Add and use vga_default_device patches (requested by Matthew Garrett)
This commit is contained in:
Josh Boyer
parent
435da42e50
commit
bf91a40b0c
@ -740,6 +740,8 @@ Patch21385: libata-disable-runtime-pm-for-hotpluggable-port.patch
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Patch21400: unhandled-irqs-switch-to-polling.patch
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Patch21620: vgaarb-vga_default_device.patch
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Patch22000: weird-root-dentry-name-debug.patch
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#selinux ptrace child permissions
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@ -1435,6 +1437,9 @@ ApplyPatch highbank-export-clock-functions.patch
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#rhbz 806676 807632
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ApplyPatch libata-disable-runtime-pm-for-hotpluggable-port.patch
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#vgaarb patches. blame mjg59
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ApplyPatch vgaarb-vga_default_device.patch
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# END OF PATCH APPLICATIONS
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%endif
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@ -2296,6 +2301,7 @@ fi
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# || ||
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%changelog
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* Mon Apr 16 2012 Josh Boyer <jwboyer@redhat.com>
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- Add and use vga_default_device patches (requested by Matthew Garrett)
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- Enable Apple gmux driver
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* Mon Apr 16 2012 Justin M. Forbes <jforbes@redhat.com> - 3.4.0-0.rc3.git0.2
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552
vgaarb-vga_default_device.patch
Normal file
552
vgaarb-vga_default_device.patch
Normal file
@ -0,0 +1,552 @@
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id 1SJsVA-0003T4-U8; Mon, 16 Apr 2012 21:26:21 +0100
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From: Matthew Garrett <mjg@redhat.com>
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To: linux-kernel@vger.kernel.org
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Cc: Matthew Garrett <mjg@redhat.com>, benh@kernel.crashing.org,
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airlied@redhat.com
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Subject: [PATCH V2 1/4] vgaarb: Add support for setting the default video device
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Date: Mon, 16 Apr 2012 16:26:02 -0400
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Message-Id: <1334607965-9582-1-git-send-email-mjg@redhat.com>
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The default VGA device is a somewhat fluid concept on platforms with
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multiple GPUs. Add support for setting it so switching code can update
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things appropriately, and make sure that the sysfs code returns the right
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device if it's changed.
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Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Cc: benh@kernel.crashing.org
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Cc: airlied@redhat.com
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---
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Updated to fix builds when __ARCH_HAS_VGA_DEFAULT_DEVICE is false.
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drivers/gpu/vga/vgaarb.c | 7 +++++++
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drivers/pci/pci-sysfs.c | 5 +++++
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include/linux/vgaarb.h | 2 ++
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3 files changed, 14 insertions(+)
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diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
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index 111d956..e223b96 100644
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--- a/drivers/gpu/vga/vgaarb.c
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+++ b/drivers/gpu/vga/vgaarb.c
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@@ -136,6 +136,11 @@ struct pci_dev *vga_default_device(void)
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{
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return vga_default;
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}
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+
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+void vga_set_default_device(struct pci_dev *pdev)
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+{
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+ vga_default = pdev;
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+}
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#endif
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static inline void vga_irq_set_state(struct vga_device *vgadev, bool state)
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@@ -605,10 +610,12 @@ static bool vga_arbiter_del_pci_device(struct pci_dev *pdev)
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goto bail;
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}
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+#ifndef __ARCH_HAS_VGA_DEFAULT_DEVICE
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if (vga_default == pdev) {
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pci_dev_put(vga_default);
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vga_default = NULL;
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}
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+#endif
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if (vgadev->decodes & (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM))
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vga_decode_count--;
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diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
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index a3cd8ca..7dd9f2b 100644
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--- a/drivers/pci/pci-sysfs.c
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+++ b/drivers/pci/pci-sysfs.c
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@@ -27,6 +27,7 @@
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#include <linux/security.h>
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#include <linux/pci-aspm.h>
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#include <linux/slab.h>
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+#include <linux/vgaarb.h>
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#include "pci.h"
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static int sysfs_initialized; /* = 0 */
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@@ -414,6 +415,10 @@ static ssize_t
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boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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+ struct pci_dev *vga_dev = vga_default_device();
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+
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+ if (vga_dev)
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+ return sprintf(buf, "%u\n", (pdev == vga_dev));
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return sprintf(buf, "%u\n",
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!!(pdev->resource[PCI_ROM_RESOURCE].flags &
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diff --git a/include/linux/vgaarb.h b/include/linux/vgaarb.h
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index 9c3120d..759a25b 100644
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--- a/include/linux/vgaarb.h
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+++ b/include/linux/vgaarb.h
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@@ -31,6 +31,7 @@
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#ifndef LINUX_VGA_H
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#define LINUX_VGA_H
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+#include <video/vga.h>
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/* Legacy VGA regions */
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#define VGA_RSRC_NONE 0x00
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@@ -181,6 +182,7 @@ extern void vga_put(struct pci_dev *pdev, unsigned int rsrc);
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#ifndef __ARCH_HAS_VGA_DEFAULT_DEVICE
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extern struct pci_dev *vga_default_device(void);
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+extern void vga_set_default_device(struct pci_dev *pdev);
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#endif
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/**
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--
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1.7.10
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--
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From: Matthew Garrett <mjg@redhat.com>
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To: linux-kernel@vger.kernel.org
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Cc: Matthew Garrett <mjg@redhat.com>, airlied@redhat.com
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Subject: [PATCH V2 2/4] vga-switcheroo: Use vga_default_device()
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Date: Mon, 16 Apr 2012 16:26:03 -0400
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vga-switcheroo currently changes the default VGA device by fiddling with
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the IORESOURCE_ROM_SHADOW flag on the device. This isn't strictly accurate,
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since there's no guarantee that switching also changes the ROM decoding.
