1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains work-arounds for many known PCI hardware bugs.
4 * Devices present only on certain architectures (host bridges et cetera)
5 * 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 USB quirks
12 * file, where their drivers can use them.
15 #include <linux/bitfield.h>
16 #include <linux/types.h>
17 #include <linux/kernel.h>
18 #include <linux/export.h>
19 #include <linux/pci.h>
20 #include <linux/init.h>
21 #include <linux/delay.h>
22 #include <linux/acpi.h>
23 #include <linux/dmi.h>
24 #include <linux/ioport.h>
25 #include <linux/sched.h>
26 #include <linux/ktime.h>
28 #include <linux/nvme.h>
29 #include <linux/platform_data/x86/apple.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/suspend.h>
32 #include <linux/switchtec.h>
33 #include <asm/dma.h> /* isa_dma_bridge_buggy */
36 static ktime_t fixup_debug_start(struct pci_dev *dev,
37 void (*fn)(struct pci_dev *dev))
40 pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current));
45 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
46 void (*fn)(struct pci_dev *dev))
48 ktime_t delta, rettime;
49 unsigned long long duration;
51 rettime = ktime_get();
52 delta = ktime_sub(rettime, calltime);
53 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
54 if (initcall_debug || duration > 10000)
55 pci_info(dev, "%pS took %lld usecs\n", fn, duration);
58 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
59 struct pci_fixup *end)
64 if ((f->class == (u32) (dev->class >> f->class_shift) ||
65 f->class == (u32) PCI_ANY_ID) &&
66 (f->vendor == dev->vendor ||
67 f->vendor == (u16) PCI_ANY_ID) &&
68 (f->device == dev->device ||
69 f->device == (u16) PCI_ANY_ID)) {
70 void (*hook)(struct pci_dev *dev);
71 #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
72 hook = offset_to_ptr(&f->hook_offset);
76 calltime = fixup_debug_start(dev, hook);
78 fixup_debug_report(dev, calltime, hook);
82 extern struct pci_fixup __start_pci_fixups_early[];
83 extern struct pci_fixup __end_pci_fixups_early[];
84 extern struct pci_fixup __start_pci_fixups_header[];
85 extern struct pci_fixup __end_pci_fixups_header[];
86 extern struct pci_fixup __start_pci_fixups_final[];
87 extern struct pci_fixup __end_pci_fixups_final[];
88 extern struct pci_fixup __start_pci_fixups_enable[];
89 extern struct pci_fixup __end_pci_fixups_enable[];
90 extern struct pci_fixup __start_pci_fixups_resume[];
91 extern struct pci_fixup __end_pci_fixups_resume[];
92 extern struct pci_fixup __start_pci_fixups_resume_early[];
93 extern struct pci_fixup __end_pci_fixups_resume_early[];
94 extern struct pci_fixup __start_pci_fixups_suspend[];
95 extern struct pci_fixup __end_pci_fixups_suspend[];
96 extern struct pci_fixup __start_pci_fixups_suspend_late[];
97 extern struct pci_fixup __end_pci_fixups_suspend_late[];
99 static bool pci_apply_fixup_final_quirks;
101 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
103 struct pci_fixup *start, *end;
106 case pci_fixup_early:
107 start = __start_pci_fixups_early;
108 end = __end_pci_fixups_early;
111 case pci_fixup_header:
112 start = __start_pci_fixups_header;
113 end = __end_pci_fixups_header;
116 case pci_fixup_final:
117 if (!pci_apply_fixup_final_quirks)
119 start = __start_pci_fixups_final;
120 end = __end_pci_fixups_final;
123 case pci_fixup_enable:
124 start = __start_pci_fixups_enable;
125 end = __end_pci_fixups_enable;
128 case pci_fixup_resume:
129 start = __start_pci_fixups_resume;
130 end = __end_pci_fixups_resume;
133 case pci_fixup_resume_early:
134 start = __start_pci_fixups_resume_early;
135 end = __end_pci_fixups_resume_early;
138 case pci_fixup_suspend:
139 start = __start_pci_fixups_suspend;
140 end = __end_pci_fixups_suspend;
143 case pci_fixup_suspend_late:
144 start = __start_pci_fixups_suspend_late;
145 end = __end_pci_fixups_suspend_late;
149 /* stupid compiler warning, you would think with an enum... */
152 pci_do_fixups(dev, start, end);
154 EXPORT_SYMBOL(pci_fixup_device);
156 static int __init pci_apply_final_quirks(void)
158 struct pci_dev *dev = NULL;
162 if (pci_cache_line_size)
163 pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2);
165 pci_apply_fixup_final_quirks = true;
166 for_each_pci_dev(dev) {
167 pci_fixup_device(pci_fixup_final, dev);
169 * If arch hasn't set it explicitly yet, use the CLS
170 * value shared by all PCI devices. If there's a
171 * mismatch, fall back to the default value.
173 if (!pci_cache_line_size) {
174 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
177 if (!tmp || cls == tmp)
180 pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n",
182 pci_dfl_cache_line_size << 2);
183 pci_cache_line_size = pci_dfl_cache_line_size;
187 if (!pci_cache_line_size) {
188 pr_info("PCI: CLS %u bytes, default %u\n", cls << 2,
189 pci_dfl_cache_line_size << 2);
190 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
195 fs_initcall_sync(pci_apply_final_quirks);
198 * Decoding should be disabled for a PCI device during BAR sizing to avoid
199 * conflict. But doing so may cause problems on host bridge and perhaps other
200 * key system devices. For devices that need to have mmio decoding always-on,
201 * we need to set the dev->mmio_always_on bit.
203 static void quirk_mmio_always_on(struct pci_dev *dev)
205 dev->mmio_always_on = 1;
207 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
208 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
211 * The Mellanox Tavor device gives false positive parity errors. Disable
212 * parity error reporting.
214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, pci_disable_parity);
215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, pci_disable_parity);
218 * Deal with broken BIOSes that neglect to enable passive release,
219 * which can cause problems in combination with the 82441FX/PPro MTRRs
221 static void quirk_passive_release(struct pci_dev *dev)
223 struct pci_dev *d = NULL;
227 * We have to make sure a particular bit is set in the PIIX3
228 * ISA bridge, so we have to go out and find it.
230 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
231 pci_read_config_byte(d, 0x82, &dlc);
233 pci_info(d, "PIIX3: Enabling Passive Release\n");
235 pci_write_config_byte(d, 0x82, dlc);
239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
240 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
243 * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a
244 * workaround but VIA don't answer queries. If you happen to have good
245 * contacts at VIA ask them for me please -- Alan
247 * This appears to be BIOS not version dependent. So presumably there is a
250 static void quirk_isa_dma_hangs(struct pci_dev *dev)
252 if (!isa_dma_bridge_buggy) {
253 isa_dma_bridge_buggy = 1;
254 pci_info(dev, "Activating ISA DMA hang workarounds\n");
258 * It's not totally clear which chipsets are the problematic ones. We know
259 * 82C586 and 82C596 variants are affected.
261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
263 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
265 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
266 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
267 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
270 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
271 * for some HT machines to use C4 w/o hanging.
273 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
278 pci_read_config_dword(dev, 0x40, &pmbase);
279 pmbase = pmbase & 0xff80;
283 pci_info(dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
287 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
289 /* Chipsets where PCI->PCI transfers vanish or hang */
290 static void quirk_nopcipci(struct pci_dev *dev)
292 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
293 pci_info(dev, "Disabling direct PCI/PCI transfers\n");
294 pci_pci_problems |= PCIPCI_FAIL;
297 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
298 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
300 static void quirk_nopciamd(struct pci_dev *dev)
303 pci_read_config_byte(dev, 0x08, &rev);
306 pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
307 pci_pci_problems |= PCIAGP_FAIL;
310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
312 /* Triton requires workarounds to be used by the drivers */
313 static void quirk_triton(struct pci_dev *dev)
315 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
316 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
317 pci_pci_problems |= PCIPCI_TRITON;
320 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
321 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
322 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
323 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
326 * VIA Apollo KT133 needs PCI latency patch
327 * Made according to a Windows driver-based patch by George E. Breese;
328 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
329 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on
330 * which Mr Breese based his work.
332 * Updated based on further information from the site and also on
333 * information provided by VIA
335 static void quirk_vialatency(struct pci_dev *dev)
341 * Ok, we have a potential problem chipset here. Now see if we have
342 * a buggy southbridge.
344 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
348 * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A;
350 * Check for buggy part revisions
352 if (p->revision < 0x40 || p->revision > 0x42)
355 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
356 if (p == NULL) /* No problem parts */
359 /* Check for buggy part revisions */
360 if (p->revision < 0x10 || p->revision > 0x12)
365 * Ok we have the problem. Now set the PCI master grant to occur
366 * every master grant. The apparent bug is that under high PCI load
367 * (quite common in Linux of course) you can get data loss when the
368 * CPU is held off the bus for 3 bus master requests. This happens
369 * to include the IDE controllers....
371 * VIA only apply this fix when an SB Live! is present but under
372 * both Linux and Windows this isn't enough, and we have seen
373 * corruption without SB Live! but with things like 3 UDMA IDE
374 * controllers. So we ignore that bit of the VIA recommendation..
376 pci_read_config_byte(dev, 0x76, &busarb);
379 * Set bit 4 and bit 5 of byte 76 to 0x01
380 * "Master priority rotation on every PCI master grant"
384 pci_write_config_byte(dev, 0x76, busarb);
385 pci_info(dev, "Applying VIA southbridge workaround\n");
389 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
390 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
392 /* Must restore this on a resume from RAM */
393 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
394 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
395 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
397 /* VIA Apollo VP3 needs ETBF on BT848/878 */
398 static void quirk_viaetbf(struct pci_dev *dev)
400 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
401 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
402 pci_pci_problems |= PCIPCI_VIAETBF;
405 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
407 static void quirk_vsfx(struct pci_dev *dev)
409 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
410 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
411 pci_pci_problems |= PCIPCI_VSFX;
414 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
417 * ALi Magik requires workarounds to be used by the drivers that DMA to AGP
418 * space. Latency must be set to 0xA and Triton workaround applied too.
419 * [Info kindly provided by ALi]
421 static void quirk_alimagik(struct pci_dev *dev)
423 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
424 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
425 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
431 /* Natoma has some interesting boundary conditions with Zoran stuff at least */
432 static void quirk_natoma(struct pci_dev *dev)
434 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
435 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
436 pci_pci_problems |= PCIPCI_NATOMA;
439 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
440 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
447 * This chip can cause PCI parity errors if config register 0xA0 is read
448 * while DMAs are occurring.
450 static void quirk_citrine(struct pci_dev *dev)
452 dev->cfg_size = 0xA0;
454 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
457 * This chip can cause bus lockups if config addresses above 0x600
458 * are read or written.
460 static void quirk_nfp6000(struct pci_dev *dev)
462 dev->cfg_size = 0x600;
464 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000);
467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
469 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
470 static void quirk_extend_bar_to_page(struct pci_dev *dev)
474 for (i = 0; i < PCI_STD_NUM_BARS; i++) {
475 struct resource *r = &dev->resource[i];
477 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
478 r->end = PAGE_SIZE - 1;
480 r->flags |= IORESOURCE_UNSET;
481 pci_info(dev, "expanded BAR %d to page size: %pR\n",
486 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
489 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
490 * If it's needed, re-allocate the region.
492 static void quirk_s3_64M(struct pci_dev *dev)
494 struct resource *r = &dev->resource[0];
496 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
497 r->flags |= IORESOURCE_UNSET;
502 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
503 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
505 static void quirk_io(struct pci_dev *dev, int pos, unsigned int size,
509 struct pci_bus_region bus_region;
510 struct resource *res = dev->resource + pos;
512 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
517 res->name = pci_name(dev);
518 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
520 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
521 region &= ~(size - 1);
523 /* Convert from PCI bus to resource space */
524 bus_region.start = region;
525 bus_region.end = region + size - 1;
526 pcibios_bus_to_resource(dev->bus, res, &bus_region);
528 pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
529 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
533 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
534 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
535 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
536 * (which conflicts w/ BAR1's memory range).
538 * CS553x's ISA PCI BARs may also be read-only (ref:
539 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
541 static void quirk_cs5536_vsa(struct pci_dev *dev)
543 static char *name = "CS5536 ISA bridge";
545 if (pci_resource_len(dev, 0) != 8) {
546 quirk_io(dev, 0, 8, name); /* SMB */
547 quirk_io(dev, 1, 256, name); /* GPIO */
548 quirk_io(dev, 2, 64, name); /* MFGPT */
549 pci_info(dev, "%s bug detected (incorrect header); workaround applied\n",
553 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
555 static void quirk_io_region(struct pci_dev *dev, int port,
556 unsigned int size, int nr, const char *name)
559 struct pci_bus_region bus_region;
560 struct resource *res = dev->resource + nr;
562 pci_read_config_word(dev, port, ®ion);
563 region &= ~(size - 1);
568 res->name = pci_name(dev);
569 res->flags = IORESOURCE_IO;
571 /* Convert from PCI bus to resource space */
572 bus_region.start = region;
573 bus_region.end = region + size - 1;
574 pcibios_bus_to_resource(dev->bus, res, &bus_region);
576 if (!pci_claim_resource(dev, nr))
577 pci_info(dev, "quirk: %pR claimed by %s\n", res, name);
581 * ATI Northbridge setups MCE the processor if you even read somewhere
582 * between 0x3b0->0x3bb or read 0x3d3
584 static void quirk_ati_exploding_mce(struct pci_dev *dev)
586 pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
587 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
588 request_region(0x3b0, 0x0C, "RadeonIGP");
589 request_region(0x3d3, 0x01, "RadeonIGP");
591 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
594 * In the AMD NL platform, this device ([1022:7912]) has a class code of
595 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
598 * But the dwc3 driver is a more specific driver for this device, and we'd
599 * prefer to use it instead of xhci. To prevent xhci from claiming the
600 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
601 * defines as "USB device (not host controller)". The dwc3 driver can then
602 * claim it based on its Vendor and Device ID.
604 static void quirk_amd_nl_class(struct pci_dev *pdev)
606 u32 class = pdev->class;
608 /* Use "USB Device (not host controller)" class */
609 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
610 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
617 * Synopsys USB 3.x host HAPS platform has a class code of
618 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
619 * devices should use dwc3-haps driver. Change these devices' class code to
620 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming
623 static void quirk_synopsys_haps(struct pci_dev *pdev)
625 u32 class = pdev->class;
627 switch (pdev->device) {
628 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
629 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
630 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31:
631 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
632 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
637 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
638 PCI_CLASS_SERIAL_USB_XHCI, 0,
639 quirk_synopsys_haps);
642 * Let's make the southbridge information explicit instead of having to
643 * worry about people probing the ACPI areas, for example.. (Yes, it
644 * happens, and if you read the wrong ACPI register it will put the machine
645 * to sleep with no way of waking it up again. Bummer).
647 * ALI M7101: Two IO regions pointed to by words at
648 * 0xE0 (64 bytes of ACPI registers)
649 * 0xE2 (32 bytes of SMB registers)
651 static void quirk_ali7101_acpi(struct pci_dev *dev)
653 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
654 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
656 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
658 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
661 u32 mask, size, base;
663 pci_read_config_dword(dev, port, &devres);
664 if ((devres & enable) != enable)
666 mask = (devres >> 16) & 15;
667 base = devres & 0xffff;
670 unsigned int bit = size >> 1;
671 if ((bit & mask) == bit)
676 * For now we only print it out. Eventually we'll want to
677 * reserve it (at least if it's in the 0x1000+ range), but
678 * let's get enough confirmation reports first.
681 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
684 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
687 u32 mask, size, base;
689 pci_read_config_dword(dev, port, &devres);
690 if ((devres & enable) != enable)
692 base = devres & 0xffff0000;
693 mask = (devres & 0x3f) << 16;
696 unsigned int bit = size >> 1;
697 if ((bit & mask) == bit)
703 * For now we only print it out. Eventually we'll want to
704 * reserve it, but let's get enough confirmation reports first.
707 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
711 * PIIX4 ACPI: Two IO regions pointed to by longwords at
712 * 0x40 (64 bytes of ACPI registers)
713 * 0x90 (16 bytes of SMB registers)
714 * and a few strange programmable PIIX4 device resources.
