, 22 May 2019 20:24:33 +0100
Subject: [PATCH 11/12] spice: set device address and device display ID in QXL
interface
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Danilo de Paula <ddepaula@redhat.com>
Message-id: <20190522202434.2529-2-ddepaula@redhat.com>
Patchwork-id: 88166
O-Subject: [RHEL-8.1.0 qemu-kvm PATCH 1/2] spice: set device address and device display ID in QXL interface
Bugzilla: 1712946
RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Lukáš Hrázký <lhrazky@redhat.com>
Calls the new SPICE QXL interface function spice_qxl_set_device_info to
set the hardware address of the graphics device represented by the QXL
interface (e.g. a PCI path) and the device display IDs (the IDs of the
device's monitors that belong to this QXL interface).
Also stops using the deprecated spice_qxl_set_max_monitors, the new
interface function replaces it.
Signed-off-by: Lukáš Hrázký <lhrazky@redhat.com>
Message-Id: <20190215150919.8263-1-lhrazky@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit be812c0ab7d5ab741d0d87387a75a0e8bb6461e7)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/display/qxl.c | 14 ++++++++++++-
include/ui/spice-display.h | 4 ++++
ui/spice-core.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++
ui/spice-display.c | 11 ++++++++++
4 files changed, 79 insertions(+), 1 deletion(-)
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index e36ef32..b373c50 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -275,7 +275,8 @@ static void qxl_spice_monitors_config_async(PCIQXLDevice *qxl, int replay)
QXL_COOKIE_TYPE_POST_LOAD_MONITORS_CONFIG,
0));
} else {
-#if SPICE_SERVER_VERSION >= 0x000c06 /* release 0.12.6 */
+/* >= release 0.12.6, < release 0.14.2 */
+#if SPICE_SERVER_VERSION >= 0x000c06 && SPICE_SERVER_VERSION < 0x000e02
if (qxl->max_outputs) {
spice_qxl_set_max_monitors(&qxl->ssd.qxl, qxl->max_outputs);
}
@@ -2161,6 +2162,17 @@ static void qxl_realize_common(PCIQXLDevice *qxl, Error **errp)
SPICE_INTERFACE_QXL_MAJOR, SPICE_INTERFACE_QXL_MINOR);
return;
}
+
+#if SPICE_SERVER_VERSION >= 0x000e02 /* release 0.14.2 */
+ char device_address[256] = "";
+ if (qemu_spice_fill_device_address(qxl->vga.con, device_address, 256)) {
+ spice_qxl_set_device_info(&qxl->ssd.qxl,
+ device_address,
+ 0,
+ qxl->max_outputs);
+ }
+#endif
+
qemu_add_vm_change_state_handler(qxl_vm_change_state_handler, qxl);
qxl->update_irq = qemu_bh_new(qxl_update_irq_bh, qxl);
diff --git a/include/ui/spice-display.h b/include/ui/spice-display.h
index 87a84a5..53c3612 100644
--- a/include/ui/spice-display.h
+++ b/include/ui/spice-display.h
@@ -179,3 +179,7 @@ void qemu_spice_wakeup(SimpleSpiceDisplay *ssd);
void qemu_spice_display_start(void);
void qemu_spice_display_stop(void);
int qemu_spice_display_is_running(SimpleSpiceDisplay *ssd);
+
+bool qemu_spice_fill_device_address(QemuConsole *con,
+ char *device_address,
+ size_t size);
diff --git a/ui/spice-core.c b/ui/spice-core.c
index ae8921a..ebc2f09 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -35,6 +35,7 @@
#include "qemu/option.h"
#include "migration/misc.h"
#include "hw/hw.h"
+#include "hw/pci/pci_bus.h"
#include "ui/spice-display.h"
/* core bits */
@@ -872,6 +873,56 @@ bool qemu_spice_have_display_interface(QemuConsole *con)
return false;
}
+/*
+ * Recursively (in reverse order) appends addresses of PCI devices as it moves
+ * up in the PCI hierarchy.
+ *
+ * @returns true on success, false when the buffer wasn't large enough
+ */
+static bool append_pci_address(char *buf, size_t buf_size, const PCIDevice *pci)
+{
+ PCIBus *bus = pci_get_bus(pci);
+ /*
+ * equivalent to if (!pci_bus_is_root(bus)), but the function is not built
+ * with PCI_CONFIG=n, avoid using an #ifdef by checking directly
+ */
+ if (bus->parent_dev != NULL) {
+ append_pci_address(buf, buf_size, bus->parent_dev);
+ }
+
+ size_t len = strlen(buf);
+ ssize_t written = snprintf(buf + len, buf_size - len, "/%02x.%x",
+ PCI_SLOT(pci->devfn), PCI_FUNC(pci->devfn));
+
+ return written > 0 && written < buf_size - len;
+}
+
+bool qemu_spice_fill_device_address(QemuConsole *con,
+ char *device_address,
+ size_t size)
+{
+ DeviceState *dev = DEVICE(object_property_get_link(OBJECT(con),
+ "device",
+ &error_abort));
+ PCIDevice *pci = (PCIDevice *) object_dynamic_cast(OBJECT(dev),
+ TYPE_PCI_DEVICE);
+
+ if (pci == NULL) {
+ warn_report("Setting device address of a display device to SPICE: "
+ "Not a PCI device.");
+ return false;
+ }
+
+ strncpy(device_address, "pci/0000", size);
+ if (!append_pci_address(device_address, size, pci)) {
+ warn_report("Setting device address of a display device to SPICE: "
+ "Too many PCI devices in the chain.");
+ return false;
+ }
+
+ return true;
+}
+
int qemu_spice_add_display_interface(QXLInstance *qxlin, QemuConsole *con)
{
if (g_slist_find(spice_consoles, con)) {
diff --git a/ui/spice-display.c b/ui/spice-display.c
index fe73482..22332f4 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -1115,6 +1115,17 @@ static void qemu_spice_display_init_one(QemuConsole *con)
ssd->qxl.base.sif = &dpy_interface.base;
qemu_spice_add_display_interface(&ssd->qxl, con);
+
+#if SPICE_SERVER_VERSION >= 0x000e02 /* release 0.14.2 */
+ char device_address[256] = "";
+ if (qemu_spice_fill_device_address(con, device_address, 256)) {
+ spice_qxl_set_device_info(&ssd->qxl,
+ device_address,
+ qemu_console_get_head(con),
+ 1);
+ }
+#endif
+
qemu_spice_create_host_memslot(ssd);
register_displaychangelistener(&ssd->dcl);
--
1.8.3.1
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