1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains work-arounds for many known PCI hardware
4 * bugs. Devices present only on certain architectures (host
5 * bridges et cetera) should be handled in arch-specific code.
7 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
9 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
11 * Init/reset quirks for USB host controllers should be in the
12 * USB quirks file, where their drivers can access reuse it.
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/export.h>
18 #include <linux/pci.h>
19 #include <linux/init.h>
20 #include <linux/delay.h>
21 #include <linux/acpi.h>
22 #include <linux/kallsyms.h>
23 #include <linux/dmi.h>
24 #include <linux/pci-aspm.h>
25 #include <linux/ioport.h>
26 #include <linux/sched.h>
27 #include <linux/ktime.h>
29 #include <linux/platform_data/x86/apple.h>
30 #include <linux/pm_runtime.h>
31 #include <asm/dma.h> /* isa_dma_bridge_buggy */
35 * Decoding should be disabled for a PCI device during BAR sizing to avoid
36 * conflict. But doing so may cause problems on host bridge and perhaps other
37 * key system devices. For devices that need to have mmio decoding always-on,
38 * we need to set the dev->mmio_always_on bit.
40 static void quirk_mmio_always_on(struct pci_dev *dev)
42 dev->mmio_always_on = 1;
44 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
45 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
47 /* The Mellanox Tavor device gives false positive parity errors
48 * Mark this device with a broken_parity_status, to allow
49 * PCI scanning code to "skip" this now blacklisted device.
51 static void quirk_mellanox_tavor(struct pci_dev *dev)
53 dev->broken_parity_status = 1; /* This device gives false positives */
55 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, quirk_mellanox_tavor);
56 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, quirk_mellanox_tavor);
58 /* Deal with broken BIOSes that neglect to enable passive release,
59 which can cause problems in combination with the 82441FX/PPro MTRRs */
60 static void quirk_passive_release(struct pci_dev *dev)
62 struct pci_dev *d = NULL;
65 /* We have to make sure a particular bit is set in the PIIX3
66 ISA bridge, so we have to go out and find it. */
67 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
68 pci_read_config_byte(d, 0x82, &dlc);
70 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
72 pci_write_config_byte(d, 0x82, dlc);
76 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
77 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
79 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
80 but VIA don't answer queries. If you happen to have good contacts at VIA
81 ask them for me please -- Alan
83 This appears to be BIOS not version dependent. So presumably there is a
86 static void quirk_isa_dma_hangs(struct pci_dev *dev)
88 if (!isa_dma_bridge_buggy) {
89 isa_dma_bridge_buggy = 1;
90 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
94 * Its not totally clear which chipsets are the problematic ones
95 * We know 82C586 and 82C596 variants are affected.
97 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
98 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
102 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
106 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
107 * for some HT machines to use C4 w/o hanging.
109 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
114 pci_read_config_dword(dev, 0x40, &pmbase);
115 pmbase = pmbase & 0xff80;
119 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
126 * Chipsets where PCI->PCI transfers vanish or hang
128 static void quirk_nopcipci(struct pci_dev *dev)
130 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
131 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
132 pci_pci_problems |= PCIPCI_FAIL;
135 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
136 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
138 static void quirk_nopciamd(struct pci_dev *dev)
141 pci_read_config_byte(dev, 0x08, &rev);
144 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
145 pci_pci_problems |= PCIAGP_FAIL;
148 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
151 * Triton requires workarounds to be used by the drivers
153 static void quirk_triton(struct pci_dev *dev)
155 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
156 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
157 pci_pci_problems |= PCIPCI_TRITON;
160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
166 * VIA Apollo KT133 needs PCI latency patch
167 * Made according to a windows driver based patch by George E. Breese
168 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
169 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
170 * the info on which Mr Breese based his work.
172 * Updated based on further information from the site and also on
173 * information provided by VIA
175 static void quirk_vialatency(struct pci_dev *dev)
179 /* Ok we have a potential problem chipset here. Now see if we have
180 a buggy southbridge */
182 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
184 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
185 /* Check for buggy part revisions */
186 if (p->revision < 0x40 || p->revision > 0x42)
189 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
190 if (p == NULL) /* No problem parts */
192 /* Check for buggy part revisions */
193 if (p->revision < 0x10 || p->revision > 0x12)
198 * Ok we have the problem. Now set the PCI master grant to
199 * occur every master grant. The apparent bug is that under high
200 * PCI load (quite common in Linux of course) you can get data
201 * loss when the CPU is held off the bus for 3 bus master requests
202 * This happens to include the IDE controllers....
204 * VIA only apply this fix when an SB Live! is present but under
205 * both Linux and Windows this isn't enough, and we have seen
206 * corruption without SB Live! but with things like 3 UDMA IDE
207 * controllers. So we ignore that bit of the VIA recommendation..
210 pci_read_config_byte(dev, 0x76, &busarb);
211 /* Set bit 4 and bi 5 of byte 76 to 0x01
212 "Master priority rotation on every PCI master grant */
215 pci_write_config_byte(dev, 0x76, busarb);
216 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
222 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
223 /* Must restore this on a resume from RAM */
224 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
225 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
226 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
229 * VIA Apollo VP3 needs ETBF on BT848/878
231 static void quirk_viaetbf(struct pci_dev *dev)
233 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
234 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
235 pci_pci_problems |= PCIPCI_VIAETBF;
238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
240 static void quirk_vsfx(struct pci_dev *dev)
242 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
243 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
244 pci_pci_problems |= PCIPCI_VSFX;
247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
250 * Ali Magik requires workarounds to be used by the drivers
251 * that DMA to AGP space. Latency must be set to 0xA and triton
252 * workaround applied too
253 * [Info kindly provided by ALi]
255 static void quirk_alimagik(struct pci_dev *dev)
257 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
258 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
259 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
263 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
266 * Natoma has some interesting boundary conditions with Zoran stuff
269 static void quirk_natoma(struct pci_dev *dev)
271 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
272 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
273 pci_pci_problems |= PCIPCI_NATOMA;
276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
278 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
280 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
284 * This chip can cause PCI parity errors if config register 0xA0 is read
285 * while DMAs are occurring.
287 static void quirk_citrine(struct pci_dev *dev)
289 dev->cfg_size = 0xA0;
291 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
294 * This chip can cause bus lockups if config addresses above 0x600
295 * are read or written.
297 static void quirk_nfp6000(struct pci_dev *dev)
299 dev->cfg_size = 0x600;
301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
302 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
305 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
306 static void quirk_extend_bar_to_page(struct pci_dev *dev)
310 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
311 struct resource *r = &dev->resource[i];
313 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
314 r->end = PAGE_SIZE - 1;
316 r->flags |= IORESOURCE_UNSET;
317 dev_info(&dev->dev, "expanded BAR %d to page size: %pR\n",
322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
325 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
326 * If it's needed, re-allocate the region.
328 static void quirk_s3_64M(struct pci_dev *dev)
330 struct resource *r = &dev->resource[0];
332 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
333 r->flags |= IORESOURCE_UNSET;
338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
341 static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
345 struct pci_bus_region bus_region;
346 struct resource *res = dev->resource + pos;
348 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
353 res->name = pci_name(dev);
354 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
356 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
357 region &= ~(size - 1);
359 /* Convert from PCI bus to resource space */
360 bus_region.start = region;
361 bus_region.end = region + size - 1;
362 pcibios_bus_to_resource(dev->bus, res, &bus_region);
364 dev_info(&dev->dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
365 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
369 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
370 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
371 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
372 * (which conflicts w/ BAR1's memory range).
374 * CS553x's ISA PCI BARs may also be read-only (ref:
375 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
377 static void quirk_cs5536_vsa(struct pci_dev *dev)
379 static char *name = "CS5536 ISA bridge";
381 if (pci_resource_len(dev, 0) != 8) {
382 quirk_io(dev, 0, 8, name); /* SMB */
383 quirk_io(dev, 1, 256, name); /* GPIO */
384 quirk_io(dev, 2, 64, name); /* MFGPT */
385 dev_info(&dev->dev, "%s bug detected (incorrect header); workaround applied\n",
389 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
391 static void quirk_io_region(struct pci_dev *dev, int port,
392 unsigned size, int nr, const char *name)
395 struct pci_bus_region bus_region;
396 struct resource *res = dev->resource + nr;
398 pci_read_config_word(dev, port, ®ion);
399 region &= ~(size - 1);
404 res->name = pci_name(dev);
405 res->flags = IORESOURCE_IO;
407 /* Convert from PCI bus to resource space */
408 bus_region.start = region;
409 bus_region.end = region + size - 1;
410 pcibios_bus_to_resource(dev->bus, res, &bus_region);
412 if (!pci_claim_resource(dev, nr))
413 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
417 * ATI Northbridge setups MCE the processor if you even
418 * read somewhere between 0x3b0->0x3bb or read 0x3d3
420 static void quirk_ati_exploding_mce(struct pci_dev *dev)
422 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
423 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
424 request_region(0x3b0, 0x0C, "RadeonIGP");
425 request_region(0x3d3, 0x01, "RadeonIGP");
427 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
430 * In the AMD NL platform, this device ([1022:7912]) has a class code of
431 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
432 * claim it. The same applies on the VanGogh platform device ([1022:163a]).
434 * But the dwc3 driver is a more specific driver for this device, and we'd
435 * prefer to use it instead of xhci. To prevent xhci from claiming the
436 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
437 * defines as "USB device (not host controller)". The dwc3 driver can then
438 * claim it based on its Vendor and Device ID.
440 static void quirk_amd_dwc_class(struct pci_dev *pdev)
442 u32 class = pdev->class;
444 /* Use "USB Device (not host controller)" class */
445 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
446 dev_info(&pdev->dev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
449 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
450 quirk_amd_dwc_class);
451 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VANGOGH_USB,
452 quirk_amd_dwc_class);
455 * Let's make the southbridge information explicit instead
456 * of having to worry about people probing the ACPI areas,
457 * for example.. (Yes, it happens, and if you read the wrong
458 * ACPI register it will put the machine to sleep with no
459 * way of waking it up again. Bummer).
461 * ALI M7101: Two IO regions pointed to by words at
462 * 0xE0 (64 bytes of ACPI registers)
463 * 0xE2 (32 bytes of SMB registers)
465 static void quirk_ali7101_acpi(struct pci_dev *dev)
467 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
468 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
470 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
472 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
475 u32 mask, size, base;
477 pci_read_config_dword(dev, port, &devres);
478 if ((devres & enable) != enable)
480 mask = (devres >> 16) & 15;
481 base = devres & 0xffff;
484 unsigned bit = size >> 1;
485 if ((bit & mask) == bit)
490 * For now we only print it out. Eventually we'll want to
491 * reserve it (at least if it's in the 0x1000+ range), but
492 * let's get enough confirmation reports first.
495 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base,
499 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
502 u32 mask, size, base;
504 pci_read_config_dword(dev, port, &devres);
505 if ((devres & enable) != enable)
507 base = devres & 0xffff0000;
508 mask = (devres & 0x3f) << 16;
511 unsigned bit = size >> 1;
512 if ((bit & mask) == bit)
517 * For now we only print it out. Eventually we'll want to
518 * reserve it, but let's get enough confirmation reports first.
521 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base,
526 * PIIX4 ACPI: Two IO regions pointed to by longwords at
527 * 0x40 (64 bytes of ACPI registers)
528 * 0x90 (16 bytes of SMB registers)
529 * and a few strange programmable PIIX4 device resources.
531 static void quirk_piix4_acpi(struct pci_dev *dev)
535 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
536 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
538 /* Device resource A has enables for some of the other ones */
539 pci_read_config_dword(dev, 0x5c, &res_a);
541 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
542 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
544 /* Device resource D is just bitfields for static resources */
546 /* Device 12 enabled? */
547 if (res_a & (1 << 29)) {
548 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
549 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
551 /* Device 13 enabled? */
552 if (res_a & (1 << 30)) {
553 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
554 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
556 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
557 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
559 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
560 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
562 #define ICH_PMBASE 0x40
563 #define ICH_ACPI_CNTL 0x44
564 #define ICH4_ACPI_EN 0x10
565 #define ICH6_ACPI_EN 0x80
566 #define ICH4_GPIOBASE 0x58
567 #define ICH4_GPIO_CNTL 0x5c
568 #define ICH4_GPIO_EN 0x10
569 #define ICH6_GPIOBASE 0x48
570 #define ICH6_GPIO_CNTL 0x4c
571 #define ICH6_GPIO_EN 0x10
574 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
575 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
576 * 0x58 (64 bytes of GPIO I/O space)
578 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
583 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
584 * with low legacy (and fixed) ports. We don't know the decoding
585 * priority and can't tell whether the legacy device or the one created
586 * here is really at that address. This happens on boards with broken
590 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
591 if (enable & ICH4_ACPI_EN)
592 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
593 "ICH4 ACPI/GPIO/TCO");
595 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
596 if (enable & ICH4_GPIO_EN)
597 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
600 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
611 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
615 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
616 if (enable & ICH6_ACPI_EN)
617 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
618 "ICH6 ACPI/GPIO/TCO");
620 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
621 if (enable & ICH6_GPIO_EN)
622 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
626 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
631 pci_read_config_dword(dev, reg, &val);
639 * This is not correct. It is 16, 32 or 64 bytes depending on
640 * register D31:F0:ADh bits 5:4.
642 * But this gets us at least _part_ of it.
