2 * This file contains work-arounds for many known PCI hardware
3 * bugs. Devices present only on certain architectures (host
4 * bridges et cetera) should be handled in arch-specific code.
6 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
8 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
13 * The bridge optimization stuff has been removed. If you really
14 * have a silly BIOS which is unable to set your host bridge right,
15 * use the PowerTweak utility (see http://powertweak.sourceforge.net).
18 #include <linux/types.h>
19 #include <linux/kernel.h>
20 #include <linux/pci.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/acpi.h>
24 #include <linux/kallsyms.h>
25 #include <linux/dmi.h>
26 #include <linux/pci-aspm.h>
27 #include <linux/ioport.h>
28 #include <asm/dma.h> /* isa_dma_bridge_buggy */
32 * This quirk function disables memory decoding and releases memory resources
33 * of the device specified by kernel's boot parameter 'pci=resource_alignment='.
34 * It also rounds up size to specified alignment.
35 * Later on, the kernel will assign page-aligned memory resource back
38 static void __devinit quirk_resource_alignment(struct pci_dev *dev)
42 resource_size_t align, size;
45 if (!pci_is_reassigndev(dev))
48 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL &&
49 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
51 "Can't reassign resources to host bridge.\n");
56 "Disabling memory decoding and releasing memory resources.\n");
57 pci_read_config_word(dev, PCI_COMMAND, &command);
58 command &= ~PCI_COMMAND_MEMORY;
59 pci_write_config_word(dev, PCI_COMMAND, command);
61 align = pci_specified_resource_alignment(dev);
62 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) {
63 r = &dev->resource[i];
64 if (!(r->flags & IORESOURCE_MEM))
66 size = resource_size(r);
70 "Rounding up size of resource #%d to %#llx.\n",
71 i, (unsigned long long)size);
76 /* Need to disable bridge's resource window,
77 * to enable the kernel to reassign new resource
80 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
81 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
82 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
83 r = &dev->resource[i];
84 if (!(r->flags & IORESOURCE_MEM))
86 r->end = resource_size(r) - 1;
89 pci_disable_bridge_window(dev);
92 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment);
94 /* The Mellanox Tavor device gives false positive parity errors
95 * Mark this device with a broken_parity_status, to allow
96 * PCI scanning code to "skip" this now blacklisted device.
98 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
100 dev->broken_parity_status = 1; /* This device gives false positives */
102 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
105 /* Deal with broken BIOS'es that neglect to enable passive release,
106 which can cause problems in combination with the 82441FX/PPro MTRRs */
107 static void quirk_passive_release(struct pci_dev *dev)
109 struct pci_dev *d = NULL;
112 /* We have to make sure a particular bit is set in the PIIX3
113 ISA bridge, so we have to go out and find it. */
114 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
115 pci_read_config_byte(d, 0x82, &dlc);
117 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
119 pci_write_config_byte(d, 0x82, dlc);
123 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
124 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
126 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
127 but VIA don't answer queries. If you happen to have good contacts at VIA
128 ask them for me please -- Alan
130 This appears to be BIOS not version dependent. So presumably there is a
133 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
135 if (!isa_dma_bridge_buggy) {
136 isa_dma_bridge_buggy=1;
137 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
141 * Its not totally clear which chipsets are the problematic ones
142 * We know 82C586 and 82C596 variants are affected.
144 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
145 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
146 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
147 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
148 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
149 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
150 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
153 * Chipsets where PCI->PCI transfers vanish or hang
155 static void __devinit quirk_nopcipci(struct pci_dev *dev)
157 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
158 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
159 pci_pci_problems |= PCIPCI_FAIL;
162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
165 static void __devinit quirk_nopciamd(struct pci_dev *dev)
168 pci_read_config_byte(dev, 0x08, &rev);
171 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
172 pci_pci_problems |= PCIAGP_FAIL;
175 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
178 * Triton requires workarounds to be used by the drivers
180 static void __devinit quirk_triton(struct pci_dev *dev)
182 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
183 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
184 pci_pci_problems |= PCIPCI_TRITON;
187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
188 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
190 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
193 * VIA Apollo KT133 needs PCI latency patch
194 * Made according to a windows driver based patch by George E. Breese
195 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
196 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
197 * the info on which Mr Breese based his work.
199 * Updated based on further information from the site and also on
200 * information provided by VIA
202 static void quirk_vialatency(struct pci_dev *dev)
206 /* Ok we have a potential problem chipset here. Now see if we have
207 a buggy southbridge */
209 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
211 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
212 /* Check for buggy part revisions */
213 if (p->revision < 0x40 || p->revision > 0x42)
216 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
217 if (p==NULL) /* No problem parts */
219 /* Check for buggy part revisions */
220 if (p->revision < 0x10 || p->revision > 0x12)
225 * Ok we have the problem. Now set the PCI master grant to
226 * occur every master grant. The apparent bug is that under high
227 * PCI load (quite common in Linux of course) you can get data
228 * loss when the CPU is held off the bus for 3 bus master requests
229 * This happens to include the IDE controllers....
231 * VIA only apply this fix when an SB Live! is present but under
232 * both Linux and Windows this isnt enough, and we have seen
233 * corruption without SB Live! but with things like 3 UDMA IDE
234 * controllers. So we ignore that bit of the VIA recommendation..
237 pci_read_config_byte(dev, 0x76, &busarb);
238 /* Set bit 4 and bi 5 of byte 76 to 0x01
239 "Master priority rotation on every PCI master grant */
242 pci_write_config_byte(dev, 0x76, busarb);
243 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
249 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
250 /* Must restore this on a resume from RAM */
251 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
252 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
253 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
256 * VIA Apollo VP3 needs ETBF on BT848/878
258 static void __devinit quirk_viaetbf(struct pci_dev *dev)
260 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
261 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
262 pci_pci_problems |= PCIPCI_VIAETBF;
265 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
267 static void __devinit quirk_vsfx(struct pci_dev *dev)
269 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
270 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
271 pci_pci_problems |= PCIPCI_VSFX;
274 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
277 * Ali Magik requires workarounds to be used by the drivers
278 * that DMA to AGP space. Latency must be set to 0xA and triton
279 * workaround applied too
280 * [Info kindly provided by ALi]
282 static void __init quirk_alimagik(struct pci_dev *dev)
284 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
285 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
286 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
289 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
290 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
293 * Natoma has some interesting boundary conditions with Zoran stuff
296 static void __devinit quirk_natoma(struct pci_dev *dev)
298 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
299 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
300 pci_pci_problems |= PCIPCI_NATOMA;
303 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
304 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
305 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
306 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
307 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
311 * This chip can cause PCI parity errors if config register 0xA0 is read
312 * while DMAs are occurring.
314 static void __devinit quirk_citrine(struct pci_dev *dev)
316 dev->cfg_size = 0xA0;
318 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
321 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
322 * If it's needed, re-allocate the region.
324 static void __devinit quirk_s3_64M(struct pci_dev *dev)
326 struct resource *r = &dev->resource[0];
328 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
337 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
338 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
339 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
340 * (which conflicts w/ BAR1's memory range).