716 static void quirk_piix4_acpi(struct pci_dev *dev)
720 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
721 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
723 /* Device resource A has enables for some of the other ones */
724 pci_read_config_dword(dev, 0x5c, &res_a);
726 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
727 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
729 /* Device resource D is just bitfields for static resources */
731 /* Device 12 enabled? */
732 if (res_a & (1 << 29)) {
733 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
734 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
736 /* Device 13 enabled? */
737 if (res_a & (1 << 30)) {
738 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
739 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
741 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
742 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
744 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
745 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
747 #define ICH_PMBASE 0x40
748 #define ICH_ACPI_CNTL 0x44
749 #define ICH4_ACPI_EN 0x10
750 #define ICH6_ACPI_EN 0x80
751 #define ICH4_GPIOBASE 0x58
752 #define ICH4_GPIO_CNTL 0x5c
753 #define ICH4_GPIO_EN 0x10
754 #define ICH6_GPIOBASE 0x48
755 #define ICH6_GPIO_CNTL 0x4c
756 #define ICH6_GPIO_EN 0x10
759 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
760 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
761 * 0x58 (64 bytes of GPIO I/O space)
763 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
768 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
769 * with low legacy (and fixed) ports. We don't know the decoding
770 * priority and can't tell whether the legacy device or the one created
771 * here is really at that address. This happens on boards with broken
774 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
775 if (enable & ICH4_ACPI_EN)
776 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
777 "ICH4 ACPI/GPIO/TCO");
779 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
780 if (enable & ICH4_GPIO_EN)
781 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
784 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
785 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
786 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
787 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
788 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
789 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
790 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
791 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
792 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
793 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
795 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
799 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
800 if (enable & ICH6_ACPI_EN)
801 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
802 "ICH6 ACPI/GPIO/TCO");
804 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
805 if (enable & ICH6_GPIO_EN)
806 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
810 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
811 const char *name, int dynsize)
816 pci_read_config_dword(dev, reg, &val);
824 * This is not correct. It is 16, 32 or 64 bytes depending on
825 * register D31:F0:ADh bits 5:4.
827 * But this gets us at least _part_ of it.
836 * Just print it out for now. We should reserve it after more
839 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
842 static void quirk_ich6_lpc(struct pci_dev *dev)
844 /* Shared ACPI/GPIO decode with all ICH6+ */
845 ich6_lpc_acpi_gpio(dev);
847 /* ICH6-specific generic IO decode */
848 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
849 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
851 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
852 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
854 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
860 pci_read_config_dword(dev, reg, &val);
866 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */
868 mask = (val >> 16) & 0xfc;
872 * Just print it out for now. We should reserve it after more
875 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
878 /* ICH7-10 has the same common LPC generic IO decode registers */
879 static void quirk_ich7_lpc(struct pci_dev *dev)
881 /* We share the common ACPI/GPIO decode with ICH6 */
882 ich6_lpc_acpi_gpio(dev);
884 /* And have 4 ICH7+ generic decodes */
885 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
886 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
887 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
888 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
890 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
891 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
892 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
895 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
896 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
897 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
898 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
899 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
900 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
901 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
902 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
905 * VIA ACPI: One IO region pointed to by longword at
906 * 0x48 or 0x20 (256 bytes of ACPI registers)
908 static void quirk_vt82c586_acpi(struct pci_dev *dev)
910 if (dev->revision & 0x10)
911 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
914 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
917 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
918 * 0x48 (256 bytes of ACPI registers)
919 * 0x70 (128 bytes of hardware monitoring register)
920 * 0x90 (16 bytes of SMB registers)
922 static void quirk_vt82c686_acpi(struct pci_dev *dev)
924 quirk_vt82c586_acpi(dev);
926 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
929 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
931 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
934 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
935 * 0x88 (128 bytes of power management registers)
936 * 0xd0 (16 bytes of SMB registers)
938 static void quirk_vt8235_acpi(struct pci_dev *dev)
940 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
941 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
943 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
946 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast
947 * back-to-back: Disable fast back-to-back on the secondary bus segment
949 static void quirk_xio2000a(struct pci_dev *dev)
951 struct pci_dev *pdev;
954 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
955 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
956 pci_read_config_word(pdev, PCI_COMMAND, &command);
957 if (command & PCI_COMMAND_FAST_BACK)
958 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
961 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
964 #ifdef CONFIG_X86_IO_APIC
966 #include <asm/io_apic.h>
969 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
970 * devices to the external APIC.
972 * TODO: When we have device-specific interrupt routers, this code will go
975 static void quirk_via_ioapic(struct pci_dev *dev)
980 tmp = 0; /* nothing routed to external APIC */
982 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
984 pci_info(dev, "%s VIA external APIC routing\n",
985 tmp ? "Enabling" : "Disabling");
987 /* Offset 0x58: External APIC IRQ output control */
988 pci_write_config_byte(dev, 0x58, tmp);
990 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
991 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
994 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
995 * This leads to doubled level interrupt rates.
996 * Set this bit to get rid of cycle wastage.
997 * Otherwise uncritical.
999 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
1002 #define BYPASS_APIC_DEASSERT 8
1004 pci_read_config_byte(dev, 0x5B, &misc_control2);
1005 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
1006 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
1007 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
1010 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1011 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1014 * The AMD IO-APIC can hang the box when an APIC IRQ is masked.
1015 * We check all revs >= B0 (yet not in the pre production!) as the bug
1016 * is currently marked NoFix
1018 * We have multiple reports of hangs with this chipset that went away with
1019 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1020 * of course. However the advice is demonstrably good even if so.
1022 static void quirk_amd_ioapic(struct pci_dev *dev)
1024 if (dev->revision >= 0x02) {
1025 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1026 pci_warn(dev, " : booting with the \"noapic\" option\n");
1029 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1030 #endif /* CONFIG_X86_IO_APIC */
1032 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
1034 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
1036 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */
1037 if (dev->subsystem_device == 0xa118)
1038 dev->sriov->link = dev->devfn;
1040 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
1044 * Some settings of MMRBC can lead to data corruption so block changes.
1045 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
1047 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
1049 if (dev->subordinate && dev->revision <= 0x12) {
1050 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
1052 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
1055 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1058 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up
1059 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register
1060 * at all. Therefore it seems like setting the pci_dev's IRQ to the value
1061 * of the ACPI SCI interrupt is only done for convenience.
1064 static void quirk_via_acpi(struct pci_dev *d)
1068 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */
1069 pci_read_config_byte(d, 0x42, &irq);
1071 if (irq && (irq != 2))
1074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
1075 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1077 /* VIA bridges which have VLink */
1078 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
1080 static void quirk_via_bridge(struct pci_dev *dev)
1082 /* See what bridge we have and find the device ranges */
1083 switch (dev->device) {
1084 case PCI_DEVICE_ID_VIA_82C686:
1086 * The VT82C686 is special; it attaches to PCI and can have
1087 * any device number. All its subdevices are functions of
1088 * that single device.
1090 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
1091 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
1093 case PCI_DEVICE_ID_VIA_8237:
1094 case PCI_DEVICE_ID_VIA_8237A:
1095 via_vlink_dev_lo = 15;
1097 case PCI_DEVICE_ID_VIA_8235:
1098 via_vlink_dev_lo = 16;
1100 case PCI_DEVICE_ID_VIA_8231:
1101 case PCI_DEVICE_ID_VIA_8233_0:
1102 case PCI_DEVICE_ID_VIA_8233A:
1103 case PCI_DEVICE_ID_VIA_8233C_0:
1104 via_vlink_dev_lo = 17;
1108 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
1109 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
1110 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
1111 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
1112 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
1113 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
1114 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
1115 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
1118 * quirk_via_vlink - VIA VLink IRQ number update
1121 * If the device we are dealing with is on a PIC IRQ we need to ensure that
1122 * the IRQ line register which usually is not relevant for PCI cards, is
1123 * actually written so that interrupts get sent to the right place.
1125 * We only do this on systems where a VIA south bridge was detected, and
1126 * only for VIA devices on the motherboard (see quirk_via_bridge above).
1128 static void quirk_via_vlink(struct pci_dev *dev)
1132 /* Check if we have VLink at all */
1133 if (via_vlink_dev_lo == -1)
1138 /* Don't quirk interrupts outside the legacy IRQ range */
1139 if (!new_irq || new_irq > 15)
1142 /* Internal device ? */
1143 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
1144 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1148 * This is an internal VLink device on a PIC interrupt. The BIOS
1149 * ought to have set this but may not have, so we redo it.
1151 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
1152 if (new_irq != irq) {
1153 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n",
1155 udelay(15); /* unknown if delay really needed */
1156 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
1159 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
1162 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID
1163 * of VT82C597 for backward compatibility. We need to switch it off to be
1164 * able to recognize the real type of the chip.
1166 static void quirk_vt82c598_id(struct pci_dev *dev)
1168 pci_write_config_byte(dev, 0xfc, 0);
1169 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
1171 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1174 * CardBus controllers have a legacy base address that enables them to
1175 * respond as i82365 pcmcia controllers. We don't want them to do this
1176 * even if the Linux CardBus driver is not loaded, because the Linux i82365
1177 * driver does not (and should not) handle CardBus.
1179 static void quirk_cardbus_legacy(struct pci_dev *dev)
1181 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1183 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1184 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1185 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1186 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1189 * Following the PCI ordering rules is optional on the AMD762. I'm not sure
1190 * what the designers were smoking but let's not inhale...
1192 * To be fair to AMD, it follows the spec by default, it's BIOS people who
1195 static void quirk_amd_ordering(struct pci_dev *dev)
1198 pci_read_config_dword(dev, 0x4C, &pcic);
1199 if ((pcic & 6) != 6) {
1201 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1202 pci_write_config_dword(dev, 0x4C, pcic);
1203 pci_read_config_dword(dev, 0x84, &pcic);
1204 pcic |= (1 << 23); /* Required in this mode */
1205 pci_write_config_dword(dev, 0x84, pcic);
1208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1209 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1212 * DreamWorks-provided workaround for Dunord I-3000 problem
1214 * This card decodes and responds to addresses not apparently assigned to
1215 * it. We force a larger allocation to ensure that nothing gets put too
1218 static void quirk_dunord(struct pci_dev *dev)
1220 struct resource *r = &dev->resource[1];
1222 r->flags |= IORESOURCE_UNSET;
1226 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1229 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive
1230 * decoding (transparent), and does indicate this in the ProgIf.
1231 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01.
1233 static void quirk_transparent_bridge(struct pci_dev *dev)
1235 dev->transparent = 1;
1237 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1238 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1241 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce
1242 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets
1243 * found at http://www.national.com/analog for info on what these bits do.
1244 * <christer@weinigel.se>
1246 static void quirk_mediagx_master(struct pci_dev *dev)
1250 pci_read_config_byte(dev, 0x41, ®);
1253 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1255 pci_write_config_byte(dev, 0x41, reg);
1258 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1259 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1262 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but
1263 * in the odd case it is not the results are corruption hence the presence
1266 static void quirk_disable_pxb(struct pci_dev *pdev)
1270 if (pdev->revision != 0x04) /* Only C0 requires this */
1272 pci_read_config_word(pdev, 0x40, &config);
1273 if (config & (1<<6)) {
1275 pci_write_config_word(pdev, 0x40, config);
1276 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n");
1279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1280 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1282 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1284 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1287 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1289 pci_read_config_byte(pdev, 0x40, &tmp);
1290 pci_write_config_byte(pdev, 0x40, tmp|1);
1291 pci_write_config_byte(pdev, 0x9, 1);
1292 pci_write_config_byte(pdev, 0xa, 6);
1293 pci_write_config_byte(pdev, 0x40, tmp);
1295 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1296 pci_info(pdev, "set SATA to AHCI mode\n");
1299 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1300 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1302 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1304 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1305 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1306 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1308 /* Serverworks CSB5 IDE does not fully support native mode */
1309 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1312 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1316 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1317 /* PCI layer will sort out resources */
1320 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1322 /* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */
1323 static void quirk_ide_samemode(struct pci_dev *pdev)
1327 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1329 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1330 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n");
1333 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1336 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1338 /* Some ATA devices break if put into D3 */
1339 static void quirk_no_ata_d3(struct pci_dev *pdev)
1341 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1343 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1344 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1345 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1346 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1347 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1348 /* ALi loses some register settings that we cannot then restore */
1349 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1350 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1351 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1352 occur when mode detecting */
1353 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1354 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1357 * This was originally an Alpha-specific thing, but it really fits here.
1358 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1360 static void quirk_eisa_bridge(struct pci_dev *dev)
1362 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1367 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1368 * is not activated. The myth is that Asus said that they do not want the
1369 * users to be irritated by just another PCI Device in the Win98 device
1370 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1371 * package 2.7.0 for details)
1373 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1374 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1375 * becomes necessary to do this tweak in two steps -- the chosen trigger
1376 * is either the Host bridge (preferred) or on-board VGA controller.
1378 * Note that we used to unhide the SMBus that way on Toshiba laptops
1379 * (Satellite A40 and Tecra M2) but then found that the thermal management
1380 * was done by SMM code, which could cause unsynchronized concurrent
1381 * accesses to the SMBus registers, with potentially bad effects. Thus you
1382 * should be very careful when adding new entries: if SMM is accessing the
1383 * Intel SMBus, this is a very good reason to leave it hidden.
1385 * Likewise, many recent laptops use ACPI for thermal management. If the
1386 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1387 * natively, and keeping the SMBus hidden is the right thing to do. If you
1388 * are about to add an entry in the table below, please first disassemble
1389 * the DSDT and double-check that there is no code accessing the SMBus.
1391 static int asus_hides_smbus;
1393 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1395 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1396 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1397 switch (dev->subsystem_device) {
1398 case 0x8025: /* P4B-LX */
1399 case 0x8070: /* P4B */
1400 case 0x8088: /* P4B533 */
1401 case 0x1626: /* L3C notebook */
1402 asus_hides_smbus = 1;
1404 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1405 switch (dev->subsystem_device) {
1406 case 0x80b1: /* P4GE-V */
1407 case 0x80b2: /* P4PE */
1408 case 0x8093: /* P4B533-V */
1409 asus_hides_smbus = 1;
1411 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1412 switch (dev->subsystem_device) {
1413 case 0x8030: /* P4T533 */
1414 asus_hides_smbus = 1;
1416 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1417 switch (dev->subsystem_device) {
1418 case 0x8070: /* P4G8X Deluxe */
1419 asus_hides_smbus = 1;
1421 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1422 switch (dev->subsystem_device) {
1423 case 0x80c9: /* PU-DLS */
1424 asus_hides_smbus = 1;
1426 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1427 switch (dev->subsystem_device) {
1428 case 0x1751: /* M2N notebook */
1429 case 0x1821: /* M5N notebook */
1430 case 0x1897: /* A6L notebook */
1431 asus_hides_smbus = 1;
1433 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1434 switch (dev->subsystem_device) {
1435 case 0x184b: /* W1N notebook */
1436 case 0x186a: /* M6Ne notebook */
1437 asus_hides_smbus = 1;
1439 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1440 switch (dev->subsystem_device) {
1441 case 0x80f2: /* P4P800-X */
1442 asus_hides_smbus = 1;
1444 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1445 switch (dev->subsystem_device) {
1446 case 0x1882: /* M6V notebook */
1447 case 0x1977: /* A6VA notebook */
1448 asus_hides_smbus = 1;
1450 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1451 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1452 switch (dev->subsystem_device) {
1453 case 0x088C: /* HP Compaq nc8000 */
1454 case 0x0890: /* HP Compaq nc6000 */
1455 asus_hides_smbus = 1;
1457 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1458 switch (dev->subsystem_device) {
1459 case 0x12bc: /* HP D330L */
1460 case 0x12bd: /* HP D530 */
1461 case 0x006a: /* HP Compaq nx9500 */
1462 asus_hides_smbus = 1;
1464 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1465 switch (dev->subsystem_device) {
1466 case 0x12bf: /* HP xw4100 */
1467 asus_hides_smbus = 1;
1469 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1470 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1471 switch (dev->subsystem_device) {
1472 case 0xC00C: /* Samsung P35 notebook */
1473 asus_hides_smbus = 1;
1475 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1476 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1477 switch (dev->subsystem_device) {
1478 case 0x0058: /* Compaq Evo N620c */
1479 asus_hides_smbus = 1;
1481 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1482 switch (dev->subsystem_device) {
1483 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1484 /* Motherboard doesn't have Host bridge
1485 * subvendor/subdevice IDs, therefore checking
1486 * its on-board VGA controller */
1487 asus_hides_smbus = 1;
1489 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1490 switch (dev->subsystem_device) {
1491 case 0x00b8: /* Compaq Evo D510 CMT */
1492 case 0x00b9: /* Compaq Evo D510 SFF */
1493 case 0x00ba: /* Compaq Evo D510 USDT */
1494 /* Motherboard doesn't have Host bridge
1495 * subvendor/subdevice IDs and on-board VGA
1496 * controller is disabled if an AGP card is
1497 * inserted, therefore checking USB UHCI
1499 asus_hides_smbus = 1;
1501 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1502 switch (dev->subsystem_device) {
1503 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1504 /* Motherboard doesn't have host bridge
1505 * subvendor/subdevice IDs, therefore checking
1506 * its on-board VGA controller */
1507 asus_hides_smbus = 1;
1511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1516 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1517 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1518 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1519 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1520 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1522 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1523 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1524 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1526 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1530 if (likely(!asus_hides_smbus))
1533 pci_read_config_word(dev, 0xF2, &val);
1535 pci_write_config_word(dev, 0xF2, val & (~0x8));
1536 pci_read_config_word(dev, 0xF2, &val);
1538 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1541 pci_info(dev, "Enabled i801 SMBus device\n");
1544 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1545 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1546 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1547 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1548 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1549 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1550 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1551 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1552 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1553 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1554 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1555 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1556 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1557 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1559 /* It appears we just have one such device. If not, we have a warning */
1560 static void __iomem *asus_rcba_base;
1561 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1565 if (likely(!asus_hides_smbus))
1567 WARN_ON(asus_rcba_base);
1569 pci_read_config_dword(dev, 0xF0, &rcba);
1570 /* use bits 31:14, 16 kB aligned */
1571 asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000);
1572 if (asus_rcba_base == NULL)
1576 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1580 if (likely(!asus_hides_smbus || !asus_rcba_base))
1583 /* read the Function Disable register, dword mode only */
1584 val = readl(asus_rcba_base + 0x3418);
1586 /* enable the SMBus device */
1587 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418);
1590 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1592 if (likely(!asus_hides_smbus || !asus_rcba_base))
1595 iounmap(asus_rcba_base);
1596 asus_rcba_base = NULL;
1597 pci_info(dev, "Enabled ICH6/i801 SMBus device\n");
1600 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1602 asus_hides_smbus_lpc_ich6_suspend(dev);
1603 asus_hides_smbus_lpc_ich6_resume_early(dev);
1604 asus_hides_smbus_lpc_ich6_resume(dev);
1606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1607 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1608 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1609 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1611 /* SiS 96x south bridge: BIOS typically hides SMBus device... */
1612 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1615 pci_read_config_byte(dev, 0x77, &val);
1617 pci_info(dev, "Enabling SiS 96x SMBus\n");
1618 pci_write_config_byte(dev, 0x77, val & ~0x10);
1621 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1622 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1623 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1624 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1625 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1626 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1627 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1628 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1631 * ... This is further complicated by the fact that some SiS96x south
1632 * bridges pretend to be 85C503/5513 instead. In that case see if we
1633 * spotted a compatible north bridge to make sure.
