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/isa-dma.h> /* isa_dma_bridge_buggy */
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/acpi.h>
24 #include <linux/dmi.h>
25 #include <linux/ioport.h>
26 #include <linux/sched.h>
27 #include <linux/ktime.h>
29 #include <linux/nvme.h>
30 #include <linux/platform_data/x86/apple.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/suspend.h>
33 #include <linux/switchtec.h>
37 * Retrain the link of a downstream PCIe port by hand if necessary.
39 * This is needed at least where a downstream port of the ASMedia ASM2824
40 * Gen 3 switch is wired to the upstream port of the Pericom PI7C9X2G304
41 * Gen 2 switch, and observed with the Delock Riser Card PCI Express x1 >
42 * 2 x PCIe x1 device, P/N 41433, plugged into the SiFive HiFive Unmatched
45 * In such a configuration the switches are supposed to negotiate the link
46 * speed of preferably 5.0GT/s, falling back to 2.5GT/s. However the link
47 * continues switching between the two speeds indefinitely and the data
48 * link layer never reaches the active state, with link training reported
49 * repeatedly active ~84% of the time. Forcing the target link speed to
50 * 2.5GT/s with the upstream ASM2824 device makes the two switches talk to
51 * each other correctly however. And more interestingly retraining with a
52 * higher target link speed afterwards lets the two successfully negotiate
55 * With the ASM2824 we can rely on the otherwise optional Data Link Layer
56 * Link Active status bit and in the failed link training scenario it will
57 * be off along with the Link Bandwidth Management Status indicating that
58 * hardware has changed the link speed or width in an attempt to correct
59 * unreliable link operation. For a port that has been left unconnected
60 * both bits will be clear. So use this information to detect the problem
61 * rather than polling the Link Training bit and watching out for flips or
62 * at least the active status.
64 * Since the exact nature of the problem isn't known and in principle this
65 * could trigger where an ASM2824 device is downstream rather upstream,
66 * apply this erratum workaround to any downstream ports as long as they
67 * support Link Active reporting and have the Link Control 2 register.
68 * Restrict the speed to 2.5GT/s then with the Target Link Speed field,
69 * request a retrain and wait 200ms for the data link to go up.
71 * If this turns out successful and we know by the Vendor:Device ID it is
72 * safe to do so, then lift the restriction, letting the devices negotiate
73 * a higher speed. Also check for a similar 2.5GT/s speed restriction the
74 * firmware may have already arranged and lift it with ports that already
75 * report their data link being up.
77 * Return TRUE if the link has been successfully retrained, otherwise FALSE.
79 bool pcie_failed_link_retrain(struct pci_dev *dev)
81 static const struct pci_device_id ids[] = {
82 { PCI_VDEVICE(ASMEDIA, 0x2824) }, /* ASMedia ASM2824 */
87 if (!pci_is_pcie(dev) || !pcie_downstream_port(dev) ||
88 !pcie_cap_has_lnkctl2(dev) || !dev->link_active_reporting)
91 pcie_capability_read_word(dev, PCI_EXP_LNKCTL2, &lnkctl2);
92 pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta);
93 if ((lnksta & (PCI_EXP_LNKSTA_LBMS | PCI_EXP_LNKSTA_DLLLA)) ==
94 PCI_EXP_LNKSTA_LBMS) {
95 pci_info(dev, "broken device, retraining non-functional downstream link at 2.5GT/s\n");
97 lnkctl2 &= ~PCI_EXP_LNKCTL2_TLS;
98 lnkctl2 |= PCI_EXP_LNKCTL2_TLS_2_5GT;
99 pcie_capability_write_word(dev, PCI_EXP_LNKCTL2, lnkctl2);
101 if (pcie_retrain_link(dev, false)) {
102 pci_info(dev, "retraining failed\n");
106 pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta);
109 if ((lnksta & PCI_EXP_LNKSTA_DLLLA) &&
110 (lnkctl2 & PCI_EXP_LNKCTL2_TLS) == PCI_EXP_LNKCTL2_TLS_2_5GT &&
111 pci_match_id(ids, dev)) {
114 pci_info(dev, "removing 2.5GT/s downstream link speed restriction\n");
115 pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap);
116 lnkctl2 &= ~PCI_EXP_LNKCTL2_TLS;
117 lnkctl2 |= lnkcap & PCI_EXP_LNKCAP_SLS;
118 pcie_capability_write_word(dev, PCI_EXP_LNKCTL2, lnkctl2);
120 if (pcie_retrain_link(dev, false)) {
121 pci_info(dev, "retraining failed\n");
129 static ktime_t fixup_debug_start(struct pci_dev *dev,
130 void (*fn)(struct pci_dev *dev))
133 pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current));
138 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
139 void (*fn)(struct pci_dev *dev))
141 ktime_t delta, rettime;
142 unsigned long long duration;
144 rettime = ktime_get();
145 delta = ktime_sub(rettime, calltime);
146 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
147 if (initcall_debug || duration > 10000)
148 pci_info(dev, "%pS took %lld usecs\n", fn, duration);
151 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
152 struct pci_fixup *end)
157 if ((f->class == (u32) (dev->class >> f->class_shift) ||
158 f->class == (u32) PCI_ANY_ID) &&
159 (f->vendor == dev->vendor ||
160 f->vendor == (u16) PCI_ANY_ID) &&
161 (f->device == dev->device ||
162 f->device == (u16) PCI_ANY_ID)) {
163 void (*hook)(struct pci_dev *dev);
164 #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
165 hook = offset_to_ptr(&f->hook_offset);
169 calltime = fixup_debug_start(dev, hook);
171 fixup_debug_report(dev, calltime, hook);
175 extern struct pci_fixup __start_pci_fixups_early[];
176 extern struct pci_fixup __end_pci_fixups_early[];
177 extern struct pci_fixup __start_pci_fixups_header[];
178 extern struct pci_fixup __end_pci_fixups_header[];
179 extern struct pci_fixup __start_pci_fixups_final[];
180 extern struct pci_fixup __end_pci_fixups_final[];
181 extern struct pci_fixup __start_pci_fixups_enable[];
182 extern struct pci_fixup __end_pci_fixups_enable[];
183 extern struct pci_fixup __start_pci_fixups_resume[];
184 extern struct pci_fixup __end_pci_fixups_resume[];
185 extern struct pci_fixup __start_pci_fixups_resume_early[];
186 extern struct pci_fixup __end_pci_fixups_resume_early[];
187 extern struct pci_fixup __start_pci_fixups_suspend[];
188 extern struct pci_fixup __end_pci_fixups_suspend[];
189 extern struct pci_fixup __start_pci_fixups_suspend_late[];
190 extern struct pci_fixup __end_pci_fixups_suspend_late[];
192 static bool pci_apply_fixup_final_quirks;
194 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
196 struct pci_fixup *start, *end;
199 case pci_fixup_early:
200 start = __start_pci_fixups_early;
201 end = __end_pci_fixups_early;
204 case pci_fixup_header:
205 start = __start_pci_fixups_header;
206 end = __end_pci_fixups_header;
209 case pci_fixup_final:
210 if (!pci_apply_fixup_final_quirks)
212 start = __start_pci_fixups_final;
213 end = __end_pci_fixups_final;
216 case pci_fixup_enable:
217 start = __start_pci_fixups_enable;
218 end = __end_pci_fixups_enable;
221 case pci_fixup_resume:
222 start = __start_pci_fixups_resume;
223 end = __end_pci_fixups_resume;
226 case pci_fixup_resume_early:
227 start = __start_pci_fixups_resume_early;
228 end = __end_pci_fixups_resume_early;
231 case pci_fixup_suspend:
232 start = __start_pci_fixups_suspend;
233 end = __end_pci_fixups_suspend;
236 case pci_fixup_suspend_late:
237 start = __start_pci_fixups_suspend_late;
238 end = __end_pci_fixups_suspend_late;
242 /* stupid compiler warning, you would think with an enum... */
245 pci_do_fixups(dev, start, end);
247 EXPORT_SYMBOL(pci_fixup_device);
249 static int __init pci_apply_final_quirks(void)
251 struct pci_dev *dev = NULL;
255 if (pci_cache_line_size)
256 pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2);
258 pci_apply_fixup_final_quirks = true;
259 for_each_pci_dev(dev) {
260 pci_fixup_device(pci_fixup_final, dev);
262 * If arch hasn't set it explicitly yet, use the CLS
263 * value shared by all PCI devices. If there's a
264 * mismatch, fall back to the default value.
266 if (!pci_cache_line_size) {
267 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
270 if (!tmp || cls == tmp)
273 pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n",
275 pci_dfl_cache_line_size << 2);
276 pci_cache_line_size = pci_dfl_cache_line_size;
280 if (!pci_cache_line_size) {
281 pr_info("PCI: CLS %u bytes, default %u\n", cls << 2,
282 pci_dfl_cache_line_size << 2);
283 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
288 fs_initcall_sync(pci_apply_final_quirks);
291 * Decoding should be disabled for a PCI device during BAR sizing to avoid
292 * conflict. But doing so may cause problems on host bridge and perhaps other
293 * key system devices. For devices that need to have mmio decoding always-on,
294 * we need to set the dev->mmio_always_on bit.
296 static void quirk_mmio_always_on(struct pci_dev *dev)
298 dev->mmio_always_on = 1;
300 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
301 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
304 * The Mellanox Tavor device gives false positive parity errors. Disable
305 * parity error reporting.
307 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, pci_disable_parity);
308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, pci_disable_parity);
311 * Deal with broken BIOSes that neglect to enable passive release,
312 * which can cause problems in combination with the 82441FX/PPro MTRRs
314 static void quirk_passive_release(struct pci_dev *dev)
316 struct pci_dev *d = NULL;
320 * We have to make sure a particular bit is set in the PIIX3
321 * ISA bridge, so we have to go out and find it.
323 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
324 pci_read_config_byte(d, 0x82, &dlc);
326 pci_info(d, "PIIX3: Enabling Passive Release\n");
328 pci_write_config_byte(d, 0x82, dlc);
332 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
333 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
337 * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a
338 * workaround but VIA don't answer queries. If you happen to have good
339 * contacts at VIA ask them for me please -- Alan
341 * This appears to be BIOS not version dependent. So presumably there is a
344 static void quirk_isa_dma_hangs(struct pci_dev *dev)
346 if (!isa_dma_bridge_buggy) {
347 isa_dma_bridge_buggy = 1;
348 pci_info(dev, "Activating ISA DMA hang workarounds\n");
352 * It's not totally clear which chipsets are the problematic ones. We know
353 * 82C586 and 82C596 variants are affected.
355 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
356 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
357 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
358 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
359 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
361 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
364 #ifdef CONFIG_HAS_IOPORT
366 * Intel NM10 "Tiger Point" LPC PM1a_STS.BM_STS must be clear
367 * for some HT machines to use C4 w/o hanging.
369 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
374 pci_read_config_dword(dev, 0x40, &pmbase);
375 pmbase = pmbase & 0xff80;
379 pci_info(dev, FW_BUG "Tiger Point LPC.BM_STS cleared\n");
383 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
386 /* Chipsets where PCI->PCI transfers vanish or hang */
387 static void quirk_nopcipci(struct pci_dev *dev)
389 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
390 pci_info(dev, "Disabling direct PCI/PCI transfers\n");
391 pci_pci_problems |= PCIPCI_FAIL;
394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
395 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
397 static void quirk_nopciamd(struct pci_dev *dev)
400 pci_read_config_byte(dev, 0x08, &rev);
403 pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
404 pci_pci_problems |= PCIAGP_FAIL;
407 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
409 /* Triton requires workarounds to be used by the drivers */
410 static void quirk_triton(struct pci_dev *dev)
412 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
413 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
414 pci_pci_problems |= PCIPCI_TRITON;
417 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
418 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
419 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
420 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
423 * VIA Apollo KT133 needs PCI latency patch
424 * Made according to a Windows driver-based patch by George E. Breese;
425 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
426 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on
427 * which Mr Breese based his work.
429 * Updated based on further information from the site and also on
430 * information provided by VIA
432 static void quirk_vialatency(struct pci_dev *dev)
438 * Ok, we have a potential problem chipset here. Now see if we have
439 * a buggy southbridge.
441 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
445 * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A;
447 * Check for buggy part revisions
449 if (p->revision < 0x40 || p->revision > 0x42)
452 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
453 if (p == NULL) /* No problem parts */
456 /* Check for buggy part revisions */
457 if (p->revision < 0x10 || p->revision > 0x12)
462 * Ok we have the problem. Now set the PCI master grant to occur
463 * every master grant. The apparent bug is that under high PCI load
464 * (quite common in Linux of course) you can get data loss when the
465 * CPU is held off the bus for 3 bus master requests. This happens
466 * to include the IDE controllers....
468 * VIA only apply this fix when an SB Live! is present but under
469 * both Linux and Windows this isn't enough, and we have seen
470 * corruption without SB Live! but with things like 3 UDMA IDE
471 * controllers. So we ignore that bit of the VIA recommendation..
473 pci_read_config_byte(dev, 0x76, &busarb);
476 * Set bit 4 and bit 5 of byte 76 to 0x01
477 * "Master priority rotation on every PCI master grant"
481 pci_write_config_byte(dev, 0x76, busarb);
482 pci_info(dev, "Applying VIA southbridge workaround\n");
486 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
487 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
488 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
489 /* Must restore this on a resume from RAM */
490 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
491 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
492 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
494 /* VIA Apollo VP3 needs ETBF on BT848/878 */
495 static void quirk_viaetbf(struct pci_dev *dev)
497 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
498 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
499 pci_pci_problems |= PCIPCI_VIAETBF;
502 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
504 static void quirk_vsfx(struct pci_dev *dev)
506 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
507 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
508 pci_pci_problems |= PCIPCI_VSFX;
511 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
514 * ALi Magik requires workarounds to be used by the drivers that DMA to AGP
515 * space. Latency must be set to 0xA and Triton workaround applied too.
516 * [Info kindly provided by ALi]
518 static void quirk_alimagik(struct pci_dev *dev)
520 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
521 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
522 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
525 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
526 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
528 /* Natoma has some interesting boundary conditions with Zoran stuff at least */
529 static void quirk_natoma(struct pci_dev *dev)
531 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
532 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
533 pci_pci_problems |= PCIPCI_NATOMA;
536 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
537 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
538 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
540 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
544 * This chip can cause PCI parity errors if config register 0xA0 is read
545 * while DMAs are occurring.
547 static void quirk_citrine(struct pci_dev *dev)
549 dev->cfg_size = 0xA0;
551 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
554 * This chip can cause bus lockups if config addresses above 0x600
555 * are read or written.
557 static void quirk_nfp6000(struct pci_dev *dev)
559 dev->cfg_size = 0x600;
561 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
562 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
563 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000);
564 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
566 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
567 static void quirk_extend_bar_to_page(struct pci_dev *dev)
571 for (i = 0; i < PCI_STD_NUM_BARS; i++) {
572 struct resource *r = &dev->resource[i];
574 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
575 r->end = PAGE_SIZE - 1;
577 r->flags |= IORESOURCE_UNSET;
578 pci_info(dev, "expanded BAR %d to page size: %pR\n",
583 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
586 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
587 * If it's needed, re-allocate the region.
589 static void quirk_s3_64M(struct pci_dev *dev)
591 struct resource *r = &dev->resource[0];
593 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
594 r->flags |= IORESOURCE_UNSET;
599 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
600 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
602 static void quirk_io(struct pci_dev *dev, int pos, unsigned int size,
606 struct pci_bus_region bus_region;
607 struct resource *res = dev->resource + pos;
609 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
614 res->name = pci_name(dev);
615 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
617 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
618 region &= ~(size - 1);
620 /* Convert from PCI bus to resource space */
621 bus_region.start = region;
622 bus_region.end = region + size - 1;
623 pcibios_bus_to_resource(dev->bus, res, &bus_region);
625 pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
626 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
630 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
631 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
632 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
633 * (which conflicts w/ BAR1's memory range).
635 * CS553x's ISA PCI BARs may also be read-only (ref:
636 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
638 static void quirk_cs5536_vsa(struct pci_dev *dev)
640 static char *name = "CS5536 ISA bridge";
642 if (pci_resource_len(dev, 0) != 8) {
643 quirk_io(dev, 0, 8, name); /* SMB */
644 quirk_io(dev, 1, 256, name); /* GPIO */
645 quirk_io(dev, 2, 64, name); /* MFGPT */
646 pci_info(dev, "%s bug detected (incorrect header); workaround applied\n",
650 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
652 static void quirk_io_region(struct pci_dev *dev, int port,
653 unsigned int size, int nr, const char *name)
656 struct pci_bus_region bus_region;
657 struct resource *res = dev->resource + nr;
659 pci_read_config_word(dev, port, ®ion);
660 region &= ~(size - 1);
665 res->name = pci_name(dev);
666 res->flags = IORESOURCE_IO;
668 /* Convert from PCI bus to resource space */
669 bus_region.start = region;
670 bus_region.end = region + size - 1;
671 pcibios_bus_to_resource(dev->bus, res, &bus_region);
673 if (!pci_claim_resource(dev, nr))
674 pci_info(dev, "quirk: %pR claimed by %s\n", res, name);
678 * ATI Northbridge setups MCE the processor if you even read somewhere
679 * between 0x3b0->0x3bb or read 0x3d3
681 static void quirk_ati_exploding_mce(struct pci_dev *dev)
683 pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
684 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
685 request_region(0x3b0, 0x0C, "RadeonIGP");
686 request_region(0x3d3, 0x01, "RadeonIGP");
688 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
691 * In the AMD NL platform, this device ([1022:7912]) has a class code of
692 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
695 * But the dwc3 driver is a more specific driver for this device, and we'd
696 * prefer to use it instead of xhci. To prevent xhci from claiming the
697 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
698 * defines as "USB device (not host controller)". The dwc3 driver can then
699 * claim it based on its Vendor and Device ID.
