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.
10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/export.h>
17 #include <linux/pci.h>
18 #include <linux/init.h>
19 #include <linux/delay.h>
20 #include <linux/acpi.h>
21 #include <linux/kallsyms.h>
22 #include <linux/dmi.h>
23 #include <linux/pci-aspm.h>
24 #include <linux/ioport.h>
25 #include <linux/sched.h>
26 #include <linux/ktime.h>
27 #include <asm/dma.h> /* isa_dma_bridge_buggy */
31 * Decoding should be disabled for a PCI device during BAR sizing to avoid
32 * conflict. But doing so may cause problems on host bridge and perhaps other
33 * key system devices. For devices that need to have mmio decoding always-on,
34 * we need to set the dev->mmio_always_on bit.
36 static void quirk_mmio_always_on(struct pci_dev *dev)
38 dev->mmio_always_on = 1;
40 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
41 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
43 /* The Mellanox Tavor device gives false positive parity errors
44 * Mark this device with a broken_parity_status, to allow
45 * PCI scanning code to "skip" this now blacklisted device.
47 static void quirk_mellanox_tavor(struct pci_dev *dev)
49 dev->broken_parity_status = 1; /* This device gives false positives */
51 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
52 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
54 /* Deal with broken BIOSes that neglect to enable passive release,
55 which can cause problems in combination with the 82441FX/PPro MTRRs */
56 static void quirk_passive_release(struct pci_dev *dev)
58 struct pci_dev *d = NULL;
61 /* We have to make sure a particular bit is set in the PIIX3
62 ISA bridge, so we have to go out and find it. */
63 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
64 pci_read_config_byte(d, 0x82, &dlc);
66 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
68 pci_write_config_byte(d, 0x82, dlc);
72 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
73 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
75 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
76 but VIA don't answer queries. If you happen to have good contacts at VIA
77 ask them for me please -- Alan
79 This appears to be BIOS not version dependent. So presumably there is a
82 static void quirk_isa_dma_hangs(struct pci_dev *dev)
84 if (!isa_dma_bridge_buggy) {
85 isa_dma_bridge_buggy=1;
86 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
90 * Its not totally clear which chipsets are the problematic ones
91 * We know 82C586 and 82C596 variants are affected.
93 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
94 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
95 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
96 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
97 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
98 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
102 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
103 * for some HT machines to use C4 w/o hanging.
105 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
110 pci_read_config_dword(dev, 0x40, &pmbase);
111 pmbase = pmbase & 0xff80;
115 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
122 * Chipsets where PCI->PCI transfers vanish or hang
124 static void quirk_nopcipci(struct pci_dev *dev)
126 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
127 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
128 pci_pci_problems |= PCIPCI_FAIL;
131 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
132 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
134 static void quirk_nopciamd(struct pci_dev *dev)
137 pci_read_config_byte(dev, 0x08, &rev);
140 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
141 pci_pci_problems |= PCIAGP_FAIL;
144 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
147 * Triton requires workarounds to be used by the drivers
149 static void quirk_triton(struct pci_dev *dev)
151 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
152 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
153 pci_pci_problems |= PCIPCI_TRITON;
156 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
158 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
162 * VIA Apollo KT133 needs PCI latency patch
163 * Made according to a windows driver based patch by George E. Breese
164 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
165 * and http://www.georgebreese.com/net/software/#PCI
166 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
167 * the info on which Mr Breese based his work.
169 * Updated based on further information from the site and also on
170 * information provided by VIA
172 static void quirk_vialatency(struct pci_dev *dev)
176 /* Ok we have a potential problem chipset here. Now see if we have
177 a buggy southbridge */
179 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
181 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
182 /* Check for buggy part revisions */
183 if (p->revision < 0x40 || p->revision > 0x42)
186 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
187 if (p==NULL) /* No problem parts */
189 /* Check for buggy part revisions */
190 if (p->revision < 0x10 || p->revision > 0x12)
195 * Ok we have the problem. Now set the PCI master grant to
196 * occur every master grant. The apparent bug is that under high
197 * PCI load (quite common in Linux of course) you can get data
198 * loss when the CPU is held off the bus for 3 bus master requests
199 * This happens to include the IDE controllers....
201 * VIA only apply this fix when an SB Live! is present but under
202 * both Linux and Windows this isn't enough, and we have seen
203 * corruption without SB Live! but with things like 3 UDMA IDE
204 * controllers. So we ignore that bit of the VIA recommendation..
207 pci_read_config_byte(dev, 0x76, &busarb);
208 /* Set bit 4 and bi 5 of byte 76 to 0x01
209 "Master priority rotation on every PCI master grant */
212 pci_write_config_byte(dev, 0x76, busarb);
213 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
220 /* Must restore this on a resume from RAM */
221 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
222 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
223 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
226 * VIA Apollo VP3 needs ETBF on BT848/878
228 static void quirk_viaetbf(struct pci_dev *dev)
230 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
231 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
232 pci_pci_problems |= PCIPCI_VIAETBF;
235 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
237 static void quirk_vsfx(struct pci_dev *dev)
239 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
240 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
241 pci_pci_problems |= PCIPCI_VSFX;
244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
247 * Ali Magik requires workarounds to be used by the drivers
248 * that DMA to AGP space. Latency must be set to 0xA and triton
249 * workaround applied too
250 * [Info kindly provided by ALi]
252 static void quirk_alimagik(struct pci_dev *dev)
254 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
255 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
256 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
263 * Natoma has some interesting boundary conditions with Zoran stuff
266 static void quirk_natoma(struct pci_dev *dev)
268 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
269 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
270 pci_pci_problems |= PCIPCI_NATOMA;
273 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
274 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
275 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
278 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
281 * This chip can cause PCI parity errors if config register 0xA0 is read
282 * while DMAs are occurring.
284 static void quirk_citrine(struct pci_dev *dev)
286 dev->cfg_size = 0xA0;
288 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
291 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
292 * If it's needed, re-allocate the region.
294 static void quirk_s3_64M(struct pci_dev *dev)
296 struct resource *r = &dev->resource[0];
298 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
299 r->flags |= IORESOURCE_UNSET;
304 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
305 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
308 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
309 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
310 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
311 * (which conflicts w/ BAR1's memory range).
313 static void quirk_cs5536_vsa(struct pci_dev *dev)
315 if (pci_resource_len(dev, 0) != 8) {
316 struct resource *res = &dev->resource[0];
317 res->end = res->start + 8 - 1;
318 dev_info(&dev->dev, "CS5536 ISA bridge bug detected "
319 "(incorrect header); workaround applied.\n");
322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
324 static void quirk_io_region(struct pci_dev *dev, int port,
325 unsigned size, int nr, const char *name)
328 struct pci_bus_region bus_region;
329 struct resource *res = dev->resource + nr;
331 pci_read_config_word(dev, port, ®ion);
332 region &= ~(size - 1);
337 res->name = pci_name(dev);
338 res->flags = IORESOURCE_IO;
340 /* Convert from PCI bus to resource space */
341 bus_region.start = region;
342 bus_region.end = region + size - 1;
343 pcibios_bus_to_resource(dev->bus, res, &bus_region);
345 if (!pci_claim_resource(dev, nr))
346 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
350 * ATI Northbridge setups MCE the processor if you even
351 * read somewhere between 0x3b0->0x3bb or read 0x3d3
353 static void quirk_ati_exploding_mce(struct pci_dev *dev)
355 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
356 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
357 request_region(0x3b0, 0x0C, "RadeonIGP");
358 request_region(0x3d3, 0x01, "RadeonIGP");
360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
363 * Let's make the southbridge information explicit instead
364 * of having to worry about people probing the ACPI areas,
365 * for example.. (Yes, it happens, and if you read the wrong
366 * ACPI register it will put the machine to sleep with no
367 * way of waking it up again. Bummer).
369 * ALI M7101: Two IO regions pointed to by words at
370 * 0xE0 (64 bytes of ACPI registers)
371 * 0xE2 (32 bytes of SMB registers)
373 static void quirk_ali7101_acpi(struct pci_dev *dev)
375 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
376 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
378 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
380 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
383 u32 mask, size, base;
385 pci_read_config_dword(dev, port, &devres);
386 if ((devres & enable) != enable)
388 mask = (devres >> 16) & 15;
389 base = devres & 0xffff;
392 unsigned bit = size >> 1;
393 if ((bit & mask) == bit)
398 * For now we only print it out. Eventually we'll want to
399 * reserve it (at least if it's in the 0x1000+ range), but
400 * let's get enough confirmation reports first.
403 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
406 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
409 u32 mask, size, base;
411 pci_read_config_dword(dev, port, &devres);
412 if ((devres & enable) != enable)
414 base = devres & 0xffff0000;
415 mask = (devres & 0x3f) << 16;
418 unsigned bit = size >> 1;
419 if ((bit & mask) == bit)
424 * For now we only print it out. Eventually we'll want to
425 * reserve it, but let's get enough confirmation reports first.
428 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
432 * PIIX4 ACPI: Two IO regions pointed to by longwords at
433 * 0x40 (64 bytes of ACPI registers)
434 * 0x90 (16 bytes of SMB registers)
435 * and a few strange programmable PIIX4 device resources.