1634 * (pci_find_device() doesn't work yet)
1636 * We can also enable the sis96x bit in the discovery register..
1638 #define SIS_DETECT_REGISTER 0x40
1640 static void quirk_sis_503(struct pci_dev *dev)
1645 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1646 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1647 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1648 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1649 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1654 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case
1655 * it has already been processed. (Depends on link order, which is
1656 * apparently not guaranteed)
1658 dev->device = devid;
1659 quirk_sis_96x_smbus(dev);
1661 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1662 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1665 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1666 * and MC97 modem controller are disabled when a second PCI soundcard is
1667 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1670 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1673 int asus_hides_ac97 = 0;
1675 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1676 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1677 asus_hides_ac97 = 1;
1680 if (!asus_hides_ac97)
1683 pci_read_config_byte(dev, 0x50, &val);
1685 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1686 pci_read_config_byte(dev, 0x50, &val);
1688 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1691 pci_info(dev, "Enabled onboard AC97/MC97 devices\n");
1694 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1695 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1697 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1700 * If we are using libata we can drive this chip properly but must do this
1701 * early on to make the additional device appear during the PCI scanning.
1703 static void quirk_jmicron_ata(struct pci_dev *pdev)
1705 u32 conf1, conf5, class;
1708 /* Only poke fn 0 */
1709 if (PCI_FUNC(pdev->devfn))
1712 pci_read_config_dword(pdev, 0x40, &conf1);
1713 pci_read_config_dword(pdev, 0x80, &conf5);
1715 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1716 conf5 &= ~(1 << 24); /* Clear bit 24 */
1718 switch (pdev->device) {
1719 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1720 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1721 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1722 /* The controller should be in single function ahci mode */
1723 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1726 case PCI_DEVICE_ID_JMICRON_JMB365:
1727 case PCI_DEVICE_ID_JMICRON_JMB366:
1728 /* Redirect IDE second PATA port to the right spot */
1731 case PCI_DEVICE_ID_JMICRON_JMB361:
1732 case PCI_DEVICE_ID_JMICRON_JMB363:
1733 case PCI_DEVICE_ID_JMICRON_JMB369:
1734 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1735 /* Set the class codes correctly and then direct IDE 0 */
1736 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1739 case PCI_DEVICE_ID_JMICRON_JMB368:
1740 /* The controller should be in single function IDE mode */
1741 conf1 |= 0x00C00000; /* Set 22, 23 */
1745 pci_write_config_dword(pdev, 0x40, conf1);
1746 pci_write_config_dword(pdev, 0x80, conf5);
1748 /* Update pdev accordingly */
1749 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1750 pdev->hdr_type = hdr & 0x7f;
1751 pdev->multifunction = !!(hdr & 0x80);
1753 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1754 pdev->class = class >> 8;
1756 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1757 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1758 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1759 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1760 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1761 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1762 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1763 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1764 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1765 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1766 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1767 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1768 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1769 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1770 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1771 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1772 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1773 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1777 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1779 if (dev->multifunction) {
1780 device_disable_async_suspend(&dev->dev);
1781 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1784 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1785 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1786 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1787 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1789 #ifdef CONFIG_X86_IO_APIC
1790 static void quirk_alder_ioapic(struct pci_dev *pdev)
1794 if ((pdev->class >> 8) != 0xff00)
1798 * The first BAR is the location of the IO-APIC... we must
1799 * not touch this (and it's already covered by the fixmap), so
1800 * forcibly insert it into the resource tree.
1802 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1803 insert_resource(&iomem_resource, &pdev->resource[0]);
1806 * The next five BARs all seem to be rubbish, so just clean
1809 for (i = 1; i < PCI_STD_NUM_BARS; i++)
1810 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1812 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1815 static void quirk_no_msi(struct pci_dev *dev)
1817 pci_info(dev, "avoiding MSI to work around a hardware defect\n");
1820 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4386, quirk_no_msi);
1821 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4387, quirk_no_msi);
1822 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4388, quirk_no_msi);
1823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4389, quirk_no_msi);
1824 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438a, quirk_no_msi);
1825 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438b, quirk_no_msi);
1827 static void quirk_pcie_mch(struct pci_dev *pdev)
1831 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1832 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1833 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1835 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1838 * HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
1839 * actually on the AMBA bus. These fake PCI devices can support SVA via
1840 * SMMU stall feature, by setting dma-can-stall for ACPI platforms.
1842 * Normally stalling must not be enabled for PCI devices, since it would
1843 * break the PCI requirement for free-flowing writes and may lead to
1844 * deadlock. We expect PCI devices to support ATS and PRI if they want to
1845 * be fault-tolerant, so there's no ACPI binding to describe anything else,
1846 * even when a "PCI" device turns out to be a regular old SoC device
1847 * dressed up as a RCiEP and normal rules don't apply.
1849 static void quirk_huawei_pcie_sva(struct pci_dev *pdev)
1851 struct property_entry properties[] = {
1852 PROPERTY_ENTRY_BOOL("dma-can-stall"),
1856 if (pdev->revision != 0x21 && pdev->revision != 0x30)
1859 pdev->pasid_no_tlp = 1;
1862 * Set the dma-can-stall property on ACPI platforms. Device tree
1863 * can set it directly.
1865 if (!pdev->dev.of_node &&
1866 device_create_managed_software_node(&pdev->dev, properties, NULL))
1867 pci_warn(pdev, "could not add stall property");
1869 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva);
1870 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva);
1871 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva);
1872 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva);
1873 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva);
1874 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva);
1877 * It's possible for the MSI to get corrupted if SHPC and ACPI are used
1878 * together on certain PXH-based systems.
1880 static void quirk_pcie_pxh(struct pci_dev *dev)
1883 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n");
1885 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1886 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1887 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1888 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1889 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1892 * Some Intel PCI Express chipsets have trouble with downstream device
1895 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1897 pci_pm_d3hot_delay = 120;
1900 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1901 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1902 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1903 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1904 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1905 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1906 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1907 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1908 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1909 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1910 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1911 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1912 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1913 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1914 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1915 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1916 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1917 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1918 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1919 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1920 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1922 static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay)
1924 if (dev->d3hot_delay >= delay)
1927 dev->d3hot_delay = delay;
1928 pci_info(dev, "extending delay after power-on from D3hot to %d msec\n",
1932 static void quirk_radeon_pm(struct pci_dev *dev)
1934 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1935 dev->subsystem_device == 0x00e2)
1936 quirk_d3hot_delay(dev, 20);
1938 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1941 * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle.
1942 * https://bugzilla.kernel.org/show_bug.cgi?id=205587
1944 * The kernel attempts to transition these devices to D3cold, but that seems
1945 * to be ineffective on the platforms in question; the PCI device appears to
1946 * remain on in D3hot state. The D3hot-to-D0 transition then requires an
1947 * extended delay in order to succeed.
1949 static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev)
1951 quirk_d3hot_delay(dev, 20);
1953 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot);
1954 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot);
1955 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot);
1957 #ifdef CONFIG_X86_IO_APIC
1958 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1960 noioapicreroute = 1;
1961 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1966 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1968 * Systems to exclude from boot interrupt reroute quirks
1971 .callback = dmi_disable_ioapicreroute,
1972 .ident = "ASUSTek Computer INC. M2N-LR",
1974 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1975 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1982 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1983 * remap the original interrupt in the Linux kernel to the boot interrupt, so
1984 * that a PCI device's interrupt handler is installed on the boot interrupt
1987 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1989 dmi_check_system(boot_interrupt_dmi_table);
1990 if (noioapicquirk || noioapicreroute)
1993 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1994 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n",
1995 dev->vendor, dev->device);
1997 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1998 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1999 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2000 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2001 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2002 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2003 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2004 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2005 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
2006 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
2007 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2008 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2009 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2010 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2011 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2012 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2015 * On some chipsets we can disable the generation of legacy INTx boot
2020 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no
2021 * 300641-004US, section 5.7.3.
2023 * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003.
2024 * Core IO on Xeon E5 v2, see Intel order no 329188-003.
2025 * Core IO on Xeon E7 v2, see Intel order no 329595-002.
2026 * Core IO on Xeon E5 v3, see Intel order no 330784-003.
2027 * Core IO on Xeon E7 v3, see Intel order no 332315-001US.
2028 * Core IO on Xeon E5 v4, see Intel order no 333810-002US.
2029 * Core IO on Xeon E7 v4, see Intel order no 332315-001US.
2030 * Core IO on Xeon D-1500, see Intel order no 332051-001.
2031 * Core IO on Xeon Scalable, see Intel order no 610950.
2033 #define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */
2034 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
2036 #define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */
2037 #define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25)
2039 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
2041 u16 pci_config_word;
2042 u32 pci_config_dword;
2047 switch (dev->device) {
2048 case PCI_DEVICE_ID_INTEL_ESB_10:
2049 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2051 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
2052 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2055 case 0x3c28: /* Xeon E5 1600/2600/4600 */
2056 case 0x0e28: /* Xeon E5/E7 V2 */
2057 case 0x2f28: /* Xeon E5/E7 V3,V4 */
2058 case 0x6f28: /* Xeon D-1500 */
2059 case 0x2034: /* Xeon Scalable Family */
2060 pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2062 pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH;
2063 pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2069 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2070 dev->vendor, dev->device);
2073 * Device 29 Func 5 Device IDs of IO-APIC
2074 * containing ABAR—APIC1 Alternate Base Address Register
2076 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2077 quirk_disable_intel_boot_interrupt);
2078 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2079 quirk_disable_intel_boot_interrupt);
2082 * Device 5 Func 0 Device IDs of Core IO modules/hubs
2083 * containing Coherent Interface Protocol Interrupt Control
2085 * Device IDs obtained from volume 2 datasheets of commented
2088 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28,
2089 quirk_disable_intel_boot_interrupt);
2090 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28,
2091 quirk_disable_intel_boot_interrupt);
2092 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28,
2093 quirk_disable_intel_boot_interrupt);
2094 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28,
2095 quirk_disable_intel_boot_interrupt);
2096 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034,
2097 quirk_disable_intel_boot_interrupt);
2098 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28,
2099 quirk_disable_intel_boot_interrupt);
2100 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28,
2101 quirk_disable_intel_boot_interrupt);
2102 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28,
2103 quirk_disable_intel_boot_interrupt);
2104 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28,
2105 quirk_disable_intel_boot_interrupt);
2106 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034,
2107 quirk_disable_intel_boot_interrupt);
2109 /* Disable boot interrupts on HT-1000 */
2110 #define BC_HT1000_FEATURE_REG 0x64
2111 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
2112 #define BC_HT1000_MAP_IDX 0xC00
2113 #define BC_HT1000_MAP_DATA 0xC01
2115 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
2117 u32 pci_config_dword;
2123 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
2124 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
2125 BC_HT1000_PIC_REGS_ENABLE);
2127 for (irq = 0x10; irq < 0x10 + 32; irq++) {
2128 outb(irq, BC_HT1000_MAP_IDX);
2129 outb(0x00, BC_HT1000_MAP_DATA);
2132 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
2134 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2135 dev->vendor, dev->device);
2137 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2138 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2140 /* Disable boot interrupts on AMD and ATI chipsets */
2143 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
2144 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
2145 * (due to an erratum).
2147 #define AMD_813X_MISC 0x40
2148 #define AMD_813X_NOIOAMODE (1<<0)
2149 #define AMD_813X_REV_B1 0x12
2150 #define AMD_813X_REV_B2 0x13
2152 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
2154 u32 pci_config_dword;
2158 if ((dev->revision == AMD_813X_REV_B1) ||
2159 (dev->revision == AMD_813X_REV_B2))
2162 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
2163 pci_config_dword &= ~AMD_813X_NOIOAMODE;
2164 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
2166 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2167 dev->vendor, dev->device);
2169 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2170 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2171 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2172 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2174 #define AMD_8111_PCI_IRQ_ROUTING 0x56
2176 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
2178 u16 pci_config_word;
2183 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
2184 if (!pci_config_word) {
2185 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n",
2186 dev->vendor, dev->device);
2189 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
2190 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2191 dev->vendor, dev->device);
2193 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2194 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2195 #endif /* CONFIG_X86_IO_APIC */
2198 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
2199 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
2200 * Re-allocate the region if needed...
2202 static void quirk_tc86c001_ide(struct pci_dev *dev)
2204 struct resource *r = &dev->resource[0];
2206 if (r->start & 0x8) {
2207 r->flags |= IORESOURCE_UNSET;
2212 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
2213 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
2214 quirk_tc86c001_ide);
2217 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the
2218 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
2219 * being read correctly if bit 7 of the base address is set.
2220 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
2221 * Re-allocate the regions to a 256-byte boundary if necessary.
2223 static void quirk_plx_pci9050(struct pci_dev *dev)
2227 /* Fixed in revision 2 (PCI 9052). */
2228 if (dev->revision >= 2)
2230 for (bar = 0; bar <= 1; bar++)
2231 if (pci_resource_len(dev, bar) == 0x80 &&
2232 (pci_resource_start(dev, bar) & 0x80)) {
2233 struct resource *r = &dev->resource[bar];
2234 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
2236 r->flags |= IORESOURCE_UNSET;
2241 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2244 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
2245 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
2246 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
2247 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
2249 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
2252 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
2253 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
2255 static void quirk_netmos(struct pci_dev *dev)
2257 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
2258 unsigned int num_serial = dev->subsystem_device & 0xf;
2261 * These Netmos parts are multiport serial devices with optional
2262 * parallel ports. Even when parallel ports are present, they
2263 * are identified as class SERIAL, which means the serial driver
2264 * will claim them. To prevent this, mark them as class OTHER.
2265 * These combo devices should be claimed by parport_serial.
2267 * The subdevice ID is of the form 0x00PS, where <P> is the number
2268 * of parallel ports and <S> is the number of serial ports.
