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linux/drivers/pci/quirks.c
Narendra Sankar 1e06276704 [PATCH] PCI: MSI functionality broken on Serverworks GC chipset 
MSI functionality is broken on the GC_LE x86 chipset that Serverworks
developed and that is being used in various platforms today. Broadcom is
going to push out to the kernel MSI enabled Gigabit drivers (in the very
near future), and we would like to make sure that MSI does not get
enabled on any platforms using the GC_LE chipset (device id 0x17).
Following the AMD 8131 example, I am including a patch to disable MSI
functionality when a GCNB_LE is detected. Please let me know if there
are any issues with this. This is a permanent fix for this chipset, as
the hardware will not be updated.

Signed-off-by: Narendra Sankar <nsankar@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-09 14:52:30 -07:00

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/*
* This file contains work-arounds for many known PCI hardware
* bugs. Devices present only on certain architectures (host
* bridges et cetera) should be handled in arch-specific code.
*
* Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
*
* Copyright (c) 1999 Martin Mares <mj@ucw.cz>
*
* The bridge optimization stuff has been removed. If you really
* have a silly BIOS which is unable to set your host bridge right,
* use the PowerTweak utility (see http://powertweak.sourceforge.net).
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/acpi.h>
#include "pci.h"
/* Deal with broken BIOS'es that neglect to enable passive release,
which can cause problems in combination with the 82441FX/PPro MTRRs */
static void __devinit quirk_passive_release(struct pci_dev *dev)
{
struct pci_dev *d = NULL;
unsigned char dlc;
/* We have to make sure a particular bit is set in the PIIX3
ISA bridge, so we have to go out and find it. */
while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
pci_read_config_byte(d, 0x82, &dlc);
if (!(dlc & 1<<1)) {
printk(KERN_ERR "PCI: PIIX3: Enabling Passive Release on %s\n", pci_name(d));
dlc |= 1<<1;
pci_write_config_byte(d, 0x82, dlc);
}
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release );
/* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
but VIA don't answer queries. If you happen to have good contacts at VIA
ask them for me please -- Alan
This appears to be BIOS not version dependent. So presumably there is a
chipset level fix */
int isa_dma_bridge_buggy; /* Exported */
static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
{
if (!isa_dma_bridge_buggy) {
isa_dma_bridge_buggy=1;
printk(KERN_INFO "Activating ISA DMA hang workarounds.\n");
}
}
/*
* Its not totally clear which chipsets are the problematic ones
* We know 82C586 and 82C596 variants are affected.
*/
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs );
int pci_pci_problems;
/*
* Chipsets where PCI->PCI transfers vanish or hang
*/
static void __devinit quirk_nopcipci(struct pci_dev *dev)
{
if ((pci_pci_problems & PCIPCI_FAIL)==0) {
printk(KERN_INFO "Disabling direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_FAIL;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci );
/*
* Triton requires workarounds to be used by the drivers
*/
static void __devinit quirk_triton(struct pci_dev *dev)
{
if ((pci_pci_problems&PCIPCI_TRITON)==0) {
printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_TRITON;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton );
/*
* VIA Apollo KT133 needs PCI latency patch
* Made according to a windows driver based patch by George E. Breese
* see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
* Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
* the info on which Mr Breese based his work.
*
* Updated based on further information from the site and also on
* information provided by VIA
*/
static void __devinit quirk_vialatency(struct pci_dev *dev)
{
struct pci_dev *p;
u8 rev;
u8 busarb;
/* Ok we have a potential problem chipset here. Now see if we have
a buggy southbridge */
p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
if (p!=NULL) {
pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
/* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
/* Check for buggy part revisions */
if (rev < 0x40 || rev > 0x42)
goto exit;
} else {
p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
if (p==NULL) /* No problem parts */
goto exit;
pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
/* Check for buggy part revisions */
if (rev < 0x10 || rev > 0x12)
goto exit;
}
/*
* Ok we have the problem. Now set the PCI master grant to
* occur every master grant. The apparent bug is that under high
* PCI load (quite common in Linux of course) you can get data
* loss when the CPU is held off the bus for 3 bus master requests
* This happens to include the IDE controllers....
*
* VIA only apply this fix when an SB Live! is present but under
* both Linux and Windows this isnt enough, and we have seen
* corruption without SB Live! but with things like 3 UDMA IDE
* controllers. So we ignore that bit of the VIA recommendation..