437 static void quirk_piix4_acpi(struct pci_dev *dev)
441 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
442 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
444 /* Device resource A has enables for some of the other ones */
445 pci_read_config_dword(dev, 0x5c, &res_a);
447 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
448 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
450 /* Device resource D is just bitfields for static resources */
452 /* Device 12 enabled? */
453 if (res_a & (1 << 29)) {
454 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
455 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
457 /* Device 13 enabled? */
458 if (res_a & (1 << 30)) {
459 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
460 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
462 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
463 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
468 #define ICH_PMBASE 0x40
469 #define ICH_ACPI_CNTL 0x44
470 #define ICH4_ACPI_EN 0x10
471 #define ICH6_ACPI_EN 0x80
472 #define ICH4_GPIOBASE 0x58
473 #define ICH4_GPIO_CNTL 0x5c
474 #define ICH4_GPIO_EN 0x10
475 #define ICH6_GPIOBASE 0x48
476 #define ICH6_GPIO_CNTL 0x4c
477 #define ICH6_GPIO_EN 0x10
480 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
481 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
482 * 0x58 (64 bytes of GPIO I/O space)
484 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
489 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
490 * with low legacy (and fixed) ports. We don't know the decoding
491 * priority and can't tell whether the legacy device or the one created
492 * here is really at that address. This happens on boards with broken
496 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
497 if (enable & ICH4_ACPI_EN)
498 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
499 "ICH4 ACPI/GPIO/TCO");
501 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
502 if (enable & ICH4_GPIO_EN)
503 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
506 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
507 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
517 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
521 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
522 if (enable & ICH6_ACPI_EN)
523 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
524 "ICH6 ACPI/GPIO/TCO");
526 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
527 if (enable & ICH6_GPIO_EN)
528 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
532 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
537 pci_read_config_dword(dev, reg, &val);
545 * This is not correct. It is 16, 32 or 64 bytes depending on
546 * register D31:F0:ADh bits 5:4.
548 * But this gets us at least _part_ of it.
556 /* Just print it out for now. We should reserve it after more debugging */
557 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
560 static void quirk_ich6_lpc(struct pci_dev *dev)
562 /* Shared ACPI/GPIO decode with all ICH6+ */
563 ich6_lpc_acpi_gpio(dev);
565 /* ICH6-specific generic IO decode */
566 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
567 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
569 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
570 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
572 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
577 pci_read_config_dword(dev, reg, &val);
584 * IO base in bits 15:2, mask in bits 23:18, both
588 mask = (val >> 16) & 0xfc;
591 /* Just print it out for now. We should reserve it after more debugging */
592 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
595 /* ICH7-10 has the same common LPC generic IO decode registers */
596 static void quirk_ich7_lpc(struct pci_dev *dev)
598 /* We share the common ACPI/GPIO decode with ICH6 */
599 ich6_lpc_acpi_gpio(dev);
601 /* And have 4 ICH7+ generic decodes */
602 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
603 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
604 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
605 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
616 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
617 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
618 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
619 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
622 * VIA ACPI: One IO region pointed to by longword at
623 * 0x48 or 0x20 (256 bytes of ACPI registers)
625 static void quirk_vt82c586_acpi(struct pci_dev *dev)
627 if (dev->revision & 0x10)
628 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
631 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
634 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
635 * 0x48 (256 bytes of ACPI registers)
636 * 0x70 (128 bytes of hardware monitoring register)
637 * 0x90 (16 bytes of SMB registers)
639 static void quirk_vt82c686_acpi(struct pci_dev *dev)
641 quirk_vt82c586_acpi(dev);
643 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
646 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
648 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
651 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
652 * 0x88 (128 bytes of power management registers)
653 * 0xd0 (16 bytes of SMB registers)
655 static void quirk_vt8235_acpi(struct pci_dev *dev)
657 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
658 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
660 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
663 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
664 * Disable fast back-to-back on the secondary bus segment
666 static void quirk_xio2000a(struct pci_dev *dev)
668 struct pci_dev *pdev;
671 dev_warn(&dev->dev, "TI XIO2000a quirk detected; "
672 "secondary bus fast back-to-back transfers disabled\n");
673 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
674 pci_read_config_word(pdev, PCI_COMMAND, &command);
675 if (command & PCI_COMMAND_FAST_BACK)
676 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
679 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
682 #ifdef CONFIG_X86_IO_APIC
684 #include <asm/io_apic.h>
687 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
688 * devices to the external APIC.
690 * TODO: When we have device-specific interrupt routers,
691 * this code will go away from quirks.
693 static void quirk_via_ioapic(struct pci_dev *dev)
698 tmp = 0; /* nothing routed to external APIC */
700 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
702 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
703 tmp == 0 ? "Disa" : "Ena");
705 /* Offset 0x58: External APIC IRQ output control */
706 pci_write_config_byte (dev, 0x58, tmp);
708 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
709 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
712 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
713 * This leads to doubled level interrupt rates.
714 * Set this bit to get rid of cycle wastage.
715 * Otherwise uncritical.
717 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
720 #define BYPASS_APIC_DEASSERT 8
722 pci_read_config_byte(dev, 0x5B, &misc_control2);
723 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
724 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
725 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
728 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
729 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
732 * The AMD io apic can hang the box when an apic irq is masked.
733 * We check all revs >= B0 (yet not in the pre production!) as the bug
734 * is currently marked NoFix
736 * We have multiple reports of hangs with this chipset that went away with
737 * noapic specified. For the moment we assume it's the erratum. We may be wrong
738 * of course. However the advice is demonstrably good even if so..
740 static void quirk_amd_ioapic(struct pci_dev *dev)
742 if (dev->revision >= 0x02) {
743 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
744 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
747 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
749 static void quirk_ioapic_rmw(struct pci_dev *dev)
751 if (dev->devfn == 0 && dev->bus->number == 0)
754 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
755 #endif /* CONFIG_X86_IO_APIC */
758 * Some settings of MMRBC can lead to data corruption so block changes.
759 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
761 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
763 if (dev->subordinate && dev->revision <= 0x12) {
764 dev_info(&dev->dev, "AMD8131 rev %x detected; "
765 "disabling PCI-X MMRBC\n", dev->revision);
766 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
769 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
772 * FIXME: it is questionable that quirk_via_acpi
773 * is needed. It shows up as an ISA bridge, and does not
774 * support the PCI_INTERRUPT_LINE register at all. Therefore
775 * it seems like setting the pci_dev's 'irq' to the
776 * value of the ACPI SCI interrupt is only done for convenience.
779 static void quirk_via_acpi(struct pci_dev *d)
782 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
785 pci_read_config_byte(d, 0x42, &irq);
787 if (irq && (irq != 2))
790 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
791 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
795 * VIA bridges which have VLink
798 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
800 static void quirk_via_bridge(struct pci_dev *dev)
802 /* See what bridge we have and find the device ranges */
803 switch (dev->device) {
804 case PCI_DEVICE_ID_VIA_82C686:
805 /* The VT82C686 is special, it attaches to PCI and can have
806 any device number. All its subdevices are functions of
807 that single device. */
808 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
809 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
811 case PCI_DEVICE_ID_VIA_8237:
812 case PCI_DEVICE_ID_VIA_8237A:
813 via_vlink_dev_lo = 15;
815 case PCI_DEVICE_ID_VIA_8235:
816 via_vlink_dev_lo = 16;
818 case PCI_DEVICE_ID_VIA_8231:
819 case PCI_DEVICE_ID_VIA_8233_0:
820 case PCI_DEVICE_ID_VIA_8233A:
821 case PCI_DEVICE_ID_VIA_8233C_0:
822 via_vlink_dev_lo = 17;
826 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
827 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
828 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
829 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
830 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
831 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
832 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
833 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
836 * quirk_via_vlink - VIA VLink IRQ number update
839 * If the device we are dealing with is on a PIC IRQ we need to
840 * ensure that the IRQ line register which usually is not relevant
841 * for PCI cards, is actually written so that interrupts get sent
842 * to the right place.
843 * We only do this on systems where a VIA south bridge was detected,
844 * and only for VIA devices on the motherboard (see quirk_via_bridge
848 static void quirk_via_vlink(struct pci_dev *dev)
852 /* Check if we have VLink at all */
853 if (via_vlink_dev_lo == -1)
858 /* Don't quirk interrupts outside the legacy IRQ range */
859 if (!new_irq || new_irq > 15)
862 /* Internal device ? */
863 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
864 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
867 /* This is an internal VLink device on a PIC interrupt. The BIOS
868 ought to have set this but may not have, so we redo it */
870 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
871 if (new_irq != irq) {
872 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
874 udelay(15); /* unknown if delay really needed */
875 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
878 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
881 * VIA VT82C598 has its device ID settable and many BIOSes
882 * set it to the ID of VT82C597 for backward compatibility.
883 * We need to switch it off to be able to recognize the real
886 static void quirk_vt82c598_id(struct pci_dev *dev)
888 pci_write_config_byte(dev, 0xfc, 0);
889 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
891 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
894 * CardBus controllers have a legacy base address that enables them
895 * to respond as i82365 pcmcia controllers. We don't want them to
896 * do this even if the Linux CardBus driver is not loaded, because
897 * the Linux i82365 driver does not (and should not) handle CardBus.
899 static void quirk_cardbus_legacy(struct pci_dev *dev)
901 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
903 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
904 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
905 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
906 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
909 * Following the PCI ordering rules is optional on the AMD762. I'm not
910 * sure what the designers were smoking but let's not inhale...
912 * To be fair to AMD, it follows the spec by default, its BIOS people
915 static void quirk_amd_ordering(struct pci_dev *dev)
918 pci_read_config_dword(dev, 0x4C, &pcic);
921 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
922 pci_write_config_dword(dev, 0x4C, pcic);
923 pci_read_config_dword(dev, 0x84, &pcic);
924 pcic |= (1<<23); /* Required in this mode */
925 pci_write_config_dword(dev, 0x84, pcic);
928 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
929 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
932 * DreamWorks provided workaround for Dunord I-3000 problem
934 * This card decodes and responds to addresses not apparently
935 * assigned to it. We force a larger allocation to ensure that
936 * nothing gets put too close to it.