2270 switch (dev->device) {
2271 case PCI_DEVICE_ID_NETMOS_9835:
2272 /* Well, this rule doesn't hold for the following 9835 device */
2273 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
2274 dev->subsystem_device == 0x0299)
2277 case PCI_DEVICE_ID_NETMOS_9735:
2278 case PCI_DEVICE_ID_NETMOS_9745:
2279 case PCI_DEVICE_ID_NETMOS_9845:
2280 case PCI_DEVICE_ID_NETMOS_9855:
2282 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
2283 dev->device, num_parallel, num_serial);
2284 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
2285 (dev->class & 0xff);
2289 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
2290 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
2292 static void quirk_e100_interrupt(struct pci_dev *dev)
2298 switch (dev->device) {
2299 /* PCI IDs taken from drivers/net/e100.c */
2301 case 0x1030 ... 0x1034:
2302 case 0x1038 ... 0x103E:
2303 case 0x1050 ... 0x1057:
2305 case 0x1064 ... 0x106B:
2306 case 0x1091 ... 0x1095:
2319 * Some firmware hands off the e100 with interrupts enabled,
2320 * which can cause a flood of interrupts if packets are
2321 * received before the driver attaches to the device. So
2322 * disable all e100 interrupts here. The driver will
2323 * re-enable them when it's ready.
2325 pci_read_config_word(dev, PCI_COMMAND, &command);
2327 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2331 * Check that the device is in the D0 power state. If it's not,
2332 * there is no point to look any further.
2335 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2336 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2340 /* Convert from PCI bus to resource space. */
2341 csr = ioremap(pci_resource_start(dev, 0), 8);
2343 pci_warn(dev, "Can't map e100 registers\n");
2347 cmd_hi = readb(csr + 3);
2349 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n");
2355 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2356 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2359 * The 82575 and 82598 may experience data corruption issues when transitioning
2360 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2362 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2364 pci_info(dev, "Disabling L0s\n");
2365 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2367 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2368 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2369 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2370 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2371 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2372 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2373 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2374 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2375 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2376 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2377 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2378 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2379 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2380 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2382 static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
2384 pci_info(dev, "Disabling ASPM L0s/L1\n");
2385 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
2389 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
2390 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
2391 * disable both L0s and L1 for now to be safe.
2393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
2396 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2397 * Link bit cleared after starting the link retrain process to allow this
2398 * process to finish.
2400 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2401 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2403 static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2405 dev->clear_retrain_link = 1;
2406 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2408 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link);
2409 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link);
2410 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link);
2412 static void fixup_rev1_53c810(struct pci_dev *dev)
2414 u32 class = dev->class;
2417 * rev 1 ncr53c810 chips don't set the class at all which means
2418 * they don't get their resources remapped. Fix that here.
2423 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2424 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2427 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2429 /* Enable 1k I/O space granularity on the Intel P64H2 */
2430 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2434 pci_read_config_word(dev, 0x40, &en1k);
2437 pci_info(dev, "Enable I/O Space to 1KB granularity\n");
2438 dev->io_window_1k = 1;
2441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2444 * Under some circumstances, AER is not linked with extended capabilities.
2445 * Force it to be linked by setting the corresponding control bit in the
2448 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2452 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2454 pci_write_config_byte(dev, 0xf41, b | 0x20);
2455 pci_info(dev, "Linking AER extended capability\n");
2459 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2460 quirk_nvidia_ck804_pcie_aer_ext_cap);
2461 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2462 quirk_nvidia_ck804_pcie_aer_ext_cap);
2464 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2467 * Disable PCI Bus Parking and PCI Master read caching on CX700
2468 * which causes unspecified timing errors with a VT6212L on the PCI
2469 * bus leading to USB2.0 packet loss.
2471 * This quirk is only enabled if a second (on the external PCI bus)
2472 * VT6212L is found -- the CX700 core itself also contains a USB
2473 * host controller with the same PCI ID as the VT6212L.
2476 /* Count VT6212L instances */
2477 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2478 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2482 * p should contain the first (internal) VT6212L -- see if we have
2483 * an external one by searching again.
2485 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2490 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2492 /* Turn off PCI Bus Parking */
2493 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2495 pci_info(dev, "Disabling VIA CX700 PCI parking\n");
2499 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2501 /* Turn off PCI Master read caching */
2502 pci_write_config_byte(dev, 0x72, 0x0);
2504 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2505 pci_write_config_byte(dev, 0x75, 0x1);
2507 /* Disable "Read FIFO Timer" */
2508 pci_write_config_byte(dev, 0x77, 0x0);
2510 pci_info(dev, "Disabling VIA CX700 PCI caching\n");
2514 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2516 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2520 pci_read_config_dword(dev, 0xf4, &rev);
2522 /* Only CAP the MRRS if the device is a 5719 A0 */
2523 if (rev == 0x05719000) {
2524 int readrq = pcie_get_readrq(dev);
2526 pcie_set_readrq(dev, 2048);
2529 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2530 PCI_DEVICE_ID_TIGON3_5719,
2531 quirk_brcm_5719_limit_mrrs);
2534 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to
2535 * hide device 6 which configures the overflow device access containing the
2536 * DRBs - this is where we expose device 6.
2537 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2539 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2543 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2544 pci_info(dev, "Enabling MCH 'Overflow' Device\n");
2545 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2548 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2549 quirk_unhide_mch_dev6);
2550 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2551 quirk_unhide_mch_dev6);
2553 #ifdef CONFIG_PCI_MSI
2555 * Some chipsets do not support MSI. We cannot easily rely on setting
2556 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some
2557 * other buses controlled by the chipset even if Linux is not aware of it.
2558 * Instead of setting the flag on all buses in the machine, simply disable
2561 static void quirk_disable_all_msi(struct pci_dev *dev)
2564 pci_warn(dev, "MSI quirk detected; MSI disabled\n");
2566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi);
2576 /* Disable MSI on chipsets that are known to not support it */
2577 static void quirk_disable_msi(struct pci_dev *dev)
2579 if (dev->subordinate) {
2580 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2581 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2584 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2585 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2586 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2589 * The APC bridge device in AMD 780 family northbridges has some random
2590 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2591 * we use the possible vendor/device IDs of the host bridge for the
2592 * declared quirk, and search for the APC bridge by slot number.
2594 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2596 struct pci_dev *apc_bridge;
2598 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2600 if (apc_bridge->device == 0x9602)
2601 quirk_disable_msi(apc_bridge);
2602 pci_dev_put(apc_bridge);
2605 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2609 * Go through the list of HyperTransport capabilities and return 1 if a HT
2610 * MSI capability is found and enabled.
2612 static int msi_ht_cap_enabled(struct pci_dev *dev)
2614 int pos, ttl = PCI_FIND_CAP_TTL;
2616 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2617 while (pos && ttl--) {
2620 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2622 pci_info(dev, "Found %s HT MSI Mapping\n",
2623 flags & HT_MSI_FLAGS_ENABLE ?
2624 "enabled" : "disabled");
2625 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2628 pos = pci_find_next_ht_capability(dev, pos,
2629 HT_CAPTYPE_MSI_MAPPING);
2634 /* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */
2635 static void quirk_msi_ht_cap(struct pci_dev *dev)
2637 if (!msi_ht_cap_enabled(dev))
2638 quirk_disable_msi(dev);
2640 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2644 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported
2645 * if the MSI capability is set in any of these mappings.
2647 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2649 struct pci_dev *pdev;
2652 * Check HT MSI cap on this chipset and the root one. A single one
2653 * having MSI is enough to be sure that MSI is supported.
2655 pdev = pci_get_slot(dev->bus, 0);
2658 if (!msi_ht_cap_enabled(pdev))
2659 quirk_msi_ht_cap(dev);
2662 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2663 quirk_nvidia_ck804_msi_ht_cap);
2665 /* Force enable MSI mapping capability on HT bridges */
2666 static void ht_enable_msi_mapping(struct pci_dev *dev)
2668 int pos, ttl = PCI_FIND_CAP_TTL;
2670 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2671 while (pos && ttl--) {
2674 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2676 pci_info(dev, "Enabling HT MSI Mapping\n");
2678 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2679 flags | HT_MSI_FLAGS_ENABLE);
2681 pos = pci_find_next_ht_capability(dev, pos,
2682 HT_CAPTYPE_MSI_MAPPING);
2685 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2686 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2687 ht_enable_msi_mapping);
2688 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2689 ht_enable_msi_mapping);
2692 * The P5N32-SLI motherboards from Asus have a problem with MSI
2693 * for the MCP55 NIC. It is not yet determined whether the MSI problem
2694 * also affects other devices. As for now, turn off MSI for this device.
2696 static void nvenet_msi_disable(struct pci_dev *dev)
2698 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2701 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2702 strstr(board_name, "P5N32-E SLI"))) {
2703 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n");
2707 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2708 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2709 nvenet_msi_disable);
2712 * PCIe spec r4.0 sec 7.7.1.2 and sec 7.7.2.2 say that if MSI/MSI-X is enabled,
2713 * then the device can't use INTx interrupts. Tegra's PCIe root ports don't
2714 * generate MSI interrupts for PME and AER events instead only INTx interrupts
2715 * are generated. Though Tegra's PCIe root ports can generate MSI interrupts
2716 * for other events, since PCIe specification doesn't support using a mix of
2717 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port
2718 * service drivers registering their respective ISRs for MSIs.
2720 static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev)
2724 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0,
2725 PCI_CLASS_BRIDGE_PCI, 8,
2726 pci_quirk_nvidia_tegra_disable_rp_msi);
2727 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1,
2728 PCI_CLASS_BRIDGE_PCI, 8,
2729 pci_quirk_nvidia_tegra_disable_rp_msi);
2730 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2,
2731 PCI_CLASS_BRIDGE_PCI, 8,
2732 pci_quirk_nvidia_tegra_disable_rp_msi);
2733 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0,
2734 PCI_CLASS_BRIDGE_PCI, 8,
2735 pci_quirk_nvidia_tegra_disable_rp_msi);
2736 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1,
2737 PCI_CLASS_BRIDGE_PCI, 8,
2738 pci_quirk_nvidia_tegra_disable_rp_msi);
2739 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c,
2740 PCI_CLASS_BRIDGE_PCI, 8,
2741 pci_quirk_nvidia_tegra_disable_rp_msi);
2742 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d,
2743 PCI_CLASS_BRIDGE_PCI, 8,
2744 pci_quirk_nvidia_tegra_disable_rp_msi);
2745 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12,
2746 PCI_CLASS_BRIDGE_PCI, 8,
2747 pci_quirk_nvidia_tegra_disable_rp_msi);
2748 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13,
2749 PCI_CLASS_BRIDGE_PCI, 8,
2750 pci_quirk_nvidia_tegra_disable_rp_msi);
2751 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae,
2752 PCI_CLASS_BRIDGE_PCI, 8,
2753 pci_quirk_nvidia_tegra_disable_rp_msi);
2754 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf,
2755 PCI_CLASS_BRIDGE_PCI, 8,
2756 pci_quirk_nvidia_tegra_disable_rp_msi);
2757 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5,
2758 PCI_CLASS_BRIDGE_PCI, 8,
2759 pci_quirk_nvidia_tegra_disable_rp_msi);
2760 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6,
2761 PCI_CLASS_BRIDGE_PCI, 8,
2762 pci_quirk_nvidia_tegra_disable_rp_msi);
2765 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2766 * config register. This register controls the routing of legacy
2767 * interrupts from devices that route through the MCP55. If this register
2768 * is misprogrammed, interrupts are only sent to the BSP, unlike
2769 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2770 * having this register set properly prevents kdump from booting up
2771 * properly, so let's make sure that we have it set correctly.
2772 * Note that this is an undocumented register.
2774 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2778 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2781 pci_read_config_dword(dev, 0x74, &cfg);
2783 if (cfg & ((1 << 2) | (1 << 15))) {
2784 pr_info("Rewriting IRQ routing register on MCP55\n");
2785 cfg &= ~((1 << 2) | (1 << 15));
2786 pci_write_config_dword(dev, 0x74, cfg);
2789 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2790 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2791 nvbridge_check_legacy_irq_routing);
2792 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2793 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2794 nvbridge_check_legacy_irq_routing);
2796 static int ht_check_msi_mapping(struct pci_dev *dev)
2798 int pos, ttl = PCI_FIND_CAP_TTL;
2801 /* Check if there is HT MSI cap or enabled on this device */
2802 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2803 while (pos && ttl--) {
2808 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2810 if (flags & HT_MSI_FLAGS_ENABLE) {
2817 pos = pci_find_next_ht_capability(dev, pos,
2818 HT_CAPTYPE_MSI_MAPPING);
2824 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2826 struct pci_dev *dev;
2831 dev_no = host_bridge->devfn >> 3;
2832 for (i = dev_no + 1; i < 0x20; i++) {
2833 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2837 /* found next host bridge? */
2838 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2844 if (ht_check_msi_mapping(dev)) {
2855 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2856 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2858 static int is_end_of_ht_chain(struct pci_dev *dev)
2864 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2869 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2871 ctrl_off = ((flags >> 10) & 1) ?
2872 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2873 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2875 if (ctrl & (1 << 6))
2882 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2884 struct pci_dev *host_bridge;
2889 dev_no = dev->devfn >> 3;
2890 for (i = dev_no; i >= 0; i--) {
2891 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2895 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2900 pci_dev_put(host_bridge);
2906 /* don't enable end_device/host_bridge with leaf directly here */
2907 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2908 host_bridge_with_leaf(host_bridge))
2911 /* root did that ! */
2912 if (msi_ht_cap_enabled(host_bridge))
2915 ht_enable_msi_mapping(dev);
2918 pci_dev_put(host_bridge);
2921 static void ht_disable_msi_mapping(struct pci_dev *dev)
2923 int pos, ttl = PCI_FIND_CAP_TTL;
2925 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2926 while (pos && ttl--) {
2929 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2931 pci_info(dev, "Disabling HT MSI Mapping\n");
2933 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2934 flags & ~HT_MSI_FLAGS_ENABLE);
2936 pos = pci_find_next_ht_capability(dev, pos,
2937 HT_CAPTYPE_MSI_MAPPING);
2941 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2943 struct pci_dev *host_bridge;
2947 if (!pci_msi_enabled())
2950 /* check if there is HT MSI cap or enabled on this device */
2951 found = ht_check_msi_mapping(dev);
2958 * HT MSI mapping should be disabled on devices that are below
2959 * a non-Hypertransport host bridge. Locate the host bridge...
2961 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
2963 if (host_bridge == NULL) {
2964 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2968 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2970 /* Host bridge is to HT */
2972 /* it is not enabled, try to enable it */
2974 ht_enable_msi_mapping(dev);
2976 nv_ht_enable_msi_mapping(dev);
2981 /* HT MSI is not enabled */
2985 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2986 ht_disable_msi_mapping(dev);
2989 pci_dev_put(host_bridge);
2992 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2994 return __nv_msi_ht_cap_quirk(dev, 1);
2996 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2997 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2999 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
3001 return __nv_msi_ht_cap_quirk(dev, 0);
3003 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3004 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3006 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
3008 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3011 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
3016 * SB700 MSI issue will be fixed at HW level from revision A21;
3017 * we need check PCI REVISION ID of SMBus controller to get SB700
3020 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
3025 if ((p->revision < 0x3B) && (p->revision >= 0x30))
3026 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3030 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
3032 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
3033 if (dev->revision < 0x18) {
3034 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n");
3035 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3038 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3039 PCI_DEVICE_ID_TIGON3_5780,
3040 quirk_msi_intx_disable_bug);
3041 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3042 PCI_DEVICE_ID_TIGON3_5780S,
3043 quirk_msi_intx_disable_bug);
3044 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3045 PCI_DEVICE_ID_TIGON3_5714,
3046 quirk_msi_intx_disable_bug);
3047 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3048 PCI_DEVICE_ID_TIGON3_5714S,
3049 quirk_msi_intx_disable_bug);
3050 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3051 PCI_DEVICE_ID_TIGON3_5715,
3052 quirk_msi_intx_disable_bug);
3053 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3054 PCI_DEVICE_ID_TIGON3_5715S,
3055 quirk_msi_intx_disable_bug);
3057 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
3058 quirk_msi_intx_disable_ati_bug);
3059 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
3060 quirk_msi_intx_disable_ati_bug);
3061 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
3062 quirk_msi_intx_disable_ati_bug);
3063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
3064 quirk_msi_intx_disable_ati_bug);
3065 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
3066 quirk_msi_intx_disable_ati_bug);
3068 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
3069 quirk_msi_intx_disable_bug);
3070 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
3071 quirk_msi_intx_disable_bug);
3072 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
3073 quirk_msi_intx_disable_bug);
3075 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
3076 quirk_msi_intx_disable_bug);
3077 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
3078 quirk_msi_intx_disable_bug);
3079 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
3080 quirk_msi_intx_disable_bug);
3081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
3082 quirk_msi_intx_disable_bug);
3083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
3084 quirk_msi_intx_disable_bug);
3085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
3086 quirk_msi_intx_disable_bug);
3087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
3088 quirk_msi_intx_disable_qca_bug);
3089 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
3090 quirk_msi_intx_disable_qca_bug);
3091 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
3092 quirk_msi_intx_disable_qca_bug);
3093 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
3094 quirk_msi_intx_disable_qca_bug);
3095 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
3096 quirk_msi_intx_disable_qca_bug);
3099 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it
3100 * should be disabled on platforms where the device (mistakenly) advertises it.