*/
pci_read_config_byte(dev, 0x76, &busarb);
/* Set bit 4 and bi 5 of byte 76 to 0x01
"Master priority rotation on every PCI master grant */
busarb &= ~(1<<5);
busarb |= (1<<4);
pci_write_config_byte(dev, 0x76, busarb);
printk(KERN_INFO "Applying VIA southbridge workaround.\n");
exit:
pci_dev_put(p);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency );
/*
* VIA Apollo VP3 needs ETBF on BT848/878
*/
static void __devinit quirk_viaetbf(struct pci_dev *dev)
{
if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_VIAETBF;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf );
static void __devinit quirk_vsfx(struct pci_dev *dev)
{
if ((pci_pci_problems&PCIPCI_VSFX)==0) {
printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_VSFX;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx );
/*
* Ali Magik requires workarounds to be used by the drivers
* that DMA to AGP space. Latency must be set to 0xA and triton
* workaround applied too
* [Info kindly provided by ALi]
*/
static void __init quirk_alimagik(struct pci_dev *dev)
{
if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik );
/*
* Natoma has some interesting boundary conditions with Zoran stuff
* at least
*/
static void __devinit quirk_natoma(struct pci_dev *dev)
{
if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
pci_pci_problems |= PCIPCI_NATOMA;
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma );
/*
* This chip can cause PCI parity errors if config register 0xA0 is read
* while DMAs are occurring.
*/
static void __devinit quirk_citrine(struct pci_dev *dev)
{
dev->cfg_size = 0xA0;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine );
/*
* S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
* If it's needed, re-allocate the region.
*/
static void __devinit quirk_s3_64M(struct pci_dev *dev)
{
struct resource *r = &dev->resource[0];
if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
r->start = 0;
r->end = 0x3ffffff;
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M );
static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region, unsigned size, int nr)
{
region &= ~(size-1);
if (region) {
struct resource *res = dev->resource + nr;
res->name = pci_name(dev);
res->start = region;
res->end = region + size - 1;
res->flags = IORESOURCE_IO;
pci_claim_resource(dev, nr);
}
}
/*
* ATI Northbridge setups MCE the processor if you even
* read somewhere between 0x3b0->0x3bb or read 0x3d3
*/
static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
{
printk(KERN_INFO "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb.\n");
/* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
request_region(0x3b0, 0x0C, "RadeonIGP");
request_region(0x3d3, 0x01, "RadeonIGP");
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce );
/*
* Let's make the southbridge information explicit instead
* of having to worry about people probing the ACPI areas,
* for example.. (Yes, it happens, and if you read the wrong
* ACPI register it will put the machine to sleep with no
* way of waking it up again. Bummer).
*
* ALI M7101: Two IO regions pointed to by words at
* 0xE0 (64 bytes of ACPI registers)
* 0xE2 (32 bytes of SMB registers)
*/
static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
{
u16 region;
pci_read_config_word(dev, 0xE0, &region);
quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES);
pci_read_config_word(dev, 0xE2, &region);
quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi );
/*
* PIIX4 ACPI: Two IO regions pointed to by longwords at
* 0x40 (64 bytes of ACPI registers)
* 0x90 (32 bytes of SMB registers)
*/
static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
{
u32 region;
pci_read_config_dword(dev, 0x40, &region);
quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES);
pci_read_config_dword(dev, 0x90, &region);
quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi );
/*
* ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
* 0x40 (128 bytes of ACPI, GPIO & TCO registers)
* 0x58 (64 bytes of GPIO I/O space)
*/
static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
{
u32 region;
pci_read_config_dword(dev, 0x40, &region);
quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES);
pci_read_config_dword(dev, 0x58, &region);
quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi );
/*
* VIA ACPI: One IO region pointed to by longword at
* 0x48 or 0x20 (256 bytes of ACPI registers)
*/
static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
{
u8 rev;
u32 region;
pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
if (rev & 0x10) {
pci_read_config_dword(dev, 0x48, &region);
region &= PCI_BASE_ADDRESS_IO_MASK;
quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi );
/*
* VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
* 0x48 (256 bytes of ACPI registers)
* 0x70 (128 bytes of hardware monitoring register)
* 0x90 (16 bytes of SMB registers)
*/
static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
{
u16 hm;
u32 smb;
quirk_vt82c586_acpi(dev);
pci_read_config_word(dev, 0x70, &hm);
hm &= PCI_BASE_ADDRESS_IO_MASK;
quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1);
pci_read_config_dword(dev, 0x90, &smb);
smb &= PCI_BASE_ADDRESS_IO_MASK;
quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi );
#ifdef CONFIG_X86_IO_APIC
#include <asm/io_apic.h>
/*
* VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
* devices to the external APIC.