938 static void quirk_dunord(struct pci_dev *dev)
940 struct resource *r = &dev->resource [1];
942 r->flags |= IORESOURCE_UNSET;
946 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
949 * i82380FB mobile docking controller: its PCI-to-PCI bridge
950 * is subtractive decoding (transparent), and does indicate this
951 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
954 static void quirk_transparent_bridge(struct pci_dev *dev)
956 dev->transparent = 1;
958 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
959 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
962 * Common misconfiguration of the MediaGX/Geode PCI master that will
963 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
964 * datasheets found at http://www.national.com/analog for info on what
967 static void quirk_mediagx_master(struct pci_dev *dev)
970 pci_read_config_byte(dev, 0x41, ®);
973 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
974 pci_write_config_byte(dev, 0x41, reg);
977 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
978 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
981 * Ensure C0 rev restreaming is off. This is normally done by
982 * the BIOS but in the odd case it is not the results are corruption
983 * hence the presence of a Linux check
985 static void quirk_disable_pxb(struct pci_dev *pdev)
989 if (pdev->revision != 0x04) /* Only C0 requires this */
991 pci_read_config_word(pdev, 0x40, &config);
992 if (config & (1<<6)) {
994 pci_write_config_word(pdev, 0x40, config);
995 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
998 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
999 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1001 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1003 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1006 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1008 pci_read_config_byte(pdev, 0x40, &tmp);
1009 pci_write_config_byte(pdev, 0x40, tmp|1);
1010 pci_write_config_byte(pdev, 0x9, 1);
1011 pci_write_config_byte(pdev, 0xa, 6);
1012 pci_write_config_byte(pdev, 0x40, tmp);
1014 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1015 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1018 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1019 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1020 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1021 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1022 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1023 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1024 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1025 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1028 * Serverworks CSB5 IDE does not fully support native mode
1030 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1033 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1037 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1038 /* PCI layer will sort out resources */
1041 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1044 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1046 static void quirk_ide_samemode(struct pci_dev *pdev)
1050 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1052 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1053 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1056 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1059 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1062 * Some ATA devices break if put into D3
1065 static void quirk_no_ata_d3(struct pci_dev *pdev)
1067 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1069 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1070 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1071 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1072 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1073 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1074 /* ALi loses some register settings that we cannot then restore */
1075 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1076 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1077 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1078 occur when mode detecting */
1079 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1080 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1082 /* This was originally an Alpha specific thing, but it really fits here.
1083 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1085 static void quirk_eisa_bridge(struct pci_dev *dev)
1087 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1089 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1093 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1094 * is not activated. The myth is that Asus said that they do not want the
1095 * users to be irritated by just another PCI Device in the Win98 device
1096 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1097 * package 2.7.0 for details)
1099 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1100 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1101 * becomes necessary to do this tweak in two steps -- the chosen trigger
1102 * is either the Host bridge (preferred) or on-board VGA controller.
1104 * Note that we used to unhide the SMBus that way on Toshiba laptops
1105 * (Satellite A40 and Tecra M2) but then found that the thermal management
1106 * was done by SMM code, which could cause unsynchronized concurrent
1107 * accesses to the SMBus registers, with potentially bad effects. Thus you
1108 * should be very careful when adding new entries: if SMM is accessing the
1109 * Intel SMBus, this is a very good reason to leave it hidden.
1111 * Likewise, many recent laptops use ACPI for thermal management. If the
1112 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1113 * natively, and keeping the SMBus hidden is the right thing to do. If you
1114 * are about to add an entry in the table below, please first disassemble
1115 * the DSDT and double-check that there is no code accessing the SMBus.
1117 static int asus_hides_smbus;
1119 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1121 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1122 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1123 switch(dev->subsystem_device) {
1124 case 0x8025: /* P4B-LX */
1125 case 0x8070: /* P4B */
1126 case 0x8088: /* P4B533 */
1127 case 0x1626: /* L3C notebook */
1128 asus_hides_smbus = 1;
1130 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1131 switch(dev->subsystem_device) {
1132 case 0x80b1: /* P4GE-V */
1133 case 0x80b2: /* P4PE */
1134 case 0x8093: /* P4B533-V */
1135 asus_hides_smbus = 1;
1137 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1138 switch(dev->subsystem_device) {
1139 case 0x8030: /* P4T533 */
1140 asus_hides_smbus = 1;
1142 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1143 switch (dev->subsystem_device) {
1144 case 0x8070: /* P4G8X Deluxe */
1145 asus_hides_smbus = 1;
1147 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1148 switch (dev->subsystem_device) {
1149 case 0x80c9: /* PU-DLS */
1150 asus_hides_smbus = 1;
1152 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1153 switch (dev->subsystem_device) {
1154 case 0x1751: /* M2N notebook */
1155 case 0x1821: /* M5N notebook */
1156 case 0x1897: /* A6L notebook */
1157 asus_hides_smbus = 1;
1159 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1160 switch (dev->subsystem_device) {
1161 case 0x184b: /* W1N notebook */
1162 case 0x186a: /* M6Ne notebook */
1163 asus_hides_smbus = 1;
1165 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1166 switch (dev->subsystem_device) {
1167 case 0x80f2: /* P4P800-X */
1168 asus_hides_smbus = 1;
1170 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1171 switch (dev->subsystem_device) {
1172 case 0x1882: /* M6V notebook */
1173 case 0x1977: /* A6VA notebook */
1174 asus_hides_smbus = 1;
1176 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1177 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1178 switch(dev->subsystem_device) {
1179 case 0x088C: /* HP Compaq nc8000 */
1180 case 0x0890: /* HP Compaq nc6000 */
1181 asus_hides_smbus = 1;
1183 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1184 switch (dev->subsystem_device) {
1185 case 0x12bc: /* HP D330L */
1186 case 0x12bd: /* HP D530 */
1187 case 0x006a: /* HP Compaq nx9500 */
1188 asus_hides_smbus = 1;
1190 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1191 switch (dev->subsystem_device) {
1192 case 0x12bf: /* HP xw4100 */
1193 asus_hides_smbus = 1;
1195 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1196 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1197 switch(dev->subsystem_device) {
1198 case 0xC00C: /* Samsung P35 notebook */
1199 asus_hides_smbus = 1;
1201 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1202 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1203 switch(dev->subsystem_device) {
1204 case 0x0058: /* Compaq Evo N620c */
1205 asus_hides_smbus = 1;
1207 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1208 switch(dev->subsystem_device) {
1209 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1210 /* Motherboard doesn't have Host bridge
1211 * subvendor/subdevice IDs, therefore checking
1212 * its on-board VGA controller */
1213 asus_hides_smbus = 1;
1215 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1216 switch(dev->subsystem_device) {
1217 case 0x00b8: /* Compaq Evo D510 CMT */
1218 case 0x00b9: /* Compaq Evo D510 SFF */
1219 case 0x00ba: /* Compaq Evo D510 USDT */
1220 /* Motherboard doesn't have Host bridge
1221 * subvendor/subdevice IDs and on-board VGA
1222 * controller is disabled if an AGP card is
1223 * inserted, therefore checking USB UHCI
1225 asus_hides_smbus = 1;
1227 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1228 switch (dev->subsystem_device) {
1229 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1230 /* Motherboard doesn't have host bridge
1231 * subvendor/subdevice IDs, therefore checking
1232 * its on-board VGA controller */
1233 asus_hides_smbus = 1;
1237 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1238 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1239 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1240 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1241 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1242 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1243 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1244 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1245 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1246 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1248 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1249 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1250 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1252 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1256 if (likely(!asus_hides_smbus))
1259 pci_read_config_word(dev, 0xF2, &val);
1261 pci_write_config_word(dev, 0xF2, val & (~0x8));
1262 pci_read_config_word(dev, 0xF2, &val);
1264 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1266 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1269 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1270 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1271 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1272 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1273 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1274 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1275 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1276 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1277 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1278 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1279 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1280 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1281 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1282 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1284 /* It appears we just have one such device. If not, we have a warning */
1285 static void __iomem *asus_rcba_base;
1286 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1290 if (likely(!asus_hides_smbus))
1292 WARN_ON(asus_rcba_base);
1294 pci_read_config_dword(dev, 0xF0, &rcba);
1295 /* use bits 31:14, 16 kB aligned */
1296 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1297 if (asus_rcba_base == NULL)
1301 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1305 if (likely(!asus_hides_smbus || !asus_rcba_base))
1307 /* read the Function Disable register, dword mode only */
1308 val = readl(asus_rcba_base + 0x3418);
1309 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1312 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1314 if (likely(!asus_hides_smbus || !asus_rcba_base))
1316 iounmap(asus_rcba_base);
1317 asus_rcba_base = NULL;
1318 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1321 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1323 asus_hides_smbus_lpc_ich6_suspend(dev);
1324 asus_hides_smbus_lpc_ich6_resume_early(dev);
1325 asus_hides_smbus_lpc_ich6_resume(dev);
1327 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1328 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1329 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1330 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1333 * SiS 96x south bridge: BIOS typically hides SMBus device...
1335 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1338 pci_read_config_byte(dev, 0x77, &val);
1340 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1341 pci_write_config_byte(dev, 0x77, val & ~0x10);
1344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1346 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1347 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1348 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1349 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1350 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1351 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1354 * ... This is further complicated by the fact that some SiS96x south
1355 * bridges pretend to be 85C503/5513 instead. In that case see if we
1356 * spotted a compatible north bridge to make sure.
1357 * (pci_find_device doesn't work yet)
1359 * We can also enable the sis96x bit in the discovery register..
