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 <asm/dma.h> /* isa_dma_bridge_buggy */
34 * Decoding should be disabled for a PCI device during BAR sizing to avoid
35 * conflict. But doing so may cause problems on host bridge and perhaps other
36 * key system devices. For devices that need to have mmio decoding always-on,
37 * we need to set the dev->mmio_always_on bit.
39 static void quirk_mmio_always_on(struct pci_dev *dev)
41 dev->mmio_always_on = 1;
43 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
44 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
46 /* The Mellanox Tavor device gives false positive parity errors
47 * Mark this device with a broken_parity_status, to allow
48 * PCI scanning code to "skip" this now blacklisted device.
50 static void quirk_mellanox_tavor(struct pci_dev *dev)
52 dev->broken_parity_status = 1; /* This device gives false positives */
54 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, quirk_mellanox_tavor);
55 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, quirk_mellanox_tavor);
57 /* Deal with broken BIOSes that neglect to enable passive release,
58 which can cause problems in combination with the 82441FX/PPro MTRRs */
59 static void quirk_passive_release(struct pci_dev *dev)
61 struct pci_dev *d = NULL;
64 /* We have to make sure a particular bit is set in the PIIX3
65 ISA bridge, so we have to go out and find it. */
66 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
67 pci_read_config_byte(d, 0x82, &dlc);
69 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
71 pci_write_config_byte(d, 0x82, dlc);
75 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
76 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
78 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
79 but VIA don't answer queries. If you happen to have good contacts at VIA
80 ask them for me please -- Alan
82 This appears to be BIOS not version dependent. So presumably there is a
85 static void quirk_isa_dma_hangs(struct pci_dev *dev)
87 if (!isa_dma_bridge_buggy) {
88 isa_dma_bridge_buggy = 1;
89 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
93 * Its not totally clear which chipsets are the problematic ones
94 * We know 82C586 and 82C596 variants are affected.
96 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
97 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
98 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
102 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
105 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
106 * for some HT machines to use C4 w/o hanging.
108 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
113 pci_read_config_dword(dev, 0x40, &pmbase);
114 pmbase = pmbase & 0xff80;
118 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
122 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
125 * Chipsets where PCI->PCI transfers vanish or hang
127 static void quirk_nopcipci(struct pci_dev *dev)
129 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
130 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
131 pci_pci_problems |= PCIPCI_FAIL;
134 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
135 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
137 static void quirk_nopciamd(struct pci_dev *dev)
140 pci_read_config_byte(dev, 0x08, &rev);
143 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
144 pci_pci_problems |= PCIAGP_FAIL;
147 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
150 * Triton requires workarounds to be used by the drivers
152 static void quirk_triton(struct pci_dev *dev)
154 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
155 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
156 pci_pci_problems |= PCIPCI_TRITON;
159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
165 * VIA Apollo KT133 needs PCI latency patch
166 * Made according to a windows driver based patch by George E. Breese
167 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
168 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
169 * the info on which Mr Breese based his work.
171 * Updated based on further information from the site and also on
172 * information provided by VIA
174 static void quirk_vialatency(struct pci_dev *dev)
178 /* Ok we have a potential problem chipset here. Now see if we have
179 a buggy southbridge */
181 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
183 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
184 /* Check for buggy part revisions */
185 if (p->revision < 0x40 || p->revision > 0x42)
188 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
189 if (p == NULL) /* No problem parts */
191 /* Check for buggy part revisions */
192 if (p->revision < 0x10 || p->revision > 0x12)
197 * Ok we have the problem. Now set the PCI master grant to
198 * occur every master grant. The apparent bug is that under high
199 * PCI load (quite common in Linux of course) you can get data
200 * loss when the CPU is held off the bus for 3 bus master requests
201 * This happens to include the IDE controllers....
203 * VIA only apply this fix when an SB Live! is present but under
204 * both Linux and Windows this isn't enough, and we have seen
205 * corruption without SB Live! but with things like 3 UDMA IDE
206 * controllers. So we ignore that bit of the VIA recommendation..
209 pci_read_config_byte(dev, 0x76, &busarb);
210 /* Set bit 4 and bi 5 of byte 76 to 0x01
211 "Master priority rotation on every PCI master grant */
214 pci_write_config_byte(dev, 0x76, busarb);
215 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
222 /* Must restore this on a resume from RAM */
223 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
224 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
225 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
228 * VIA Apollo VP3 needs ETBF on BT848/878
230 static void quirk_viaetbf(struct pci_dev *dev)
232 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
233 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
234 pci_pci_problems |= PCIPCI_VIAETBF;
237 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
239 static void quirk_vsfx(struct pci_dev *dev)
241 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
242 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
243 pci_pci_problems |= PCIPCI_VSFX;
246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
249 * Ali Magik requires workarounds to be used by the drivers
250 * that DMA to AGP space. Latency must be set to 0xA and triton
251 * workaround applied too
252 * [Info kindly provided by ALi]
254 static void quirk_alimagik(struct pci_dev *dev)
256 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
257 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
258 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
265 * Natoma has some interesting boundary conditions with Zoran stuff
268 static void quirk_natoma(struct pci_dev *dev)
270 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
271 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
272 pci_pci_problems |= PCIPCI_NATOMA;
275 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
278 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
280 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
283 * This chip can cause PCI parity errors if config register 0xA0 is read
284 * while DMAs are occurring.
286 static void quirk_citrine(struct pci_dev *dev)
288 dev->cfg_size = 0xA0;
290 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
293 * This chip can cause bus lockups if config addresses above 0x600
294 * are read or written.
296 static void quirk_nfp6000(struct pci_dev *dev)
298 dev->cfg_size = 0x600;
300 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
302 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
304 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
305 static void quirk_extend_bar_to_page(struct pci_dev *dev)
309 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
310 struct resource *r = &dev->resource[i];
312 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
313 r->end = PAGE_SIZE - 1;
315 r->flags |= IORESOURCE_UNSET;
316 dev_info(&dev->dev, "expanded BAR %d to page size: %pR\n",
321 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
324 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
325 * If it's needed, re-allocate the region.
327 static void quirk_s3_64M(struct pci_dev *dev)
329 struct resource *r = &dev->resource[0];
331 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
332 r->flags |= IORESOURCE_UNSET;
337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
340 static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
344 struct pci_bus_region bus_region;
345 struct resource *res = dev->resource + pos;
347 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
352 res->name = pci_name(dev);
353 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
355 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
356 region &= ~(size - 1);
358 /* Convert from PCI bus to resource space */
359 bus_region.start = region;
360 bus_region.end = region + size - 1;
361 pcibios_bus_to_resource(dev->bus, res, &bus_region);
363 dev_info(&dev->dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
364 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
368 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
369 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
370 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
371 * (which conflicts w/ BAR1's memory range).
373 * CS553x's ISA PCI BARs may also be read-only (ref:
374 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
376 static void quirk_cs5536_vsa(struct pci_dev *dev)
378 static char *name = "CS5536 ISA bridge";
380 if (pci_resource_len(dev, 0) != 8) {
381 quirk_io(dev, 0, 8, name); /* SMB */
382 quirk_io(dev, 1, 256, name); /* GPIO */
383 quirk_io(dev, 2, 64, name); /* MFGPT */
384 dev_info(&dev->dev, "%s bug detected (incorrect header); workaround applied\n",
388 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
390 static void quirk_io_region(struct pci_dev *dev, int port,
391 unsigned size, int nr, const char *name)
394 struct pci_bus_region bus_region;
395 struct resource *res = dev->resource + nr;
397 pci_read_config_word(dev, port, ®ion);
398 region &= ~(size - 1);
403 res->name = pci_name(dev);
404 res->flags = IORESOURCE_IO;
406 /* Convert from PCI bus to resource space */
407 bus_region.start = region;
408 bus_region.end = region + size - 1;
409 pcibios_bus_to_resource(dev->bus, res, &bus_region);
411 if (!pci_claim_resource(dev, nr))
412 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
416 * ATI Northbridge setups MCE the processor if you even
417 * read somewhere between 0x3b0->0x3bb or read 0x3d3
419 static void quirk_ati_exploding_mce(struct pci_dev *dev)
421 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
422 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
423 request_region(0x3b0, 0x0C, "RadeonIGP");
424 request_region(0x3d3, 0x01, "RadeonIGP");
426 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
429 * In the AMD NL platform, this device ([1022:7912]) has a class code of
430 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
432 * But the dwc3 driver is a more specific driver for this device, and we'd
433 * prefer to use it instead of xhci. To prevent xhci from claiming the
434 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
435 * defines as "USB device (not host controller)". The dwc3 driver can then
436 * claim it based on its Vendor and Device ID.
438 static void quirk_amd_nl_class(struct pci_dev *pdev)
440 u32 class = pdev->class;
442 /* Use "USB Device (not host controller)" class */
443 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
444 dev_info(&pdev->dev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
447 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
451 * Let's make the southbridge information explicit instead
452 * of having to worry about people probing the ACPI areas,
453 * for example.. (Yes, it happens, and if you read the wrong
454 * ACPI register it will put the machine to sleep with no
455 * way of waking it up again. Bummer).
457 * ALI M7101: Two IO regions pointed to by words at
458 * 0xE0 (64 bytes of ACPI registers)
459 * 0xE2 (32 bytes of SMB registers)
461 static void quirk_ali7101_acpi(struct pci_dev *dev)
463 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
464 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
468 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
471 u32 mask, size, base;
473 pci_read_config_dword(dev, port, &devres);
474 if ((devres & enable) != enable)
476 mask = (devres >> 16) & 15;
477 base = devres & 0xffff;
480 unsigned bit = size >> 1;
481 if ((bit & mask) == bit)
486 * For now we only print it out. Eventually we'll want to
487 * reserve it (at least if it's in the 0x1000+ range), but
488 * let's get enough confirmation reports first.
491 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base,
495 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
498 u32 mask, size, base;
500 pci_read_config_dword(dev, port, &devres);
501 if ((devres & enable) != enable)
503 base = devres & 0xffff0000;
504 mask = (devres & 0x3f) << 16;
507 unsigned bit = size >> 1;
508 if ((bit & mask) == bit)
513 * For now we only print it out. Eventually we'll want to
514 * reserve it, but let's get enough confirmation reports first.
517 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base,
522 * PIIX4 ACPI: Two IO regions pointed to by longwords at
523 * 0x40 (64 bytes of ACPI registers)
524 * 0x90 (16 bytes of SMB registers)
525 * and a few strange programmable PIIX4 device resources.
527 static void quirk_piix4_acpi(struct pci_dev *dev)
531 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
532 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
534 /* Device resource A has enables for some of the other ones */
535 pci_read_config_dword(dev, 0x5c, &res_a);
537 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
538 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
540 /* Device resource D is just bitfields for static resources */
542 /* Device 12 enabled? */
543 if (res_a & (1 << 29)) {
544 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
545 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
547 /* Device 13 enabled? */
548 if (res_a & (1 << 30)) {
549 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
550 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
552 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
553 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
555 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
556 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
558 #define ICH_PMBASE 0x40
559 #define ICH_ACPI_CNTL 0x44
560 #define ICH4_ACPI_EN 0x10
561 #define ICH6_ACPI_EN 0x80
562 #define ICH4_GPIOBASE 0x58
563 #define ICH4_GPIO_CNTL 0x5c
564 #define ICH4_GPIO_EN 0x10
565 #define ICH6_GPIOBASE 0x48
566 #define ICH6_GPIO_CNTL 0x4c
567 #define ICH6_GPIO_EN 0x10
570 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
571 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
572 * 0x58 (64 bytes of GPIO I/O space)
574 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
579 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
580 * with low legacy (and fixed) ports. We don't know the decoding
581 * priority and can't tell whether the legacy device or the one created
582 * here is really at that address. This happens on boards with broken
586 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
587 if (enable & ICH4_ACPI_EN)
588 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
589 "ICH4 ACPI/GPIO/TCO");
591 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
592 if (enable & ICH4_GPIO_EN)
593 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
596 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
597 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
598 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
599 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
600 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
607 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
611 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
612 if (enable & ICH6_ACPI_EN)
613 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
614 "ICH6 ACPI/GPIO/TCO");
616 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
617 if (enable & ICH6_GPIO_EN)
618 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
622 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
627 pci_read_config_dword(dev, reg, &val);
635 * This is not correct. It is 16, 32 or 64 bytes depending on
636 * register D31:F0:ADh bits 5:4.
638 * But this gets us at least _part_ of it.
