patch pci-fix-pci_fixup_video-as-it-blows-up-on-sparc64.patch added to gregkh-2.6 tree
- From: <gregkh@xxxxxxx>
- Date: Fri, 27 Oct 2006 11:05:14 -0700
This is a note to let you know that I've just added the patch titled
Subject: PCI: fix pci_fixup_video as it blows up on sparc64
to my gregkh-2.6 tree. Its filename is
pci-fix-pci_fixup_video-as-it-blows-up-on-sparc64.patch
This tree can be found at
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/
From eiichiro.oiwa.nm@xxxxxxxxxxx Fri Oct 27 10:23:02 2006MIME-Version: 1.0
Message-ID: <XNM1$9$0$4$$3$3$7$A$9002718U453c5dab@xxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
To: "David Miller" <davem@xxxxxxxxxxxxx>
From: <eiichiro.oiwa.nm@xxxxxxxxxxx>
Cc: <greg@xxxxxxxxx>, <alan@xxxxxxxxxx>, <jesse.barnes@xxxxxxxxx>,
<linux-kernel@xxxxxxxxxxxxxxx>, <steven.c.cook@xxxxxxxxx>,
<bjorn.helgaas@xxxxxx>, <tony.luck@xxxxxxxxx>
Date: Mon, 23 Oct 2006 15:14:07 +0900
Subject: PCI: fix pci_fixup_video as it blows up on sparc64
From: Eiichiro Oiwa <eiichiro.oiwa.nm@xxxxxxxxxxx>
This reverts much of the original pci_fixup_video change and makes it
work for all arches that need it.
fixed, and tested on x86, x86_64 and IA64 dig.
Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@xxxxxxxxxxx>
Acked-by: David Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
arch/i386/pci/fixup.c | 55 +++++++++++++++++++++++++++++++++++++++
arch/ia64/pci/Makefile | 2 -
arch/ia64/pci/fixup.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++
drivers/pci/quirks.c | 46 --------------------------------
drivers/pci/rom.c | 5 ++-
5 files changed, 128 insertions(+), 49 deletions(-)
--- gregkh-2.6.orig/arch/i386/pci/fixup.c
+++ gregkh-2.6/arch/i386/pci/fixup.c
@@ -297,6 +297,61 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IN
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PC1, pcie_rootport_aspm_quirk );
/*
+ * Fixup to mark boot BIOS video selected by BIOS before it changes
+ *
+ * From information provided by "Jon Smirl" <jonsmirl@xxxxxxxxx>
+ *
+ * The standard boot ROM sequence for an x86 machine uses the BIOS
+ * to select an initial video card for boot display. This boot video
+ * card will have it's BIOS copied to C0000 in system RAM.
+ * IORESOURCE_ROM_SHADOW is used to associate the boot video
+ * card with this copy. On laptops this copy has to be used since
+ * the main ROM may be compressed or combined with another image.
+ * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW
+ * is marked here since the boot video device will be the only enabled
+ * video device at this point.
+ */
+
+static void __devinit pci_fixup_video(struct pci_dev *pdev)
+{
+ struct pci_dev *bridge;
+ struct pci_bus *bus;
+ u16 config;
+
+ if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
+ return;
+
+ /* Is VGA routed to us? */
+ bus = pdev->bus;
+ while (bus) {
+ bridge = bus->self;
+
+ /*
+ * From information provided by
+ * "David Miller" <davem@xxxxxxxxxxxxx>
+ * The bridge control register is valid for PCI header
+ * type BRIDGE, or CARDBUS. Host to PCI controllers use
+ * PCI header type NORMAL.
+ */
+ if (bridge
+ &&((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)
+ ||(bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {
+ pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
+ &config);
+ if (!(config & PCI_BRIDGE_CTL_VGA))
+ return;
+ }
+ bus = bus->parent;
+ }
+ pci_read_config_word(pdev, PCI_COMMAND, &config);
+ if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
+ pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
+ printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
+
+/*
* Some Toshiba laptops need extra code to enable their TI TSB43AB22/A.
*
* We pretend to bring them out of full D3 state, and restore the proper
--- gregkh-2.6.orig/arch/ia64/pci/Makefile
+++ gregkh-2.6/arch/ia64/pci/Makefile
@@ -1,4 +1,4 @@
#
# Makefile for the ia64-specific parts of the pci bus
#
-obj-y := pci.o
+obj-y := pci.o fixup.o
--- /dev/null
+++ gregkh-2.6/arch/ia64/pci/fixup.c
@@ -0,0 +1,69 @@
+/*
+ * Exceptions for specific devices. Usually work-arounds for fatal design flaws.
+ * Derived from fixup.c of i386 tree.
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/machvec.h>
+
+/*
+ * Fixup to mark boot BIOS video selected by BIOS before it changes
+ *
+ * From information provided by "Jon Smirl" <jonsmirl@xxxxxxxxx>
+ *
+ * The standard boot ROM sequence for an x86 machine uses the BIOS
+ * to select an initial video card for boot display. This boot video
+ * card will have it's BIOS copied to C0000 in system RAM.
+ * IORESOURCE_ROM_SHADOW is used to associate the boot video
+ * card with this copy. On laptops this copy has to be used since
+ * the main ROM may be compressed or combined with another image.
+ * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW
+ * is marked here since the boot video device will be the only enabled
+ * video device at this point.
+ */
+
+static void __devinit pci_fixup_video(struct pci_dev *pdev)
+{
+ struct pci_dev *bridge;
+ struct pci_bus *bus;
+ u16 config;
+
+ if ((strcmp(platform_name, "dig") != 0)
+ && (strcmp(platform_name, "hpzx1") != 0))
+ return;
+ /* Maybe, this machine supports legacy memory map. */
+
+ if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
+ return;
+
+ /* Is VGA routed to us? */
+ bus = pdev->bus;
+ while (bus) {
+ bridge = bus->self;
+
+ /*
+ * From information provided by
+ * "David Miller" <davem@xxxxxxxxxxxxx>
+ * The bridge control register is valid for PCI header
+ * type BRIDGE, or CARDBUS. Host to PCI controllers use
+ * PCI header type NORMAL.
+ */
+ if (bridge
+ &&((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)
+ ||(bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {
+ pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
+ &config);
+ if (!(config & PCI_BRIDGE_CTL_VGA))
+ return;
+ }
+ bus = bus->parent;
+ }
+ pci_read_config_word(pdev, PCI_COMMAND, &config);
+ if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
+ pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
+ printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
--- gregkh-2.6.orig/drivers/pci/quirks.c
+++ gregkh-2.6/drivers/pci/quirks.c
@@ -1566,52 +1566,6 @@ static void __devinit fixup_rev1_53c810(
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
-/*
- * Fixup to mark boot BIOS video selected by BIOS before it changes
- *
- * From information provided by "Jon Smirl" <jonsmirl@xxxxxxxxx>
- *
- * The standard boot ROM sequence for an x86 machine uses the BIOS
- * to select an initial video card for boot display. This boot video
- * card will have it's BIOS copied to C0000 in system RAM.
- * IORESOURCE_ROM_SHADOW is used to associate the boot video
- * card with this copy. On laptops this copy has to be used since
- * the main ROM may be compressed or combined with another image.
- * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW
- * is marked here since the boot video device will be the only enabled
- * video device at this point.
- */
-
-static void __devinit fixup_video(struct pci_dev *pdev)
-{
- struct pci_dev *bridge;
- struct pci_bus *bus;
- u16 config;
-
- if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
- return;
-
- /* Is VGA routed to us? */
- bus = pdev->bus;
- while (bus) {
- bridge = bus->self;
- if (bridge) {
- pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
- &config);
- if (!(config & PCI_BRIDGE_CTL_VGA))
- return;
- }
- bus = bus->parent;
- }
- pci_read_config_word(pdev, PCI_COMMAND, &config);
- if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
- pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
- printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, fixup_video);
-
-
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
{
while (f < end) {
--- gregkh-2.6.orig/drivers/pci/rom.c
+++ gregkh-2.6/drivers/pci/rom.c
@@ -72,8 +72,9 @@ void __iomem *pci_map_rom(struct pci_dev
int last_image;
/*
- * IORESOURCE_ROM_SHADOW set if the VGA enable bit of the Bridge Control
- * register is set for embedded VGA.
+ * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy
+ * memory map if the VGA enable bit of the Bridge Control register is
+ * set for embedded VGA.
*/
if (res->flags & IORESOURCE_ROM_SHADOW) {
/* primary video rom always starts here */
Patches currently in gregkh-2.6 which might be from davem@xxxxxxxxxxxxx are
pci/pci-fix-pci_fixup_video-as-it-blows-up-on-sparc64.patch
pci/pci-use-pci_generic_prep_mwi-on-sparc64.patch
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- References:
- Re: pci_fixup_video change blows up on sparc64
- From: eiichiro.oiwa.nm
- Re: pci_fixup_video change blows up on sparc64
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