mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 02:46:49 +07:00
1ab40ec8f2
Convert quirk printks to dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
|
|
* 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@gmail.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@davemloft.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;
|
|
dev_printk(KERN_DEBUG, &pdev->dev, "Boot video device\n");
|
|
}
|
|
}
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
|