646 /* Just print it out for now. We should reserve it after more debugging */
647 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
650 static void quirk_ich6_lpc(struct pci_dev *dev)
652 /* Shared ACPI/GPIO decode with all ICH6+ */
653 ich6_lpc_acpi_gpio(dev);
655 /* ICH6-specific generic IO decode */
656 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
657 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
659 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
660 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
662 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
667 pci_read_config_dword(dev, reg, &val);
674 * IO base in bits 15:2, mask in bits 23:18, both
678 mask = (val >> 16) & 0xfc;
681 /* Just print it out for now. We should reserve it after more debugging */
682 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
685 /* ICH7-10 has the same common LPC generic IO decode registers */
686 static void quirk_ich7_lpc(struct pci_dev *dev)
688 /* We share the common ACPI/GPIO decode with ICH6 */
689 ich6_lpc_acpi_gpio(dev);
691 /* And have 4 ICH7+ generic decodes */
692 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
693 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
694 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
695 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
697 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
698 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
699 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
700 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
701 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
702 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
704 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
705 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
706 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
707 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
708 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
709 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
712 * VIA ACPI: One IO region pointed to by longword at
713 * 0x48 or 0x20 (256 bytes of ACPI registers)
715 static void quirk_vt82c586_acpi(struct pci_dev *dev)
717 if (dev->revision & 0x10)
718 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
721 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
724 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
725 * 0x48 (256 bytes of ACPI registers)
726 * 0x70 (128 bytes of hardware monitoring register)
727 * 0x90 (16 bytes of SMB registers)
729 static void quirk_vt82c686_acpi(struct pci_dev *dev)
731 quirk_vt82c586_acpi(dev);
733 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
736 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
738 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
741 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
742 * 0x88 (128 bytes of power management registers)
743 * 0xd0 (16 bytes of SMB registers)
745 static void quirk_vt8235_acpi(struct pci_dev *dev)
747 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
748 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
750 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
753 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
754 * Disable fast back-to-back on the secondary bus segment
756 static void quirk_xio2000a(struct pci_dev *dev)
758 struct pci_dev *pdev;
761 dev_warn(&dev->dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
762 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
763 pci_read_config_word(pdev, PCI_COMMAND, &command);
764 if (command & PCI_COMMAND_FAST_BACK)
765 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
768 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
771 #ifdef CONFIG_X86_IO_APIC
773 #include <asm/io_apic.h>
776 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
777 * devices to the external APIC.
779 * TODO: When we have device-specific interrupt routers,
780 * this code will go away from quirks.
782 static void quirk_via_ioapic(struct pci_dev *dev)
787 tmp = 0; /* nothing routed to external APIC */
789 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
791 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
792 tmp == 0 ? "Disa" : "Ena");
794 /* Offset 0x58: External APIC IRQ output control */
795 pci_write_config_byte(dev, 0x58, tmp);
797 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
798 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
801 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
802 * This leads to doubled level interrupt rates.
803 * Set this bit to get rid of cycle wastage.
804 * Otherwise uncritical.
806 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
809 #define BYPASS_APIC_DEASSERT 8
811 pci_read_config_byte(dev, 0x5B, &misc_control2);
812 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
813 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
814 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
818 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
821 * The AMD io apic can hang the box when an apic irq is masked.
822 * We check all revs >= B0 (yet not in the pre production!) as the bug
823 * is currently marked NoFix
825 * We have multiple reports of hangs with this chipset that went away with
826 * noapic specified. For the moment we assume it's the erratum. We may be wrong
827 * of course. However the advice is demonstrably good even if so..
829 static void quirk_amd_ioapic(struct pci_dev *dev)
831 if (dev->revision >= 0x02) {
832 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
833 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
836 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
837 #endif /* CONFIG_X86_IO_APIC */
839 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
841 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
843 /* Fix for improper SRIOV configuration on Cavium cn88xx RNM device */
844 if (dev->subsystem_device == 0xa118)
845 dev->sriov->link = dev->devfn;
847 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
851 * Some settings of MMRBC can lead to data corruption so block changes.
852 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
854 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
856 if (dev->subordinate && dev->revision <= 0x12) {
857 dev_info(&dev->dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
859 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
862 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
865 * FIXME: it is questionable that quirk_via_acpi
866 * is needed. It shows up as an ISA bridge, and does not
867 * support the PCI_INTERRUPT_LINE register at all. Therefore
868 * it seems like setting the pci_dev's 'irq' to the
869 * value of the ACPI SCI interrupt is only done for convenience.
872 static void quirk_via_acpi(struct pci_dev *d)
875 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
878 pci_read_config_byte(d, 0x42, &irq);
880 if (irq && (irq != 2))
883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
884 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
888 * VIA bridges which have VLink
891 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
893 static void quirk_via_bridge(struct pci_dev *dev)
895 /* See what bridge we have and find the device ranges */
896 switch (dev->device) {
897 case PCI_DEVICE_ID_VIA_82C686:
898 /* The VT82C686 is special, it attaches to PCI and can have
899 any device number. All its subdevices are functions of
900 that single device. */
901 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
902 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
904 case PCI_DEVICE_ID_VIA_8237:
905 case PCI_DEVICE_ID_VIA_8237A:
906 via_vlink_dev_lo = 15;
908 case PCI_DEVICE_ID_VIA_8235:
909 via_vlink_dev_lo = 16;
911 case PCI_DEVICE_ID_VIA_8231:
912 case PCI_DEVICE_ID_VIA_8233_0:
913 case PCI_DEVICE_ID_VIA_8233A:
914 case PCI_DEVICE_ID_VIA_8233C_0:
915 via_vlink_dev_lo = 17;
919 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
920 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
921 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
923 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
924 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
925 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
926 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
929 * quirk_via_vlink - VIA VLink IRQ number update
932 * If the device we are dealing with is on a PIC IRQ we need to
933 * ensure that the IRQ line register which usually is not relevant
934 * for PCI cards, is actually written so that interrupts get sent
935 * to the right place.
936 * We only do this on systems where a VIA south bridge was detected,
937 * and only for VIA devices on the motherboard (see quirk_via_bridge
941 static void quirk_via_vlink(struct pci_dev *dev)
945 /* Check if we have VLink at all */
946 if (via_vlink_dev_lo == -1)
951 /* Don't quirk interrupts outside the legacy IRQ range */
952 if (!new_irq || new_irq > 15)
955 /* Internal device ? */
956 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
957 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
960 /* This is an internal VLink device on a PIC interrupt. The BIOS
961 ought to have set this but may not have, so we redo it */
963 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
964 if (new_irq != irq) {
965 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
967 udelay(15); /* unknown if delay really needed */
968 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
971 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
974 * VIA VT82C598 has its device ID settable and many BIOSes
975 * set it to the ID of VT82C597 for backward compatibility.
976 * We need to switch it off to be able to recognize the real
979 static void quirk_vt82c598_id(struct pci_dev *dev)
981 pci_write_config_byte(dev, 0xfc, 0);
982 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
984 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
987 * CardBus controllers have a legacy base address that enables them
988 * to respond as i82365 pcmcia controllers. We don't want them to
989 * do this even if the Linux CardBus driver is not loaded, because
990 * the Linux i82365 driver does not (and should not) handle CardBus.
992 static void quirk_cardbus_legacy(struct pci_dev *dev)
994 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
996 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
997 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
998 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
999 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1002 * Following the PCI ordering rules is optional on the AMD762. I'm not
1003 * sure what the designers were smoking but let's not inhale...
1005 * To be fair to AMD, it follows the spec by default, its BIOS people
1008 static void quirk_amd_ordering(struct pci_dev *dev)
1011 pci_read_config_dword(dev, 0x4C, &pcic);
1012 if ((pcic & 6) != 6) {
1014 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1015 pci_write_config_dword(dev, 0x4C, pcic);
1016 pci_read_config_dword(dev, 0x84, &pcic);
1017 pcic |= (1 << 23); /* Required in this mode */
1018 pci_write_config_dword(dev, 0x84, pcic);
1021 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1022 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1025 * DreamWorks provided workaround for Dunord I-3000 problem
1027 * This card decodes and responds to addresses not apparently
1028 * assigned to it. We force a larger allocation to ensure that
1029 * nothing gets put too close to it.
1031 static void quirk_dunord(struct pci_dev *dev)
1033 struct resource *r = &dev->resource[1];
1035 r->flags |= IORESOURCE_UNSET;
1039 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1042 * i82380FB mobile docking controller: its PCI-to-PCI bridge
1043 * is subtractive decoding (transparent), and does indicate this
1044 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
1047 static void quirk_transparent_bridge(struct pci_dev *dev)
1049 dev->transparent = 1;
1051 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1052 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1055 * Common misconfiguration of the MediaGX/Geode PCI master that will
1056 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
1057 * datasheets found at http://www.national.com/analog for info on what
1058 * these bits do. <christer@weinigel.se>
1060 static void quirk_mediagx_master(struct pci_dev *dev)
1064 pci_read_config_byte(dev, 0x41, ®);
1067 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1069 pci_write_config_byte(dev, 0x41, reg);
1072 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1073 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1076 * Ensure C0 rev restreaming is off. This is normally done by
1077 * the BIOS but in the odd case it is not the results are corruption
1078 * hence the presence of a Linux check
1080 static void quirk_disable_pxb(struct pci_dev *pdev)
1084 if (pdev->revision != 0x04) /* Only C0 requires this */
1086 pci_read_config_word(pdev, 0x40, &config);
1087 if (config & (1<<6)) {
1089 pci_write_config_word(pdev, 0x40, config);
1090 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
1093 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1094 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1096 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1098 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1101 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1103 pci_read_config_byte(pdev, 0x40, &tmp);
1104 pci_write_config_byte(pdev, 0x40, tmp|1);
1105 pci_write_config_byte(pdev, 0x9, 1);
1106 pci_write_config_byte(pdev, 0xa, 6);
1107 pci_write_config_byte(pdev, 0x40, tmp);
1109 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1110 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1113 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1114 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1115 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1116 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1118 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1120 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1123 * Serverworks CSB5 IDE does not fully support native mode
1125 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1128 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1132 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1133 /* PCI layer will sort out resources */
1136 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1139 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1141 static void quirk_ide_samemode(struct pci_dev *pdev)
1145 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1147 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1148 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1151 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1154 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1157 * Some ATA devices break if put into D3
1160 static void quirk_no_ata_d3(struct pci_dev *pdev)
1162 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1164 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1165 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1166 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1167 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1168 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1169 /* ALi loses some register settings that we cannot then restore */
1170 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1171 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1172 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1173 occur when mode detecting */
1174 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1175 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1177 /* This was originally an Alpha specific thing, but it really fits here.
1178 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1180 static void quirk_eisa_bridge(struct pci_dev *dev)
1182 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1184 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1188 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1189 * is not activated. The myth is that Asus said that they do not want the
1190 * users to be irritated by just another PCI Device in the Win98 device
1191 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1192 * package 2.7.0 for details)
1194 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1195 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1196 * becomes necessary to do this tweak in two steps -- the chosen trigger
1197 * is either the Host bridge (preferred) or on-board VGA controller.
1199 * Note that we used to unhide the SMBus that way on Toshiba laptops
1200 * (Satellite A40 and Tecra M2) but then found that the thermal management
1201 * was done by SMM code, which could cause unsynchronized concurrent
1202 * accesses to the SMBus registers, with potentially bad effects. Thus you
1203 * should be very careful when adding new entries: if SMM is accessing the
1204 * Intel SMBus, this is a very good reason to leave it hidden.
1206 * Likewise, many recent laptops use ACPI for thermal management. If the
1207 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1208 * natively, and keeping the SMBus hidden is the right thing to do. If you
1209 * are about to add an entry in the table below, please first disassemble
1210 * the DSDT and double-check that there is no code accessing the SMBus.