650 /* Just print it out for now. We should reserve it after more debugging */
651 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
654 static void quirk_ich6_lpc(struct pci_dev *dev)
656 /* Shared ACPI/GPIO decode with all ICH6+ */
657 ich6_lpc_acpi_gpio(dev);
659 /* ICH6-specific generic IO decode */
660 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
661 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
663 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
664 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
666 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
671 pci_read_config_dword(dev, reg, &val);
678 * IO base in bits 15:2, mask in bits 23:18, both
682 mask = (val >> 16) & 0xfc;
685 /* Just print it out for now. We should reserve it after more debugging */
686 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
689 /* ICH7-10 has the same common LPC generic IO decode registers */
690 static void quirk_ich7_lpc(struct pci_dev *dev)
692 /* We share the common ACPI/GPIO decode with ICH6 */
693 ich6_lpc_acpi_gpio(dev);
695 /* And have 4 ICH7+ generic decodes */
696 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
697 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
698 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
699 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
701 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
702 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
704 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
705 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
706 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
707 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
708 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
709 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
710 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
711 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
712 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
713 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
716 * VIA ACPI: One IO region pointed to by longword at
717 * 0x48 or 0x20 (256 bytes of ACPI registers)
719 static void quirk_vt82c586_acpi(struct pci_dev *dev)
721 if (dev->revision & 0x10)
722 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
725 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
728 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
729 * 0x48 (256 bytes of ACPI registers)
730 * 0x70 (128 bytes of hardware monitoring register)
731 * 0x90 (16 bytes of SMB registers)
733 static void quirk_vt82c686_acpi(struct pci_dev *dev)
735 quirk_vt82c586_acpi(dev);
737 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
740 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
742 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
745 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
746 * 0x88 (128 bytes of power management registers)
747 * 0xd0 (16 bytes of SMB registers)
749 static void quirk_vt8235_acpi(struct pci_dev *dev)
751 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
752 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
754 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
757 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
758 * Disable fast back-to-back on the secondary bus segment
760 static void quirk_xio2000a(struct pci_dev *dev)
762 struct pci_dev *pdev;
765 dev_warn(&dev->dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
766 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
767 pci_read_config_word(pdev, PCI_COMMAND, &command);
768 if (command & PCI_COMMAND_FAST_BACK)
769 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
772 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
775 #ifdef CONFIG_X86_IO_APIC
777 #include <asm/io_apic.h>
780 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
781 * devices to the external APIC.
783 * TODO: When we have device-specific interrupt routers,
784 * this code will go away from quirks.
786 static void quirk_via_ioapic(struct pci_dev *dev)
791 tmp = 0; /* nothing routed to external APIC */
793 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
795 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
796 tmp == 0 ? "Disa" : "Ena");
798 /* Offset 0x58: External APIC IRQ output control */
799 pci_write_config_byte(dev, 0x58, tmp);
801 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
802 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
805 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
806 * This leads to doubled level interrupt rates.
807 * Set this bit to get rid of cycle wastage.
808 * Otherwise uncritical.
810 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
813 #define BYPASS_APIC_DEASSERT 8
815 pci_read_config_byte(dev, 0x5B, &misc_control2);
816 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
817 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
818 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
821 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
822 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
825 * The AMD io apic can hang the box when an apic irq is masked.
826 * We check all revs >= B0 (yet not in the pre production!) as the bug
827 * is currently marked NoFix
829 * We have multiple reports of hangs with this chipset that went away with
830 * noapic specified. For the moment we assume it's the erratum. We may be wrong
831 * of course. However the advice is demonstrably good even if so..
833 static void quirk_amd_ioapic(struct pci_dev *dev)
835 if (dev->revision >= 0x02) {
836 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
837 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
840 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
841 #endif /* CONFIG_X86_IO_APIC */
843 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
845 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
847 /* Fix for improper SRIOV configuration on Cavium cn88xx RNM device */
848 if (dev->subsystem_device == 0xa118)
849 dev->sriov->link = dev->devfn;
851 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
855 * Some settings of MMRBC can lead to data corruption so block changes.
856 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
858 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
860 if (dev->subordinate && dev->revision <= 0x12) {
861 dev_info(&dev->dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
863 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
866 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
869 * FIXME: it is questionable that quirk_via_acpi
870 * is needed. It shows up as an ISA bridge, and does not
871 * support the PCI_INTERRUPT_LINE register at all. Therefore
872 * it seems like setting the pci_dev's 'irq' to the
873 * value of the ACPI SCI interrupt is only done for convenience.
876 static void quirk_via_acpi(struct pci_dev *d)
879 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
882 pci_read_config_byte(d, 0x42, &irq);
884 if (irq && (irq != 2))
887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
888 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
892 * VIA bridges which have VLink
895 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
897 static void quirk_via_bridge(struct pci_dev *dev)
899 /* See what bridge we have and find the device ranges */
900 switch (dev->device) {
901 case PCI_DEVICE_ID_VIA_82C686:
902 /* The VT82C686 is special, it attaches to PCI and can have
903 any device number. All its subdevices are functions of
904 that single device. */
905 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
906 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
908 case PCI_DEVICE_ID_VIA_8237:
909 case PCI_DEVICE_ID_VIA_8237A:
910 via_vlink_dev_lo = 15;
912 case PCI_DEVICE_ID_VIA_8235:
913 via_vlink_dev_lo = 16;
915 case PCI_DEVICE_ID_VIA_8231:
916 case PCI_DEVICE_ID_VIA_8233_0:
917 case PCI_DEVICE_ID_VIA_8233A:
918 case PCI_DEVICE_ID_VIA_8233C_0:
919 via_vlink_dev_lo = 17;
923 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
924 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
925 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
926 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
927 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
928 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
929 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
930 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
933 * quirk_via_vlink - VIA VLink IRQ number update
936 * If the device we are dealing with is on a PIC IRQ we need to
937 * ensure that the IRQ line register which usually is not relevant
938 * for PCI cards, is actually written so that interrupts get sent
939 * to the right place.
940 * We only do this on systems where a VIA south bridge was detected,
941 * and only for VIA devices on the motherboard (see quirk_via_bridge
945 static void quirk_via_vlink(struct pci_dev *dev)
949 /* Check if we have VLink at all */
950 if (via_vlink_dev_lo == -1)
955 /* Don't quirk interrupts outside the legacy IRQ range */
956 if (!new_irq || new_irq > 15)
959 /* Internal device ? */
960 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
961 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
964 /* This is an internal VLink device on a PIC interrupt. The BIOS
965 ought to have set this but may not have, so we redo it */
967 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
968 if (new_irq != irq) {
969 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
971 udelay(15); /* unknown if delay really needed */
972 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
975 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
978 * VIA VT82C598 has its device ID settable and many BIOSes
979 * set it to the ID of VT82C597 for backward compatibility.
980 * We need to switch it off to be able to recognize the real
983 static void quirk_vt82c598_id(struct pci_dev *dev)
985 pci_write_config_byte(dev, 0xfc, 0);
986 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
988 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
991 * CardBus controllers have a legacy base address that enables them
992 * to respond as i82365 pcmcia controllers. We don't want them to
993 * do this even if the Linux CardBus driver is not loaded, because
994 * the Linux i82365 driver does not (and should not) handle CardBus.
996 static void quirk_cardbus_legacy(struct pci_dev *dev)
998 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1000 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1001 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1002 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1003 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1006 * Following the PCI ordering rules is optional on the AMD762. I'm not
1007 * sure what the designers were smoking but let's not inhale...
1009 * To be fair to AMD, it follows the spec by default, its BIOS people
1012 static void quirk_amd_ordering(struct pci_dev *dev)
1015 pci_read_config_dword(dev, 0x4C, &pcic);
1016 if ((pcic & 6) != 6) {
1018 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1019 pci_write_config_dword(dev, 0x4C, pcic);
1020 pci_read_config_dword(dev, 0x84, &pcic);
1021 pcic |= (1 << 23); /* Required in this mode */
1022 pci_write_config_dword(dev, 0x84, pcic);
1025 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1026 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1029 * DreamWorks provided workaround for Dunord I-3000 problem
1031 * This card decodes and responds to addresses not apparently
1032 * assigned to it. We force a larger allocation to ensure that
1033 * nothing gets put too close to it.
1035 static void quirk_dunord(struct pci_dev *dev)
1037 struct resource *r = &dev->resource[1];
1039 r->flags |= IORESOURCE_UNSET;
1043 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1046 * i82380FB mobile docking controller: its PCI-to-PCI bridge
1047 * is subtractive decoding (transparent), and does indicate this
1048 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
1051 static void quirk_transparent_bridge(struct pci_dev *dev)
1053 dev->transparent = 1;
1055 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1056 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1059 * Common misconfiguration of the MediaGX/Geode PCI master that will
1060 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
1061 * datasheets found at http://www.national.com/analog for info on what
1062 * these bits do. <christer@weinigel.se>
1064 static void quirk_mediagx_master(struct pci_dev *dev)
1068 pci_read_config_byte(dev, 0x41, ®);
1071 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1073 pci_write_config_byte(dev, 0x41, reg);
1076 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1077 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1080 * Ensure C0 rev restreaming is off. This is normally done by
1081 * the BIOS but in the odd case it is not the results are corruption
1082 * hence the presence of a Linux check
1084 static void quirk_disable_pxb(struct pci_dev *pdev)
1088 if (pdev->revision != 0x04) /* Only C0 requires this */
1090 pci_read_config_word(pdev, 0x40, &config);
1091 if (config & (1<<6)) {
1093 pci_write_config_word(pdev, 0x40, config);
1094 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
1097 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1098 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1100 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1102 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1105 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1107 pci_read_config_byte(pdev, 0x40, &tmp);
1108 pci_write_config_byte(pdev, 0x40, tmp|1);
1109 pci_write_config_byte(pdev, 0x9, 1);
1110 pci_write_config_byte(pdev, 0xa, 6);
1111 pci_write_config_byte(pdev, 0x40, tmp);
1113 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1114 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1118 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1120 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1121 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1122 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1124 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1127 * Serverworks CSB5 IDE does not fully support native mode
1129 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1132 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1136 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1137 /* PCI layer will sort out resources */
1140 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1143 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1145 static void quirk_ide_samemode(struct pci_dev *pdev)
1149 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1151 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1152 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1155 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1158 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1161 * Some ATA devices break if put into D3
1164 static void quirk_no_ata_d3(struct pci_dev *pdev)
1166 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1168 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1169 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1170 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1171 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1172 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1173 /* ALi loses some register settings that we cannot then restore */
1174 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1175 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1176 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1177 occur when mode detecting */
1178 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1179 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1181 /* This was originally an Alpha specific thing, but it really fits here.
1182 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1184 static void quirk_eisa_bridge(struct pci_dev *dev)
1186 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1188 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1192 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1193 * is not activated. The myth is that Asus said that they do not want the
1194 * users to be irritated by just another PCI Device in the Win98 device
1195 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1196 * package 2.7.0 for details)
1198 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1199 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1200 * becomes necessary to do this tweak in two steps -- the chosen trigger
1201 * is either the Host bridge (preferred) or on-board VGA controller.
1203 * Note that we used to unhide the SMBus that way on Toshiba laptops
1204 * (Satellite A40 and Tecra M2) but then found that the thermal management
1205 * was done by SMM code, which could cause unsynchronized concurrent
1206 * accesses to the SMBus registers, with potentially bad effects. Thus you
1207 * should be very careful when adding new entries: if SMM is accessing the
1208 * Intel SMBus, this is a very good reason to leave it hidden.
1210 * Likewise, many recent laptops use ACPI for thermal management. If the
1211 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1212 * natively, and keeping the SMBus hidden is the right thing to do. If you
1213 * are about to add an entry in the table below, please first disassemble
1214 * the DSDT and double-check that there is no code accessing the SMBus.
1216 static int asus_hides_smbus;
1218 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1220 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1221 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1222 switch (dev->subsystem_device) {
1223 case 0x8025: /* P4B-LX */
1224 case 0x8070: /* P4B */
1225 case 0x8088: /* P4B533 */
1226 case 0x1626: /* L3C notebook */
1227 asus_hides_smbus = 1;
1229 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1230 switch (dev->subsystem_device) {
1231 case 0x80b1: /* P4GE-V */
1232 case 0x80b2: /* P4PE */
1233 case 0x8093: /* P4B533-V */
1234 asus_hides_smbus = 1;
1236 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1237 switch (dev->subsystem_device) {
1238 case 0x8030: /* P4T533 */
1239 asus_hides_smbus = 1;
1241 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1242 switch (dev->subsystem_device) {
1243 case 0x8070: /* P4G8X Deluxe */
1244 asus_hides_smbus = 1;
1246 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1247 switch (dev->subsystem_device) {
1248 case 0x80c9: /* PU-DLS */
1249 asus_hides_smbus = 1;
1251 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1252 switch (dev->subsystem_device) {
1253 case 0x1751: /* M2N notebook */
1254 case 0x1821: /* M5N notebook */
1255 case 0x1897: /* A6L notebook */
1256 asus_hides_smbus = 1;
1258 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1259 switch (dev->subsystem_device) {
1260 case 0x184b: /* W1N notebook */
1261 case 0x186a: /* M6Ne notebook */
1262 asus_hides_smbus = 1;
1264 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1265 switch (dev->subsystem_device) {
1266 case 0x80f2: /* P4P800-X */
1267 asus_hides_smbus = 1;
1269 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1270 switch (dev->subsystem_device) {
1271 case 0x1882: /* M6V notebook */
1272 case 0x1977: /* A6VA notebook */
1273 asus_hides_smbus = 1;
1275 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1276 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1277 switch (dev->subsystem_device) {
1278 case 0x088C: /* HP Compaq nc8000 */
1279 case 0x0890: /* HP Compaq nc6000 */
1280 asus_hides_smbus = 1;
1282 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1283 switch (dev->subsystem_device) {
1284 case 0x12bc: /* HP D330L */
1285 case 0x12bd: /* HP D530 */
1286 case 0x006a: /* HP Compaq nx9500 */
1287 asus_hides_smbus = 1;
1289 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1290 switch (dev->subsystem_device) {
1291 case 0x12bf: /* HP xw4100 */
1292 asus_hides_smbus = 1;
1294 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1295 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1296 switch (dev->subsystem_device) {
1297 case 0xC00C: /* Samsung P35 notebook */
1298 asus_hides_smbus = 1;
1300 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1301 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1302 switch (dev->subsystem_device) {
1303 case 0x0058: /* Compaq Evo N620c */
1304 asus_hides_smbus = 1;
1306 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1307 switch (dev->subsystem_device) {
1308 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1309 /* Motherboard doesn't have Host bridge
1310 * subvendor/subdevice IDs, therefore checking
1311 * its on-board VGA controller */
1312 asus_hides_smbus = 1;
1314 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1315 switch (dev->subsystem_device) {
1316 case 0x00b8: /* Compaq Evo D510 CMT */
1317 case 0x00b9: /* Compaq Evo D510 SFF */
1318 case 0x00ba: /* Compaq Evo D510 USDT */
1319 /* Motherboard doesn't have Host bridge
1320 * subvendor/subdevice IDs and on-board VGA
1321 * controller is disabled if an AGP card is
1322 * inserted, therefore checking USB UHCI
1324 asus_hides_smbus = 1;
1326 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1327 switch (dev->subsystem_device) {
1328 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1329 /* Motherboard doesn't have host bridge
1330 * subvendor/subdevice IDs, therefore checking
1331 * its on-board VGA controller */
1332 asus_hides_smbus = 1;
1336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1342 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1347 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1348 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1349 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1351 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1355 if (likely(!asus_hides_smbus))
1358 pci_read_config_word(dev, 0xF2, &val);
1360 pci_write_config_word(dev, 0xF2, val & (~0x8));
1361 pci_read_config_word(dev, 0xF2, &val);
1363 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1366 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1370 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1371 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1372 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1373 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1374 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1375 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1376 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1377 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1378 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1379 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1380 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1381 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1382 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1384 /* It appears we just have one such device. If not, we have a warning */
1385 static void __iomem *asus_rcba_base;
1386 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1390 if (likely(!asus_hides_smbus))
1392 WARN_ON(asus_rcba_base);
1394 pci_read_config_dword(dev, 0xF0, &rcba);
1395 /* use bits 31:14, 16 kB aligned */
1396 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1397 if (asus_rcba_base == NULL)
1401 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1405 if (likely(!asus_hides_smbus || !asus_rcba_base))
1407 /* read the Function Disable register, dword mode only */
1408 val = readl(asus_rcba_base + 0x3418);
1409 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1412 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1414 if (likely(!asus_hides_smbus || !asus_rcba_base))
1416 iounmap(asus_rcba_base);
1417 asus_rcba_base = NULL;
1418 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1421 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1423 asus_hides_smbus_lpc_ich6_suspend(dev);
1424 asus_hides_smbus_lpc_ich6_resume_early(dev);
1425 asus_hides_smbus_lpc_ich6_resume(dev);
1427 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1428 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1429 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1430 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1433 * SiS 96x south bridge: BIOS typically hides SMBus device...