701 static void quirk_amd_nl_class(struct pci_dev *pdev)
703 u32 class = pdev->class;
705 /* Use "USB Device (not host controller)" class */
706 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
707 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
710 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
714 * Synopsys USB 3.x host HAPS platform has a class code of
715 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
716 * devices should use dwc3-haps driver. Change these devices' class code to
717 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming
720 static void quirk_synopsys_haps(struct pci_dev *pdev)
722 u32 class = pdev->class;
724 switch (pdev->device) {
725 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
726 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
727 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31:
728 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
729 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
734 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
735 PCI_CLASS_SERIAL_USB_XHCI, 0,
736 quirk_synopsys_haps);
739 * Let's make the southbridge information explicit instead of having to
740 * worry about people probing the ACPI areas, for example.. (Yes, it
741 * happens, and if you read the wrong ACPI register it will put the machine
742 * to sleep with no way of waking it up again. Bummer).
744 * ALI M7101: Two IO regions pointed to by words at
745 * 0xE0 (64 bytes of ACPI registers)
746 * 0xE2 (32 bytes of SMB registers)
748 static void quirk_ali7101_acpi(struct pci_dev *dev)
750 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
751 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
753 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
755 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
758 u32 mask, size, base;
760 pci_read_config_dword(dev, port, &devres);
761 if ((devres & enable) != enable)
763 mask = (devres >> 16) & 15;
764 base = devres & 0xffff;
767 unsigned int bit = size >> 1;
768 if ((bit & mask) == bit)
773 * For now we only print it out. Eventually we'll want to
774 * reserve it (at least if it's in the 0x1000+ range), but
775 * let's get enough confirmation reports first.
778 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
781 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
784 u32 mask, size, base;
786 pci_read_config_dword(dev, port, &devres);
787 if ((devres & enable) != enable)
789 base = devres & 0xffff0000;
790 mask = (devres & 0x3f) << 16;
793 unsigned int bit = size >> 1;
794 if ((bit & mask) == bit)
800 * For now we only print it out. Eventually we'll want to
801 * reserve it, but let's get enough confirmation reports first.
804 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
808 * PIIX4 ACPI: Two IO regions pointed to by longwords at
809 * 0x40 (64 bytes of ACPI registers)
810 * 0x90 (16 bytes of SMB registers)
811 * and a few strange programmable PIIX4 device resources.
813 static void quirk_piix4_acpi(struct pci_dev *dev)
817 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
818 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
820 /* Device resource A has enables for some of the other ones */
821 pci_read_config_dword(dev, 0x5c, &res_a);
823 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
824 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
826 /* Device resource D is just bitfields for static resources */
828 /* Device 12 enabled? */
829 if (res_a & (1 << 29)) {
830 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
831 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
833 /* Device 13 enabled? */
834 if (res_a & (1 << 30)) {
835 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
836 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
838 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
839 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
841 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
842 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
844 #define ICH_PMBASE 0x40
845 #define ICH_ACPI_CNTL 0x44
846 #define ICH4_ACPI_EN 0x10
847 #define ICH6_ACPI_EN 0x80
848 #define ICH4_GPIOBASE 0x58
849 #define ICH4_GPIO_CNTL 0x5c
850 #define ICH4_GPIO_EN 0x10
851 #define ICH6_GPIOBASE 0x48
852 #define ICH6_GPIO_CNTL 0x4c
853 #define ICH6_GPIO_EN 0x10
856 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
857 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
858 * 0x58 (64 bytes of GPIO I/O space)
860 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
865 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
866 * with low legacy (and fixed) ports. We don't know the decoding
867 * priority and can't tell whether the legacy device or the one created
868 * here is really at that address. This happens on boards with broken
871 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
872 if (enable & ICH4_ACPI_EN)
873 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
874 "ICH4 ACPI/GPIO/TCO");
876 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
877 if (enable & ICH4_GPIO_EN)
878 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
881 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
882 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
884 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
888 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
889 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
890 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
892 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
896 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
897 if (enable & ICH6_ACPI_EN)
898 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
899 "ICH6 ACPI/GPIO/TCO");
901 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
902 if (enable & ICH6_GPIO_EN)
903 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
907 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
908 const char *name, int dynsize)
913 pci_read_config_dword(dev, reg, &val);
921 * This is not correct. It is 16, 32 or 64 bytes depending on
922 * register D31:F0:ADh bits 5:4.
924 * But this gets us at least _part_ of it.
933 * Just print it out for now. We should reserve it after more
936 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
939 static void quirk_ich6_lpc(struct pci_dev *dev)
941 /* Shared ACPI/GPIO decode with all ICH6+ */
942 ich6_lpc_acpi_gpio(dev);
944 /* ICH6-specific generic IO decode */
945 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
946 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
948 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
949 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
951 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
957 pci_read_config_dword(dev, reg, &val);
963 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */
965 mask = (val >> 16) & 0xfc;
969 * Just print it out for now. We should reserve it after more
972 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
975 /* ICH7-10 has the same common LPC generic IO decode registers */
976 static void quirk_ich7_lpc(struct pci_dev *dev)
978 /* We share the common ACPI/GPIO decode with ICH6 */
979 ich6_lpc_acpi_gpio(dev);
981 /* And have 4 ICH7+ generic decodes */
982 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
983 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
984 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
985 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
987 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
988 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
989 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
990 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
991 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
992 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
993 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
995 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
996 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
997 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
998 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
999 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
1002 * VIA ACPI: One IO region pointed to by longword at
1003 * 0x48 or 0x20 (256 bytes of ACPI registers)
1005 static void quirk_vt82c586_acpi(struct pci_dev *dev)
1007 if (dev->revision & 0x10)
1008 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
1011 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
1014 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
1015 * 0x48 (256 bytes of ACPI registers)
1016 * 0x70 (128 bytes of hardware monitoring register)
1017 * 0x90 (16 bytes of SMB registers)
1019 static void quirk_vt82c686_acpi(struct pci_dev *dev)
1021 quirk_vt82c586_acpi(dev);
1023 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
1026 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
1028 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
1031 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
1032 * 0x88 (128 bytes of power management registers)
1033 * 0xd0 (16 bytes of SMB registers)
1035 static void quirk_vt8235_acpi(struct pci_dev *dev)
1037 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
1038 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
1040 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
1043 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast
1044 * back-to-back: Disable fast back-to-back on the secondary bus segment
1046 static void quirk_xio2000a(struct pci_dev *dev)
1048 struct pci_dev *pdev;
1051 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
1052 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
1053 pci_read_config_word(pdev, PCI_COMMAND, &command);
1054 if (command & PCI_COMMAND_FAST_BACK)
1055 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
1058 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
1061 #ifdef CONFIG_X86_IO_APIC
1063 #include <asm/io_apic.h>
1066 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
1067 * devices to the external APIC.
1069 * TODO: When we have device-specific interrupt routers, this code will go
1072 static void quirk_via_ioapic(struct pci_dev *dev)
1077 tmp = 0; /* nothing routed to external APIC */
1079 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
1081 pci_info(dev, "%s VIA external APIC routing\n",
1082 tmp ? "Enabling" : "Disabling");
1084 /* Offset 0x58: External APIC IRQ output control */
1085 pci_write_config_byte(dev, 0x58, tmp);
1087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1088 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1091 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
1092 * This leads to doubled level interrupt rates.
1093 * Set this bit to get rid of cycle wastage.
1094 * Otherwise uncritical.
1096 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
1099 #define BYPASS_APIC_DEASSERT 8
1101 pci_read_config_byte(dev, 0x5B, &misc_control2);
1102 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
1103 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
1104 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
1107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1108 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1111 * The AMD IO-APIC can hang the box when an APIC IRQ is masked.
1112 * We check all revs >= B0 (yet not in the pre production!) as the bug
1113 * is currently marked NoFix
1115 * We have multiple reports of hangs with this chipset that went away with
1116 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1117 * of course. However the advice is demonstrably good even if so.
1119 static void quirk_amd_ioapic(struct pci_dev *dev)
1121 if (dev->revision >= 0x02) {
1122 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1123 pci_warn(dev, " : booting with the \"noapic\" option\n");
1126 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1127 #endif /* CONFIG_X86_IO_APIC */
1129 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
1131 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
1133 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */
1134 if (dev->subsystem_device == 0xa118)
1135 dev->sriov->link = dev->devfn;
1137 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
1141 * Some settings of MMRBC can lead to data corruption so block changes.
1142 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
1144 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
1146 if (dev->subordinate && dev->revision <= 0x12) {
1147 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
1149 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
1152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1155 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up
1156 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register
1157 * at all. Therefore it seems like setting the pci_dev's IRQ to the value
1158 * of the ACPI SCI interrupt is only done for convenience.
1161 static void quirk_via_acpi(struct pci_dev *d)
1165 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */
1166 pci_read_config_byte(d, 0x42, &irq);
1168 if (irq && (irq != 2))
1171 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
1172 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1174 /* VIA bridges which have VLink */
1175 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
1177 static void quirk_via_bridge(struct pci_dev *dev)
1179 /* See what bridge we have and find the device ranges */
1180 switch (dev->device) {
1181 case PCI_DEVICE_ID_VIA_82C686:
1183 * The VT82C686 is special; it attaches to PCI and can have
1184 * any device number. All its subdevices are functions of
1185 * that single device.
1187 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
1188 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
1190 case PCI_DEVICE_ID_VIA_8237:
1191 case PCI_DEVICE_ID_VIA_8237A:
1192 via_vlink_dev_lo = 15;
1194 case PCI_DEVICE_ID_VIA_8235:
1195 via_vlink_dev_lo = 16;
1197 case PCI_DEVICE_ID_VIA_8231:
1198 case PCI_DEVICE_ID_VIA_8233_0:
1199 case PCI_DEVICE_ID_VIA_8233A:
1200 case PCI_DEVICE_ID_VIA_8233C_0:
1201 via_vlink_dev_lo = 17;
1205 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
1206 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
1207 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
1208 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
1209 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
1210 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
1211 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
1212 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
1215 * quirk_via_vlink - VIA VLink IRQ number update
1218 * If the device we are dealing with is on a PIC IRQ we need to ensure that
1219 * the IRQ line register which usually is not relevant for PCI cards, is
1220 * actually written so that interrupts get sent to the right place.
1222 * We only do this on systems where a VIA south bridge was detected, and
1223 * only for VIA devices on the motherboard (see quirk_via_bridge above).
1225 static void quirk_via_vlink(struct pci_dev *dev)
1229 /* Check if we have VLink at all */
1230 if (via_vlink_dev_lo == -1)
1235 /* Don't quirk interrupts outside the legacy IRQ range */
1236 if (!new_irq || new_irq > 15)
1239 /* Internal device ? */
1240 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
1241 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1245 * This is an internal VLink device on a PIC interrupt. The BIOS
1246 * ought to have set this but may not have, so we redo it.
1248 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
1249 if (new_irq != irq) {
1250 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n",
1252 udelay(15); /* unknown if delay really needed */
1253 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
1256 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
1259 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID
1260 * of VT82C597 for backward compatibility. We need to switch it off to be
1261 * able to recognize the real type of the chip.
1263 static void quirk_vt82c598_id(struct pci_dev *dev)
1265 pci_write_config_byte(dev, 0xfc, 0);
1266 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
1268 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1271 * CardBus controllers have a legacy base address that enables them to
1272 * respond as i82365 pcmcia controllers. We don't want them to do this
1273 * even if the Linux CardBus driver is not loaded, because the Linux i82365
1274 * driver does not (and should not) handle CardBus.
1276 static void quirk_cardbus_legacy(struct pci_dev *dev)
1278 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1280 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1281 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1282 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1283 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1286 * Following the PCI ordering rules is optional on the AMD762. I'm not sure
1287 * what the designers were smoking but let's not inhale...
1289 * To be fair to AMD, it follows the spec by default, it's BIOS people who
1292 static void quirk_amd_ordering(struct pci_dev *dev)
1295 pci_read_config_dword(dev, 0x4C, &pcic);
1296 if ((pcic & 6) != 6) {
1298 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1299 pci_write_config_dword(dev, 0x4C, pcic);
1300 pci_read_config_dword(dev, 0x84, &pcic);
1301 pcic |= (1 << 23); /* Required in this mode */
1302 pci_write_config_dword(dev, 0x84, pcic);
1305 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1306 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1309 * DreamWorks-provided workaround for Dunord I-3000 problem
1311 * This card decodes and responds to addresses not apparently assigned to
1312 * it. We force a larger allocation to ensure that nothing gets put too
1315 static void quirk_dunord(struct pci_dev *dev)
1317 struct resource *r = &dev->resource[1];
1319 r->flags |= IORESOURCE_UNSET;
1323 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1326 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive
1327 * decoding (transparent), and does indicate this in the ProgIf.
1328 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01.
1330 static void quirk_transparent_bridge(struct pci_dev *dev)
1332 dev->transparent = 1;
1334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1338 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce
1339 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets
1340 * found at http://www.national.com/analog for info on what these bits do.
1341 * <christer@weinigel.se>
1343 static void quirk_mediagx_master(struct pci_dev *dev)
1347 pci_read_config_byte(dev, 0x41, ®);
1350 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1352 pci_write_config_byte(dev, 0x41, reg);
1355 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1356 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1359 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but
1360 * in the odd case it is not the results are corruption hence the presence
1363 static void quirk_disable_pxb(struct pci_dev *pdev)
1367 if (pdev->revision != 0x04) /* Only C0 requires this */
1369 pci_read_config_word(pdev, 0x40, &config);
1370 if (config & (1<<6)) {
1372 pci_write_config_word(pdev, 0x40, config);
1373 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n");
1376 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1377 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1379 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1381 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1384 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1386 pci_read_config_byte(pdev, 0x40, &tmp);
1387 pci_write_config_byte(pdev, 0x40, tmp|1);
1388 pci_write_config_byte(pdev, 0x9, 1);
1389 pci_write_config_byte(pdev, 0xa, 6);
1390 pci_write_config_byte(pdev, 0x40, tmp);
1392 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1393 pci_info(pdev, "set SATA to AHCI mode\n");
1396 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1397 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1398 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1399 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1400 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1401 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1402 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1403 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1405 /* Serverworks CSB5 IDE does not fully support native mode */
1406 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1409 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1413 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1414 /* PCI layer will sort out resources */
1417 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1419 /* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */
1420 static void quirk_ide_samemode(struct pci_dev *pdev)
1424 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1426 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1427 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n");
1430 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1433 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1435 /* Some ATA devices break if put into D3 */
1436 static void quirk_no_ata_d3(struct pci_dev *pdev)
1438 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1440 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1441 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1442 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1443 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1444 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1445 /* ALi loses some register settings that we cannot then restore */
1446 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1447 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1448 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1449 occur when mode detecting */
1450 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1451 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1454 * This was originally an Alpha-specific thing, but it really fits here.
1455 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1457 static void quirk_eisa_bridge(struct pci_dev *dev)
1459 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1461 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1464 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1465 * is not activated. The myth is that Asus said that they do not want the
1466 * users to be irritated by just another PCI Device in the Win98 device
1467 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1468 * package 2.7.0 for details)
1470 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1471 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1472 * becomes necessary to do this tweak in two steps -- the chosen trigger
1473 * is either the Host bridge (preferred) or on-board VGA controller.
1475 * Note that we used to unhide the SMBus that way on Toshiba laptops
1476 * (Satellite A40 and Tecra M2) but then found that the thermal management
1477 * was done by SMM code, which could cause unsynchronized concurrent
1478 * accesses to the SMBus registers, with potentially bad effects. Thus you
1479 * should be very careful when adding new entries: if SMM is accessing the
1480 * Intel SMBus, this is a very good reason to leave it hidden.
1482 * Likewise, many recent laptops use ACPI for thermal management. If the
1483 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1484 * natively, and keeping the SMBus hidden is the right thing to do. If you
1485 * are about to add an entry in the table below, please first disassemble
1486 * the DSDT and double-check that there is no code accessing the SMBus.