1212 static int asus_hides_smbus;
1214 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1216 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1217 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1218 switch (dev->subsystem_device) {
1219 case 0x8025: /* P4B-LX */
1220 case 0x8070: /* P4B */
1221 case 0x8088: /* P4B533 */
1222 case 0x1626: /* L3C notebook */
1223 asus_hides_smbus = 1;
1225 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1226 switch (dev->subsystem_device) {
1227 case 0x80b1: /* P4GE-V */
1228 case 0x80b2: /* P4PE */
1229 case 0x8093: /* P4B533-V */
1230 asus_hides_smbus = 1;
1232 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1233 switch (dev->subsystem_device) {
1234 case 0x8030: /* P4T533 */
1235 asus_hides_smbus = 1;
1237 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1238 switch (dev->subsystem_device) {
1239 case 0x8070: /* P4G8X Deluxe */
1240 asus_hides_smbus = 1;
1242 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1243 switch (dev->subsystem_device) {
1244 case 0x80c9: /* PU-DLS */
1245 asus_hides_smbus = 1;
1247 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1248 switch (dev->subsystem_device) {
1249 case 0x1751: /* M2N notebook */
1250 case 0x1821: /* M5N notebook */
1251 case 0x1897: /* A6L notebook */
1252 asus_hides_smbus = 1;
1254 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1255 switch (dev->subsystem_device) {
1256 case 0x184b: /* W1N notebook */
1257 case 0x186a: /* M6Ne notebook */
1258 asus_hides_smbus = 1;
1260 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1261 switch (dev->subsystem_device) {
1262 case 0x80f2: /* P4P800-X */
1263 asus_hides_smbus = 1;
1265 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1266 switch (dev->subsystem_device) {
1267 case 0x1882: /* M6V notebook */
1268 case 0x1977: /* A6VA notebook */
1269 asus_hides_smbus = 1;
1271 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1272 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1273 switch (dev->subsystem_device) {
1274 case 0x088C: /* HP Compaq nc8000 */
1275 case 0x0890: /* HP Compaq nc6000 */
1276 asus_hides_smbus = 1;
1278 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1279 switch (dev->subsystem_device) {
1280 case 0x12bc: /* HP D330L */
1281 case 0x12bd: /* HP D530 */
1282 case 0x006a: /* HP Compaq nx9500 */
1283 asus_hides_smbus = 1;
1285 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1286 switch (dev->subsystem_device) {
1287 case 0x12bf: /* HP xw4100 */
1288 asus_hides_smbus = 1;
1290 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1291 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1292 switch (dev->subsystem_device) {
1293 case 0xC00C: /* Samsung P35 notebook */
1294 asus_hides_smbus = 1;
1296 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1297 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1298 switch (dev->subsystem_device) {
1299 case 0x0058: /* Compaq Evo N620c */
1300 asus_hides_smbus = 1;
1302 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1303 switch (dev->subsystem_device) {
1304 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1305 /* Motherboard doesn't have Host bridge
1306 * subvendor/subdevice IDs, therefore checking
1307 * its on-board VGA controller */
1308 asus_hides_smbus = 1;
1310 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1311 switch (dev->subsystem_device) {
1312 case 0x00b8: /* Compaq Evo D510 CMT */
1313 case 0x00b9: /* Compaq Evo D510 SFF */
1314 case 0x00ba: /* Compaq Evo D510 USDT */
1315 /* Motherboard doesn't have Host bridge
1316 * subvendor/subdevice IDs and on-board VGA
1317 * controller is disabled if an AGP card is
1318 * inserted, therefore checking USB UHCI
1320 asus_hides_smbus = 1;
1322 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1323 switch (dev->subsystem_device) {
1324 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1325 /* Motherboard doesn't have host bridge
1326 * subvendor/subdevice IDs, therefore checking
1327 * its on-board VGA controller */
1328 asus_hides_smbus = 1;
1332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1347 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1351 if (likely(!asus_hides_smbus))
1354 pci_read_config_word(dev, 0xF2, &val);
1356 pci_write_config_word(dev, 0xF2, val & (~0x8));
1357 pci_read_config_word(dev, 0xF2, &val);
1359 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1362 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1370 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1371 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1372 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1373 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1374 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1375 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1376 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1377 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1378 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1380 /* It appears we just have one such device. If not, we have a warning */
1381 static void __iomem *asus_rcba_base;
1382 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1386 if (likely(!asus_hides_smbus))
1388 WARN_ON(asus_rcba_base);
1390 pci_read_config_dword(dev, 0xF0, &rcba);
1391 /* use bits 31:14, 16 kB aligned */
1392 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1393 if (asus_rcba_base == NULL)
1397 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1401 if (likely(!asus_hides_smbus || !asus_rcba_base))
1403 /* read the Function Disable register, dword mode only */
1404 val = readl(asus_rcba_base + 0x3418);
1405 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1408 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1410 if (likely(!asus_hides_smbus || !asus_rcba_base))
1412 iounmap(asus_rcba_base);
1413 asus_rcba_base = NULL;
1414 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1417 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1419 asus_hides_smbus_lpc_ich6_suspend(dev);
1420 asus_hides_smbus_lpc_ich6_resume_early(dev);
1421 asus_hides_smbus_lpc_ich6_resume(dev);
1423 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1424 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1425 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1426 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1429 * SiS 96x south bridge: BIOS typically hides SMBus device...
1431 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1434 pci_read_config_byte(dev, 0x77, &val);
1436 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1437 pci_write_config_byte(dev, 0x77, val & ~0x10);
1440 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1443 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1444 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1445 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1446 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1447 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1450 * ... This is further complicated by the fact that some SiS96x south
1451 * bridges pretend to be 85C503/5513 instead. In that case see if we
1452 * spotted a compatible north bridge to make sure.
1453 * (pci_find_device doesn't work yet)
1455 * We can also enable the sis96x bit in the discovery register..
1457 #define SIS_DETECT_REGISTER 0x40
1459 static void quirk_sis_503(struct pci_dev *dev)
1464 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1465 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1466 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1467 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1468 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1473 * Ok, it now shows up as a 96x.. run the 96x quirk by
1474 * hand in case it has already been processed.
1475 * (depends on link order, which is apparently not guaranteed)
1477 dev->device = devid;
1478 quirk_sis_96x_smbus(dev);
1480 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1481 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1485 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1486 * and MC97 modem controller are disabled when a second PCI soundcard is
1487 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1490 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1493 int asus_hides_ac97 = 0;
1495 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1496 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1497 asus_hides_ac97 = 1;
1500 if (!asus_hides_ac97)
1503 pci_read_config_byte(dev, 0x50, &val);
1505 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1506 pci_read_config_byte(dev, 0x50, &val);
1508 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1511 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1515 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1517 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1520 * If we are using libata we can drive this chip properly but must
1521 * do this early on to make the additional device appear during
1524 static void quirk_jmicron_ata(struct pci_dev *pdev)
1526 u32 conf1, conf5, class;
1529 /* Only poke fn 0 */
1530 if (PCI_FUNC(pdev->devfn))
1533 pci_read_config_dword(pdev, 0x40, &conf1);
1534 pci_read_config_dword(pdev, 0x80, &conf5);
1536 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1537 conf5 &= ~(1 << 24); /* Clear bit 24 */
1539 switch (pdev->device) {
1540 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1541 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1542 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1543 /* The controller should be in single function ahci mode */
1544 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1547 case PCI_DEVICE_ID_JMICRON_JMB365:
1548 case PCI_DEVICE_ID_JMICRON_JMB366:
1549 /* Redirect IDE second PATA port to the right spot */
1552 case PCI_DEVICE_ID_JMICRON_JMB361:
1553 case PCI_DEVICE_ID_JMICRON_JMB363:
1554 case PCI_DEVICE_ID_JMICRON_JMB369:
1555 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1556 /* Set the class codes correctly and then direct IDE 0 */
1557 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1560 case PCI_DEVICE_ID_JMICRON_JMB368:
1561 /* The controller should be in single function IDE mode */
1562 conf1 |= 0x00C00000; /* Set 22, 23 */
1566 pci_write_config_dword(pdev, 0x40, conf1);
1567 pci_write_config_dword(pdev, 0x80, conf5);
1569 /* Update pdev accordingly */
1570 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1571 pdev->hdr_type = hdr & 0x7f;
1572 pdev->multifunction = !!(hdr & 0x80);
1574 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1575 pdev->class = class >> 8;
1577 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1578 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1579 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1580 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1581 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1582 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1583 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1584 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1585 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1586 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1587 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1588 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1589 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1590 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1591 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1592 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1593 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1594 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1598 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1600 if (dev->multifunction) {
1601 device_disable_async_suspend(&dev->dev);
1602 dev_info(&dev->dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1605 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1606 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1607 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1608 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1610 #ifdef CONFIG_X86_IO_APIC
1611 static void quirk_alder_ioapic(struct pci_dev *pdev)
1615 if ((pdev->class >> 8) != 0xff00)
1618 /* the first BAR is the location of the IO APIC...we must
1619 * not touch this (and it's already covered by the fixmap), so
1620 * forcibly insert it into the resource tree */
1621 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1622 insert_resource(&iomem_resource, &pdev->resource[0]);
1624 /* The next five BARs all seem to be rubbish, so just clean
1626 for (i = 1; i < 6; i++)
1627 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1629 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1632 static void quirk_pcie_mch(struct pci_dev *pdev)
1636 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1637 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1638 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1640 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1643 * It's possible for the MSI to get corrupted if shpc and acpi
1644 * are used together on certain PXH-based systems.
1646 static void quirk_pcie_pxh(struct pci_dev *dev)
1649 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1651 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1652 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1653 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1654 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1655 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1658 * Some Intel PCI Express chipsets have trouble with downstream
1659 * device power management.
1661 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1663 pci_pm_d3_delay = 120;
1667 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1668 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1669 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1670 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1671 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1672 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1673 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1674 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1678 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1679 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1680 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1685 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1687 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1689 static void quirk_radeon_pm(struct pci_dev *dev)
1691 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1692 dev->subsystem_device == 0x00e2) {
1693 if (dev->d3_delay < 20) {
1695 dev_info(&dev->dev, "extending delay after power-on from D3 to %d msec\n",
1700 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1702 #ifdef CONFIG_X86_IO_APIC
1703 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1705 noioapicreroute = 1;
1706 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1711 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1713 * Systems to exclude from boot interrupt reroute quirks
1716 .callback = dmi_disable_ioapicreroute,
1717 .ident = "ASUSTek Computer INC. M2N-LR",
1719 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1720 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1727 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1728 * remap the original interrupt in the linux kernel to the boot interrupt, so
1729 * that a PCI device's interrupt handler is installed on the boot interrupt
1732 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1734 dmi_check_system(boot_interrupt_dmi_table);
1735 if (noioapicquirk || noioapicreroute)
1738 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1739 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1740 dev->vendor, dev->device);
1742 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1743 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1744 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1745 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1746 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1747 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1749 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1750 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1751 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1752 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1753 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1754 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1755 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1756 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1757 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1760 * On some chipsets we can disable the generation of legacy INTx boot
1765 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1766 * 300641-004US, section 5.7.3.
1768 #define INTEL_6300_IOAPIC_ABAR 0x40
1769 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1771 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1773 u16 pci_config_word;
1778 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1779 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1780 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1782 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1783 dev->vendor, dev->device);
1785 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1786 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1789 * disable boot interrupts on HT-1000
1791 #define BC_HT1000_FEATURE_REG 0x64
1792 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1793 #define BC_HT1000_MAP_IDX 0xC00
1794 #define BC_HT1000_MAP_DATA 0xC01
1796 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1798 u32 pci_config_dword;
1804 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1805 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1806 BC_HT1000_PIC_REGS_ENABLE);
1808 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1809 outb(irq, BC_HT1000_MAP_IDX);
1810 outb(0x00, BC_HT1000_MAP_DATA);
1813 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1815 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1816 dev->vendor, dev->device);
1818 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1819 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1822 * disable boot interrupts on AMD and ATI chipsets
1825 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1826 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1827 * (due to an erratum).
1829 #define AMD_813X_MISC 0x40
1830 #define AMD_813X_NOIOAMODE (1<<0)
1831 #define AMD_813X_REV_B1 0x12
1832 #define AMD_813X_REV_B2 0x13
1834 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1836 u32 pci_config_dword;
1840 if ((dev->revision == AMD_813X_REV_B1) ||
1841 (dev->revision == AMD_813X_REV_B2))
1844 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1845 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1846 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1848 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1849 dev->vendor, dev->device);
1851 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1852 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1853 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1854 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1856 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1858 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1860 u16 pci_config_word;
1865 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1866 if (!pci_config_word) {
1867 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] already disabled\n",
1868 dev->vendor, dev->device);
1871 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1872 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1873 dev->vendor, dev->device);
1875 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1876 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1877 #endif /* CONFIG_X86_IO_APIC */
1880 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1881 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1882 * Re-allocate the region if needed...
1884 static void quirk_tc86c001_ide(struct pci_dev *dev)
1886 struct resource *r = &dev->resource[0];
1888 if (r->start & 0x8) {
1889 r->flags |= IORESOURCE_UNSET;
1894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1895 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1896 quirk_tc86c001_ide);
1899 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
1900 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
1901 * being read correctly if bit 7 of the base address is set.
1902 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
1903 * Re-allocate the regions to a 256-byte boundary if necessary.
1905 static void quirk_plx_pci9050(struct pci_dev *dev)
1909 /* Fixed in revision 2 (PCI 9052). */
1910 if (dev->revision >= 2)
1912 for (bar = 0; bar <= 1; bar++)
1913 if (pci_resource_len(dev, bar) == 0x80 &&
1914 (pci_resource_start(dev, bar) & 0x80)) {
1915 struct resource *r = &dev->resource[bar];
1916 dev_info(&dev->dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
1918 r->flags |= IORESOURCE_UNSET;
1923 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
1926 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
1927 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
1928 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
1929 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
1931 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
1934 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
1935 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
1937 static void quirk_netmos(struct pci_dev *dev)
1939 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1940 unsigned int num_serial = dev->subsystem_device & 0xf;
1943 * These Netmos parts are multiport serial devices with optional
1944 * parallel ports. Even when parallel ports are present, they
1945 * are identified as class SERIAL, which means the serial driver
1946 * will claim them. To prevent this, mark them as class OTHER.
1947 * These combo devices should be claimed by parport_serial.
1949 * The subdevice ID is of the form 0x00PS, where <P> is the number
1950 * of parallel ports and <S> is the number of serial ports.