3102 * Notice that this quirk also disables MSI (which may work, but hasn't been
3103 * tested), since currently there is no standard way to disable only MSI-X.
3105 * The 0031 device id is reused for other non Root Port device types,
3106 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
3108 static void quirk_al_msi_disable(struct pci_dev *dev)
3111 pci_warn(dev, "Disabling MSI/MSI-X\n");
3113 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
3114 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable);
3115 #endif /* CONFIG_PCI_MSI */
3118 * Allow manual resource allocation for PCI hotplug bridges via
3119 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI
3120 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to
3121 * allocate resources when hotplug device is inserted and PCI bus is
3124 static void quirk_hotplug_bridge(struct pci_dev *dev)
3126 dev->is_hotplug_bridge = 1;
3128 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
3131 * This is a quirk for the Ricoh MMC controller found as a part of some
3132 * multifunction chips.
3134 * This is very similar and based on the ricoh_mmc driver written by
3135 * Philip Langdale. Thank you for these magic sequences.
3137 * These chips implement the four main memory card controllers (SD, MMC,
3138 * MS, xD) and one or both of CardBus or FireWire.
3140 * It happens that they implement SD and MMC support as separate
3141 * controllers (and PCI functions). The Linux SDHCI driver supports MMC
3142 * cards but the chip detects MMC cards in hardware and directs them to the
3143 * MMC controller - so the SDHCI driver never sees them.
3145 * To get around this, we must disable the useless MMC controller. At that
3146 * point, the SDHCI controller will start seeing them. It seems to be the
3147 * case that the relevant PCI registers to deactivate the MMC controller
3148 * live on PCI function 0, which might be the CardBus controller or the
3149 * FireWire controller, depending on the particular chip in question
3151 * This has to be done early, because as soon as we disable the MMC controller
3152 * other PCI functions shift up one level, e.g. function #2 becomes function
3153 * #1, and this will confuse the PCI core.
3155 #ifdef CONFIG_MMC_RICOH_MMC
3156 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
3163 * Disable via CardBus interface
3165 * This must be done via function #0
3167 if (PCI_FUNC(dev->devfn))
3170 pci_read_config_byte(dev, 0xB7, &disable);
3174 pci_read_config_byte(dev, 0x8E, &write_enable);
3175 pci_write_config_byte(dev, 0x8E, 0xAA);
3176 pci_read_config_byte(dev, 0x8D, &write_target);
3177 pci_write_config_byte(dev, 0x8D, 0xB7);
3178 pci_write_config_byte(dev, 0xB7, disable | 0x02);
3179 pci_write_config_byte(dev, 0x8E, write_enable);
3180 pci_write_config_byte(dev, 0x8D, write_target);
3182 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n");
3183 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3185 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3186 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3188 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
3194 * Disable via FireWire interface
3196 * This must be done via function #0
3198 if (PCI_FUNC(dev->devfn))
3201 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
3202 * certain types of SD/MMC cards. Lowering the SD base clock
3203 * frequency from 200Mhz to 50Mhz fixes this issue.
3205 * 0x150 - SD2.0 mode enable for changing base clock
3206 * frequency to 50Mhz
3207 * 0xe1 - Base clock frequency
3208 * 0x32 - 50Mhz new clock frequency
3209 * 0xf9 - Key register for 0x150
3210 * 0xfc - key register for 0xe1
3212 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
3213 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
3214 pci_write_config_byte(dev, 0xf9, 0xfc);
3215 pci_write_config_byte(dev, 0x150, 0x10);
3216 pci_write_config_byte(dev, 0xf9, 0x00);
3217 pci_write_config_byte(dev, 0xfc, 0x01);
3218 pci_write_config_byte(dev, 0xe1, 0x32);
3219 pci_write_config_byte(dev, 0xfc, 0x00);
3221 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n");
3224 pci_read_config_byte(dev, 0xCB, &disable);
3229 pci_read_config_byte(dev, 0xCA, &write_enable);
3230 pci_write_config_byte(dev, 0xCA, 0x57);
3231 pci_write_config_byte(dev, 0xCB, disable | 0x02);
3232 pci_write_config_byte(dev, 0xCA, write_enable);
3234 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n");
3235 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3238 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3239 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3240 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3241 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3242 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3243 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3244 #endif /*CONFIG_MMC_RICOH_MMC*/
3246 #ifdef CONFIG_DMAR_TABLE
3247 #define VTUNCERRMSK_REG 0x1ac
3248 #define VTD_MSK_SPEC_ERRORS (1 << 31)
3250 * This is a quirk for masking VT-d spec-defined errors to platform error
3251 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets
3252 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3253 * on the RAS config settings of the platform) when a VT-d fault happens.
3254 * The resulting SMI caused the system to hang.
3256 * VT-d spec-related errors are already handled by the VT-d OS code, so no
3257 * need to report the same error through other channels.
3259 static void vtd_mask_spec_errors(struct pci_dev *dev)
3263 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3264 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3266 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3267 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3270 static void fixup_ti816x_class(struct pci_dev *dev)
3272 u32 class = dev->class;
3274 /* TI 816x devices do not have class code set when in PCIe boot mode */
3275 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3276 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n",
3279 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3280 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3283 * Some PCIe devices do not work reliably with the claimed maximum
3284 * payload size supported.
3286 static void fixup_mpss_256(struct pci_dev *dev)
3288 dev->pcie_mpss = 1; /* 256 bytes */
3290 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3291 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3292 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3293 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3294 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3295 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3296 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256);
3299 * Intel 5000 and 5100 Memory controllers have an erratum with read completion
3300 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3301 * Since there is no way of knowing what the PCIe MPS on each fabric will be
3302 * until all of the devices are discovered and buses walked, read completion
3303 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3304 * it is possible to hotplug a device with MPS of 256B.
3306 static void quirk_intel_mc_errata(struct pci_dev *dev)
3311 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3312 pcie_bus_config == PCIE_BUS_DEFAULT)
3316 * Intel erratum specifies bits to change but does not say what
3317 * they are. Keeping them magical until such time as the registers
3318 * and values can be explained.
3320 err = pci_read_config_word(dev, 0x48, &rcc);
3322 pci_err(dev, "Error attempting to read the read completion coalescing register\n");
3326 if (!(rcc & (1 << 10)))
3331 err = pci_write_config_word(dev, 0x48, rcc);
3333 pci_err(dev, "Error attempting to write the read completion coalescing register\n");
3337 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n");
3339 /* Intel 5000 series memory controllers and ports 2-7 */
3340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3342 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3346 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3347 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3348 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3349 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3350 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3351 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3352 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3353 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3354 /* Intel 5100 series memory controllers and ports 2-7 */
3355 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3356 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3357 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3358 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3359 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3360 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3361 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3362 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3363 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3368 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.
3369 * To work around this, query the size it should be configured to by the
3370 * device and modify the resource end to correspond to this new size.
3372 static void quirk_intel_ntb(struct pci_dev *dev)
3377 rc = pci_read_config_byte(dev, 0x00D0, &val);
3381 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3383 rc = pci_read_config_byte(dev, 0x00D1, &val);
3387 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3389 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3390 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3393 * Some BIOS implementations leave the Intel GPU interrupts enabled, even
3394 * though no one is handling them (e.g., if the i915 driver is never
3395 * loaded). Additionally the interrupt destination is not set up properly
3396 * and the interrupt ends up -somewhere-.
3398 * These spurious interrupts are "sticky" and the kernel disables the
3399 * (shared) interrupt line after 100,000+ generated interrupts.
3401 * Fix it by disabling the still enabled interrupts. This resolves crashes
3402 * often seen on monitor unplug.
3404 #define I915_DEIER_REG 0x4400c
3405 static void disable_igfx_irq(struct pci_dev *dev)
3407 void __iomem *regs = pci_iomap(dev, 0, 0);
3409 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n");
3413 /* Check if any interrupt line is still enabled */
3414 if (readl(regs + I915_DEIER_REG) != 0) {
3415 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3417 writel(0, regs + I915_DEIER_REG);
3420 pci_iounmap(dev, regs);
3422 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3423 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3424 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3425 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3426 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3427 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3431 * PCI devices which are on Intel chips can skip the 10ms delay
3432 * before entering D3 mode.
3434 static void quirk_remove_d3hot_delay(struct pci_dev *dev)
3436 dev->d3hot_delay = 0;
3438 /* C600 Series devices do not need 10ms d3hot_delay */
3439 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay);
3440 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay);
3441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay);
3442 /* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */
3443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay);
3444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay);
3445 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay);
3446 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay);
3447 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay);
3448 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay);
3449 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay);
3450 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay);
3451 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay);
3452 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay);
3453 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay);
3454 /* Intel Cherrytrail devices do not need 10ms d3hot_delay */
3455 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay);
3456 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay);
3457 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay);
3458 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay);
3459 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay);
3460 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay);
3461 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay);
3462 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay);
3463 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay);
3466 * Some devices may pass our check in pci_intx_mask_supported() if
3467 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3468 * support this feature.
3470 static void quirk_broken_intx_masking(struct pci_dev *dev)
3472 dev->broken_intx_masking = 1;
3474 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3475 quirk_broken_intx_masking);
3476 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3477 quirk_broken_intx_masking);
3478 DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */
3479 quirk_broken_intx_masking);
3482 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3483 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3485 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3487 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3488 quirk_broken_intx_masking);
3491 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3492 * DisINTx can be set but the interrupt status bit is non-functional.
3494 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking);
3495 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking);
3496 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking);
3497 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking);
3498 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking);
3499 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking);
3500 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking);
3501 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking);
3502 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking);
3503 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking);
3504 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking);
3505 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking);
3506 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking);
3507 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking);
3508 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking);
3509 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking);
3511 static u16 mellanox_broken_intx_devs[] = {
3512 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3513 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3514 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3515 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3516 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3517 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3518 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3519 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3520 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3521 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3522 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3523 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3524 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3525 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3528 #define CONNECTX_4_CURR_MAX_MINOR 99
3529 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3532 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3533 * If so, don't mark it as broken.
3534 * FW minor > 99 means older FW version format and no INTx masking support.
3535 * FW minor < 14 means new FW version format and no INTx masking support.
3537 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3539 __be32 __iomem *fw_ver;
3547 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3548 if (pdev->device == mellanox_broken_intx_devs[i]) {
3549 pdev->broken_intx_masking = 1;
3555 * Getting here means Connect-IB cards and up. Connect-IB has no INTx
3556 * support so shouldn't be checked further
3558 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3561 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3562 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3565 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3566 if (pci_enable_device_mem(pdev)) {
3567 pci_warn(pdev, "Can't enable device memory\n");
3571 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3573 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n");
3577 /* Reading from resource space should be 32b aligned */
3578 fw_maj_min = ioread32be(fw_ver);
3579 fw_sub_min = ioread32be(fw_ver + 1);
3580 fw_major = fw_maj_min & 0xffff;
3581 fw_minor = fw_maj_min >> 16;
3582 fw_subminor = fw_sub_min & 0xffff;
3583 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3584 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3585 pci_warn(pdev, "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",
3586 fw_major, fw_minor, fw_subminor, pdev->device ==
3587 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3588 pdev->broken_intx_masking = 1;
3594 pci_disable_device(pdev);
3596 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3597 mellanox_check_broken_intx_masking);
3599 static void quirk_no_bus_reset(struct pci_dev *dev)
3601 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3605 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
3606 * prevented for those affected devices.
3608 static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
3610 if ((dev->device & 0xffc0) == 0x2340)
3611 quirk_no_bus_reset(dev);
3613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
3614 quirk_nvidia_no_bus_reset);
3617 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3618 * The device will throw a Link Down error on AER-capable systems and
3619 * regardless of AER, config space of the device is never accessible again
3620 * and typically causes the system to hang or reset when access is attempted.
3621 * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/
3623 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3624 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3625 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3626 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3627 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3628 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset);
3631 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3632 * reset when used with certain child devices. After the reset, config
3633 * accesses to the child may fail.
3635 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
3638 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
3639 * automatically disables LTSSM when Secondary Bus Reset is received and
3640 * the device stops working. Prevent bus reset for these devices. With
3641 * this change, the device can be assigned to VMs with VFIO, but it will
3642 * leak state between VMs. Reference
3643 * https://e2e.ti.com/support/processors/f/791/t/954382
3645 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
3647 static void quirk_no_pm_reset(struct pci_dev *dev)
3650 * We can't do a bus reset on root bus devices, but an ineffective
3651 * PM reset may be better than nothing.
3653 if (!pci_is_root_bus(dev->bus))
3654 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3658 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3659 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3660 * to have no effect on the device: it retains the framebuffer contents and
3661 * monitor sync. Advertising this support makes other layers, like VFIO,
3662 * assume pci_reset_function() is viable for this device. Mark it as
3663 * unavailable to skip it when testing reset methods.
3665 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3666 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3669 * Thunderbolt controllers with broken MSI hotplug signaling:
3670 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3671 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3673 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3675 if (pdev->is_hotplug_bridge &&
3676 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3677 pdev->revision <= 1))
3680 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3681 quirk_thunderbolt_hotplug_msi);
3682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3683 quirk_thunderbolt_hotplug_msi);
3684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3685 quirk_thunderbolt_hotplug_msi);
3686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3687 quirk_thunderbolt_hotplug_msi);
3688 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3689 quirk_thunderbolt_hotplug_msi);
3693 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3695 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3696 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3697 * be present after resume if a device was plugged in before suspend.
3699 * The Thunderbolt controller consists of a PCIe switch with downstream
3700 * bridges leading to the NHI and to the tunnel PCI bridges.
3702 * This quirk cuts power to the whole chip. Therefore we have to apply it
3703 * during suspend_noirq of the upstream bridge.
3705 * Power is automagically restored before resume. No action is needed.
3707 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3709 acpi_handle bridge, SXIO, SXFP, SXLV;
3711 if (!x86_apple_machine)
3713 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3717 * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller.
3718 * We don't know how to turn it back on again, but firmware does,
3719 * so we can only use SXIO/SXFP/SXLF if we're suspending via
3722 if (!pm_suspend_via_firmware())
3725 bridge = ACPI_HANDLE(&dev->dev);
3730 * SXIO and SXLV are present only on machines requiring this quirk.
3731 * Thunderbolt bridges in external devices might have the same
3732 * device ID as those on the host, but they will not have the
3733 * associated ACPI methods. This implicitly checks that we are at
3736 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3737 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3738 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3740 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n");
3742 /* magic sequence */
3743 acpi_execute_simple_method(SXIO, NULL, 1);
3744 acpi_execute_simple_method(SXFP, NULL, 0);
3746 acpi_execute_simple_method(SXLV, NULL, 0);
3747 acpi_execute_simple_method(SXIO, NULL, 0);
3748 acpi_execute_simple_method(SXLV, NULL, 0);
3750 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3751 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3752 quirk_apple_poweroff_thunderbolt);
3756 * Following are device-specific reset methods which can be used to
3757 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3760 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, bool probe)
3763 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3765 * The 82599 supports FLR on VFs, but FLR support is reported only
3766 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3767 * Thus we must call pcie_flr() directly without first checking if it is
3775 #define SOUTH_CHICKEN2 0xc2004
3776 #define PCH_PP_STATUS 0xc7200
3777 #define PCH_PP_CONTROL 0xc7204
3778 #define MSG_CTL 0x45010
3779 #define NSDE_PWR_STATE 0xd0100
3780 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3782 static int reset_ivb_igd(struct pci_dev *dev, bool probe)
3784 void __iomem *mmio_base;
3785 unsigned long timeout;
3791 mmio_base = pci_iomap(dev, 0, 0);
3795 iowrite32(0x00000002, mmio_base + MSG_CTL);
3798 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3799 * driver loaded sets the right bits. However, this's a reset and
3800 * the bits have been set by i915 previously, so we clobber
3801 * SOUTH_CHICKEN2 register directly here.
3803 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3805 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3806 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3808 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3810 val = ioread32(mmio_base + PCH_PP_STATUS);
3811 if ((val & 0xb0000000) == 0)
3812 goto reset_complete;
3814 } while (time_before(jiffies, timeout));
3815 pci_warn(dev, "timeout during reset\n");
3818 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3820 pci_iounmap(dev, mmio_base);
3824 /* Device-specific reset method for Chelsio T4-based adapters */
3825 static int reset_chelsio_generic_dev(struct pci_dev *dev, bool probe)
3831 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3832 * that we have no device-specific reset method.