1435 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1438 pci_read_config_byte(dev, 0x77, &val);
1440 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1441 pci_write_config_byte(dev, 0x77, val & ~0x10);
1444 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1445 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1447 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1448 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1449 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1450 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1451 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1454 * ... This is further complicated by the fact that some SiS96x south
1455 * bridges pretend to be 85C503/5513 instead. In that case see if we
1456 * spotted a compatible north bridge to make sure.
1457 * (pci_find_device doesn't work yet)
1459 * We can also enable the sis96x bit in the discovery register..
1461 #define SIS_DETECT_REGISTER 0x40
1463 static void quirk_sis_503(struct pci_dev *dev)
1468 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1469 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1470 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1471 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1472 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1477 * Ok, it now shows up as a 96x.. run the 96x quirk by
1478 * hand in case it has already been processed.
1479 * (depends on link order, which is apparently not guaranteed)
1481 dev->device = devid;
1482 quirk_sis_96x_smbus(dev);
1484 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1485 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1489 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1490 * and MC97 modem controller are disabled when a second PCI soundcard is
1491 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1494 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1497 int asus_hides_ac97 = 0;
1499 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1500 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1501 asus_hides_ac97 = 1;
1504 if (!asus_hides_ac97)
1507 pci_read_config_byte(dev, 0x50, &val);
1509 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1510 pci_read_config_byte(dev, 0x50, &val);
1512 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1515 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1518 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1519 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1521 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1524 * If we are using libata we can drive this chip properly but must
1525 * do this early on to make the additional device appear during
1528 static void quirk_jmicron_ata(struct pci_dev *pdev)
1530 u32 conf1, conf5, class;
1533 /* Only poke fn 0 */
1534 if (PCI_FUNC(pdev->devfn))
1537 pci_read_config_dword(pdev, 0x40, &conf1);
1538 pci_read_config_dword(pdev, 0x80, &conf5);
1540 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1541 conf5 &= ~(1 << 24); /* Clear bit 24 */
1543 switch (pdev->device) {
1544 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1545 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1546 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1547 /* The controller should be in single function ahci mode */
1548 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1551 case PCI_DEVICE_ID_JMICRON_JMB365:
1552 case PCI_DEVICE_ID_JMICRON_JMB366:
1553 /* Redirect IDE second PATA port to the right spot */
1556 case PCI_DEVICE_ID_JMICRON_JMB361:
1557 case PCI_DEVICE_ID_JMICRON_JMB363:
1558 case PCI_DEVICE_ID_JMICRON_JMB369:
1559 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1560 /* Set the class codes correctly and then direct IDE 0 */
1561 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1564 case PCI_DEVICE_ID_JMICRON_JMB368:
1565 /* The controller should be in single function IDE mode */
1566 conf1 |= 0x00C00000; /* Set 22, 23 */
1570 pci_write_config_dword(pdev, 0x40, conf1);
1571 pci_write_config_dword(pdev, 0x80, conf5);
1573 /* Update pdev accordingly */
1574 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1575 pdev->hdr_type = hdr & 0x7f;
1576 pdev->multifunction = !!(hdr & 0x80);
1578 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1579 pdev->class = class >> 8;
1581 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1582 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1583 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1584 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1585 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1586 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1587 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1588 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1589 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1590 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1591 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1592 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1593 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1594 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1595 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1596 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1597 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1598 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1602 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1604 if (dev->multifunction) {
1605 device_disable_async_suspend(&dev->dev);
1606 dev_info(&dev->dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1609 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1610 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1611 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1612 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1614 #ifdef CONFIG_X86_IO_APIC
1615 static void quirk_alder_ioapic(struct pci_dev *pdev)
1619 if ((pdev->class >> 8) != 0xff00)
1622 /* the first BAR is the location of the IO APIC...we must
1623 * not touch this (and it's already covered by the fixmap), so
1624 * forcibly insert it into the resource tree */
1625 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1626 insert_resource(&iomem_resource, &pdev->resource[0]);
1628 /* The next five BARs all seem to be rubbish, so just clean
1630 for (i = 1; i < 6; i++)
1631 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1633 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1636 static void quirk_pcie_mch(struct pci_dev *pdev)
1640 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1641 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1642 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1644 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1647 * It's possible for the MSI to get corrupted if shpc and acpi
1648 * are used together on certain PXH-based systems.
1650 static void quirk_pcie_pxh(struct pci_dev *dev)
1653 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1655 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1656 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1657 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1658 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1659 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1662 * Some Intel PCI Express chipsets have trouble with downstream
1663 * device power management.
1665 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1667 pci_pm_d3_delay = 120;
1671 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1672 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1673 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1674 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1678 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1679 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1680 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1685 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1687 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1688 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1689 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1690 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1691 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1693 static void quirk_radeon_pm(struct pci_dev *dev)
1695 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1696 dev->subsystem_device == 0x00e2) {
1697 if (dev->d3_delay < 20) {
1699 dev_info(&dev->dev, "extending delay after power-on from D3 to %d msec\n",
1704 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1706 #ifdef CONFIG_X86_IO_APIC
1707 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1709 noioapicreroute = 1;
1710 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1715 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1717 * Systems to exclude from boot interrupt reroute quirks
1720 .callback = dmi_disable_ioapicreroute,
1721 .ident = "ASUSTek Computer INC. M2N-LR",
1723 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1724 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1731 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1732 * remap the original interrupt in the linux kernel to the boot interrupt, so
1733 * that a PCI device's interrupt handler is installed on the boot interrupt
1736 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1738 dmi_check_system(boot_interrupt_dmi_table);
1739 if (noioapicquirk || noioapicreroute)
1742 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1743 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1744 dev->vendor, dev->device);
1746 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1747 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1749 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1750 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1751 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1752 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1753 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1754 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1755 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1756 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1757 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1758 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1759 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1760 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1761 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1764 * On some chipsets we can disable the generation of legacy INTx boot
1769 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1770 * 300641-004US, section 5.7.3.
1772 #define INTEL_6300_IOAPIC_ABAR 0x40
1773 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1775 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1777 u16 pci_config_word;
1782 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1783 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1784 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1786 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1787 dev->vendor, dev->device);
1789 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1790 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1793 * disable boot interrupts on HT-1000
1795 #define BC_HT1000_FEATURE_REG 0x64
1796 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1797 #define BC_HT1000_MAP_IDX 0xC00
1798 #define BC_HT1000_MAP_DATA 0xC01
1800 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1802 u32 pci_config_dword;
1808 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1809 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1810 BC_HT1000_PIC_REGS_ENABLE);
1812 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1813 outb(irq, BC_HT1000_MAP_IDX);
1814 outb(0x00, BC_HT1000_MAP_DATA);
1817 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1819 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1820 dev->vendor, dev->device);
1822 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1823 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1826 * disable boot interrupts on AMD and ATI chipsets
1829 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1830 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1831 * (due to an erratum).
1833 #define AMD_813X_MISC 0x40
1834 #define AMD_813X_NOIOAMODE (1<<0)
1835 #define AMD_813X_REV_B1 0x12
1836 #define AMD_813X_REV_B2 0x13
1838 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1840 u32 pci_config_dword;
1844 if ((dev->revision == AMD_813X_REV_B1) ||
1845 (dev->revision == AMD_813X_REV_B2))
1848 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1849 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1850 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1852 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1853 dev->vendor, dev->device);
1855 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1856 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1857 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1858 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1860 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1862 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1864 u16 pci_config_word;
1869 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1870 if (!pci_config_word) {
1871 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] already disabled\n",
1872 dev->vendor, dev->device);
1875 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1876 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1877 dev->vendor, dev->device);
1879 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1880 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1881 #endif /* CONFIG_X86_IO_APIC */
1884 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1885 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1886 * Re-allocate the region if needed...
1888 static void quirk_tc86c001_ide(struct pci_dev *dev)
1890 struct resource *r = &dev->resource[0];
1892 if (r->start & 0x8) {
1893 r->flags |= IORESOURCE_UNSET;
1898 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1899 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1900 quirk_tc86c001_ide);
1903 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
1904 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
1905 * being read correctly if bit 7 of the base address is set.
1906 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
1907 * Re-allocate the regions to a 256-byte boundary if necessary.
1909 static void quirk_plx_pci9050(struct pci_dev *dev)
1913 /* Fixed in revision 2 (PCI 9052). */
1914 if (dev->revision >= 2)
1916 for (bar = 0; bar <= 1; bar++)
1917 if (pci_resource_len(dev, bar) == 0x80 &&
1918 (pci_resource_start(dev, bar) & 0x80)) {
1919 struct resource *r = &dev->resource[bar];
1920 dev_info(&dev->dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
1922 r->flags |= IORESOURCE_UNSET;
1927 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
1930 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
1931 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
1932 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
1933 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
1935 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
1938 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
1939 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
1941 static void quirk_netmos(struct pci_dev *dev)
1943 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1944 unsigned int num_serial = dev->subsystem_device & 0xf;
1947 * These Netmos parts are multiport serial devices with optional
1948 * parallel ports. Even when parallel ports are present, they
1949 * are identified as class SERIAL, which means the serial driver
1950 * will claim them. To prevent this, mark them as class OTHER.
1951 * These combo devices should be claimed by parport_serial.
1953 * The subdevice ID is of the form 0x00PS, where <P> is the number
1954 * of parallel ports and <S> is the number of serial ports.
1956 switch (dev->device) {
1957 case PCI_DEVICE_ID_NETMOS_9835:
1958 /* Well, this rule doesn't hold for the following 9835 device */
1959 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1960 dev->subsystem_device == 0x0299)
1962 case PCI_DEVICE_ID_NETMOS_9735:
1963 case PCI_DEVICE_ID_NETMOS_9745:
1964 case PCI_DEVICE_ID_NETMOS_9845:
1965 case PCI_DEVICE_ID_NETMOS_9855:
1967 dev_info(&dev->dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
1968 dev->device, num_parallel, num_serial);
1969 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1970 (dev->class & 0xff);
1974 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
1975 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
1978 * Quirk non-zero PCI functions to route VPD access through function 0 for
1979 * devices that share VPD resources between functions. The functions are
1980 * expected to be identical devices.
1982 static void quirk_f0_vpd_link(struct pci_dev *dev)
1986 if (!PCI_FUNC(dev->devfn))
1989 f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
1993 if (f0->vpd && dev->class == f0->class &&
1994 dev->vendor == f0->vendor && dev->device == f0->device)
1995 dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
1999 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2000 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
2002 static void quirk_e100_interrupt(struct pci_dev *dev)
2008 switch (dev->device) {
2009 /* PCI IDs taken from drivers/net/e100.c */
2011 case 0x1030 ... 0x1034:
2012 case 0x1038 ... 0x103E:
2013 case 0x1050 ... 0x1057:
2015 case 0x1064 ... 0x106B:
2016 case 0x1091 ... 0x1095:
2029 * Some firmware hands off the e100 with interrupts enabled,
2030 * which can cause a flood of interrupts if packets are
2031 * received before the driver attaches to the device. So
2032 * disable all e100 interrupts here. The driver will
2033 * re-enable them when it's ready.
2035 pci_read_config_word(dev, PCI_COMMAND, &command);
2037 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2041 * Check that the device is in the D0 power state. If it's not,
2042 * there is no point to look any further.
2045 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2046 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2050 /* Convert from PCI bus to resource space. */
2051 csr = ioremap(pci_resource_start(dev, 0), 8);
2053 dev_warn(&dev->dev, "Can't map e100 registers\n");
2057 cmd_hi = readb(csr + 3);
2059 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; disabling\n");
2065 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2066 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2069 * The 82575 and 82598 may experience data corruption issues when transitioning
2070 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2072 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2074 dev_info(&dev->dev, "Disabling L0s\n");
2075 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2077 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2078 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2079 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2080 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2082 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2084 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2086 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2088 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2089 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2090 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2092 static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
2094 pci_info(dev, "Disabling ASPM L0s/L1\n");
2095 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
2099 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
2100 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
2101 * disable both L0s and L1 for now to be safe.