1488 static int asus_hides_smbus;
1490 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1492 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1493 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1494 switch (dev->subsystem_device) {
1495 case 0x8025: /* P4B-LX */
1496 case 0x8070: /* P4B */
1497 case 0x8088: /* P4B533 */
1498 case 0x1626: /* L3C notebook */
1499 asus_hides_smbus = 1;
1501 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1502 switch (dev->subsystem_device) {
1503 case 0x80b1: /* P4GE-V */
1504 case 0x80b2: /* P4PE */
1505 case 0x8093: /* P4B533-V */
1506 asus_hides_smbus = 1;
1508 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1509 switch (dev->subsystem_device) {
1510 case 0x8030: /* P4T533 */
1511 asus_hides_smbus = 1;
1513 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1514 switch (dev->subsystem_device) {
1515 case 0x8070: /* P4G8X Deluxe */
1516 asus_hides_smbus = 1;
1518 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1519 switch (dev->subsystem_device) {
1520 case 0x80c9: /* PU-DLS */
1521 asus_hides_smbus = 1;
1523 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1524 switch (dev->subsystem_device) {
1525 case 0x1751: /* M2N notebook */
1526 case 0x1821: /* M5N notebook */
1527 case 0x1897: /* A6L notebook */
1528 asus_hides_smbus = 1;
1530 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1531 switch (dev->subsystem_device) {
1532 case 0x184b: /* W1N notebook */
1533 case 0x186a: /* M6Ne notebook */
1534 asus_hides_smbus = 1;
1536 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1537 switch (dev->subsystem_device) {
1538 case 0x80f2: /* P4P800-X */
1539 asus_hides_smbus = 1;
1541 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1542 switch (dev->subsystem_device) {
1543 case 0x1882: /* M6V notebook */
1544 case 0x1977: /* A6VA notebook */
1545 asus_hides_smbus = 1;
1547 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1548 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1549 switch (dev->subsystem_device) {
1550 case 0x088C: /* HP Compaq nc8000 */
1551 case 0x0890: /* HP Compaq nc6000 */
1552 asus_hides_smbus = 1;
1554 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1555 switch (dev->subsystem_device) {
1556 case 0x12bc: /* HP D330L */
1557 case 0x12bd: /* HP D530 */
1558 case 0x006a: /* HP Compaq nx9500 */
1559 asus_hides_smbus = 1;
1561 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1562 switch (dev->subsystem_device) {
1563 case 0x12bf: /* HP xw4100 */
1564 asus_hides_smbus = 1;
1566 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1567 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1568 switch (dev->subsystem_device) {
1569 case 0xC00C: /* Samsung P35 notebook */
1570 asus_hides_smbus = 1;
1572 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1573 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1574 switch (dev->subsystem_device) {
1575 case 0x0058: /* Compaq Evo N620c */
1576 asus_hides_smbus = 1;
1578 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1579 switch (dev->subsystem_device) {
1580 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1581 /* Motherboard doesn't have Host bridge
1582 * subvendor/subdevice IDs, therefore checking
1583 * its on-board VGA controller */
1584 asus_hides_smbus = 1;
1586 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1587 switch (dev->subsystem_device) {
1588 case 0x00b8: /* Compaq Evo D510 CMT */
1589 case 0x00b9: /* Compaq Evo D510 SFF */
1590 case 0x00ba: /* Compaq Evo D510 USDT */
1591 /* Motherboard doesn't have Host bridge
1592 * subvendor/subdevice IDs and on-board VGA
1593 * controller is disabled if an AGP card is
1594 * inserted, therefore checking USB UHCI
1596 asus_hides_smbus = 1;
1598 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1599 switch (dev->subsystem_device) {
1600 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1601 /* Motherboard doesn't have host bridge
1602 * subvendor/subdevice IDs, therefore checking
1603 * its on-board VGA controller */
1604 asus_hides_smbus = 1;
1608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1616 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1617 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1619 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1620 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1621 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1623 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1627 if (likely(!asus_hides_smbus))
1630 pci_read_config_word(dev, 0xF2, &val);
1632 pci_write_config_word(dev, 0xF2, val & (~0x8));
1633 pci_read_config_word(dev, 0xF2, &val);
1635 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1638 pci_info(dev, "Enabled i801 SMBus device\n");
1641 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1642 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1643 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1644 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1645 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1646 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1647 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1648 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1649 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1650 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1651 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1652 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1653 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1654 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1656 /* It appears we just have one such device. If not, we have a warning */
1657 static void __iomem *asus_rcba_base;
1658 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1662 if (likely(!asus_hides_smbus))
1664 WARN_ON(asus_rcba_base);
1666 pci_read_config_dword(dev, 0xF0, &rcba);
1667 /* use bits 31:14, 16 kB aligned */
1668 asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000);
1669 if (asus_rcba_base == NULL)
1673 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1677 if (likely(!asus_hides_smbus || !asus_rcba_base))
1680 /* read the Function Disable register, dword mode only */
1681 val = readl(asus_rcba_base + 0x3418);
1683 /* enable the SMBus device */
1684 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418);
1687 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1689 if (likely(!asus_hides_smbus || !asus_rcba_base))
1692 iounmap(asus_rcba_base);
1693 asus_rcba_base = NULL;
1694 pci_info(dev, "Enabled ICH6/i801 SMBus device\n");
1697 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1699 asus_hides_smbus_lpc_ich6_suspend(dev);
1700 asus_hides_smbus_lpc_ich6_resume_early(dev);
1701 asus_hides_smbus_lpc_ich6_resume(dev);
1703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1704 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1705 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1706 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1708 /* SiS 96x south bridge: BIOS typically hides SMBus device... */
1709 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1712 pci_read_config_byte(dev, 0x77, &val);
1714 pci_info(dev, "Enabling SiS 96x SMBus\n");
1715 pci_write_config_byte(dev, 0x77, val & ~0x10);
1718 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1719 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1720 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1721 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1722 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1723 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1724 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1725 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1728 * ... This is further complicated by the fact that some SiS96x south
1729 * bridges pretend to be 85C503/5513 instead. In that case see if we
1730 * spotted a compatible north bridge to make sure.
1731 * (pci_find_device() doesn't work yet)
1733 * We can also enable the sis96x bit in the discovery register..
1735 #define SIS_DETECT_REGISTER 0x40
1737 static void quirk_sis_503(struct pci_dev *dev)
1742 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1743 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1744 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1745 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1746 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1751 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case
1752 * it has already been processed. (Depends on link order, which is
1753 * apparently not guaranteed)
1755 dev->device = devid;
1756 quirk_sis_96x_smbus(dev);
1758 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1759 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1762 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1763 * and MC97 modem controller are disabled when a second PCI soundcard is
1764 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1767 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1770 int asus_hides_ac97 = 0;
1772 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1773 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1774 asus_hides_ac97 = 1;
1777 if (!asus_hides_ac97)
1780 pci_read_config_byte(dev, 0x50, &val);
1782 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1783 pci_read_config_byte(dev, 0x50, &val);
1785 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1788 pci_info(dev, "Enabled onboard AC97/MC97 devices\n");
1791 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1792 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1794 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1797 * If we are using libata we can drive this chip properly but must do this
1798 * early on to make the additional device appear during the PCI scanning.
1800 static void quirk_jmicron_ata(struct pci_dev *pdev)
1802 u32 conf1, conf5, class;
1805 /* Only poke fn 0 */
1806 if (PCI_FUNC(pdev->devfn))
1809 pci_read_config_dword(pdev, 0x40, &conf1);
1810 pci_read_config_dword(pdev, 0x80, &conf5);
1812 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1813 conf5 &= ~(1 << 24); /* Clear bit 24 */
1815 switch (pdev->device) {
1816 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1817 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1818 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1819 /* The controller should be in single function ahci mode */
1820 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1823 case PCI_DEVICE_ID_JMICRON_JMB365:
1824 case PCI_DEVICE_ID_JMICRON_JMB366:
1825 /* Redirect IDE second PATA port to the right spot */
1828 case PCI_DEVICE_ID_JMICRON_JMB361:
1829 case PCI_DEVICE_ID_JMICRON_JMB363:
1830 case PCI_DEVICE_ID_JMICRON_JMB369:
1831 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1832 /* Set the class codes correctly and then direct IDE 0 */
1833 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1836 case PCI_DEVICE_ID_JMICRON_JMB368:
1837 /* The controller should be in single function IDE mode */
1838 conf1 |= 0x00C00000; /* Set 22, 23 */
1842 pci_write_config_dword(pdev, 0x40, conf1);
1843 pci_write_config_dword(pdev, 0x80, conf5);
1845 /* Update pdev accordingly */
1846 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1847 pdev->hdr_type = hdr & 0x7f;
1848 pdev->multifunction = !!(hdr & 0x80);
1850 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1851 pdev->class = class >> 8;
1853 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1854 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1855 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1856 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1857 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1858 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1859 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1860 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1861 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1862 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1863 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1864 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1865 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1866 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1867 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1868 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1869 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1870 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1874 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1876 if (dev->multifunction) {
1877 device_disable_async_suspend(&dev->dev);
1878 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1881 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1882 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1883 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1884 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1886 #ifdef CONFIG_X86_IO_APIC
1887 static void quirk_alder_ioapic(struct pci_dev *pdev)
1891 if ((pdev->class >> 8) != 0xff00)
1895 * The first BAR is the location of the IO-APIC... we must
1896 * not touch this (and it's already covered by the fixmap), so
1897 * forcibly insert it into the resource tree.
1899 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1900 insert_resource(&iomem_resource, &pdev->resource[0]);
1903 * The next five BARs all seem to be rubbish, so just clean
1906 for (i = 1; i < PCI_STD_NUM_BARS; i++)
1907 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1909 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1912 static void quirk_no_msi(struct pci_dev *dev)
1914 pci_info(dev, "avoiding MSI to work around a hardware defect\n");
1917 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4386, quirk_no_msi);
1918 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4387, quirk_no_msi);
1919 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4388, quirk_no_msi);
1920 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4389, quirk_no_msi);
1921 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438a, quirk_no_msi);
1922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438b, quirk_no_msi);
1924 static void quirk_pcie_mch(struct pci_dev *pdev)
1928 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1929 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1930 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1932 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1935 * HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
1936 * actually on the AMBA bus. These fake PCI devices can support SVA via
1937 * SMMU stall feature, by setting dma-can-stall for ACPI platforms.
1939 * Normally stalling must not be enabled for PCI devices, since it would
1940 * break the PCI requirement for free-flowing writes and may lead to
1941 * deadlock. We expect PCI devices to support ATS and PRI if they want to
1942 * be fault-tolerant, so there's no ACPI binding to describe anything else,
1943 * even when a "PCI" device turns out to be a regular old SoC device
1944 * dressed up as a RCiEP and normal rules don't apply.
1946 static void quirk_huawei_pcie_sva(struct pci_dev *pdev)
1948 struct property_entry properties[] = {
1949 PROPERTY_ENTRY_BOOL("dma-can-stall"),
1953 if (pdev->revision != 0x21 && pdev->revision != 0x30)
1956 pdev->pasid_no_tlp = 1;
1959 * Set the dma-can-stall property on ACPI platforms. Device tree
1960 * can set it directly.
1962 if (!pdev->dev.of_node &&
1963 device_create_managed_software_node(&pdev->dev, properties, NULL))
1964 pci_warn(pdev, "could not add stall property");
1966 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva);
1967 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva);
1968 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva);
1969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva);
1970 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva);
1971 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva);
1974 * It's possible for the MSI to get corrupted if SHPC and ACPI are used
1975 * together on certain PXH-based systems.
1977 static void quirk_pcie_pxh(struct pci_dev *dev)
1980 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n");
1982 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1983 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1984 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1985 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1986 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1989 * Some Intel PCI Express chipsets have trouble with downstream device
1992 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1994 pci_pm_d3hot_delay = 120;
1997 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1998 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1999 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
2000 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
2001 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
2002 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
2003 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
2004 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
2005 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
2006 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
2007 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
2008 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
2009 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
2010 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
2011 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
2012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
2013 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
2014 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
2015 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
2016 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
2017 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
2019 static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay)
2021 if (dev->d3hot_delay >= delay)
2024 dev->d3hot_delay = delay;
2025 pci_info(dev, "extending delay after power-on from D3hot to %d msec\n",
2029 static void quirk_radeon_pm(struct pci_dev *dev)
2031 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
2032 dev->subsystem_device == 0x00e2)
2033 quirk_d3hot_delay(dev, 20);
2035 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
2038 * NVIDIA Ampere-based HDA controllers can wedge the whole device if a bus
2039 * reset is performed too soon after transition to D0, extend d3hot_delay
2040 * to previous effective default for all NVIDIA HDA controllers.
2042 static void quirk_nvidia_hda_pm(struct pci_dev *dev)
2044 quirk_d3hot_delay(dev, 20);
2046 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
2047 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8,
2048 quirk_nvidia_hda_pm);
2051 * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle.
2052 * https://bugzilla.kernel.org/show_bug.cgi?id=205587
2054 * The kernel attempts to transition these devices to D3cold, but that seems
2055 * to be ineffective on the platforms in question; the PCI device appears to
2056 * remain on in D3hot state. The D3hot-to-D0 transition then requires an
2057 * extended delay in order to succeed.
2059 static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev)
2061 quirk_d3hot_delay(dev, 20);
2063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot);
2064 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot);
2065 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot);
2067 #ifdef CONFIG_X86_IO_APIC
2068 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
2070 noioapicreroute = 1;
2071 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
2076 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
2078 * Systems to exclude from boot interrupt reroute quirks
2081 .callback = dmi_disable_ioapicreroute,
2082 .ident = "ASUSTek Computer INC. M2N-LR",
2084 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
2085 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
2092 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
2093 * remap the original interrupt in the Linux kernel to the boot interrupt, so
2094 * that a PCI device's interrupt handler is installed on the boot interrupt
2097 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
2099 dmi_check_system(boot_interrupt_dmi_table);
2100 if (noioapicquirk || noioapicreroute)
2103 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
2104 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n",
2105 dev->vendor, dev->device);
2107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
2108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
2109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2110 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2111 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2114 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2115 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
2116 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
2117 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2118 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2119 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2120 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2121 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2122 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2125 * On some chipsets we can disable the generation of legacy INTx boot
2130 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no
2131 * 300641-004US, section 5.7.3.
2133 * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003.
2134 * Core IO on Xeon E5 v2, see Intel order no 329188-003.
2135 * Core IO on Xeon E7 v2, see Intel order no 329595-002.
2136 * Core IO on Xeon E5 v3, see Intel order no 330784-003.
2137 * Core IO on Xeon E7 v3, see Intel order no 332315-001US.
2138 * Core IO on Xeon E5 v4, see Intel order no 333810-002US.
2139 * Core IO on Xeon E7 v4, see Intel order no 332315-001US.
2140 * Core IO on Xeon D-1500, see Intel order no 332051-001.
2141 * Core IO on Xeon Scalable, see Intel order no 610950.
2143 #define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */
2144 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
2146 #define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */
2147 #define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25)
2149 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
2151 u16 pci_config_word;
2152 u32 pci_config_dword;
2157 switch (dev->device) {
2158 case PCI_DEVICE_ID_INTEL_ESB_10:
2159 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2161 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
2162 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2165 case 0x3c28: /* Xeon E5 1600/2600/4600 */
2166 case 0x0e28: /* Xeon E5/E7 V2 */
2167 case 0x2f28: /* Xeon E5/E7 V3,V4 */
2168 case 0x6f28: /* Xeon D-1500 */
2169 case 0x2034: /* Xeon Scalable Family */
2170 pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2172 pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH;
2173 pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2179 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2180 dev->vendor, dev->device);
2183 * Device 29 Func 5 Device IDs of IO-APIC
2184 * containing ABAR—APIC1 Alternate Base Address Register
2186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2187 quirk_disable_intel_boot_interrupt);
2188 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2189 quirk_disable_intel_boot_interrupt);
2192 * Device 5 Func 0 Device IDs of Core IO modules/hubs
2193 * containing Coherent Interface Protocol Interrupt Control
2195 * Device IDs obtained from volume 2 datasheets of commented
2198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28,
2199 quirk_disable_intel_boot_interrupt);
2200 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28,
2201 quirk_disable_intel_boot_interrupt);
2202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28,
2203 quirk_disable_intel_boot_interrupt);
2204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28,
2205 quirk_disable_intel_boot_interrupt);
2206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034,
2207 quirk_disable_intel_boot_interrupt);
2208 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28,
2209 quirk_disable_intel_boot_interrupt);
2210 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28,
2211 quirk_disable_intel_boot_interrupt);
2212 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28,
2213 quirk_disable_intel_boot_interrupt);
2214 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28,
2215 quirk_disable_intel_boot_interrupt);
2216 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034,
2217 quirk_disable_intel_boot_interrupt);
2219 /* Disable boot interrupts on HT-1000 */
2220 #define BC_HT1000_FEATURE_REG 0x64
2221 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
2222 #define BC_HT1000_MAP_IDX 0xC00
2223 #define BC_HT1000_MAP_DATA 0xC01
2225 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
2227 u32 pci_config_dword;
2233 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
2234 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
2235 BC_HT1000_PIC_REGS_ENABLE);
2237 for (irq = 0x10; irq < 0x10 + 32; irq++) {
2238 outb(irq, BC_HT1000_MAP_IDX);
2239 outb(0x00, BC_HT1000_MAP_DATA);
2242 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
2244 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2245 dev->vendor, dev->device);
2247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2248 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2250 /* Disable boot interrupts on AMD and ATI chipsets */
2253 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
2254 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
2255 * (due to an erratum).
2257 #define AMD_813X_MISC 0x40
2258 #define AMD_813X_NOIOAMODE (1<<0)
2259 #define AMD_813X_REV_B1 0x12
2260 #define AMD_813X_REV_B2 0x13
2262 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
2264 u32 pci_config_dword;
2268 if ((dev->revision == AMD_813X_REV_B1) ||
2269 (dev->revision == AMD_813X_REV_B2))
2272 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
2273 pci_config_dword &= ~AMD_813X_NOIOAMODE;
2274 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
2276 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2277 dev->vendor, dev->device);
2279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2280 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2282 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2284 #define AMD_8111_PCI_IRQ_ROUTING 0x56
2286 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
2288 u16 pci_config_word;
2293 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
2294 if (!pci_config_word) {
2295 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n",
2296 dev->vendor, dev->device);
2299 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
2300 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2301 dev->vendor, dev->device);
2303 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2304 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2305 #endif /* CONFIG_X86_IO_APIC */
2308 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
2309 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
2310 * Re-allocate the region if needed...
2312 static void quirk_tc86c001_ide(struct pci_dev *dev)
2314 struct resource *r = &dev->resource[0];
2316 if (r->start & 0x8) {
2317 r->flags |= IORESOURCE_UNSET;
2322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
2323 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
2324 quirk_tc86c001_ide);
2327 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the
2328 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
2329 * being read correctly if bit 7 of the base address is set.
2330 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
2331 * Re-allocate the regions to a 256-byte boundary if necessary.
2333 static void quirk_plx_pci9050(struct pci_dev *dev)
2337 /* Fixed in revision 2 (PCI 9052). */
2338 if (dev->revision >= 2)
2340 for (bar = 0; bar <= 1; bar++)
2341 if (pci_resource_len(dev, bar) == 0x80 &&
2342 (pci_resource_start(dev, bar) & 0x80)) {
2343 struct resource *r = &dev->resource[bar];
2344 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
2346 r->flags |= IORESOURCE_UNSET;
2351 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2354 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
2355 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
2356 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
2357 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
2359 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
2362 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
2363 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
2365 static void quirk_netmos(struct pci_dev *dev)
2367 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
2368 unsigned int num_serial = dev->subsystem_device & 0xf;
2371 * These Netmos parts are multiport serial devices with optional
2372 * parallel ports. Even when parallel ports are present, they
2373 * are identified as class SERIAL, which means the serial driver
2374 * will claim them. To prevent this, mark them as class OTHER.
2375 * These combo devices should be claimed by parport_serial.
2377 * The subdevice ID is of the form 0x00PS, where <P> is the number
2378 * of parallel ports and <S> is the number of serial ports.