1361 #define SIS_DETECT_REGISTER 0x40
1363 static void quirk_sis_503(struct pci_dev *dev)
1368 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1369 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1370 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1371 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1372 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1377 * Ok, it now shows up as a 96x.. run the 96x quirk by
1378 * hand in case it has already been processed.
1379 * (depends on link order, which is apparently not guaranteed)
1381 dev->device = devid;
1382 quirk_sis_96x_smbus(dev);
1384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1385 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1389 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1390 * and MC97 modem controller are disabled when a second PCI soundcard is
1391 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1394 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1397 int asus_hides_ac97 = 0;
1399 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1400 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1401 asus_hides_ac97 = 1;
1404 if (!asus_hides_ac97)
1407 pci_read_config_byte(dev, 0x50, &val);
1409 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1410 pci_read_config_byte(dev, 0x50, &val);
1412 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1414 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1417 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1418 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1420 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1423 * If we are using libata we can drive this chip properly but must
1424 * do this early on to make the additional device appear during
1427 static void quirk_jmicron_ata(struct pci_dev *pdev)
1429 u32 conf1, conf5, class;
1432 /* Only poke fn 0 */
1433 if (PCI_FUNC(pdev->devfn))
1436 pci_read_config_dword(pdev, 0x40, &conf1);
1437 pci_read_config_dword(pdev, 0x80, &conf5);
1439 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1440 conf5 &= ~(1 << 24); /* Clear bit 24 */
1442 switch (pdev->device) {
1443 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1444 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1445 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1446 /* The controller should be in single function ahci mode */
1447 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1450 case PCI_DEVICE_ID_JMICRON_JMB365:
1451 case PCI_DEVICE_ID_JMICRON_JMB366:
1452 /* Redirect IDE second PATA port to the right spot */
1455 case PCI_DEVICE_ID_JMICRON_JMB361:
1456 case PCI_DEVICE_ID_JMICRON_JMB363:
1457 case PCI_DEVICE_ID_JMICRON_JMB369:
1458 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1459 /* Set the class codes correctly and then direct IDE 0 */
1460 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1463 case PCI_DEVICE_ID_JMICRON_JMB368:
1464 /* The controller should be in single function IDE mode */
1465 conf1 |= 0x00C00000; /* Set 22, 23 */
1469 pci_write_config_dword(pdev, 0x40, conf1);
1470 pci_write_config_dword(pdev, 0x80, conf5);
1472 /* Update pdev accordingly */
1473 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1474 pdev->hdr_type = hdr & 0x7f;
1475 pdev->multifunction = !!(hdr & 0x80);
1477 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1478 pdev->class = class >> 8;
1480 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1481 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1482 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1483 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1484 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1485 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1486 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1487 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1488 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1489 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1490 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1491 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1492 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1493 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1494 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1495 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1496 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1497 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1501 #ifdef CONFIG_X86_IO_APIC
1502 static void quirk_alder_ioapic(struct pci_dev *pdev)
1506 if ((pdev->class >> 8) != 0xff00)
1509 /* the first BAR is the location of the IO APIC...we must
1510 * not touch this (and it's already covered by the fixmap), so
1511 * forcibly insert it into the resource tree */
1512 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1513 insert_resource(&iomem_resource, &pdev->resource[0]);
1515 /* The next five BARs all seem to be rubbish, so just clean
1517 for (i=1; i < 6; i++) {
1518 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1522 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1525 static void quirk_pcie_mch(struct pci_dev *pdev)
1530 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1531 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1532 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1536 * It's possible for the MSI to get corrupted if shpc and acpi
1537 * are used together on certain PXH-based systems.
1539 static void quirk_pcie_pxh(struct pci_dev *dev)
1543 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1545 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1546 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1547 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1548 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1549 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1552 * Some Intel PCI Express chipsets have trouble with downstream
1553 * device power management.
1555 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1557 pci_pm_d3_delay = 120;
1561 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1562 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1563 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1564 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1565 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1577 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1579 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1580 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1583 #ifdef CONFIG_X86_IO_APIC
1585 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1586 * remap the original interrupt in the linux kernel to the boot interrupt, so
1587 * that a PCI device's interrupt handler is installed on the boot interrupt
1590 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1592 if (noioapicquirk || noioapicreroute)
1595 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1596 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1597 dev->vendor, dev->device);
1599 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1601 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1602 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1603 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1604 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1605 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1607 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1608 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1609 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1610 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1611 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1612 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1613 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1614 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1617 * On some chipsets we can disable the generation of legacy INTx boot
1622 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1623 * 300641-004US, section 5.7.3.
1625 #define INTEL_6300_IOAPIC_ABAR 0x40
1626 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1628 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1630 u16 pci_config_word;
1635 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1636 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1637 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1639 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1640 dev->vendor, dev->device);
1642 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1643 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1646 * disable boot interrupts on HT-1000
1648 #define BC_HT1000_FEATURE_REG 0x64
1649 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1650 #define BC_HT1000_MAP_IDX 0xC00
1651 #define BC_HT1000_MAP_DATA 0xC01
1653 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1655 u32 pci_config_dword;
1661 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1662 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1663 BC_HT1000_PIC_REGS_ENABLE);
1665 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1666 outb(irq, BC_HT1000_MAP_IDX);
1667 outb(0x00, BC_HT1000_MAP_DATA);
1670 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1672 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1673 dev->vendor, dev->device);
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1676 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1679 * disable boot interrupts on AMD and ATI chipsets
1682 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1683 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1684 * (due to an erratum).
1686 #define AMD_813X_MISC 0x40
1687 #define AMD_813X_NOIOAMODE (1<<0)
1688 #define AMD_813X_REV_B1 0x12
1689 #define AMD_813X_REV_B2 0x13
1691 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1693 u32 pci_config_dword;
1697 if ((dev->revision == AMD_813X_REV_B1) ||
1698 (dev->revision == AMD_813X_REV_B2))
1701 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1702 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1703 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1705 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1706 dev->vendor, dev->device);
1708 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1709 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1710 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1711 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1713 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1715 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1717 u16 pci_config_word;
1722 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1723 if (!pci_config_word) {
1724 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] "
1725 "already disabled\n", dev->vendor, dev->device);
1728 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1729 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1730 dev->vendor, dev->device);
1732 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1733 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1734 #endif /* CONFIG_X86_IO_APIC */
1737 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1738 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1739 * Re-allocate the region if needed...
1741 static void quirk_tc86c001_ide(struct pci_dev *dev)
1743 struct resource *r = &dev->resource[0];
1745 if (r->start & 0x8) {
1746 r->flags |= IORESOURCE_UNSET;
1751 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1752 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1753 quirk_tc86c001_ide);
1756 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
1757 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
1758 * being read correctly if bit 7 of the base address is set.
1759 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
1760 * Re-allocate the regions to a 256-byte boundary if necessary.
1762 static void quirk_plx_pci9050(struct pci_dev *dev)
1766 /* Fixed in revision 2 (PCI 9052). */
1767 if (dev->revision >= 2)
1769 for (bar = 0; bar <= 1; bar++)
1770 if (pci_resource_len(dev, bar) == 0x80 &&
1771 (pci_resource_start(dev, bar) & 0x80)) {
1772 struct resource *r = &dev->resource[bar];
1774 "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
1776 r->flags |= IORESOURCE_UNSET;
1781 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
1784 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
1785 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
1786 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
1787 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
1789 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
1792 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
1793 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
1795 static void quirk_netmos(struct pci_dev *dev)
1797 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1798 unsigned int num_serial = dev->subsystem_device & 0xf;
1801 * These Netmos parts are multiport serial devices with optional
1802 * parallel ports. Even when parallel ports are present, they
1803 * are identified as class SERIAL, which means the serial driver
1804 * will claim them. To prevent this, mark them as class OTHER.
1805 * These combo devices should be claimed by parport_serial.
1807 * The subdevice ID is of the form 0x00PS, where <P> is the number
1808 * of parallel ports and <S> is the number of serial ports.
1810 switch (dev->device) {
1811 case PCI_DEVICE_ID_NETMOS_9835:
1812 /* Well, this rule doesn't hold for the following 9835 device */
1813 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1814 dev->subsystem_device == 0x0299)
1816 case PCI_DEVICE_ID_NETMOS_9735:
1817 case PCI_DEVICE_ID_NETMOS_9745:
1818 case PCI_DEVICE_ID_NETMOS_9845:
1819 case PCI_DEVICE_ID_NETMOS_9855:
1821 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1822 "%u serial); changing class SERIAL to OTHER "
1823 "(use parport_serial)\n",
1824 dev->device, num_parallel, num_serial);
1825 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1826 (dev->class & 0xff);
1830 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
1831 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
1833 static void quirk_e100_interrupt(struct pci_dev *dev)
1839 switch (dev->device) {
1840 /* PCI IDs taken from drivers/net/e100.c */
1842 case 0x1030 ... 0x1034:
1843 case 0x1038 ... 0x103E:
1844 case 0x1050 ... 0x1057:
1846 case 0x1064 ... 0x106B:
1847 case 0x1091 ... 0x1095:
1860 * Some firmware hands off the e100 with interrupts enabled,
1861 * which can cause a flood of interrupts if packets are
1862 * received before the driver attaches to the device. So
1863 * disable all e100 interrupts here. The driver will
1864 * re-enable them when it's ready.
1866 pci_read_config_word(dev, PCI_COMMAND, &command);
1868 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1872 * Check that the device is in the D0 power state. If it's not,
1873 * there is no point to look any further.