342 static void __devinit quirk_cs5536_vsa(struct pci_dev *dev)
344 if (pci_resource_len(dev, 0) != 8) {
345 struct resource *res = &dev->resource[0];
346 res->end = res->start + 8 - 1;
347 dev_info(&dev->dev, "CS5536 ISA bridge bug detected "
348 "(incorrect header); workaround applied.\n");
351 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
353 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
354 unsigned size, int nr, const char *name)
358 struct pci_bus_region bus_region;
359 struct resource *res = dev->resource + nr;
361 res->name = pci_name(dev);
363 res->end = region + size - 1;
364 res->flags = IORESOURCE_IO;
366 /* Convert from PCI bus to resource space. */
367 bus_region.start = res->start;
368 bus_region.end = res->end;
369 pcibios_bus_to_resource(dev, res, &bus_region);
371 if (pci_claim_resource(dev, nr) == 0)
372 dev_info(&dev->dev, "quirk: %pR claimed by %s\n",
378 * ATI Northbridge setups MCE the processor if you even
379 * read somewhere between 0x3b0->0x3bb or read 0x3d3
381 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
383 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
384 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
385 request_region(0x3b0, 0x0C, "RadeonIGP");
386 request_region(0x3d3, 0x01, "RadeonIGP");
388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
391 * Let's make the southbridge information explicit instead
392 * of having to worry about people probing the ACPI areas,
393 * for example.. (Yes, it happens, and if you read the wrong
394 * ACPI register it will put the machine to sleep with no
395 * way of waking it up again. Bummer).
397 * ALI M7101: Two IO regions pointed to by words at
398 * 0xE0 (64 bytes of ACPI registers)
399 * 0xE2 (32 bytes of SMB registers)
401 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
405 pci_read_config_word(dev, 0xE0, ®ion);
406 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
407 pci_read_config_word(dev, 0xE2, ®ion);
408 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
410 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
412 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
415 u32 mask, size, base;
417 pci_read_config_dword(dev, port, &devres);
418 if ((devres & enable) != enable)
420 mask = (devres >> 16) & 15;
421 base = devres & 0xffff;
424 unsigned bit = size >> 1;
425 if ((bit & mask) == bit)
430 * For now we only print it out. Eventually we'll want to
431 * reserve it (at least if it's in the 0x1000+ range), but
432 * let's get enough confirmation reports first.
435 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
438 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
441 u32 mask, size, base;
443 pci_read_config_dword(dev, port, &devres);
444 if ((devres & enable) != enable)
446 base = devres & 0xffff0000;
447 mask = (devres & 0x3f) << 16;
450 unsigned bit = size >> 1;
451 if ((bit & mask) == bit)
456 * For now we only print it out. Eventually we'll want to
457 * reserve it, but let's get enough confirmation reports first.
460 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
464 * PIIX4 ACPI: Two IO regions pointed to by longwords at
465 * 0x40 (64 bytes of ACPI registers)
466 * 0x90 (16 bytes of SMB registers)
467 * and a few strange programmable PIIX4 device resources.
469 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
473 pci_read_config_dword(dev, 0x40, ®ion);
474 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
475 pci_read_config_dword(dev, 0x90, ®ion);
476 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
478 /* Device resource A has enables for some of the other ones */
479 pci_read_config_dword(dev, 0x5c, &res_a);
481 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
482 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
484 /* Device resource D is just bitfields for static resources */
486 /* Device 12 enabled? */
487 if (res_a & (1 << 29)) {
488 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
489 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
491 /* Device 13 enabled? */
492 if (res_a & (1 << 30)) {
493 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
494 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
496 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
497 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
499 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
500 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
502 #define ICH_PMBASE 0x40
503 #define ICH_ACPI_CNTL 0x44
504 #define ICH4_ACPI_EN 0x10
505 #define ICH6_ACPI_EN 0x80
506 #define ICH4_GPIOBASE 0x58
507 #define ICH4_GPIO_CNTL 0x5c
508 #define ICH4_GPIO_EN 0x10
509 #define ICH6_GPIOBASE 0x48
510 #define ICH6_GPIO_CNTL 0x4c
511 #define ICH6_GPIO_EN 0x10
514 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
515 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
516 * 0x58 (64 bytes of GPIO I/O space)
518 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
524 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
525 * with low legacy (and fixed) ports. We don't know the decoding
526 * priority and can't tell whether the legacy device or the one created
527 * here is really at that address. This happens on boards with broken
531 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
532 if (enable & ICH4_ACPI_EN) {
533 pci_read_config_dword(dev, ICH_PMBASE, ®ion);
534 region &= PCI_BASE_ADDRESS_IO_MASK;
535 if (region >= PCIBIOS_MIN_IO)
536 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
537 "ICH4 ACPI/GPIO/TCO");
540 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
541 if (enable & ICH4_GPIO_EN) {
542 pci_read_config_dword(dev, ICH4_GPIOBASE, ®ion);
543 region &= PCI_BASE_ADDRESS_IO_MASK;
544 if (region >= PCIBIOS_MIN_IO)
545 quirk_io_region(dev, region, 64,
546 PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO");
549 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
550 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
551 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
552 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
553 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
554 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
555 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
556 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
557 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
558 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
560 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
565 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
566 if (enable & ICH6_ACPI_EN) {
567 pci_read_config_dword(dev, ICH_PMBASE, ®ion);
568 region &= PCI_BASE_ADDRESS_IO_MASK;
569 if (region >= PCIBIOS_MIN_IO)
570 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
571 "ICH6 ACPI/GPIO/TCO");
574 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
575 if (enable & ICH4_GPIO_EN) {
576 pci_read_config_dword(dev, ICH6_GPIOBASE, ®ion);
577 region &= PCI_BASE_ADDRESS_IO_MASK;
578 if (region >= PCIBIOS_MIN_IO)
579 quirk_io_region(dev, region, 64,
580 PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO");
584 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
589 pci_read_config_dword(dev, reg, &val);
597 * This is not correct. It is 16, 32 or 64 bytes depending on
598 * register D31:F0:ADh bits 5:4.
600 * But this gets us at least _part_ of it.
608 /* Just print it out for now. We should reserve it after more debugging */
609 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
612 static void __devinit quirk_ich6_lpc(struct pci_dev *dev)
614 /* Shared ACPI/GPIO decode with all ICH6+ */
615 ich6_lpc_acpi_gpio(dev);
617 /* ICH6-specific generic IO decode */
618 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
619 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
621 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
622 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
624 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
629 pci_read_config_dword(dev, reg, &val);
636 * IO base in bits 15:2, mask in bits 23:18, both
640 mask = (val >> 16) & 0xfc;
643 /* Just print it out for now. We should reserve it after more debugging */
644 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
647 /* ICH7-10 has the same common LPC generic IO decode registers */
648 static void __devinit quirk_ich7_lpc(struct pci_dev *dev)
650 /* We share the common ACPI/DPIO decode with ICH6 */
651 ich6_lpc_acpi_gpio(dev);
653 /* And have 4 ICH7+ generic decodes */
654 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
655 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
656 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
657 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
659 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
660 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
661 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
662 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
663 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
664 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
665 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
666 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
667 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
668 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
669 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
670 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
671 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
674 * VIA ACPI: One IO region pointed to by longword at
675 * 0x48 or 0x20 (256 bytes of ACPI registers)
677 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
681 if (dev->revision & 0x10) {
682 pci_read_config_dword(dev, 0x48, ®ion);
683 region &= PCI_BASE_ADDRESS_IO_MASK;
684 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
687 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
690 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
691 * 0x48 (256 bytes of ACPI registers)
692 * 0x70 (128 bytes of hardware monitoring register)
693 * 0x90 (16 bytes of SMB registers)
695 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
700 quirk_vt82c586_acpi(dev);
702 pci_read_config_word(dev, 0x70, &hm);
703 hm &= PCI_BASE_ADDRESS_IO_MASK;
704 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
706 pci_read_config_dword(dev, 0x90, &smb);
707 smb &= PCI_BASE_ADDRESS_IO_MASK;
708 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
710 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
713 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
714 * 0x88 (128 bytes of power management registers)
715 * 0xd0 (16 bytes of SMB registers)
717 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
721 pci_read_config_word(dev, 0x88, &pm);
722 pm &= PCI_BASE_ADDRESS_IO_MASK;
723 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
725 pci_read_config_word(dev, 0xd0, &smb);
726 smb &= PCI_BASE_ADDRESS_IO_MASK;
727 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
729 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
732 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
733 * Disable fast back-to-back on the secondary bus segment
735 static void __devinit quirk_xio2000a(struct pci_dev *dev)
737 struct pci_dev *pdev;
740 dev_warn(&dev->dev, "TI XIO2000a quirk detected; "
741 "secondary bus fast back-to-back transfers disabled\n");
742 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
743 pci_read_config_word(pdev, PCI_COMMAND, &command);
744 if (command & PCI_COMMAND_FAST_BACK)
745 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
751 #ifdef CONFIG_X86_IO_APIC
753 #include <asm/io_apic.h>
756 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
757 * devices to the external APIC.