1952 switch (dev->device) {
1953 case PCI_DEVICE_ID_NETMOS_9835:
1954 /* Well, this rule doesn't hold for the following 9835 device */
1955 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1956 dev->subsystem_device == 0x0299)
1958 case PCI_DEVICE_ID_NETMOS_9735:
1959 case PCI_DEVICE_ID_NETMOS_9745:
1960 case PCI_DEVICE_ID_NETMOS_9845:
1961 case PCI_DEVICE_ID_NETMOS_9855:
1963 dev_info(&dev->dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
1964 dev->device, num_parallel, num_serial);
1965 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1966 (dev->class & 0xff);
1970 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
1971 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
1974 * Quirk non-zero PCI functions to route VPD access through function 0 for
1975 * devices that share VPD resources between functions. The functions are
1976 * expected to be identical devices.
1978 static void quirk_f0_vpd_link(struct pci_dev *dev)
1982 if (!PCI_FUNC(dev->devfn))
1985 f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
1989 if (f0->vpd && dev->class == f0->class &&
1990 dev->vendor == f0->vendor && dev->device == f0->device)
1991 dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
1995 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
1996 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
1998 static void quirk_e100_interrupt(struct pci_dev *dev)
2004 switch (dev->device) {
2005 /* PCI IDs taken from drivers/net/e100.c */
2007 case 0x1030 ... 0x1034:
2008 case 0x1038 ... 0x103E:
2009 case 0x1050 ... 0x1057:
2011 case 0x1064 ... 0x106B:
2012 case 0x1091 ... 0x1095:
2025 * Some firmware hands off the e100 with interrupts enabled,
2026 * which can cause a flood of interrupts if packets are
2027 * received before the driver attaches to the device. So
2028 * disable all e100 interrupts here. The driver will
2029 * re-enable them when it's ready.
2031 pci_read_config_word(dev, PCI_COMMAND, &command);
2033 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2037 * Check that the device is in the D0 power state. If it's not,
2038 * there is no point to look any further.
2041 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2042 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2046 /* Convert from PCI bus to resource space. */
2047 csr = ioremap(pci_resource_start(dev, 0), 8);
2049 dev_warn(&dev->dev, "Can't map e100 registers\n");
2053 cmd_hi = readb(csr + 3);
2055 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; disabling\n");
2061 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2062 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2065 * The 82575 and 82598 may experience data corruption issues when transitioning
2066 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2068 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2070 dev_info(&dev->dev, "Disabling L0s\n");
2071 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2073 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2074 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2075 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2076 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2077 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2078 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2079 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2080 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2082 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2084 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2086 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2088 static void fixup_rev1_53c810(struct pci_dev *dev)
2090 u32 class = dev->class;
2093 * rev 1 ncr53c810 chips don't set the class at all which means
2094 * they don't get their resources remapped. Fix that here.
2099 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2100 dev_info(&dev->dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2103 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2105 /* Enable 1k I/O space granularity on the Intel P64H2 */
2106 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2110 pci_read_config_word(dev, 0x40, &en1k);
2113 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
2114 dev->io_window_1k = 1;
2117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2119 /* Under some circumstances, AER is not linked with extended capabilities.
2120 * Force it to be linked by setting the corresponding control bit in the
2123 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2126 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2128 pci_write_config_byte(dev, 0xf41, b | 0x20);
2129 dev_info(&dev->dev, "Linking AER extended capability\n");
2133 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2134 quirk_nvidia_ck804_pcie_aer_ext_cap);
2135 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2136 quirk_nvidia_ck804_pcie_aer_ext_cap);
2138 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2141 * Disable PCI Bus Parking and PCI Master read caching on CX700
2142 * which causes unspecified timing errors with a VT6212L on the PCI
2143 * bus leading to USB2.0 packet loss.
2145 * This quirk is only enabled if a second (on the external PCI bus)
2146 * VT6212L is found -- the CX700 core itself also contains a USB
2147 * host controller with the same PCI ID as the VT6212L.
2150 /* Count VT6212L instances */
2151 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2152 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2155 /* p should contain the first (internal) VT6212L -- see if we have
2156 an external one by searching again */
2157 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2162 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2164 /* Turn off PCI Bus Parking */
2165 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2167 dev_info(&dev->dev, "Disabling VIA CX700 PCI parking\n");
2171 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2173 /* Turn off PCI Master read caching */
2174 pci_write_config_byte(dev, 0x72, 0x0);
2176 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2177 pci_write_config_byte(dev, 0x75, 0x1);
2179 /* Disable "Read FIFO Timer" */
2180 pci_write_config_byte(dev, 0x77, 0x0);
2182 dev_info(&dev->dev, "Disabling VIA CX700 PCI caching\n");
2186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2189 * If a device follows the VPD format spec, the PCI core will not read or
2190 * write past the VPD End Tag. But some vendors do not follow the VPD
2191 * format spec, so we can't tell how much data is safe to access. Devices
2192 * may behave unpredictably if we access too much. Blacklist these devices
2193 * so we don't touch VPD at all.
2195 static void quirk_blacklist_vpd(struct pci_dev *dev)
2199 dev_warn(&dev->dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n");
2203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0060, quirk_blacklist_vpd);
2204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x007c, quirk_blacklist_vpd);
2205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0413, quirk_blacklist_vpd);
2206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0078, quirk_blacklist_vpd);
2207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0079, quirk_blacklist_vpd);
2208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0073, quirk_blacklist_vpd);
2209 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0071, quirk_blacklist_vpd);
2210 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005b, quirk_blacklist_vpd);
2211 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x002f, quirk_blacklist_vpd);
2212 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005d, quirk_blacklist_vpd);
2213 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
2214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID,
2215 quirk_blacklist_vpd);
2216 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
2219 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2220 * VPD end tag will hang the device. This problem was initially
2221 * observed when a vpd entry was created in sysfs
2222 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2223 * will dump 32k of data. Reading a full 32k will cause an access
2224 * beyond the VPD end tag causing the device to hang. Once the device
2225 * is hung, the bnx2 driver will not be able to reset the device.
2226 * We believe that it is legal to read beyond the end tag and
2227 * therefore the solution is to limit the read/write length.
2229 static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
2232 * Only disable the VPD capability for 5706, 5706S, 5708,
2233 * 5708S and 5709 rev. A
2235 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
2236 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
2237 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
2238 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
2239 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2240 (dev->revision & 0xf0) == 0x0)) {
2242 dev->vpd->len = 0x80;
2246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2247 PCI_DEVICE_ID_NX2_5706,
2248 quirk_brcm_570x_limit_vpd);
2249 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2250 PCI_DEVICE_ID_NX2_5706S,
2251 quirk_brcm_570x_limit_vpd);
2252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2253 PCI_DEVICE_ID_NX2_5708,
2254 quirk_brcm_570x_limit_vpd);
2255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2256 PCI_DEVICE_ID_NX2_5708S,
2257 quirk_brcm_570x_limit_vpd);
2258 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2259 PCI_DEVICE_ID_NX2_5709,
2260 quirk_brcm_570x_limit_vpd);
2261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2262 PCI_DEVICE_ID_NX2_5709S,
2263 quirk_brcm_570x_limit_vpd);
2265 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2269 pci_read_config_dword(dev, 0xf4, &rev);
2271 /* Only CAP the MRRS if the device is a 5719 A0 */
2272 if (rev == 0x05719000) {
2273 int readrq = pcie_get_readrq(dev);
2275 pcie_set_readrq(dev, 2048);
2279 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2280 PCI_DEVICE_ID_TIGON3_5719,
2281 quirk_brcm_5719_limit_mrrs);
2283 #ifdef CONFIG_PCIE_IPROC_PLATFORM
2284 static void quirk_paxc_bridge(struct pci_dev *pdev)
2286 /* The PCI config space is shared with the PAXC root port and the first
2287 * Ethernet device. So, we need to workaround this by telling the PCI
2288 * code that the bridge is not an Ethernet device.
2290 if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
2291 pdev->class = PCI_CLASS_BRIDGE_PCI << 8;
2293 /* MPSS is not being set properly (as it is currently 0). This is
2294 * because that area of the PCI config space is hard coded to zero, and
2295 * is not modifiable by firmware. Set this to 2 (e.g., 512 byte MPS)
2296 * so that the MPS can be set to the real max value.
2298 pdev->pcie_mpss = 2;
2300 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16cd, quirk_paxc_bridge);
2301 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16f0, quirk_paxc_bridge);
2304 /* Originally in EDAC sources for i82875P:
2305 * Intel tells BIOS developers to hide device 6 which
2306 * configures the overflow device access containing
2307 * the DRBs - this is where we expose device 6.
2308 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2310 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2314 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2315 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2316 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2320 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2321 quirk_unhide_mch_dev6);
2322 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2323 quirk_unhide_mch_dev6);
2325 #ifdef CONFIG_TILEPRO
2327 * The Tilera TILEmpower tilepro platform needs to set the link speed
2328 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
2329 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
2330 * capability register of the PEX8624 PCIe switch. The switch
2331 * supports link speed auto negotiation, but falsely sets
2332 * the link speed to 5GT/s.
2334 static void quirk_tile_plx_gen1(struct pci_dev *dev)
2336 if (tile_plx_gen1) {
2337 pci_write_config_dword(dev, 0x98, 0x1);
2341 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
2342 #endif /* CONFIG_TILEPRO */
2344 #ifdef CONFIG_PCI_MSI
2345 /* Some chipsets do not support MSI. We cannot easily rely on setting
2346 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2347 * some other buses controlled by the chipset even if Linux is not
2348 * aware of it. Instead of setting the flag on all buses in the
2349 * machine, simply disable MSI globally.
2351 static void quirk_disable_all_msi(struct pci_dev *dev)
2354 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2356 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2357 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2358 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2359 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2361 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2362 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2363 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2365 /* Disable MSI on chipsets that are known to not support it */
2366 static void quirk_disable_msi(struct pci_dev *dev)
2368 if (dev->subordinate) {
2369 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2370 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2373 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2374 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2375 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2378 * The APC bridge device in AMD 780 family northbridges has some random
2379 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2380 * we use the possible vendor/device IDs of the host bridge for the
2381 * declared quirk, and search for the APC bridge by slot number.
2383 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2385 struct pci_dev *apc_bridge;
2387 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2389 if (apc_bridge->device == 0x9602)
2390 quirk_disable_msi(apc_bridge);
2391 pci_dev_put(apc_bridge);
2394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2395 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2397 /* Go through the list of Hypertransport capabilities and
2398 * return 1 if a HT MSI capability is found and enabled */
2399 static int msi_ht_cap_enabled(struct pci_dev *dev)
2401 int pos, ttl = PCI_FIND_CAP_TTL;
2403 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2404 while (pos && ttl--) {
2407 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2409 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2410 flags & HT_MSI_FLAGS_ENABLE ?
2411 "enabled" : "disabled");
2412 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2415 pos = pci_find_next_ht_capability(dev, pos,
2416 HT_CAPTYPE_MSI_MAPPING);
2421 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2422 static void quirk_msi_ht_cap(struct pci_dev *dev)
2424 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2425 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2426 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2432 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2433 * MSI are supported if the MSI capability set in any of these mappings.
2435 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2437 struct pci_dev *pdev;
2439 if (!dev->subordinate)
2442 /* check HT MSI cap on this chipset and the root one.
2443 * a single one having MSI is enough to be sure that MSI are supported.
2445 pdev = pci_get_slot(dev->bus, 0);
2448 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2449 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2450 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2454 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2455 quirk_nvidia_ck804_msi_ht_cap);
2457 /* Force enable MSI mapping capability on HT bridges */
2458 static void ht_enable_msi_mapping(struct pci_dev *dev)
2460 int pos, ttl = PCI_FIND_CAP_TTL;
2462 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2463 while (pos && ttl--) {
2466 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2468 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2470 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2471 flags | HT_MSI_FLAGS_ENABLE);
2473 pos = pci_find_next_ht_capability(dev, pos,
2474 HT_CAPTYPE_MSI_MAPPING);
2477 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2478 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2479 ht_enable_msi_mapping);
2481 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2482 ht_enable_msi_mapping);
2484 /* The P5N32-SLI motherboards from Asus have a problem with msi
2485 * for the MCP55 NIC. It is not yet determined whether the msi problem
2486 * also affects other devices. As for now, turn off msi for this device.
2488 static void nvenet_msi_disable(struct pci_dev *dev)
2490 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2493 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2494 strstr(board_name, "P5N32-E SLI"))) {
2495 dev_info(&dev->dev, "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2499 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2500 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2501 nvenet_msi_disable);
2504 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2505 * config register. This register controls the routing of legacy
2506 * interrupts from devices that route through the MCP55. If this register
2507 * is misprogrammed, interrupts are only sent to the BSP, unlike
2508 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2509 * having this register set properly prevents kdump from booting up
2510 * properly, so let's make sure that we have it set correctly.
2511 * Note that this is an undocumented register.