1876 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
1877 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1881 /* Convert from PCI bus to resource space. */
1882 csr = ioremap(pci_resource_start(dev, 0), 8);
1884 dev_warn(&dev->dev, "Can't map e100 registers\n");
1888 cmd_hi = readb(csr + 3);
1890 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1897 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
1898 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
1901 * The 82575 and 82598 may experience data corruption issues when transitioning
1902 * out of L0S. To prevent this we need to disable L0S on the pci-e link
1904 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
1906 dev_info(&dev->dev, "Disabling L0s\n");
1907 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1909 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1910 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1911 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1912 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1913 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1914 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1915 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1916 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1917 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1918 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1919 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1920 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1921 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1924 static void fixup_rev1_53c810(struct pci_dev *dev)
1926 /* rev 1 ncr53c810 chips don't set the class at all which means
1927 * they don't get their resources remapped. Fix that here.
1930 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1931 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1932 dev->class = PCI_CLASS_STORAGE_SCSI;
1935 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1937 /* Enable 1k I/O space granularity on the Intel P64H2 */
1938 static void quirk_p64h2_1k_io(struct pci_dev *dev)
1942 pci_read_config_word(dev, 0x40, &en1k);
1945 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1946 dev->io_window_1k = 1;
1949 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1951 /* Under some circumstances, AER is not linked with extended capabilities.
1952 * Force it to be linked by setting the corresponding control bit in the
1955 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1958 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1960 pci_write_config_byte(dev, 0xf41, b | 0x20);
1962 "Linking AER extended capability\n");
1966 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1967 quirk_nvidia_ck804_pcie_aer_ext_cap);
1968 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1969 quirk_nvidia_ck804_pcie_aer_ext_cap);
1971 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1974 * Disable PCI Bus Parking and PCI Master read caching on CX700
1975 * which causes unspecified timing errors with a VT6212L on the PCI
1976 * bus leading to USB2.0 packet loss.
1978 * This quirk is only enabled if a second (on the external PCI bus)
1979 * VT6212L is found -- the CX700 core itself also contains a USB
1980 * host controller with the same PCI ID as the VT6212L.
1983 /* Count VT6212L instances */
1984 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
1985 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
1988 /* p should contain the first (internal) VT6212L -- see if we have
1989 an external one by searching again */
1990 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
1995 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1997 /* Turn off PCI Bus Parking */
1998 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2001 "Disabling VIA CX700 PCI parking\n");
2005 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2007 /* Turn off PCI Master read caching */
2008 pci_write_config_byte(dev, 0x72, 0x0);
2010 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2011 pci_write_config_byte(dev, 0x75, 0x1);
2013 /* Disable "Read FIFO Timer" */
2014 pci_write_config_byte(dev, 0x77, 0x0);
2017 "Disabling VIA CX700 PCI caching\n");
2021 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2024 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2025 * VPD end tag will hang the device. This problem was initially
2026 * observed when a vpd entry was created in sysfs
2027 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2028 * will dump 32k of data. Reading a full 32k will cause an access
2029 * beyond the VPD end tag causing the device to hang. Once the device
2030 * is hung, the bnx2 driver will not be able to reset the device.
2031 * We believe that it is legal to read beyond the end tag and
2032 * therefore the solution is to limit the read/write length.
2034 static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
2037 * Only disable the VPD capability for 5706, 5706S, 5708,
2038 * 5708S and 5709 rev. A
2040 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
2041 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
2042 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
2043 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
2044 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2045 (dev->revision & 0xf0) == 0x0)) {
2047 dev->vpd->len = 0x80;
2051 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2052 PCI_DEVICE_ID_NX2_5706,
2053 quirk_brcm_570x_limit_vpd);
2054 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2055 PCI_DEVICE_ID_NX2_5706S,
2056 quirk_brcm_570x_limit_vpd);
2057 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2058 PCI_DEVICE_ID_NX2_5708,
2059 quirk_brcm_570x_limit_vpd);
2060 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2061 PCI_DEVICE_ID_NX2_5708S,
2062 quirk_brcm_570x_limit_vpd);
2063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2064 PCI_DEVICE_ID_NX2_5709,
2065 quirk_brcm_570x_limit_vpd);
2066 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2067 PCI_DEVICE_ID_NX2_5709S,
2068 quirk_brcm_570x_limit_vpd);
2070 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2074 pci_read_config_dword(dev, 0xf4, &rev);
2076 /* Only CAP the MRRS if the device is a 5719 A0 */
2077 if (rev == 0x05719000) {
2078 int readrq = pcie_get_readrq(dev);
2080 pcie_set_readrq(dev, 2048);
2084 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2085 PCI_DEVICE_ID_TIGON3_5719,
2086 quirk_brcm_5719_limit_mrrs);
2088 /* Originally in EDAC sources for i82875P:
2089 * Intel tells BIOS developers to hide device 6 which
2090 * configures the overflow device access containing
2091 * the DRBs - this is where we expose device 6.
2092 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2094 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2098 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2099 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2100 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2104 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2105 quirk_unhide_mch_dev6);
2106 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2107 quirk_unhide_mch_dev6);
2109 #ifdef CONFIG_TILEPRO
2111 * The Tilera TILEmpower tilepro platform needs to set the link speed
2112 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
2113 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
2114 * capability register of the PEX8624 PCIe switch. The switch
2115 * supports link speed auto negotiation, but falsely sets
2116 * the link speed to 5GT/s.
2118 static void quirk_tile_plx_gen1(struct pci_dev *dev)
2120 if (tile_plx_gen1) {
2121 pci_write_config_dword(dev, 0x98, 0x1);
2125 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
2126 #endif /* CONFIG_TILEPRO */
2128 #ifdef CONFIG_PCI_MSI
2129 /* Some chipsets do not support MSI. We cannot easily rely on setting
2130 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2131 * some other buses controlled by the chipset even if Linux is not
2132 * aware of it. Instead of setting the flag on all buses in the
2133 * machine, simply disable MSI globally.
2135 static void quirk_disable_all_msi(struct pci_dev *dev)
2138 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2140 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2141 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2142 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2143 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2144 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2145 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2146 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2148 /* Disable MSI on chipsets that are known to not support it */
2149 static void quirk_disable_msi(struct pci_dev *dev)
2151 if (dev->subordinate) {
2152 dev_warn(&dev->dev, "MSI quirk detected; "
2153 "subordinate MSI disabled\n");
2154 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2158 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2162 * The APC bridge device in AMD 780 family northbridges has some random
2163 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2164 * we use the possible vendor/device IDs of the host bridge for the
2165 * declared quirk, and search for the APC bridge by slot number.
2167 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2169 struct pci_dev *apc_bridge;
2171 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2173 if (apc_bridge->device == 0x9602)
2174 quirk_disable_msi(apc_bridge);
2175 pci_dev_put(apc_bridge);
2178 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2179 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_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 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 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 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 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 nvenet_msi_disable(struct pci_dev *dev)
2277 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2280 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2281 strstr(board_name, "P5N32-E SLI"))) {
2283 "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2287 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2288 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2289 nvenet_msi_disable);
2292 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2293 * config register. This register controls the routing of legacy
2294 * interrupts from devices that route through the MCP55. If this register
2295 * is misprogrammed, interrupts are only sent to the BSP, unlike
2296 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2297 * having this register set properly prevents kdump from booting up
2298 * properly, so let's make sure that we have it set correctly.
2299 * Note that this is an undocumented register.
2301 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2305 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2308 pci_read_config_dword(dev, 0x74, &cfg);
2310 if (cfg & ((1 << 2) | (1 << 15))) {
2311 printk(KERN_INFO "Rewriting irq routing register on MCP55\n");
2312 cfg &= ~((1 << 2) | (1 << 15));
2313 pci_write_config_dword(dev, 0x74, cfg);
2317 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2318 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2319 nvbridge_check_legacy_irq_routing);
2321 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2322 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2323 nvbridge_check_legacy_irq_routing);
2325 static int ht_check_msi_mapping(struct pci_dev *dev)
2330 /* check if there is HT MSI cap or enabled on this device */
2331 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2332 while (pos && ttl--) {
2337 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2339 if (flags & HT_MSI_FLAGS_ENABLE) {
2346 pos = pci_find_next_ht_capability(dev, pos,
2347 HT_CAPTYPE_MSI_MAPPING);
2353 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2355 struct pci_dev *dev;
2360 dev_no = host_bridge->devfn >> 3;
2361 for (i = dev_no + 1; i < 0x20; i++) {
2362 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2366 /* found next host bridge ?*/
2367 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2373 if (ht_check_msi_mapping(dev)) {
2384 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2385 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2387 static int is_end_of_ht_chain(struct pci_dev *dev)
2393 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2398 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2400 ctrl_off = ((flags >> 10) & 1) ?
2401 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2402 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2404 if (ctrl & (1 << 6))
2411 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2413 struct pci_dev *host_bridge;
2418 dev_no = dev->devfn >> 3;
2419 for (i = dev_no; i >= 0; i--) {
2420 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2424 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2429 pci_dev_put(host_bridge);
2435 /* don't enable end_device/host_bridge with leaf directly here */
2436 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2437 host_bridge_with_leaf(host_bridge))
2440 /* root did that ! */
2441 if (msi_ht_cap_enabled(host_bridge))
2444 ht_enable_msi_mapping(dev);
2447 pci_dev_put(host_bridge);
2450 static void ht_disable_msi_mapping(struct pci_dev *dev)
2454 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2455 while (pos && ttl--) {
2458 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2460 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2462 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2463 flags & ~HT_MSI_FLAGS_ENABLE);
2465 pos = pci_find_next_ht_capability(dev, pos,
2466 HT_CAPTYPE_MSI_MAPPING);
2470 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2472 struct pci_dev *host_bridge;
2476 if (!pci_msi_enabled())
2479 /* check if there is HT MSI cap or enabled on this device */
2480 found = ht_check_msi_mapping(dev);
2487 * HT MSI mapping should be disabled on devices that are below
2488 * a non-Hypertransport host bridge. Locate the host bridge...