759 * TODO: When we have device-specific interrupt routers,
760 * this code will go away from quirks.
762 static void quirk_via_ioapic(struct pci_dev *dev)
767 tmp = 0; /* nothing routed to external APIC */
769 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
771 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
772 tmp == 0 ? "Disa" : "Ena");
774 /* Offset 0x58: External APIC IRQ output control */
775 pci_write_config_byte (dev, 0x58, tmp);
777 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
778 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
781 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
782 * This leads to doubled level interrupt rates.
783 * Set this bit to get rid of cycle wastage.
784 * Otherwise uncritical.
786 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
789 #define BYPASS_APIC_DEASSERT 8
791 pci_read_config_byte(dev, 0x5B, &misc_control2);
792 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
793 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
794 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
797 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
798 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
801 * The AMD io apic can hang the box when an apic irq is masked.
802 * We check all revs >= B0 (yet not in the pre production!) as the bug
803 * is currently marked NoFix
805 * We have multiple reports of hangs with this chipset that went away with
806 * noapic specified. For the moment we assume it's the erratum. We may be wrong
807 * of course. However the advice is demonstrably good even if so..
809 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
811 if (dev->revision >= 0x02) {
812 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
813 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
816 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
818 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
820 if (dev->devfn == 0 && dev->bus->number == 0)
823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
824 #endif /* CONFIG_X86_IO_APIC */
827 * Some settings of MMRBC can lead to data corruption so block changes.
828 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
830 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
832 if (dev->subordinate && dev->revision <= 0x12) {
833 dev_info(&dev->dev, "AMD8131 rev %x detected; "
834 "disabling PCI-X MMRBC\n", dev->revision);
835 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
838 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
841 * FIXME: it is questionable that quirk_via_acpi
842 * is needed. It shows up as an ISA bridge, and does not
843 * support the PCI_INTERRUPT_LINE register at all. Therefore
844 * it seems like setting the pci_dev's 'irq' to the
845 * value of the ACPI SCI interrupt is only done for convenience.
848 static void __devinit quirk_via_acpi(struct pci_dev *d)
851 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
854 pci_read_config_byte(d, 0x42, &irq);
856 if (irq && (irq != 2))
859 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
860 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
864 * VIA bridges which have VLink
867 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
869 static void quirk_via_bridge(struct pci_dev *dev)
871 /* See what bridge we have and find the device ranges */
872 switch (dev->device) {
873 case PCI_DEVICE_ID_VIA_82C686:
874 /* The VT82C686 is special, it attaches to PCI and can have
875 any device number. All its subdevices are functions of
876 that single device. */
877 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
878 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
880 case PCI_DEVICE_ID_VIA_8237:
881 case PCI_DEVICE_ID_VIA_8237A:
882 via_vlink_dev_lo = 15;
884 case PCI_DEVICE_ID_VIA_8235:
885 via_vlink_dev_lo = 16;
887 case PCI_DEVICE_ID_VIA_8231:
888 case PCI_DEVICE_ID_VIA_8233_0:
889 case PCI_DEVICE_ID_VIA_8233A:
890 case PCI_DEVICE_ID_VIA_8233C_0:
891 via_vlink_dev_lo = 17;
895 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
896 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
897 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
898 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
899 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
900 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
901 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
902 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
905 * quirk_via_vlink - VIA VLink IRQ number update
908 * If the device we are dealing with is on a PIC IRQ we need to
909 * ensure that the IRQ line register which usually is not relevant
910 * for PCI cards, is actually written so that interrupts get sent
911 * to the right place.
912 * We only do this on systems where a VIA south bridge was detected,
913 * and only for VIA devices on the motherboard (see quirk_via_bridge
917 static void quirk_via_vlink(struct pci_dev *dev)
921 /* Check if we have VLink at all */
922 if (via_vlink_dev_lo == -1)
927 /* Don't quirk interrupts outside the legacy IRQ range */
928 if (!new_irq || new_irq > 15)
931 /* Internal device ? */
932 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
933 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
936 /* This is an internal VLink device on a PIC interrupt. The BIOS
937 ought to have set this but may not have, so we redo it */
939 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
940 if (new_irq != irq) {
941 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
943 udelay(15); /* unknown if delay really needed */
944 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
947 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
950 * VIA VT82C598 has its device ID settable and many BIOSes
951 * set it to the ID of VT82C597 for backward compatibility.
952 * We need to switch it off to be able to recognize the real
955 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
957 pci_write_config_byte(dev, 0xfc, 0);
958 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
960 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
963 * CardBus controllers have a legacy base address that enables them
964 * to respond as i82365 pcmcia controllers. We don't want them to
965 * do this even if the Linux CardBus driver is not loaded, because
966 * the Linux i82365 driver does not (and should not) handle CardBus.
968 static void quirk_cardbus_legacy(struct pci_dev *dev)
970 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
972 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
974 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
975 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
978 * Following the PCI ordering rules is optional on the AMD762. I'm not
979 * sure what the designers were smoking but let's not inhale...
981 * To be fair to AMD, it follows the spec by default, its BIOS people
984 static void quirk_amd_ordering(struct pci_dev *dev)
987 pci_read_config_dword(dev, 0x4C, &pcic);
990 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
991 pci_write_config_dword(dev, 0x4C, pcic);
992 pci_read_config_dword(dev, 0x84, &pcic);
993 pcic |= (1<<23); /* Required in this mode */
994 pci_write_config_dword(dev, 0x84, pcic);
997 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
998 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1001 * DreamWorks provided workaround for Dunord I-3000 problem
1003 * This card decodes and responds to addresses not apparently
1004 * assigned to it. We force a larger allocation to ensure that
1005 * nothing gets put too close to it.
1007 static void __devinit quirk_dunord ( struct pci_dev * dev )
1009 struct resource *r = &dev->resource [1];
1013 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1016 * i82380FB mobile docking controller: its PCI-to-PCI bridge
1017 * is subtractive decoding (transparent), and does indicate this
1018 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
1021 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
1023 dev->transparent = 1;
1025 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1026 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1029 * Common misconfiguration of the MediaGX/Geode PCI master that will
1030 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
1031 * datasheets found at http://www.national.com/ds/GX for info on what
1032 * these bits do. <christer@weinigel.se>
1034 static void quirk_mediagx_master(struct pci_dev *dev)
1037 pci_read_config_byte(dev, 0x41, ®);
1040 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
1041 pci_write_config_byte(dev, 0x41, reg);
1044 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1045 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1048 * Ensure C0 rev restreaming is off. This is normally done by
1049 * the BIOS but in the odd case it is not the results are corruption
1050 * hence the presence of a Linux check
1052 static void quirk_disable_pxb(struct pci_dev *pdev)
1056 if (pdev->revision != 0x04) /* Only C0 requires this */
1058 pci_read_config_word(pdev, 0x40, &config);
1059 if (config & (1<<6)) {
1061 pci_write_config_word(pdev, 0x40, config);
1062 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
1065 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1066 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1068 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
1070 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1073 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1075 pci_read_config_byte(pdev, 0x40, &tmp);
1076 pci_write_config_byte(pdev, 0x40, tmp|1);
1077 pci_write_config_byte(pdev, 0x9, 1);
1078 pci_write_config_byte(pdev, 0xa, 6);
1079 pci_write_config_byte(pdev, 0x40, tmp);
1081 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1082 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1085 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1086 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1087 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1088 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1089 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1090 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1093 * Serverworks CSB5 IDE does not fully support native mode
1095 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
1098 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1102 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1103 /* PCI layer will sort out resources */
1106 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1109 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1111 static void __init quirk_ide_samemode(struct pci_dev *pdev)
1115 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1117 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1118 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1121 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1124 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1127 * Some ATA devices break if put into D3
1130 static void __devinit quirk_no_ata_d3(struct pci_dev *pdev)
1132 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1133 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE)
1134 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1136 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3);
1137 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3);
1138 /* ALi loses some register settings that we cannot then restore */
1139 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, quirk_no_ata_d3);
1140 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1141 occur when mode detecting */
1142 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3);
1144 /* This was originally an Alpha specific thing, but it really fits here.