2103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
2106 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2107 * Link bit cleared after starting the link retrain process to allow this
2108 * process to finish.
2110 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2111 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2113 static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2115 dev->clear_retrain_link = 1;
2116 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2118 DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe110, quirk_enable_clear_retrain_link);
2119 DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe111, quirk_enable_clear_retrain_link);
2120 DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe130, quirk_enable_clear_retrain_link);
2122 static void fixup_rev1_53c810(struct pci_dev *dev)
2124 u32 class = dev->class;
2127 * rev 1 ncr53c810 chips don't set the class at all which means
2128 * they don't get their resources remapped. Fix that here.
2133 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2134 dev_info(&dev->dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2137 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2139 /* Enable 1k I/O space granularity on the Intel P64H2 */
2140 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2144 pci_read_config_word(dev, 0x40, &en1k);
2147 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
2148 dev->io_window_1k = 1;
2151 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2153 /* Under some circumstances, AER is not linked with extended capabilities.
2154 * Force it to be linked by setting the corresponding control bit in the
2157 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2160 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2162 pci_write_config_byte(dev, 0xf41, b | 0x20);
2163 dev_info(&dev->dev, "Linking AER extended capability\n");
2167 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2168 quirk_nvidia_ck804_pcie_aer_ext_cap);
2169 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2170 quirk_nvidia_ck804_pcie_aer_ext_cap);
2172 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2175 * Disable PCI Bus Parking and PCI Master read caching on CX700
2176 * which causes unspecified timing errors with a VT6212L on the PCI
2177 * bus leading to USB2.0 packet loss.
2179 * This quirk is only enabled if a second (on the external PCI bus)
2180 * VT6212L is found -- the CX700 core itself also contains a USB
2181 * host controller with the same PCI ID as the VT6212L.
2184 /* Count VT6212L instances */
2185 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2186 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2189 /* p should contain the first (internal) VT6212L -- see if we have
2190 an external one by searching again */
2191 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2196 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2198 /* Turn off PCI Bus Parking */
2199 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2201 dev_info(&dev->dev, "Disabling VIA CX700 PCI parking\n");
2205 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2207 /* Turn off PCI Master read caching */
2208 pci_write_config_byte(dev, 0x72, 0x0);
2210 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2211 pci_write_config_byte(dev, 0x75, 0x1);
2213 /* Disable "Read FIFO Timer" */
2214 pci_write_config_byte(dev, 0x77, 0x0);
2216 dev_info(&dev->dev, "Disabling VIA CX700 PCI caching\n");
2220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2223 * If a device follows the VPD format spec, the PCI core will not read or
2224 * write past the VPD End Tag. But some vendors do not follow the VPD
2225 * format spec, so we can't tell how much data is safe to access. Devices
2226 * may behave unpredictably if we access too much. Blacklist these devices
2227 * so we don't touch VPD at all.
2229 static void quirk_blacklist_vpd(struct pci_dev *dev)
2233 dev_warn(&dev->dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n");
2237 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0060, quirk_blacklist_vpd);
2238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x007c, quirk_blacklist_vpd);
2239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0413, quirk_blacklist_vpd);
2240 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0078, quirk_blacklist_vpd);
2241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0079, quirk_blacklist_vpd);
2242 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0073, quirk_blacklist_vpd);
2243 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0071, quirk_blacklist_vpd);
2244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005b, quirk_blacklist_vpd);
2245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x002f, quirk_blacklist_vpd);
2246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005d, quirk_blacklist_vpd);
2247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
2248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID,
2249 quirk_blacklist_vpd);
2250 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
2253 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2254 * VPD end tag will hang the device. This problem was initially
2255 * observed when a vpd entry was created in sysfs
2256 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2257 * will dump 32k of data. Reading a full 32k will cause an access
2258 * beyond the VPD end tag causing the device to hang. Once the device
2259 * is hung, the bnx2 driver will not be able to reset the device.
2260 * We believe that it is legal to read beyond the end tag and
2261 * therefore the solution is to limit the read/write length.
2263 static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
2266 * Only disable the VPD capability for 5706, 5706S, 5708,
2267 * 5708S and 5709 rev. A
2269 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
2270 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
2271 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
2272 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
2273 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2274 (dev->revision & 0xf0) == 0x0)) {
2276 dev->vpd->len = 0x80;
2280 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2281 PCI_DEVICE_ID_NX2_5706,
2282 quirk_brcm_570x_limit_vpd);
2283 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2284 PCI_DEVICE_ID_NX2_5706S,
2285 quirk_brcm_570x_limit_vpd);
2286 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2287 PCI_DEVICE_ID_NX2_5708,
2288 quirk_brcm_570x_limit_vpd);
2289 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2290 PCI_DEVICE_ID_NX2_5708S,
2291 quirk_brcm_570x_limit_vpd);
2292 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2293 PCI_DEVICE_ID_NX2_5709,
2294 quirk_brcm_570x_limit_vpd);
2295 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2296 PCI_DEVICE_ID_NX2_5709S,
2297 quirk_brcm_570x_limit_vpd);
2299 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2303 pci_read_config_dword(dev, 0xf4, &rev);
2305 /* Only CAP the MRRS if the device is a 5719 A0 */
2306 if (rev == 0x05719000) {
2307 int readrq = pcie_get_readrq(dev);
2309 pcie_set_readrq(dev, 2048);
2313 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2314 PCI_DEVICE_ID_TIGON3_5719,
2315 quirk_brcm_5719_limit_mrrs);
2317 #ifdef CONFIG_PCIE_IPROC_PLATFORM
2318 static void quirk_paxc_bridge(struct pci_dev *pdev)
2320 /* The PCI config space is shared with the PAXC root port and the first
2321 * Ethernet device. So, we need to workaround this by telling the PCI
2322 * code that the bridge is not an Ethernet device.
2324 if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
2325 pdev->class = PCI_CLASS_BRIDGE_PCI << 8;
2327 /* MPSS is not being set properly (as it is currently 0). This is
2328 * because that area of the PCI config space is hard coded to zero, and
2329 * is not modifiable by firmware. Set this to 2 (e.g., 512 byte MPS)
2330 * so that the MPS can be set to the real max value.
2332 pdev->pcie_mpss = 2;
2334 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16cd, quirk_paxc_bridge);
2335 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16f0, quirk_paxc_bridge);
2338 /* Originally in EDAC sources for i82875P:
2339 * Intel tells BIOS developers to hide device 6 which
2340 * configures the overflow device access containing
2341 * the DRBs - this is where we expose device 6.
2342 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2344 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2348 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2349 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2350 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2354 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2355 quirk_unhide_mch_dev6);
2356 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2357 quirk_unhide_mch_dev6);
2359 #ifdef CONFIG_TILEPRO
2361 * The Tilera TILEmpower tilepro platform needs to set the link speed
2362 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
2363 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
2364 * capability register of the PEX8624 PCIe switch. The switch
2365 * supports link speed auto negotiation, but falsely sets
2366 * the link speed to 5GT/s.
2368 static void quirk_tile_plx_gen1(struct pci_dev *dev)
2370 if (tile_plx_gen1) {
2371 pci_write_config_dword(dev, 0x98, 0x1);
2375 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
2376 #endif /* CONFIG_TILEPRO */
2378 #ifdef CONFIG_PCI_MSI
2379 /* Some chipsets do not support MSI. We cannot easily rely on setting
2380 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2381 * some other buses controlled by the chipset even if Linux is not
2382 * aware of it. Instead of setting the flag on all buses in the
2383 * machine, simply disable MSI globally.
2385 static void quirk_disable_all_msi(struct pci_dev *dev)
2388 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2390 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2392 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2395 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2396 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2397 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2399 /* Disable MSI on chipsets that are known to not support it */
2400 static void quirk_disable_msi(struct pci_dev *dev)
2402 if (dev->subordinate) {
2403 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2404 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2407 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2408 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2412 * The APC bridge device in AMD 780 family northbridges has some random
2413 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2414 * we use the possible vendor/device IDs of the host bridge for the
2415 * declared quirk, and search for the APC bridge by slot number.
2417 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2419 struct pci_dev *apc_bridge;
2421 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2423 if (apc_bridge->device == 0x9602)
2424 quirk_disable_msi(apc_bridge);
2425 pci_dev_put(apc_bridge);
2428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2431 /* Go through the list of Hypertransport capabilities and
2432 * return 1 if a HT MSI capability is found and enabled */
2433 static int msi_ht_cap_enabled(struct pci_dev *dev)
2435 int pos, ttl = PCI_FIND_CAP_TTL;
2437 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2438 while (pos && ttl--) {
2441 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2443 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2444 flags & HT_MSI_FLAGS_ENABLE ?
2445 "enabled" : "disabled");
2446 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2449 pos = pci_find_next_ht_capability(dev, pos,
2450 HT_CAPTYPE_MSI_MAPPING);
2455 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2456 static void quirk_msi_ht_cap(struct pci_dev *dev)
2458 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2459 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2460 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2463 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2466 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2467 * MSI are supported if the MSI capability set in any of these mappings.
2469 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2471 struct pci_dev *pdev;
2473 if (!dev->subordinate)
2476 /* check HT MSI cap on this chipset and the root one.
2477 * a single one having MSI is enough to be sure that MSI are supported.
2479 pdev = pci_get_slot(dev->bus, 0);
2482 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2483 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2484 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2488 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2489 quirk_nvidia_ck804_msi_ht_cap);
2491 /* Force enable MSI mapping capability on HT bridges */
2492 static void ht_enable_msi_mapping(struct pci_dev *dev)
2494 int pos, ttl = PCI_FIND_CAP_TTL;
2496 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2497 while (pos && ttl--) {
2500 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2502 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2504 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2505 flags | HT_MSI_FLAGS_ENABLE);
2507 pos = pci_find_next_ht_capability(dev, pos,
2508 HT_CAPTYPE_MSI_MAPPING);
2511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2512 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2513 ht_enable_msi_mapping);
2515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2516 ht_enable_msi_mapping);
2518 /* The P5N32-SLI motherboards from Asus have a problem with msi
2519 * for the MCP55 NIC. It is not yet determined whether the msi problem
2520 * also affects other devices. As for now, turn off msi for this device.
2522 static void nvenet_msi_disable(struct pci_dev *dev)
2524 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2527 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2528 strstr(board_name, "P5N32-E SLI"))) {
2529 dev_info(&dev->dev, "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2533 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2534 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2535 nvenet_msi_disable);
2538 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2539 * config register. This register controls the routing of legacy
2540 * interrupts from devices that route through the MCP55. If this register
2541 * is misprogrammed, interrupts are only sent to the BSP, unlike
2542 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2543 * having this register set properly prevents kdump from booting up
2544 * properly, so let's make sure that we have it set correctly.
2545 * Note that this is an undocumented register.
2547 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2551 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2554 pci_read_config_dword(dev, 0x74, &cfg);
2556 if (cfg & ((1 << 2) | (1 << 15))) {
2557 printk(KERN_INFO "Rewriting irq routing register on MCP55\n");
2558 cfg &= ~((1 << 2) | (1 << 15));
2559 pci_write_config_dword(dev, 0x74, cfg);
2563 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2564 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2565 nvbridge_check_legacy_irq_routing);
2567 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2568 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2569 nvbridge_check_legacy_irq_routing);
2571 static int ht_check_msi_mapping(struct pci_dev *dev)
2573 int pos, ttl = PCI_FIND_CAP_TTL;
2576 /* check if there is HT MSI cap or enabled on this device */
2577 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2578 while (pos && ttl--) {
2583 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2585 if (flags & HT_MSI_FLAGS_ENABLE) {
2592 pos = pci_find_next_ht_capability(dev, pos,
2593 HT_CAPTYPE_MSI_MAPPING);
2599 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2601 struct pci_dev *dev;
2606 dev_no = host_bridge->devfn >> 3;
2607 for (i = dev_no + 1; i < 0x20; i++) {
2608 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2612 /* found next host bridge ?*/
2613 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2619 if (ht_check_msi_mapping(dev)) {
2630 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2631 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2633 static int is_end_of_ht_chain(struct pci_dev *dev)
2639 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2644 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2646 ctrl_off = ((flags >> 10) & 1) ?
2647 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2648 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2650 if (ctrl & (1 << 6))
2657 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2659 struct pci_dev *host_bridge;
2664 dev_no = dev->devfn >> 3;
2665 for (i = dev_no; i >= 0; i--) {
2666 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2670 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2675 pci_dev_put(host_bridge);
2681 /* don't enable end_device/host_bridge with leaf directly here */
2682 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2683 host_bridge_with_leaf(host_bridge))
2686 /* root did that ! */
2687 if (msi_ht_cap_enabled(host_bridge))
2690 ht_enable_msi_mapping(dev);
2693 pci_dev_put(host_bridge);
2696 static void ht_disable_msi_mapping(struct pci_dev *dev)
2698 int pos, ttl = PCI_FIND_CAP_TTL;
2700 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2701 while (pos && ttl--) {
2704 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2706 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2708 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2709 flags & ~HT_MSI_FLAGS_ENABLE);
2711 pos = pci_find_next_ht_capability(dev, pos,
2712 HT_CAPTYPE_MSI_MAPPING);
2716 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2718 struct pci_dev *host_bridge;
2722 if (!pci_msi_enabled())
2725 /* check if there is HT MSI cap or enabled on this device */
2726 found = ht_check_msi_mapping(dev);
2733 * HT MSI mapping should be disabled on devices that are below
2734 * a non-Hypertransport host bridge. Locate the host bridge...