2380 switch (dev->device) {
2381 case PCI_DEVICE_ID_NETMOS_9835:
2382 /* Well, this rule doesn't hold for the following 9835 device */
2383 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
2384 dev->subsystem_device == 0x0299)
2387 case PCI_DEVICE_ID_NETMOS_9735:
2388 case PCI_DEVICE_ID_NETMOS_9745:
2389 case PCI_DEVICE_ID_NETMOS_9845:
2390 case PCI_DEVICE_ID_NETMOS_9855:
2392 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
2393 dev->device, num_parallel, num_serial);
2394 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
2395 (dev->class & 0xff);
2399 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
2400 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
2402 static void quirk_e100_interrupt(struct pci_dev *dev)
2408 switch (dev->device) {
2409 /* PCI IDs taken from drivers/net/e100.c */
2411 case 0x1030 ... 0x1034:
2412 case 0x1038 ... 0x103E:
2413 case 0x1050 ... 0x1057:
2415 case 0x1064 ... 0x106B:
2416 case 0x1091 ... 0x1095:
2429 * Some firmware hands off the e100 with interrupts enabled,
2430 * which can cause a flood of interrupts if packets are
2431 * received before the driver attaches to the device. So
2432 * disable all e100 interrupts here. The driver will
2433 * re-enable them when it's ready.
2435 pci_read_config_word(dev, PCI_COMMAND, &command);
2437 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2441 * Check that the device is in the D0 power state. If it's not,
2442 * there is no point to look any further.
2445 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2446 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2450 /* Convert from PCI bus to resource space. */
2451 csr = ioremap(pci_resource_start(dev, 0), 8);
2453 pci_warn(dev, "Can't map e100 registers\n");
2457 cmd_hi = readb(csr + 3);
2459 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n");
2465 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2466 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2469 * The 82575 and 82598 may experience data corruption issues when transitioning
2470 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2472 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2474 pci_info(dev, "Disabling L0s\n");
2475 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2477 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2478 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2479 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2480 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2481 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2482 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2483 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2484 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2485 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2486 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2487 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2488 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2489 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2490 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2492 static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
2494 pci_info(dev, "Disabling ASPM L0s/L1\n");
2495 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
2499 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
2500 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
2501 * disable both L0s and L1 for now to be safe.
2503 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
2506 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2507 * Link bit cleared after starting the link retrain process to allow this
2508 * process to finish.
2510 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2511 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2513 static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2515 dev->clear_retrain_link = 1;
2516 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2518 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link);
2519 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link);
2520 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link);
2522 static void fixup_rev1_53c810(struct pci_dev *dev)
2524 u32 class = dev->class;
2527 * rev 1 ncr53c810 chips don't set the class at all which means
2528 * they don't get their resources remapped. Fix that here.
2533 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2534 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2537 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2539 /* Enable 1k I/O space granularity on the Intel P64H2 */
2540 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2544 pci_read_config_word(dev, 0x40, &en1k);
2547 pci_info(dev, "Enable I/O Space to 1KB granularity\n");
2548 dev->io_window_1k = 1;
2551 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2554 * Under some circumstances, AER is not linked with extended capabilities.
2555 * Force it to be linked by setting the corresponding control bit in the
2558 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2562 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2564 pci_write_config_byte(dev, 0xf41, b | 0x20);
2565 pci_info(dev, "Linking AER extended capability\n");
2569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2570 quirk_nvidia_ck804_pcie_aer_ext_cap);
2571 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2572 quirk_nvidia_ck804_pcie_aer_ext_cap);
2574 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2577 * Disable PCI Bus Parking and PCI Master read caching on CX700
2578 * which causes unspecified timing errors with a VT6212L on the PCI
2579 * bus leading to USB2.0 packet loss.
2581 * This quirk is only enabled if a second (on the external PCI bus)
2582 * VT6212L is found -- the CX700 core itself also contains a USB
2583 * host controller with the same PCI ID as the VT6212L.
2586 /* Count VT6212L instances */
2587 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2588 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2592 * p should contain the first (internal) VT6212L -- see if we have
2593 * an external one by searching again.
2595 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2600 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2602 /* Turn off PCI Bus Parking */
2603 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2605 pci_info(dev, "Disabling VIA CX700 PCI parking\n");
2609 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2611 /* Turn off PCI Master read caching */
2612 pci_write_config_byte(dev, 0x72, 0x0);
2614 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2615 pci_write_config_byte(dev, 0x75, 0x1);
2617 /* Disable "Read FIFO Timer" */
2618 pci_write_config_byte(dev, 0x77, 0x0);
2620 pci_info(dev, "Disabling VIA CX700 PCI caching\n");
2624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2626 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2630 pci_read_config_dword(dev, 0xf4, &rev);
2632 /* Only CAP the MRRS if the device is a 5719 A0 */
2633 if (rev == 0x05719000) {
2634 int readrq = pcie_get_readrq(dev);
2636 pcie_set_readrq(dev, 2048);
2639 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2640 PCI_DEVICE_ID_TIGON3_5719,
2641 quirk_brcm_5719_limit_mrrs);
2644 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to
2645 * hide device 6 which configures the overflow device access containing the
2646 * DRBs - this is where we expose device 6.
2647 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2649 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2653 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2654 pci_info(dev, "Enabling MCH 'Overflow' Device\n");
2655 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2658 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2659 quirk_unhide_mch_dev6);
2660 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2661 quirk_unhide_mch_dev6);
2663 #ifdef CONFIG_PCI_MSI
2665 * Some chipsets do not support MSI. We cannot easily rely on setting
2666 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some
2667 * other buses controlled by the chipset even if Linux is not aware of it.
2668 * Instead of setting the flag on all buses in the machine, simply disable
2671 static void quirk_disable_all_msi(struct pci_dev *dev)
2674 pci_warn(dev, "MSI quirk detected; MSI disabled\n");
2676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2678 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2679 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2680 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi);
2686 /* Disable MSI on chipsets that are known to not support it */
2687 static void quirk_disable_msi(struct pci_dev *dev)
2689 if (dev->subordinate) {
2690 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2691 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2694 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2695 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2696 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2699 * The APC bridge device in AMD 780 family northbridges has some random
2700 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2701 * we use the possible vendor/device IDs of the host bridge for the
2702 * declared quirk, and search for the APC bridge by slot number.
2704 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2706 struct pci_dev *apc_bridge;
2708 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2710 if (apc_bridge->device == 0x9602)
2711 quirk_disable_msi(apc_bridge);
2712 pci_dev_put(apc_bridge);
2715 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2716 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2719 * Go through the list of HyperTransport capabilities and return 1 if a HT
2720 * MSI capability is found and enabled.
2722 static int msi_ht_cap_enabled(struct pci_dev *dev)
2724 int pos, ttl = PCI_FIND_CAP_TTL;
2726 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2727 while (pos && ttl--) {
2730 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2732 pci_info(dev, "Found %s HT MSI Mapping\n",
2733 flags & HT_MSI_FLAGS_ENABLE ?
2734 "enabled" : "disabled");
2735 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2738 pos = pci_find_next_ht_capability(dev, pos,
2739 HT_CAPTYPE_MSI_MAPPING);
2744 /* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */
2745 static void quirk_msi_ht_cap(struct pci_dev *dev)
2747 if (!msi_ht_cap_enabled(dev))
2748 quirk_disable_msi(dev);
2750 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2754 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported
2755 * if the MSI capability is set in any of these mappings.
2757 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2759 struct pci_dev *pdev;
2762 * Check HT MSI cap on this chipset and the root one. A single one
2763 * having MSI is enough to be sure that MSI is supported.
2765 pdev = pci_get_slot(dev->bus, 0);
2768 if (!msi_ht_cap_enabled(pdev))
2769 quirk_msi_ht_cap(dev);
2772 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2773 quirk_nvidia_ck804_msi_ht_cap);
2775 /* Force enable MSI mapping capability on HT bridges */
2776 static void ht_enable_msi_mapping(struct pci_dev *dev)
2778 int pos, ttl = PCI_FIND_CAP_TTL;
2780 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2781 while (pos && ttl--) {
2784 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2786 pci_info(dev, "Enabling HT MSI Mapping\n");
2788 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2789 flags | HT_MSI_FLAGS_ENABLE);
2791 pos = pci_find_next_ht_capability(dev, pos,
2792 HT_CAPTYPE_MSI_MAPPING);
2795 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2796 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2797 ht_enable_msi_mapping);
2798 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2799 ht_enable_msi_mapping);
2802 * The P5N32-SLI motherboards from Asus have a problem with MSI
2803 * for the MCP55 NIC. It is not yet determined whether the MSI problem
2804 * also affects other devices. As for now, turn off MSI for this device.
2806 static void nvenet_msi_disable(struct pci_dev *dev)
2808 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2811 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2812 strstr(board_name, "P5N32-E SLI"))) {
2813 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n");
2817 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2818 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2819 nvenet_msi_disable);
2822 * PCIe spec r6.0 sec 6.1.4.3 says that if MSI/MSI-X is enabled, the device
2823 * can't use INTx interrupts. Tegra's PCIe Root Ports don't generate MSI
2824 * interrupts for PME and AER events; instead only INTx interrupts are
2825 * generated. Though Tegra's PCIe Root Ports can generate MSI interrupts
2826 * for other events, since PCIe specification doesn't support using a mix of
2827 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port
2828 * service drivers registering their respective ISRs for MSIs.
2830 static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev)
2834 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0,
2835 PCI_CLASS_BRIDGE_PCI, 8,
2836 pci_quirk_nvidia_tegra_disable_rp_msi);
2837 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1,
2838 PCI_CLASS_BRIDGE_PCI, 8,
2839 pci_quirk_nvidia_tegra_disable_rp_msi);
2840 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2,
2841 PCI_CLASS_BRIDGE_PCI, 8,
2842 pci_quirk_nvidia_tegra_disable_rp_msi);
2843 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0,
2844 PCI_CLASS_BRIDGE_PCI, 8,
2845 pci_quirk_nvidia_tegra_disable_rp_msi);
2846 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1,
2847 PCI_CLASS_BRIDGE_PCI, 8,
2848 pci_quirk_nvidia_tegra_disable_rp_msi);
2849 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c,
2850 PCI_CLASS_BRIDGE_PCI, 8,
2851 pci_quirk_nvidia_tegra_disable_rp_msi);
2852 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d,
2853 PCI_CLASS_BRIDGE_PCI, 8,
2854 pci_quirk_nvidia_tegra_disable_rp_msi);
2855 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12,
2856 PCI_CLASS_BRIDGE_PCI, 8,
2857 pci_quirk_nvidia_tegra_disable_rp_msi);
2858 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13,
2859 PCI_CLASS_BRIDGE_PCI, 8,
2860 pci_quirk_nvidia_tegra_disable_rp_msi);
2861 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae,
2862 PCI_CLASS_BRIDGE_PCI, 8,
2863 pci_quirk_nvidia_tegra_disable_rp_msi);
2864 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf,
2865 PCI_CLASS_BRIDGE_PCI, 8,
2866 pci_quirk_nvidia_tegra_disable_rp_msi);
2867 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5,
2868 PCI_CLASS_BRIDGE_PCI, 8,
2869 pci_quirk_nvidia_tegra_disable_rp_msi);
2870 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6,
2871 PCI_CLASS_BRIDGE_PCI, 8,
2872 pci_quirk_nvidia_tegra_disable_rp_msi);
2873 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229a,
2874 PCI_CLASS_BRIDGE_PCI, 8,
2875 pci_quirk_nvidia_tegra_disable_rp_msi);
2876 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229c,
2877 PCI_CLASS_BRIDGE_PCI, 8,
2878 pci_quirk_nvidia_tegra_disable_rp_msi);
2879 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229e,
2880 PCI_CLASS_BRIDGE_PCI, 8,
2881 pci_quirk_nvidia_tegra_disable_rp_msi);
2884 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2885 * config register. This register controls the routing of legacy
2886 * interrupts from devices that route through the MCP55. If this register
2887 * is misprogrammed, interrupts are only sent to the BSP, unlike
2888 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2889 * having this register set properly prevents kdump from booting up
2890 * properly, so let's make sure that we have it set correctly.
2891 * Note that this is an undocumented register.
2893 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2897 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2900 pci_read_config_dword(dev, 0x74, &cfg);
2902 if (cfg & ((1 << 2) | (1 << 15))) {
2903 pr_info("Rewriting IRQ routing register on MCP55\n");
2904 cfg &= ~((1 << 2) | (1 << 15));
2905 pci_write_config_dword(dev, 0x74, cfg);
2908 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2909 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2910 nvbridge_check_legacy_irq_routing);
2911 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2912 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2913 nvbridge_check_legacy_irq_routing);
2915 static int ht_check_msi_mapping(struct pci_dev *dev)
2917 int pos, ttl = PCI_FIND_CAP_TTL;
2920 /* Check if there is HT MSI cap or enabled on this device */
2921 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2922 while (pos && ttl--) {
2927 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2929 if (flags & HT_MSI_FLAGS_ENABLE) {
2936 pos = pci_find_next_ht_capability(dev, pos,
2937 HT_CAPTYPE_MSI_MAPPING);
2943 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2945 struct pci_dev *dev;
2950 dev_no = host_bridge->devfn >> 3;
2951 for (i = dev_no + 1; i < 0x20; i++) {
2952 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2956 /* found next host bridge? */
2957 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2963 if (ht_check_msi_mapping(dev)) {
2974 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2975 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2977 static int is_end_of_ht_chain(struct pci_dev *dev)
2983 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2988 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2990 ctrl_off = ((flags >> 10) & 1) ?
2991 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2992 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2994 if (ctrl & (1 << 6))
3001 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
3003 struct pci_dev *host_bridge;
3008 dev_no = dev->devfn >> 3;
3009 for (i = dev_no; i >= 0; i--) {
3010 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
3014 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
3019 pci_dev_put(host_bridge);
3025 /* don't enable end_device/host_bridge with leaf directly here */
3026 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
3027 host_bridge_with_leaf(host_bridge))
3030 /* root did that ! */
3031 if (msi_ht_cap_enabled(host_bridge))
3034 ht_enable_msi_mapping(dev);
3037 pci_dev_put(host_bridge);
3040 static void ht_disable_msi_mapping(struct pci_dev *dev)
3042 int pos, ttl = PCI_FIND_CAP_TTL;
3044 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
3045 while (pos && ttl--) {
3048 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
3050 pci_info(dev, "Disabling HT MSI Mapping\n");
3052 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
3053 flags & ~HT_MSI_FLAGS_ENABLE);
3055 pos = pci_find_next_ht_capability(dev, pos,
3056 HT_CAPTYPE_MSI_MAPPING);
3060 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
3062 struct pci_dev *host_bridge;
3066 if (!pci_msi_enabled())
3069 /* check if there is HT MSI cap or enabled on this device */
3070 found = ht_check_msi_mapping(dev);
3077 * HT MSI mapping should be disabled on devices that are below
3078 * a non-HyperTransport host bridge. Locate the host bridge.
3080 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
3082 if (host_bridge == NULL) {
3083 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
3087 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
3089 /* Host bridge is to HT */
3091 /* it is not enabled, try to enable it */
3093 ht_enable_msi_mapping(dev);
3095 nv_ht_enable_msi_mapping(dev);
3100 /* HT MSI is not enabled */
3104 /* Host bridge is not to HT, disable HT MSI mapping on this device */
3105 ht_disable_msi_mapping(dev);
3108 pci_dev_put(host_bridge);
3111 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
3113 return __nv_msi_ht_cap_quirk(dev, 1);
3115 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
3116 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
3118 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
3120 return __nv_msi_ht_cap_quirk(dev, 0);
3122 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3123 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3125 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
3127 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3130 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
3135 * SB700 MSI issue will be fixed at HW level from revision A21;
3136 * we need check PCI REVISION ID of SMBus controller to get SB700
3139 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
3144 if ((p->revision < 0x3B) && (p->revision >= 0x30))
3145 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3149 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
3151 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
3152 if (dev->revision < 0x18) {
3153 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n");
3154 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3158 PCI_DEVICE_ID_TIGON3_5780,
3159 quirk_msi_intx_disable_bug);
3160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3161 PCI_DEVICE_ID_TIGON3_5780S,
3162 quirk_msi_intx_disable_bug);
3163 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3164 PCI_DEVICE_ID_TIGON3_5714,
3165 quirk_msi_intx_disable_bug);
3166 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3167 PCI_DEVICE_ID_TIGON3_5714S,
3168 quirk_msi_intx_disable_bug);
3169 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3170 PCI_DEVICE_ID_TIGON3_5715,
3171 quirk_msi_intx_disable_bug);
3172 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3173 PCI_DEVICE_ID_TIGON3_5715S,
3174 quirk_msi_intx_disable_bug);
3176 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
3177 quirk_msi_intx_disable_ati_bug);
3178 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
3179 quirk_msi_intx_disable_ati_bug);
3180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
3181 quirk_msi_intx_disable_ati_bug);
3182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
3183 quirk_msi_intx_disable_ati_bug);
3184 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
3185 quirk_msi_intx_disable_ati_bug);
3187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
3188 quirk_msi_intx_disable_bug);
3189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
3190 quirk_msi_intx_disable_bug);
3191 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
3192 quirk_msi_intx_disable_bug);
3194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
3195 quirk_msi_intx_disable_bug);
3196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
3197 quirk_msi_intx_disable_bug);
3198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
3199 quirk_msi_intx_disable_bug);
3200 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
3201 quirk_msi_intx_disable_bug);
3202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
3203 quirk_msi_intx_disable_bug);
3204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
3205 quirk_msi_intx_disable_bug);
3206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
3207 quirk_msi_intx_disable_qca_bug);
3208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
3209 quirk_msi_intx_disable_qca_bug);
3210 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
3211 quirk_msi_intx_disable_qca_bug);
3212 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
3213 quirk_msi_intx_disable_qca_bug);
3214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
3215 quirk_msi_intx_disable_qca_bug);
3218 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it
3219 * should be disabled on platforms where the device (mistakenly) advertises it.
3221 * Notice that this quirk also disables MSI (which may work, but hasn't been
3222 * tested), since currently there is no standard way to disable only MSI-X.