3834 if ((dev->device & 0xf000) != 0x4000)
3838 * If this is the "probe" phase, return 0 indicating that we can
3839 * reset this device.
3845 * T4 can wedge if there are DMAs in flight within the chip and Bus
3846 * Master has been disabled. We need to have it on till the Function
3847 * Level Reset completes. (BUS_MASTER is disabled in
3848 * pci_reset_function()).
3850 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3851 pci_write_config_word(dev, PCI_COMMAND,
3852 old_command | PCI_COMMAND_MASTER);
3855 * Perform the actual device function reset, saving and restoring
3856 * configuration information around the reset.
3858 pci_save_state(dev);
3861 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3862 * are disabled when an MSI-X interrupt message needs to be delivered.
3863 * So we briefly re-enable MSI-X interrupts for the duration of the
3864 * FLR. The pci_restore_state() below will restore the original
3867 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3868 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3869 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3871 PCI_MSIX_FLAGS_ENABLE |
3872 PCI_MSIX_FLAGS_MASKALL);
3877 * Restore the configuration information (BAR values, etc.) including
3878 * the original PCI Configuration Space Command word, and return
3881 pci_restore_state(dev);
3882 pci_write_config_word(dev, PCI_COMMAND, old_command);
3886 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3887 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3888 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3891 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after
3892 * FLR where config space reads from the device return -1. We seem to be
3893 * able to avoid this condition if we disable the NVMe controller prior to
3894 * FLR. This quirk is generic for any NVMe class device requiring similar
3895 * assistance to quiesce the device prior to FLR.
3897 * NVMe specification: https://nvmexpress.org/resources/specifications/
3899 * Chapter 2: Required and optional PCI config registers
3900 * Chapter 3: NVMe control registers
3901 * Chapter 7.3: Reset behavior
3903 static int nvme_disable_and_flr(struct pci_dev *dev, bool probe)
3909 if (dev->class != PCI_CLASS_STORAGE_EXPRESS ||
3910 pcie_reset_flr(dev, PCI_RESET_PROBE) || !pci_resource_start(dev, 0))
3916 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg));
3920 pci_read_config_word(dev, PCI_COMMAND, &cmd);
3921 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY);
3923 cfg = readl(bar + NVME_REG_CC);
3925 /* Disable controller if enabled */
3926 if (cfg & NVME_CC_ENABLE) {
3927 u32 cap = readl(bar + NVME_REG_CAP);
3928 unsigned long timeout;
3931 * Per nvme_disable_ctrl() skip shutdown notification as it
3932 * could complete commands to the admin queue. We only intend
3933 * to quiesce the device before reset.
3935 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE);
3937 writel(cfg, bar + NVME_REG_CC);
3940 * Some controllers require an additional delay here, see
3941 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet
3942 * supported by this quirk.
3945 /* Cap register provides max timeout in 500ms increments */
3946 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
3949 u32 status = readl(bar + NVME_REG_CSTS);
3951 /* Ready status becomes zero on disable complete */
3952 if (!(status & NVME_CSTS_RDY))
3957 if (time_after(jiffies, timeout)) {
3958 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n");
3964 pci_iounmap(dev, bar);
3972 * Intel DC P3700 NVMe controller will timeout waiting for ready status
3973 * to change after NVMe enable if the driver starts interacting with the
3974 * device too soon after FLR. A 250ms delay after FLR has heuristically
3975 * proven to produce reliably working results for device assignment cases.
3977 static int delay_250ms_after_flr(struct pci_dev *dev, bool probe)
3980 return pcie_reset_flr(dev, PCI_RESET_PROBE);
3982 pcie_reset_flr(dev, PCI_RESET_DO_RESET);
3989 #define PCI_DEVICE_ID_HINIC_VF 0x375E
3990 #define HINIC_VF_FLR_TYPE 0x1000
3991 #define HINIC_VF_FLR_CAP_BIT (1UL << 30)
3992 #define HINIC_VF_OP 0xE80
3993 #define HINIC_VF_FLR_PROC_BIT (1UL << 18)
3994 #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */
3996 /* Device-specific reset method for Huawei Intelligent NIC virtual functions */
3997 static int reset_hinic_vf_dev(struct pci_dev *pdev, bool probe)
3999 unsigned long timeout;
4006 bar = pci_iomap(pdev, 0, 0);
4010 /* Get and check firmware capabilities */
4011 val = ioread32be(bar + HINIC_VF_FLR_TYPE);
4012 if (!(val & HINIC_VF_FLR_CAP_BIT)) {
4013 pci_iounmap(pdev, bar);
4017 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */
4018 val = ioread32be(bar + HINIC_VF_OP);
4019 val = val | HINIC_VF_FLR_PROC_BIT;
4020 iowrite32be(val, bar + HINIC_VF_OP);
4025 * The device must recapture its Bus and Device Numbers after FLR
4026 * in order generate Completions. Issue a config write to let the
4027 * device capture this information.
4029 pci_write_config_word(pdev, PCI_VENDOR_ID, 0);
4031 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */
4032 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT);
4034 val = ioread32be(bar + HINIC_VF_OP);
4035 if (!(val & HINIC_VF_FLR_PROC_BIT))
4036 goto reset_complete;
4038 } while (time_before(jiffies, timeout));
4040 val = ioread32be(bar + HINIC_VF_OP);
4041 if (!(val & HINIC_VF_FLR_PROC_BIT))
4042 goto reset_complete;
4044 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val);
4047 pci_iounmap(pdev, bar);
4052 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
4053 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
4054 reset_intel_82599_sfp_virtfn },
4055 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
4057 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
4059 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr },
4060 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr },
4061 { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr },
4062 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4063 reset_chelsio_generic_dev },
4064 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF,
4065 reset_hinic_vf_dev },
4070 * These device-specific reset methods are here rather than in a driver
4071 * because when a host assigns a device to a guest VM, the host may need
4072 * to reset the device but probably doesn't have a driver for it.
4074 int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
4076 const struct pci_dev_reset_methods *i;
4078 for (i = pci_dev_reset_methods; i->reset; i++) {
4079 if ((i->vendor == dev->vendor ||
4080 i->vendor == (u16)PCI_ANY_ID) &&
4081 (i->device == dev->device ||
4082 i->device == (u16)PCI_ANY_ID))
4083 return i->reset(dev, probe);
4089 static void quirk_dma_func0_alias(struct pci_dev *dev)
4091 if (PCI_FUNC(dev->devfn) != 0)
4092 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1);
4096 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
4098 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
4100 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
4101 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
4103 static void quirk_dma_func1_alias(struct pci_dev *dev)
4105 if (PCI_FUNC(dev->devfn) != 1)
4106 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1);
4110 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
4111 * SKUs function 1 is present and is a legacy IDE controller, in other
4112 * SKUs this function is not present, making this a ghost requester.
4113 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
4115 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
4116 quirk_dma_func1_alias);
4117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
4118 quirk_dma_func1_alias);
4119 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
4120 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
4121 quirk_dma_func1_alias);
4122 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
4123 quirk_dma_func1_alias);
4124 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
4125 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
4126 quirk_dma_func1_alias);
4127 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
4128 quirk_dma_func1_alias);
4129 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
4130 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
4131 quirk_dma_func1_alias);
4132 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
4133 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
4134 quirk_dma_func1_alias);
4135 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
4136 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
4137 quirk_dma_func1_alias);
4138 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */
4139 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183,
4140 quirk_dma_func1_alias);
4141 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
4142 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
4143 quirk_dma_func1_alias);
4144 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */
4145 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215,
4146 quirk_dma_func1_alias);
4147 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
4148 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
4149 quirk_dma_func1_alias);
4150 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
4151 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
4152 quirk_dma_func1_alias);
4153 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
4154 quirk_dma_func1_alias);
4155 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
4156 quirk_dma_func1_alias);
4157 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
4158 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
4159 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
4160 quirk_dma_func1_alias);
4161 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
4162 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4163 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4164 quirk_dma_func1_alias);
4167 * Some devices DMA with the wrong devfn, not just the wrong function.
4168 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4169 * the alias is "fixed" and independent of the device devfn.
4171 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4172 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4173 * single device on the secondary bus. In reality, the single exposed
4174 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4175 * that provides a bridge to the internal bus of the I/O processor. The
4176 * controller supports private devices, which can be hidden from PCI config
4177 * space. In the case of the Adaptec 3405, a private device at 01.0
4178 * appears to be the DMA engine, which therefore needs to become a DMA
4179 * alias for the device.
4181 static const struct pci_device_id fixed_dma_alias_tbl[] = {
4182 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4183 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4184 .driver_data = PCI_DEVFN(1, 0) },
4185 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4186 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4187 .driver_data = PCI_DEVFN(1, 0) },
4191 static void quirk_fixed_dma_alias(struct pci_dev *dev)
4193 const struct pci_device_id *id;
4195 id = pci_match_id(fixed_dma_alias_tbl, dev);
4197 pci_add_dma_alias(dev, id->driver_data, 1);
4199 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4202 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4203 * using the wrong DMA alias for the device. Some of these devices can be
4204 * used as either forward or reverse bridges, so we need to test whether the
4205 * device is operating in the correct mode. We could probably apply this
4206 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4207 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4208 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4210 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4212 if (!pci_is_root_bus(pdev->bus) &&
4213 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4214 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4215 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4216 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4218 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4219 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4220 quirk_use_pcie_bridge_dma_alias);
4221 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4222 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4223 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4224 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4225 /* ITE 8893 has the same problem as the 8892 */
4226 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4227 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4228 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4231 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4232 * be added as aliases to the DMA device in order to allow buffer access
4233 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4234 * programmed in the EEPROM.
4236 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4238 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1);
4239 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1);
4240 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1);
4242 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4243 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4246 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
4247 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
4249 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
4250 * when IOMMU is enabled. These aliases allow computational unit access to
4251 * host memory. These aliases mark the whole VCA device as one IOMMU
4254 * All possible slot numbers (0x20) are used, since we are unable to tell
4255 * what slot is used on other side. This quirk is intended for both host
4256 * and computational unit sides. The VCA devices have up to five functions
4257 * (four for DMA channels and one additional).
4259 static void quirk_pex_vca_alias(struct pci_dev *pdev)
4261 const unsigned int num_pci_slots = 0x20;
4264 for (slot = 0; slot < num_pci_slots; slot++)
4265 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5);
4267 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
4268 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
4269 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
4270 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
4271 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
4272 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
4275 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4276 * associated not at the root bus, but at a bridge below. This quirk avoids
4277 * generating invalid DMA aliases.
4279 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4281 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4283 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4284 quirk_bridge_cavm_thrx2_pcie_root);
4285 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4286 quirk_bridge_cavm_thrx2_pcie_root);
4289 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4290 * class code. Fix it.
4292 static void quirk_tw686x_class(struct pci_dev *pdev)
4294 u32 class = pdev->class;
4296 /* Use "Multimedia controller" class */
4297 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4298 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4299 class, pdev->class);
4301 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4302 quirk_tw686x_class);
4303 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4304 quirk_tw686x_class);
4305 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4306 quirk_tw686x_class);
4307 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4308 quirk_tw686x_class);
4311 * Some devices have problems with Transaction Layer Packets with the Relaxed
4312 * Ordering Attribute set. Such devices should mark themselves and other
4313 * device drivers should check before sending TLPs with RO set.
4315 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4317 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4318 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4322 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4323 * Complex have a Flow Control Credit issue which can cause performance
4324 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4326 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4327 quirk_relaxedordering_disable);
4328 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4329 quirk_relaxedordering_disable);
4330 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4331 quirk_relaxedordering_disable);
4332 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4333 quirk_relaxedordering_disable);
4334 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4335 quirk_relaxedordering_disable);
4336 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4337 quirk_relaxedordering_disable);
4338 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4339 quirk_relaxedordering_disable);
4340 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4341 quirk_relaxedordering_disable);
4342 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4343 quirk_relaxedordering_disable);
4344 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4345 quirk_relaxedordering_disable);
4346 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4347 quirk_relaxedordering_disable);
4348 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4349 quirk_relaxedordering_disable);
4350 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4351 quirk_relaxedordering_disable);
4352 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4353 quirk_relaxedordering_disable);
4354 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4355 quirk_relaxedordering_disable);
4356 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4357 quirk_relaxedordering_disable);
4358 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4359 quirk_relaxedordering_disable);
4360 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4361 quirk_relaxedordering_disable);
4362 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4363 quirk_relaxedordering_disable);
4364 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4365 quirk_relaxedordering_disable);
4366 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4367 quirk_relaxedordering_disable);
4368 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4369 quirk_relaxedordering_disable);
4370 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4371 quirk_relaxedordering_disable);
4372 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4373 quirk_relaxedordering_disable);
4374 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4375 quirk_relaxedordering_disable);
4376 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4377 quirk_relaxedordering_disable);
4378 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4379 quirk_relaxedordering_disable);
4380 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4381 quirk_relaxedordering_disable);
4384 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex
4385 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4386 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4387 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4388 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4389 * November 10, 2010). As a result, on this platform we can't use Relaxed
4390 * Ordering for Upstream TLPs.
4392 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4393 quirk_relaxedordering_disable);
4394 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4395 quirk_relaxedordering_disable);
4396 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4397 quirk_relaxedordering_disable);
4400 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4401 * values for the Attribute as were supplied in the header of the
4402 * corresponding Request, except as explicitly allowed when IDO is used."
4404 * If a non-compliant device generates a completion with a different
4405 * attribute than the request, the receiver may accept it (which itself
4406 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4407 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4408 * device access timeout.
4410 * If the non-compliant device generates completions with zero attributes
4411 * (instead of copying the attributes from the request), we can work around
4412 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4413 * upstream devices so they always generate requests with zero attributes.
4415 * This affects other devices under the same Root Port, but since these
4416 * attributes are performance hints, there should be no functional problem.
4418 * Note that Configuration Space accesses are never supposed to have TLP
4419 * Attributes, so we're safe waiting till after any Configuration Space
4420 * accesses to do the Root Port fixup.
4422 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4424 struct pci_dev *root_port = pcie_find_root_port(pdev);
4427 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n");
4431 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4432 dev_name(&pdev->dev));
4433 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4434 PCI_EXP_DEVCTL_RELAX_EN |
4435 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4439 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4440 * Completion it generates.
4442 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4445 * This mask/compare operation selects for Physical Function 4 on a
4446 * T5. We only need to fix up the Root Port once for any of the
4447 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4448 * 0x54xx so we use that one.
4450 if ((pdev->device & 0xff00) == 0x5400)
4451 quirk_disable_root_port_attributes(pdev);
4453 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4454 quirk_chelsio_T5_disable_root_port_attributes);
4457 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided
4459 * @acs_ctrl_req: Bitmask of desired ACS controls
4460 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by
4461 * the hardware design
4463 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included
4464 * in @acs_ctrl_ena, i.e., the device provides all the access controls the
4465 * caller desires. Return 0 otherwise.
4467 static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena)
4469 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req)
4475 * AMD has indicated that the devices below do not support peer-to-peer
4476 * in any system where they are found in the southbridge with an AMD
4477 * IOMMU in the system. Multifunction devices that do not support
4478 * peer-to-peer between functions can claim to support a subset of ACS.
4479 * Such devices effectively enable request redirect (RR) and completion
4480 * redirect (CR) since all transactions are redirected to the upstream
4483 * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/
4484 * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/
4485 * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/
4487 * 1002:4385 SBx00 SMBus Controller
4488 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4489 * 1002:4383 SBx00 Azalia (Intel HDA)
4490 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4491 * 1002:4384 SBx00 PCI to PCI Bridge
4492 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4494 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4496 * 1022:780f [AMD] FCH PCI Bridge
4497 * 1022:7809 [AMD] FCH USB OHCI Controller
4499 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4502 struct acpi_table_header *header = NULL;
4505 /* Targeting multifunction devices on the SB (appears on root bus) */
4506 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4509 /* The IVRS table describes the AMD IOMMU */
4510 status = acpi_get_table("IVRS", 0, &header);
4511 if (ACPI_FAILURE(status))
4514 acpi_put_table(header);
4516 /* Filter out flags not applicable to multifunction */
4517 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4519 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR);
4525 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4527 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4530 switch (dev->device) {
4532 * Effectively selects all downstream ports for whole ThunderX1
4533 * (which represents 8 SoCs).
4535 case 0xa000 ... 0xa7ff: /* ThunderX1 */
4536 case 0xaf84: /* ThunderX2 */
4537 case 0xb884: /* ThunderX3 */
4544 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4546 if (!pci_quirk_cavium_acs_match(dev))
4550 * Cavium Root Ports don't advertise an ACS capability. However,
4551 * the RTL internally implements similar protection as if ACS had
4552 * Source Validation, Request Redirection, Completion Redirection,
4553 * and Upstream Forwarding features enabled. Assert that the
4554 * hardware implements and enables equivalent ACS functionality for
4557 return pci_acs_ctrl_enabled(acs_flags,
4558 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4561 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4564 * X-Gene Root Ports matching this quirk do not allow peer-to-peer
4565 * transactions with others, allowing masking out these bits as if they
4566 * were unimplemented in the ACS capability.