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Switch over to using the vgaarb functions for this.
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Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Cc: airlied@redhat.com
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---
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drivers/gpu/vga/vga_switcheroo.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
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index 9a2c805..44c664e 100644
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--- a/drivers/gpu/vga/vga_switcheroo.c
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+++ b/drivers/gpu/vga/vga_switcheroo.c
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@@ -28,6 +28,8 @@
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#include <linux/pci.h>
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#include <linux/vga_switcheroo.h>
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+#include <linux/vgaarb.h>
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+
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struct vga_switcheroo_client {
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struct pci_dev *pdev;
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struct fb_info *fb_info;
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@@ -140,7 +142,7 @@ int vga_switcheroo_register_client(struct pci_dev *pdev,
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vgasr_priv.clients[index].reprobe = reprobe;
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vgasr_priv.clients[index].can_switch = can_switch;
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vgasr_priv.clients[index].id = -1;
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- if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
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+ if (pdev == vga_default_device())
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vgasr_priv.clients[index].active = true;
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vgasr_priv.registered_clients |= (1 << index);
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@@ -248,9 +250,8 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
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if (new_client->pwr_state == VGA_SWITCHEROO_OFF)
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vga_switchon(new_client);
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- /* swap shadow resource to denote boot VGA device has changed so X starts on new device */
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- active->pdev->resource[PCI_ROM_RESOURCE].flags &= ~IORESOURCE_ROM_SHADOW;
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- new_client->pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
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+ vga_set_default_device(new_client->pdev);
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+
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return 0;
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}
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--
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1.7.10
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From: Matthew Garrett <mjg@redhat.com>
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To: linux-kernel@vger.kernel.org
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Cc: Matthew Garrett <mjg@redhat.com>, mingo@redhat.com, hpa@zytor.com
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Subject: [PATCH V2 3/4] x86: Use vga_default_device() when determining whether an fb is primary
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Date: Mon, 16 Apr 2012 16:26:04 -0400
|
||||
Message-Id: <1334607965-9582-3-git-send-email-mjg@redhat.com>
|
||||
In-Reply-To: <1334607965-9582-1-git-send-email-mjg@redhat.com>
|
||||
References: <1334607965-9582-1-git-send-email-mjg@redhat.com>
|
||||
X-SA-Do-Not-Run: Yes
|
||||
X-SA-Exim-Connect-IP: 66.187.233.202
|
||||
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|
||||
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|
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|
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|
||||
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|
||||
|
||||
IORESOURCE_ROM_SHADOW is not necessarily an indication that the hardware
|
||||
is the primary device. Add support for using the vgaarb functions and
|
||||
fall back if nothing's set them.