1145 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1147 static void __init quirk_eisa_bridge(struct pci_dev *dev)
1149 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1151 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1155 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1156 * is not activated. The myth is that Asus said that they do not want the
1157 * users to be irritated by just another PCI Device in the Win98 device
1158 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1159 * package 2.7.0 for details)
1161 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1162 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1163 * becomes necessary to do this tweak in two steps -- the chosen trigger
1164 * is either the Host bridge (preferred) or on-board VGA controller.
1166 * Note that we used to unhide the SMBus that way on Toshiba laptops
1167 * (Satellite A40 and Tecra M2) but then found that the thermal management
1168 * was done by SMM code, which could cause unsynchronized concurrent
1169 * accesses to the SMBus registers, with potentially bad effects. Thus you
1170 * should be very careful when adding new entries: if SMM is accessing the
1171 * Intel SMBus, this is a very good reason to leave it hidden.
1173 * Likewise, many recent laptops use ACPI for thermal management. If the
1174 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1175 * natively, and keeping the SMBus hidden is the right thing to do. If you
1176 * are about to add an entry in the table below, please first disassemble
1177 * the DSDT and double-check that there is no code accessing the SMBus.
1179 static int asus_hides_smbus;
1181 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
1183 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1184 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1185 switch(dev->subsystem_device) {
1186 case 0x8025: /* P4B-LX */
1187 case 0x8070: /* P4B */
1188 case 0x8088: /* P4B533 */
1189 case 0x1626: /* L3C notebook */
1190 asus_hides_smbus = 1;
1192 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1193 switch(dev->subsystem_device) {
1194 case 0x80b1: /* P4GE-V */
1195 case 0x80b2: /* P4PE */
1196 case 0x8093: /* P4B533-V */
1197 asus_hides_smbus = 1;
1199 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1200 switch(dev->subsystem_device) {
1201 case 0x8030: /* P4T533 */
1202 asus_hides_smbus = 1;
1204 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1205 switch (dev->subsystem_device) {
1206 case 0x8070: /* P4G8X Deluxe */
1207 asus_hides_smbus = 1;
1209 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1210 switch (dev->subsystem_device) {
1211 case 0x80c9: /* PU-DLS */
1212 asus_hides_smbus = 1;
1214 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1215 switch (dev->subsystem_device) {
1216 case 0x1751: /* M2N notebook */
1217 case 0x1821: /* M5N notebook */
1218 case 0x1897: /* A6L notebook */
1219 asus_hides_smbus = 1;
1221 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1222 switch (dev->subsystem_device) {
1223 case 0x184b: /* W1N notebook */
1224 case 0x186a: /* M6Ne notebook */
1225 asus_hides_smbus = 1;
1227 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1228 switch (dev->subsystem_device) {
1229 case 0x80f2: /* P4P800-X */
1230 asus_hides_smbus = 1;
1232 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1233 switch (dev->subsystem_device) {
1234 case 0x1882: /* M6V notebook */
1235 case 0x1977: /* A6VA notebook */
1236 asus_hides_smbus = 1;
1238 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1239 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1240 switch(dev->subsystem_device) {
1241 case 0x088C: /* HP Compaq nc8000 */
1242 case 0x0890: /* HP Compaq nc6000 */
1243 asus_hides_smbus = 1;
1245 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1246 switch (dev->subsystem_device) {
1247 case 0x12bc: /* HP D330L */
1248 case 0x12bd: /* HP D530 */
1249 case 0x006a: /* HP Compaq nx9500 */
1250 asus_hides_smbus = 1;
1252 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1253 switch (dev->subsystem_device) {
1254 case 0x12bf: /* HP xw4100 */
1255 asus_hides_smbus = 1;
1257 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1258 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1259 switch(dev->subsystem_device) {
1260 case 0xC00C: /* Samsung P35 notebook */
1261 asus_hides_smbus = 1;
1263 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1264 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1265 switch(dev->subsystem_device) {
1266 case 0x0058: /* Compaq Evo N620c */
1267 asus_hides_smbus = 1;
1269 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1270 switch(dev->subsystem_device) {
1271 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1272 /* Motherboard doesn't have Host bridge
1273 * subvendor/subdevice IDs, therefore checking
1274 * its on-board VGA controller */
1275 asus_hides_smbus = 1;
1277 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1278 switch(dev->subsystem_device) {
1279 case 0x00b8: /* Compaq Evo D510 CMT */
1280 case 0x00b9: /* Compaq Evo D510 SFF */
1281 case 0x00ba: /* Compaq Evo D510 USDT */
1282 /* Motherboard doesn't have Host bridge
1283 * subvendor/subdevice IDs and on-board VGA
1284 * controller is disabled if an AGP card is
1285 * inserted, therefore checking USB UHCI
1287 asus_hides_smbus = 1;
1289 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1290 switch (dev->subsystem_device) {
1291 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1292 /* Motherboard doesn't have host bridge
1293 * subvendor/subdevice IDs, therefore checking
1294 * its on-board VGA controller */
1295 asus_hides_smbus = 1;
1299 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1300 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1302 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1304 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1305 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1306 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1307 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1308 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1310 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1311 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1312 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1314 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1318 if (likely(!asus_hides_smbus))
1321 pci_read_config_word(dev, 0xF2, &val);
1323 pci_write_config_word(dev, 0xF2, val & (~0x8));
1324 pci_read_config_word(dev, 0xF2, &val);
1326 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1328 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1338 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1339 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1340 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1341 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1342 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1343 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1344 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1346 /* It appears we just have one such device. If not, we have a warning */
1347 static void __iomem *asus_rcba_base;
1348 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1352 if (likely(!asus_hides_smbus))
1354 WARN_ON(asus_rcba_base);
1356 pci_read_config_dword(dev, 0xF0, &rcba);
1357 /* use bits 31:14, 16 kB aligned */
1358 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1359 if (asus_rcba_base == NULL)
1363 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1367 if (likely(!asus_hides_smbus || !asus_rcba_base))
1369 /* read the Function Disable register, dword mode only */
1370 val = readl(asus_rcba_base + 0x3418);
1371 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1374 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1376 if (likely(!asus_hides_smbus || !asus_rcba_base))
1378 iounmap(asus_rcba_base);
1379 asus_rcba_base = NULL;
1380 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1383 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1385 asus_hides_smbus_lpc_ich6_suspend(dev);
1386 asus_hides_smbus_lpc_ich6_resume_early(dev);
1387 asus_hides_smbus_lpc_ich6_resume(dev);
1389 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1390 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1391 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1392 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1395 * SiS 96x south bridge: BIOS typically hides SMBus device...