2736 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2737 if (host_bridge == NULL) {
2738 dev_warn(&dev->dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2742 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2744 /* Host bridge is to HT */
2746 /* it is not enabled, try to enable it */
2748 ht_enable_msi_mapping(dev);
2750 nv_ht_enable_msi_mapping(dev);
2755 /* HT MSI is not enabled */
2759 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2760 ht_disable_msi_mapping(dev);
2763 pci_dev_put(host_bridge);
2766 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2768 return __nv_msi_ht_cap_quirk(dev, 1);
2771 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2773 return __nv_msi_ht_cap_quirk(dev, 0);
2776 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2777 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2779 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2780 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2782 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2784 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2786 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2790 /* SB700 MSI issue will be fixed at HW level from revision A21,
2791 * we need check PCI REVISION ID of SMBus controller to get SB700
2794 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2799 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2800 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2803 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2805 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2806 if (dev->revision < 0x18) {
2807 dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n");
2808 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2811 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2812 PCI_DEVICE_ID_TIGON3_5780,
2813 quirk_msi_intx_disable_bug);
2814 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2815 PCI_DEVICE_ID_TIGON3_5780S,
2816 quirk_msi_intx_disable_bug);
2817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2818 PCI_DEVICE_ID_TIGON3_5714,
2819 quirk_msi_intx_disable_bug);
2820 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2821 PCI_DEVICE_ID_TIGON3_5714S,
2822 quirk_msi_intx_disable_bug);
2823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2824 PCI_DEVICE_ID_TIGON3_5715,
2825 quirk_msi_intx_disable_bug);
2826 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2827 PCI_DEVICE_ID_TIGON3_5715S,
2828 quirk_msi_intx_disable_bug);
2830 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2831 quirk_msi_intx_disable_ati_bug);
2832 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2833 quirk_msi_intx_disable_ati_bug);
2834 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2835 quirk_msi_intx_disable_ati_bug);
2836 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2837 quirk_msi_intx_disable_ati_bug);
2838 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2839 quirk_msi_intx_disable_ati_bug);
2841 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2842 quirk_msi_intx_disable_bug);
2843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2844 quirk_msi_intx_disable_bug);
2845 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2846 quirk_msi_intx_disable_bug);
2848 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2849 quirk_msi_intx_disable_bug);
2850 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2851 quirk_msi_intx_disable_bug);
2852 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2853 quirk_msi_intx_disable_bug);
2854 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2855 quirk_msi_intx_disable_bug);
2856 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2857 quirk_msi_intx_disable_bug);
2858 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
2859 quirk_msi_intx_disable_bug);
2860 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
2861 quirk_msi_intx_disable_qca_bug);
2862 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
2863 quirk_msi_intx_disable_qca_bug);
2864 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
2865 quirk_msi_intx_disable_qca_bug);
2866 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
2867 quirk_msi_intx_disable_qca_bug);
2868 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
2869 quirk_msi_intx_disable_qca_bug);
2870 #endif /* CONFIG_PCI_MSI */
2872 /* Allow manual resource allocation for PCI hotplug bridges
2873 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2874 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2875 * kernel fails to allocate resources when hotplug device is
2876 * inserted and PCI bus is rescanned.
2878 static void quirk_hotplug_bridge(struct pci_dev *dev)
2880 dev->is_hotplug_bridge = 1;
2883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
2886 * This is a quirk for the Ricoh MMC controller found as a part of
2887 * some mulifunction chips.
2889 * This is very similar and based on the ricoh_mmc driver written by
2890 * Philip Langdale. Thank you for these magic sequences.
2892 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2893 * and one or both of cardbus or firewire.
2895 * It happens that they implement SD and MMC
2896 * support as separate controllers (and PCI functions). The linux SDHCI
2897 * driver supports MMC cards but the chip detects MMC cards in hardware
2898 * and directs them to the MMC controller - so the SDHCI driver never sees
2901 * To get around this, we must disable the useless MMC controller.
2902 * At that point, the SDHCI controller will start seeing them
2903 * It seems to be the case that the relevant PCI registers to deactivate the
2904 * MMC controller live on PCI function 0, which might be the cardbus controller
2905 * or the firewire controller, depending on the particular chip in question
2907 * This has to be done early, because as soon as we disable the MMC controller
2908 * other pci functions shift up one level, e.g. function #2 becomes function
2909 * #1, and this will confuse the pci core.
2912 #ifdef CONFIG_MMC_RICOH_MMC
2913 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
2915 /* disable via cardbus interface */
2920 /* disable must be done via function #0 */
2921 if (PCI_FUNC(dev->devfn))
2924 pci_read_config_byte(dev, 0xB7, &disable);
2928 pci_read_config_byte(dev, 0x8E, &write_enable);
2929 pci_write_config_byte(dev, 0x8E, 0xAA);
2930 pci_read_config_byte(dev, 0x8D, &write_target);
2931 pci_write_config_byte(dev, 0x8D, 0xB7);
2932 pci_write_config_byte(dev, 0xB7, disable | 0x02);
2933 pci_write_config_byte(dev, 0x8E, write_enable);
2934 pci_write_config_byte(dev, 0x8D, write_target);
2936 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2937 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2939 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2940 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2942 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
2944 /* disable via firewire interface */
2948 /* disable must be done via function #0 */
2949 if (PCI_FUNC(dev->devfn))
2952 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
2953 * certain types of SD/MMC cards. Lowering the SD base
2954 * clock frequency from 200Mhz to 50Mhz fixes this issue.
2956 * 0x150 - SD2.0 mode enable for changing base clock
2957 * frequency to 50Mhz
2958 * 0xe1 - Base clock frequency
2959 * 0x32 - 50Mhz new clock frequency
2960 * 0xf9 - Key register for 0x150
2961 * 0xfc - key register for 0xe1
2963 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
2964 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
2965 pci_write_config_byte(dev, 0xf9, 0xfc);
2966 pci_write_config_byte(dev, 0x150, 0x10);
2967 pci_write_config_byte(dev, 0xf9, 0x00);
2968 pci_write_config_byte(dev, 0xfc, 0x01);
2969 pci_write_config_byte(dev, 0xe1, 0x32);
2970 pci_write_config_byte(dev, 0xfc, 0x00);
2972 dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n");
2975 pci_read_config_byte(dev, 0xCB, &disable);
2980 pci_read_config_byte(dev, 0xCA, &write_enable);
2981 pci_write_config_byte(dev, 0xCA, 0x57);
2982 pci_write_config_byte(dev, 0xCB, disable | 0x02);
2983 pci_write_config_byte(dev, 0xCA, write_enable);
2985 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2986 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2989 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2990 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2991 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2992 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2993 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2994 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2995 #endif /*CONFIG_MMC_RICOH_MMC*/
2997 #ifdef CONFIG_DMAR_TABLE
2998 #define VTUNCERRMSK_REG 0x1ac
2999 #define VTD_MSK_SPEC_ERRORS (1 << 31)
3001 * This is a quirk for masking vt-d spec defined errors to platform error
3002 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
3003 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3004 * on the RAS config settings of the platform) when a vt-d fault happens.
3005 * The resulting SMI caused the system to hang.
3007 * VT-d spec related errors are already handled by the VT-d OS code, so no
3008 * need to report the same error through other channels.
3010 static void vtd_mask_spec_errors(struct pci_dev *dev)
3014 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3015 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3017 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3018 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3021 static void fixup_ti816x_class(struct pci_dev *dev)
3023 u32 class = dev->class;
3025 /* TI 816x devices do not have class code set when in PCIe boot mode */
3026 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3027 dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n",
3030 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3031 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3033 /* Some PCIe devices do not work reliably with the claimed maximum
3034 * payload size supported.
3036 static void fixup_mpss_256(struct pci_dev *dev)
3038 dev->pcie_mpss = 1; /* 256 bytes */
3040 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3041 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3042 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3043 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3044 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3045 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3046 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256);
3048 /* Intel 5000 and 5100 Memory controllers have an errata with read completion
3049 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3050 * Since there is no way of knowing what the PCIE MPS on each fabric will be
3051 * until all of the devices are discovered and buses walked, read completion
3052 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3053 * it is possible to hotplug a device with MPS of 256B.
3055 static void quirk_intel_mc_errata(struct pci_dev *dev)
3060 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3061 pcie_bus_config == PCIE_BUS_DEFAULT)
3064 /* Intel errata specifies bits to change but does not say what they are.
3065 * Keeping them magical until such time as the registers and values can
3068 err = pci_read_config_word(dev, 0x48, &rcc);
3070 dev_err(&dev->dev, "Error attempting to read the read completion coalescing register\n");
3074 if (!(rcc & (1 << 10)))
3079 err = pci_write_config_word(dev, 0x48, rcc);
3081 dev_err(&dev->dev, "Error attempting to write the read completion coalescing register\n");
3085 pr_info_once("Read completion coalescing disabled due to hardware errata relating to 256B MPS\n");
3087 /* Intel 5000 series memory controllers and ports 2-7 */
3088 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3089 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3090 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3091 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3092 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3093 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3094 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3095 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3096 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3097 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3098 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3099 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3100 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3101 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3102 /* Intel 5100 series memory controllers and ports 2-7 */
3103 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3104 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3105 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3106 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3107 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3108 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3109 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3110 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3111 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3112 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3113 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3117 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To
3118 * work around this, query the size it should be configured to by the device and
3119 * modify the resource end to correspond to this new size.
3121 static void quirk_intel_ntb(struct pci_dev *dev)
3126 rc = pci_read_config_byte(dev, 0x00D0, &val);
3130 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3132 rc = pci_read_config_byte(dev, 0x00D1, &val);
3136 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3138 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3139 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3141 static ktime_t fixup_debug_start(struct pci_dev *dev,
3142 void (*fn)(struct pci_dev *dev))
3144 ktime_t calltime = 0;
3146 dev_dbg(&dev->dev, "calling %pF\n", fn);
3147 if (initcall_debug) {
3148 pr_debug("calling %pF @ %i for %s\n",
3149 fn, task_pid_nr(current), dev_name(&dev->dev));
3150 calltime = ktime_get();
3156 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
3157 void (*fn)(struct pci_dev *dev))
3159 ktime_t delta, rettime;
3160 unsigned long long duration;
3162 if (initcall_debug) {
3163 rettime = ktime_get();
3164 delta = ktime_sub(rettime, calltime);
3165 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
3166 pr_debug("pci fixup %pF returned after %lld usecs for %s\n",
3167 fn, duration, dev_name(&dev->dev));
3172 * Some BIOS implementations leave the Intel GPU interrupts enabled,
3173 * even though no one is handling them (f.e. i915 driver is never loaded).
3174 * Additionally the interrupt destination is not set up properly
3175 * and the interrupt ends up -somewhere-.
3177 * These spurious interrupts are "sticky" and the kernel disables
3178 * the (shared) interrupt line after 100.000+ generated interrupts.
3180 * Fix it by disabling the still enabled interrupts.
3181 * This resolves crashes often seen on monitor unplug.
3183 #define I915_DEIER_REG 0x4400c
3184 static void disable_igfx_irq(struct pci_dev *dev)
3186 void __iomem *regs = pci_iomap(dev, 0, 0);
3188 dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n");
3192 /* Check if any interrupt line is still enabled */
3193 if (readl(regs + I915_DEIER_REG) != 0) {
3194 dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3196 writel(0, regs + I915_DEIER_REG);
3199 pci_iounmap(dev, regs);
3201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3210 * PCI devices which are on Intel chips can skip the 10ms delay
3211 * before entering D3 mode.
3213 static void quirk_remove_d3_delay(struct pci_dev *dev)
3217 /* C600 Series devices do not need 10ms d3_delay */
3218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
3219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
3220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
3221 /* Lynxpoint-H PCH devices do not need 10ms d3_delay */
3222 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
3223 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
3224 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
3225 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
3226 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
3227 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
3228 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
3229 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
3230 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
3231 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
3232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
3233 /* Intel Cherrytrail devices do not need 10ms d3_delay */
3234 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3_delay);
3235 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
3236 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
3237 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3_delay);
3238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
3239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
3240 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3_delay);
3241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3_delay);
3242 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3_delay);
3245 * Some devices may pass our check in pci_intx_mask_supported() if
3246 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3247 * support this feature.
3249 static void quirk_broken_intx_masking(struct pci_dev *dev)
3251 dev->broken_intx_masking = 1;
3253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3254 quirk_broken_intx_masking);
3255 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3256 quirk_broken_intx_masking);
3259 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3260 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3262 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3265 quirk_broken_intx_masking);
3268 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3269 * DisINTx can be set but the interrupt status bit is non-functional.
3271 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572,
3272 quirk_broken_intx_masking);
3273 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574,
3274 quirk_broken_intx_masking);
3275 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580,
3276 quirk_broken_intx_masking);
3277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581,
3278 quirk_broken_intx_masking);
3279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583,
3280 quirk_broken_intx_masking);
3281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584,
3282 quirk_broken_intx_masking);
3283 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585,
3284 quirk_broken_intx_masking);
3285 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586,
3286 quirk_broken_intx_masking);
3287 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587,
3288 quirk_broken_intx_masking);
3289 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588,
3290 quirk_broken_intx_masking);
3291 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589,
3292 quirk_broken_intx_masking);
3293 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a,
3294 quirk_broken_intx_masking);
3295 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b,
3296 quirk_broken_intx_masking);
3297 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0,
3298 quirk_broken_intx_masking);
3299 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1,
3300 quirk_broken_intx_masking);
3301 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2,
3302 quirk_broken_intx_masking);
3304 static u16 mellanox_broken_intx_devs[] = {
3305 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3306 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3307 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3308 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3309 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3310 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3311 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3312 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3313 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3314 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3315 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3316 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3317 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3318 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3321 #define CONNECTX_4_CURR_MAX_MINOR 99
3322 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3325 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3326 * If so, don't mark it as broken.
3327 * FW minor > 99 means older FW version format and no INTx masking support.
3328 * FW minor < 14 means new FW version format and no INTx masking support.