2490 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2491 if (host_bridge == NULL) {
2493 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2497 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2499 /* Host bridge is to HT */
2501 /* it is not enabled, try to enable it */
2503 ht_enable_msi_mapping(dev);
2505 nv_ht_enable_msi_mapping(dev);
2510 /* HT MSI is not enabled */
2514 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2515 ht_disable_msi_mapping(dev);
2518 pci_dev_put(host_bridge);
2521 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2523 return __nv_msi_ht_cap_quirk(dev, 1);
2526 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2528 return __nv_msi_ht_cap_quirk(dev, 0);
2531 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2532 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2534 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2535 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2537 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2539 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2541 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2545 /* SB700 MSI issue will be fixed at HW level from revision A21,
2546 * we need check PCI REVISION ID of SMBus controller to get SB700
2549 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2554 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2555 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2558 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2560 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2561 if (dev->revision < 0x18) {
2562 dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n");
2563 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2567 PCI_DEVICE_ID_TIGON3_5780,
2568 quirk_msi_intx_disable_bug);
2569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2570 PCI_DEVICE_ID_TIGON3_5780S,
2571 quirk_msi_intx_disable_bug);
2572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2573 PCI_DEVICE_ID_TIGON3_5714,
2574 quirk_msi_intx_disable_bug);
2575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2576 PCI_DEVICE_ID_TIGON3_5714S,
2577 quirk_msi_intx_disable_bug);
2578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2579 PCI_DEVICE_ID_TIGON3_5715,
2580 quirk_msi_intx_disable_bug);
2581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2582 PCI_DEVICE_ID_TIGON3_5715S,
2583 quirk_msi_intx_disable_bug);
2585 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2586 quirk_msi_intx_disable_ati_bug);
2587 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2588 quirk_msi_intx_disable_ati_bug);
2589 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2590 quirk_msi_intx_disable_ati_bug);
2591 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2592 quirk_msi_intx_disable_ati_bug);
2593 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2594 quirk_msi_intx_disable_ati_bug);
2596 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2597 quirk_msi_intx_disable_bug);
2598 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2599 quirk_msi_intx_disable_bug);
2600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2601 quirk_msi_intx_disable_bug);
2603 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2604 quirk_msi_intx_disable_bug);
2605 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2606 quirk_msi_intx_disable_bug);
2607 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2608 quirk_msi_intx_disable_bug);
2609 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2610 quirk_msi_intx_disable_bug);
2611 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2612 quirk_msi_intx_disable_bug);
2613 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
2614 quirk_msi_intx_disable_bug);
2615 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
2616 quirk_msi_intx_disable_qca_bug);
2617 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
2618 quirk_msi_intx_disable_qca_bug);
2619 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
2620 quirk_msi_intx_disable_qca_bug);
2621 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
2622 quirk_msi_intx_disable_qca_bug);
2623 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
2624 quirk_msi_intx_disable_qca_bug);
2625 #endif /* CONFIG_PCI_MSI */
2627 /* Allow manual resource allocation for PCI hotplug bridges
2628 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2629 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2630 * kernel fails to allocate resources when hotplug device is
2631 * inserted and PCI bus is rescanned.
2633 static void quirk_hotplug_bridge(struct pci_dev *dev)
2635 dev->is_hotplug_bridge = 1;
2638 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
2641 * This is a quirk for the Ricoh MMC controller found as a part of
2642 * some mulifunction chips.
2644 * This is very similar and based on the ricoh_mmc driver written by
2645 * Philip Langdale. Thank you for these magic sequences.
2647 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2648 * and one or both of cardbus or firewire.
2650 * It happens that they implement SD and MMC
2651 * support as separate controllers (and PCI functions). The linux SDHCI
2652 * driver supports MMC cards but the chip detects MMC cards in hardware
2653 * and directs them to the MMC controller - so the SDHCI driver never sees
2656 * To get around this, we must disable the useless MMC controller.
2657 * At that point, the SDHCI controller will start seeing them
2658 * It seems to be the case that the relevant PCI registers to deactivate the
2659 * MMC controller live on PCI function 0, which might be the cardbus controller
2660 * or the firewire controller, depending on the particular chip in question
2662 * This has to be done early, because as soon as we disable the MMC controller
2663 * other pci functions shift up one level, e.g. function #2 becomes function
2664 * #1, and this will confuse the pci core.
2667 #ifdef CONFIG_MMC_RICOH_MMC
2668 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
2670 /* disable via cardbus interface */
2675 /* disable must be done via function #0 */
2676 if (PCI_FUNC(dev->devfn))
2679 pci_read_config_byte(dev, 0xB7, &disable);
2683 pci_read_config_byte(dev, 0x8E, &write_enable);
2684 pci_write_config_byte(dev, 0x8E, 0xAA);
2685 pci_read_config_byte(dev, 0x8D, &write_target);
2686 pci_write_config_byte(dev, 0x8D, 0xB7);
2687 pci_write_config_byte(dev, 0xB7, disable | 0x02);
2688 pci_write_config_byte(dev, 0x8E, write_enable);
2689 pci_write_config_byte(dev, 0x8D, write_target);
2691 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2692 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2694 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2695 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2697 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
2699 /* disable via firewire interface */
2703 /* disable must be done via function #0 */
2704 if (PCI_FUNC(dev->devfn))
2707 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
2708 * certain types of SD/MMC cards. Lowering the SD base
2709 * clock frequency from 200Mhz to 50Mhz fixes this issue.
2711 * 0x150 - SD2.0 mode enable for changing base clock
2712 * frequency to 50Mhz
2713 * 0xe1 - Base clock frequency
2714 * 0x32 - 50Mhz new clock frequency
2715 * 0xf9 - Key register for 0x150
2716 * 0xfc - key register for 0xe1
2718 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
2719 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
2720 pci_write_config_byte(dev, 0xf9, 0xfc);
2721 pci_write_config_byte(dev, 0x150, 0x10);
2722 pci_write_config_byte(dev, 0xf9, 0x00);
2723 pci_write_config_byte(dev, 0xfc, 0x01);
2724 pci_write_config_byte(dev, 0xe1, 0x32);
2725 pci_write_config_byte(dev, 0xfc, 0x00);
2727 dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n");
2730 pci_read_config_byte(dev, 0xCB, &disable);
2735 pci_read_config_byte(dev, 0xCA, &write_enable);
2736 pci_write_config_byte(dev, 0xCA, 0x57);
2737 pci_write_config_byte(dev, 0xCB, disable | 0x02);
2738 pci_write_config_byte(dev, 0xCA, write_enable);
2740 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2741 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2744 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2745 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2746 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2747 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2748 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2749 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2750 #endif /*CONFIG_MMC_RICOH_MMC*/
2752 #ifdef CONFIG_DMAR_TABLE
2753 #define VTUNCERRMSK_REG 0x1ac
2754 #define VTD_MSK_SPEC_ERRORS (1 << 31)
2756 * This is a quirk for masking vt-d spec defined errors to platform error
2757 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
2758 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
2759 * on the RAS config settings of the platform) when a vt-d fault happens.
2760 * The resulting SMI caused the system to hang.
2762 * VT-d spec related errors are already handled by the VT-d OS code, so no
2763 * need to report the same error through other channels.
2765 static void vtd_mask_spec_errors(struct pci_dev *dev)
2769 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
2770 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
2772 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
2773 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
2776 static void fixup_ti816x_class(struct pci_dev *dev)
2778 /* TI 816x devices do not have class code set when in PCIe boot mode */
2779 dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n");
2780 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
2782 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
2783 PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class);
2785 /* Some PCIe devices do not work reliably with the claimed maximum
2786 * payload size supported.
2788 static void fixup_mpss_256(struct pci_dev *dev)
2790 dev->pcie_mpss = 1; /* 256 bytes */
2792 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
2793 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
2794 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
2795 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
2796 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
2797 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
2799 /* Intel 5000 and 5100 Memory controllers have an errata with read completion
2800 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
2801 * Since there is no way of knowing what the PCIE MPS on each fabric will be
2802 * until all of the devices are discovered and buses walked, read completion
2803 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
2804 * it is possible to hotplug a device with MPS of 256B.
2806 static void quirk_intel_mc_errata(struct pci_dev *dev)
2811 if (pcie_bus_config == PCIE_BUS_TUNE_OFF)
2814 /* Intel errata specifies bits to change but does not say what they are.
2815 * Keeping them magical until such time as the registers and values can
2818 err = pci_read_config_word(dev, 0x48, &rcc);
2820 dev_err(&dev->dev, "Error attempting to read the read "
2821 "completion coalescing register.\n");
2825 if (!(rcc & (1 << 10)))
2830 err = pci_write_config_word(dev, 0x48, rcc);
2832 dev_err(&dev->dev, "Error attempting to write the read "
2833 "completion coalescing register.\n");
2837 pr_info_once("Read completion coalescing disabled due to hardware "
2838 "errata relating to 256B MPS.\n");
2840 /* Intel 5000 series memory controllers and ports 2-7 */
2841 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
2842 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
2843 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
2844 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
2845 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
2846 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
2847 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
2848 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
2849 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
2850 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
2851 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
2852 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
2853 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
2854 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
2855 /* Intel 5100 series memory controllers and ports 2-7 */
2856 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
2857 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
2858 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
2859 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
2860 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
2861 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
2862 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
2863 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
2864 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
2865 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
2866 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
2870 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To
2871 * work around this, query the size it should be configured to by the device and
2872 * modify the resource end to correspond to this new size.