1397 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1400 pci_read_config_byte(dev, 0x77, &val);
1402 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1403 pci_write_config_byte(dev, 0x77, val & ~0x10);
1406 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1407 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1408 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1409 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1410 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1411 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1412 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1413 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1416 * ... This is further complicated by the fact that some SiS96x south
1417 * bridges pretend to be 85C503/5513 instead. In that case see if we
1418 * spotted a compatible north bridge to make sure.
1419 * (pci_find_device doesn't work yet)
1421 * We can also enable the sis96x bit in the discovery register..
1423 #define SIS_DETECT_REGISTER 0x40
1425 static void quirk_sis_503(struct pci_dev *dev)
1430 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1431 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1432 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1433 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1434 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1439 * Ok, it now shows up as a 96x.. run the 96x quirk by
1440 * hand in case it has already been processed.
1441 * (depends on link order, which is apparently not guaranteed)
1443 dev->device = devid;
1444 quirk_sis_96x_smbus(dev);
1446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1447 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1451 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1452 * and MC97 modem controller are disabled when a second PCI soundcard is
1453 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1456 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1459 int asus_hides_ac97 = 0;
1461 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1462 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1463 asus_hides_ac97 = 1;
1466 if (!asus_hides_ac97)
1469 pci_read_config_byte(dev, 0x50, &val);
1471 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1472 pci_read_config_byte(dev, 0x50, &val);
1474 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1476 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1479 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1480 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1482 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1485 * If we are using libata we can drive this chip properly but must
1486 * do this early on to make the additional device appear during
1489 static void quirk_jmicron_ata(struct pci_dev *pdev)
1491 u32 conf1, conf5, class;
1494 /* Only poke fn 0 */
1495 if (PCI_FUNC(pdev->devfn))
1498 pci_read_config_dword(pdev, 0x40, &conf1);
1499 pci_read_config_dword(pdev, 0x80, &conf5);
1501 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1502 conf5 &= ~(1 << 24); /* Clear bit 24 */
1504 switch (pdev->device) {
1505 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1506 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1507 /* The controller should be in single function ahci mode */
1508 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1511 case PCI_DEVICE_ID_JMICRON_JMB365:
1512 case PCI_DEVICE_ID_JMICRON_JMB366:
1513 /* Redirect IDE second PATA port to the right spot */
1516 case PCI_DEVICE_ID_JMICRON_JMB361:
1517 case PCI_DEVICE_ID_JMICRON_JMB363:
1518 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1519 /* Set the class codes correctly and then direct IDE 0 */
1520 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1523 case PCI_DEVICE_ID_JMICRON_JMB368:
1524 /* The controller should be in single function IDE mode */
1525 conf1 |= 0x00C00000; /* Set 22, 23 */
1529 pci_write_config_dword(pdev, 0x40, conf1);
1530 pci_write_config_dword(pdev, 0x80, conf5);
1532 /* Update pdev accordingly */
1533 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1534 pdev->hdr_type = hdr & 0x7f;
1535 pdev->multifunction = !!(hdr & 0x80);
1537 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1538 pdev->class = class >> 8;
1540 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1541 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1542 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1543 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1544 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1545 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1546 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1547 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1548 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1549 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1550 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1551 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1552 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1553 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1557 #ifdef CONFIG_X86_IO_APIC
1558 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1562 if ((pdev->class >> 8) != 0xff00)
1565 /* the first BAR is the location of the IO APIC...we must
1566 * not touch this (and it's already covered by the fixmap), so
1567 * forcibly insert it into the resource tree */
1568 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1569 insert_resource(&iomem_resource, &pdev->resource[0]);
1571 /* The next five BARs all seem to be rubbish, so just clean
1573 for (i=1; i < 6; i++) {
1574 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1578 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1581 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1586 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1587 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1588 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1592 * It's possible for the MSI to get corrupted if shpc and acpi
1593 * are used together on certain PXH-based systems.
1595 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1599 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1601 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1602 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1603 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1604 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1605 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1608 * Some Intel PCI Express chipsets have trouble with downstream
1609 * device power management.
1611 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1613 pci_pm_d3_delay = 120;
1617 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1619 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1621 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1622 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1623 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1625 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1626 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1628 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1629 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1630 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1631 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1632 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1633 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1634 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1635 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1636 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1637 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1639 #ifdef CONFIG_X86_IO_APIC
1641 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1642 * remap the original interrupt in the linux kernel to the boot interrupt, so
1643 * that a PCI device's interrupt handler is installed on the boot interrupt
1646 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1648 if (noioapicquirk || noioapicreroute)
1651 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1652 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1653 dev->vendor, dev->device);
1655 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1656 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1657 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1658 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1659 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1660 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1661 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1662 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1663 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1664 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1665 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1666 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1667 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1668 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1669 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1670 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1673 * On some chipsets we can disable the generation of legacy INTx boot
1678 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1679 * 300641-004US, section 5.7.3.
1681 #define INTEL_6300_IOAPIC_ABAR 0x40
1682 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1684 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1686 u16 pci_config_word;
1691 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1692 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1693 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1695 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1696 dev->vendor, dev->device);
1698 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1699 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1702 * disable boot interrupts on HT-1000
1704 #define BC_HT1000_FEATURE_REG 0x64
1705 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1706 #define BC_HT1000_MAP_IDX 0xC00
1707 #define BC_HT1000_MAP_DATA 0xC01
1709 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1711 u32 pci_config_dword;
1717 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1718 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1719 BC_HT1000_PIC_REGS_ENABLE);
1721 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1722 outb(irq, BC_HT1000_MAP_IDX);
1723 outb(0x00, BC_HT1000_MAP_DATA);
1726 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1728 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1729 dev->vendor, dev->device);
1731 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1732 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1735 * disable boot interrupts on AMD and ATI chipsets
1738 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1739 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1740 * (due to an erratum).
1742 #define AMD_813X_MISC 0x40
1743 #define AMD_813X_NOIOAMODE (1<<0)
1744 #define AMD_813X_REV_B1 0x12
1745 #define AMD_813X_REV_B2 0x13
1747 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1749 u32 pci_config_dword;
1753 if ((dev->revision == AMD_813X_REV_B1) ||
1754 (dev->revision == AMD_813X_REV_B2))
1757 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1758 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1759 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1761 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1762 dev->vendor, dev->device);
1764 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1765 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1766 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1767 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1769 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1771 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1773 u16 pci_config_word;
1778 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1779 if (!pci_config_word) {
1780 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] "
1781 "already disabled\n", dev->vendor, dev->device);
1784 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1785 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1786 dev->vendor, dev->device);
1788 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1789 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1790 #endif /* CONFIG_X86_IO_APIC */
1793 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1794 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1795 * Re-allocate the region if needed...
1797 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1799 struct resource *r = &dev->resource[0];
1801 if (r->start & 0x8) {
1806 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1807 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1808 quirk_tc86c001_ide);
1810 static void __devinit quirk_netmos(struct pci_dev *dev)
1812 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1813 unsigned int num_serial = dev->subsystem_device & 0xf;
1816 * These Netmos parts are multiport serial devices with optional
1817 * parallel ports. Even when parallel ports are present, they
1818 * are identified as class SERIAL, which means the serial driver
1819 * will claim them. To prevent this, mark them as class OTHER.
1820 * These combo devices should be claimed by parport_serial.
1822 * The subdevice ID is of the form 0x00PS, where <P> is the number
1823 * of parallel ports and <S> is the number of serial ports.