3224 * The 0031 device id is reused for other non Root Port device types,
3225 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
3227 static void quirk_al_msi_disable(struct pci_dev *dev)
3230 pci_warn(dev, "Disabling MSI/MSI-X\n");
3232 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
3233 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable);
3234 #endif /* CONFIG_PCI_MSI */
3237 * Allow manual resource allocation for PCI hotplug bridges via
3238 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI
3239 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to
3240 * allocate resources when hotplug device is inserted and PCI bus is
3243 static void quirk_hotplug_bridge(struct pci_dev *dev)
3245 dev->is_hotplug_bridge = 1;
3247 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
3250 * This is a quirk for the Ricoh MMC controller found as a part of some
3251 * multifunction chips.
3253 * This is very similar and based on the ricoh_mmc driver written by
3254 * Philip Langdale. Thank you for these magic sequences.
3256 * These chips implement the four main memory card controllers (SD, MMC,
3257 * MS, xD) and one or both of CardBus or FireWire.
3259 * It happens that they implement SD and MMC support as separate
3260 * controllers (and PCI functions). The Linux SDHCI driver supports MMC
3261 * cards but the chip detects MMC cards in hardware and directs them to the
3262 * MMC controller - so the SDHCI driver never sees them.
3264 * To get around this, we must disable the useless MMC controller. At that
3265 * point, the SDHCI controller will start seeing them. It seems to be the
3266 * case that the relevant PCI registers to deactivate the MMC controller
3267 * live on PCI function 0, which might be the CardBus controller or the
3268 * FireWire controller, depending on the particular chip in question
3270 * This has to be done early, because as soon as we disable the MMC controller
3271 * other PCI functions shift up one level, e.g. function #2 becomes function
3272 * #1, and this will confuse the PCI core.
3274 #ifdef CONFIG_MMC_RICOH_MMC
3275 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
3282 * Disable via CardBus interface
3284 * This must be done via function #0
3286 if (PCI_FUNC(dev->devfn))
3289 pci_read_config_byte(dev, 0xB7, &disable);
3293 pci_read_config_byte(dev, 0x8E, &write_enable);
3294 pci_write_config_byte(dev, 0x8E, 0xAA);
3295 pci_read_config_byte(dev, 0x8D, &write_target);
3296 pci_write_config_byte(dev, 0x8D, 0xB7);
3297 pci_write_config_byte(dev, 0xB7, disable | 0x02);
3298 pci_write_config_byte(dev, 0x8E, write_enable);
3299 pci_write_config_byte(dev, 0x8D, write_target);
3301 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n");
3302 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3304 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3305 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3307 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
3313 * Disable via FireWire interface
3315 * This must be done via function #0
3317 if (PCI_FUNC(dev->devfn))
3320 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
3321 * certain types of SD/MMC cards. Lowering the SD base clock
3322 * frequency from 200Mhz to 50Mhz fixes this issue.
3324 * 0x150 - SD2.0 mode enable for changing base clock
3325 * frequency to 50Mhz
3326 * 0xe1 - Base clock frequency
3327 * 0x32 - 50Mhz new clock frequency
3328 * 0xf9 - Key register for 0x150
3329 * 0xfc - key register for 0xe1
3331 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
3332 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
3333 pci_write_config_byte(dev, 0xf9, 0xfc);
3334 pci_write_config_byte(dev, 0x150, 0x10);
3335 pci_write_config_byte(dev, 0xf9, 0x00);
3336 pci_write_config_byte(dev, 0xfc, 0x01);
3337 pci_write_config_byte(dev, 0xe1, 0x32);
3338 pci_write_config_byte(dev, 0xfc, 0x00);
3340 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n");
3343 pci_read_config_byte(dev, 0xCB, &disable);
3348 pci_read_config_byte(dev, 0xCA, &write_enable);
3349 pci_write_config_byte(dev, 0xCA, 0x57);
3350 pci_write_config_byte(dev, 0xCB, disable | 0x02);
3351 pci_write_config_byte(dev, 0xCA, write_enable);
3353 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n");
3354 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3357 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3358 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3359 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3360 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3361 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3362 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3363 #endif /*CONFIG_MMC_RICOH_MMC*/
3365 #ifdef CONFIG_DMAR_TABLE
3366 #define VTUNCERRMSK_REG 0x1ac
3367 #define VTD_MSK_SPEC_ERRORS (1 << 31)
3369 * This is a quirk for masking VT-d spec-defined errors to platform error
3370 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets
3371 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3372 * on the RAS config settings of the platform) when a VT-d fault happens.
3373 * The resulting SMI caused the system to hang.
3375 * VT-d spec-related errors are already handled by the VT-d OS code, so no
3376 * need to report the same error through other channels.
3378 static void vtd_mask_spec_errors(struct pci_dev *dev)
3382 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3383 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3385 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3386 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3389 static void fixup_ti816x_class(struct pci_dev *dev)
3391 u32 class = dev->class;
3393 /* TI 816x devices do not have class code set when in PCIe boot mode */
3394 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3395 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n",
3398 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3399 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3402 * Some PCIe devices do not work reliably with the claimed maximum
3403 * payload size supported.
3405 static void fixup_mpss_256(struct pci_dev *dev)
3407 dev->pcie_mpss = 1; /* 256 bytes */
3409 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3410 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3411 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3412 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3413 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3414 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3415 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256);
3418 * Intel 5000 and 5100 Memory controllers have an erratum with read completion
3419 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3420 * Since there is no way of knowing what the PCIe MPS on each fabric will be
3421 * until all of the devices are discovered and buses walked, read completion
3422 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3423 * it is possible to hotplug a device with MPS of 256B.
3425 static void quirk_intel_mc_errata(struct pci_dev *dev)
3430 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3431 pcie_bus_config == PCIE_BUS_DEFAULT)
3435 * Intel erratum specifies bits to change but does not say what
3436 * they are. Keeping them magical until such time as the registers
3437 * and values can be explained.
3439 err = pci_read_config_word(dev, 0x48, &rcc);
3441 pci_err(dev, "Error attempting to read the read completion coalescing register\n");
3445 if (!(rcc & (1 << 10)))
3450 err = pci_write_config_word(dev, 0x48, rcc);
3452 pci_err(dev, "Error attempting to write the read completion coalescing register\n");
3456 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n");
3458 /* Intel 5000 series memory controllers and ports 2-7 */
3459 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3460 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3461 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3462 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3463 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3464 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3468 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3469 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3470 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3471 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3472 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3473 /* Intel 5100 series memory controllers and ports 2-7 */
3474 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3475 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3476 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3477 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3478 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3479 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3480 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3481 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3482 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3483 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3484 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3487 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.
3488 * To work around this, query the size it should be configured to by the
3489 * device and modify the resource end to correspond to this new size.
3491 static void quirk_intel_ntb(struct pci_dev *dev)
3496 rc = pci_read_config_byte(dev, 0x00D0, &val);
3500 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3502 rc = pci_read_config_byte(dev, 0x00D1, &val);
3506 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3512 * Some BIOS implementations leave the Intel GPU interrupts enabled, even
3513 * though no one is handling them (e.g., if the i915 driver is never
3514 * loaded). Additionally the interrupt destination is not set up properly
3515 * and the interrupt ends up -somewhere-.
3517 * These spurious interrupts are "sticky" and the kernel disables the
3518 * (shared) interrupt line after 100,000+ generated interrupts.
3520 * Fix it by disabling the still enabled interrupts. This resolves crashes
3521 * often seen on monitor unplug.
3523 #define I915_DEIER_REG 0x4400c
3524 static void disable_igfx_irq(struct pci_dev *dev)
3526 void __iomem *regs = pci_iomap(dev, 0, 0);
3528 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n");
3532 /* Check if any interrupt line is still enabled */
3533 if (readl(regs + I915_DEIER_REG) != 0) {
3534 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3536 writel(0, regs + I915_DEIER_REG);
3539 pci_iounmap(dev, regs);
3541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3544 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3546 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3550 * PCI devices which are on Intel chips can skip the 10ms delay
3551 * before entering D3 mode.
3553 static void quirk_remove_d3hot_delay(struct pci_dev *dev)
3555 dev->d3hot_delay = 0;
3557 /* C600 Series devices do not need 10ms d3hot_delay */
3558 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay);
3559 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay);
3560 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay);
3561 /* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */
3562 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay);
3563 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay);
3564 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay);
3565 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay);
3566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay);
3567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay);
3568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay);
3569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay);
3570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay);
3571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay);
3572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay);
3573 /* Intel Cherrytrail devices do not need 10ms d3hot_delay */
3574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay);
3575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay);
3576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay);
3577 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay);
3578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay);
3579 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay);
3580 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay);
3581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay);
3582 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay);
3585 * Some devices may pass our check in pci_intx_mask_supported() if
3586 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3587 * support this feature.
3589 static void quirk_broken_intx_masking(struct pci_dev *dev)
3591 dev->broken_intx_masking = 1;
3593 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3594 quirk_broken_intx_masking);
3595 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3596 quirk_broken_intx_masking);
3597 DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */
3598 quirk_broken_intx_masking);
3601 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3602 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3604 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3607 quirk_broken_intx_masking);
3610 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3611 * DisINTx can be set but the interrupt status bit is non-functional.
3613 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking);
3614 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking);
3615 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking);
3616 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking);
3617 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking);
3618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking);
3619 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking);
3620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking);
3621 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking);
3622 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking);
3623 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking);
3624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking);
3625 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking);
3626 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking);
3627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking);
3628 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking);
3630 static u16 mellanox_broken_intx_devs[] = {
3631 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3632 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3633 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3634 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3635 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3636 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3637 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3638 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3639 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3640 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3641 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3642 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3643 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3644 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3647 #define CONNECTX_4_CURR_MAX_MINOR 99
3648 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3651 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3652 * If so, don't mark it as broken.
3653 * FW minor > 99 means older FW version format and no INTx masking support.
3654 * FW minor < 14 means new FW version format and no INTx masking support.
3656 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3658 __be32 __iomem *fw_ver;
3666 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3667 if (pdev->device == mellanox_broken_intx_devs[i]) {
3668 pdev->broken_intx_masking = 1;
3674 * Getting here means Connect-IB cards and up. Connect-IB has no INTx
3675 * support so shouldn't be checked further
3677 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3680 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3681 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3684 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3685 if (pci_enable_device_mem(pdev)) {
3686 pci_warn(pdev, "Can't enable device memory\n");
3690 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3692 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n");
3696 /* Reading from resource space should be 32b aligned */
3697 fw_maj_min = ioread32be(fw_ver);
3698 fw_sub_min = ioread32be(fw_ver + 1);
3699 fw_major = fw_maj_min & 0xffff;
3700 fw_minor = fw_maj_min >> 16;
3701 fw_subminor = fw_sub_min & 0xffff;
3702 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3703 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3704 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",
3705 fw_major, fw_minor, fw_subminor, pdev->device ==
3706 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3707 pdev->broken_intx_masking = 1;
3713 pci_disable_device(pdev);
3715 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3716 mellanox_check_broken_intx_masking);
3718 static void quirk_no_bus_reset(struct pci_dev *dev)
3720 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3724 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
3725 * prevented for those affected devices.
3727 static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
3729 if ((dev->device & 0xffc0) == 0x2340)
3730 quirk_no_bus_reset(dev);
3732 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
3733 quirk_nvidia_no_bus_reset);
3736 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3737 * The device will throw a Link Down error on AER-capable systems and
3738 * regardless of AER, config space of the device is never accessible again
3739 * and typically causes the system to hang or reset when access is attempted.
3740 * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/
3742 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3743 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3744 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3745 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3746 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3747 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset);
3750 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3751 * reset when used with certain child devices. After the reset, config
3752 * accesses to the child may fail.
3754 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
3757 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
3758 * automatically disables LTSSM when Secondary Bus Reset is received and
3759 * the device stops working. Prevent bus reset for these devices. With
3760 * this change, the device can be assigned to VMs with VFIO, but it will
3761 * leak state between VMs. Reference
3762 * https://e2e.ti.com/support/processors/f/791/t/954382
3764 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
3766 static void quirk_no_pm_reset(struct pci_dev *dev)
3769 * We can't do a bus reset on root bus devices, but an ineffective
3770 * PM reset may be better than nothing.
3772 if (!pci_is_root_bus(dev->bus))
3773 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3777 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3778 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3779 * to have no effect on the device: it retains the framebuffer contents and
3780 * monitor sync. Advertising this support makes other layers, like VFIO,
3781 * assume pci_reset_function() is viable for this device. Mark it as
3782 * unavailable to skip it when testing reset methods.
3784 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3785 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3788 * Thunderbolt controllers with broken MSI hotplug signaling:
3789 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3790 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3792 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3794 if (pdev->is_hotplug_bridge &&
3795 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3796 pdev->revision <= 1))
3799 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3800 quirk_thunderbolt_hotplug_msi);
3801 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3802 quirk_thunderbolt_hotplug_msi);
3803 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3804 quirk_thunderbolt_hotplug_msi);
3805 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3806 quirk_thunderbolt_hotplug_msi);
3807 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3808 quirk_thunderbolt_hotplug_msi);
3812 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3814 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3815 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3816 * be present after resume if a device was plugged in before suspend.
3818 * The Thunderbolt controller consists of a PCIe switch with downstream
3819 * bridges leading to the NHI and to the tunnel PCI bridges.
3821 * This quirk cuts power to the whole chip. Therefore we have to apply it
3822 * during suspend_noirq of the upstream bridge.
3824 * Power is automagically restored before resume. No action is needed.
3826 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3828 acpi_handle bridge, SXIO, SXFP, SXLV;
3830 if (!x86_apple_machine)
3832 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3836 * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller.
3837 * We don't know how to turn it back on again, but firmware does,
3838 * so we can only use SXIO/SXFP/SXLF if we're suspending via
3841 if (!pm_suspend_via_firmware())
3844 bridge = ACPI_HANDLE(&dev->dev);
3849 * SXIO and SXLV are present only on machines requiring this quirk.
3850 * Thunderbolt bridges in external devices might have the same
3851 * device ID as those on the host, but they will not have the
3852 * associated ACPI methods. This implicitly checks that we are at
3855 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3856 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3857 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3859 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n");
3861 /* magic sequence */
3862 acpi_execute_simple_method(SXIO, NULL, 1);
3863 acpi_execute_simple_method(SXFP, NULL, 0);
3865 acpi_execute_simple_method(SXLV, NULL, 0);
3866 acpi_execute_simple_method(SXIO, NULL, 0);
3867 acpi_execute_simple_method(SXLV, NULL, 0);
3869 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3870 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3871 quirk_apple_poweroff_thunderbolt);
3875 * Following are device-specific reset methods which can be used to
3876 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3879 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, bool probe)
3882 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3884 * The 82599 supports FLR on VFs, but FLR support is reported only
3885 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3886 * Thus we must call pcie_flr() directly without first checking if it is
3894 #define SOUTH_CHICKEN2 0xc2004
3895 #define PCH_PP_STATUS 0xc7200
3896 #define PCH_PP_CONTROL 0xc7204
3897 #define MSG_CTL 0x45010
3898 #define NSDE_PWR_STATE 0xd0100
3899 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3901 static int reset_ivb_igd(struct pci_dev *dev, bool probe)
3903 void __iomem *mmio_base;
3904 unsigned long timeout;
3910 mmio_base = pci_iomap(dev, 0, 0);
3914 iowrite32(0x00000002, mmio_base + MSG_CTL);
3917 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3918 * driver loaded sets the right bits. However, this's a reset and
3919 * the bits have been set by i915 previously, so we clobber
3920 * SOUTH_CHICKEN2 register directly here.
3922 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3924 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3925 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3927 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3929 val = ioread32(mmio_base + PCH_PP_STATUS);
3930 if ((val & 0xb0000000) == 0)
3931 goto reset_complete;
3933 } while (time_before(jiffies, timeout));
3934 pci_warn(dev, "timeout during reset\n");
3937 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3939 pci_iounmap(dev, mmio_base);
3943 /* Device-specific reset method for Chelsio T4-based adapters */
3944 static int reset_chelsio_generic_dev(struct pci_dev *dev, bool probe)
3950 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3951 * that we have no device-specific reset method.
3953 if ((dev->device & 0xf000) != 0x4000)
3957 * If this is the "probe" phase, return 0 indicating that we can
3958 * reset this device.
3964 * T4 can wedge if there are DMAs in flight within the chip and Bus
3965 * Master has been disabled. We need to have it on till the Function
3966 * Level Reset completes. (BUS_MASTER is disabled in
3967 * pci_reset_function()).
3969 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3970 pci_write_config_word(dev, PCI_COMMAND,
3971 old_command | PCI_COMMAND_MASTER);
3974 * Perform the actual device function reset, saving and restoring
3975 * configuration information around the reset.
3977 pci_save_state(dev);
3980 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3981 * are disabled when an MSI-X interrupt message needs to be delivered.
3982 * So we briefly re-enable MSI-X interrupts for the duration of the
3983 * FLR. The pci_restore_state() below will restore the original
3986 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3987 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3988 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3990 PCI_MSIX_FLAGS_ENABLE |
3991 PCI_MSIX_FLAGS_MASKALL);
3996 * Restore the configuration information (BAR values, etc.) including
3997 * the original PCI Configuration Space Command word, and return
4000 pci_restore_state(dev);
4001 pci_write_config_word(dev, PCI_COMMAND, old_command);
4005 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
4006 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
4007 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
4010 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after
4011 * FLR where config space reads from the device return -1. We seem to be
4012 * able to avoid this condition if we disable the NVMe controller prior to
4013 * FLR. This quirk is generic for any NVMe class device requiring similar
4014 * assistance to quiesce the device prior to FLR.