2513 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2517 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2520 pci_read_config_dword(dev, 0x74, &cfg);
2522 if (cfg & ((1 << 2) | (1 << 15))) {
2523 printk(KERN_INFO "Rewriting irq routing register on MCP55\n");
2524 cfg &= ~((1 << 2) | (1 << 15));
2525 pci_write_config_dword(dev, 0x74, cfg);
2529 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2530 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2531 nvbridge_check_legacy_irq_routing);
2533 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2534 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2535 nvbridge_check_legacy_irq_routing);
2537 static int ht_check_msi_mapping(struct pci_dev *dev)
2539 int pos, ttl = PCI_FIND_CAP_TTL;
2542 /* check if there is HT MSI cap or enabled on this device */
2543 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2544 while (pos && ttl--) {
2549 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2551 if (flags & HT_MSI_FLAGS_ENABLE) {
2558 pos = pci_find_next_ht_capability(dev, pos,
2559 HT_CAPTYPE_MSI_MAPPING);
2565 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2567 struct pci_dev *dev;
2572 dev_no = host_bridge->devfn >> 3;
2573 for (i = dev_no + 1; i < 0x20; i++) {
2574 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2578 /* found next host bridge ?*/
2579 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2585 if (ht_check_msi_mapping(dev)) {
2596 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2597 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2599 static int is_end_of_ht_chain(struct pci_dev *dev)
2605 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2610 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2612 ctrl_off = ((flags >> 10) & 1) ?
2613 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2614 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2616 if (ctrl & (1 << 6))
2623 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2625 struct pci_dev *host_bridge;
2630 dev_no = dev->devfn >> 3;
2631 for (i = dev_no; i >= 0; i--) {
2632 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2636 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2641 pci_dev_put(host_bridge);
2647 /* don't enable end_device/host_bridge with leaf directly here */
2648 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2649 host_bridge_with_leaf(host_bridge))
2652 /* root did that ! */
2653 if (msi_ht_cap_enabled(host_bridge))
2656 ht_enable_msi_mapping(dev);
2659 pci_dev_put(host_bridge);
2662 static void ht_disable_msi_mapping(struct pci_dev *dev)
2664 int pos, ttl = PCI_FIND_CAP_TTL;
2666 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2667 while (pos && ttl--) {
2670 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2672 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2674 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2675 flags & ~HT_MSI_FLAGS_ENABLE);
2677 pos = pci_find_next_ht_capability(dev, pos,
2678 HT_CAPTYPE_MSI_MAPPING);
2682 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2684 struct pci_dev *host_bridge;
2688 if (!pci_msi_enabled())
2691 /* check if there is HT MSI cap or enabled on this device */
2692 found = ht_check_msi_mapping(dev);
2699 * HT MSI mapping should be disabled on devices that are below
2700 * a non-Hypertransport host bridge. Locate the host bridge...
2702 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2703 if (host_bridge == NULL) {
2704 dev_warn(&dev->dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2708 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2710 /* Host bridge is to HT */
2712 /* it is not enabled, try to enable it */
2714 ht_enable_msi_mapping(dev);
2716 nv_ht_enable_msi_mapping(dev);
2721 /* HT MSI is not enabled */
2725 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2726 ht_disable_msi_mapping(dev);
2729 pci_dev_put(host_bridge);
2732 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2734 return __nv_msi_ht_cap_quirk(dev, 1);
2737 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2739 return __nv_msi_ht_cap_quirk(dev, 0);
2742 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2743 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2745 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2746 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2748 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2750 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2752 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2756 /* SB700 MSI issue will be fixed at HW level from revision A21,
2757 * we need check PCI REVISION ID of SMBus controller to get SB700
2760 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2765 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2766 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2769 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2771 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2772 if (dev->revision < 0x18) {
2773 dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n");
2774 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2777 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2778 PCI_DEVICE_ID_TIGON3_5780,
2779 quirk_msi_intx_disable_bug);
2780 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2781 PCI_DEVICE_ID_TIGON3_5780S,
2782 quirk_msi_intx_disable_bug);
2783 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2784 PCI_DEVICE_ID_TIGON3_5714,
2785 quirk_msi_intx_disable_bug);
2786 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2787 PCI_DEVICE_ID_TIGON3_5714S,
2788 quirk_msi_intx_disable_bug);
2789 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2790 PCI_DEVICE_ID_TIGON3_5715,
2791 quirk_msi_intx_disable_bug);
2792 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2793 PCI_DEVICE_ID_TIGON3_5715S,
2794 quirk_msi_intx_disable_bug);
2796 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2797 quirk_msi_intx_disable_ati_bug);
2798 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2799 quirk_msi_intx_disable_ati_bug);
2800 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2801 quirk_msi_intx_disable_ati_bug);
2802 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2803 quirk_msi_intx_disable_ati_bug);
2804 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2805 quirk_msi_intx_disable_ati_bug);
2807 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2808 quirk_msi_intx_disable_bug);
2809 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2810 quirk_msi_intx_disable_bug);
2811 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2812 quirk_msi_intx_disable_bug);
2814 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2815 quirk_msi_intx_disable_bug);
2816 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2817 quirk_msi_intx_disable_bug);
2818 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2819 quirk_msi_intx_disable_bug);
2820 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2821 quirk_msi_intx_disable_bug);
2822 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2823 quirk_msi_intx_disable_bug);
2824 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
2825 quirk_msi_intx_disable_bug);
2826 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
2827 quirk_msi_intx_disable_qca_bug);
2828 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
2829 quirk_msi_intx_disable_qca_bug);
2830 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
2831 quirk_msi_intx_disable_qca_bug);
2832 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
2833 quirk_msi_intx_disable_qca_bug);
2834 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
2835 quirk_msi_intx_disable_qca_bug);
2836 #endif /* CONFIG_PCI_MSI */
2838 /* Allow manual resource allocation for PCI hotplug bridges
2839 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2840 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2841 * kernel fails to allocate resources when hotplug device is
2842 * inserted and PCI bus is rescanned.
2844 static void quirk_hotplug_bridge(struct pci_dev *dev)
2846 dev->is_hotplug_bridge = 1;
2849 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
2852 * This is a quirk for the Ricoh MMC controller found as a part of
2853 * some mulifunction chips.
2855 * This is very similar and based on the ricoh_mmc driver written by
2856 * Philip Langdale. Thank you for these magic sequences.
2858 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2859 * and one or both of cardbus or firewire.
2861 * It happens that they implement SD and MMC
2862 * support as separate controllers (and PCI functions). The linux SDHCI
2863 * driver supports MMC cards but the chip detects MMC cards in hardware
2864 * and directs them to the MMC controller - so the SDHCI driver never sees
2867 * To get around this, we must disable the useless MMC controller.
2868 * At that point, the SDHCI controller will start seeing them
2869 * It seems to be the case that the relevant PCI registers to deactivate the
2870 * MMC controller live on PCI function 0, which might be the cardbus controller
2871 * or the firewire controller, depending on the particular chip in question
2873 * This has to be done early, because as soon as we disable the MMC controller
2874 * other pci functions shift up one level, e.g. function #2 becomes function
2875 * #1, and this will confuse the pci core.
2878 #ifdef CONFIG_MMC_RICOH_MMC
2879 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
2881 /* disable via cardbus interface */
2886 /* disable must be done via function #0 */
2887 if (PCI_FUNC(dev->devfn))
2890 pci_read_config_byte(dev, 0xB7, &disable);
2894 pci_read_config_byte(dev, 0x8E, &write_enable);
2895 pci_write_config_byte(dev, 0x8E, 0xAA);
2896 pci_read_config_byte(dev, 0x8D, &write_target);
2897 pci_write_config_byte(dev, 0x8D, 0xB7);
2898 pci_write_config_byte(dev, 0xB7, disable | 0x02);
2899 pci_write_config_byte(dev, 0x8E, write_enable);
2900 pci_write_config_byte(dev, 0x8D, write_target);
2902 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2903 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2905 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2906 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2908 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
2910 /* disable via firewire interface */
2914 /* disable must be done via function #0 */
2915 if (PCI_FUNC(dev->devfn))
2918 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
2919 * certain types of SD/MMC cards. Lowering the SD base
2920 * clock frequency from 200Mhz to 50Mhz fixes this issue.
2922 * 0x150 - SD2.0 mode enable for changing base clock
2923 * frequency to 50Mhz
2924 * 0xe1 - Base clock frequency
2925 * 0x32 - 50Mhz new clock frequency
2926 * 0xf9 - Key register for 0x150
2927 * 0xfc - key register for 0xe1
2929 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
2930 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
2931 pci_write_config_byte(dev, 0xf9, 0xfc);
2932 pci_write_config_byte(dev, 0x150, 0x10);
2933 pci_write_config_byte(dev, 0xf9, 0x00);
2934 pci_write_config_byte(dev, 0xfc, 0x01);
2935 pci_write_config_byte(dev, 0xe1, 0x32);
2936 pci_write_config_byte(dev, 0xfc, 0x00);
2938 dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n");
2941 pci_read_config_byte(dev, 0xCB, &disable);
2946 pci_read_config_byte(dev, 0xCA, &write_enable);
2947 pci_write_config_byte(dev, 0xCA, 0x57);
2948 pci_write_config_byte(dev, 0xCB, disable | 0x02);
2949 pci_write_config_byte(dev, 0xCA, write_enable);
2951 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2952 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2955 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2956 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2957 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2958 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2959 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2960 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2961 #endif /*CONFIG_MMC_RICOH_MMC*/
2963 #ifdef CONFIG_DMAR_TABLE
2964 #define VTUNCERRMSK_REG 0x1ac
2965 #define VTD_MSK_SPEC_ERRORS (1 << 31)
2967 * This is a quirk for masking vt-d spec defined errors to platform error
2968 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
2969 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
2970 * on the RAS config settings of the platform) when a vt-d fault happens.
2971 * The resulting SMI caused the system to hang.
2973 * VT-d spec related errors are already handled by the VT-d OS code, so no
2974 * need to report the same error through other channels.
2976 static void vtd_mask_spec_errors(struct pci_dev *dev)
2980 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
2981 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
2983 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
2984 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
2987 static void fixup_ti816x_class(struct pci_dev *dev)
2989 u32 class = dev->class;
2991 /* TI 816x devices do not have class code set when in PCIe boot mode */
2992 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
2993 dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n",
2996 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
2997 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
2999 /* Some PCIe devices do not work reliably with the claimed maximum
3000 * payload size supported.
3002 static void fixup_mpss_256(struct pci_dev *dev)
3004 dev->pcie_mpss = 1; /* 256 bytes */
3006 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3007 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3008 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3009 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3010 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3011 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3013 /* Intel 5000 and 5100 Memory controllers have an errata with read completion
3014 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3015 * Since there is no way of knowing what the PCIE MPS on each fabric will be
3016 * until all of the devices are discovered and buses walked, read completion
3017 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3018 * it is possible to hotplug a device with MPS of 256B.
3020 static void quirk_intel_mc_errata(struct pci_dev *dev)
3025 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3026 pcie_bus_config == PCIE_BUS_DEFAULT)
3029 /* Intel errata specifies bits to change but does not say what they are.
3030 * Keeping them magical until such time as the registers and values can
3033 err = pci_read_config_word(dev, 0x48, &rcc);
3035 dev_err(&dev->dev, "Error attempting to read the read completion coalescing register\n");
3039 if (!(rcc & (1 << 10)))
3044 err = pci_write_config_word(dev, 0x48, rcc);
3046 dev_err(&dev->dev, "Error attempting to write the read completion coalescing register\n");
3050 pr_info_once("Read completion coalescing disabled due to hardware errata relating to 256B MPS\n");
3052 /* Intel 5000 series memory controllers and ports 2-7 */
3053 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3054 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3055 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3056 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3057 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3058 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3059 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3060 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3061 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3062 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3063 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3064 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3065 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3066 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3067 /* Intel 5100 series memory controllers and ports 2-7 */
3068 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3069 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3070 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3071 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3072 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3073 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3075 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3076 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3077 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3078 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3082 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To
3083 * work around this, query the size it should be configured to by the device and
3084 * modify the resource end to correspond to this new size.
3086 static void quirk_intel_ntb(struct pci_dev *dev)
3091 rc = pci_read_config_byte(dev, 0x00D0, &val);
3095 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3097 rc = pci_read_config_byte(dev, 0x00D1, &val);
3101 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3103 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3104 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3106 static ktime_t fixup_debug_start(struct pci_dev *dev,
3107 void (*fn)(struct pci_dev *dev))
3109 ktime_t calltime = 0;
3111 dev_dbg(&dev->dev, "calling %pF\n", fn);
3112 if (initcall_debug) {
3113 pr_debug("calling %pF @ %i for %s\n",
3114 fn, task_pid_nr(current), dev_name(&dev->dev));
3115 calltime = ktime_get();
3121 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
3122 void (*fn)(struct pci_dev *dev))
3124 ktime_t delta, rettime;
3125 unsigned long long duration;
3127 if (initcall_debug) {
3128 rettime = ktime_get();
3129 delta = ktime_sub(rettime, calltime);
3130 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
3131 pr_debug("pci fixup %pF returned after %lld usecs for %s\n",
3132 fn, duration, dev_name(&dev->dev));
3137 * Some BIOS implementations leave the Intel GPU interrupts enabled,
3138 * even though no one is handling them (f.e. i915 driver is never loaded).
3139 * Additionally the interrupt destination is not set up properly
3140 * and the interrupt ends up -somewhere-.
3142 * These spurious interrupts are "sticky" and the kernel disables
3143 * the (shared) interrupt line after 100.000+ generated interrupts.
3145 * Fix it by disabling the still enabled interrupts.
3146 * This resolves crashes often seen on monitor unplug.
3148 #define I915_DEIER_REG 0x4400c
3149 static void disable_igfx_irq(struct pci_dev *dev)
3151 void __iomem *regs = pci_iomap(dev, 0, 0);
3153 dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n");
3157 /* Check if any interrupt line is still enabled */
3158 if (readl(regs + I915_DEIER_REG) != 0) {
3159 dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3161 writel(0, regs + I915_DEIER_REG);
3164 pci_iounmap(dev, regs);
3166 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3167 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3168 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3171 * PCI devices which are on Intel chips can skip the 10ms delay
3172 * before entering D3 mode.
3174 static void quirk_remove_d3_delay(struct pci_dev *dev)
3178 /* C600 Series devices do not need 10ms d3_delay */
3179 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
3180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
3181 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
3182 /* Lynxpoint-H PCH devices do not need 10ms d3_delay */
3183 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
3184 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
3185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
3186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
3187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
3188 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
3189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
3190 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
3191 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
3192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
3193 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
3194 /* Intel Cherrytrail devices do not need 10ms d3_delay */
3195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3_delay);
3196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
3197 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
3198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3_delay);
3199 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
3200 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
3201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3_delay);
3202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3_delay);
3203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3_delay);
3206 * Some devices may pass our check in pci_intx_mask_supported() if
3207 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3208 * support this feature.
3210 static void quirk_broken_intx_masking(struct pci_dev *dev)
3212 dev->broken_intx_masking = 1;
3214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3215 quirk_broken_intx_masking);
3216 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3217 quirk_broken_intx_masking);
3220 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3221 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3223 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3225 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3226 quirk_broken_intx_masking);
3229 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3230 * DisINTx can be set but the interrupt status bit is non-functional.
3232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572,
3233 quirk_broken_intx_masking);
3234 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574,
3235 quirk_broken_intx_masking);
3236 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580,
3237 quirk_broken_intx_masking);
3238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581,
3239 quirk_broken_intx_masking);
3240 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583,
3241 quirk_broken_intx_masking);
3242 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584,
3243 quirk_broken_intx_masking);
3244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585,
3245 quirk_broken_intx_masking);
3246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586,
3247 quirk_broken_intx_masking);
3248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587,
3249 quirk_broken_intx_masking);
3250 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588,
3251 quirk_broken_intx_masking);
3252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589,
3253 quirk_broken_intx_masking);
3254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a,
3255 quirk_broken_intx_masking);
3256 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b,
3257 quirk_broken_intx_masking);
3258 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0,
3259 quirk_broken_intx_masking);
3260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1,
3261 quirk_broken_intx_masking);
3262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2,
3263 quirk_broken_intx_masking);
3265 static u16 mellanox_broken_intx_devs[] = {
3266 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3267 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3268 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3269 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3270 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3271 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3272 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3273 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3274 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3275 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3276 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3277 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3278 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3279 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3282 #define CONNECTX_4_CURR_MAX_MINOR 99
3283 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3286 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3287 * If so, don't mark it as broken.
3288 * FW minor > 99 means older FW version format and no INTx masking support.
3289 * FW minor < 14 means new FW version format and no INTx masking support.
3291 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3293 __be32 __iomem *fw_ver;
3301 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3302 if (pdev->device == mellanox_broken_intx_devs[i]) {
3303 pdev->broken_intx_masking = 1;
3308 /* Getting here means Connect-IB cards and up. Connect-IB has no INTx
3309 * support so shouldn't be checked further
3311 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3314 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3315 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3318 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3319 if (pci_enable_device_mem(pdev)) {
3320 dev_warn(&pdev->dev, "Can't enable device memory\n");
3324 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3326 dev_warn(&pdev->dev, "Can't map ConnectX-4 initialization segment\n");
3330 /* Reading from resource space should be 32b aligned */
3331 fw_maj_min = ioread32be(fw_ver);
3332 fw_sub_min = ioread32be(fw_ver + 1);
3333 fw_major = fw_maj_min & 0xffff;
3334 fw_minor = fw_maj_min >> 16;
3335 fw_subminor = fw_sub_min & 0xffff;
3336 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3337 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3338 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",
3339 fw_major, fw_minor, fw_subminor, pdev->device ==
3340 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3341 pdev->broken_intx_masking = 1;
3347 pci_disable_device(pdev);
3349 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3350 mellanox_check_broken_intx_masking);
3352 static void quirk_no_bus_reset(struct pci_dev *dev)
3354 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3358 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3359 * The device will throw a Link Down error on AER-capable systems and
3360 * regardless of AER, config space of the device is never accessible again
3361 * and typically causes the system to hang or reset when access is attempted.
3362 * http://www.spinics.net/lists/linux-pci/msg34797.html
3364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3369 static void quirk_no_pm_reset(struct pci_dev *dev)
3372 * We can't do a bus reset on root bus devices, but an ineffective
3373 * PM reset may be better than nothing.
3375 if (!pci_is_root_bus(dev->bus))
3376 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3380 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3381 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3382 * to have no effect on the device: it retains the framebuffer contents and
3383 * monitor sync. Advertising this support makes other layers, like VFIO,
3384 * assume pci_reset_function() is viable for this device. Mark it as
3385 * unavailable to skip it when testing reset methods.
3387 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3388 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3391 * Thunderbolt controllers with broken MSI hotplug signaling:
3392 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3393 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3395 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3397 if (pdev->is_hotplug_bridge &&
3398 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3399 pdev->revision <= 1))
3402 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3403 quirk_thunderbolt_hotplug_msi);
3404 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3405 quirk_thunderbolt_hotplug_msi);
3406 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3407 quirk_thunderbolt_hotplug_msi);
3408 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3409 quirk_thunderbolt_hotplug_msi);
3410 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3411 quirk_thunderbolt_hotplug_msi);
3413 static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
3415 int chip = (dev->device & 0xf000) >> 12;
3416 int func = (dev->device & 0x0f00) >> 8;
3417 int prod = (dev->device & 0x00ff) >> 0;
3420 * If this is a T3-based adapter, there's a 1KB VPD area at offset
3421 * 0xc00 which contains the preferred VPD values. If this is a T4 or
3422 * later based adapter, the special VPD is at offset 0x400 for the
3423 * Physical Functions (the SR-IOV Virtual Functions have no VPD
3424 * Capabilities). The PCI VPD Access core routines will normally
3425 * compute the size of the VPD by parsing the VPD Data Structure at
3426 * offset 0x000. This will result in silent failures when attempting
3427 * to accesses these other VPD areas which are beyond those computed
3430 if (chip == 0x0 && prod >= 0x20)
3431 pci_set_vpd_size(dev, 8192);
3432 else if (chip >= 0x4 && func < 0x8)
3433 pci_set_vpd_size(dev, 2048);
3436 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3437 quirk_chelsio_extend_vpd);
3441 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3443 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3444 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3445 * be present after resume if a device was plugged in before suspend.
3447 * The thunderbolt controller consists of a pcie switch with downstream
3448 * bridges leading to the NHI and to the tunnel pci bridges.
3450 * This quirk cuts power to the whole chip. Therefore we have to apply it
3451 * during suspend_noirq of the upstream bridge.
3453 * Power is automagically restored before resume. No action is needed.
3455 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3457 acpi_handle bridge, SXIO, SXFP, SXLV;
3459 if (!x86_apple_machine)
3461 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3463 bridge = ACPI_HANDLE(&dev->dev);
3467 * SXIO and SXLV are present only on machines requiring this quirk.
3468 * TB bridges in external devices might have the same device id as those
3469 * on the host, but they will not have the associated ACPI methods. This
3470 * implicitly checks that we are at the right bridge.
3472 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3473 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3474 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3476 dev_info(&dev->dev, "quirk: cutting power to thunderbolt controller...\n");
3478 /* magic sequence */
3479 acpi_execute_simple_method(SXIO, NULL, 1);
3480 acpi_execute_simple_method(SXFP, NULL, 0);
3482 acpi_execute_simple_method(SXLV, NULL, 0);
3483 acpi_execute_simple_method(SXIO, NULL, 0);
3484 acpi_execute_simple_method(SXLV, NULL, 0);
3486 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3487 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3488 quirk_apple_poweroff_thunderbolt);
3491 * Apple: Wait for the thunderbolt controller to reestablish pci tunnels.
3493 * During suspend the thunderbolt controller is reset and all pci
3494 * tunnels are lost. The NHI driver will try to reestablish all tunnels
3495 * during resume. We have to manually wait for the NHI since there is
3496 * no parent child relationship between the NHI and the tunneled
3499 static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev)
3501 struct pci_dev *sibling = NULL;
3502 struct pci_dev *nhi = NULL;
3504 if (!x86_apple_machine)
3506 if (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)
3509 * Find the NHI and confirm that we are a bridge on the tb host
3510 * controller and not on a tb endpoint.
3512 sibling = pci_get_slot(dev->bus, 0x0);
3514 goto out; /* we are the downstream bridge to the NHI */
3515 if (!sibling || !sibling->subordinate)
3517 nhi = pci_get_slot(sibling->subordinate, 0x0);
3520 if (nhi->vendor != PCI_VENDOR_ID_INTEL
3521 || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE &&
3522 nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C &&
3523 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI &&
3524 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI)
3525 || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8)
3527 dev_info(&dev->dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n");
3528 device_pm_wait_for_dev(&dev->dev, &nhi->dev);
3531 pci_dev_put(sibling);
3533 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3534 PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3535 quirk_apple_wait_for_thunderbolt);
3536 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3537 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3538 quirk_apple_wait_for_thunderbolt);
3539 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3540 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE,
3541 quirk_apple_wait_for_thunderbolt);
3542 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3543 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE,
3544 quirk_apple_wait_for_thunderbolt);
3547 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
3548 struct pci_fixup *end)
3552 for (; f < end; f++)
3553 if ((f->class == (u32) (dev->class >> f->class_shift) ||
3554 f->class == (u32) PCI_ANY_ID) &&
3555 (f->vendor == dev->vendor ||
3556 f->vendor == (u16) PCI_ANY_ID) &&
3557 (f->device == dev->device ||
3558 f->device == (u16) PCI_ANY_ID)) {
3559 calltime = fixup_debug_start(dev, f->hook);
3561 fixup_debug_report(dev, calltime, f->hook);
3565 extern struct pci_fixup __start_pci_fixups_early[];
3566 extern struct pci_fixup __end_pci_fixups_early[];
3567 extern struct pci_fixup __start_pci_fixups_header[];
3568 extern struct pci_fixup __end_pci_fixups_header[];
3569 extern struct pci_fixup __start_pci_fixups_final[];
3570 extern struct pci_fixup __end_pci_fixups_final[];
3571 extern struct pci_fixup __start_pci_fixups_enable[];
3572 extern struct pci_fixup __end_pci_fixups_enable[];
3573 extern struct pci_fixup __start_pci_fixups_resume[];
3574 extern struct pci_fixup __end_pci_fixups_resume[];
3575 extern struct pci_fixup __start_pci_fixups_resume_early[];
3576 extern struct pci_fixup __end_pci_fixups_resume_early[];
3577 extern struct pci_fixup __start_pci_fixups_suspend[];
3578 extern struct pci_fixup __end_pci_fixups_suspend[];
3579 extern struct pci_fixup __start_pci_fixups_suspend_late[];
3580 extern struct pci_fixup __end_pci_fixups_suspend_late[];
3582 static bool pci_apply_fixup_final_quirks;
3584 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
3586 struct pci_fixup *start, *end;
3589 case pci_fixup_early:
3590 start = __start_pci_fixups_early;
3591 end = __end_pci_fixups_early;
3594 case pci_fixup_header:
3595 start = __start_pci_fixups_header;
3596 end = __end_pci_fixups_header;
3599 case pci_fixup_final:
3600 if (!pci_apply_fixup_final_quirks)
3602 start = __start_pci_fixups_final;
3603 end = __end_pci_fixups_final;
3606 case pci_fixup_enable:
3607 start = __start_pci_fixups_enable;
3608 end = __end_pci_fixups_enable;
3611 case pci_fixup_resume:
3612 start = __start_pci_fixups_resume;
3613 end = __end_pci_fixups_resume;
3616 case pci_fixup_resume_early:
3617 start = __start_pci_fixups_resume_early;
3618 end = __end_pci_fixups_resume_early;
3621 case pci_fixup_suspend:
3622 start = __start_pci_fixups_suspend;
3623 end = __end_pci_fixups_suspend;
3626 case pci_fixup_suspend_late:
3627 start = __start_pci_fixups_suspend_late;
3628 end = __end_pci_fixups_suspend_late;
3632 /* stupid compiler warning, you would think with an enum... */
3635 pci_do_fixups(dev, start, end);
3637 EXPORT_SYMBOL(pci_fixup_device);
3640 static int __init pci_apply_final_quirks(void)
3642 struct pci_dev *dev = NULL;
3646 if (pci_cache_line_size)
3647 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
3648 pci_cache_line_size << 2);
3650 pci_apply_fixup_final_quirks = true;
3651 for_each_pci_dev(dev) {
3652 pci_fixup_device(pci_fixup_final, dev);
3654 * If arch hasn't set it explicitly yet, use the CLS
3655 * value shared by all PCI devices. If there's a
3656 * mismatch, fall back to the default value.