3330 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3332 __be32 __iomem *fw_ver;
3340 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3341 if (pdev->device == mellanox_broken_intx_devs[i]) {
3342 pdev->broken_intx_masking = 1;
3347 /* Getting here means Connect-IB cards and up. Connect-IB has no INTx
3348 * support so shouldn't be checked further
3350 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3353 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3354 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3357 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3358 if (pci_enable_device_mem(pdev)) {
3359 dev_warn(&pdev->dev, "Can't enable device memory\n");
3363 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3365 dev_warn(&pdev->dev, "Can't map ConnectX-4 initialization segment\n");
3369 /* Reading from resource space should be 32b aligned */
3370 fw_maj_min = ioread32be(fw_ver);
3371 fw_sub_min = ioread32be(fw_ver + 1);
3372 fw_major = fw_maj_min & 0xffff;
3373 fw_minor = fw_maj_min >> 16;
3374 fw_subminor = fw_sub_min & 0xffff;
3375 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3376 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3377 dev_warn(&pdev->dev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n",
3378 fw_major, fw_minor, fw_subminor, pdev->device ==
3379 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3380 pdev->broken_intx_masking = 1;
3386 pci_disable_device(pdev);
3388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3389 mellanox_check_broken_intx_masking);
3391 static void quirk_no_bus_reset(struct pci_dev *dev)
3393 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3397 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
3398 * prevented for those affected devices.
3400 static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
3402 if ((dev->device & 0xffc0) == 0x2340)
3403 quirk_no_bus_reset(dev);
3405 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
3406 quirk_nvidia_no_bus_reset);
3409 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3410 * The device will throw a Link Down error on AER-capable systems and
3411 * regardless of AER, config space of the device is never accessible again
3412 * and typically causes the system to hang or reset when access is attempted.
3413 * http://www.spinics.net/lists/linux-pci/msg34797.html
3415 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3416 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3417 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3418 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3419 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3420 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset);
3423 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
3424 * automatically disables LTSSM when Secondary Bus Reset is received and
3425 * the device stops working. Prevent bus reset for these devices. With
3426 * this change, the device can be assigned to VMs with VFIO, but it will
3427 * leak state between VMs. Reference
3428 * https://e2e.ti.com/support/processors/f/791/t/954382
3430 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
3432 static void quirk_no_pm_reset(struct pci_dev *dev)
3435 * We can't do a bus reset on root bus devices, but an ineffective
3436 * PM reset may be better than nothing.
3438 if (!pci_is_root_bus(dev->bus))
3439 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3443 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3444 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3445 * to have no effect on the device: it retains the framebuffer contents and
3446 * monitor sync. Advertising this support makes other layers, like VFIO,
3447 * assume pci_reset_function() is viable for this device. Mark it as
3448 * unavailable to skip it when testing reset methods.
3450 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3451 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3454 * Thunderbolt controllers with broken MSI hotplug signaling:
3455 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3456 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3458 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3460 if (pdev->is_hotplug_bridge &&
3461 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3462 pdev->revision <= 1))
3465 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3466 quirk_thunderbolt_hotplug_msi);
3467 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3468 quirk_thunderbolt_hotplug_msi);
3469 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3470 quirk_thunderbolt_hotplug_msi);
3471 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3472 quirk_thunderbolt_hotplug_msi);
3473 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3474 quirk_thunderbolt_hotplug_msi);
3476 static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
3478 int chip = (dev->device & 0xf000) >> 12;
3479 int func = (dev->device & 0x0f00) >> 8;
3480 int prod = (dev->device & 0x00ff) >> 0;
3483 * If this is a T3-based adapter, there's a 1KB VPD area at offset
3484 * 0xc00 which contains the preferred VPD values. If this is a T4 or
3485 * later based adapter, the special VPD is at offset 0x400 for the
3486 * Physical Functions (the SR-IOV Virtual Functions have no VPD
3487 * Capabilities). The PCI VPD Access core routines will normally
3488 * compute the size of the VPD by parsing the VPD Data Structure at
3489 * offset 0x000. This will result in silent failures when attempting
3490 * to accesses these other VPD areas which are beyond those computed
3493 if (chip == 0x0 && prod >= 0x20)
3494 pci_set_vpd_size(dev, 8192);
3495 else if (chip >= 0x4 && func < 0x8)
3496 pci_set_vpd_size(dev, 2048);
3499 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3500 quirk_chelsio_extend_vpd);
3504 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3506 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3507 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3508 * be present after resume if a device was plugged in before suspend.
3510 * The thunderbolt controller consists of a pcie switch with downstream
3511 * bridges leading to the NHI and to the tunnel pci bridges.
3513 * This quirk cuts power to the whole chip. Therefore we have to apply it
3514 * during suspend_noirq of the upstream bridge.
3516 * Power is automagically restored before resume. No action is needed.
3518 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3520 acpi_handle bridge, SXIO, SXFP, SXLV;
3522 if (!x86_apple_machine)
3524 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3526 bridge = ACPI_HANDLE(&dev->dev);
3530 * SXIO and SXLV are present only on machines requiring this quirk.
3531 * TB bridges in external devices might have the same device id as those
3532 * on the host, but they will not have the associated ACPI methods. This
3533 * implicitly checks that we are at the right bridge.
3535 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3536 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3537 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3539 dev_info(&dev->dev, "quirk: cutting power to thunderbolt controller...\n");
3541 /* magic sequence */
3542 acpi_execute_simple_method(SXIO, NULL, 1);
3543 acpi_execute_simple_method(SXFP, NULL, 0);
3545 acpi_execute_simple_method(SXLV, NULL, 0);
3546 acpi_execute_simple_method(SXIO, NULL, 0);
3547 acpi_execute_simple_method(SXLV, NULL, 0);
3549 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3550 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3551 quirk_apple_poweroff_thunderbolt);
3554 * Apple: Wait for the thunderbolt controller to reestablish pci tunnels.
3556 * During suspend the thunderbolt controller is reset and all pci
3557 * tunnels are lost. The NHI driver will try to reestablish all tunnels
3558 * during resume. We have to manually wait for the NHI since there is
3559 * no parent child relationship between the NHI and the tunneled
3562 static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev)
3564 struct pci_dev *sibling = NULL;
3565 struct pci_dev *nhi = NULL;
3567 if (!x86_apple_machine)
3569 if (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)
3572 * Find the NHI and confirm that we are a bridge on the tb host
3573 * controller and not on a tb endpoint.
3575 sibling = pci_get_slot(dev->bus, 0x0);
3577 goto out; /* we are the downstream bridge to the NHI */
3578 if (!sibling || !sibling->subordinate)
3580 nhi = pci_get_slot(sibling->subordinate, 0x0);
3583 if (nhi->vendor != PCI_VENDOR_ID_INTEL
3584 || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE &&
3585 nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C &&
3586 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI &&
3587 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI)
3588 || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8)
3590 dev_info(&dev->dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n");
3591 device_pm_wait_for_dev(&dev->dev, &nhi->dev);
3594 pci_dev_put(sibling);
3596 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3597 PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3598 quirk_apple_wait_for_thunderbolt);
3599 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3600 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3601 quirk_apple_wait_for_thunderbolt);
3602 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3603 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE,
3604 quirk_apple_wait_for_thunderbolt);
3605 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3606 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE,
3607 quirk_apple_wait_for_thunderbolt);
3610 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
3611 struct pci_fixup *end)
3615 for (; f < end; f++)
3616 if ((f->class == (u32) (dev->class >> f->class_shift) ||
3617 f->class == (u32) PCI_ANY_ID) &&
3618 (f->vendor == dev->vendor ||
3619 f->vendor == (u16) PCI_ANY_ID) &&
3620 (f->device == dev->device ||
3621 f->device == (u16) PCI_ANY_ID)) {
3622 calltime = fixup_debug_start(dev, f->hook);
3624 fixup_debug_report(dev, calltime, f->hook);
3628 extern struct pci_fixup __start_pci_fixups_early[];
3629 extern struct pci_fixup __end_pci_fixups_early[];
3630 extern struct pci_fixup __start_pci_fixups_header[];
3631 extern struct pci_fixup __end_pci_fixups_header[];
3632 extern struct pci_fixup __start_pci_fixups_final[];
3633 extern struct pci_fixup __end_pci_fixups_final[];
3634 extern struct pci_fixup __start_pci_fixups_enable[];
3635 extern struct pci_fixup __end_pci_fixups_enable[];
3636 extern struct pci_fixup __start_pci_fixups_resume[];
3637 extern struct pci_fixup __end_pci_fixups_resume[];
3638 extern struct pci_fixup __start_pci_fixups_resume_early[];
3639 extern struct pci_fixup __end_pci_fixups_resume_early[];
3640 extern struct pci_fixup __start_pci_fixups_suspend[];
3641 extern struct pci_fixup __end_pci_fixups_suspend[];
3642 extern struct pci_fixup __start_pci_fixups_suspend_late[];
3643 extern struct pci_fixup __end_pci_fixups_suspend_late[];
3645 static bool pci_apply_fixup_final_quirks;
3647 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
3649 struct pci_fixup *start, *end;
3652 case pci_fixup_early:
3653 start = __start_pci_fixups_early;
3654 end = __end_pci_fixups_early;
3657 case pci_fixup_header:
3658 start = __start_pci_fixups_header;
3659 end = __end_pci_fixups_header;
3662 case pci_fixup_final:
3663 if (!pci_apply_fixup_final_quirks)
3665 start = __start_pci_fixups_final;
3666 end = __end_pci_fixups_final;
3669 case pci_fixup_enable:
3670 start = __start_pci_fixups_enable;
3671 end = __end_pci_fixups_enable;
3674 case pci_fixup_resume:
3675 start = __start_pci_fixups_resume;
3676 end = __end_pci_fixups_resume;
3679 case pci_fixup_resume_early:
3680 start = __start_pci_fixups_resume_early;
3681 end = __end_pci_fixups_resume_early;
3684 case pci_fixup_suspend:
3685 start = __start_pci_fixups_suspend;
3686 end = __end_pci_fixups_suspend;
3689 case pci_fixup_suspend_late:
3690 start = __start_pci_fixups_suspend_late;
3691 end = __end_pci_fixups_suspend_late;
3695 /* stupid compiler warning, you would think with an enum... */
3698 pci_do_fixups(dev, start, end);
3700 EXPORT_SYMBOL(pci_fixup_device);
3703 static int __init pci_apply_final_quirks(void)
3705 struct pci_dev *dev = NULL;
3709 if (pci_cache_line_size)
3710 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
3711 pci_cache_line_size << 2);
3713 pci_apply_fixup_final_quirks = true;
3714 for_each_pci_dev(dev) {
3715 pci_fixup_device(pci_fixup_final, dev);
3717 * If arch hasn't set it explicitly yet, use the CLS
3718 * value shared by all PCI devices. If there's a
3719 * mismatch, fall back to the default value.
3721 if (!pci_cache_line_size) {
3722 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
3725 if (!tmp || cls == tmp)
3728 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), using %u bytes\n",
3730 pci_dfl_cache_line_size << 2);
3731 pci_cache_line_size = pci_dfl_cache_line_size;
3735 if (!pci_cache_line_size) {
3736 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
3737 cls << 2, pci_dfl_cache_line_size << 2);
3738 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
3744 fs_initcall_sync(pci_apply_final_quirks);
3747 * Following are device-specific reset methods which can be used to
3748 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3751 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3754 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3756 * The 82599 supports FLR on VFs, but FLR support is reported only
3757 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3758 * Thus we must call pcie_flr() directly without first checking if it is
3766 #define SOUTH_CHICKEN2 0xc2004
3767 #define PCH_PP_STATUS 0xc7200
3768 #define PCH_PP_CONTROL 0xc7204
3769 #define MSG_CTL 0x45010
3770 #define NSDE_PWR_STATE 0xd0100
3771 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3773 static int reset_ivb_igd(struct pci_dev *dev, int probe)
3775 void __iomem *mmio_base;
3776 unsigned long timeout;
3782 mmio_base = pci_iomap(dev, 0, 0);
3786 iowrite32(0x00000002, mmio_base + MSG_CTL);
3789 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3790 * driver loaded sets the right bits. However, this's a reset and
3791 * the bits have been set by i915 previously, so we clobber
3792 * SOUTH_CHICKEN2 register directly here.
3794 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3796 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3797 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3799 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3801 val = ioread32(mmio_base + PCH_PP_STATUS);
3802 if ((val & 0xb0000000) == 0)
3803 goto reset_complete;
3805 } while (time_before(jiffies, timeout));
3806 dev_warn(&dev->dev, "timeout during reset\n");
3809 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3811 pci_iounmap(dev, mmio_base);
3816 * Device-specific reset method for Chelsio T4-based adapters.
3818 static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3824 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3825 * that we have no device-specific reset method.
3827 if ((dev->device & 0xf000) != 0x4000)
3831 * If this is the "probe" phase, return 0 indicating that we can
3832 * reset this device.
3838 * T4 can wedge if there are DMAs in flight within the chip and Bus
3839 * Master has been disabled. We need to have it on till the Function
3840 * Level Reset completes. (BUS_MASTER is disabled in
3841 * pci_reset_function()).
3843 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3844 pci_write_config_word(dev, PCI_COMMAND,
3845 old_command | PCI_COMMAND_MASTER);
3848 * Perform the actual device function reset, saving and restoring
3849 * configuration information around the reset.
3851 pci_save_state(dev);
3854 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3855 * are disabled when an MSI-X interrupt message needs to be delivered.
3856 * So we briefly re-enable MSI-X interrupts for the duration of the
3857 * FLR. The pci_restore_state() below will restore the original
3860 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3861 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3862 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3864 PCI_MSIX_FLAGS_ENABLE |
3865 PCI_MSIX_FLAGS_MASKALL);
3870 * Restore the configuration information (BAR values, etc.) including
3871 * the original PCI Configuration Space Command word, and return
3874 pci_restore_state(dev);
3875 pci_write_config_word(dev, PCI_COMMAND, old_command);
3879 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3880 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3881 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3883 #define PCI_DEVICE_ID_HINIC_VF 0x375E
3884 #define HINIC_VF_FLR_TYPE 0x1000
3885 #define HINIC_VF_FLR_CAP_BIT (1UL << 30)
3886 #define HINIC_VF_OP 0xE80
3887 #define HINIC_VF_FLR_PROC_BIT (1UL << 18)
3888 #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */
3890 /* Device-specific reset method for Huawei Intelligent NIC virtual functions */
3891 static int reset_hinic_vf_dev(struct pci_dev *pdev, int probe)
3893 unsigned long timeout;
3900 bar = pci_iomap(pdev, 0, 0);
3904 /* Get and check firmware capabilities */
3905 val = ioread32be(bar + HINIC_VF_FLR_TYPE);
3906 if (!(val & HINIC_VF_FLR_CAP_BIT)) {
3907 pci_iounmap(pdev, bar);
3911 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */
3912 val = ioread32be(bar + HINIC_VF_OP);
3913 val = val | HINIC_VF_FLR_PROC_BIT;
3914 iowrite32be(val, bar + HINIC_VF_OP);
3919 * The device must recapture its Bus and Device Numbers after FLR
3920 * in order generate Completions. Issue a config write to let the
3921 * device capture this information.
3923 pci_write_config_word(pdev, PCI_VENDOR_ID, 0);
3925 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */
3926 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT);
3928 val = ioread32be(bar + HINIC_VF_OP);
3929 if (!(val & HINIC_VF_FLR_PROC_BIT))
3930 goto reset_complete;
3932 } while (time_before(jiffies, timeout));
3934 val = ioread32be(bar + HINIC_VF_OP);
3935 if (!(val & HINIC_VF_FLR_PROC_BIT))
3936 goto reset_complete;
3938 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val);
3941 pci_iounmap(pdev, bar);
3946 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
3947 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
3948 reset_intel_82599_sfp_virtfn },
3949 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
3951 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
3953 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3954 reset_chelsio_generic_dev },
3955 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF,
3956 reset_hinic_vf_dev },
3961 * These device-specific reset methods are here rather than in a driver
3962 * because when a host assigns a device to a guest VM, the host may need
3963 * to reset the device but probably doesn't have a driver for it.
3965 int pci_dev_specific_reset(struct pci_dev *dev, int probe)
3967 const struct pci_dev_reset_methods *i;
3969 for (i = pci_dev_reset_methods; i->reset; i++) {
3970 if ((i->vendor == dev->vendor ||
3971 i->vendor == (u16)PCI_ANY_ID) &&
3972 (i->device == dev->device ||
3973 i->device == (u16)PCI_ANY_ID))
3974 return i->reset(dev, probe);
3980 static void quirk_dma_func0_alias(struct pci_dev *dev)
3982 if (PCI_FUNC(dev->devfn) != 0)
3983 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
3987 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3989 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
3991 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
3992 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
3994 static void quirk_dma_func1_alias(struct pci_dev *dev)
3996 if (PCI_FUNC(dev->devfn) != 1)
3997 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1));
4001 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
4002 * SKUs function 1 is present and is a legacy IDE controller, in other
4003 * SKUs this function is not present, making this a ghost requester.
4004 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
4006 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
4007 quirk_dma_func1_alias);
4008 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
4009 quirk_dma_func1_alias);
4010 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
4011 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
4012 quirk_dma_func1_alias);
4013 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
4014 quirk_dma_func1_alias);
4015 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
4016 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
4017 quirk_dma_func1_alias);
4018 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
4019 quirk_dma_func1_alias);
4020 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
4021 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
4022 quirk_dma_func1_alias);
4023 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
4024 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
4025 quirk_dma_func1_alias);
4026 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
4027 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
4028 quirk_dma_func1_alias);
4029 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
4030 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
4031 quirk_dma_func1_alias);
4032 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */
4033 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215,
4034 quirk_dma_func1_alias);
4035 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
4036 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
4037 quirk_dma_func1_alias);
4038 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
4039 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
4040 quirk_dma_func1_alias);
4041 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9235,
4042 quirk_dma_func1_alias);
4043 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
4044 quirk_dma_func1_alias);
4045 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
4046 quirk_dma_func1_alias);
4047 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
4048 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
4049 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
4050 quirk_dma_func1_alias);
4051 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
4052 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4053 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4054 quirk_dma_func1_alias);
4057 * Some devices DMA with the wrong devfn, not just the wrong function.
4058 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4059 * the alias is "fixed" and independent of the device devfn.
4061 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4062 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4063 * single device on the secondary bus. In reality, the single exposed
4064 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4065 * that provides a bridge to the internal bus of the I/O processor. The
4066 * controller supports private devices, which can be hidden from PCI config
4067 * space. In the case of the Adaptec 3405, a private device at 01.0
4068 * appears to be the DMA engine, which therefore needs to become a DMA
4069 * alias for the device.
4071 static const struct pci_device_id fixed_dma_alias_tbl[] = {
4072 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4073 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4074 .driver_data = PCI_DEVFN(1, 0) },
4075 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4076 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4077 .driver_data = PCI_DEVFN(1, 0) },
4081 static void quirk_fixed_dma_alias(struct pci_dev *dev)
4083 const struct pci_device_id *id;
4085 id = pci_match_id(fixed_dma_alias_tbl, dev);
4087 pci_add_dma_alias(dev, id->driver_data);
4090 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4093 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4094 * using the wrong DMA alias for the device. Some of these devices can be
4095 * used as either forward or reverse bridges, so we need to test whether the
4096 * device is operating in the correct mode. We could probably apply this
4097 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4098 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4099 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4101 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4103 if (!pci_is_root_bus(pdev->bus) &&
4104 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4105 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4106 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4107 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4109 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4110 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4111 quirk_use_pcie_bridge_dma_alias);
4112 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4113 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4114 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4115 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4116 /* ITE 8893 has the same problem as the 8892 */
4117 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4118 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4119 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4122 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4123 * be added as aliases to the DMA device in order to allow buffer access
4124 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4125 * programmed in the EEPROM.
4127 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4129 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0));
4130 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0));
4131 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3));
4133 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4134 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4137 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
4138 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
4140 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
4141 * when IOMMU is enabled. These aliases allow computational unit access to
4142 * host memory. These aliases mark the whole VCA device as one IOMMU
4145 * All possible slot numbers (0x20) are used, since we are unable to tell
4146 * what slot is used on other side. This quirk is intended for both host
4147 * and computational unit sides. The VCA devices have up to five functions
4148 * (four for DMA channels and one additional).
4150 static void quirk_pex_vca_alias(struct pci_dev *pdev)
4152 const unsigned int num_pci_slots = 0x20;
4155 for (slot = 0; slot < num_pci_slots; slot++) {
4156 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0));
4157 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x1));
4158 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x2));
4159 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x3));
4160 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x4));
4163 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
4164 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
4165 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
4166 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
4167 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
4168 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
4171 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4172 * associated not at the root bus, but at a bridge below. This quirk avoids
4173 * generating invalid DMA aliases.
4175 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4177 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4179 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4180 quirk_bridge_cavm_thrx2_pcie_root);
4181 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4182 quirk_bridge_cavm_thrx2_pcie_root);
4185 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4186 * class code. Fix it.
4188 static void quirk_tw686x_class(struct pci_dev *pdev)
4190 u32 class = pdev->class;
4192 /* Use "Multimedia controller" class */
4193 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4194 dev_info(&pdev->dev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4195 class, pdev->class);
4197 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4198 quirk_tw686x_class);
4199 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4200 quirk_tw686x_class);
4201 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4202 quirk_tw686x_class);
4203 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4204 quirk_tw686x_class);
4207 * Some devices have problems with Transaction Layer Packets with the Relaxed
4208 * Ordering Attribute set. Such devices should mark themselves and other
4209 * Device Drivers should check before sending TLPs with RO set.
4211 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4213 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4214 dev_info(&dev->dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4218 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4219 * Complex has a Flow Control Credit issue which can cause performance
4220 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4222 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4223 quirk_relaxedordering_disable);
4224 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4225 quirk_relaxedordering_disable);
4226 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4227 quirk_relaxedordering_disable);
4228 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4229 quirk_relaxedordering_disable);
4230 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4231 quirk_relaxedordering_disable);
4232 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4233 quirk_relaxedordering_disable);
4234 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4235 quirk_relaxedordering_disable);
4236 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4237 quirk_relaxedordering_disable);
4238 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4239 quirk_relaxedordering_disable);
4240 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4241 quirk_relaxedordering_disable);
4242 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4243 quirk_relaxedordering_disable);
4244 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4245 quirk_relaxedordering_disable);
4246 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4247 quirk_relaxedordering_disable);
4248 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4249 quirk_relaxedordering_disable);
4250 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4251 quirk_relaxedordering_disable);
4252 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4253 quirk_relaxedordering_disable);
4254 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4255 quirk_relaxedordering_disable);
4256 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4257 quirk_relaxedordering_disable);
4258 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4259 quirk_relaxedordering_disable);
4260 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4261 quirk_relaxedordering_disable);
4262 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4263 quirk_relaxedordering_disable);
4264 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4265 quirk_relaxedordering_disable);
4266 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4267 quirk_relaxedordering_disable);
4268 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4269 quirk_relaxedordering_disable);
4270 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4271 quirk_relaxedordering_disable);
4272 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4273 quirk_relaxedordering_disable);
4274 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4275 quirk_relaxedordering_disable);
4276 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4277 quirk_relaxedordering_disable);
4280 * The AMD ARM A1100 (AKA "SEATTLE") SoC has a bug in its PCIe Root Complex
4281 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4282 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4283 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4284 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4285 * November 10, 2010). As a result, on this platform we can't use Relaxed
4286 * Ordering for Upstream TLPs.
4288 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4289 quirk_relaxedordering_disable);
4290 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4291 quirk_relaxedordering_disable);
4292 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4293 quirk_relaxedordering_disable);
4296 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4297 * values for the Attribute as were supplied in the header of the
4298 * corresponding Request, except as explicitly allowed when IDO is used."
4300 * If a non-compliant device generates a completion with a different
4301 * attribute than the request, the receiver may accept it (which itself
4302 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4303 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4304 * device access timeout.
4306 * If the non-compliant device generates completions with zero attributes
4307 * (instead of copying the attributes from the request), we can work around
4308 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4309 * upstream devices so they always generate requests with zero attributes.
4311 * This affects other devices under the same Root Port, but since these
4312 * attributes are performance hints, there should be no functional problem.
4314 * Note that Configuration Space accesses are never supposed to have TLP
4315 * Attributes, so we're safe waiting till after any Configuration Space
4316 * accesses to do the Root Port fixup.
4318 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4320 struct pci_dev *root_port = pci_find_pcie_root_port(pdev);
4323 dev_warn(&pdev->dev, "PCIe Completion erratum may cause device errors\n");
4327 dev_info(&root_port->dev, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4328 dev_name(&pdev->dev));
4329 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4330 PCI_EXP_DEVCTL_RELAX_EN |
4331 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4335 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4336 * Completion it generates.
4338 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4341 * This mask/compare operation selects for Physical Function 4 on a
4342 * T5. We only need to fix up the Root Port once for any of the
4343 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4344 * 0x54xx so we use that one,
4346 if ((pdev->device & 0xff00) == 0x5400)
4347 quirk_disable_root_port_attributes(pdev);
4349 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4350 quirk_chelsio_T5_disable_root_port_attributes);
4353 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided
4355 * @acs_ctrl_req: Bitmask of desired ACS controls
4356 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by
4357 * the hardware design
4359 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included
4360 * in @acs_ctrl_ena, i.e., the device provides all the access controls the
4361 * caller desires. Return 0 otherwise.
4363 static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena)
4365 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req)
4371 * AMD has indicated that the devices below do not support peer-to-peer
4372 * in any system where they are found in the southbridge with an AMD
4373 * IOMMU in the system. Multifunction devices that do not support
4374 * peer-to-peer between functions can claim to support a subset of ACS.
4375 * Such devices effectively enable request redirect (RR) and completion
4376 * redirect (CR) since all transactions are redirected to the upstream
4379 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
4380 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
4381 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
4383 * 1002:4385 SBx00 SMBus Controller
4384 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4385 * 1002:4383 SBx00 Azalia (Intel HDA)
4386 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4387 * 1002:4384 SBx00 PCI to PCI Bridge
4388 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4390 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4392 * 1022:780f [AMD] FCH PCI Bridge
4393 * 1022:7809 [AMD] FCH USB OHCI Controller
4395 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4398 struct acpi_table_header *header = NULL;
4401 /* Targeting multifunction devices on the SB (appears on root bus) */
4402 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4405 /* The IVRS table describes the AMD IOMMU */
4406 status = acpi_get_table("IVRS", 0, &header);
4407 if (ACPI_FAILURE(status))
4410 acpi_put_table(header);
4412 /* Filter out flags not applicable to multifunction */
4413 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4415 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR);
4421 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4423 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4426 switch (dev->device) {
4428 * Effectively selects all downstream ports for whole ThunderX1
4429 * (which represents 8 SoCs).
4431 case 0xa000 ... 0xa7ff: /* ThunderX1 */
4432 case 0xaf84: /* ThunderX2 */
4433 case 0xb884: /* ThunderX3 */
4440 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4442 if (!pci_quirk_cavium_acs_match(dev))
4446 * Cavium Root Ports don't advertise an ACS capability. However,
4447 * the RTL internally implements similar protection as if ACS had
4448 * Source Validation, Request Redirection, Completion Redirection,
4449 * and Upstream Forwarding features enabled. Assert that the
4450 * hardware implements and enables equivalent ACS functionality for
4453 return pci_acs_ctrl_enabled(acs_flags,
4454 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4457 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4460 * X-Gene root matching this quirk do not allow peer-to-peer
4461 * transactions with others, allowing masking out these bits as if they
4462 * were unimplemented in the ACS capability.
4464 return pci_acs_ctrl_enabled(acs_flags,
4465 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4469 * Many Intel PCH Root Ports do provide ACS-like features to disable peer
4470 * transactions and validate bus numbers in requests, but do not provide an
4471 * actual PCIe ACS capability. This is the list of device IDs known to fall
4472 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4474 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4476 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4477 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4478 /* Cougarpoint PCH */
4479 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4480 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4481 /* Pantherpoint PCH */
4482 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4483 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4484 /* Lynxpoint-H PCH */
4485 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4486 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4487 /* Lynxpoint-LP PCH */
4488 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4489 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4491 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4492 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4493 /* Patsburg (X79) PCH */
4494 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4495 /* Wellsburg (X99) PCH */
4496 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4497 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4498 /* Lynx Point (9 series) PCH */
4499 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4502 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4506 /* Filter out a few obvious non-matches first */
4507 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4510 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4511 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4517 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4519 if (!pci_quirk_intel_pch_acs_match(dev))
4522 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK)
4523 return pci_acs_ctrl_enabled(acs_flags,
4524 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4526 return pci_acs_ctrl_enabled(acs_flags, 0);
4530 * These QCOM Root Ports do provide ACS-like features to disable peer
4531 * transactions and validate bus numbers in requests, but do not provide an
4532 * actual PCIe ACS capability. Hardware supports source validation but it
4533 * will report the issue as Completer Abort instead of ACS Violation.