4016 * NVMe specification: https://nvmexpress.org/resources/specifications/
4018 * Chapter 2: Required and optional PCI config registers
4019 * Chapter 3: NVMe control registers
4020 * Chapter 7.3: Reset behavior
4022 static int nvme_disable_and_flr(struct pci_dev *dev, bool probe)
4028 if (dev->class != PCI_CLASS_STORAGE_EXPRESS ||
4029 pcie_reset_flr(dev, PCI_RESET_PROBE) || !pci_resource_start(dev, 0))
4035 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg));
4039 pci_read_config_word(dev, PCI_COMMAND, &cmd);
4040 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY);
4042 cfg = readl(bar + NVME_REG_CC);
4044 /* Disable controller if enabled */
4045 if (cfg & NVME_CC_ENABLE) {
4046 u32 cap = readl(bar + NVME_REG_CAP);
4047 unsigned long timeout;
4050 * Per nvme_disable_ctrl() skip shutdown notification as it
4051 * could complete commands to the admin queue. We only intend
4052 * to quiesce the device before reset.
4054 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE);
4056 writel(cfg, bar + NVME_REG_CC);
4059 * Some controllers require an additional delay here, see
4060 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet
4061 * supported by this quirk.
4064 /* Cap register provides max timeout in 500ms increments */
4065 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
4068 u32 status = readl(bar + NVME_REG_CSTS);
4070 /* Ready status becomes zero on disable complete */
4071 if (!(status & NVME_CSTS_RDY))
4076 if (time_after(jiffies, timeout)) {
4077 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n");
4083 pci_iounmap(dev, bar);
4091 * Some NVMe controllers such as Intel DC P3700 and Solidigm P44 Pro will
4092 * timeout waiting for ready status to change after NVMe enable if the driver
4093 * starts interacting with the device too soon after FLR. A 250ms delay after
4094 * FLR has heuristically proven to produce reliably working results for device
4097 static int delay_250ms_after_flr(struct pci_dev *dev, bool probe)
4100 return pcie_reset_flr(dev, PCI_RESET_PROBE);
4102 pcie_reset_flr(dev, PCI_RESET_DO_RESET);
4109 #define PCI_DEVICE_ID_HINIC_VF 0x375E
4110 #define HINIC_VF_FLR_TYPE 0x1000
4111 #define HINIC_VF_FLR_CAP_BIT (1UL << 30)
4112 #define HINIC_VF_OP 0xE80
4113 #define HINIC_VF_FLR_PROC_BIT (1UL << 18)
4114 #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */
4116 /* Device-specific reset method for Huawei Intelligent NIC virtual functions */
4117 static int reset_hinic_vf_dev(struct pci_dev *pdev, bool probe)
4119 unsigned long timeout;
4126 bar = pci_iomap(pdev, 0, 0);
4130 /* Get and check firmware capabilities */
4131 val = ioread32be(bar + HINIC_VF_FLR_TYPE);
4132 if (!(val & HINIC_VF_FLR_CAP_BIT)) {
4133 pci_iounmap(pdev, bar);
4137 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */
4138 val = ioread32be(bar + HINIC_VF_OP);
4139 val = val | HINIC_VF_FLR_PROC_BIT;
4140 iowrite32be(val, bar + HINIC_VF_OP);
4145 * The device must recapture its Bus and Device Numbers after FLR
4146 * in order generate Completions. Issue a config write to let the
4147 * device capture this information.
4149 pci_write_config_word(pdev, PCI_VENDOR_ID, 0);
4151 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */
4152 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT);
4154 val = ioread32be(bar + HINIC_VF_OP);
4155 if (!(val & HINIC_VF_FLR_PROC_BIT))
4156 goto reset_complete;
4158 } while (time_before(jiffies, timeout));
4160 val = ioread32be(bar + HINIC_VF_OP);
4161 if (!(val & HINIC_VF_FLR_PROC_BIT))
4162 goto reset_complete;
4164 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val);
4167 pci_iounmap(pdev, bar);
4172 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
4173 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
4174 reset_intel_82599_sfp_virtfn },
4175 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
4177 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
4179 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr },
4180 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr },
4181 { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr },
4182 { PCI_VENDOR_ID_SOLIDIGM, 0xf1ac, delay_250ms_after_flr },
4183 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4184 reset_chelsio_generic_dev },
4185 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF,
4186 reset_hinic_vf_dev },
4191 * These device-specific reset methods are here rather than in a driver
4192 * because when a host assigns a device to a guest VM, the host may need
4193 * to reset the device but probably doesn't have a driver for it.
4195 int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
4197 const struct pci_dev_reset_methods *i;
4199 for (i = pci_dev_reset_methods; i->reset; i++) {
4200 if ((i->vendor == dev->vendor ||
4201 i->vendor == (u16)PCI_ANY_ID) &&
4202 (i->device == dev->device ||
4203 i->device == (u16)PCI_ANY_ID))
4204 return i->reset(dev, probe);
4210 static void quirk_dma_func0_alias(struct pci_dev *dev)
4212 if (PCI_FUNC(dev->devfn) != 0)
4213 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1);
4217 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
4219 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
4221 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
4222 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
4224 static void quirk_dma_func1_alias(struct pci_dev *dev)
4226 if (PCI_FUNC(dev->devfn) != 1)
4227 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1);
4231 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
4232 * SKUs function 1 is present and is a legacy IDE controller, in other
4233 * SKUs this function is not present, making this a ghost requester.
4234 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
4236 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
4237 quirk_dma_func1_alias);
4238 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
4239 quirk_dma_func1_alias);
4240 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
4241 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
4242 quirk_dma_func1_alias);
4243 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
4244 quirk_dma_func1_alias);
4245 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
4246 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
4247 quirk_dma_func1_alias);
4248 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
4249 quirk_dma_func1_alias);
4250 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
4251 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
4252 quirk_dma_func1_alias);
4253 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
4254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
4255 quirk_dma_func1_alias);
4256 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
4257 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
4258 quirk_dma_func1_alias);
4259 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */
4260 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183,
4261 quirk_dma_func1_alias);
4262 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
4263 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
4264 quirk_dma_func1_alias);
4265 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */
4266 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215,
4267 quirk_dma_func1_alias);
4268 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
4269 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
4270 quirk_dma_func1_alias);
4271 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
4272 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
4273 quirk_dma_func1_alias);
4274 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9235,
4275 quirk_dma_func1_alias);
4276 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
4277 quirk_dma_func1_alias);
4278 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
4279 quirk_dma_func1_alias);
4280 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
4281 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
4282 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
4283 quirk_dma_func1_alias);
4284 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
4285 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4286 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4287 quirk_dma_func1_alias);
4290 * Some devices DMA with the wrong devfn, not just the wrong function.
4291 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4292 * the alias is "fixed" and independent of the device devfn.
4294 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4295 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4296 * single device on the secondary bus. In reality, the single exposed
4297 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4298 * that provides a bridge to the internal bus of the I/O processor. The
4299 * controller supports private devices, which can be hidden from PCI config
4300 * space. In the case of the Adaptec 3405, a private device at 01.0
4301 * appears to be the DMA engine, which therefore needs to become a DMA
4302 * alias for the device.
4304 static const struct pci_device_id fixed_dma_alias_tbl[] = {
4305 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4306 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4307 .driver_data = PCI_DEVFN(1, 0) },
4308 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4309 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4310 .driver_data = PCI_DEVFN(1, 0) },
4314 static void quirk_fixed_dma_alias(struct pci_dev *dev)
4316 const struct pci_device_id *id;
4318 id = pci_match_id(fixed_dma_alias_tbl, dev);
4320 pci_add_dma_alias(dev, id->driver_data, 1);
4322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4325 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4326 * using the wrong DMA alias for the device. Some of these devices can be
4327 * used as either forward or reverse bridges, so we need to test whether the
4328 * device is operating in the correct mode. We could probably apply this
4329 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4330 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4331 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4333 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4335 if (!pci_is_root_bus(pdev->bus) &&
4336 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4337 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4338 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4339 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4341 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4342 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4343 quirk_use_pcie_bridge_dma_alias);
4344 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4345 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4346 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4347 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4348 /* ITE 8893 has the same problem as the 8892 */
4349 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4350 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4351 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4354 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4355 * be added as aliases to the DMA device in order to allow buffer access
4356 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4357 * programmed in the EEPROM.
4359 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4361 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1);
4362 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1);
4363 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1);
4365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4369 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
4370 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
4372 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
4373 * when IOMMU is enabled. These aliases allow computational unit access to
4374 * host memory. These aliases mark the whole VCA device as one IOMMU
4377 * All possible slot numbers (0x20) are used, since we are unable to tell
4378 * what slot is used on other side. This quirk is intended for both host
4379 * and computational unit sides. The VCA devices have up to five functions
4380 * (four for DMA channels and one additional).
4382 static void quirk_pex_vca_alias(struct pci_dev *pdev)
4384 const unsigned int num_pci_slots = 0x20;
4387 for (slot = 0; slot < num_pci_slots; slot++)
4388 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5);
4390 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
4391 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
4392 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
4393 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
4394 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
4395 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
4398 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4399 * associated not at the root bus, but at a bridge below. This quirk avoids
4400 * generating invalid DMA aliases.
4402 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4404 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4406 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4407 quirk_bridge_cavm_thrx2_pcie_root);
4408 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4409 quirk_bridge_cavm_thrx2_pcie_root);
4412 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4413 * class code. Fix it.
4415 static void quirk_tw686x_class(struct pci_dev *pdev)
4417 u32 class = pdev->class;
4419 /* Use "Multimedia controller" class */
4420 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4421 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4422 class, pdev->class);
4424 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4425 quirk_tw686x_class);
4426 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4427 quirk_tw686x_class);
4428 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4429 quirk_tw686x_class);
4430 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4431 quirk_tw686x_class);
4434 * Some devices have problems with Transaction Layer Packets with the Relaxed
4435 * Ordering Attribute set. Such devices should mark themselves and other
4436 * device drivers should check before sending TLPs with RO set.
4438 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4440 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4441 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4445 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4446 * Complex have a Flow Control Credit issue which can cause performance
4447 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4449 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4450 quirk_relaxedordering_disable);
4451 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4452 quirk_relaxedordering_disable);
4453 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4454 quirk_relaxedordering_disable);
4455 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4456 quirk_relaxedordering_disable);
4457 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4458 quirk_relaxedordering_disable);
4459 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4460 quirk_relaxedordering_disable);
4461 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4462 quirk_relaxedordering_disable);
4463 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4464 quirk_relaxedordering_disable);
4465 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4466 quirk_relaxedordering_disable);
4467 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4468 quirk_relaxedordering_disable);
4469 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4470 quirk_relaxedordering_disable);
4471 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4472 quirk_relaxedordering_disable);
4473 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4474 quirk_relaxedordering_disable);
4475 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4476 quirk_relaxedordering_disable);
4477 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4478 quirk_relaxedordering_disable);
4479 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4480 quirk_relaxedordering_disable);
4481 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4482 quirk_relaxedordering_disable);
4483 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4484 quirk_relaxedordering_disable);
4485 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4486 quirk_relaxedordering_disable);
4487 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4488 quirk_relaxedordering_disable);
4489 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4490 quirk_relaxedordering_disable);
4491 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4492 quirk_relaxedordering_disable);
4493 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4494 quirk_relaxedordering_disable);
4495 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4496 quirk_relaxedordering_disable);
4497 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4498 quirk_relaxedordering_disable);
4499 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4500 quirk_relaxedordering_disable);
4501 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4502 quirk_relaxedordering_disable);
4503 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4504 quirk_relaxedordering_disable);
4507 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex
4508 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4509 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4510 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4511 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4512 * November 10, 2010). As a result, on this platform we can't use Relaxed
4513 * Ordering for Upstream TLPs.
4515 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4516 quirk_relaxedordering_disable);
4517 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4518 quirk_relaxedordering_disable);
4519 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4520 quirk_relaxedordering_disable);
4523 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4524 * values for the Attribute as were supplied in the header of the
4525 * corresponding Request, except as explicitly allowed when IDO is used."
4527 * If a non-compliant device generates a completion with a different
4528 * attribute than the request, the receiver may accept it (which itself
4529 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4530 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4531 * device access timeout.
4533 * If the non-compliant device generates completions with zero attributes
4534 * (instead of copying the attributes from the request), we can work around
4535 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4536 * upstream devices so they always generate requests with zero attributes.
4538 * This affects other devices under the same Root Port, but since these
4539 * attributes are performance hints, there should be no functional problem.
4541 * Note that Configuration Space accesses are never supposed to have TLP
4542 * Attributes, so we're safe waiting till after any Configuration Space
4543 * accesses to do the Root Port fixup.
4545 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4547 struct pci_dev *root_port = pcie_find_root_port(pdev);
4550 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n");
4554 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4555 dev_name(&pdev->dev));
4556 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4557 PCI_EXP_DEVCTL_RELAX_EN |
4558 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4562 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4563 * Completion it generates.
4565 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4568 * This mask/compare operation selects for Physical Function 4 on a
4569 * T5. We only need to fix up the Root Port once for any of the
4570 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4571 * 0x54xx so we use that one.
4573 if ((pdev->device & 0xff00) == 0x5400)
4574 quirk_disable_root_port_attributes(pdev);
4576 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4577 quirk_chelsio_T5_disable_root_port_attributes);
4580 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided
4582 * @acs_ctrl_req: Bitmask of desired ACS controls
4583 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by
4584 * the hardware design
4586 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included
4587 * in @acs_ctrl_ena, i.e., the device provides all the access controls the
4588 * caller desires. Return 0 otherwise.
4590 static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena)
4592 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req)
4598 * AMD has indicated that the devices below do not support peer-to-peer
4599 * in any system where they are found in the southbridge with an AMD
4600 * IOMMU in the system. Multifunction devices that do not support
4601 * peer-to-peer between functions can claim to support a subset of ACS.
4602 * Such devices effectively enable request redirect (RR) and completion
4603 * redirect (CR) since all transactions are redirected to the upstream
4606 * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/
4607 * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/
4608 * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/
4610 * 1002:4385 SBx00 SMBus Controller
4611 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4612 * 1002:4383 SBx00 Azalia (Intel HDA)
4613 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4614 * 1002:4384 SBx00 PCI to PCI Bridge
4615 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4617 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4619 * 1022:780f [AMD] FCH PCI Bridge
4620 * 1022:7809 [AMD] FCH USB OHCI Controller
4622 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4625 struct acpi_table_header *header = NULL;
4628 /* Targeting multifunction devices on the SB (appears on root bus) */
4629 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4632 /* The IVRS table describes the AMD IOMMU */
4633 status = acpi_get_table("IVRS", 0, &header);
4634 if (ACPI_FAILURE(status))
4637 acpi_put_table(header);
4639 /* Filter out flags not applicable to multifunction */
4640 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4642 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR);
4648 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4650 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4653 switch (dev->device) {
4655 * Effectively selects all downstream ports for whole ThunderX1
4656 * (which represents 8 SoCs).
4658 case 0xa000 ... 0xa7ff: /* ThunderX1 */
4659 case 0xaf84: /* ThunderX2 */
4660 case 0xb884: /* ThunderX3 */
4667 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4669 if (!pci_quirk_cavium_acs_match(dev))
4673 * Cavium Root Ports don't advertise an ACS capability. However,
4674 * the RTL internally implements similar protection as if ACS had
4675 * Source Validation, Request Redirection, Completion Redirection,
4676 * and Upstream Forwarding features enabled. Assert that the
4677 * hardware implements and enables equivalent ACS functionality for
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_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4687 * X-Gene Root Ports matching this quirk do not allow peer-to-peer
4688 * transactions with others, allowing masking out these bits as if they
4689 * were unimplemented in the ACS capability.
4691 return pci_acs_ctrl_enabled(acs_flags,
4692 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4696 * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability.
4697 * But the implementation could block peer-to-peer transactions between them
4698 * and provide ACS-like functionality.
4700 static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags)
4702 if (!pci_is_pcie(dev) ||
4703 ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) &&
4704 (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)))
4707 switch (dev->device) {
4708 case 0x0710 ... 0x071e:
4710 case 0x0723 ... 0x0732:
4711 return pci_acs_ctrl_enabled(acs_flags,
4712 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4719 * Many Intel PCH Root Ports do provide ACS-like features to disable peer
4720 * transactions and validate bus numbers in requests, but do not provide an
4721 * actual PCIe ACS capability. This is the list of device IDs known to fall
4722 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4724 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4726 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4727 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4728 /* Cougarpoint PCH */
4729 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4730 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4731 /* Pantherpoint PCH */
4732 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4733 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4734 /* Lynxpoint-H PCH */
4735 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4736 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4737 /* Lynxpoint-LP PCH */
4738 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4739 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4741 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4742 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4743 /* Patsburg (X79) PCH */
4744 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4745 /* Wellsburg (X99) PCH */
4746 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4747 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4748 /* Lynx Point (9 series) PCH */
4749 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4752 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4756 /* Filter out a few obvious non-matches first */
4757 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4760 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4761 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4767 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4769 if (!pci_quirk_intel_pch_acs_match(dev))
4772 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK)
4773 return pci_acs_ctrl_enabled(acs_flags,
4774 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4776 return pci_acs_ctrl_enabled(acs_flags, 0);
4780 * These QCOM Root Ports do provide ACS-like features to disable peer
4781 * transactions and validate bus numbers in requests, but do not provide an
4782 * actual PCIe ACS capability. Hardware supports source validation but it
4783 * will report the issue as Completer Abort instead of ACS Violation.
4784 * Hardware doesn't support peer-to-peer and each Root Port is a Root
4785 * Complex with unique segment numbers. It is not possible for one Root
4786 * Port to pass traffic to another Root Port. All PCIe transactions are
4787 * terminated inside the Root Port.
4789 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4791 return pci_acs_ctrl_enabled(acs_flags,
4792 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4796 * Each of these NXP Root Ports is in a Root Complex with a unique segment
4797 * number and does provide isolation features to disable peer transactions
4798 * and validate bus numbers in requests, but does not provide an ACS
4801 static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags)
4803 return pci_acs_ctrl_enabled(acs_flags,
4804 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4807 static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags)
4809 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4813 * Amazon's Annapurna Labs root ports don't include an ACS capability,
4814 * but do include ACS-like functionality. The hardware doesn't support
4815 * peer-to-peer transactions via the root port and each has a unique
4818 * Additionally, the root ports cannot send traffic to each other.