1825 switch (dev->device) {
1826 case PCI_DEVICE_ID_NETMOS_9835:
1827 /* Well, this rule doesn't hold for the following 9835 device */
1828 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1829 dev->subsystem_device == 0x0299)
1831 case PCI_DEVICE_ID_NETMOS_9735:
1832 case PCI_DEVICE_ID_NETMOS_9745:
1833 case PCI_DEVICE_ID_NETMOS_9845:
1834 case PCI_DEVICE_ID_NETMOS_9855:
1835 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1837 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1838 "%u serial); changing class SERIAL to OTHER "
1839 "(use parport_serial)\n",
1840 dev->device, num_parallel, num_serial);
1841 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1842 (dev->class & 0xff);
1846 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1848 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1855 switch (dev->device) {
1856 /* PCI IDs taken from drivers/net/e100.c */
1858 case 0x1030 ... 0x1034:
1859 case 0x1038 ... 0x103E:
1860 case 0x1050 ... 0x1057:
1862 case 0x1064 ... 0x106B:
1863 case 0x1091 ... 0x1095:
1876 * Some firmware hands off the e100 with interrupts enabled,
1877 * which can cause a flood of interrupts if packets are
1878 * received before the driver attaches to the device. So
1879 * disable all e100 interrupts here. The driver will
1880 * re-enable them when it's ready.
1882 pci_read_config_word(dev, PCI_COMMAND, &command);
1884 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1888 * Check that the device is in the D0 power state. If it's not,
1889 * there is no point to look any further.
1891 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1893 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1894 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1898 /* Convert from PCI bus to resource space. */
1899 csr = ioremap(pci_resource_start(dev, 0), 8);
1901 dev_warn(&dev->dev, "Can't map e100 registers\n");
1905 cmd_hi = readb(csr + 3);
1907 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1914 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1917 * The 82575 and 82598 may experience data corruption issues when transitioning
1918 * out of L0S. To prevent this we need to disable L0S on the pci-e link
1920 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev)
1922 dev_info(&dev->dev, "Disabling L0s\n");
1923 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1925 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1926 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1927 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1928 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1929 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1930 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1931 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1932 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1933 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1934 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1935 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1936 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1937 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1938 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1940 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1942 /* rev 1 ncr53c810 chips don't set the class at all which means
1943 * they don't get their resources remapped. Fix that here.
1946 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1947 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1948 dev->class = PCI_CLASS_STORAGE_SCSI;
1951 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1953 /* Enable 1k I/O space granularity on the Intel P64H2 */
1954 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1957 u8 io_base_lo, io_limit_lo;
1958 unsigned long base, limit;
1959 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1961 pci_read_config_word(dev, 0x40, &en1k);
1964 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1966 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1967 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1968 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1969 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1971 if (base <= limit) {
1973 res->end = limit + 0x3ff;
1977 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1979 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1980 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1981 * in drivers/pci/setup-bus.c
1983 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1985 u16 en1k, iobl_adr, iobl_adr_1k;
1986 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1988 pci_read_config_word(dev, 0x40, &en1k);
1991 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1993 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1995 if (iobl_adr != iobl_adr_1k) {
1996 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
1997 iobl_adr,iobl_adr_1k);
1998 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
2002 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
2004 /* Under some circumstances, AER is not linked with extended capabilities.
2005 * Force it to be linked by setting the corresponding control bit in the
2008 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2011 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2013 pci_write_config_byte(dev, 0xf41, b | 0x20);
2015 "Linking AER extended capability\n");
2019 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2020 quirk_nvidia_ck804_pcie_aer_ext_cap);
2021 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2022 quirk_nvidia_ck804_pcie_aer_ext_cap);
2024 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2027 * Disable PCI Bus Parking and PCI Master read caching on CX700
2028 * which causes unspecified timing errors with a VT6212L on the PCI
2029 * bus leading to USB2.0 packet loss.
2031 * This quirk is only enabled if a second (on the external PCI bus)
2032 * VT6212L is found -- the CX700 core itself also contains a USB
2033 * host controller with the same PCI ID as the VT6212L.
2036 /* Count VT6212L instances */
2037 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2038 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2041 /* p should contain the first (internal) VT6212L -- see if we have
2042 an external one by searching again */
2043 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2048 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2050 /* Turn off PCI Bus Parking */
2051 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2054 "Disabling VIA CX700 PCI parking\n");
2058 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2060 /* Turn off PCI Master read caching */
2061 pci_write_config_byte(dev, 0x72, 0x0);
2063 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2064 pci_write_config_byte(dev, 0x75, 0x1);
2066 /* Disable "Read FIFO Timer" */
2067 pci_write_config_byte(dev, 0x77, 0x0);
2070 "Disabling VIA CX700 PCI caching\n");
2074 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2077 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2078 * VPD end tag will hang the device. This problem was initially
2079 * observed when a vpd entry was created in sysfs
2080 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2081 * will dump 32k of data. Reading a full 32k will cause an access
2082 * beyond the VPD end tag causing the device to hang. Once the device
2083 * is hung, the bnx2 driver will not be able to reset the device.
2084 * We believe that it is legal to read beyond the end tag and
2085 * therefore the solution is to limit the read/write length.
2087 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
2090 * Only disable the VPD capability for 5706, 5706S, 5708,
2091 * 5708S and 5709 rev. A
2093 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
2094 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
2095 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
2096 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
2097 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2098 (dev->revision & 0xf0) == 0x0)) {
2100 dev->vpd->len = 0x80;
2104 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2105 PCI_DEVICE_ID_NX2_5706,
2106 quirk_brcm_570x_limit_vpd);
2107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2108 PCI_DEVICE_ID_NX2_5706S,
2109 quirk_brcm_570x_limit_vpd);
2110 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2111 PCI_DEVICE_ID_NX2_5708,
2112 quirk_brcm_570x_limit_vpd);
2113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2114 PCI_DEVICE_ID_NX2_5708S,
2115 quirk_brcm_570x_limit_vpd);
2116 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2117 PCI_DEVICE_ID_NX2_5709,
2118 quirk_brcm_570x_limit_vpd);
2119 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2120 PCI_DEVICE_ID_NX2_5709S,
2121 quirk_brcm_570x_limit_vpd);
2123 /* Originally in EDAC sources for i82875P:
2124 * Intel tells BIOS developers to hide device 6 which
2125 * configures the overflow device access containing
2126 * the DRBs - this is where we expose device 6.
2127 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2129 static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev)
2133 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2134 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2135 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2139 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2140 quirk_unhide_mch_dev6);
2141 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2142 quirk_unhide_mch_dev6);
2145 #ifdef CONFIG_PCI_MSI
2146 /* Some chipsets do not support MSI. We cannot easily rely on setting
2147 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2148 * some other busses controlled by the chipset even if Linux is not
2149 * aware of it. Instead of setting the flag on all busses in the
2150 * machine, simply disable MSI globally.
2152 static void __init quirk_disable_all_msi(struct pci_dev *dev)
2155 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2158 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2165 /* Disable MSI on chipsets that are known to not support it */
2166 static void __devinit quirk_disable_msi(struct pci_dev *dev)
2168 if (dev->subordinate) {
2169 dev_warn(&dev->dev, "MSI quirk detected; "
2170 "subordinate MSI disabled\n");
2171 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2174 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2175 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9602, quirk_disable_msi);
2176 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASUSTEK, 0x9602, quirk_disable_msi);
2177 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AI, 0x9602, quirk_disable_msi);
2178 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2179 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2181 /* Go through the list of Hypertransport capabilities and
2182 * return 1 if a HT MSI capability is found and enabled */
2183 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
2187 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2188 while (pos && ttl--) {
2191 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2194 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2195 flags & HT_MSI_FLAGS_ENABLE ?