3658 if (!pci_cache_line_size) {
3659 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
3662 if (!tmp || cls == tmp)
3665 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), using %u bytes\n",
3667 pci_dfl_cache_line_size << 2);
3668 pci_cache_line_size = pci_dfl_cache_line_size;
3672 if (!pci_cache_line_size) {
3673 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
3674 cls << 2, pci_dfl_cache_line_size << 2);
3675 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
3681 fs_initcall_sync(pci_apply_final_quirks);
3684 * Following are device-specific reset methods which can be used to
3685 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3688 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3691 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3693 * The 82599 supports FLR on VFs, but FLR support is reported only
3694 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3695 * Thus we must call pcie_flr() directly without first checking if it is
3703 #define SOUTH_CHICKEN2 0xc2004
3704 #define PCH_PP_STATUS 0xc7200
3705 #define PCH_PP_CONTROL 0xc7204
3706 #define MSG_CTL 0x45010
3707 #define NSDE_PWR_STATE 0xd0100
3708 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3710 static int reset_ivb_igd(struct pci_dev *dev, int probe)
3712 void __iomem *mmio_base;
3713 unsigned long timeout;
3719 mmio_base = pci_iomap(dev, 0, 0);
3723 iowrite32(0x00000002, mmio_base + MSG_CTL);
3726 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3727 * driver loaded sets the right bits. However, this's a reset and
3728 * the bits have been set by i915 previously, so we clobber
3729 * SOUTH_CHICKEN2 register directly here.
3731 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3733 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3734 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3736 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3738 val = ioread32(mmio_base + PCH_PP_STATUS);
3739 if ((val & 0xb0000000) == 0)
3740 goto reset_complete;
3742 } while (time_before(jiffies, timeout));
3743 dev_warn(&dev->dev, "timeout during reset\n");
3746 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3748 pci_iounmap(dev, mmio_base);
3753 * Device-specific reset method for Chelsio T4-based adapters.
3755 static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3761 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3762 * that we have no device-specific reset method.
3764 if ((dev->device & 0xf000) != 0x4000)
3768 * If this is the "probe" phase, return 0 indicating that we can
3769 * reset this device.
3775 * T4 can wedge if there are DMAs in flight within the chip and Bus
3776 * Master has been disabled. We need to have it on till the Function
3777 * Level Reset completes. (BUS_MASTER is disabled in
3778 * pci_reset_function()).
3780 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3781 pci_write_config_word(dev, PCI_COMMAND,
3782 old_command | PCI_COMMAND_MASTER);
3785 * Perform the actual device function reset, saving and restoring
3786 * configuration information around the reset.
3788 pci_save_state(dev);
3791 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3792 * are disabled when an MSI-X interrupt message needs to be delivered.
3793 * So we briefly re-enable MSI-X interrupts for the duration of the
3794 * FLR. The pci_restore_state() below will restore the original
3797 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3798 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3799 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3801 PCI_MSIX_FLAGS_ENABLE |
3802 PCI_MSIX_FLAGS_MASKALL);
3807 * Restore the configuration information (BAR values, etc.) including
3808 * the original PCI Configuration Space Command word, and return
3811 pci_restore_state(dev);
3812 pci_write_config_word(dev, PCI_COMMAND, old_command);
3816 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3817 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3818 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3820 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
3821 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
3822 reset_intel_82599_sfp_virtfn },
3823 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
3825 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
3827 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3828 reset_chelsio_generic_dev },
3833 * These device-specific reset methods are here rather than in a driver
3834 * because when a host assigns a device to a guest VM, the host may need
3835 * to reset the device but probably doesn't have a driver for it.
3837 int pci_dev_specific_reset(struct pci_dev *dev, int probe)
3839 const struct pci_dev_reset_methods *i;
3841 for (i = pci_dev_reset_methods; i->reset; i++) {
3842 if ((i->vendor == dev->vendor ||
3843 i->vendor == (u16)PCI_ANY_ID) &&
3844 (i->device == dev->device ||
3845 i->device == (u16)PCI_ANY_ID))
3846 return i->reset(dev, probe);
3852 static void quirk_dma_func0_alias(struct pci_dev *dev)
3854 if (PCI_FUNC(dev->devfn) != 0)
3855 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
3859 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3861 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
3863 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
3864 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
3866 static void quirk_dma_func1_alias(struct pci_dev *dev)
3868 if (PCI_FUNC(dev->devfn) != 1)
3869 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1));
3873 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
3874 * SKUs function 1 is present and is a legacy IDE controller, in other
3875 * SKUs this function is not present, making this a ghost requester.
3876 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
3878 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
3879 quirk_dma_func1_alias);
3880 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
3881 quirk_dma_func1_alias);
3882 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
3883 quirk_dma_func1_alias);
3884 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
3885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
3886 quirk_dma_func1_alias);
3887 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
3888 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
3889 quirk_dma_func1_alias);
3890 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
3891 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
3892 quirk_dma_func1_alias);
3893 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
3894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
3895 quirk_dma_func1_alias);
3896 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
3897 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
3898 quirk_dma_func1_alias);
3899 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
3900 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
3901 quirk_dma_func1_alias);
3902 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
3903 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
3904 quirk_dma_func1_alias);
3905 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
3906 quirk_dma_func1_alias);
3907 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
3908 quirk_dma_func1_alias);
3909 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
3910 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
3911 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
3912 quirk_dma_func1_alias);
3913 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
3914 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
3915 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
3916 quirk_dma_func1_alias);
3919 * Some devices DMA with the wrong devfn, not just the wrong function.
3920 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
3921 * the alias is "fixed" and independent of the device devfn.
3923 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
3924 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
3925 * single device on the secondary bus. In reality, the single exposed
3926 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
3927 * that provides a bridge to the internal bus of the I/O processor. The
3928 * controller supports private devices, which can be hidden from PCI config
3929 * space. In the case of the Adaptec 3405, a private device at 01.0
3930 * appears to be the DMA engine, which therefore needs to become a DMA
3931 * alias for the device.
3933 static const struct pci_device_id fixed_dma_alias_tbl[] = {
3934 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
3935 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
3936 .driver_data = PCI_DEVFN(1, 0) },
3937 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
3938 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
3939 .driver_data = PCI_DEVFN(1, 0) },
3943 static void quirk_fixed_dma_alias(struct pci_dev *dev)
3945 const struct pci_device_id *id;
3947 id = pci_match_id(fixed_dma_alias_tbl, dev);
3949 pci_add_dma_alias(dev, id->driver_data);
3952 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
3955 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
3956 * using the wrong DMA alias for the device. Some of these devices can be
3957 * used as either forward or reverse bridges, so we need to test whether the
3958 * device is operating in the correct mode. We could probably apply this
3959 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
3960 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
3961 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
3963 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
3965 if (!pci_is_root_bus(pdev->bus) &&
3966 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
3967 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
3968 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
3969 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
3971 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
3972 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
3973 quirk_use_pcie_bridge_dma_alias);
3974 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
3975 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
3976 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
3977 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
3978 /* ITE 8893 has the same problem as the 8892 */
3979 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
3980 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
3981 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
3984 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
3985 * be added as aliases to the DMA device in order to allow buffer access
3986 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
3987 * programmed in the EEPROM.
3989 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
3991 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0));
3992 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0));
3993 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3));
3995 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
3996 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
3999 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4000 * associated not at the root bus, but at a bridge below. This quirk avoids
4001 * generating invalid DMA aliases.
4003 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4005 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4007 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4008 quirk_bridge_cavm_thrx2_pcie_root);
4009 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4010 quirk_bridge_cavm_thrx2_pcie_root);
4013 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4014 * class code. Fix it.
4016 static void quirk_tw686x_class(struct pci_dev *pdev)
4018 u32 class = pdev->class;
4020 /* Use "Multimedia controller" class */
4021 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4022 dev_info(&pdev->dev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4023 class, pdev->class);
4025 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4026 quirk_tw686x_class);
4027 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4028 quirk_tw686x_class);
4029 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4030 quirk_tw686x_class);
4031 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4032 quirk_tw686x_class);
4035 * Some devices have problems with Transaction Layer Packets with the Relaxed
4036 * Ordering Attribute set. Such devices should mark themselves and other
4037 * Device Drivers should check before sending TLPs with RO set.
4039 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4041 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4042 dev_info(&dev->dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4046 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4047 * Complex has a Flow Control Credit issue which can cause performance
4048 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4050 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4051 quirk_relaxedordering_disable);
4052 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4053 quirk_relaxedordering_disable);
4054 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4055 quirk_relaxedordering_disable);
4056 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4057 quirk_relaxedordering_disable);
4058 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4059 quirk_relaxedordering_disable);
4060 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4061 quirk_relaxedordering_disable);
4062 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4063 quirk_relaxedordering_disable);
4064 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4065 quirk_relaxedordering_disable);
4066 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4067 quirk_relaxedordering_disable);
4068 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4069 quirk_relaxedordering_disable);
4070 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4071 quirk_relaxedordering_disable);
4072 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4073 quirk_relaxedordering_disable);
4074 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4075 quirk_relaxedordering_disable);
4076 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4077 quirk_relaxedordering_disable);
4078 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4079 quirk_relaxedordering_disable);
4080 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4081 quirk_relaxedordering_disable);
4082 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4083 quirk_relaxedordering_disable);
4084 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4085 quirk_relaxedordering_disable);
4086 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4087 quirk_relaxedordering_disable);
4088 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4089 quirk_relaxedordering_disable);
4090 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4091 quirk_relaxedordering_disable);
4092 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4093 quirk_relaxedordering_disable);
4094 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4095 quirk_relaxedordering_disable);
4096 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4097 quirk_relaxedordering_disable);
4098 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4099 quirk_relaxedordering_disable);
4100 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4101 quirk_relaxedordering_disable);
4102 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4103 quirk_relaxedordering_disable);
4104 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4105 quirk_relaxedordering_disable);
4108 * The AMD ARM A1100 (AKA "SEATTLE") SoC has a bug in its PCIe Root Complex
4109 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4110 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4111 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4112 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4113 * November 10, 2010). As a result, on this platform we can't use Relaxed
4114 * Ordering for Upstream TLPs.
4116 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4117 quirk_relaxedordering_disable);
4118 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4119 quirk_relaxedordering_disable);
4120 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4121 quirk_relaxedordering_disable);
4124 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4125 * values for the Attribute as were supplied in the header of the
4126 * corresponding Request, except as explicitly allowed when IDO is used."
4128 * If a non-compliant device generates a completion with a different
4129 * attribute than the request, the receiver may accept it (which itself
4130 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4131 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4132 * device access timeout.
4134 * If the non-compliant device generates completions with zero attributes
4135 * (instead of copying the attributes from the request), we can work around
4136 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4137 * upstream devices so they always generate requests with zero attributes.
4139 * This affects other devices under the same Root Port, but since these
4140 * attributes are performance hints, there should be no functional problem.
4142 * Note that Configuration Space accesses are never supposed to have TLP
4143 * Attributes, so we're safe waiting till after any Configuration Space
4144 * accesses to do the Root Port fixup.
4146 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4148 struct pci_dev *root_port = pci_find_pcie_root_port(pdev);
4151 dev_warn(&pdev->dev, "PCIe Completion erratum may cause device errors\n");
4155 dev_info(&root_port->dev, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4156 dev_name(&pdev->dev));
4157 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4158 PCI_EXP_DEVCTL_RELAX_EN |
4159 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4163 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4164 * Completion it generates.
4166 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4169 * This mask/compare operation selects for Physical Function 4 on a
4170 * T5. We only need to fix up the Root Port once for any of the
4171 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4172 * 0x54xx so we use that one,
4174 if ((pdev->device & 0xff00) == 0x5400)
4175 quirk_disable_root_port_attributes(pdev);
4177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4178 quirk_chelsio_T5_disable_root_port_attributes);
4181 * AMD has indicated that the devices below do not support peer-to-peer
4182 * in any system where they are found in the southbridge with an AMD
4183 * IOMMU in the system. Multifunction devices that do not support
4184 * peer-to-peer between functions can claim to support a subset of ACS.
4185 * Such devices effectively enable request redirect (RR) and completion
4186 * redirect (CR) since all transactions are redirected to the upstream
4189 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
4190 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
4191 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
4193 * 1002:4385 SBx00 SMBus Controller
4194 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4195 * 1002:4383 SBx00 Azalia (Intel HDA)
4196 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4197 * 1002:4384 SBx00 PCI to PCI Bridge
4198 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4200 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4202 * 1022:780f [AMD] FCH PCI Bridge
4203 * 1022:7809 [AMD] FCH USB OHCI Controller
4205 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4208 struct acpi_table_header *header = NULL;
4211 /* Targeting multifunction devices on the SB (appears on root bus) */
4212 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4215 /* The IVRS table describes the AMD IOMMU */
4216 status = acpi_get_table("IVRS", 0, &header);
4217 if (ACPI_FAILURE(status))
4220 /* Filter out flags not applicable to multifunction */
4221 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4223 return acs_flags & ~(PCI_ACS_RR | PCI_ACS_CR) ? 0 : 1;
4229 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4232 * Effectively selects all downstream ports for whole ThunderX 1
4233 * family by 0xf800 mask (which represents 8 SoCs), while the lower
4234 * bits of device ID are used to indicate which subdevice is used
4237 return (pci_is_pcie(dev) &&
4238 (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) &&
4239 ((dev->device & 0xf800) == 0xa000));
4242 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4245 * Cavium root ports don't advertise an ACS capability. However,
4246 * the RTL internally implements similar protection as if ACS had
4247 * Request Redirection, Completion Redirection, Source Validation,
4248 * and Upstream Forwarding features enabled. Assert that the
4249 * hardware implements and enables equivalent ACS functionality for
4252 acs_flags &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_SV | PCI_ACS_UF);
4254 if (!pci_quirk_cavium_acs_match(dev))
4257 return acs_flags ? 0 : 1;
4260 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4263 * X-Gene root matching this quirk do not allow peer-to-peer
4264 * transactions with others, allowing masking out these bits as if they
4265 * were unimplemented in the ACS capability.
4267 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4269 return acs_flags ? 0 : 1;
4273 * Many Intel PCH root ports do provide ACS-like features to disable peer
4274 * transactions and validate bus numbers in requests, but do not provide an
4275 * actual PCIe ACS capability. This is the list of device IDs known to fall
4276 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4278 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4280 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4281 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4282 /* Cougarpoint PCH */
4283 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4284 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4285 /* Pantherpoint PCH */
4286 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4287 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4288 /* Lynxpoint-H PCH */
4289 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4290 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4291 /* Lynxpoint-LP PCH */
4292 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4293 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4295 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4296 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4297 /* Patsburg (X79) PCH */
4298 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4299 /* Wellsburg (X99) PCH */
4300 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4301 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4302 /* Lynx Point (9 series) PCH */
4303 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4306 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4310 /* Filter out a few obvious non-matches first */
4311 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4314 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4315 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4321 #define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
4323 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4325 u16 flags = dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK ?
4326 INTEL_PCH_ACS_FLAGS : 0;
4328 if (!pci_quirk_intel_pch_acs_match(dev))
4331 return acs_flags & ~flags ? 0 : 1;
4335 * These QCOM root ports do provide ACS-like features to disable peer
4336 * transactions and validate bus numbers in requests, but do not provide an
4337 * actual PCIe ACS capability. Hardware supports source validation but it
4338 * will report the issue as Completer Abort instead of ACS Violation.
4339 * Hardware doesn't support peer-to-peer and each root port is a root
4340 * complex with unique segment numbers. It is not possible for one root
4341 * port to pass traffic to another root port. All PCIe transactions are
4342 * terminated inside the root port.
4344 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4346 u16 flags = (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV);
4347 int ret = acs_flags & ~flags ? 0 : 1;
4349 dev_info(&dev->dev, "Using QCOM ACS Quirk (%d)\n", ret);
4355 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4356 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4357 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4358 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4359 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4360 * control register is at offset 8 instead of 6 and we should probably use
4361 * dword accesses to them. This applies to the following PCI Device IDs, as
4362 * found in volume 1 of the datasheet[2]:
4364 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4365 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4367 * N.B. This doesn't fix what lspci shows.
4369 * The 100 series chipset specification update includes this as errata #23[3].
4371 * The 200 series chipset (Union Point) has the same bug according to the
4372 * specification update (Intel 200 Series Chipset Family Platform Controller
4373 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4374 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4377 * 0xa290-0xa29f PCI Express Root port #{0-16}
4378 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4380 * [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4381 * [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4382 * [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4383 * [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4384 * [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4386 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4388 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4391 switch (dev->device) {
4392 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4393 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4400 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4402 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4407 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4410 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4414 /* see pci_acs_flags_enabled() */
4415 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4416 acs_flags &= (cap | PCI_ACS_EC);
4418 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4420 return acs_flags & ~ctrl ? 0 : 1;
4423 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4426 * SV, TB, and UF are not relevant to multifunction endpoints.
4428 * Multifunction devices are only required to implement RR, CR, and DT
4429 * in their ACS capability if they support peer-to-peer transactions.
4430 * Devices matching this quirk have been verified by the vendor to not
4431 * perform peer-to-peer with other functions, allowing us to mask out
4432 * these bits as if they were unimplemented in the ACS capability.
4434 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4435 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4437 return acs_flags ? 0 : 1;
4440 static const struct pci_dev_acs_enabled {
4443 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4444 } pci_dev_acs_enabled[] = {
4445 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4446 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4447 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4448 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4449 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4450 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4451 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4452 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4453 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4454 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4455 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4456 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4457 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4458 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4459 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4460 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4461 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4462 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4463 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4464 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4465 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4466 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4467 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4468 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4469 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4470 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4471 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4472 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4473 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4474 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4475 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4477 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4478 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4479 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4480 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4481 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4482 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4483 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4485 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4486 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4487 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4488 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4489 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4490 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4491 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4492 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4494 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4495 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4496 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4498 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4499 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4500 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4501 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4502 /* 82571 (Quads omitted due to non-ACS switch) */
4503 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4504 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4505 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4506 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4508 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4509 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4510 /* QCOM QDF2xxx root ports */
4511 { 0x17cb, 0x400, pci_quirk_qcom_rp_acs },
4512 { 0x17cb, 0x401, pci_quirk_qcom_rp_acs },
4513 /* Intel PCH root ports */
4514 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4515 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4516 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4517 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4518 /* Cavium ThunderX */
4519 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4521 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4525 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4527 const struct pci_dev_acs_enabled *i;
4531 * Allow devices that do not expose standard PCIe ACS capabilities
4532 * or control to indicate their support here. Multi-function express
4533 * devices which do not allow internal peer-to-peer between functions,
4534 * but do not implement PCIe ACS may wish to return true here.
4536 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4537 if ((i->vendor == dev->vendor ||
4538 i->vendor == (u16)PCI_ANY_ID) &&
4539 (i->device == dev->device ||
4540 i->device == (u16)PCI_ANY_ID)) {
4541 ret = i->acs_enabled(dev, acs_flags);
4550 /* Config space offset of Root Complex Base Address register */
4551 #define INTEL_LPC_RCBA_REG 0xf0
4552 /* 31:14 RCBA address */
4553 #define INTEL_LPC_RCBA_MASK 0xffffc000
4555 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
4557 /* Backbone Scratch Pad Register */
4558 #define INTEL_BSPR_REG 0x1104
4559 /* Backbone Peer Non-Posted Disable */
4560 #define INTEL_BSPR_REG_BPNPD (1 << 8)
4561 /* Backbone Peer Posted Disable */
4562 #define INTEL_BSPR_REG_BPPD (1 << 9)
4564 /* Upstream Peer Decode Configuration Register */
4565 #define INTEL_UPDCR_REG 0x1114
4566 /* 5:0 Peer Decode Enable bits */
4567 #define INTEL_UPDCR_REG_MASK 0x3f
4569 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
4571 u32 rcba, bspr, updcr;
4572 void __iomem *rcba_mem;
4575 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4576 * are D28:F* and therefore get probed before LPC, thus we can't
4577 * use pci_get_slot/pci_read_config_dword here.
4579 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
4580 INTEL_LPC_RCBA_REG, &rcba);
4581 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
4584 rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
4585 PAGE_ALIGN(INTEL_UPDCR_REG));
4590 * The BSPR can disallow peer cycles, but it's set by soft strap and
4591 * therefore read-only. If both posted and non-posted peer cycles are
4592 * disallowed, we're ok. If either are allowed, then we need to use
4593 * the UPDCR to disable peer decodes for each port. This provides the
4594 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
4596 bspr = readl(rcba_mem + INTEL_BSPR_REG);
4597 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
4598 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
4599 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
4600 if (updcr & INTEL_UPDCR_REG_MASK) {
4601 dev_info(&dev->dev, "Disabling UPDCR peer decodes\n");
4602 updcr &= ~INTEL_UPDCR_REG_MASK;
4603 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
4611 /* Miscellaneous Port Configuration register */
4612 #define INTEL_MPC_REG 0xd8
4613 /* MPC: Invalid Receive Bus Number Check Enable */
4614 #define INTEL_MPC_REG_IRBNCE (1 << 26)
4616 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
4621 * When enabled, the IRBNCE bit of the MPC register enables the
4622 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
4623 * ensures that requester IDs fall within the bus number range
4624 * of the bridge. Enable if not already.
4626 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
4627 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
4628 dev_info(&dev->dev, "Enabling MPC IRBNCE\n");
4629 mpc |= INTEL_MPC_REG_IRBNCE;
4630 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
4634 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
4636 if (!pci_quirk_intel_pch_acs_match(dev))
4639 if (pci_quirk_enable_intel_lpc_acs(dev)) {
4640 dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n");
4644 pci_quirk_enable_intel_rp_mpc_acs(dev);
4646 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
4648 dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n");
4653 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
4658 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4661 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4665 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4666 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4668 ctrl |= (cap & PCI_ACS_SV);
4669 ctrl |= (cap & PCI_ACS_RR);
4670 ctrl |= (cap & PCI_ACS_CR);
4671 ctrl |= (cap & PCI_ACS_UF);
4673 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
4675 dev_info(&dev->dev, "Intel SPT PCH root port ACS workaround enabled\n");
4680 static const struct pci_dev_enable_acs {
4683 int (*enable_acs)(struct pci_dev *dev);
4684 } pci_dev_enable_acs[] = {
4685 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_pch_acs },
4686 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_spt_pch_acs },
4690 int pci_dev_specific_enable_acs(struct pci_dev *dev)
4692 const struct pci_dev_enable_acs *i;
4695 for (i = pci_dev_enable_acs; i->enable_acs; i++) {
4696 if ((i->vendor == dev->vendor ||
4697 i->vendor == (u16)PCI_ANY_ID) &&
4698 (i->device == dev->device ||
4699 i->device == (u16)PCI_ANY_ID)) {
4700 ret = i->enable_acs(dev);
4710 * The PCI capabilities list for Intel DH895xCC VFs (device id 0x0443) with
4711 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
4712 * Next Capability pointer in the MSI Capability Structure should point to
4713 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
4716 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
4721 struct pci_cap_saved_state *state;
4723 /* Bail if the hardware bug is fixed */
4724 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
4727 /* Bail if MSI Capability Structure is not found for some reason */
4728 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
4733 * Bail if Next Capability pointer in the MSI Capability Structure
4734 * is not the expected incorrect 0x00.
4736 pci_read_config_byte(pdev, pos + 1, &next_cap);
4741 * PCIe Capability Structure is expected to be at 0x50 and should
4742 * terminate the list (Next Capability pointer is 0x00). Verify
4743 * Capability Id and Next Capability pointer is as expected.
4744 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
4745 * to correctly set kernel data structures which have already been
4746 * set incorrectly due to the hardware bug.
4749 pci_read_config_word(pdev, pos, ®16);
4750 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
4752 #ifndef PCI_EXP_SAVE_REGS
4753 #define PCI_EXP_SAVE_REGS 7
4755 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
4757 pdev->pcie_cap = pos;
4758 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
4759 pdev->pcie_flags_reg = reg16;
4760 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
4761 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
4763 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
4764 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
4765 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
4766 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
4768 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
4774 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
4778 state->cap.cap_nr = PCI_CAP_ID_EXP;
4779 state->cap.cap_extended = 0;
4780 state->cap.size = size;
4781 cap = (u16 *)&state->cap.data[0];
4782 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
4783 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
4784 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
4785 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
4786 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
4787 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
4788 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
4789 hlist_add_head(&state->next, &pdev->saved_cap_space);
4792 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
4794 /* FLR may cause some 82579 devices to hang. */
4795 static void quirk_intel_no_flr(struct pci_dev *dev)
4797 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
4799 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_intel_no_flr);
4800 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_intel_no_flr);
4802 static void quirk_no_ext_tags(struct pci_dev *pdev)
4804 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
4809 bridge->no_ext_tags = 1;
4810 dev_info(&pdev->dev, "disabling Extended Tags (this device can't handle them)\n");
4812 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
4814 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
4815 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
4816 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
4817 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
4818 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
4819 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
4820 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
4822 #ifdef CONFIG_PCI_ATS
4824 * Some devices have a broken ATS implementation causing IOMMU stalls.
4825 * Don't use ATS for those devices.
4827 static void quirk_no_ats(struct pci_dev *pdev)
4829 dev_info(&pdev->dev, "disabling ATS (broken on this device)\n");
4833 /* AMD Stoney platform GPU */
4834 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats);
4835 #endif /* CONFIG_PCI_ATS */