4820 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4822 return acs_flags ? 0 : 1;
4826 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4827 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4828 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4829 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4830 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4831 * control register is at offset 8 instead of 6 and we should probably use
4832 * dword accesses to them. This applies to the following PCI Device IDs, as
4833 * found in volume 1 of the datasheet[2]:
4835 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4836 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4838 * N.B. This doesn't fix what lspci shows.
4840 * The 100 series chipset specification update includes this as errata #23[3].
4842 * The 200 series chipset (Union Point) has the same bug according to the
4843 * specification update (Intel 200 Series Chipset Family Platform Controller
4844 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4845 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4848 * 0xa290-0xa29f PCI Express Root port #{0-16}
4849 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4851 * Mobile chipsets are also affected, 7th & 8th Generation
4852 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4853 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4854 * Processor Family I/O for U Quad Core Platforms Specification Update,
4855 * August 2017, Revision 002, Document#: 334660-002)[6]
4856 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4857 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4858 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4860 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4862 * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4863 * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4864 * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4865 * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4866 * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4867 * [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
4868 * [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
4870 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4872 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4875 switch (dev->device) {
4876 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4877 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4878 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4885 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4887 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4892 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4899 /* see pci_acs_flags_enabled() */
4900 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4901 acs_flags &= (cap | PCI_ACS_EC);
4903 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4905 return pci_acs_ctrl_enabled(acs_flags, ctrl);
4908 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4911 * SV, TB, and UF are not relevant to multifunction endpoints.
4913 * Multifunction devices are only required to implement RR, CR, and DT
4914 * in their ACS capability if they support peer-to-peer transactions.
4915 * Devices matching this quirk have been verified by the vendor to not
4916 * perform peer-to-peer with other functions, allowing us to mask out
4917 * these bits as if they were unimplemented in the ACS capability.
4919 return pci_acs_ctrl_enabled(acs_flags,
4920 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4921 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4924 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags)
4927 * Intel RCiEP's are required to allow p2p only on translated
4928 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16,
4929 * "Root-Complex Peer to Peer Considerations".
4931 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END)
4934 return pci_acs_ctrl_enabled(acs_flags,
4935 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4938 static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4941 * iProc PAXB Root Ports don't advertise an ACS capability, but
4942 * they do not allow peer-to-peer transactions between Root Ports.
4943 * Allow each Root Port to be in a separate IOMMU group by masking
4946 return pci_acs_ctrl_enabled(acs_flags,
4947 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4951 * Wangxun 10G/1G NICs have no ACS capability, and on multi-function
4952 * devices, peer-to-peer transactions are not be used between the functions.
4953 * So add an ACS quirk for below devices to isolate functions.
4954 * SFxxx 1G NICs(em).
4955 * RP1000/RP2000 10G NICs(sp).
4957 static int pci_quirk_wangxun_nic_acs(struct pci_dev *dev, u16 acs_flags)
4959 switch (dev->device) {
4960 case 0x0100 ... 0x010F:
4963 return pci_acs_ctrl_enabled(acs_flags,
4964 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4970 static const struct pci_dev_acs_enabled {
4973 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4974 } pci_dev_acs_enabled[] = {
4975 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4976 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4977 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4978 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4979 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4980 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4981 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4982 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4983 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4984 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4985 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4986 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4987 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4988 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4989 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4990 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4991 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4992 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4993 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4994 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4995 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4996 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4997 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4998 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4999 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
5000 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
5001 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
5002 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
5003 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
5004 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
5005 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
5007 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
5008 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
5009 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
5010 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
5011 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
5012 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
5013 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
5015 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
5016 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
5017 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
5018 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
5019 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
5020 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
5021 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
5022 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
5024 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
5025 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
5026 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
5028 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
5029 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
5030 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
5031 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
5032 /* 82571 (Quads omitted due to non-ACS switch) */
5033 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
5034 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
5035 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
5036 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
5038 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
5039 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
5040 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs },
5041 /* QCOM QDF2xxx root ports */
5042 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
5043 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
5044 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
5045 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
5046 /* Intel PCH root ports */
5047 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
5048 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
5049 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
5050 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
5051 /* Cavium ThunderX */
5052 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
5053 /* Cavium multi-function devices */
5054 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },
5055 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },
5056 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },
5058 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
5059 /* Ampere Computing */
5060 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
5061 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
5062 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
5063 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
5064 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
5065 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
5066 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
5067 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
5068 /* Broadcom multi-function device */
5069 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
5070 { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs },
5071 { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs },
5072 { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs },
5073 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
5074 /* Amazon Annapurna Labs */
5075 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
5076 /* Zhaoxin multi-function devices */
5077 { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
5078 { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
5079 { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
5080 /* NXP root ports, xx=16, 12, or 08 cores */
5081 /* LX2xx0A : without security features + CAN-FD */
5082 { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs },
5083 { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs },
5084 { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs },
5085 /* LX2xx0C : security features + CAN-FD */
5086 { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs },
5087 { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs },
5088 { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs },
5089 /* LX2xx0E : security features + CAN */
5090 { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs },
5091 { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs },
5092 { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs },
5093 /* LX2xx0N : without security features + CAN */
5094 { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs },
5095 { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs },
5096 { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs },
5097 /* LX2xx2A : without security features + CAN-FD */
5098 { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs },
5099 { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs },
5100 { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs },
5101 /* LX2xx2C : security features + CAN-FD */
5102 { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs },
5103 { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs },
5104 { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs },
5105 /* LX2xx2E : security features + CAN */
5106 { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs },
5107 { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs },
5108 { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs },
5109 /* LX2xx2N : without security features + CAN */
5110 { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs },
5111 { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs },
5112 { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs },
5113 /* Zhaoxin Root/Downstream Ports */
5114 { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
5116 { PCI_VENDOR_ID_WANGXUN, PCI_ANY_ID, pci_quirk_wangxun_nic_acs },
5121 * pci_dev_specific_acs_enabled - check whether device provides ACS controls
5123 * @acs_flags: Bitmask of desired ACS controls
5126 * -ENOTTY: No quirk applies to this device; we can't tell whether the
5127 * device provides the desired controls
5128 * 0: Device does not provide all the desired controls
5129 * >0: Device provides all the controls in @acs_flags
5131 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
5133 const struct pci_dev_acs_enabled *i;
5137 * Allow devices that do not expose standard PCIe ACS capabilities
5138 * or control to indicate their support here. Multi-function express
5139 * devices which do not allow internal peer-to-peer between functions,
5140 * but do not implement PCIe ACS may wish to return true here.
5142 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
5143 if ((i->vendor == dev->vendor ||
5144 i->vendor == (u16)PCI_ANY_ID) &&
5145 (i->device == dev->device ||
5146 i->device == (u16)PCI_ANY_ID)) {
5147 ret = i->acs_enabled(dev, acs_flags);
5156 /* Config space offset of Root Complex Base Address register */
5157 #define INTEL_LPC_RCBA_REG 0xf0
5158 /* 31:14 RCBA address */
5159 #define INTEL_LPC_RCBA_MASK 0xffffc000
5161 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
5163 /* Backbone Scratch Pad Register */
5164 #define INTEL_BSPR_REG 0x1104
5165 /* Backbone Peer Non-Posted Disable */
5166 #define INTEL_BSPR_REG_BPNPD (1 << 8)
5167 /* Backbone Peer Posted Disable */
5168 #define INTEL_BSPR_REG_BPPD (1 << 9)
5170 /* Upstream Peer Decode Configuration Register */
5171 #define INTEL_UPDCR_REG 0x1014
5172 /* 5:0 Peer Decode Enable bits */
5173 #define INTEL_UPDCR_REG_MASK 0x3f
5175 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
5177 u32 rcba, bspr, updcr;
5178 void __iomem *rcba_mem;
5181 * Read the RCBA register from the LPC (D31:F0). PCH root ports
5182 * are D28:F* and therefore get probed before LPC, thus we can't
5183 * use pci_get_slot()/pci_read_config_dword() here.
5185 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
5186 INTEL_LPC_RCBA_REG, &rcba);
5187 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
5190 rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK,
5191 PAGE_ALIGN(INTEL_UPDCR_REG));
5196 * The BSPR can disallow peer cycles, but it's set by soft strap and
5197 * therefore read-only. If both posted and non-posted peer cycles are
5198 * disallowed, we're ok. If either are allowed, then we need to use
5199 * the UPDCR to disable peer decodes for each port. This provides the
5200 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5202 bspr = readl(rcba_mem + INTEL_BSPR_REG);
5203 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
5204 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
5205 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
5206 if (updcr & INTEL_UPDCR_REG_MASK) {
5207 pci_info(dev, "Disabling UPDCR peer decodes\n");
5208 updcr &= ~INTEL_UPDCR_REG_MASK;
5209 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
5217 /* Miscellaneous Port Configuration register */
5218 #define INTEL_MPC_REG 0xd8
5219 /* MPC: Invalid Receive Bus Number Check Enable */
5220 #define INTEL_MPC_REG_IRBNCE (1 << 26)
5222 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
5227 * When enabled, the IRBNCE bit of the MPC register enables the
5228 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
5229 * ensures that requester IDs fall within the bus number range
5230 * of the bridge. Enable if not already.
5232 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
5233 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
5234 pci_info(dev, "Enabling MPC IRBNCE\n");
5235 mpc |= INTEL_MPC_REG_IRBNCE;
5236 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
5241 * Currently this quirk does the equivalent of
5242 * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5244 * TODO: This quirk also needs to do equivalent of PCI_ACS_TB,
5245 * if dev->external_facing || dev->untrusted
5247 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
5249 if (!pci_quirk_intel_pch_acs_match(dev))
5252 if (pci_quirk_enable_intel_lpc_acs(dev)) {
5253 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n");
5257 pci_quirk_enable_intel_rp_mpc_acs(dev);
5259 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
5261 pci_info(dev, "Intel PCH root port ACS workaround enabled\n");
5266 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
5271 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5278 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5279 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5281 ctrl |= (cap & PCI_ACS_SV);
5282 ctrl |= (cap & PCI_ACS_RR);
5283 ctrl |= (cap & PCI_ACS_CR);
5284 ctrl |= (cap & PCI_ACS_UF);
5286 if (pci_ats_disabled() || dev->external_facing || dev->untrusted)
5287 ctrl |= (cap & PCI_ACS_TB);
5289 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5291 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n");
5296 static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
5301 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5308 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5309 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5311 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
5313 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5315 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n");
5320 static const struct pci_dev_acs_ops {
5323 int (*enable_acs)(struct pci_dev *dev);
5324 int (*disable_acs_redir)(struct pci_dev *dev);
5325 } pci_dev_acs_ops[] = {
5326 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5327 .enable_acs = pci_quirk_enable_intel_pch_acs,
5329 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5330 .enable_acs = pci_quirk_enable_intel_spt_pch_acs,
5331 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir,
5335 int pci_dev_specific_enable_acs(struct pci_dev *dev)
5337 const struct pci_dev_acs_ops *p;
5340 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5341 p = &pci_dev_acs_ops[i];
5342 if ((p->vendor == dev->vendor ||
5343 p->vendor == (u16)PCI_ANY_ID) &&
5344 (p->device == dev->device ||
5345 p->device == (u16)PCI_ANY_ID) &&
5347 ret = p->enable_acs(dev);
5356 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
5358 const struct pci_dev_acs_ops *p;
5361 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5362 p = &pci_dev_acs_ops[i];
5363 if ((p->vendor == dev->vendor ||
5364 p->vendor == (u16)PCI_ANY_ID) &&
5365 (p->device == dev->device ||
5366 p->device == (u16)PCI_ANY_ID) &&
5367 p->disable_acs_redir) {
5368 ret = p->disable_acs_redir(dev);
5378 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with
5379 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
5380 * Next Capability pointer in the MSI Capability Structure should point to
5381 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
5384 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
5389 struct pci_cap_saved_state *state;
5391 /* Bail if the hardware bug is fixed */
5392 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
5395 /* Bail if MSI Capability Structure is not found for some reason */
5396 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
5401 * Bail if Next Capability pointer in the MSI Capability Structure
5402 * is not the expected incorrect 0x00.
5404 pci_read_config_byte(pdev, pos + 1, &next_cap);
5409 * PCIe Capability Structure is expected to be at 0x50 and should
5410 * terminate the list (Next Capability pointer is 0x00). Verify
5411 * Capability Id and Next Capability pointer is as expected.
5412 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
5413 * to correctly set kernel data structures which have already been
5414 * set incorrectly due to the hardware bug.
5417 pci_read_config_word(pdev, pos, ®16);
5418 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
5420 #ifndef PCI_EXP_SAVE_REGS
5421 #define PCI_EXP_SAVE_REGS 7
5423 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
5425 pdev->pcie_cap = pos;
5426 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
5427 pdev->pcie_flags_reg = reg16;
5428 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
5429 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
5431 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
5432 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
5433 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
5434 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
5436 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
5440 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
5444 state->cap.cap_nr = PCI_CAP_ID_EXP;
5445 state->cap.cap_extended = 0;
5446 state->cap.size = size;
5447 cap = (u16 *)&state->cap.data[0];
5448 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
5449 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
5450 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
5451 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
5452 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
5453 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
5454 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
5455 hlist_add_head(&state->next, &pdev->saved_cap_space);
5458 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
5461 * FLR may cause the following to devices to hang:
5463 * AMD Starship/Matisse HD Audio Controller 0x1487
5464 * AMD Starship USB 3.0 Host Controller 0x148c
5465 * AMD Matisse USB 3.0 Host Controller 0x149c
5466 * Intel 82579LM Gigabit Ethernet Controller 0x1502
5467 * Intel 82579V Gigabit Ethernet Controller 0x1503
5470 static void quirk_no_flr(struct pci_dev *dev)
5472 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
5474 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr);
5475 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr);
5476 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
5477 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x7901, quirk_no_flr);
5478 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
5479 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
5481 /* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */
5482 static void quirk_no_flr_snet(struct pci_dev *dev)
5484 if (dev->revision == 0x1)
5487 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet);
5489 static void quirk_no_ext_tags(struct pci_dev *pdev)
5491 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
5496 bridge->no_ext_tags = 1;
5497 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n");
5499 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5501 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5502 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5503 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5504 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5505 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5506 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5507 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5509 #ifdef CONFIG_PCI_ATS
5511 * Some devices require additional driver setup to enable ATS. Don't use
5512 * ATS for those devices as ATS will be enabled before the driver has had a
5513 * chance to load and configure the device.
5515 static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
5517 if (pdev->device == 0x15d8) {
5518 if (pdev->revision == 0xcf &&
5519 pdev->subsystem_vendor == 0xea50 &&
5520 (pdev->subsystem_device == 0xce19 ||
5521 pdev->subsystem_device == 0xcc10 ||
5522 pdev->subsystem_device == 0xcc08))
5529 pci_info(pdev, "disabling ATS\n");
5533 /* AMD Stoney platform GPU */
5534 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
5535 /* AMD Iceland dGPU */
5536 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
5537 /* AMD Navi10 dGPU */
5538 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7310, quirk_amd_harvest_no_ats);
5539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
5540 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7318, quirk_amd_harvest_no_ats);
5541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7319, quirk_amd_harvest_no_ats);
5542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731a, quirk_amd_harvest_no_ats);
5543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731b, quirk_amd_harvest_no_ats);
5544 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731e, quirk_amd_harvest_no_ats);
5545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731f, quirk_amd_harvest_no_ats);
5546 /* AMD Navi14 dGPU */
5547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
5548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats);
5549 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7347, quirk_amd_harvest_no_ats);
5550 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x734f, quirk_amd_harvest_no_ats);
5551 /* AMD Raven platform iGPU */
5552 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);
5553 #endif /* CONFIG_PCI_ATS */
5555 /* Freescale PCIe doesn't support MSI in RC mode */
5556 static void quirk_fsl_no_msi(struct pci_dev *pdev)
5558 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5561 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5564 * Although not allowed by the spec, some multi-function devices have
5565 * dependencies of one function (consumer) on another (supplier). For the
5566 * consumer to work in D0, the supplier must also be in D0. Create a
5567 * device link from the consumer to the supplier to enforce this
5568 * dependency. Runtime PM is allowed by default on the consumer to prevent
5569 * it from permanently keeping the supplier awake.
5571 static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5572 unsigned int supplier, unsigned int class,
5573 unsigned int class_shift)
5575 struct pci_dev *supplier_pdev;
5577 if (PCI_FUNC(pdev->devfn) != consumer)
5580 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5582 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5583 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5584 pci_dev_put(supplier_pdev);
5588 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5589 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5590 pci_info(pdev, "D0 power state depends on %s\n",
5591 pci_name(supplier_pdev));
5593 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5594 pci_name(supplier_pdev));
5596 pm_runtime_allow(&pdev->dev);
5597 pci_dev_put(supplier_pdev);
5601 * Create device link for GPUs with integrated HDA controller for streaming
5602 * audio to attached displays.
5604 static void quirk_gpu_hda(struct pci_dev *hda)
5606 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5608 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5609 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5610 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5611 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5612 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5613 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5616 * Create device link for GPUs with integrated USB xHCI Host
5617 * controller to VGA.
5619 static void quirk_gpu_usb(struct pci_dev *usb)
5621 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16);
5623 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5624 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5625 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5626 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5629 * Create device link for GPUs with integrated Type-C UCSI controller
5630 * to VGA. Currently there is no class code defined for UCSI device over PCI
5631 * so using UNKNOWN class for now and it will be updated when UCSI
5632 * over PCI gets a class code.