*
* TODO: When we have device-specific interrupt routers,
* this code will go away from quirks.
*/
static void __devinit quirk_via_ioapic(struct pci_dev *dev)
{
u8 tmp;
if (nr_ioapics < 1)
tmp = 0; /* nothing routed to external APIC */
else
tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
printk(KERN_INFO "PCI: %sbling Via external APIC routing\n",
tmp == 0 ? "Disa" : "Ena");
/* Offset 0x58: External APIC IRQ output control */
pci_write_config_byte (dev, 0x58, tmp);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic );
/*
* The AMD io apic can hang the box when an apic irq is masked.
* We check all revs >= B0 (yet not in the pre production!) as the bug
* is currently marked NoFix
*
* We have multiple reports of hangs with this chipset that went away with
* noapic specified. For the moment we assume its the errata. We may be wrong
* of course. However the advice is demonstrably good even if so..
*/
static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
{
u8 rev;
pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
if (rev >= 0x02) {
printk(KERN_WARNING "I/O APIC: AMD Errata #22 may be present. In the event of instability try\n");
printk(KERN_WARNING " : booting with the \"noapic\" option.\n");
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic );
static void __init quirk_ioapic_rmw(struct pci_dev *dev)
{
if (dev->devfn == 0 && dev->bus->number == 0)
sis_apic_bug = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw );
int pci_msi_quirk;
#define AMD8131_revA0 0x01
#define AMD8131_revB0 0x11
#define AMD8131_MISC 0x40
#define AMD8131_NIOAMODE_BIT 0
static void __init quirk_amd_8131_ioapic(struct pci_dev *dev)
{
unsigned char revid, tmp;
pci_msi_quirk = 1;
printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
if (nr_ioapics == 0)
return;
pci_read_config_byte(dev, PCI_REVISION_ID, &revid);
if (revid == AMD8131_revA0 || revid == AMD8131_revB0) {
printk(KERN_INFO "Fixing up AMD8131 IOAPIC mode\n");
pci_read_config_byte( dev, AMD8131_MISC, &tmp);
tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
pci_write_config_byte( dev, AMD8131_MISC, tmp);
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_APIC, quirk_amd_8131_ioapic );
static void __init quirk_svw_msi(struct pci_dev *dev)
{
pci_msi_quirk = 1;
printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_svw_msi );
#endif /* CONFIG_X86_IO_APIC */
/*
* FIXME: it is questionable that quirk_via_acpi
* is needed. It shows up as an ISA bridge, and does not
* support the PCI_INTERRUPT_LINE register at all. Therefore
* it seems like setting the pci_dev's 'irq' to the
* value of the ACPI SCI interrupt is only done for convenience.
* -jgarzik
*/
static void __devinit quirk_via_acpi(struct pci_dev *d)
{
/*
* VIA ACPI device: SCI IRQ line in PCI config byte 0x42
*/
u8 irq;
pci_read_config_byte(d, 0x42, &irq);
irq &= 0xf;
if (irq && (irq != 2))
d->irq = irq;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi );
/*
* Via 686A/B: The PCI_INTERRUPT_LINE register for the on-chip
* devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
* when written, it makes an internal connection to the PIC.
* For these devices, this register is defined to be 4 bits wide.
* Normally this is fine. However for IO-APIC motherboards, or
* non-x86 architectures (yes Via exists on PPC among other places),
* we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
* interrupts delivered properly.
*/
static void quirk_via_irq(struct pci_dev *dev)
{
u8 irq, new_irq;
new_irq = dev->irq & 0xf;
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
if (new_irq != irq) {
printk(KERN_INFO "PCI: Via IRQ fixup for %s, from %d to %d\n",
pci_name(dev), irq, new_irq);
udelay(15); /* unknown if delay really needed */
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
}
}
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
/*
* PIIX3 USB: We have to disable USB interrupts that are
* hardwired to PIRQD# and may be shared with an
* external device.
*
* Legacy Support Register (LEGSUP):
* bit13: USB PIRQ Enable (USBPIRQDEN),
* bit4: Trap/SMI On IRQ Enable (USBSMIEN).
*
* We mask out all r/wc bits, too.
*/
static void __devinit quirk_piix3_usb(struct pci_dev *dev)
{
u16 legsup;
pci_read_config_word(dev, 0xc0, &legsup);
legsup &= 0x50ef;
pci_write_config_word(dev, 0xc0, legsup);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_2, quirk_piix3_usb );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_2, quirk_piix3_usb );
/*
* VIA VT82C598 has its device ID settable and many BIOSes
* set it to the ID of VT82C597 for backward compatibility.
* We need to switch it off to be able to recognize the real
* type of the chip.
*/
static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
{
pci_write_config_byte(dev, 0xfc, 0);
pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id );
/*
* CardBus controllers have a legacy base address that enables them
* to respond as i82365 pcmcia controllers. We don't want them to
* do this even if the Linux CardBus driver is not loaded, because
* the Linux i82365 driver does not (and should not) handle CardBus.
*/
static void __devinit quirk_cardbus_legacy(struct pci_dev *dev)
{
if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
return;
pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
}
DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
/*
* Following the PCI ordering rules is optional on the AMD762. I'm not
* sure what the designers were smoking but let's not inhale...
*
* To be fair to AMD, it follows the spec by default, its BIOS people
* who turn it off!
*/
static void __devinit quirk_amd_ordering(struct pci_dev *dev)
{
u32 pcic;
pci_read_config_dword(dev, 0x4C, &pcic);
if ((pcic&6)!=6) {
pcic |= 6;
printk(KERN_WARNING "BIOS failed to enable PCI standards compliance, fixing this error.\n");
pci_write_config_dword(dev, 0x4C, pcic);
pci_read_config_dword(dev, 0x84, &pcic);
pcic |= (1<<23); /* Required in this mode */
pci_write_config_dword(dev, 0x84, pcic);
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering );
/*
* DreamWorks provided workaround for Dunord I-3000 problem
*
* This card decodes and responds to addresses not apparently
* assigned to it. We force a larger allocation to ensure that
* nothing gets put too close to it.
*/
static void __devinit quirk_dunord ( struct pci_dev * dev )
{
struct resource *r = &dev->resource [1];
r->start = 0;
r->end = 0xffffff;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord );
/*
* i82380FB mobile docking controller: its PCI-to-PCI bridge
* is subtractive decoding (transparent), and does indicate this
* in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
* instead of 0x01.
*/
static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
{
dev->transparent = 1;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge );
/*
* Common misconfiguration of the MediaGX/Geode PCI master that will
* reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
* datasheets found at http://www.national.com/ds/GX for info on what
* these bits do. <christer@weinigel.se>
*/
static void __init quirk_mediagx_master(struct pci_dev *dev)
{
u8 reg;
pci_read_config_byte(dev, 0x41, &reg);
if (reg & 2) {
reg &= ~2;
printk(KERN_INFO "PCI: Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
pci_write_config_byte(dev, 0x41, reg);
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master );
/*
* As per PCI spec, ignore base address registers 0-3 of the IDE controllers
* running in Compatible mode (bits 0 and 2 in the ProgIf for primary and
* secondary channels respectively). If the device reports Compatible mode
* but does use BAR0-3 for address decoding, we assume that firmware has
* programmed these BARs with standard values (0x1f0,0x3f4 and 0x170,0x374).
* Exceptions (if they exist) must be handled in chip/architecture specific
* fixups.
*
* Note: for non x86 people. You may need an arch specific quirk to handle
* moving IDE devices to native mode as well. Some plug in card devices power
* up in compatible mode and assume the BIOS will adjust them.
*
* Q: should we load the 0x1f0,0x3f4 into the registers or zap them as
* we do now ? We don't want is pci_enable_device to come along
* and assign new resources. Both approaches work for that.
*/
static void __devinit quirk_ide_bases(struct pci_dev *dev)
{
struct resource *res;
int first_bar = 2, last_bar = 0;
if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
return;
res = &dev->resource[0];
/* primary channel: ProgIf bit 0, BAR0, BAR1 */
if (!(dev->class & 1) && (res[0].flags || res[1].flags)) {
res[0].start = res[0].end = res[0].flags = 0;
res[1].start = res[1].end = res[1].flags = 0;
first_bar = 0;
last_bar = 1;
}
/* secondary channel: ProgIf bit 2, BAR2, BAR3 */
if (!(dev->class & 4) && (res[2].flags || res[3].flags)) {
res[2].start = res[2].end = res[2].flags = 0;
res[3].start = res[3].end = res[3].flags = 0;
last_bar = 3;
}
if (!last_bar)
return;
printk(KERN_INFO "PCI: Ignoring BAR%d-%d of IDE controller %s\n",
first_bar, last_bar, pci_name(dev));
}
DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_ide_bases);
/*
* Ensure C0 rev restreaming is off. This is normally done by
* the BIOS but in the odd case it is not the results are corruption
* hence the presence of a Linux check
*/
static void __init quirk_disable_pxb(struct pci_dev *pdev)
{
u16 config;
u8 rev;
pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
if (rev != 0x04) /* Only C0 requires this */
return;
pci_read_config_word(pdev, 0x40, &config);
if (config & (1<<6)) {
config &= ~(1<<6);
pci_write_config_word(pdev, 0x40, config);
printk(KERN_INFO "PCI: C0 revision 450NX. Disabling PCI restreaming.\n");
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb );
/*
* Serverworks CSB5 IDE does not fully support native mode
*/
static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
{
u8 prog;
pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
if (prog & 5) {
prog &= ~5;
pdev->class &= ~5;
pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
/* need to re-assign BARs for compat mode */
quirk_ide_bases(pdev);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide );
/*
* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
*/
static void __init quirk_ide_samemode(struct pci_dev *pdev)
{
u8 prog;
pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
printk(KERN_INFO "PCI: IDE mode mismatch; forcing legacy mode\n");
prog &= ~5;
pdev->class &= ~5;
pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
/* need to re-assign BARs for compat mode */
quirk_ide_bases(pdev);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
/* This was originally an Alpha specific thing, but it really fits here.
* The i82375 PCI/EISA bridge appears as non-classified. Fix that.
*/
static void __init quirk_eisa_bridge(struct pci_dev *dev)
{
dev->class = PCI_CLASS_BRIDGE_EISA << 8;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge );
/*
* On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
* is not activated. The myth is that Asus said that they do not want the
* users to be irritated by just another PCI Device in the Win98 device
* manager. (see the file prog/hotplug/README.p4b in the lm_sensors
* package 2.7.0 for details)
*
* The SMBus PCI Device can be activated by setting a bit in the ICH LPC
* bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
* becomes necessary to do this tweak in two steps -- I've chosen the Host
* bridge as trigger.
*/
static int __initdata asus_hides_smbus = 0;
static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
{
if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
switch(dev->subsystem_device) {
case 0x8070: /* P4B */
case 0x8088: /* P4B533 */
case 0x1626: /* L3C notebook */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
switch(dev->subsystem_device) {
case 0x80b1: /* P4GE-V */
case 0x80b2: /* P4PE */
case 0x8093: /* P4B533-V */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
switch(dev->subsystem_device) {
case 0x8030: /* P4T533 */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
switch (dev->subsystem_device) {
case 0x8070: /* P4G8X Deluxe */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
switch (dev->subsystem_device) {
case 0x1751: /* M2N notebook */
case 0x1821: /* M5N notebook */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
switch (dev->subsystem_device) {
case 0x184b: /* W1N notebook */
case 0x186a: /* M6Ne notebook */
asus_hides_smbus = 1;
}
} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
switch(dev->subsystem_device) {
case 0x088C: /* HP Compaq nc8000 */
case 0x0890: /* HP Compaq nc6000 */
asus_hides_smbus = 1;
}
if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
switch (dev->subsystem_device) {
case 0x12bc: /* HP D330L */
asus_hides_smbus = 1;
}
} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_TOSHIBA)) {
if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
switch(dev->subsystem_device) {
case 0x0001: /* Toshiba Satellite A40 */
asus_hides_smbus = 1;
}
} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
switch(dev->subsystem_device) {
case 0xC00C: /* Samsung P35 notebook */
asus_hides_smbus = 1;
}
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge );
static void __init asus_hides_smbus_lpc(struct pci_dev *dev)
{
u16 val;
if (likely(!asus_hides_smbus))
return;
pci_read_config_word(dev, 0xF2, &val);
if (val & 0x8) {
pci_write_config_word(dev, 0xF2, val & (~0x8));
pci_read_config_word(dev, 0xF2, &val);
if (val & 0x8)
printk(KERN_INFO "PCI: i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
else
printk(KERN_INFO "PCI: Enabled i801 SMBus device\n");
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc );
/*
* SiS 96x south bridge: BIOS typically hides SMBus device...
*/
static void __init quirk_sis_96x_smbus(struct pci_dev *dev)
{
u8 val = 0;
printk(KERN_INFO "Enabling SiS 96x SMBus.\n");
pci_read_config_byte(dev, 0x77, &val);
pci_write_config_byte(dev, 0x77, val & ~0x10);
pci_read_config_byte(dev, 0x77, &val);
}
#define UHCI_USBLEGSUP 0xc0 /* legacy support */
#define UHCI_USBCMD 0 /* command register */
#define UHCI_USBSTS 2 /* status register */
#define UHCI_USBINTR 4 /* interrupt register */
#define UHCI_USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */
#define UHCI_USBCMD_RUN (1 << 0) /* RUN/STOP bit */
#define UHCI_USBCMD_GRESET (1 << 2) /* Global reset */
#define UHCI_USBCMD_CONFIGURE (1 << 6) /* config semaphore */
#define UHCI_USBSTS_HALTED (1 << 5) /* HCHalted bit */
#define OHCI_CONTROL 0x04
#define OHCI_CMDSTATUS 0x08
#define OHCI_INTRSTATUS 0x0c
#define OHCI_INTRENABLE 0x10
#define OHCI_INTRDISABLE 0x14
#define OHCI_OCR (1 << 3) /* ownership change request */
#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
#define OHCI_INTR_OC (1 << 30) /* ownership change */
#define EHCI_HCC_PARAMS 0x08 /* extended capabilities */
#define EHCI_USBCMD 0 /* command register */
#define EHCI_USBCMD_RUN (1 << 0) /* RUN/STOP bit */
#define EHCI_USBSTS 4 /* status register */
#define EHCI_USBSTS_HALTED (1 << 12) /* HCHalted bit */
#define EHCI_USBINTR 8 /* interrupt register */
#define EHCI_USBLEGSUP 0 /* legacy support register */
#define EHCI_USBLEGSUP_BIOS (1 << 16) /* BIOS semaphore */
#define EHCI_USBLEGSUP_OS (1 << 24) /* OS semaphore */
#define EHCI_USBLEGCTLSTS 4 /* legacy control/status */
#define EHCI_USBLEGCTLSTS_SOOE (1 << 13) /* SMI on ownership change */
int usb_early_handoff __devinitdata = 0;
static int __init usb_handoff_early(char *str)
{
usb_early_handoff = 1;
return 0;
}
__setup("usb-handoff", usb_handoff_early);
static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev)
{
unsigned long base = 0;
int wait_time, delta;
u16 val, sts;
int i;
for (i = 0; i < PCI_ROM_RESOURCE; i++)
if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
base = pci_resource_start(pdev, i);
break;
}
if (!base)
return;
/*
* stop controller
*/
sts = inw(base + UHCI_USBSTS);
val = inw(base + UHCI_USBCMD);
val &= ~(u16)(UHCI_USBCMD_RUN | UHCI_USBCMD_CONFIGURE);
outw(val, base + UHCI_USBCMD);
/*
* wait while it stops if it was running
*/
if ((sts & UHCI_USBSTS_HALTED) == 0)
{
wait_time = 1000;
delta = 100;
do {
outw(0x1f, base + UHCI_USBSTS);
udelay(delta);
wait_time -= delta;
val = inw(base + UHCI_USBSTS);
if (val & UHCI_USBSTS_HALTED)
break;
} while (wait_time > 0);
}
/*
* disable interrupts & legacy support
*/
outw(0, base + UHCI_USBINTR);
outw(0x1f, base + UHCI_USBSTS);
pci_read_config_word(pdev, UHCI_USBLEGSUP, &val);
if (val & 0xbf)
pci_write_config_word(pdev, UHCI_USBLEGSUP, UHCI_USBLEGSUP_DEFAULT);
}
static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
{
void __iomem *base;
int wait_time;
base = ioremap_nocache(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (base == NULL) return;
if (readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) {
wait_time = 500; /* 0.5 seconds */
writel(OHCI_INTR_OC, base + OHCI_INTRENABLE);
writel(OHCI_OCR, base + OHCI_CMDSTATUS);
while (wait_time > 0 &&
readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) {
wait_time -= 10;
msleep(10);
}
}
/*
* disable interrupts
*/
writel(~(u32)0, base + OHCI_INTRDISABLE);
writel(~(u32)0, base + OHCI_INTRSTATUS);
iounmap(base);
}
static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
{
int wait_time, delta;
void __iomem *base, *op_reg_base;
u32 hcc_params, val, temp;
u8 cap_length;
base = ioremap_nocache(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (base == NULL) return;
cap_length = readb(base);
op_reg_base = base + cap_length;
hcc_params = readl(base + EHCI_HCC_PARAMS);
hcc_params = (hcc_params >> 8) & 0xff;
if (hcc_params) {
pci_read_config_dword(pdev,
hcc_params + EHCI_USBLEGSUP,
&val);
if (((val & 0xff) == 1) && (val & EHCI_USBLEGSUP_BIOS)) {
/*
* Ok, BIOS is in smm mode, try to hand off...
*/
pci_read_config_dword(pdev,
hcc_params + EHCI_USBLEGCTLSTS,
&temp);
pci_write_config_dword(pdev,
hcc_params + EHCI_USBLEGCTLSTS,
temp | EHCI_USBLEGCTLSTS_SOOE);
val |= EHCI_USBLEGSUP_OS;
pci_write_config_dword(pdev,
hcc_params + EHCI_USBLEGSUP,
val);
wait_time = 500;
do {
msleep(10);
wait_time -= 10;
pci_read_config_dword(pdev,
hcc_params + EHCI_USBLEGSUP,
&val);
} while (wait_time && (val & EHCI_USBLEGSUP_BIOS));
if (!wait_time) {
/*
* well, possibly buggy BIOS...
*/
printk(KERN_WARNING "EHCI early BIOS handoff "
"failed (BIOS bug ?)\n");
pci_write_config_dword(pdev,
hcc_params + EHCI_USBLEGSUP,
EHCI_USBLEGSUP_OS);
pci_write_config_dword(pdev,
hcc_params + EHCI_USBLEGCTLSTS,
0);
}
}
}
/*
* halt EHCI & disable its interrupts in any case
*/
val = readl(op_reg_base + EHCI_USBSTS);
if ((val & EHCI_USBSTS_HALTED) == 0) {
val = readl(op_reg_base + EHCI_USBCMD);
val &= ~EHCI_USBCMD_RUN;
writel(val, op_reg_base + EHCI_USBCMD);
wait_time = 2000;
delta = 100;
do {
writel(0x3f, op_reg_base + EHCI_USBSTS);
udelay(delta);
wait_time -= delta;
val = readl(op_reg_base + EHCI_USBSTS);
if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) {
break;
}
} while (wait_time > 0);
}
writel(0, op_reg_base + EHCI_USBINTR);
writel(0x3f, op_reg_base + EHCI_USBSTS);
iounmap(base);
return;
}
static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev)
{
if (!usb_early_handoff)
return;
if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x00)) { /* UHCI */
quirk_usb_handoff_uhci(pdev);
} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x10)) { /* OHCI */
quirk_usb_handoff_ohci(pdev);
} else if (pdev->class == ((PCI_CLASS_SERIAL_USB << 8) | 0x20)) { /* EHCI */
quirk_usb_disable_ehci(pdev);
}
return;
}
DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff);
/*
* ... This is further complicated by the fact that some SiS96x south
* bridges pretend to be 85C503/5513 instead. In that case see if we
* spotted a compatible north bridge to make sure.
* (pci_find_device doesn't work yet)
*
* We can also enable the sis96x bit in the discovery register..
*/
static int __devinitdata sis_96x_compatible = 0;
#define SIS_DETECT_REGISTER 0x40
static void __init quirk_sis_503(struct pci_dev *dev)
{
u8 reg;
u16 devid;
pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
return;
}
/* Make people aware that we changed the config.. */
printk(KERN_WARNING "Uncovering SIS%x that hid as a SIS503 (compatible=%d)\n", devid, sis_96x_compatible);
/*
* Ok, it now shows up as a 96x.. The 96x quirks are after
* the 503 quirk in the quirk table, so they'll automatically
* run and enable things like the SMBus device
*/
dev->device = devid;
}
static void __init quirk_sis_96x_compatible(struct pci_dev *dev)
{
sis_96x_compatible = 1;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_645, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_646, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_648, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_650, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_651, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_735, quirk_sis_96x_compatible );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503 );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus );
#ifdef CONFIG_X86_IO_APIC
static void __init quirk_alder_ioapic(struct pci_dev *pdev)
{
int i;
if ((pdev->class >> 8) != 0xff00)
return;
/* the first BAR is the location of the IO APIC...we must
* not touch this (and it's already covered by the fixmap), so
* forcibly insert it into the resource tree */
if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
insert_resource(&iomem_resource, &pdev->resource[0]);
/* The next five BARs all seem to be rubbish, so just clean
* them out */
for (i=1; i < 6; i++) {
memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic );
#endif
#ifdef CONFIG_SCSI_SATA
static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
{
u8 prog, comb, tmp;
int ich = 0;
/*
* Narrow down to Intel SATA PCI devices.
*/
switch (pdev->device) {
/* PCI ids taken from drivers/scsi/ata_piix.c */
case 0x24d1:
case 0x24df:
case 0x25a3:
case 0x25b0:
ich = 5;
break;
case 0x2651:
case 0x2652:
case 0x2653:
case 0x2680: /* ESB2 */
ich = 6;
break;
case 0x27c0:
case 0x27c4:
ich = 7;
break;
default:
/* we do not handle this PCI device */
return;
}
/*
* Read combined mode register.
*/
pci_read_config_byte(pdev, 0x90, &tmp); /* combined mode reg */
if (ich == 5) {
tmp &= 0x6; /* interesting bits 2:1, PATA primary/secondary */
if (tmp == 0x4) /* bits 10x */
comb = (1 << 0); /* SATA port 0, PATA port 1 */
else if (tmp == 0x6) /* bits 11x */
comb = (1 << 2); /* PATA port 0, SATA port 1 */
else
return; /* not in combined mode */
} else {
WARN_ON((ich != 6) && (ich != 7));
tmp &= 0x3; /* interesting bits 1:0 */
if (tmp & (1 << 0))
comb = (1 << 2); /* PATA port 0, SATA port 1 */
else if (tmp & (1 << 1))
comb = (1 << 0); /* SATA port 0, PATA port 1 */
else
return; /* not in combined mode */
}
/*
* Read programming interface register.
* (Tells us if it's legacy or native mode)
*/
pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
/* if SATA port is in native mode, we're ok. */
if (prog & comb)
return;
/* SATA port is in legacy mode. Reserve port so that
* IDE driver does not attempt to use it. If request_region
* fails, it will be obvious at boot time, so we don't bother
* checking return values.
*/
if (comb == (1 << 0))
request_region(0x1f0, 8, "libata"); /* port 0 */
else
request_region(0x170, 8, "libata"); /* port 1 */
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_intel_ide_combined );
#endif /* CONFIG_SCSI_SATA */
int pcie_mch_quirk;
static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
{
pcie_mch_quirk = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch );
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch );
static void __devinit quirk_netmos(struct pci_dev *dev)
{
unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
unsigned int num_serial = dev->subsystem_device & 0xf;
/*
* These Netmos parts are multiport serial devices with optional
* parallel ports. Even when parallel ports are present, they
* are identified as class SERIAL, which means the serial driver
* will claim them. To prevent this, mark them as class OTHER.
* These combo devices should be claimed by parport_serial.
*
* The subdevice ID is of the form 0x00PS, where <P> is the number
* of parallel ports and <S> is the number of serial ports.
*/
switch (dev->device) {
case PCI_DEVICE_ID_NETMOS_9735:
case PCI_DEVICE_ID_NETMOS_9745:
case PCI_DEVICE_ID_NETMOS_9835:
case PCI_DEVICE_ID_NETMOS_9845:
case PCI_DEVICE_ID_NETMOS_9855:
if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
num_parallel) {
printk(KERN_INFO "PCI: Netmos %04x (%u parallel, "
"%u serial); changing class SERIAL to OTHER "
"(use parport_serial)\n",
dev->device, num_parallel, num_serial);
dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
(dev->class & 0xff);
}
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
{
while (f < end) {
if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
(f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
pr_debug("PCI: Calling quirk %p for %s\n", f->hook, pci_name(dev));
f->hook(dev);
}
f++;
}
}
extern struct pci_fixup __start_pci_fixups_early[];
extern struct pci_fixup __end_pci_fixups_early[];
extern struct pci_fixup __start_pci_fixups_header[];
extern struct pci_fixup __end_pci_fixups_header[];
extern struct pci_fixup __start_pci_fixups_final[];
extern struct pci_fixup __end_pci_fixups_final[];
extern struct pci_fixup __start_pci_fixups_enable[];
extern struct pci_fixup __end_pci_fixups_enable[];
void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
{
struct pci_fixup *start, *end;
switch(pass) {
case pci_fixup_early:
start = __start_pci_fixups_early;
end = __end_pci_fixups_early;
break;
case pci_fixup_header:
start = __start_pci_fixups_header;
end = __end_pci_fixups_header;
break;
case pci_fixup_final:
start = __start_pci_fixups_final;
end = __end_pci_fixups_final;
break;
case pci_fixup_enable:
start = __start_pci_fixups_enable;
end = __end_pci_fixups_enable;
break;
default:
/* stupid compiler warning, you would think with an enum... */
return;
}
pci_do_fixups(dev, start, end);
}
EXPORT_SYMBOL(pcie_mch_quirk);
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pci_fixup_device);
#endif
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