/* * 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> * * Init/reset quirks for USB host controllers should be in the * USB quirks file, where their drivers can access reuse it. * * 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/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" /* The Mellanox Tavor device gives false positive parity errors * Mark this device with a broken_parity_status, to allow * PCI scanning code to "skip" this now blacklisted device. */ static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) { dev->broken_parity_status = 1; /* This device gives false positives */ } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); /* 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, const char *name) { region &= ~(size-1); if (region) { struct pci_bus_region bus_region; struct resource *res = dev->resource + nr; res->name = pci_name(dev); res->start = region; res->end = region + size - 1; res->flags = IORESOURCE_IO; /* Convert from PCI bus to resource space. */ bus_region.start = res->start; bus_region.end = res->end; pcibios_bus_to_resource(dev, res, &bus_region); pci_claim_resource(dev, nr); printk("PCI quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name); } } /* * 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, ®ion); quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); pci_read_config_word(dev, 0xE2, ®ion); quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi ); static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) { u32 devres; u32 mask, size, base; pci_read_config_dword(dev, port, &devres); if ((devres & enable) != enable) return; mask = (devres >> 16) & 15; base = devres & 0xffff; size = 16; for (;;) { unsigned bit = size >> 1; if ((bit & mask) == bit) break; size = bit; } /* * For now we only print it out. Eventually we'll want to * reserve it (at least if it's in the 0x1000+ range), but * let's get enough confirmation reports first. */ base &= -size; printk("%s PIO at %04x-%04x\n", name, base, base + size - 1); } static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) { u32 devres; u32 mask, size, base; pci_read_config_dword(dev, port, &devres); if ((devres & enable) != enable) return; base = devres & 0xffff0000; mask = (devres & 0x3f) << 16; size = 128 << 16; for (;;) { unsigned bit = size >> 1; if ((bit & mask) == bit) break; size = bit; } /* * For now we only print it out. Eventually we'll want to * reserve it, but let's get enough confirmation reports first. */ base &= -size; printk("%s MMIO at %04x-%04x\n", name, base, base + size - 1); } /* * PIIX4 ACPI: Two IO regions pointed to by longwords at * 0x40 (64 bytes of ACPI registers) * 0x90 (16 bytes of SMB registers) * and a few strange programmable PIIX4 device resources. */ static void __devinit quirk_piix4_acpi(struct pci_dev *dev) { u32 region, res_a; pci_read_config_dword(dev, 0x40, ®ion); quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); pci_read_config_dword(dev, 0x90, ®ion); quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); /* Device resource A has enables for some of the other ones */ pci_read_config_dword(dev, 0x5c, &res_a); piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); /* Device resource D is just bitfields for static resources */ /* Device 12 enabled? */ if (res_a & (1 << 29)) { piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); } /* Device 13 enabled? */ if (res_a & (1 << 30)) { piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); } piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_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, ®ion); quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO"); pci_read_config_dword(dev, 0x58, ®ion); quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO"); } 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 ); static void __devinit quirk_ich6_lpc_acpi(struct pci_dev *dev) { u32 region; pci_read_config_dword(dev, 0x40, ®ion); quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO"); pci_read_config_dword(dev, 0x48, ®ion); quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc_acpi ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_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, ®ion); region &= PCI_BASE_ADDRESS_IO_MASK; quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); } } 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, "vt82c686 HW-mon"); pci_read_config_dword(dev, 0x90, &smb); smb &= PCI_BASE_ADDRESS_IO_MASK; quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi ); /* * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at * 0x88 (128 bytes of power management registers) * 0xd0 (16 bytes of SMB registers) */ static void __devinit quirk_vt8235_acpi(struct pci_dev *dev) { u16 pm, smb; pci_read_config_word(dev, 0x88, &pm); pm &= PCI_BASE_ADDRESS_IO_MASK; quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); pci_read_config_word(dev, 0xd0, &smb); smb &= PCI_BASE_ADDRESS_IO_MASK; quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_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 ); /* * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit. * This leads to doubled level interrupt rates. * Set this bit to get rid of cycle wastage. * Otherwise uncritical. */ static void __devinit quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) { u8 misc_control2; #define BYPASS_APIC_DEASSERT 8 pci_read_config_byte(dev, 0x5B, &misc_control2); if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { printk(KERN_INFO "PCI: Bypassing VIA 8237 APIC De-Assert Message\n"); pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); /* * 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 ); #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; 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_BRIDGE, quirk_amd_8131_ioapic); #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. * * Some of the on-chip devices are actually '586 devices' so they are * listed here. */ 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_DEVICE_ID_VIA_82C586_0, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_irq); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, quirk_via_irq); /* * 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 ); #ifdef CONFIG_ACPI_SLEEP /* * Some VIA systems boot with the abnormal status flag set. This can cause * the BIOS to re-POST the system on resume rather than passing control * back to the OS. Clear the flag on boot */ static void __devinit quirk_via_abnormal_poweroff(struct pci_dev *dev) { u32 reg; acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS, ®); if (reg & 0x800) { printk("Clearing abnormal poweroff flag\n"); acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS, (u16)0x800); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_abnormal_poweroff); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_abnormal_poweroff); #endif /* * 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, ®); 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 the MSI-K8T-Neo2Fir Board, the internal Soundcard is disabled * when a PCI-Soundcard is added. The BIOS only gives Options * "Disabled" and "AUTO". This Quirk Sets the corresponding * Register-Value to enable the Soundcard. * * FIXME: Presently this quirk will run on anything that has an 8237 * which isn't correct, we need to check DMI tables or something in * order to make sure it only runs on the MSI-K8T-Neo2Fir. Because it * runs everywhere at present we suppress the printk output in most * irrelevant cases. */ static void __init k8t_sound_hostbridge(struct pci_dev *dev) { unsigned char val; pci_read_config_byte(dev, 0x50, &val); if (val == 0x88 || val == 0xc8) { /* Assume it's probably a MSI-K8T-Neo2Fir */ printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, attempting to turn soundcard ON\n"); pci_write_config_byte(dev, 0x50, val & (~0x40)); /* Verify the Change for Status output */ pci_read_config_byte(dev, 0x50, &val); if (val & 0x40) printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, soundcard still off\n"); else printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, soundcard on\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge); #ifndef CONFIG_ACPI_SLEEP /* * 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. * * Actually, leaving it unhidden and not redoing the quirk over suspend2ram * will cause thermal management to break down, and causing machine to * overheat. */ static int __initdata asus_hides_smbus; 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 0x8025: /* P4B-LX */ 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_E7501_MCH) switch (dev->subsystem_device) { case 0x80c9: /* PU-DLS */ 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; } if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) { switch (dev->subsystem_device) { case 0x1882: /* M6V notebook */ case 0x1977: /* A6VA 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 */ case 0x12bd: /* HP D530 */ asus_hides_smbus = 1; } if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) { switch (dev->subsystem_device) { case 0x099c: /* HP Compaq nx6110 */ 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; } if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch(dev->subsystem_device) { case 0x0001: /* Toshiba Tecra M2 */ 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; } } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch(dev->subsystem_device) { case 0x0058: /* Compaq Evo N620c */ 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_E7501_MCH, 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 ); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_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_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 ); static void __init asus_hides_smbus_lpc_ich6(struct pci_dev *dev) { u32 val, rcba; void __iomem *base; if (likely(!asus_hides_smbus)) return; pci_read_config_dword(dev, 0xF0, &rcba); base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); /* use bits 31:14, 16 kB aligned */ if (base == NULL) return; val=readl(base + 0x3418); /* read the Function Disable register, dword mode only */ writel(val & 0xFFFFFFF7, base + 0x3418); /* enable the SMBus device */ iounmap(base); printk(KERN_INFO "PCI: Enabled ICH6/i801 SMBus device\n"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6 ); #endif /* * 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); } /* * ... 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, ®); 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 ); /* * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller * and MC97 modem controller are disabled when a second PCI soundcard is * present. This patch, tweaking the VT8237 ISA bridge, enables them. * -- bjd */ static void __init asus_hides_ac97_lpc(struct pci_dev *dev) { u8 val; int asus_hides_ac97 = 0; if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { if (dev->device == PCI_DEVICE_ID_VIA_8237) asus_hides_ac97 = 1; } if (!asus_hides_ac97) return; pci_read_config_byte(dev, 0x50, &val); if (val & 0xc0) { pci_write_config_byte(dev, 0x50, val & (~0xc0)); pci_read_config_byte(dev, 0x50, &val); if (val & 0xc0) printk(KERN_INFO "PCI: onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); else printk(KERN_INFO "PCI: enabled onboard AC97/MC97 devices\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc ); 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 ); #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) /* * If we are using libata we can drive this chip properly but must * do this early on to make the additional device appear during * the PCI scanning. */ static void __devinit quirk_jmicron_dualfn(struct pci_dev *pdev) { u32 conf; u8 hdr; /* Only poke fn 0 */ if (PCI_FUNC(pdev->devfn)) return; switch(pdev->device) { case PCI_DEVICE_ID_JMICRON_JMB365: case PCI_DEVICE_ID_JMICRON_JMB366: /* Redirect IDE second PATA port to the right spot */ pci_read_config_dword(pdev, 0x80, &conf); conf |= (1 << 24); /* Fall through */ pci_write_config_dword(pdev, 0x80, conf); case PCI_DEVICE_ID_JMICRON_JMB361: case PCI_DEVICE_ID_JMICRON_JMB363: pci_read_config_dword(pdev, 0x40, &conf); /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ /* Set the class codes correctly and then direct IDE 0 */ conf &= ~0x000F0200; /* Clear bit 9 and 16-19 */ conf |= 0x00C20002; /* Set bit 1, 17, 22, 23 */ pci_write_config_dword(pdev, 0x40, conf); /* Reconfigure so that the PCI scanner discovers the device is now multifunction */ pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); pdev->hdr_type = hdr & 0x7f; pdev->multifunction = !!(hdr & 0x80); break; } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, quirk_jmicron_dualfn); #endif #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 enum ide_combined_type { COMBINED = 0, IDE = 1, LIBATA = 2 }; /* Defaults to combined */ static enum ide_combined_type combined_mode; static int __init combined_setup(char *str) { if (!strncmp(str, "ide", 3)) combined_mode = IDE; else if (!strncmp(str, "libata", 6)) combined_mode = LIBATA; else /* "combined" or anything else defaults to old behavior */ combined_mode = COMBINED; return 1; } __setup("combined_mode=", combined_setup); #ifdef CONFIG_SATA_INTEL_COMBINED 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; case 0x2828: /* ICH8M */ ich = 8; 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) && (ich != 8)); 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; /* Don't reserve any so the IDE driver can get them (but only if * combined_mode=ide). */ if (combined_mode == IDE) return; /* Grab them both for libata if combined_mode=libata. */ if (combined_mode == LIBATA) { request_region(0x1f0, 8, "libata"); /* port 0 */ request_region(0x170, 8, "libata"); /* port 1 */ 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_SATA_INTEL_COMBINED */ 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 ); /* * It's possible for the MSI to get corrupted if shpc and acpi * are used together on certain PXH-based systems. */ static void __devinit quirk_pcie_pxh(struct pci_dev *dev) { disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI), PCI_CAP_ID_MSI); dev->no_msi = 1; printk(KERN_WARNING "PCI: PXH quirk detected, " "disabling MSI for SHPC device\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); /* * Some Intel PCI Express chipsets have trouble with downstream * device power management. */ static void quirk_intel_pcie_pm(struct pci_dev * dev) { pci_pm_d3_delay = 120; dev->no_d1d2 = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); /* * Fixup the cardbus bridges on the IBM Dock II docking station */ static void __devinit quirk_ibm_dock2_cardbus(struct pci_dev *dev) { u32 val; /* * tie the 2 interrupt pins to INTA, and configure the * multifunction routing register to handle this. */ if ((dev->subsystem_vendor == PCI_VENDOR_ID_IBM) && (dev->subsystem_device == 0x0148)) { printk(KERN_INFO "PCI: Found IBM Dock II Cardbus Bridge " "applying quirk\n"); pci_read_config_dword(dev, 0x8c, &val); val = ((val & 0xffffff00) | 0x1002); pci_write_config_dword(dev, 0x8c, val); pci_read_config_dword(dev, 0x80, &val); val = ((val & 0x00ffff00) | 0x2864c077); pci_write_config_dword(dev, 0x80, val); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, quirk_ibm_dock2_cardbus); 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 __devinit quirk_e100_interrupt(struct pci_dev *dev) { u16 command; u32 bar; u8 __iomem *csr; u8 cmd_hi; switch (dev->device) { /* PCI IDs taken from drivers/net/e100.c */ case 0x1029: case 0x1030 ... 0x1034: case 0x1038 ... 0x103E: case 0x1050 ... 0x1057: case 0x1059: case 0x1064 ... 0x106B: case 0x1091 ... 0x1095: case 0x1209: case 0x1229: case 0x2449: case 0x2459: case 0x245D: case 0x27DC: break; default: return; } /* * Some firmware hands off the e100 with interrupts enabled, * which can cause a flood of interrupts if packets are * received before the driver attaches to the device. So * disable all e100 interrupts here. The driver will * re-enable them when it's ready. */ pci_read_config_word(dev, PCI_COMMAND, &command); pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar); if (!(command & PCI_COMMAND_MEMORY) || !bar) return; csr = ioremap(bar, 8); if (!csr) { printk(KERN_WARNING "PCI: Can't map %s e100 registers\n", pci_name(dev)); return; } cmd_hi = readb(csr + 3); if (cmd_hi == 0) { printk(KERN_WARNING "PCI: Firmware left %s e100 interrupts " "enabled, disabling\n", pci_name(dev)); writeb(1, csr + 3); } iounmap(csr); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt); static void __devinit fixup_rev1_53c810(struct pci_dev* dev) { /* rev 1 ncr53c810 chips don't set the class at all which means * they don't get their resources remapped. Fix that here. */ if (dev->class == PCI_CLASS_NOT_DEFINED) { printk(KERN_INFO "NCR 53c810 rev 1 detected, setting PCI class.\n"); dev->class = PCI_CLASS_STORAGE_SCSI; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 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); } /* Enable 1k I/O space granularity on the Intel P64H2 */ static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev) { u16 en1k; u8 io_base_lo, io_limit_lo; unsigned long base, limit; struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; pci_read_config_word(dev, 0x40, &en1k); if (en1k & 0x200) { printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n"); pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; if (base <= limit) { res->start = base; res->end = limit + 0x3ff; } } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); /* Under some circumstances, AER is not linked with extended capabilities. * Force it to be linked by setting the corresponding control bit in the * config space. */ static void __devinit quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) { uint8_t b; if (pci_read_config_byte(dev, 0xf41, &b) == 0) { if (!(b & 0x20)) { pci_write_config_byte(dev, 0xf41, b | 0x20); printk(KERN_INFO "PCI: Linking AER extended capability on %s\n", pci_name(dev)); } } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, quirk_nvidia_ck804_pcie_aer_ext_cap); #ifdef CONFIG_PCI_MSI /* To disable MSI globally */ int pci_msi_quirk; /* The Serverworks PCI-X chipset does not support MSI. We cannot easily rely * on setting PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually * some other busses controlled by the chipset even if Linux is not aware of it. * Instead of setting the flag on all busses in the machine, simply disable MSI * globally. */ 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); /* Disable MSI on chipsets that are known to not support it */ static void __devinit quirk_disable_msi(struct pci_dev *dev) { if (dev->subordinate) { printk(KERN_WARNING "PCI: MSI quirk detected. " "PCI_BUS_FLAGS_NO_MSI set for %s subordinate bus.\n", pci_name(dev)); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); /* Go through the list of Hypertransport capabilities and * return 1 if a HT MSI capability is found and enabled */ static int __devinit msi_ht_cap_enabled(struct pci_dev *dev) { u8 pos; int ttl; for (pos = pci_find_capability(dev, PCI_CAP_ID_HT), ttl = 48; pos && ttl; pos = pci_find_next_capability(dev, pos, PCI_CAP_ID_HT), ttl--) { u32 cap_hdr; /* MSI mapping section according to Hypertransport spec */ if (pci_read_config_dword(dev, pos, &cap_hdr) == 0 && (cap_hdr & 0xf8000000) == 0xa8000000 /* MSI mapping */) { printk(KERN_INFO "PCI: Found HT MSI mapping on %s with capability %s\n", pci_name(dev), cap_hdr & 0x10000 ? "enabled" : "disabled"); return (cap_hdr & 0x10000) != 0; /* MSI mapping cap enabled */ } } return 0; } /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */ static void __devinit quirk_msi_ht_cap(struct pci_dev *dev) { if (dev->subordinate && !msi_ht_cap_enabled(dev)) { printk(KERN_WARNING "PCI: MSI quirk detected. " "MSI disabled on chipset %s.\n", pci_name(dev)); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, quirk_msi_ht_cap); /* The nVidia CK804 chipset may have 2 HT MSI mappings. * MSI are supported if the MSI capability set in any of these mappings. */ static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) { struct pci_dev *pdev; if (!dev->subordinate) return; /* check HT MSI cap on this chipset and the root one. * a single one having MSI is enough to be sure that MSI are supported. */ pdev = pci_find_slot(dev->bus->number, 0); if (dev->subordinate && !msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { printk(KERN_WARNING "PCI: MSI quirk detected. " "MSI disabled on chipset %s.\n", pci_name(dev)); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, quirk_nvidia_ck804_msi_ht_cap); #endif /* CONFIG_PCI_MSI */ EXPORT_SYMBOL(pcie_mch_quirk); #ifdef CONFIG_HOTPLUG EXPORT_SYMBOL(pci_fixup_device); #endif