5634 #define PCI_CLASS_SERIAL_UNKNOWN 0x0c80
5635 static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
5637 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16);
5639 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5640 PCI_CLASS_SERIAL_UNKNOWN, 8,
5641 quirk_gpu_usb_typec_ucsi);
5642 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5643 PCI_CLASS_SERIAL_UNKNOWN, 8,
5644 quirk_gpu_usb_typec_ucsi);
5647 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
5648 * disabled. https://devtalk.nvidia.com/default/topic/1024022
5650 static void quirk_nvidia_hda(struct pci_dev *gpu)
5655 /* There was no integrated HDA controller before MCP89 */
5656 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M)
5659 /* Bit 25 at offset 0x488 enables the HDA controller */
5660 pci_read_config_dword(gpu, 0x488, &val);
5664 pci_info(gpu, "Enabling HDA controller\n");
5665 pci_write_config_dword(gpu, 0x488, val | BIT(25));
5667 /* The GPU becomes a multi-function device when the HDA is enabled */
5668 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
5669 gpu->multifunction = !!(hdr_type & 0x80);
5671 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5672 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5673 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5674 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5677 * Some IDT switches incorrectly flag an ACS Source Validation error on
5678 * completions for config read requests even though PCIe r4.0, sec
5679 * 6.12.1.1, says that completions are never affected by ACS Source
5680 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36:
5682 * Item #36 - Downstream port applies ACS Source Validation to Completions
5683 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that
5684 * completions are never affected by ACS Source Validation. However,
5685 * completions received by a downstream port of the PCIe switch from a
5686 * device that has not yet captured a PCIe bus number are incorrectly
5687 * dropped by ACS Source Validation by the switch downstream port.
5689 * The workaround suggested by IDT is to issue a config write to the
5690 * downstream device before issuing the first config read. This allows the
5691 * downstream device to capture its bus and device numbers (see PCIe r4.0,
5692 * sec 2.2.9), thus avoiding the ACS error on the completion.
5694 * However, we don't know when the device is ready to accept the config
5695 * write, so we do config reads until we receive a non-Config Request Retry
5696 * Status, then do the config write.
5698 * To avoid hitting the erratum when doing the config reads, we disable ACS
5699 * SV around this process.
5701 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
5706 struct pci_dev *bridge = bus->self;
5708 pos = bridge->acs_cap;
5710 /* Disable ACS SV before initial config reads */
5712 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl);
5713 if (ctrl & PCI_ACS_SV)
5714 pci_write_config_word(bridge, pos + PCI_ACS_CTRL,
5715 ctrl & ~PCI_ACS_SV);
5718 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);
5720 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */
5722 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0);
5724 /* Re-enable ACS_SV if it was previously enabled */
5725 if (ctrl & PCI_ACS_SV)
5726 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl);
5732 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between
5733 * NT endpoints via the internal switch fabric. These IDs replace the
5734 * originating Requester ID TLPs which access host memory on peer NTB
5735 * ports. Therefore, all proxy IDs must be aliased to the NTB device
5736 * to permit access when the IOMMU is turned on.
5738 static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
5741 struct ntb_info_regs __iomem *mmio_ntb;
5742 struct ntb_ctrl_regs __iomem *mmio_ctrl;
5747 if (pci_enable_device(pdev)) {
5748 pci_err(pdev, "Cannot enable Switchtec device\n");
5752 mmio = pci_iomap(pdev, 0, 0);
5754 pci_disable_device(pdev);
5755 pci_err(pdev, "Cannot iomap Switchtec device\n");
5759 pci_info(pdev, "Setting Switchtec proxy ID aliases\n");
5761 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
5762 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
5764 partition = ioread8(&mmio_ntb->partition_id);
5766 partition_map = ioread32(&mmio_ntb->ep_map);
5767 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32;
5768 partition_map &= ~(1ULL << partition);
5770 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) {
5771 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl;
5775 if (!(partition_map & (1ULL << pp)))
5778 pci_dbg(pdev, "Processing partition %d\n", pp);
5780 mmio_peer_ctrl = &mmio_ctrl[pp];
5782 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size);
5784 pci_warn(pdev, "Partition %d table_sz 0\n", pp);
5788 if (table_sz > 512) {
5790 "Invalid Switchtec partition %d table_sz %d\n",
5795 for (te = 0; te < table_sz; te++) {
5799 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]);
5800 devfn = (rid_entry >> 1) & 0xFF;
5802 "Aliasing Partition %d Proxy ID %02x.%d\n",
5803 pp, PCI_SLOT(devfn), PCI_FUNC(devfn));
5804 pci_add_dma_alias(pdev, devfn, 1);
5808 pci_iounmap(pdev, mmio);
5809 pci_disable_device(pdev);
5811 #define SWITCHTEC_QUIRK(vid) \
5812 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
5813 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
5815 SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */
5816 SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */
5817 SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */
5818 SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */
5819 SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */
5820 SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */
5821 SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */
5822 SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */
5823 SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */
5824 SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */
5825 SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */
5826 SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */
5827 SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */
5828 SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */
5829 SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */
5830 SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */
5831 SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */
5832 SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */
5833 SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */
5834 SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */
5835 SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */
5836 SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */
5837 SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */
5838 SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */
5839 SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */
5840 SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */
5841 SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */
5842 SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */
5843 SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */
5844 SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */
5845 SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */
5846 SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */
5847 SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */
5848 SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */
5849 SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */
5850 SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */
5851 SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */
5852 SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */
5853 SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */
5854 SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */
5855 SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */
5856 SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */
5857 SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */
5858 SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */
5859 SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */
5860 SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */
5861 SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */
5862 SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */
5863 SWITCHTEC_QUIRK(0x4352); /* PFXA 52XG4 */
5864 SWITCHTEC_QUIRK(0x4336); /* PFXA 36XG4 */
5865 SWITCHTEC_QUIRK(0x4328); /* PFXA 28XG4 */
5866 SWITCHTEC_QUIRK(0x4452); /* PSXA 52XG4 */
5867 SWITCHTEC_QUIRK(0x4436); /* PSXA 36XG4 */
5868 SWITCHTEC_QUIRK(0x4428); /* PSXA 28XG4 */
5869 SWITCHTEC_QUIRK(0x4552); /* PAXA 52XG4 */
5870 SWITCHTEC_QUIRK(0x4536); /* PAXA 36XG4 */
5871 SWITCHTEC_QUIRK(0x4528); /* PAXA 28XG4 */
5872 SWITCHTEC_QUIRK(0x5000); /* PFX 100XG5 */
5873 SWITCHTEC_QUIRK(0x5084); /* PFX 84XG5 */
5874 SWITCHTEC_QUIRK(0x5068); /* PFX 68XG5 */
5875 SWITCHTEC_QUIRK(0x5052); /* PFX 52XG5 */
5876 SWITCHTEC_QUIRK(0x5036); /* PFX 36XG5 */
5877 SWITCHTEC_QUIRK(0x5028); /* PFX 28XG5 */
5878 SWITCHTEC_QUIRK(0x5100); /* PSX 100XG5 */
5879 SWITCHTEC_QUIRK(0x5184); /* PSX 84XG5 */
5880 SWITCHTEC_QUIRK(0x5168); /* PSX 68XG5 */
5881 SWITCHTEC_QUIRK(0x5152); /* PSX 52XG5 */
5882 SWITCHTEC_QUIRK(0x5136); /* PSX 36XG5 */
5883 SWITCHTEC_QUIRK(0x5128); /* PSX 28XG5 */
5884 SWITCHTEC_QUIRK(0x5200); /* PAX 100XG5 */
5885 SWITCHTEC_QUIRK(0x5284); /* PAX 84XG5 */
5886 SWITCHTEC_QUIRK(0x5268); /* PAX 68XG5 */
5887 SWITCHTEC_QUIRK(0x5252); /* PAX 52XG5 */
5888 SWITCHTEC_QUIRK(0x5236); /* PAX 36XG5 */
5889 SWITCHTEC_QUIRK(0x5228); /* PAX 28XG5 */
5890 SWITCHTEC_QUIRK(0x5300); /* PFXA 100XG5 */
5891 SWITCHTEC_QUIRK(0x5384); /* PFXA 84XG5 */
5892 SWITCHTEC_QUIRK(0x5368); /* PFXA 68XG5 */
5893 SWITCHTEC_QUIRK(0x5352); /* PFXA 52XG5 */
5894 SWITCHTEC_QUIRK(0x5336); /* PFXA 36XG5 */
5895 SWITCHTEC_QUIRK(0x5328); /* PFXA 28XG5 */
5896 SWITCHTEC_QUIRK(0x5400); /* PSXA 100XG5 */
5897 SWITCHTEC_QUIRK(0x5484); /* PSXA 84XG5 */
5898 SWITCHTEC_QUIRK(0x5468); /* PSXA 68XG5 */
5899 SWITCHTEC_QUIRK(0x5452); /* PSXA 52XG5 */
5900 SWITCHTEC_QUIRK(0x5436); /* PSXA 36XG5 */
5901 SWITCHTEC_QUIRK(0x5428); /* PSXA 28XG5 */
5902 SWITCHTEC_QUIRK(0x5500); /* PAXA 100XG5 */
5903 SWITCHTEC_QUIRK(0x5584); /* PAXA 84XG5 */
5904 SWITCHTEC_QUIRK(0x5568); /* PAXA 68XG5 */
5905 SWITCHTEC_QUIRK(0x5552); /* PAXA 52XG5 */
5906 SWITCHTEC_QUIRK(0x5536); /* PAXA 36XG5 */
5907 SWITCHTEC_QUIRK(0x5528); /* PAXA 28XG5 */
5910 * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
5911 * These IDs are used to forward responses to the originator on the other
5912 * side of the NTB. Alias all possible IDs to the NTB to permit access when
5913 * the IOMMU is turned on.
5915 static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev)
5917 pci_info(pdev, "Setting PLX NTB proxy ID aliases\n");
5918 /* PLX NTB may use all 256 devfns */
5919 pci_add_dma_alias(pdev, 0, 256);
5921 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias);
5922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias);
5925 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does
5926 * not always reset the secondary Nvidia GPU between reboots if the system
5927 * is configured to use Hybrid Graphics mode. This results in the GPU
5928 * being left in whatever state it was in during the *previous* boot, which
5929 * causes spurious interrupts from the GPU, which in turn causes us to
5930 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly,
5931 * this also completely breaks nouveau.
5933 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a
5934 * clean state and fixes all these issues.
5936 * When the machine is configured in Dedicated display mode, the issue
5937 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this
5938 * mode, so we can detect that and avoid resetting it.
5940 static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)
5945 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
5946 pdev->subsystem_device != 0x222e ||
5947 !pci_reset_supported(pdev))
5950 if (pci_enable_device_mem(pdev))
5954 * Based on nvkm_device_ctor() in
5955 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
5957 map = pci_iomap(pdev, 0, 0x23000);
5959 pci_err(pdev, "Can't map MMIO space\n");
5964 * Make sure the GPU looks like it's been POSTed before resetting
5967 if (ioread32(map + 0x2240c) & 0x2) {
5968 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n");
5969 ret = pci_reset_bus(pdev);
5971 pci_err(pdev, "Failed to reset GPU: %d\n", ret);
5976 pci_disable_device(pdev);
5978 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1,
5979 PCI_CLASS_DISPLAY_VGA, 8,
5980 quirk_reset_lenovo_thinkpad_p50_nvgpu);
5983 * Device [1b21:2142]
5984 * When in D0, PME# doesn't get asserted when plugging USB 3.0 device.
5986 static void pci_fixup_no_d0_pme(struct pci_dev *dev)
5988 pci_info(dev, "PME# does not work under D0, disabling it\n");
5989 dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT);
5991 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme);
5994 * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI]
5996 * These devices advertise PME# support in all power states but don't
5997 * reliably assert it.
5999 * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf)
6000 * says "The MSI Function is not implemented on this device" in chapters
6001 * 7.3.27, 7.3.29-7.3.31.
6003 static void pci_fixup_no_msi_no_pme(struct pci_dev *dev)
6005 #ifdef CONFIG_PCI_MSI
6006 pci_info(dev, "MSI is not implemented on this device, disabling it\n");
6009 pci_info(dev, "PME# is unreliable, disabling it\n");
6010 dev->pme_support = 0;
6012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme);
6013 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme);
6015 static void apex_pci_fixup_class(struct pci_dev *pdev)
6017 pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class;
6019 DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
6020 PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);
6023 * Pericom PI7C9X2G404/PI7C9X2G304/PI7C9X2G303 switch erratum E5 -
6024 * ACS P2P Request Redirect is not functional
6026 * When ACS P2P Request Redirect is enabled and bandwidth is not balanced
6027 * between upstream and downstream ports, packets are queued in an internal
6028 * buffer until CPLD packet. The workaround is to use the switch in store and
6031 #define PI7C9X2Gxxx_MODE_REG 0x74
6032 #define PI7C9X2Gxxx_STORE_FORWARD_MODE BIT(0)
6033 static void pci_fixup_pericom_acs_store_forward(struct pci_dev *pdev)
6035 struct pci_dev *upstream;
6038 /* Downstream ports only */
6039 if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM)
6042 /* Check for ACS P2P Request Redirect use */
6045 pci_read_config_word(pdev, pdev->acs_cap + PCI_ACS_CTRL, &val);
6046 if (!(val & PCI_ACS_RR))
6049 upstream = pci_upstream_bridge(pdev);
6053 pci_read_config_word(upstream, PI7C9X2Gxxx_MODE_REG, &val);
6054 if (!(val & PI7C9X2Gxxx_STORE_FORWARD_MODE)) {
6055 pci_info(upstream, "Setting PI7C9X2Gxxx store-forward mode to avoid ACS erratum\n");
6056 pci_write_config_word(upstream, PI7C9X2Gxxx_MODE_REG, val |
6057 PI7C9X2Gxxx_STORE_FORWARD_MODE);
6061 * Apply fixup on enable and on resume, in order to apply the fix up whenever
6062 * ACS configuration changes or switch mode is reset
6064 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2404,
6065 pci_fixup_pericom_acs_store_forward);
6066 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2404,
6067 pci_fixup_pericom_acs_store_forward);
6068 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2304,
6069 pci_fixup_pericom_acs_store_forward);
6070 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2304,
6071 pci_fixup_pericom_acs_store_forward);
6072 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303,
6073 pci_fixup_pericom_acs_store_forward);
6074 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303,
6075 pci_fixup_pericom_acs_store_forward);
6077 static void nvidia_ion_ahci_fixup(struct pci_dev *pdev)
6079 pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING;
6081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup);
6083 static void rom_bar_overlap_defect(struct pci_dev *dev)
6085 pci_info(dev, "working around ROM BAR overlap defect\n");
6086 dev->rom_bar_overlap = 1;
6088 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect);
6089 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect);
6090 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect);
6091 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect);
6093 #ifdef CONFIG_PCIEASPM
6095 * Several Intel DG2 graphics devices advertise that they can only tolerate
6096 * 1us latency when transitioning from L1 to L0, which may prevent ASPM L1
6097 * from being enabled. But in fact these devices can tolerate unlimited
6098 * latency. Override their Device Capabilities value to allow ASPM L1 to
6101 static void aspm_l1_acceptable_latency(struct pci_dev *dev)
6103 u32 l1_lat = FIELD_GET(PCI_EXP_DEVCAP_L1, dev->devcap);
6106 dev->devcap |= FIELD_PREP(PCI_EXP_DEVCAP_L1, 7);
6107 pci_info(dev, "ASPM: overriding L1 acceptable latency from %#x to 0x7\n",
6111 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f80, aspm_l1_acceptable_latency);
6112 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f81, aspm_l1_acceptable_latency);
6113 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f82, aspm_l1_acceptable_latency);
6114 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f83, aspm_l1_acceptable_latency);
6115 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f84, aspm_l1_acceptable_latency);
6116 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f85, aspm_l1_acceptable_latency);
6117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f86, aspm_l1_acceptable_latency);
6118 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f87, aspm_l1_acceptable_latency);
6119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f88, aspm_l1_acceptable_latency);
6120 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5690, aspm_l1_acceptable_latency);
6121 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5691, aspm_l1_acceptable_latency);
6122 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5692, aspm_l1_acceptable_latency);
6123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5693, aspm_l1_acceptable_latency);
6124 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5694, aspm_l1_acceptable_latency);
6125 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5695, aspm_l1_acceptable_latency);
6126 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a0, aspm_l1_acceptable_latency);
6127 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a1, aspm_l1_acceptable_latency);
6128 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a2, aspm_l1_acceptable_latency);
6129 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a3, aspm_l1_acceptable_latency);
6130 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a4, aspm_l1_acceptable_latency);
6131 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a5, aspm_l1_acceptable_latency);
6132 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a6, aspm_l1_acceptable_latency);
6133 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b0, aspm_l1_acceptable_latency);
6134 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b1, aspm_l1_acceptable_latency);
6135 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c0, aspm_l1_acceptable_latency);
6136 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency);
6139 #ifdef CONFIG_PCIE_DPC
6141 * Intel Ice Lake, Tiger Lake and Alder Lake BIOS has a bug that clears
6142 * the DPC RP PIO Log Size of the integrated Thunderbolt PCIe Root
6145 static void dpc_log_size(struct pci_dev *dev)
6149 dpc = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC);
6153 pci_read_config_word(dev, dpc + PCI_EXP_DPC_CAP, &val);
6154 if (!(val & PCI_EXP_DPC_CAP_RP_EXT))
6157 if (!((val & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8)) {
6158 pci_info(dev, "Overriding RP PIO Log Size to 4\n");
6159 dev->dpc_rp_log_size = 4;
6162 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x461f, dpc_log_size);
6163 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x462f, dpc_log_size);
6164 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x463f, dpc_log_size);
6165 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x466e, dpc_log_size);
6166 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1d, dpc_log_size);
6167 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1f, dpc_log_size);
6168 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a21, dpc_log_size);
6169 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a23, dpc_log_size);
6170 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a23, dpc_log_size);
6171 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a25, dpc_log_size);
6172 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a27, dpc_log_size);
6173 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a29, dpc_log_size);
6174 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size);
6175 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size);
6176 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size);
6177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size);
6181 * For a PCI device with multiple downstream devices, its driver may use
6182 * a flattened device tree to describe the downstream devices.
6183 * To overlay the flattened device tree, the PCI device and all its ancestor
6184 * devices need to have device tree nodes on system base device tree. Thus,
6185 * before driver probing, it might need to add a device tree node as the final
6188 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node);
6189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node);
6190 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REDHAT, 0x0005, of_pci_make_dev_node);