2196 "enabled" : "disabled");
2197 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2200 pos = pci_find_next_ht_capability(dev, pos,
2201 HT_CAPTYPE_MSI_MAPPING);
2206 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2207 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
2209 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2210 dev_warn(&dev->dev, "MSI quirk detected; "
2211 "subordinate MSI disabled\n");
2212 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2218 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2219 * MSI are supported if the MSI capability set in any of these mappings.
2221 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2223 struct pci_dev *pdev;
2225 if (!dev->subordinate)
2228 /* check HT MSI cap on this chipset and the root one.
2229 * a single one having MSI is enough to be sure that MSI are supported.
2231 pdev = pci_get_slot(dev->bus, 0);
2234 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2235 dev_warn(&dev->dev, "MSI quirk detected; "
2236 "subordinate MSI disabled\n");
2237 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2242 quirk_nvidia_ck804_msi_ht_cap);
2244 /* Force enable MSI mapping capability on HT bridges */
2245 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
2249 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2250 while (pos && ttl--) {
2253 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2255 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2257 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2258 flags | HT_MSI_FLAGS_ENABLE);
2260 pos = pci_find_next_ht_capability(dev, pos,
2261 HT_CAPTYPE_MSI_MAPPING);
2264 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2265 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2266 ht_enable_msi_mapping);
2268 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2269 ht_enable_msi_mapping);
2271 /* The P5N32-SLI motherboards from Asus have a problem with msi
2272 * for the MCP55 NIC. It is not yet determined whether the msi problem
2273 * also affects other devices. As for now, turn off msi for this device.
2275 static void __devinit nvenet_msi_disable(struct pci_dev *dev)
2277 if (dmi_name_in_vendors("P5N32-SLI PREMIUM") ||
2278 dmi_name_in_vendors("P5N32-E SLI")) {
2280 "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2284 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2285 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2286 nvenet_msi_disable);
2288 static int __devinit ht_check_msi_mapping(struct pci_dev *dev)
2293 /* check if there is HT MSI cap or enabled on this device */
2294 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2295 while (pos && ttl--) {
2300 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2302 if (flags & HT_MSI_FLAGS_ENABLE) {
2309 pos = pci_find_next_ht_capability(dev, pos,
2310 HT_CAPTYPE_MSI_MAPPING);
2316 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge)
2318 struct pci_dev *dev;
2323 dev_no = host_bridge->devfn >> 3;
2324 for (i = dev_no + 1; i < 0x20; i++) {
2325 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2329 /* found next host bridge ?*/
2330 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2336 if (ht_check_msi_mapping(dev)) {
2347 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2348 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2350 static int __devinit is_end_of_ht_chain(struct pci_dev *dev)
2356 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2361 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2363 ctrl_off = ((flags >> 10) & 1) ?
2364 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2365 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2367 if (ctrl & (1 << 6))
2374 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev)
2376 struct pci_dev *host_bridge;
2381 dev_no = dev->devfn >> 3;
2382 for (i = dev_no; i >= 0; i--) {
2383 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2387 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2392 pci_dev_put(host_bridge);
2398 /* don't enable end_device/host_bridge with leaf directly here */
2399 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2400 host_bridge_with_leaf(host_bridge))
2403 /* root did that ! */
2404 if (msi_ht_cap_enabled(host_bridge))
2407 ht_enable_msi_mapping(dev);
2410 pci_dev_put(host_bridge);
2413 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev)
2417 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2418 while (pos && ttl--) {
2421 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2423 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2425 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2426 flags & ~HT_MSI_FLAGS_ENABLE);
2428 pos = pci_find_next_ht_capability(dev, pos,
2429 HT_CAPTYPE_MSI_MAPPING);
2433 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2435 struct pci_dev *host_bridge;
2439 if (!pci_msi_enabled())
2442 /* check if there is HT MSI cap or enabled on this device */
2443 found = ht_check_msi_mapping(dev);
2450 * HT MSI mapping should be disabled on devices that are below
2451 * a non-Hypertransport host bridge. Locate the host bridge...
2453 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2454 if (host_bridge == NULL) {
2456 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2460 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2462 /* Host bridge is to HT */
2464 /* it is not enabled, try to enable it */
2466 ht_enable_msi_mapping(dev);
2468 nv_ht_enable_msi_mapping(dev);
2473 /* HT MSI is not enabled */
2477 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2478 ht_disable_msi_mapping(dev);
2481 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2483 return __nv_msi_ht_cap_quirk(dev, 1);
2486 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2488 return __nv_msi_ht_cap_quirk(dev, 0);
2491 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2492 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2494 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2495 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2497 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
2499 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2501 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2505 /* SB700 MSI issue will be fixed at HW level from revision A21,
2506 * we need check PCI REVISION ID of SMBus controller to get SB700
2509 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2514 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2515 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2518 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2519 PCI_DEVICE_ID_TIGON3_5780,
2520 quirk_msi_intx_disable_bug);
2521 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2522 PCI_DEVICE_ID_TIGON3_5780S,
2523 quirk_msi_intx_disable_bug);
2524 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2525 PCI_DEVICE_ID_TIGON3_5714,
2526 quirk_msi_intx_disable_bug);
2527 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2528 PCI_DEVICE_ID_TIGON3_5714S,
2529 quirk_msi_intx_disable_bug);
2530 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2531 PCI_DEVICE_ID_TIGON3_5715,
2532 quirk_msi_intx_disable_bug);
2533 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2534 PCI_DEVICE_ID_TIGON3_5715S,
2535 quirk_msi_intx_disable_bug);
2537 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2538 quirk_msi_intx_disable_ati_bug);
2539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2540 quirk_msi_intx_disable_ati_bug);
2541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2542 quirk_msi_intx_disable_ati_bug);
2543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2544 quirk_msi_intx_disable_ati_bug);
2545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2546 quirk_msi_intx_disable_ati_bug);
2548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2549 quirk_msi_intx_disable_bug);
2550 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2551 quirk_msi_intx_disable_bug);
2552 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2553 quirk_msi_intx_disable_bug);
2555 #endif /* CONFIG_PCI_MSI */
2557 #ifdef CONFIG_PCI_IOV
2560 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the
2561 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the
2562 * old Flash Memory Space.
2564 static void __devinit quirk_i82576_sriov(struct pci_dev *dev)
2567 u32 bar, start, size;
2569 if (PAGE_SIZE > 0x10000)
2572 flags = pci_resource_flags(dev, 0);
2573 if ((flags & PCI_BASE_ADDRESS_SPACE) !=
2574 PCI_BASE_ADDRESS_SPACE_MEMORY ||
2575 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) !=
2576 PCI_BASE_ADDRESS_MEM_TYPE_32)
2579 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
2583 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar);
2584 if (bar & PCI_BASE_ADDRESS_MEM_MASK)
2587 start = pci_resource_start(dev, 1);
2588 size = pci_resource_len(dev, 1);
2589 if (!start || size != 0x400000 || start & (size - 1))
2592 pci_resource_flags(dev, 1) = 0;
2593 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
2594 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start);
2595 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2);
2597 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n");
2599 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov);
2600 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov);
2601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov);
2602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov);
2603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov);
2604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150d, quirk_i82576_sriov);
2605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1518, quirk_i82576_sriov);
2607 #endif /* CONFIG_PCI_IOV */
2609 /* Allow manual resource allocation for PCI hotplug bridges
2610 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2611 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2612 * kernel fails to allocate resources when hotplug device is
2613 * inserted and PCI bus is rescanned.
2615 static void __devinit quirk_hotplug_bridge(struct pci_dev *dev)
2617 dev->is_hotplug_bridge = 1;
2620 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
2623 * This is a quirk for the Ricoh MMC controller found as a part of
2624 * some mulifunction chips.
2626 * This is very similiar and based on the ricoh_mmc driver written by
2627 * Philip Langdale. Thank you for these magic sequences.
2629 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2630 * and one or both of cardbus or firewire.
2632 * It happens that they implement SD and MMC
2633 * support as separate controllers (and PCI functions). The linux SDHCI
2634 * driver supports MMC cards but the chip detects MMC cards in hardware
2635 * and directs them to the MMC controller - so the SDHCI driver never sees
2638 * To get around this, we must disable the useless MMC controller.
2639 * At that point, the SDHCI controller will start seeing them
2640 * It seems to be the case that the relevant PCI registers to deactivate the
2641 * MMC controller live on PCI function 0, which might be the cardbus controller
2642 * or the firewire controller, depending on the particular chip in question
2644 * This has to be done early, because as soon as we disable the MMC controller
2645 * other pci functions shift up one level, e.g. function #2 becomes function
2646 * #1, and this will confuse the pci core.
2649 #ifdef CONFIG_MMC_RICOH_MMC
2650 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
2652 /* disable via cardbus interface */
2657 /* disable must be done via function #0 */
2658 if (PCI_FUNC(dev->devfn))
2661 pci_read_config_byte(dev, 0xB7, &disable);
2665 pci_read_config_byte(dev, 0x8E, &write_enable);
2666 pci_write_config_byte(dev, 0x8E, 0xAA);
2667 pci_read_config_byte(dev, 0x8D, &write_target);
2668 pci_write_config_byte(dev, 0x8D, 0xB7);
2669 pci_write_config_byte(dev, 0xB7, disable | 0x02);
2670 pci_write_config_byte(dev, 0x8E, write_enable);
2671 pci_write_config_byte(dev, 0x8D, write_target);
2673 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2674 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2676 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2677 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2679 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
2681 /* disable via firewire interface */
2685 /* disable must be done via function #0 */
2686 if (PCI_FUNC(dev->devfn))
2689 pci_read_config_byte(dev, 0xCB, &disable);
2694 pci_read_config_byte(dev, 0xCA, &write_enable);
2695 pci_write_config_byte(dev, 0xCA, 0x57);
2696 pci_write_config_byte(dev, 0xCB, disable | 0x02);
2697 pci_write_config_byte(dev, 0xCA, write_enable);
2699 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2700 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2702 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2703 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2704 #endif /*CONFIG_MMC_RICOH_MMC*/
2706 #if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP)
2707 #define VTUNCERRMSK_REG 0x1ac
2708 #define VTD_MSK_SPEC_ERRORS (1 << 31)
2710 * This is a quirk for masking vt-d spec defined errors to platform error
2711 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
2712 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
2713 * on the RAS config settings of the platform) when a vt-d fault happens.
2714 * The resulting SMI caused the system to hang.
2716 * VT-d spec related errors are already handled by the VT-d OS code, so no
2717 * need to report the same error through other channels.
2719 static void vtd_mask_spec_errors(struct pci_dev *dev)
2723 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
2724 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
2726 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
2727 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
2730 static void __devinit fixup_ti816x_class(struct pci_dev* dev)
2732 /* TI 816x devices do not have class code set when in PCIe boot mode */
2733 if (dev->class == PCI_CLASS_NOT_DEFINED) {
2734 dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n");
2735 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
2738 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_TI, 0xb800, fixup_ti816x_class);
2740 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2741 struct pci_fixup *end)
2744 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
2745 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
2746 dev_dbg(&dev->dev, "calling %pF\n", f->hook);
2753 extern struct pci_fixup __start_pci_fixups_early[];
2754 extern struct pci_fixup __end_pci_fixups_early[];
2755 extern struct pci_fixup __start_pci_fixups_header[];
2756 extern struct pci_fixup __end_pci_fixups_header[];
2757 extern struct pci_fixup __start_pci_fixups_final[];
2758 extern struct pci_fixup __end_pci_fixups_final[];
2759 extern struct pci_fixup __start_pci_fixups_enable[];
2760 extern struct pci_fixup __end_pci_fixups_enable[];
2761 extern struct pci_fixup __start_pci_fixups_resume[];
2762 extern struct pci_fixup __end_pci_fixups_resume[];
2763 extern struct pci_fixup __start_pci_fixups_resume_early[];
2764 extern struct pci_fixup __end_pci_fixups_resume_early[];
2765 extern struct pci_fixup __start_pci_fixups_suspend[];
2766 extern struct pci_fixup __end_pci_fixups_suspend[];
2769 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
2771 struct pci_fixup *start, *end;
2774 case pci_fixup_early:
2775 start = __start_pci_fixups_early;
2776 end = __end_pci_fixups_early;
2779 case pci_fixup_header:
2780 start = __start_pci_fixups_header;
2781 end = __end_pci_fixups_header;
2784 case pci_fixup_final:
2785 start = __start_pci_fixups_final;
2786 end = __end_pci_fixups_final;
2789 case pci_fixup_enable:
2790 start = __start_pci_fixups_enable;
2791 end = __end_pci_fixups_enable;
2794 case pci_fixup_resume:
2795 start = __start_pci_fixups_resume;
2796 end = __end_pci_fixups_resume;
2799 case pci_fixup_resume_early:
2800 start = __start_pci_fixups_resume_early;
2801 end = __end_pci_fixups_resume_early;
2804 case pci_fixup_suspend:
2805 start = __start_pci_fixups_suspend;
2806 end = __end_pci_fixups_suspend;
2810 /* stupid compiler warning, you would think with an enum... */
2813 pci_do_fixups(dev, start, end);
2815 EXPORT_SYMBOL(pci_fixup_device);
2817 static int __init pci_apply_final_quirks(void)
2819 struct pci_dev *dev = NULL;
2823 if (pci_cache_line_size)
2824 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
2825 pci_cache_line_size << 2);
2827 while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
2828 pci_fixup_device(pci_fixup_final, dev);
2830 * If arch hasn't set it explicitly yet, use the CLS
2831 * value shared by all PCI devices. If there's a
2832 * mismatch, fall back to the default value.
2834 if (!pci_cache_line_size) {
2835 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
2838 if (!tmp || cls == tmp)
2841 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), "
2842 "using %u bytes\n", cls << 2, tmp << 2,
2843 pci_dfl_cache_line_size << 2);
2844 pci_cache_line_size = pci_dfl_cache_line_size;
2847 if (!pci_cache_line_size) {
2848 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
2849 cls << 2, pci_dfl_cache_line_size << 2);
2850 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
2856 fs_initcall_sync(pci_apply_final_quirks);
2859 * Followings are device-specific reset methods which can be used to
2860 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
2863 static int reset_intel_generic_dev(struct pci_dev *dev, int probe)
2867 /* only implement PCI_CLASS_SERIAL_USB at present */
2868 if (dev->class == PCI_CLASS_SERIAL_USB) {
2869 pos = pci_find_capability(dev, PCI_CAP_ID_VNDR);
2876 pci_write_config_byte(dev, pos + 0x4, 1);
2885 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
2889 pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
2896 pci_write_config_word(dev, pos + PCI_EXP_DEVCTL,
2897 PCI_EXP_DEVCTL_BCR_FLR);
2903 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
2905 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
2906 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
2907 reset_intel_82599_sfp_virtfn },
2908 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2909 reset_intel_generic_dev },
2913 int pci_dev_specific_reset(struct pci_dev *dev, int probe)
2915 const struct pci_dev_reset_methods *i;
2917 for (i = pci_dev_reset_methods; i->reset; i++) {
2918 if ((i->vendor == dev->vendor ||
2919 i->vendor == (u16)PCI_ANY_ID) &&
2920 (i->device == dev->device ||
2921 i->device == (u16)PCI_ANY_ID))
2922 return i->reset(dev, probe);