|
||||
|
||||
Signed-off-by: Matthew Garrett <mjg@redhat.com>
|
||||
Cc: mingo@redhat.com
|
||||
Cc: hpa@zytor.com
|
||||
---
|
||||
arch/x86/video/fbdev.c | 20 +++++++++++++++-----
|
||||
1 file changed, 15 insertions(+), 5 deletions(-)
|
||||
|
||||
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
|
||||
index c5ffb6a..d5644bb 100644
|
||||
--- a/arch/x86/video/fbdev.c
|
||||
+++ b/arch/x86/video/fbdev.c
|
||||
@@ -9,24 +9,34 @@
|
||||
#include <linux/fb.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/module.h>
|
||||
+#include <linux/vgaarb.h>
|
||||
|
||||
int fb_is_primary_device(struct fb_info *info)
|
||||
{
|
||||
struct device *device = info->device;
|
||||
struct pci_dev *pci_dev = NULL;
|
||||
+ struct pci_dev *default_device = vga_default_device();
|
||||
struct resource *res = NULL;
|
||||
- int retval = 0;
|
||||
|
||||
if (device)
|
||||
pci_dev = to_pci_dev(device);
|
||||
|
||||
- if (pci_dev)
|
||||
- res = &pci_dev->resource[PCI_ROM_RESOURCE];
|
||||
+ if (!pci_dev)
|
||||
+ return 0;
|
||||
+
|
||||
+ if (default_device) {
|
||||
+ if (pci_dev == default_device)
|
||||
+ return 1;
|
||||
+ else
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+ res = &pci_dev->resource[PCI_ROM_RESOURCE];
|
||||
|
||||
if (res && res->flags & IORESOURCE_ROM_SHADOW)
|
||||
- retval = 1;
|
||||
+ return 1;
|
||||
|
||||
- return retval;
|
||||
+ return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(fb_is_primary_device);
|
||||
MODULE_LICENSE("GPL");
|
||||
--
|
||||
1.7.10
|
||||
|
||||
--
|
||||
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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|
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|
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|
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|
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|
||||
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
id 1SJsVE-0003T4-Uv; Mon, 16 Apr 2012 21:26:25 +0100
|
||||
From: Matthew Garrett <mjg@redhat.com>
|
||||
To: linux-kernel@vger.kernel.org
|
||||
Cc: Matthew Garrett <mjg@redhat.com>, hpa@zytor.com,
|
||||
matt.fleming@intel.com
|
||||
Subject: [PATCH V2 4/4] efifb: Implement vga_default_device()
|
||||
Date: Mon, 16 Apr 2012 16:26:05 -0400
|
||||
Message-Id: <1334607965-9582-4-git-send-email-mjg@redhat.com>
|
||||
In-Reply-To: <1334607965-9582-1-git-send-email-mjg@redhat.com>
|
||||
References: <1334607965-9582-1-git-send-email-mjg@redhat.com>
|
||||
X-SA-Do-Not-Run: Yes
|
||||
X-SA-Exim-Connect-IP: 66.187.233.202
|
||||
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|
||||
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|
||||
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25
|
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|
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|
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|
||||
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|
||||
|
||||
EFI doesn't typically make use of the legacy VGA ROM, but it may still be
|
||||
configured to pass that through to a given video device. This may lead to
|
||||
an inaccurate choice of default video device. Add support to efifb to pick
|
||||
out the correct active video device.
|
||||
|
||||
Signed-off-by: Matthew Garrett <mjg@redhat.com>
|
||||
Cc: hpa@zytor.com
|
||||
Cc: matt.fleming@intel.com
|
||||
---
|
||||
arch/x86/include/asm/vga.h | 6 ++++
|
||||
drivers/video/efifb.c | 77 ++++++++++++++++++++++++++++++++------------
|
||||
2 files changed, 63 insertions(+), 20 deletions(-)
|
||||
|
||||
diff --git a/arch/x86/include/asm/vga.h b/arch/x86/include/asm/vga.h
|
||||
index c4b9dc2..2723c07 100644
|
||||
--- a/arch/x86/include/asm/vga.h
|
||||
+++ b/arch/x86/include/asm/vga.h
|
||||
@@ -17,4 +17,10 @@
|
||||
#define vga_readb(x) (*(x))
|
||||
#define vga_writeb(x, y) (*(y) = (x))
|
||||
|
||||
+#if CONFIG_FB_EFI
|
||||
+#define __ARCH_HAS_VGA_DEFAULT_DEVICE
|
||||
+extern struct pci_dev *vga_default_device(void);
|
||||
+extern void vga_set_default_device(struct pci_dev *pdev);
|
||||
+#endif
|
||||