2874 static void quirk_intel_ntb(struct pci_dev *dev)
2879 rc = pci_read_config_byte(dev, 0x00D0, &val);
2883 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
2885 rc = pci_read_config_byte(dev, 0x00D1, &val);
2889 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
2891 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
2892 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
2894 static ktime_t fixup_debug_start(struct pci_dev *dev,
2895 void (*fn)(struct pci_dev *dev))
2897 ktime_t calltime = ktime_set(0, 0);
2899 dev_dbg(&dev->dev, "calling %pF\n", fn);
2900 if (initcall_debug) {
2901 pr_debug("calling %pF @ %i for %s\n",
2902 fn, task_pid_nr(current), dev_name(&dev->dev));
2903 calltime = ktime_get();
2909 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
2910 void (*fn)(struct pci_dev *dev))
2912 ktime_t delta, rettime;
2913 unsigned long long duration;
2915 if (initcall_debug) {
2916 rettime = ktime_get();
2917 delta = ktime_sub(rettime, calltime);
2918 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2919 pr_debug("pci fixup %pF returned after %lld usecs for %s\n",
2920 fn, duration, dev_name(&dev->dev));
2925 * Some BIOS implementations leave the Intel GPU interrupts enabled,
2926 * even though no one is handling them (f.e. i915 driver is never loaded).
2927 * Additionally the interrupt destination is not set up properly
2928 * and the interrupt ends up -somewhere-.
2930 * These spurious interrupts are "sticky" and the kernel disables
2931 * the (shared) interrupt line after 100.000+ generated interrupts.
2933 * Fix it by disabling the still enabled interrupts.
2934 * This resolves crashes often seen on monitor unplug.
2936 #define I915_DEIER_REG 0x4400c
2937 static void disable_igfx_irq(struct pci_dev *dev)
2939 void __iomem *regs = pci_iomap(dev, 0, 0);
2941 dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n");
2945 /* Check if any interrupt line is still enabled */
2946 if (readl(regs + I915_DEIER_REG) != 0) {
2947 dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; "
2950 writel(0, regs + I915_DEIER_REG);
2953 pci_iounmap(dev, regs);
2955 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
2956 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
2959 * PCI devices which are on Intel chips can skip the 10ms delay
2960 * before entering D3 mode.
2962 static void quirk_remove_d3_delay(struct pci_dev *dev)
2966 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
2967 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
2968 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
2969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
2970 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
2971 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
2972 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
2973 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
2974 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
2975 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
2976 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
2977 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
2978 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
2979 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
2982 * Some devices may pass our check in pci_intx_mask_supported if
2983 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
2984 * support this feature.
2986 static void quirk_broken_intx_masking(struct pci_dev *dev)
2988 dev->broken_intx_masking = 1;
2990 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, 0x0030,
2991 quirk_broken_intx_masking);
2992 DECLARE_PCI_FIXUP_HEADER(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
2993 quirk_broken_intx_masking);
2995 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2996 struct pci_fixup *end)
3000 for (; f < end; f++)
3001 if ((f->class == (u32) (dev->class >> f->class_shift) ||
3002 f->class == (u32) PCI_ANY_ID) &&
3003 (f->vendor == dev->vendor ||
3004 f->vendor == (u16) PCI_ANY_ID) &&
3005 (f->device == dev->device ||
3006 f->device == (u16) PCI_ANY_ID)) {
3007 calltime = fixup_debug_start(dev, f->hook);
3009 fixup_debug_report(dev, calltime, f->hook);
3013 extern struct pci_fixup __start_pci_fixups_early[];
3014 extern struct pci_fixup __end_pci_fixups_early[];
3015 extern struct pci_fixup __start_pci_fixups_header[];
3016 extern struct pci_fixup __end_pci_fixups_header[];
3017 extern struct pci_fixup __start_pci_fixups_final[];
3018 extern struct pci_fixup __end_pci_fixups_final[];
3019 extern struct pci_fixup __start_pci_fixups_enable[];
3020 extern struct pci_fixup __end_pci_fixups_enable[];
3021 extern struct pci_fixup __start_pci_fixups_resume[];
3022 extern struct pci_fixup __end_pci_fixups_resume[];
3023 extern struct pci_fixup __start_pci_fixups_resume_early[];
3024 extern struct pci_fixup __end_pci_fixups_resume_early[];
3025 extern struct pci_fixup __start_pci_fixups_suspend[];
3026 extern struct pci_fixup __end_pci_fixups_suspend[];
3028 static bool pci_apply_fixup_final_quirks;
3030 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
3032 struct pci_fixup *start, *end;
3035 case pci_fixup_early:
3036 start = __start_pci_fixups_early;
3037 end = __end_pci_fixups_early;
3040 case pci_fixup_header:
3041 start = __start_pci_fixups_header;
3042 end = __end_pci_fixups_header;
3045 case pci_fixup_final:
3046 if (!pci_apply_fixup_final_quirks)
3048 start = __start_pci_fixups_final;
3049 end = __end_pci_fixups_final;
3052 case pci_fixup_enable:
3053 start = __start_pci_fixups_enable;
3054 end = __end_pci_fixups_enable;
3057 case pci_fixup_resume:
3058 start = __start_pci_fixups_resume;
3059 end = __end_pci_fixups_resume;
3062 case pci_fixup_resume_early:
3063 start = __start_pci_fixups_resume_early;
3064 end = __end_pci_fixups_resume_early;
3067 case pci_fixup_suspend:
3068 start = __start_pci_fixups_suspend;
3069 end = __end_pci_fixups_suspend;
3073 /* stupid compiler warning, you would think with an enum... */
3076 pci_do_fixups(dev, start, end);
3078 EXPORT_SYMBOL(pci_fixup_device);
3081 static int __init pci_apply_final_quirks(void)
3083 struct pci_dev *dev = NULL;
3087 if (pci_cache_line_size)
3088 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
3089 pci_cache_line_size << 2);
3091 pci_apply_fixup_final_quirks = true;
3092 for_each_pci_dev(dev) {
3093 pci_fixup_device(pci_fixup_final, dev);
3095 * If arch hasn't set it explicitly yet, use the CLS
3096 * value shared by all PCI devices. If there's a
3097 * mismatch, fall back to the default value.
3099 if (!pci_cache_line_size) {
3100 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
3103 if (!tmp || cls == tmp)
3106 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), "
3107 "using %u bytes\n", cls << 2, tmp << 2,
3108 pci_dfl_cache_line_size << 2);
3109 pci_cache_line_size = pci_dfl_cache_line_size;
3113 if (!pci_cache_line_size) {
3114 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
3115 cls << 2, pci_dfl_cache_line_size << 2);
3116 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
3122 fs_initcall_sync(pci_apply_final_quirks);
3125 * Followings are device-specific reset methods which can be used to
3126 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3129 static int reset_intel_generic_dev(struct pci_dev *dev, int probe)
3133 /* only implement PCI_CLASS_SERIAL_USB at present */
3134 if (dev->class == PCI_CLASS_SERIAL_USB) {
3135 pos = pci_find_capability(dev, PCI_CAP_ID_VNDR);
3142 pci_write_config_byte(dev, pos + 0x4, 1);
3151 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3154 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3156 * The 82599 supports FLR on VFs, but FLR support is reported only
3157 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3158 * Therefore, we can't use pcie_flr(), which checks the VF DEVCAP.
3164 if (!pci_wait_for_pending_transaction(dev))
3165 dev_err(&dev->dev, "transaction is not cleared; proceeding with reset anyway\n");
3167 pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
3174 #include "../gpu/drm/i915/i915_reg.h"
3175 #define MSG_CTL 0x45010
3176 #define NSDE_PWR_STATE 0xd0100
3177 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3179 static int reset_ivb_igd(struct pci_dev *dev, int probe)
3181 void __iomem *mmio_base;
3182 unsigned long timeout;
3188 mmio_base = pci_iomap(dev, 0, 0);
3192 iowrite32(0x00000002, mmio_base + MSG_CTL);
3195 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3196 * driver loaded sets the right bits. However, this's a reset and
3197 * the bits have been set by i915 previously, so we clobber
3198 * SOUTH_CHICKEN2 register directly here.
3200 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3202 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3203 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3205 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3207 val = ioread32(mmio_base + PCH_PP_STATUS);
3208 if ((val & 0xb0000000) == 0)
3209 goto reset_complete;
3211 } while (time_before(jiffies, timeout));
3212 dev_warn(&dev->dev, "timeout during reset\n");
3215 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3217 pci_iounmap(dev, mmio_base);
3222 * Device-specific reset method for Chelsio T4-based adapters.
3224 static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3230 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3231 * that we have no device-specific reset method.
3233 if ((dev->device & 0xf000) != 0x4000)
3237 * If this is the "probe" phase, return 0 indicating that we can
3238 * reset this device.
3244 * T4 can wedge if there are DMAs in flight within the chip and Bus
3245 * Master has been disabled. We need to have it on till the Function
3246 * Level Reset completes. (BUS_MASTER is disabled in
3247 * pci_reset_function()).
3249 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3250 pci_write_config_word(dev, PCI_COMMAND,
3251 old_command | PCI_COMMAND_MASTER);
3254 * Perform the actual device function reset, saving and restoring
3255 * configuration information around the reset.
3257 pci_save_state(dev);
3260 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3261 * are disabled when an MSI-X interrupt message needs to be delivered.
3262 * So we briefly re-enable MSI-X interrupts for the duration of the
3263 * FLR. The pci_restore_state() below will restore the original
3266 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3267 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3268 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3270 PCI_MSIX_FLAGS_ENABLE |
3271 PCI_MSIX_FLAGS_MASKALL);
3274 * Start of pcie_flr() code sequence. This reset code is a copy of
3275 * the guts of pcie_flr() because that's not an exported function.