4534 * Hardware doesn't support peer-to-peer and each Root Port is a Root
4535 * Complex with unique segment numbers. It is not possible for one Root
4536 * Port to pass traffic to another Root Port. All PCIe transactions are
4537 * terminated inside the Root Port.
4539 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4541 return pci_acs_ctrl_enabled(acs_flags,
4542 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4546 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4547 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4548 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4549 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4550 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4551 * control register is at offset 8 instead of 6 and we should probably use
4552 * dword accesses to them. This applies to the following PCI Device IDs, as
4553 * found in volume 1 of the datasheet[2]:
4555 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4556 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4558 * N.B. This doesn't fix what lspci shows.
4560 * The 100 series chipset specification update includes this as errata #23[3].
4562 * The 200 series chipset (Union Point) has the same bug according to the
4563 * specification update (Intel 200 Series Chipset Family Platform Controller
4564 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4565 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4568 * 0xa290-0xa29f PCI Express Root port #{0-16}
4569 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4571 * Mobile chipsets are also affected, 7th & 8th Generation
4572 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4573 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4574 * Processor Family I/O for U Quad Core Platforms Specification Update,
4575 * August 2017, Revision 002, Document#: 334660-002)[6]
4576 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4577 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4578 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4580 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4582 * [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4583 * [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4584 * [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4585 * [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4586 * [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4587 * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html
4588 * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html
4590 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4592 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4595 switch (dev->device) {
4596 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4597 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4598 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4605 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4607 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4612 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4615 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4619 /* see pci_acs_flags_enabled() */
4620 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4621 acs_flags &= (cap | PCI_ACS_EC);
4623 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4625 return pci_acs_ctrl_enabled(acs_flags, ctrl);
4628 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4631 * SV, TB, and UF are not relevant to multifunction endpoints.
4633 * Multifunction devices are only required to implement RR, CR, and DT
4634 * in their ACS capability if they support peer-to-peer transactions.
4635 * Devices matching this quirk have been verified by the vendor to not
4636 * perform peer-to-peer with other functions, allowing us to mask out
4637 * these bits as if they were unimplemented in the ACS capability.
4639 return pci_acs_ctrl_enabled(acs_flags,
4640 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4641 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4644 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags)
4647 * Intel RCiEP's are required to allow p2p only on translated
4648 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16,
4649 * "Root-Complex Peer to Peer Considerations".
4651 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END)
4654 return pci_acs_ctrl_enabled(acs_flags,
4655 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4658 static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4661 * iProc PAXB Root Ports don't advertise an ACS capability, but
4662 * they do not allow peer-to-peer transactions between Root Ports.
4663 * Allow each Root Port to be in a separate IOMMU group by masking
4666 return pci_acs_ctrl_enabled(acs_flags,
4667 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4670 static const struct pci_dev_acs_enabled {
4673 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4674 } pci_dev_acs_enabled[] = {
4675 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4676 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4677 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4678 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4679 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4680 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4681 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4682 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4683 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4684 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4685 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4686 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4687 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4688 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4689 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4690 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4691 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4692 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4693 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4694 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4695 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4696 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4697 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4698 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4699 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4700 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4701 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4702 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4703 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4704 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4705 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4707 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4708 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4709 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4710 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4711 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4712 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4713 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4715 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4716 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4717 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4718 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4719 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4720 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4721 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4722 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4724 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4725 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4726 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4728 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4729 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4730 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4731 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4732 /* 82571 (Quads omitted due to non-ACS switch) */
4733 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4734 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4735 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4736 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4738 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4739 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4740 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs },
4741 /* QCOM QDF2xxx root ports */
4742 { 0x17cb, 0x400, pci_quirk_qcom_rp_acs },
4743 { 0x17cb, 0x401, pci_quirk_qcom_rp_acs },
4744 /* Intel PCH root ports */
4745 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4746 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4747 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4748 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4749 /* Cavium ThunderX */
4750 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4751 /* Cavium multi-function devices */
4752 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },
4753 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },
4754 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },
4756 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4757 /* Ampere Computing */
4758 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
4759 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
4760 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
4761 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
4762 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
4763 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
4764 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
4765 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
4766 /* Broadcom multi-function device */
4767 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
4768 { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs },
4769 { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs },
4770 { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs },
4771 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
4776 * pci_dev_specific_acs_enabled - check whether device provides ACS controls
4778 * @acs_flags: Bitmask of desired ACS controls
4781 * -ENOTTY: No quirk applies to this device; we can't tell whether the
4782 * device provides the desired controls
4783 * 0: Device does not provide all the desired controls
4784 * >0: Device provides all the controls in @acs_flags
4786 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4788 const struct pci_dev_acs_enabled *i;
4792 * Allow devices that do not expose standard PCIe ACS capabilities
4793 * or control to indicate their support here. Multi-function express
4794 * devices which do not allow internal peer-to-peer between functions,
4795 * but do not implement PCIe ACS may wish to return true here.
4797 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4798 if ((i->vendor == dev->vendor ||
4799 i->vendor == (u16)PCI_ANY_ID) &&
4800 (i->device == dev->device ||
4801 i->device == (u16)PCI_ANY_ID)) {
4802 ret = i->acs_enabled(dev, acs_flags);
4811 /* Config space offset of Root Complex Base Address register */
4812 #define INTEL_LPC_RCBA_REG 0xf0
4813 /* 31:14 RCBA address */
4814 #define INTEL_LPC_RCBA_MASK 0xffffc000
4816 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
4818 /* Backbone Scratch Pad Register */
4819 #define INTEL_BSPR_REG 0x1104
4820 /* Backbone Peer Non-Posted Disable */
4821 #define INTEL_BSPR_REG_BPNPD (1 << 8)
4822 /* Backbone Peer Posted Disable */
4823 #define INTEL_BSPR_REG_BPPD (1 << 9)
4825 /* Upstream Peer Decode Configuration Register */
4826 #define INTEL_UPDCR_REG 0x1014
4827 /* 5:0 Peer Decode Enable bits */
4828 #define INTEL_UPDCR_REG_MASK 0x3f
4830 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
4832 u32 rcba, bspr, updcr;
4833 void __iomem *rcba_mem;
4836 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4837 * are D28:F* and therefore get probed before LPC, thus we can't
4838 * use pci_get_slot/pci_read_config_dword here.
4840 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
4841 INTEL_LPC_RCBA_REG, &rcba);
4842 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
4845 rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
4846 PAGE_ALIGN(INTEL_UPDCR_REG));
4851 * The BSPR can disallow peer cycles, but it's set by soft strap and
4852 * therefore read-only. If both posted and non-posted peer cycles are
4853 * disallowed, we're ok. If either are allowed, then we need to use
4854 * the UPDCR to disable peer decodes for each port. This provides the
4855 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
4857 bspr = readl(rcba_mem + INTEL_BSPR_REG);
4858 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
4859 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
4860 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
4861 if (updcr & INTEL_UPDCR_REG_MASK) {
4862 dev_info(&dev->dev, "Disabling UPDCR peer decodes\n");
4863 updcr &= ~INTEL_UPDCR_REG_MASK;
4864 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
4872 /* Miscellaneous Port Configuration register */
4873 #define INTEL_MPC_REG 0xd8
4874 /* MPC: Invalid Receive Bus Number Check Enable */
4875 #define INTEL_MPC_REG_IRBNCE (1 << 26)
4877 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
4882 * When enabled, the IRBNCE bit of the MPC register enables the
4883 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
4884 * ensures that requester IDs fall within the bus number range
4885 * of the bridge. Enable if not already.
4887 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
4888 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
4889 dev_info(&dev->dev, "Enabling MPC IRBNCE\n");
4890 mpc |= INTEL_MPC_REG_IRBNCE;
4891 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
4895 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
4897 if (!pci_quirk_intel_pch_acs_match(dev))
4900 if (pci_quirk_enable_intel_lpc_acs(dev)) {
4901 dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n");
4905 pci_quirk_enable_intel_rp_mpc_acs(dev);
4907 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
4909 dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n");
4914 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
4919 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4922 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4926 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4927 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4929 ctrl |= (cap & PCI_ACS_SV);
4930 ctrl |= (cap & PCI_ACS_RR);
4931 ctrl |= (cap & PCI_ACS_CR);
4932 ctrl |= (cap & PCI_ACS_UF);
4934 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
4936 dev_info(&dev->dev, "Intel SPT PCH root port ACS workaround enabled\n");
4941 static const struct pci_dev_enable_acs {
4944 int (*enable_acs)(struct pci_dev *dev);
4945 } pci_dev_enable_acs[] = {
4946 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_pch_acs },
4947 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_spt_pch_acs },
4951 int pci_dev_specific_enable_acs(struct pci_dev *dev)
4953 const struct pci_dev_enable_acs *i;
4956 for (i = pci_dev_enable_acs; i->enable_acs; i++) {
4957 if ((i->vendor == dev->vendor ||
4958 i->vendor == (u16)PCI_ANY_ID) &&
4959 (i->device == dev->device ||
4960 i->device == (u16)PCI_ANY_ID)) {
4961 ret = i->enable_acs(dev);
4971 * The PCI capabilities list for Intel DH895xCC VFs (device id 0x0443) with
4972 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
4973 * Next Capability pointer in the MSI Capability Structure should point to
4974 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
4977 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
4982 struct pci_cap_saved_state *state;
4984 /* Bail if the hardware bug is fixed */
4985 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
4988 /* Bail if MSI Capability Structure is not found for some reason */
4989 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
4994 * Bail if Next Capability pointer in the MSI Capability Structure
4995 * is not the expected incorrect 0x00.
4997 pci_read_config_byte(pdev, pos + 1, &next_cap);
5002 * PCIe Capability Structure is expected to be at 0x50 and should
5003 * terminate the list (Next Capability pointer is 0x00). Verify
5004 * Capability Id and Next Capability pointer is as expected.
5005 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
5006 * to correctly set kernel data structures which have already been
5007 * set incorrectly due to the hardware bug.
5010 pci_read_config_word(pdev, pos, ®16);
5011 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
5013 #ifndef PCI_EXP_SAVE_REGS
5014 #define PCI_EXP_SAVE_REGS 7
5016 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
5018 pdev->pcie_cap = pos;
5019 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
5020 pdev->pcie_flags_reg = reg16;
5021 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
5022 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
5024 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
5025 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
5026 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
5027 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
5029 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
5035 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
5039 state->cap.cap_nr = PCI_CAP_ID_EXP;
5040 state->cap.cap_extended = 0;
5041 state->cap.size = size;
5042 cap = (u16 *)&state->cap.data[0];
5043 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
5044 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
5045 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
5046 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
5047 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
5048 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
5049 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
5050 hlist_add_head(&state->next, &pdev->saved_cap_space);
5053 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
5056 * FLR may cause the following to devices to hang:
5058 * AMD Starship/Matisse HD Audio Controller 0x1487
5059 * AMD Starship USB 3.0 Host Controller 0x148c
5060 * AMD Matisse USB 3.0 Host Controller 0x149c
5061 * Intel 82579LM Gigabit Ethernet Controller 0x1502
5062 * Intel 82579V Gigabit Ethernet Controller 0x1503
5065 static void quirk_no_flr(struct pci_dev *dev)
5067 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
5069 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr);
5070 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr);
5071 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
5072 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x7901, quirk_no_flr);
5073 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
5074 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
5076 static void quirk_no_ext_tags(struct pci_dev *pdev)
5078 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
5083 bridge->no_ext_tags = 1;
5084 dev_info(&pdev->dev, "disabling Extended Tags (this device can't handle them)\n");
5086 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5088 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5089 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5090 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5091 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5092 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5093 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5094 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5096 #ifdef CONFIG_PCI_ATS
5098 * Some devices have a broken ATS implementation causing IOMMU stalls.
5099 * Don't use ATS for those devices.
5101 static void quirk_no_ats(struct pci_dev *pdev)
5103 dev_info(&pdev->dev, "disabling ATS (broken on this device)\n");
5107 /* AMD Stoney platform GPU */
5108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats);
5109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_no_ats);
5110 #endif /* CONFIG_PCI_ATS */
5112 /* Freescale PCIe doesn't support MSI in RC mode */
5113 static void quirk_fsl_no_msi(struct pci_dev *pdev)
5115 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5118 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5121 * Although not allowed by the spec, some multi-function devices have
5122 * dependencies of one function (consumer) on another (supplier). For the
5123 * consumer to work in D0, the supplier must also be in D0. Create a
5124 * device link from the consumer to the supplier to enforce this
5125 * dependency. Runtime PM is allowed by default on the consumer to prevent
5126 * it from permanently keeping the supplier awake.
5128 static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5129 unsigned int supplier, unsigned int class,
5130 unsigned int class_shift)
5132 struct pci_dev *supplier_pdev;
5134 if (PCI_FUNC(pdev->devfn) != consumer)
5137 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5139 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5140 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5141 pci_dev_put(supplier_pdev);
5145 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5146 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5147 pci_info(pdev, "D0 power state depends on %s\n",
5148 pci_name(supplier_pdev));
5150 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5151 pci_name(supplier_pdev));
5153 pm_runtime_allow(&pdev->dev);
5154 pci_dev_put(supplier_pdev);
5158 * Create device link for GPUs with integrated HDA controller for streaming
5159 * audio to attached displays.
5161 static void quirk_gpu_hda(struct pci_dev *hda)
5163 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5165 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5166 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5167 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5168 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5169 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5170 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);