+
|
||||
#endif /* _ASM_X86_VGA_H */
|
||||
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
|
||||
index 784139a..66ed991 100644
|
||||
--- a/drivers/video/efifb.c
|
||||
+++ b/drivers/video/efifb.c
|
||||
@@ -18,6 +18,8 @@
|
||||
|
||||
static bool request_mem_succeeded = false;
|
||||
|
||||
+static struct pci_dev *default_vga;
|
||||
+
|
||||
static struct fb_var_screeninfo efifb_defined __devinitdata = {
|
||||
.activate = FB_ACTIVATE_NOW,
|
||||
.height = -1,
|
||||
@@ -298,35 +300,70 @@ static struct fb_ops efifb_ops = {
|
||||
.fb_imageblit = cfb_imageblit,
|
||||
};
|
||||
|
||||
+struct pci_dev *vga_default_device(void)
|
||||
+{
|
||||
+ return default_vga;
|
||||
+}
|
||||
+
|
||||
+void vga_set_default_device(struct pci_dev *pdev)
|
||||
+{
|
||||
+ default_vga = pdev;
|
||||
+}
|
||||
+
|
||||
static int __init efifb_setup(char *options)
|
||||
{
|
||||
char *this_opt;
|
||||
int i;
|
||||
+ struct pci_dev *dev = NULL;
|
||||
+
|
||||
+ if (options && *options) {
|
||||
+ while ((this_opt = strsep(&options, ",")) != NULL) {
|
||||
+ if (!*this_opt) continue;
|
||||
+
|
||||
+ for (i = 0; i < M_UNKNOWN; i++) {
|
||||
+ if (!strcmp(this_opt, dmi_list[i].optname) &&
|
||||
+ dmi_list[i].base != 0) {
|
||||
+ screen_info.lfb_base = dmi_list[i].base;
|
||||
+ screen_info.lfb_linelength = dmi_list[i].stride;
|
||||
+ screen_info.lfb_width = dmi_list[i].width;
|
||||
+ screen_info.lfb_height = dmi_list[i].height;
|
||||
+ }
|
||||
+ }
|
||||
+ if (!strncmp(this_opt, "base:", 5))
|
||||
+ screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
|
||||
+ else if (!strncmp(this_opt, "stride:", 7))
|
||||
+ screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
|
||||
+ else if (!strncmp(this_opt, "height:", 7))
|
||||
+ screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
|
||||
+ else if (!strncmp(this_opt, "width:", 6))
|
||||
+ screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
|
||||
+ }
|
||||
+ }
|
||||
|
||||
- if (!options || !*options)
|
||||
- return 0;
|
||||
+ for_each_pci_dev(dev) {
|
||||
+ int i;
|
||||
|
||||
- while ((this_opt = strsep(&options, ",")) != NULL) {
|
||||
- if (!*this_opt) continue;
|
||||
+ if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
|
||||
+ continue;
|
||||
|
||||
- for (i = 0; i < M_UNKNOWN; i++) {
|
||||
- if (!strcmp(this_opt, dmi_list[i].optname) &&
|
||||
- dmi_list[i].base != 0) {
|
||||
- screen_info.lfb_base = dmi_list[i].base;
|
||||
- screen_info.lfb_linelength = dmi_list[i].stride;
|
||||
- screen_info.lfb_width = dmi_list[i].width;
|
||||
- screen_info.lfb_height = dmi_list[i].height;
|
||||
- }
|
||||
+ for (i=0; i < DEVICE_COUNT_RESOURCE; i++) {
|
||||
+ resource_size_t start, end;
|
||||
+
|
||||
+ if (!(pci_resource_flags(dev, i) & IORESOURCE_MEM))
|
||||
+ continue;
|
||||
+
|
||||
+ start = pci_resource_start(dev, i);
|
||||
+ end = pci_resource_end(dev, i);
|
||||
+
|
||||
+ if (!start || !end)
|
||||
+ continue;
|
||||
+
|
||||
+ if (screen_info.lfb_base >= start &&
|
||||
+ (screen_info.lfb_base + screen_info.lfb_size) < end)
|
||||
+ default_vga = dev;
|
||||
}
|
||||
- if (!strncmp(this_opt, "base:", 5))
|
||||
- screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
|
||||
- else if (!strncmp(this_opt, "stride:", 7))
|
||||
- screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
|
||||
- else if (!strncmp(this_opt, "height:", 7))
|
||||
- screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
|
||||
- else if (!strncmp(this_opt, "width:", 6))
|
||||
- screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
|
||||
}
|
||||
+
|
||||
return 0;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.10
|
||||
|
||||
--
|
||||
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
|
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the body of a message to majordomo@vger.kernel.org
|
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|
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Please read the FAQ at http://www.tux.org/lkml/
|
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Reference in New Issue
Block a user