3278 if (!pci_wait_for_pending_transaction(dev))
3279 dev_err(&dev->dev, "transaction is not cleared; proceeding with reset anyway\n");
3281 pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
3285 * End of pcie_flr() code sequence.
3289 * Restore the configuration information (BAR values, etc.) including
3290 * the original PCI Configuration Space Command word, and return
3293 pci_restore_state(dev);
3294 pci_write_config_word(dev, PCI_COMMAND, old_command);
3298 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3299 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3300 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3302 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
3303 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
3304 reset_intel_82599_sfp_virtfn },
3305 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
3307 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
3309 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
3310 reset_intel_generic_dev },
3311 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3312 reset_chelsio_generic_dev },
3317 * These device-specific reset methods are here rather than in a driver
3318 * because when a host assigns a device to a guest VM, the host may need
3319 * to reset the device but probably doesn't have a driver for it.
3321 int pci_dev_specific_reset(struct pci_dev *dev, int probe)
3323 const struct pci_dev_reset_methods *i;
3325 for (i = pci_dev_reset_methods; i->reset; i++) {
3326 if ((i->vendor == dev->vendor ||
3327 i->vendor == (u16)PCI_ANY_ID) &&
3328 (i->device == dev->device ||
3329 i->device == (u16)PCI_ANY_ID))
3330 return i->reset(dev, probe);
3336 static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev)
3338 if (!PCI_FUNC(dev->devfn))
3339 return pci_dev_get(dev);
3341 return pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
3344 static const struct pci_dev_dma_source {
3347 struct pci_dev *(*dma_source)(struct pci_dev *dev);
3348 } pci_dev_dma_source[] = {
3350 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3352 * Some Ricoh devices use the function 0 source ID for DMA on
3353 * other functions of a multifunction device. The DMA devices
3354 * is therefore function 0, which will have implications of the
3355 * iommu grouping of these devices.
3357 { PCI_VENDOR_ID_RICOH, 0xe822, pci_func_0_dma_source },
3358 { PCI_VENDOR_ID_RICOH, 0xe230, pci_func_0_dma_source },
3359 { PCI_VENDOR_ID_RICOH, 0xe832, pci_func_0_dma_source },
3360 { PCI_VENDOR_ID_RICOH, 0xe476, pci_func_0_dma_source },
3365 * IOMMUs with isolation capabilities need to be programmed with the
3366 * correct source ID of a device. In most cases, the source ID matches
3367 * the device doing the DMA, but sometimes hardware is broken and will
3368 * tag the DMA as being sourced from a different device. This function
3369 * allows that translation. Note that the reference count of the
3370 * returned device is incremented on all paths.
3372 struct pci_dev *pci_get_dma_source(struct pci_dev *dev)
3374 const struct pci_dev_dma_source *i;
3376 for (i = pci_dev_dma_source; i->dma_source; i++) {
3377 if ((i->vendor == dev->vendor ||
3378 i->vendor == (u16)PCI_ANY_ID) &&
3379 (i->device == dev->device ||
3380 i->device == (u16)PCI_ANY_ID))
3381 return i->dma_source(dev);
3384 return pci_dev_get(dev);
3388 * AMD has indicated that the devices below do not support peer-to-peer
3389 * in any system where they are found in the southbridge with an AMD
3390 * IOMMU in the system. Multifunction devices that do not support
3391 * peer-to-peer between functions can claim to support a subset of ACS.
3392 * Such devices effectively enable request redirect (RR) and completion
3393 * redirect (CR) since all transactions are redirected to the upstream
3396 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
3397 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
3398 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
3400 * 1002:4385 SBx00 SMBus Controller
3401 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
3402 * 1002:4383 SBx00 Azalia (Intel HDA)
3403 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
3404 * 1002:4384 SBx00 PCI to PCI Bridge
3405 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
3407 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
3410 struct acpi_table_header *header = NULL;
3413 /* Targeting multifunction devices on the SB (appears on root bus) */
3414 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
3417 /* The IVRS table describes the AMD IOMMU */
3418 status = acpi_get_table("IVRS", 0, &header);
3419 if (ACPI_FAILURE(status))
3422 /* Filter out flags not applicable to multifunction */
3423 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
3425 return acs_flags & ~(PCI_ACS_RR | PCI_ACS_CR) ? 0 : 1;
3432 * Many Intel PCH root ports do provide ACS-like features to disable peer
3433 * transactions and validate bus numbers in requests, but do not provide an
3434 * actual PCIe ACS capability. This is the list of device IDs known to fall
3435 * into that category as provided by Intel in Red Hat bugzilla 1037684.
3437 static const u16 pci_quirk_intel_pch_acs_ids[] = {
3439 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
3440 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
3441 /* Cougarpoint PCH */
3442 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
3443 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
3444 /* Pantherpoint PCH */
3445 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
3446 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
3447 /* Lynxpoint-H PCH */
3448 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
3449 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
3450 /* Lynxpoint-LP PCH */
3451 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
3452 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
3454 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
3455 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
3458 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
3462 /* Filter out a few obvious non-matches first */
3463 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
3466 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
3467 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
3473 #define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
3475 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
3477 u16 flags = dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK ?
3478 INTEL_PCH_ACS_FLAGS : 0;
3480 if (!pci_quirk_intel_pch_acs_match(dev))
3483 return acs_flags & ~flags ? 0 : 1;
3486 static const struct pci_dev_acs_enabled {
3489 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
3490 } pci_dev_acs_enabled[] = {
3491 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
3492 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
3493 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
3494 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
3495 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
3496 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
3497 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
3501 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
3503 const struct pci_dev_acs_enabled *i;
3507 * Allow devices that do not expose standard PCIe ACS capabilities
3508 * or control to indicate their support here. Multi-function express
3509 * devices which do not allow internal peer-to-peer between functions,
3510 * but do not implement PCIe ACS may wish to return true here.
3512 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
3513 if ((i->vendor == dev->vendor ||
3514 i->vendor == (u16)PCI_ANY_ID) &&
3515 (i->device == dev->device ||
3516 i->device == (u16)PCI_ANY_ID)) {
3517 ret = i->acs_enabled(dev, acs_flags);
3526 /* Config space offset of Root Complex Base Address register */
3527 #define INTEL_LPC_RCBA_REG 0xf0
3528 /* 31:14 RCBA address */
3529 #define INTEL_LPC_RCBA_MASK 0xffffc000
3531 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
3533 /* Backbone Scratch Pad Register */
3534 #define INTEL_BSPR_REG 0x1104
3535 /* Backbone Peer Non-Posted Disable */
3536 #define INTEL_BSPR_REG_BPNPD (1 << 8)
3537 /* Backbone Peer Posted Disable */
3538 #define INTEL_BSPR_REG_BPPD (1 << 9)
3540 /* Upstream Peer Decode Configuration Register */
3541 #define INTEL_UPDCR_REG 0x1114
3542 /* 5:0 Peer Decode Enable bits */
3543 #define INTEL_UPDCR_REG_MASK 0x3f
3545 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
3547 u32 rcba, bspr, updcr;
3548 void __iomem *rcba_mem;
3551 * Read the RCBA register from the LPC (D31:F0). PCH root ports
3552 * are D28:F* and therefore get probed before LPC, thus we can't
3553 * use pci_get_slot/pci_read_config_dword here.
3555 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
3556 INTEL_LPC_RCBA_REG, &rcba);
3557 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
3560 rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
3561 PAGE_ALIGN(INTEL_UPDCR_REG));
3566 * The BSPR can disallow peer cycles, but it's set by soft strap and
3567 * therefore read-only. If both posted and non-posted peer cycles are
3568 * disallowed, we're ok. If either are allowed, then we need to use
3569 * the UPDCR to disable peer decodes for each port. This provides the
3570 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
3572 bspr = readl(rcba_mem + INTEL_BSPR_REG);
3573 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
3574 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
3575 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
3576 if (updcr & INTEL_UPDCR_REG_MASK) {
3577 dev_info(&dev->dev, "Disabling UPDCR peer decodes\n");
3578 updcr &= ~INTEL_UPDCR_REG_MASK;
3579 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
3587 /* Miscellaneous Port Configuration register */
3588 #define INTEL_MPC_REG 0xd8
3589 /* MPC: Invalid Receive Bus Number Check Enable */
3590 #define INTEL_MPC_REG_IRBNCE (1 << 26)
3592 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
3597 * When enabled, the IRBNCE bit of the MPC register enables the
3598 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
3599 * ensures that requester IDs fall within the bus number range
3600 * of the bridge. Enable if not already.
3602 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
3603 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
3604 dev_info(&dev->dev, "Enabling MPC IRBNCE\n");
3605 mpc |= INTEL_MPC_REG_IRBNCE;
3606 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
3610 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
3612 if (!pci_quirk_intel_pch_acs_match(dev))
3615 if (pci_quirk_enable_intel_lpc_acs(dev)) {
3616 dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n");
3620 pci_quirk_enable_intel_rp_mpc_acs(dev);
3622 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
3624 dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n");
3629 static const struct pci_dev_enable_acs {
3632 int (*enable_acs)(struct pci_dev *dev);
3633 } pci_dev_enable_acs[] = {
3634 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_pch_acs },
3638 void pci_dev_specific_enable_acs(struct pci_dev *dev)
3640 const struct pci_dev_enable_acs *i;
3643 for (i = pci_dev_enable_acs; i->enable_acs; i++) {
3644 if ((i->vendor == dev->vendor ||
3645 i->vendor == (u16)PCI_ANY_ID) &&
3646 (i->device == dev->device ||
3647 i->device == (u16)PCI_ANY_ID)) {
3648 ret = i->enable_acs(dev);