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Date: Mon, 23 Oct 2006 15:14:07 +0900
From: <eiichiro.oiwa.nm@...achi.com>
To: "David Miller" <davem@...emloft.net>
Cc: <greg@...ah.com>, <alan@...hat.com>, <jesse.barnes@...el.com>,
<linux-kernel@...r.kernel.org>, <steven.c.cook@...el.com>,
<bjorn.helgaas@...com>, <tony.luck@...el.com>
Subject: Re: pci_fixup_video change blows up on sparc64
From: David Miller <davem@...emloft.net>
>From: <eiichiro.oiwa.nm@...achi.com>
>Date: Fri, 20 Oct 2006 23:20:21 +0900
>
>> + /*
>> + * From information provided by
>> + * "David Miller" <davem@...emloft.net>
>> + * The bridge control register is valid for PCI header
>> + * type BRIDGE, or CARDBUS. Host to PCI controllers use
>> + * PCI header type NORMAL.
>> + */
>> + pci_read_config_byte(bridge, PCI_HEADER_TYPE,
>> + &config_header);
>
>Use the software copy in "bridge->hdr_type", it's already been read
>for you by the PCI device probing layer.
Ok, I fixed, and tested on x86, x86_64 and IA64 dig.
Thank you.
From: David Miller <davem@...emloft.net>
Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@...achi.com>
---
diff -dupNr linux-2.6.19-rc2-git3.orig/arch/i386/pci/fixup.c linux-2.6.19-rc2-git3/arch/i386/pci/fixup.c
--- linux-2.6.19-rc2-git3.orig/arch/i386/pci/fixup.c 2006-10-20 13:48:45.000000000 +0900
+++ linux-2.6.19-rc2-git3/arch/i386/pci/fixup.c 2006-10-20 15:46:06.000000000 +0900
@@ -343,6 +343,61 @@ 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@...il.com>
+ *
+ * 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@...emloft.net>
+ * 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
diff -dupNr linux-2.6.19-rc2-git3.orig/arch/ia64/pci/fixup.c linux-2.6.19-rc2-git3/arch/ia64/pci/fixup.c
--- linux-2.6.19-rc2-git3.orig/arch/ia64/pci/fixup.c 1970-01-01 09:00:00.000000000 +0900
+++ linux-2.6.19-rc2-git3/arch/ia64/pci/fixup.c 2006-10-20 15:46:35.000000000 +0900
@@ -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@...il.com>
+ *
+ * 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@...emloft.net>
+ * 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);
diff -dupNr linux-2.6.19-rc2-git3.orig/arch/ia64/pci/Makefile linux-2.6.19-rc2-git3/arch/ia64/pci/Makefile
--- linux-2.6.19-rc2-git3.orig/arch/ia64/pci/Makefile 2006-10-14 01:25:04.000000000 +0900
+++ linux-2.6.19-rc2-git3/arch/ia64/pci/Makefile 2006-10-20 14:47:13.000000000 +0900
@@ -1,4 +1,4 @@
#
# Makefile for the ia64-specific parts of the pci bus
#
-obj-y := pci.o
+obj-y := pci.o fixup.o
diff -dupNr linux-2.6.19-rc2-git3.orig/drivers/pci/quirks.c linux-2.6.19-rc2-git3/drivers/pci/quirks.c
--- linux-2.6.19-rc2-git3.orig/drivers/pci/quirks.c 2006-10-20 13:48:46.000000000 +0900
+++ linux-2.6.19-rc2-git3/drivers/pci/quirks.c 2006-10-20 14:42:57.000000000 +0900
@@ -1619,52 +1619,6 @@ 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@...il.com>
- *
- * 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) {
diff -dupNr linux-2.6.19-rc2-git3.orig/drivers/pci/rom.c linux-2.6.19-rc2-git3/drivers/pci/rom.c
--- linux-2.6.19-rc2-git3.orig/drivers/pci/rom.c 2006-10-20 13:48:46.000000000 +0900
+++ linux-2.6.19-rc2-git3/drivers/pci/rom.c 2006-10-20 15:45:12.000000000 +0900
@@ -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 */
-
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