4568 return pci_acs_ctrl_enabled(acs_flags,
4569 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4573 * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability.
4574 * But the implementation could block peer-to-peer transactions between them
4575 * and provide ACS-like functionality.
4577 static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags)
4579 if (!pci_is_pcie(dev) ||
4580 ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) &&
4581 (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)))
4584 switch (dev->device) {
4585 case 0x0710 ... 0x071e:
4587 case 0x0723 ... 0x0732:
4588 return pci_acs_ctrl_enabled(acs_flags,
4589 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4596 * Many Intel PCH Root Ports do provide ACS-like features to disable peer
4597 * transactions and validate bus numbers in requests, but do not provide an
4598 * actual PCIe ACS capability. This is the list of device IDs known to fall
4599 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4601 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4603 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4604 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4605 /* Cougarpoint PCH */
4606 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4607 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4608 /* Pantherpoint PCH */
4609 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4610 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4611 /* Lynxpoint-H PCH */
4612 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4613 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4614 /* Lynxpoint-LP PCH */
4615 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4616 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4618 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4619 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4620 /* Patsburg (X79) PCH */
4621 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4622 /* Wellsburg (X99) PCH */
4623 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4624 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4625 /* Lynx Point (9 series) PCH */
4626 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4629 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4633 /* Filter out a few obvious non-matches first */
4634 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4637 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4638 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4644 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4646 if (!pci_quirk_intel_pch_acs_match(dev))
4649 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK)
4650 return pci_acs_ctrl_enabled(acs_flags,
4651 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4653 return pci_acs_ctrl_enabled(acs_flags, 0);
4657 * These QCOM Root Ports do provide ACS-like features to disable peer
4658 * transactions and validate bus numbers in requests, but do not provide an
4659 * actual PCIe ACS capability. Hardware supports source validation but it
4660 * will report the issue as Completer Abort instead of ACS Violation.
4661 * Hardware doesn't support peer-to-peer and each Root Port is a Root
4662 * Complex with unique segment numbers. It is not possible for one Root
4663 * Port to pass traffic to another Root Port. All PCIe transactions are
4664 * terminated inside the Root Port.
4666 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4668 return pci_acs_ctrl_enabled(acs_flags,
4669 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4673 * Each of these NXP Root Ports is in a Root Complex with a unique segment
4674 * number and does provide isolation features to disable peer transactions
4675 * and validate bus numbers in requests, but does not provide an ACS
4678 static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags)
4680 return pci_acs_ctrl_enabled(acs_flags,
4681 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4684 static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags)
4686 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4690 * Amazon's Annapurna Labs root ports don't include an ACS capability,
4691 * but do include ACS-like functionality. The hardware doesn't support
4692 * peer-to-peer transactions via the root port and each has a unique
4695 * Additionally, the root ports cannot send traffic to each other.
4697 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4699 return acs_flags ? 0 : 1;
4703 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4704 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4705 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4706 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4707 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4708 * control register is at offset 8 instead of 6 and we should probably use
4709 * dword accesses to them. This applies to the following PCI Device IDs, as
4710 * found in volume 1 of the datasheet[2]:
4712 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4713 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4715 * N.B. This doesn't fix what lspci shows.
4717 * The 100 series chipset specification update includes this as errata #23[3].
4719 * The 200 series chipset (Union Point) has the same bug according to the
4720 * specification update (Intel 200 Series Chipset Family Platform Controller
4721 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4722 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4725 * 0xa290-0xa29f PCI Express Root port #{0-16}
4726 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4728 * Mobile chipsets are also affected, 7th & 8th Generation
4729 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4730 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4731 * Processor Family I/O for U Quad Core Platforms Specification Update,
4732 * August 2017, Revision 002, Document#: 334660-002)[6]
4733 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4734 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4735 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4737 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4739 * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4740 * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4741 * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4742 * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4743 * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4744 * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html
4745 * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html
4747 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4749 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4752 switch (dev->device) {
4753 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4754 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4755 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4762 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4764 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4769 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4776 /* see pci_acs_flags_enabled() */
4777 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4778 acs_flags &= (cap | PCI_ACS_EC);
4780 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4782 return pci_acs_ctrl_enabled(acs_flags, ctrl);
4785 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4788 * SV, TB, and UF are not relevant to multifunction endpoints.
4790 * Multifunction devices are only required to implement RR, CR, and DT
4791 * in their ACS capability if they support peer-to-peer transactions.
4792 * Devices matching this quirk have been verified by the vendor to not
4793 * perform peer-to-peer with other functions, allowing us to mask out
4794 * these bits as if they were unimplemented in the ACS capability.
4796 return pci_acs_ctrl_enabled(acs_flags,
4797 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4798 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4801 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags)
4804 * Intel RCiEP's are required to allow p2p only on translated
4805 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16,
4806 * "Root-Complex Peer to Peer Considerations".
4808 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END)
4811 return pci_acs_ctrl_enabled(acs_flags,
4812 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4815 static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4818 * iProc PAXB Root Ports don't advertise an ACS capability, but
4819 * they do not allow peer-to-peer transactions between Root Ports.
4820 * Allow each Root Port to be in a separate IOMMU group by masking
4823 return pci_acs_ctrl_enabled(acs_flags,
4824 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4827 static const struct pci_dev_acs_enabled {
4830 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4831 } pci_dev_acs_enabled[] = {
4832 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4833 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4834 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4835 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4836 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4837 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4838 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4839 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4840 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4841 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4842 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4843 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4844 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4845 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4846 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4847 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4848 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4849 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4850 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4851 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4852 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4853 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4854 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4855 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4856 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4857 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4858 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4859 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4860 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4861 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4862 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4864 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4865 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4866 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4867 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4868 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4869 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4870 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4872 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4873 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4874 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4875 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4876 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4877 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4878 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4879 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4881 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4882 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4883 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4885 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4886 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4887 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4888 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4889 /* 82571 (Quads omitted due to non-ACS switch) */
4890 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4891 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4892 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4893 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4895 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4896 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4897 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs },
4898 /* QCOM QDF2xxx root ports */
4899 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
4900 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
4901 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
4902 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
4903 /* Intel PCH root ports */
4904 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4905 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4906 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4907 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4908 /* Cavium ThunderX */
4909 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4910 /* Cavium multi-function devices */
4911 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },
4912 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },
4913 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },
4915 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4916 /* Ampere Computing */
4917 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
4918 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
4919 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
4920 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
4921 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
4922 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
4923 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
4924 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
4925 /* Broadcom multi-function device */
4926 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
4927 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
4928 /* Amazon Annapurna Labs */
4929 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
4930 /* Zhaoxin multi-function devices */
4931 { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
4932 { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
4933 { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
4934 /* NXP root ports, xx=16, 12, or 08 cores */
4935 /* LX2xx0A : without security features + CAN-FD */
4936 { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs },
4937 { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs },
4938 { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs },
4939 /* LX2xx0C : security features + CAN-FD */
4940 { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs },
4941 { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs },
4942 { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs },
4943 /* LX2xx0E : security features + CAN */
4944 { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs },
4945 { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs },
4946 { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs },
4947 /* LX2xx0N : without security features + CAN */
4948 { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs },
4949 { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs },
4950 { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs },
4951 /* LX2xx2A : without security features + CAN-FD */
4952 { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs },
4953 { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs },
4954 { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs },
4955 /* LX2xx2C : security features + CAN-FD */
4956 { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs },
4957 { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs },
4958 { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs },
4959 /* LX2xx2E : security features + CAN */
4960 { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs },
4961 { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs },
4962 { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs },
4963 /* LX2xx2N : without security features + CAN */
4964 { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs },
4965 { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs },
4966 { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs },
4967 /* Zhaoxin Root/Downstream Ports */
4968 { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
4973 * pci_dev_specific_acs_enabled - check whether device provides ACS controls
4975 * @acs_flags: Bitmask of desired ACS controls
4978 * -ENOTTY: No quirk applies to this device; we can't tell whether the
4979 * device provides the desired controls
4980 * 0: Device does not provide all the desired controls
4981 * >0: Device provides all the controls in @acs_flags
4983 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4985 const struct pci_dev_acs_enabled *i;
4989 * Allow devices that do not expose standard PCIe ACS capabilities
4990 * or control to indicate their support here. Multi-function express
4991 * devices which do not allow internal peer-to-peer between functions,
4992 * but do not implement PCIe ACS may wish to return true here.
4994 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4995 if ((i->vendor == dev->vendor ||
4996 i->vendor == (u16)PCI_ANY_ID) &&
4997 (i->device == dev->device ||
4998 i->device == (u16)PCI_ANY_ID)) {
4999 ret = i->acs_enabled(dev, acs_flags);
5008 /* Config space offset of Root Complex Base Address register */
5009 #define INTEL_LPC_RCBA_REG 0xf0
5010 /* 31:14 RCBA address */
5011 #define INTEL_LPC_RCBA_MASK 0xffffc000
5013 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
5015 /* Backbone Scratch Pad Register */
5016 #define INTEL_BSPR_REG 0x1104
5017 /* Backbone Peer Non-Posted Disable */
5018 #define INTEL_BSPR_REG_BPNPD (1 << 8)
5019 /* Backbone Peer Posted Disable */
5020 #define INTEL_BSPR_REG_BPPD (1 << 9)
5022 /* Upstream Peer Decode Configuration Register */
5023 #define INTEL_UPDCR_REG 0x1014
5024 /* 5:0 Peer Decode Enable bits */
5025 #define INTEL_UPDCR_REG_MASK 0x3f
5027 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
5029 u32 rcba, bspr, updcr;
5030 void __iomem *rcba_mem;
5033 * Read the RCBA register from the LPC (D31:F0). PCH root ports
5034 * are D28:F* and therefore get probed before LPC, thus we can't
5035 * use pci_get_slot()/pci_read_config_dword() here.
5037 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
5038 INTEL_LPC_RCBA_REG, &rcba);
5039 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
5042 rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK,
5043 PAGE_ALIGN(INTEL_UPDCR_REG));
5048 * The BSPR can disallow peer cycles, but it's set by soft strap and
5049 * therefore read-only. If both posted and non-posted peer cycles are
5050 * disallowed, we're ok. If either are allowed, then we need to use
5051 * the UPDCR to disable peer decodes for each port. This provides the
5052 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5054 bspr = readl(rcba_mem + INTEL_BSPR_REG);
5055 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
5056 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
5057 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
5058 if (updcr & INTEL_UPDCR_REG_MASK) {
5059 pci_info(dev, "Disabling UPDCR peer decodes\n");
5060 updcr &= ~INTEL_UPDCR_REG_MASK;
5061 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
5069 /* Miscellaneous Port Configuration register */
5070 #define INTEL_MPC_REG 0xd8
5071 /* MPC: Invalid Receive Bus Number Check Enable */
5072 #define INTEL_MPC_REG_IRBNCE (1 << 26)
5074 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
5079 * When enabled, the IRBNCE bit of the MPC register enables the
5080 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
5081 * ensures that requester IDs fall within the bus number range
5082 * of the bridge. Enable if not already.
5084 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
5085 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
5086 pci_info(dev, "Enabling MPC IRBNCE\n");
5087 mpc |= INTEL_MPC_REG_IRBNCE;
5088 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
5093 * Currently this quirk does the equivalent of
5094 * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5096 * TODO: This quirk also needs to do equivalent of PCI_ACS_TB,
5097 * if dev->external_facing || dev->untrusted
5099 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
5101 if (!pci_quirk_intel_pch_acs_match(dev))
5104 if (pci_quirk_enable_intel_lpc_acs(dev)) {
5105 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n");
5109 pci_quirk_enable_intel_rp_mpc_acs(dev);
5111 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
5113 pci_info(dev, "Intel PCH root port ACS workaround enabled\n");
5118 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
5123 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5130 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5131 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5133 ctrl |= (cap & PCI_ACS_SV);
5134 ctrl |= (cap & PCI_ACS_RR);
5135 ctrl |= (cap & PCI_ACS_CR);
5136 ctrl |= (cap & PCI_ACS_UF);
5138 if (pci_ats_disabled() || dev->external_facing || dev->untrusted)
5139 ctrl |= (cap & PCI_ACS_TB);
5141 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5143 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n");
5148 static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
5153 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5160 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5161 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5163 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
5165 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5167 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n");
5172 static const struct pci_dev_acs_ops {
5175 int (*enable_acs)(struct pci_dev *dev);
5176 int (*disable_acs_redir)(struct pci_dev *dev);
5177 } pci_dev_acs_ops[] = {
5178 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5179 .enable_acs = pci_quirk_enable_intel_pch_acs,
5181 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5182 .enable_acs = pci_quirk_enable_intel_spt_pch_acs,
5183 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir,
5187 int pci_dev_specific_enable_acs(struct pci_dev *dev)
5189 const struct pci_dev_acs_ops *p;
5192 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5193 p = &pci_dev_acs_ops[i];
5194 if ((p->vendor == dev->vendor ||
5195 p->vendor == (u16)PCI_ANY_ID) &&
5196 (p->device == dev->device ||
5197 p->device == (u16)PCI_ANY_ID) &&
5199 ret = p->enable_acs(dev);
5208 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
5210 const struct pci_dev_acs_ops *p;
5213 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5214 p = &pci_dev_acs_ops[i];
5215 if ((p->vendor == dev->vendor ||
5216 p->vendor == (u16)PCI_ANY_ID) &&
5217 (p->device == dev->device ||
5218 p->device == (u16)PCI_ANY_ID) &&
5219 p->disable_acs_redir) {
5220 ret = p->disable_acs_redir(dev);
5230 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with
5231 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
5232 * Next Capability pointer in the MSI Capability Structure should point to
5233 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
5236 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
5241 struct pci_cap_saved_state *state;
5243 /* Bail if the hardware bug is fixed */
5244 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
5247 /* Bail if MSI Capability Structure is not found for some reason */
5248 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
5253 * Bail if Next Capability pointer in the MSI Capability Structure
5254 * is not the expected incorrect 0x00.
5256 pci_read_config_byte(pdev, pos + 1, &next_cap);
5261 * PCIe Capability Structure is expected to be at 0x50 and should
5262 * terminate the list (Next Capability pointer is 0x00). Verify
5263 * Capability Id and Next Capability pointer is as expected.
5264 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
5265 * to correctly set kernel data structures which have already been
5266 * set incorrectly due to the hardware bug.
5269 pci_read_config_word(pdev, pos, ®16);
5270 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
5272 #ifndef PCI_EXP_SAVE_REGS
5273 #define PCI_EXP_SAVE_REGS 7
5275 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
5277 pdev->pcie_cap = pos;
5278 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
5279 pdev->pcie_flags_reg = reg16;
5280 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
5281 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
5283 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
5284 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
5285 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
5286 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
5288 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
5292 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
5296 state->cap.cap_nr = PCI_CAP_ID_EXP;
5297 state->cap.cap_extended = 0;
5298 state->cap.size = size;
5299 cap = (u16 *)&state->cap.data[0];
5300 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
5301 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
5302 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
5303 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
5304 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
5305 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
5306 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
5307 hlist_add_head(&state->next, &pdev->saved_cap_space);
5310 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
5313 * FLR may cause the following to devices to hang:
5315 * AMD Starship/Matisse HD Audio Controller 0x1487
5316 * AMD Starship USB 3.0 Host Controller 0x148c
5317 * AMD Matisse USB 3.0 Host Controller 0x149c
5318 * Intel 82579LM Gigabit Ethernet Controller 0x1502
5319 * Intel 82579V Gigabit Ethernet Controller 0x1503
5322 static void quirk_no_flr(struct pci_dev *dev)
5324 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
5326 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr);
5327 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr);
5328 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
5329 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
5330 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
5332 static void quirk_no_ext_tags(struct pci_dev *pdev)
5334 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
5339 bridge->no_ext_tags = 1;
5340 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n");
5342 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5344 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5345 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5346 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5347 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5348 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5349 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5350 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5352 #ifdef CONFIG_PCI_ATS
5354 * Some devices require additional driver setup to enable ATS. Don't use
5355 * ATS for those devices as ATS will be enabled before the driver has had a
5356 * chance to load and configure the device.
5358 static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
5360 if (pdev->device == 0x15d8) {
5361 if (pdev->revision == 0xcf &&
5362 pdev->subsystem_vendor == 0xea50 &&
5363 (pdev->subsystem_device == 0xce19 ||
5364 pdev->subsystem_device == 0xcc10 ||
5365 pdev->subsystem_device == 0xcc08))
5372 pci_info(pdev, "disabling ATS\n");
5376 /* AMD Stoney platform GPU */
5377 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
5378 /* AMD Iceland dGPU */
5379 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
5380 /* AMD Navi10 dGPU */
5381 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7310, quirk_amd_harvest_no_ats);
5382 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
5383 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7318, quirk_amd_harvest_no_ats);
5384 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7319, quirk_amd_harvest_no_ats);
5385 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731a, quirk_amd_harvest_no_ats);
5386 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731b, quirk_amd_harvest_no_ats);
5387 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731e, quirk_amd_harvest_no_ats);
5388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731f, quirk_amd_harvest_no_ats);
5389 /* AMD Navi14 dGPU */
5390 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
5391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats);
5392 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7347, quirk_amd_harvest_no_ats);
5393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x734f, quirk_amd_harvest_no_ats);
5394 /* AMD Raven platform iGPU */
5395 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);
5396 #endif /* CONFIG_PCI_ATS */
5398 /* Freescale PCIe doesn't support MSI in RC mode */
5399 static void quirk_fsl_no_msi(struct pci_dev *pdev)
5401 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5404 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5407 * Although not allowed by the spec, some multi-function devices have
5408 * dependencies of one function (consumer) on another (supplier). For the
5409 * consumer to work in D0, the supplier must also be in D0. Create a
5410 * device link from the consumer to the supplier to enforce this
5411 * dependency. Runtime PM is allowed by default on the consumer to prevent
5412 * it from permanently keeping the supplier awake.
5414 static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5415 unsigned int supplier, unsigned int class,
5416 unsigned int class_shift)
5418 struct pci_dev *supplier_pdev;
5420 if (PCI_FUNC(pdev->devfn) != consumer)
5423 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5425 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5426 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5427 pci_dev_put(supplier_pdev);
5431 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5432 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5433 pci_info(pdev, "D0 power state depends on %s\n",
5434 pci_name(supplier_pdev));
5436 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5437 pci_name(supplier_pdev));
5439 pm_runtime_allow(&pdev->dev);
5440 pci_dev_put(supplier_pdev);
5444 * Create device link for GPUs with integrated HDA controller for streaming
5445 * audio to attached displays.
5447 static void quirk_gpu_hda(struct pci_dev *hda)
5449 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5451 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5452 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5453 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5454 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5455 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5456 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5459 * Create device link for GPUs with integrated USB xHCI Host
5460 * controller to VGA.
5462 static void quirk_gpu_usb(struct pci_dev *usb)
5464 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16);
5466 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5467 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5468 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5469 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5472 * Create device link for GPUs with integrated Type-C UCSI controller
5473 * to VGA. Currently there is no class code defined for UCSI device over PCI
5474 * so using UNKNOWN class for now and it will be updated when UCSI
5475 * over PCI gets a class code.
5477 #define PCI_CLASS_SERIAL_UNKNOWN 0x0c80
5478 static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
5480 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16);
5482 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5483 PCI_CLASS_SERIAL_UNKNOWN, 8,
5484 quirk_gpu_usb_typec_ucsi);
5485 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5486 PCI_CLASS_SERIAL_UNKNOWN, 8,
5487 quirk_gpu_usb_typec_ucsi);
5490 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
5491 * disabled. https://devtalk.nvidia.com/default/topic/1024022
5493 static void quirk_nvidia_hda(struct pci_dev *gpu)
5498 /* There was no integrated HDA controller before MCP89 */
5499 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M)
5502 /* Bit 25 at offset 0x488 enables the HDA controller */
5503 pci_read_config_dword(gpu, 0x488, &val);
5507 pci_info(gpu, "Enabling HDA controller\n");
5508 pci_write_config_dword(gpu, 0x488, val | BIT(25));
5510 /* The GPU becomes a multi-function device when the HDA is enabled */
5511 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
5512 gpu->multifunction = !!(hdr_type & 0x80);
5514 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5515 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5516 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5517 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5520 * Some IDT switches incorrectly flag an ACS Source Validation error on
5521 * completions for config read requests even though PCIe r4.0, sec
5522 * 6.12.1.1, says that completions are never affected by ACS Source
5523 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36:
5525 * Item #36 - Downstream port applies ACS Source Validation to Completions
5526 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that
5527 * completions are never affected by ACS Source Validation. However,
5528 * completions received by a downstream port of the PCIe switch from a
5529 * device that has not yet captured a PCIe bus number are incorrectly
5530 * dropped by ACS Source Validation by the switch downstream port.
5532 * The workaround suggested by IDT is to issue a config write to the
5533 * downstream device before issuing the first config read. This allows the
5534 * downstream device to capture its bus and device numbers (see PCIe r4.0,
5535 * sec 2.2.9), thus avoiding the ACS error on the completion.
5537 * However, we don't know when the device is ready to accept the config
5538 * write, so we do config reads until we receive a non-Config Request Retry
5539 * Status, then do the config write.
5541 * To avoid hitting the erratum when doing the config reads, we disable ACS
5542 * SV around this process.
5544 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
5549 struct pci_dev *bridge = bus->self;
5551 pos = bridge->acs_cap;
5553 /* Disable ACS SV before initial config reads */
5555 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl);
5556 if (ctrl & PCI_ACS_SV)
5557 pci_write_config_word(bridge, pos + PCI_ACS_CTRL,
5558 ctrl & ~PCI_ACS_SV);
5561 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);
5563 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */
5565 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0);
5567 /* Re-enable ACS_SV if it was previously enabled */
5568 if (ctrl & PCI_ACS_SV)
5569 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl);
5575 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between
5576 * NT endpoints via the internal switch fabric. These IDs replace the
5577 * originating requestor ID TLPs which access host memory on peer NTB
5578 * ports. Therefore, all proxy IDs must be aliased to the NTB device
5579 * to permit access when the IOMMU is turned on.
5581 static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
5584 struct ntb_info_regs __iomem *mmio_ntb;
5585 struct ntb_ctrl_regs __iomem *mmio_ctrl;
5590 if (pci_enable_device(pdev)) {
5591 pci_err(pdev, "Cannot enable Switchtec device\n");
5595 mmio = pci_iomap(pdev, 0, 0);
5597 pci_disable_device(pdev);
5598 pci_err(pdev, "Cannot iomap Switchtec device\n");
5602 pci_info(pdev, "Setting Switchtec proxy ID aliases\n");
5604 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
5605 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
5607 partition = ioread8(&mmio_ntb->partition_id);
5609 partition_map = ioread32(&mmio_ntb->ep_map);
5610 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32;
5611 partition_map &= ~(1ULL << partition);
5613 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) {
5614 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl;
5618 if (!(partition_map & (1ULL << pp)))
5621 pci_dbg(pdev, "Processing partition %d\n", pp);
5623 mmio_peer_ctrl = &mmio_ctrl[pp];
5625 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size);
5627 pci_warn(pdev, "Partition %d table_sz 0\n", pp);
5631 if (table_sz > 512) {
5633 "Invalid Switchtec partition %d table_sz %d\n",
5638 for (te = 0; te < table_sz; te++) {
5642 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]);
5643 devfn = (rid_entry >> 1) & 0xFF;
5645 "Aliasing Partition %d Proxy ID %02x.%d\n",
5646 pp, PCI_SLOT(devfn), PCI_FUNC(devfn));
5647 pci_add_dma_alias(pdev, devfn, 1);
5651 pci_iounmap(pdev, mmio);
5652 pci_disable_device(pdev);
5654 #define SWITCHTEC_QUIRK(vid) \
5655 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
5656 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
5658 SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */
5659 SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */
5660 SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */
5661 SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */
5662 SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */
5663 SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */
5664 SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */
5665 SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */
5666 SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */
5667 SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */
5668 SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */
5669 SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */
5670 SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */
5671 SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */
5672 SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */
5673 SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */
5674 SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */
5675 SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */
5676 SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */
5677 SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */
5678 SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */
5679 SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */
5680 SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */
5681 SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */
5682 SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */
5683 SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */
5684 SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */
5685 SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */
5686 SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */
5687 SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */
5688 SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */
5689 SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */
5690 SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */
5691 SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */
5692 SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */
5693 SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */
5694 SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */
5695 SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */
5696 SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */
5697 SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */
5698 SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */
5699 SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */
5700 SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */
5701 SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */
5702 SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */
5703 SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */
5704 SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */
5705 SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */
5706 SWITCHTEC_QUIRK(0x4352); /* PFXA 52XG4 */
5707 SWITCHTEC_QUIRK(0x4336); /* PFXA 36XG4 */
5708 SWITCHTEC_QUIRK(0x4328); /* PFXA 28XG4 */
5709 SWITCHTEC_QUIRK(0x4452); /* PSXA 52XG4 */
5710 SWITCHTEC_QUIRK(0x4436); /* PSXA 36XG4 */
5711 SWITCHTEC_QUIRK(0x4428); /* PSXA 28XG4 */
5712 SWITCHTEC_QUIRK(0x4552); /* PAXA 52XG4 */
5713 SWITCHTEC_QUIRK(0x4536); /* PAXA 36XG4 */
5714 SWITCHTEC_QUIRK(0x4528); /* PAXA 28XG4 */
5717 * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
5718 * These IDs are used to forward responses to the originator on the other
5719 * side of the NTB. Alias all possible IDs to the NTB to permit access when
5720 * the IOMMU is turned on.
5722 static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev)
5724 pci_info(pdev, "Setting PLX NTB proxy ID aliases\n");
5725 /* PLX NTB may use all 256 devfns */
5726 pci_add_dma_alias(pdev, 0, 256);
5728 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias);
5729 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias);
5732 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does
5733 * not always reset the secondary Nvidia GPU between reboots if the system
5734 * is configured to use Hybrid Graphics mode. This results in the GPU
5735 * being left in whatever state it was in during the *previous* boot, which
5736 * causes spurious interrupts from the GPU, which in turn causes us to
5737 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly,
5738 * this also completely breaks nouveau.
5740 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a
5741 * clean state and fixes all these issues.
5743 * When the machine is configured in Dedicated display mode, the issue
5744 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this
5745 * mode, so we can detect that and avoid resetting it.
5747 static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)
5752 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
5753 pdev->subsystem_device != 0x222e ||
5754 !pci_reset_supported(pdev))
5757 if (pci_enable_device_mem(pdev))
5761 * Based on nvkm_device_ctor() in
5762 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
5764 map = pci_iomap(pdev, 0, 0x23000);
5766 pci_err(pdev, "Can't map MMIO space\n");
5771 * Make sure the GPU looks like it's been POSTed before resetting
5774 if (ioread32(map + 0x2240c) & 0x2) {
5775 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n");
5776 ret = pci_reset_bus(pdev);
5778 pci_err(pdev, "Failed to reset GPU: %d\n", ret);
5783 pci_disable_device(pdev);
5785 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1,
5786 PCI_CLASS_DISPLAY_VGA, 8,
5787 quirk_reset_lenovo_thinkpad_p50_nvgpu);
5790 * Device [1b21:2142]
5791 * When in D0, PME# doesn't get asserted when plugging USB 3.0 device.
5793 static void pci_fixup_no_d0_pme(struct pci_dev *dev)
5795 pci_info(dev, "PME# does not work under D0, disabling it\n");
5796 dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT);
5798 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme);
5801 * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI]
5803 * These devices advertise PME# support in all power states but don't
5804 * reliably assert it.
5806 * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf)
5807 * says "The MSI Function is not implemented on this device" in chapters
5808 * 7.3.27, 7.3.29-7.3.31.
5810 static void pci_fixup_no_msi_no_pme(struct pci_dev *dev)
5812 #ifdef CONFIG_PCI_MSI
5813 pci_info(dev, "MSI is not implemented on this device, disabling it\n");
5816 pci_info(dev, "PME# is unreliable, disabling it\n");
5817 dev->pme_support = 0;
5819 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme);
5820 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme);
5822 static void apex_pci_fixup_class(struct pci_dev *pdev)
5824 pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class;
5826 DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
5827 PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);
5830 * Pericom PI7C9X2G404/PI7C9X2G304/PI7C9X2G303 switch erratum E5 -
5831 * ACS P2P Request Redirect is not functional
5833 * When ACS P2P Request Redirect is enabled and bandwidth is not balanced
5834 * between upstream and downstream ports, packets are queued in an internal
5835 * buffer until CPLD packet. The workaround is to use the switch in store and
5838 #define PI7C9X2Gxxx_MODE_REG 0x74
5839 #define PI7C9X2Gxxx_STORE_FORWARD_MODE BIT(0)
5840 static void pci_fixup_pericom_acs_store_forward(struct pci_dev *pdev)
5842 struct pci_dev *upstream;
5845 /* Downstream ports only */
5846 if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM)
5849 /* Check for ACS P2P Request Redirect use */
5852 pci_read_config_word(pdev, pdev->acs_cap + PCI_ACS_CTRL, &val);
5853 if (!(val & PCI_ACS_RR))
5856 upstream = pci_upstream_bridge(pdev);
5860 pci_read_config_word(upstream, PI7C9X2Gxxx_MODE_REG, &val);
5861 if (!(val & PI7C9X2Gxxx_STORE_FORWARD_MODE)) {
5862 pci_info(upstream, "Setting PI7C9X2Gxxx store-forward mode to avoid ACS erratum\n");
5863 pci_write_config_word(upstream, PI7C9X2Gxxx_MODE_REG, val |
5864 PI7C9X2Gxxx_STORE_FORWARD_MODE);
5868 * Apply fixup on enable and on resume, in order to apply the fix up whenever
5869 * ACS configuration changes or switch mode is reset
5871 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2404,
5872 pci_fixup_pericom_acs_store_forward);
5873 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2404,
5874 pci_fixup_pericom_acs_store_forward);
5875 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2304,
5876 pci_fixup_pericom_acs_store_forward);
5877 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2304,
5878 pci_fixup_pericom_acs_store_forward);
5879 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303,
5880 pci_fixup_pericom_acs_store_forward);
5881 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303,
5882 pci_fixup_pericom_acs_store_forward);
5884 static void nvidia_ion_ahci_fixup(struct pci_dev *pdev)
5886 pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING;
5888 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup);
5890 static void rom_bar_overlap_defect(struct pci_dev *dev)
5892 pci_info(dev, "working around ROM BAR overlap defect\n");
5893 dev->rom_bar_overlap = 1;
5895 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect);
5896 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect);
5897 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect);
5898 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect);
5900 #ifdef CONFIG_PCIEASPM
5902 * Several Intel DG2 graphics devices advertise that they can only tolerate
5903 * 1us latency when transitioning from L1 to L0, which may prevent ASPM L1
5904 * from being enabled. But in fact these devices can tolerate unlimited
5905 * latency. Override their Device Capabilities value to allow ASPM L1 to
5908 static void aspm_l1_acceptable_latency(struct pci_dev *dev)
5910 u32 l1_lat = FIELD_GET(PCI_EXP_DEVCAP_L1, dev->devcap);
5913 dev->devcap |= FIELD_PREP(PCI_EXP_DEVCAP_L1, 7);
5914 pci_info(dev, "ASPM: overriding L1 acceptable latency from %#x to 0x7\n",
5918 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f80, aspm_l1_acceptable_latency);
5919 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f81, aspm_l1_acceptable_latency);
5920 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f82, aspm_l1_acceptable_latency);
5921 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f83, aspm_l1_acceptable_latency);
5922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f84, aspm_l1_acceptable_latency);
5923 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f85, aspm_l1_acceptable_latency);
5924 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f86, aspm_l1_acceptable_latency);
5925 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f87, aspm_l1_acceptable_latency);
5926 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f88, aspm_l1_acceptable_latency);
5927 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5690, aspm_l1_acceptable_latency);
5928 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5691, aspm_l1_acceptable_latency);
5929 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5692, aspm_l1_acceptable_latency);
5930 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5693, aspm_l1_acceptable_latency);
5931 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5694, aspm_l1_acceptable_latency);
5932 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5695, aspm_l1_acceptable_latency);
5933 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a0, aspm_l1_acceptable_latency);
5934 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a1, aspm_l1_acceptable_latency);
5935 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a2, aspm_l1_acceptable_latency);
5936 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a3, aspm_l1_acceptable_latency);
5937 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a4, aspm_l1_acceptable_latency);
5938 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a5, aspm_l1_acceptable_latency);
5939 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a6, aspm_l1_acceptable_latency);
5940 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b0, aspm_l1_acceptable_latency);
5941 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b1, aspm_l1_acceptable_latency);
5942 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c0, aspm_l1_acceptable_latency);
5943 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency);