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
693 * claim it. The same applies on the VanGogh platform device ([1022:163a]).
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_dwc_class(struct pci_dev *pdev)
703 u32 class = pdev->class;
705 if (class != PCI_CLASS_SERIAL_USB_DEVICE) {
706 /* Use "USB Device (not host controller)" class */
707 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
709 "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
713 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
714 quirk_amd_dwc_class);
715 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VANGOGH_USB,
716 quirk_amd_dwc_class);
719 * Synopsys USB 3.x host HAPS platform has a class code of
720 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
721 * devices should use dwc3-haps driver. Change these devices' class code to
722 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming
725 static void quirk_synopsys_haps(struct pci_dev *pdev)
727 u32 class = pdev->class;
729 switch (pdev->device) {
730 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
731 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
732 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31:
733 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
734 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
739 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
740 PCI_CLASS_SERIAL_USB_XHCI, 0,
741 quirk_synopsys_haps);
744 * Let's make the southbridge information explicit instead of having to
745 * worry about people probing the ACPI areas, for example.. (Yes, it
746 * happens, and if you read the wrong ACPI register it will put the machine
747 * to sleep with no way of waking it up again. Bummer).
749 * ALI M7101: Two IO regions pointed to by words at
750 * 0xE0 (64 bytes of ACPI registers)
751 * 0xE2 (32 bytes of SMB registers)
753 static void quirk_ali7101_acpi(struct pci_dev *dev)
755 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
756 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
758 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
760 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
763 u32 mask, size, base;
765 pci_read_config_dword(dev, port, &devres);
766 if ((devres & enable) != enable)
768 mask = (devres >> 16) & 15;
769 base = devres & 0xffff;
772 unsigned int bit = size >> 1;
773 if ((bit & mask) == bit)
778 * For now we only print it out. Eventually we'll want to
779 * reserve it (at least if it's in the 0x1000+ range), but
780 * let's get enough confirmation reports first.
783 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
786 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
789 u32 mask, size, base;
791 pci_read_config_dword(dev, port, &devres);
792 if ((devres & enable) != enable)
794 base = devres & 0xffff0000;
795 mask = (devres & 0x3f) << 16;
798 unsigned int bit = size >> 1;
799 if ((bit & mask) == bit)
805 * For now we only print it out. Eventually we'll want to
806 * reserve it, but let's get enough confirmation reports first.
809 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
813 * PIIX4 ACPI: Two IO regions pointed to by longwords at
814 * 0x40 (64 bytes of ACPI registers)
815 * 0x90 (16 bytes of SMB registers)
816 * and a few strange programmable PIIX4 device resources.
818 static void quirk_piix4_acpi(struct pci_dev *dev)
822 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
823 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
825 /* Device resource A has enables for some of the other ones */
826 pci_read_config_dword(dev, 0x5c, &res_a);
828 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
829 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
831 /* Device resource D is just bitfields for static resources */
833 /* Device 12 enabled? */
834 if (res_a & (1 << 29)) {
835 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
836 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
838 /* Device 13 enabled? */
839 if (res_a & (1 << 30)) {
840 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
841 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
843 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
844 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
846 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
847 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
849 #define ICH_PMBASE 0x40
850 #define ICH_ACPI_CNTL 0x44
851 #define ICH4_ACPI_EN 0x10
852 #define ICH6_ACPI_EN 0x80
853 #define ICH4_GPIOBASE 0x58
854 #define ICH4_GPIO_CNTL 0x5c
855 #define ICH4_GPIO_EN 0x10
856 #define ICH6_GPIOBASE 0x48
857 #define ICH6_GPIO_CNTL 0x4c
858 #define ICH6_GPIO_EN 0x10
861 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
862 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
863 * 0x58 (64 bytes of GPIO I/O space)
865 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
870 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
871 * with low legacy (and fixed) ports. We don't know the decoding
872 * priority and can't tell whether the legacy device or the one created
873 * here is really at that address. This happens on boards with broken
876 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
877 if (enable & ICH4_ACPI_EN)
878 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
879 "ICH4 ACPI/GPIO/TCO");
881 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
882 if (enable & ICH4_GPIO_EN)
883 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
888 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
889 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
890 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
891 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
892 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
895 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
897 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
901 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
902 if (enable & ICH6_ACPI_EN)
903 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
904 "ICH6 ACPI/GPIO/TCO");
906 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
907 if (enable & ICH6_GPIO_EN)
908 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
912 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
913 const char *name, int dynsize)
918 pci_read_config_dword(dev, reg, &val);
926 * This is not correct. It is 16, 32 or 64 bytes depending on
927 * register D31:F0:ADh bits 5:4.
929 * But this gets us at least _part_ of it.
938 * Just print it out for now. We should reserve it after more
941 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
944 static void quirk_ich6_lpc(struct pci_dev *dev)
946 /* Shared ACPI/GPIO decode with all ICH6+ */
947 ich6_lpc_acpi_gpio(dev);
949 /* ICH6-specific generic IO decode */
950 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
951 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
953 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
954 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
956 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg,
962 pci_read_config_dword(dev, reg, &val);
968 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */
970 mask = (val >> 16) & 0xfc;
974 * Just print it out for now. We should reserve it after more
977 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
980 /* ICH7-10 has the same common LPC generic IO decode registers */
981 static void quirk_ich7_lpc(struct pci_dev *dev)
983 /* We share the common ACPI/GPIO decode with ICH6 */
984 ich6_lpc_acpi_gpio(dev);
986 /* And have 4 ICH7+ generic decodes */
987 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
988 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
989 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
990 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
992 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
993 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
995 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
996 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
997 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
998 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
999 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
1000 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
1001 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
1002 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
1003 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
1004 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
1007 * VIA ACPI: One IO region pointed to by longword at
1008 * 0x48 or 0x20 (256 bytes of ACPI registers)
1010 static void quirk_vt82c586_acpi(struct pci_dev *dev)
1012 if (dev->revision & 0x10)
1013 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
1016 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
1019 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
1020 * 0x48 (256 bytes of ACPI registers)
1021 * 0x70 (128 bytes of hardware monitoring register)
1022 * 0x90 (16 bytes of SMB registers)
1024 static void quirk_vt82c686_acpi(struct pci_dev *dev)
1026 quirk_vt82c586_acpi(dev);
1028 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
1031 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
1033 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
1036 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
1037 * 0x88 (128 bytes of power management registers)
1038 * 0xd0 (16 bytes of SMB registers)
1040 static void quirk_vt8235_acpi(struct pci_dev *dev)
1042 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
1043 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
1045 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
1048 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast
1049 * back-to-back: Disable fast back-to-back on the secondary bus segment
1051 static void quirk_xio2000a(struct pci_dev *dev)
1053 struct pci_dev *pdev;
1056 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
1057 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
1058 pci_read_config_word(pdev, PCI_COMMAND, &command);
1059 if (command & PCI_COMMAND_FAST_BACK)
1060 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
1063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
1066 #ifdef CONFIG_X86_IO_APIC
1068 #include <asm/io_apic.h>
1071 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
1072 * devices to the external APIC.
1074 * TODO: When we have device-specific interrupt routers, this code will go
1077 static void quirk_via_ioapic(struct pci_dev *dev)
1082 tmp = 0; /* nothing routed to external APIC */
1084 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
1086 pci_info(dev, "%s VIA external APIC routing\n",
1087 tmp ? "Enabling" : "Disabling");
1089 /* Offset 0x58: External APIC IRQ output control */
1090 pci_write_config_byte(dev, 0x58, tmp);
1092 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1093 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1096 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
1097 * This leads to doubled level interrupt rates.
1098 * Set this bit to get rid of cycle wastage.
1099 * Otherwise uncritical.
1101 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
1104 #define BYPASS_APIC_DEASSERT 8
1106 pci_read_config_byte(dev, 0x5B, &misc_control2);
1107 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
1108 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
1109 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
1112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1113 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1116 * The AMD IO-APIC can hang the box when an APIC IRQ is masked.
1117 * We check all revs >= B0 (yet not in the pre production!) as the bug
1118 * is currently marked NoFix
1120 * We have multiple reports of hangs with this chipset that went away with
1121 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1122 * of course. However the advice is demonstrably good even if so.
1124 static void quirk_amd_ioapic(struct pci_dev *dev)
1126 if (dev->revision >= 0x02) {
1127 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1128 pci_warn(dev, " : booting with the \"noapic\" option\n");
1131 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1132 #endif /* CONFIG_X86_IO_APIC */
1134 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
1136 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
1138 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */
1139 if (dev->subsystem_device == 0xa118)
1140 dev->sriov->link = dev->devfn;
1142 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
1146 * Some settings of MMRBC can lead to data corruption so block changes.
1147 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
1149 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
1151 if (dev->subordinate && dev->revision <= 0x12) {
1152 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
1154 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
1157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1160 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up
1161 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register
1162 * at all. Therefore it seems like setting the pci_dev's IRQ to the value
1163 * of the ACPI SCI interrupt is only done for convenience.
1166 static void quirk_via_acpi(struct pci_dev *d)
1170 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */
1171 pci_read_config_byte(d, 0x42, &irq);
1173 if (irq && (irq != 2))
1176 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
1177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1179 /* VIA bridges which have VLink */
1180 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
1182 static void quirk_via_bridge(struct pci_dev *dev)
1184 /* See what bridge we have and find the device ranges */
1185 switch (dev->device) {
1186 case PCI_DEVICE_ID_VIA_82C686:
1188 * The VT82C686 is special; it attaches to PCI and can have
1189 * any device number. All its subdevices are functions of
1190 * that single device.
1192 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
1193 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
1195 case PCI_DEVICE_ID_VIA_8237:
1196 case PCI_DEVICE_ID_VIA_8237A:
1197 via_vlink_dev_lo = 15;
1199 case PCI_DEVICE_ID_VIA_8235:
1200 via_vlink_dev_lo = 16;
1202 case PCI_DEVICE_ID_VIA_8231:
1203 case PCI_DEVICE_ID_VIA_8233_0:
1204 case PCI_DEVICE_ID_VIA_8233A:
1205 case PCI_DEVICE_ID_VIA_8233C_0:
1206 via_vlink_dev_lo = 17;
1210 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
1211 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
1212 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
1213 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
1214 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
1215 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
1216 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
1217 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
1220 * quirk_via_vlink - VIA VLink IRQ number update
1223 * If the device we are dealing with is on a PIC IRQ we need to ensure that
1224 * the IRQ line register which usually is not relevant for PCI cards, is
1225 * actually written so that interrupts get sent to the right place.
1227 * We only do this on systems where a VIA south bridge was detected, and
1228 * only for VIA devices on the motherboard (see quirk_via_bridge above).
1230 static void quirk_via_vlink(struct pci_dev *dev)
1234 /* Check if we have VLink at all */
1235 if (via_vlink_dev_lo == -1)
1240 /* Don't quirk interrupts outside the legacy IRQ range */
1241 if (!new_irq || new_irq > 15)
1244 /* Internal device ? */
1245 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
1246 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1250 * This is an internal VLink device on a PIC interrupt. The BIOS
1251 * ought to have set this but may not have, so we redo it.
1253 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
1254 if (new_irq != irq) {
1255 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n",
1257 udelay(15); /* unknown if delay really needed */
1258 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
1261 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
1264 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID
1265 * of VT82C597 for backward compatibility. We need to switch it off to be
1266 * able to recognize the real type of the chip.
1268 static void quirk_vt82c598_id(struct pci_dev *dev)
1270 pci_write_config_byte(dev, 0xfc, 0);
1271 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
1273 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1276 * CardBus controllers have a legacy base address that enables them to
1277 * respond as i82365 pcmcia controllers. We don't want them to do this
1278 * even if the Linux CardBus driver is not loaded, because the Linux i82365
1279 * driver does not (and should not) handle CardBus.
1281 static void quirk_cardbus_legacy(struct pci_dev *dev)
1283 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1285 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1286 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1287 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1288 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1291 * Following the PCI ordering rules is optional on the AMD762. I'm not sure
1292 * what the designers were smoking but let's not inhale...
1294 * To be fair to AMD, it follows the spec by default, it's BIOS people who
1297 static void quirk_amd_ordering(struct pci_dev *dev)
1300 pci_read_config_dword(dev, 0x4C, &pcic);
1301 if ((pcic & 6) != 6) {
1303 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1304 pci_write_config_dword(dev, 0x4C, pcic);
1305 pci_read_config_dword(dev, 0x84, &pcic);
1306 pcic |= (1 << 23); /* Required in this mode */
1307 pci_write_config_dword(dev, 0x84, pcic);
1310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1311 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1314 * DreamWorks-provided workaround for Dunord I-3000 problem
1316 * This card decodes and responds to addresses not apparently assigned to
1317 * it. We force a larger allocation to ensure that nothing gets put too
1320 static void quirk_dunord(struct pci_dev *dev)
1322 struct resource *r = &dev->resource[1];
1324 r->flags |= IORESOURCE_UNSET;
1328 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1331 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive
1332 * decoding (transparent), and does indicate this in the ProgIf.
1333 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01.
1335 static void quirk_transparent_bridge(struct pci_dev *dev)
1337 dev->transparent = 1;
1339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1343 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce
1344 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets
1345 * found at http://www.national.com/analog for info on what these bits do.
1346 * <christer@weinigel.se>
1348 static void quirk_mediagx_master(struct pci_dev *dev)
1352 pci_read_config_byte(dev, 0x41, ®);
1355 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1357 pci_write_config_byte(dev, 0x41, reg);
1360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1361 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1364 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but
1365 * in the odd case it is not the results are corruption hence the presence
1368 static void quirk_disable_pxb(struct pci_dev *pdev)
1372 if (pdev->revision != 0x04) /* Only C0 requires this */
1374 pci_read_config_word(pdev, 0x40, &config);
1375 if (config & (1<<6)) {
1377 pci_write_config_word(pdev, 0x40, config);
1378 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n");
1381 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1382 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1384 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1386 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1389 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1391 pci_read_config_byte(pdev, 0x40, &tmp);
1392 pci_write_config_byte(pdev, 0x40, tmp|1);
1393 pci_write_config_byte(pdev, 0x9, 1);
1394 pci_write_config_byte(pdev, 0xa, 6);
1395 pci_write_config_byte(pdev, 0x40, tmp);
1397 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1398 pci_info(pdev, "set SATA to AHCI mode\n");
1401 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1402 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1403 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1404 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1405 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1406 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1407 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1408 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1410 /* Serverworks CSB5 IDE does not fully support native mode */
1411 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1414 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1418 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1419 /* PCI layer will sort out resources */
1422 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1424 /* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */
1425 static void quirk_ide_samemode(struct pci_dev *pdev)
1429 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1431 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1432 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n");
1435 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1438 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1440 /* Some ATA devices break if put into D3 */
1441 static void quirk_no_ata_d3(struct pci_dev *pdev)
1443 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1445 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1446 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1447 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1448 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1449 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1450 /* ALi loses some register settings that we cannot then restore */
1451 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1452 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1453 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1454 occur when mode detecting */
1455 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1456 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1459 * This was originally an Alpha-specific thing, but it really fits here.
1460 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1462 static void quirk_eisa_bridge(struct pci_dev *dev)
1464 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1469 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1470 * is not activated. The myth is that Asus said that they do not want the
1471 * users to be irritated by just another PCI Device in the Win98 device
1472 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1473 * package 2.7.0 for details)
1475 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1476 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1477 * becomes necessary to do this tweak in two steps -- the chosen trigger
1478 * is either the Host bridge (preferred) or on-board VGA controller.
1480 * Note that we used to unhide the SMBus that way on Toshiba laptops
1481 * (Satellite A40 and Tecra M2) but then found that the thermal management
1482 * was done by SMM code, which could cause unsynchronized concurrent
1483 * accesses to the SMBus registers, with potentially bad effects. Thus you
1484 * should be very careful when adding new entries: if SMM is accessing the
1485 * Intel SMBus, this is a very good reason to leave it hidden.
1487 * Likewise, many recent laptops use ACPI for thermal management. If the
1488 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1489 * natively, and keeping the SMBus hidden is the right thing to do. If you
1490 * are about to add an entry in the table below, please first disassemble
1491 * the DSDT and double-check that there is no code accessing the SMBus.
1493 static int asus_hides_smbus;
1495 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1497 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1498 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1499 switch (dev->subsystem_device) {
1500 case 0x8025: /* P4B-LX */
1501 case 0x8070: /* P4B */
1502 case 0x8088: /* P4B533 */
1503 case 0x1626: /* L3C notebook */
1504 asus_hides_smbus = 1;
1506 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1507 switch (dev->subsystem_device) {
1508 case 0x80b1: /* P4GE-V */
1509 case 0x80b2: /* P4PE */
1510 case 0x8093: /* P4B533-V */
1511 asus_hides_smbus = 1;
1513 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1514 switch (dev->subsystem_device) {
1515 case 0x8030: /* P4T533 */
1516 asus_hides_smbus = 1;
1518 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1519 switch (dev->subsystem_device) {
1520 case 0x8070: /* P4G8X Deluxe */
1521 asus_hides_smbus = 1;
1523 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1524 switch (dev->subsystem_device) {
1525 case 0x80c9: /* PU-DLS */
1526 asus_hides_smbus = 1;
1528 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1529 switch (dev->subsystem_device) {
1530 case 0x1751: /* M2N notebook */
1531 case 0x1821: /* M5N notebook */
1532 case 0x1897: /* A6L notebook */
1533 asus_hides_smbus = 1;
1535 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1536 switch (dev->subsystem_device) {
1537 case 0x184b: /* W1N notebook */
1538 case 0x186a: /* M6Ne notebook */
1539 asus_hides_smbus = 1;
1541 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1542 switch (dev->subsystem_device) {
1543 case 0x80f2: /* P4P800-X */
1544 asus_hides_smbus = 1;
1546 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1547 switch (dev->subsystem_device) {
1548 case 0x1882: /* M6V notebook */
1549 case 0x1977: /* A6VA notebook */
1550 asus_hides_smbus = 1;
1552 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1553 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1554 switch (dev->subsystem_device) {
1555 case 0x088C: /* HP Compaq nc8000 */
1556 case 0x0890: /* HP Compaq nc6000 */
1557 asus_hides_smbus = 1;
1559 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1560 switch (dev->subsystem_device) {
1561 case 0x12bc: /* HP D330L */
1562 case 0x12bd: /* HP D530 */
1563 case 0x006a: /* HP Compaq nx9500 */
1564 asus_hides_smbus = 1;
1566 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1567 switch (dev->subsystem_device) {
1568 case 0x12bf: /* HP xw4100 */
1569 asus_hides_smbus = 1;
1571 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1572 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1573 switch (dev->subsystem_device) {
1574 case 0xC00C: /* Samsung P35 notebook */
1575 asus_hides_smbus = 1;
1577 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1578 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1579 switch (dev->subsystem_device) {
1580 case 0x0058: /* Compaq Evo N620c */
1581 asus_hides_smbus = 1;
1583 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1584 switch (dev->subsystem_device) {
1585 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1586 /* Motherboard doesn't have Host bridge
1587 * subvendor/subdevice IDs, therefore checking
1588 * its on-board VGA controller */
1589 asus_hides_smbus = 1;
1591 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1592 switch (dev->subsystem_device) {
1593 case 0x00b8: /* Compaq Evo D510 CMT */
1594 case 0x00b9: /* Compaq Evo D510 SFF */
1595 case 0x00ba: /* Compaq Evo D510 USDT */
1596 /* Motherboard doesn't have Host bridge
1597 * subvendor/subdevice IDs and on-board VGA
1598 * controller is disabled if an AGP card is
1599 * inserted, therefore checking USB UHCI
1601 asus_hides_smbus = 1;
1603 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1604 switch (dev->subsystem_device) {
1605 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1606 /* Motherboard doesn't have host bridge
1607 * subvendor/subdevice IDs, therefore checking
1608 * its on-board VGA controller */
1609 asus_hides_smbus = 1;
1613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1616 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1617 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1618 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1619 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1620 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1621 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1622 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1624 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1625 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1626 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1628 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1632 if (likely(!asus_hides_smbus))
1635 pci_read_config_word(dev, 0xF2, &val);
1637 pci_write_config_word(dev, 0xF2, val & (~0x8));
1638 pci_read_config_word(dev, 0xF2, &val);
1640 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1643 pci_info(dev, "Enabled i801 SMBus device\n");
1646 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1647 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1648 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1649 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1650 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1651 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1652 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1653 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1654 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1655 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1656 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1657 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1658 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1659 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1661 /* It appears we just have one such device. If not, we have a warning */
1662 static void __iomem *asus_rcba_base;
1663 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1667 if (likely(!asus_hides_smbus))
1669 WARN_ON(asus_rcba_base);
1671 pci_read_config_dword(dev, 0xF0, &rcba);
1672 /* use bits 31:14, 16 kB aligned */
1673 asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000);
1674 if (asus_rcba_base == NULL)
1678 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1682 if (likely(!asus_hides_smbus || !asus_rcba_base))
1685 /* read the Function Disable register, dword mode only */
1686 val = readl(asus_rcba_base + 0x3418);
1688 /* enable the SMBus device */
1689 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418);
1692 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1694 if (likely(!asus_hides_smbus || !asus_rcba_base))
1697 iounmap(asus_rcba_base);
1698 asus_rcba_base = NULL;
1699 pci_info(dev, "Enabled ICH6/i801 SMBus device\n");
1702 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1704 asus_hides_smbus_lpc_ich6_suspend(dev);
1705 asus_hides_smbus_lpc_ich6_resume_early(dev);
1706 asus_hides_smbus_lpc_ich6_resume(dev);
1708 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1709 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1710 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1711 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1713 /* SiS 96x south bridge: BIOS typically hides SMBus device... */
1714 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1717 pci_read_config_byte(dev, 0x77, &val);
1719 pci_info(dev, "Enabling SiS 96x SMBus\n");
1720 pci_write_config_byte(dev, 0x77, val & ~0x10);
1723 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1724 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1725 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1726 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1727 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1728 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1729 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1730 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1733 * ... This is further complicated by the fact that some SiS96x south
1734 * bridges pretend to be 85C503/5513 instead. In that case see if we
1735 * spotted a compatible north bridge to make sure.
1736 * (pci_find_device() doesn't work yet)
1738 * We can also enable the sis96x bit in the discovery register..
1740 #define SIS_DETECT_REGISTER 0x40
1742 static void quirk_sis_503(struct pci_dev *dev)
1747 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1748 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1749 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1750 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1751 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1756 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case
1757 * it has already been processed. (Depends on link order, which is
1758 * apparently not guaranteed)
1760 dev->device = devid;
1761 quirk_sis_96x_smbus(dev);
1763 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1764 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1767 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1768 * and MC97 modem controller are disabled when a second PCI soundcard is
1769 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1772 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1775 int asus_hides_ac97 = 0;
1777 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1778 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1779 asus_hides_ac97 = 1;
1782 if (!asus_hides_ac97)
1785 pci_read_config_byte(dev, 0x50, &val);
1787 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1788 pci_read_config_byte(dev, 0x50, &val);
1790 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1793 pci_info(dev, "Enabled onboard AC97/MC97 devices\n");
1796 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1797 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1799 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1802 * If we are using libata we can drive this chip properly but must do this
1803 * early on to make the additional device appear during the PCI scanning.
1805 static void quirk_jmicron_ata(struct pci_dev *pdev)
1807 u32 conf1, conf5, class;
1810 /* Only poke fn 0 */
1811 if (PCI_FUNC(pdev->devfn))
1814 pci_read_config_dword(pdev, 0x40, &conf1);
1815 pci_read_config_dword(pdev, 0x80, &conf5);
1817 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1818 conf5 &= ~(1 << 24); /* Clear bit 24 */
1820 switch (pdev->device) {
1821 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1822 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1823 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1824 /* The controller should be in single function ahci mode */
1825 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1828 case PCI_DEVICE_ID_JMICRON_JMB365:
1829 case PCI_DEVICE_ID_JMICRON_JMB366:
1830 /* Redirect IDE second PATA port to the right spot */
1833 case PCI_DEVICE_ID_JMICRON_JMB361:
1834 case PCI_DEVICE_ID_JMICRON_JMB363:
1835 case PCI_DEVICE_ID_JMICRON_JMB369:
1836 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1837 /* Set the class codes correctly and then direct IDE 0 */
1838 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1841 case PCI_DEVICE_ID_JMICRON_JMB368:
1842 /* The controller should be in single function IDE mode */
1843 conf1 |= 0x00C00000; /* Set 22, 23 */
1847 pci_write_config_dword(pdev, 0x40, conf1);
1848 pci_write_config_dword(pdev, 0x80, conf5);
1850 /* Update pdev accordingly */
1851 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1852 pdev->hdr_type = hdr & 0x7f;
1853 pdev->multifunction = !!(hdr & 0x80);
1855 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1856 pdev->class = class >> 8;
1858 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1859 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1860 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1861 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1862 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1863 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1864 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1865 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1866 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1867 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1868 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1869 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1870 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1871 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1872 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1873 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1874 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1875 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1879 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1881 if (dev->multifunction) {
1882 device_disable_async_suspend(&dev->dev);
1883 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1886 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1887 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1888 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1889 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1891 #ifdef CONFIG_X86_IO_APIC
1892 static void quirk_alder_ioapic(struct pci_dev *pdev)
1896 if ((pdev->class >> 8) != 0xff00)
1900 * The first BAR is the location of the IO-APIC... we must
1901 * not touch this (and it's already covered by the fixmap), so
1902 * forcibly insert it into the resource tree.
1904 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1905 insert_resource(&iomem_resource, &pdev->resource[0]);
1908 * The next five BARs all seem to be rubbish, so just clean
1911 for (i = 1; i < PCI_STD_NUM_BARS; i++)
1912 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1914 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1917 static void quirk_no_msi(struct pci_dev *dev)
1919 pci_info(dev, "avoiding MSI to work around a hardware defect\n");
1922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4386, quirk_no_msi);
1923 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4387, quirk_no_msi);
1924 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4388, quirk_no_msi);
1925 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4389, quirk_no_msi);
1926 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438a, quirk_no_msi);
1927 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438b, quirk_no_msi);
1929 static void quirk_pcie_mch(struct pci_dev *pdev)
1933 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1934 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1935 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1937 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1940 * HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
1941 * actually on the AMBA bus. These fake PCI devices can support SVA via
1942 * SMMU stall feature, by setting dma-can-stall for ACPI platforms.
1944 * Normally stalling must not be enabled for PCI devices, since it would
1945 * break the PCI requirement for free-flowing writes and may lead to
1946 * deadlock. We expect PCI devices to support ATS and PRI if they want to
1947 * be fault-tolerant, so there's no ACPI binding to describe anything else,
1948 * even when a "PCI" device turns out to be a regular old SoC device
1949 * dressed up as a RCiEP and normal rules don't apply.
1951 static void quirk_huawei_pcie_sva(struct pci_dev *pdev)
1953 struct property_entry properties[] = {
1954 PROPERTY_ENTRY_BOOL("dma-can-stall"),
1958 if (pdev->revision != 0x21 && pdev->revision != 0x30)
1961 pdev->pasid_no_tlp = 1;
1964 * Set the dma-can-stall property on ACPI platforms. Device tree
1965 * can set it directly.
1967 if (!pdev->dev.of_node &&
1968 device_create_managed_software_node(&pdev->dev, properties, NULL))
1969 pci_warn(pdev, "could not add stall property");
1971 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva);
1972 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva);
1973 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva);
1974 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva);
1975 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva);
1976 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva);
1979 * It's possible for the MSI to get corrupted if SHPC and ACPI are used
1980 * together on certain PXH-based systems.
1982 static void quirk_pcie_pxh(struct pci_dev *dev)
1985 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n");
1987 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1988 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1989 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1990 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1991 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1994 * Some Intel PCI Express chipsets have trouble with downstream device
1997 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1999 pci_pm_d3hot_delay = 120;
2002 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
2003 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
2004 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
2005 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
2006 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
2007 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
2008 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
2009 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
2010 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
2011 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
2012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
2013 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
2014 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
2015 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
2016 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
2017 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
2018 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
2019 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
2020 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
2021 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
2022 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
2024 static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay)
2026 if (dev->d3hot_delay >= delay)
2029 dev->d3hot_delay = delay;
2030 pci_info(dev, "extending delay after power-on from D3hot to %d msec\n",
2034 static void quirk_radeon_pm(struct pci_dev *dev)
2036 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
2037 dev->subsystem_device == 0x00e2)
2038 quirk_d3hot_delay(dev, 20);
2040 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
2043 * NVIDIA Ampere-based HDA controllers can wedge the whole device if a bus
2044 * reset is performed too soon after transition to D0, extend d3hot_delay
2045 * to previous effective default for all NVIDIA HDA controllers.
2047 static void quirk_nvidia_hda_pm(struct pci_dev *dev)
2049 quirk_d3hot_delay(dev, 20);
2051 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
2052 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8,
2053 quirk_nvidia_hda_pm);
2056 * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle.
2057 * https://bugzilla.kernel.org/show_bug.cgi?id=205587
2059 * The kernel attempts to transition these devices to D3cold, but that seems
2060 * to be ineffective on the platforms in question; the PCI device appears to
2061 * remain on in D3hot state. The D3hot-to-D0 transition then requires an
2062 * extended delay in order to succeed.
2064 static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev)
2066 quirk_d3hot_delay(dev, 20);
2068 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot);
2069 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot);
2070 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot);
2072 #ifdef CONFIG_X86_IO_APIC
2073 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
2075 noioapicreroute = 1;
2076 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
2081 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
2083 * Systems to exclude from boot interrupt reroute quirks
2086 .callback = dmi_disable_ioapicreroute,
2087 .ident = "ASUSTek Computer INC. M2N-LR",
2089 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
2090 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
2097 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
2098 * remap the original interrupt in the Linux kernel to the boot interrupt, so
2099 * that a PCI device's interrupt handler is installed on the boot interrupt
2102 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
2104 dmi_check_system(boot_interrupt_dmi_table);
2105 if (noioapicquirk || noioapicreroute)
2108 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
2109 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n",
2110 dev->vendor, dev->device);
2112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
2113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
2114 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2115 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2116 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2117 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2118 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2119 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2120 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
2121 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
2122 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
2123 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
2124 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
2125 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
2126 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
2127 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
2130 * On some chipsets we can disable the generation of legacy INTx boot
2135 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no
2136 * 300641-004US, section 5.7.3.
2138 * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003.
2139 * Core IO on Xeon E5 v2, see Intel order no 329188-003.
2140 * Core IO on Xeon E7 v2, see Intel order no 329595-002.
2141 * Core IO on Xeon E5 v3, see Intel order no 330784-003.
2142 * Core IO on Xeon E7 v3, see Intel order no 332315-001US.
2143 * Core IO on Xeon E5 v4, see Intel order no 333810-002US.
2144 * Core IO on Xeon E7 v4, see Intel order no 332315-001US.
2145 * Core IO on Xeon D-1500, see Intel order no 332051-001.
2146 * Core IO on Xeon Scalable, see Intel order no 610950.
2148 #define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */
2149 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
2151 #define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */
2152 #define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25)
2154 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
2156 u16 pci_config_word;
2157 u32 pci_config_dword;
2162 switch (dev->device) {
2163 case PCI_DEVICE_ID_INTEL_ESB_10:
2164 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2166 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
2167 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2170 case 0x3c28: /* Xeon E5 1600/2600/4600 */
2171 case 0x0e28: /* Xeon E5/E7 V2 */
2172 case 0x2f28: /* Xeon E5/E7 V3,V4 */
2173 case 0x6f28: /* Xeon D-1500 */
2174 case 0x2034: /* Xeon Scalable Family */
2175 pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2177 pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH;
2178 pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2184 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2185 dev->vendor, dev->device);
2188 * Device 29 Func 5 Device IDs of IO-APIC
2189 * containing ABAR—APIC1 Alternate Base Address Register
2191 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2192 quirk_disable_intel_boot_interrupt);
2193 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2194 quirk_disable_intel_boot_interrupt);
2197 * Device 5 Func 0 Device IDs of Core IO modules/hubs
2198 * containing Coherent Interface Protocol Interrupt Control
2200 * Device IDs obtained from volume 2 datasheets of commented
2203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28,
2204 quirk_disable_intel_boot_interrupt);
2205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28,
2206 quirk_disable_intel_boot_interrupt);
2207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28,
2208 quirk_disable_intel_boot_interrupt);
2209 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28,
2210 quirk_disable_intel_boot_interrupt);
2211 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034,
2212 quirk_disable_intel_boot_interrupt);
2213 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28,
2214 quirk_disable_intel_boot_interrupt);
2215 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28,
2216 quirk_disable_intel_boot_interrupt);
2217 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28,
2218 quirk_disable_intel_boot_interrupt);
2219 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28,
2220 quirk_disable_intel_boot_interrupt);
2221 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034,
2222 quirk_disable_intel_boot_interrupt);
2224 /* Disable boot interrupts on HT-1000 */
2225 #define BC_HT1000_FEATURE_REG 0x64
2226 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
2227 #define BC_HT1000_MAP_IDX 0xC00
2228 #define BC_HT1000_MAP_DATA 0xC01
2230 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
2232 u32 pci_config_dword;
2238 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
2239 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
2240 BC_HT1000_PIC_REGS_ENABLE);
2242 for (irq = 0x10; irq < 0x10 + 32; irq++) {
2243 outb(irq, BC_HT1000_MAP_IDX);
2244 outb(0x00, BC_HT1000_MAP_DATA);
2247 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
2249 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2250 dev->vendor, dev->device);
2252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2253 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2255 /* Disable boot interrupts on AMD and ATI chipsets */
2258 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
2259 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
2260 * (due to an erratum).
2262 #define AMD_813X_MISC 0x40
2263 #define AMD_813X_NOIOAMODE (1<<0)
2264 #define AMD_813X_REV_B1 0x12
2265 #define AMD_813X_REV_B2 0x13
2267 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
2269 u32 pci_config_dword;
2273 if ((dev->revision == AMD_813X_REV_B1) ||
2274 (dev->revision == AMD_813X_REV_B2))
2277 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
2278 pci_config_dword &= ~AMD_813X_NOIOAMODE;
2279 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
2281 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2282 dev->vendor, dev->device);
2284 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2285 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2286 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2287 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2289 #define AMD_8111_PCI_IRQ_ROUTING 0x56
2291 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
2293 u16 pci_config_word;
2298 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
2299 if (!pci_config_word) {
2300 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n",
2301 dev->vendor, dev->device);
2304 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
2305 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2306 dev->vendor, dev->device);
2308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2309 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2310 #endif /* CONFIG_X86_IO_APIC */
2313 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
2314 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
2315 * Re-allocate the region if needed...
2317 static void quirk_tc86c001_ide(struct pci_dev *dev)
2319 struct resource *r = &dev->resource[0];
2321 if (r->start & 0x8) {
2322 r->flags |= IORESOURCE_UNSET;
2327 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
2328 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
2329 quirk_tc86c001_ide);
2332 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the
2333 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
2334 * being read correctly if bit 7 of the base address is set.
2335 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
2336 * Re-allocate the regions to a 256-byte boundary if necessary.
2338 static void quirk_plx_pci9050(struct pci_dev *dev)
2342 /* Fixed in revision 2 (PCI 9052). */
2343 if (dev->revision >= 2)
2345 for (bar = 0; bar <= 1; bar++)
2346 if (pci_resource_len(dev, bar) == 0x80 &&
2347 (pci_resource_start(dev, bar) & 0x80)) {
2348 struct resource *r = &dev->resource[bar];
2349 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
2351 r->flags |= IORESOURCE_UNSET;
2356 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2359 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
2360 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
2361 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
2362 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
2364 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
2367 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
2368 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
2370 static void quirk_netmos(struct pci_dev *dev)
2372 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
2373 unsigned int num_serial = dev->subsystem_device & 0xf;
2376 * These Netmos parts are multiport serial devices with optional
2377 * parallel ports. Even when parallel ports are present, they
2378 * are identified as class SERIAL, which means the serial driver
2379 * will claim them. To prevent this, mark them as class OTHER.
2380 * These combo devices should be claimed by parport_serial.
2382 * The subdevice ID is of the form 0x00PS, where <P> is the number
2383 * of parallel ports and <S> is the number of serial ports.
2385 switch (dev->device) {
2386 case PCI_DEVICE_ID_NETMOS_9835:
2387 /* Well, this rule doesn't hold for the following 9835 device */
2388 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
2389 dev->subsystem_device == 0x0299)
2392 case PCI_DEVICE_ID_NETMOS_9735:
2393 case PCI_DEVICE_ID_NETMOS_9745:
2394 case PCI_DEVICE_ID_NETMOS_9845:
2395 case PCI_DEVICE_ID_NETMOS_9855:
2397 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
2398 dev->device, num_parallel, num_serial);
2399 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
2400 (dev->class & 0xff);
2404 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
2405 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
2407 static void quirk_e100_interrupt(struct pci_dev *dev)
2413 switch (dev->device) {
2414 /* PCI IDs taken from drivers/net/e100.c */
2416 case 0x1030 ... 0x1034:
2417 case 0x1038 ... 0x103E:
2418 case 0x1050 ... 0x1057:
2420 case 0x1064 ... 0x106B:
2421 case 0x1091 ... 0x1095:
2434 * Some firmware hands off the e100 with interrupts enabled,
2435 * which can cause a flood of interrupts if packets are
2436 * received before the driver attaches to the device. So
2437 * disable all e100 interrupts here. The driver will
2438 * re-enable them when it's ready.
2440 pci_read_config_word(dev, PCI_COMMAND, &command);
2442 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2446 * Check that the device is in the D0 power state. If it's not,
2447 * there is no point to look any further.
2450 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2451 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2455 /* Convert from PCI bus to resource space. */
2456 csr = ioremap(pci_resource_start(dev, 0), 8);
2458 pci_warn(dev, "Can't map e100 registers\n");
2462 cmd_hi = readb(csr + 3);
2464 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n");
2470 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2471 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2474 * The 82575 and 82598 may experience data corruption issues when transitioning
2475 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2477 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2479 pci_info(dev, "Disabling L0s\n");
2480 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2482 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2483 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2484 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2485 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2486 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2487 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2488 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2489 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2490 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2491 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2492 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2493 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2494 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2495 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2497 static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
2499 pci_info(dev, "Disabling ASPM L0s/L1\n");
2500 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
2504 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
2505 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
2506 * disable both L0s and L1 for now to be safe.
2508 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
2511 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2512 * Link bit cleared after starting the link retrain process to allow this
2513 * process to finish.
2515 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2516 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2518 static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2520 dev->clear_retrain_link = 1;
2521 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2523 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link);
2524 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link);
2525 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link);
2527 static void fixup_rev1_53c810(struct pci_dev *dev)
2529 u32 class = dev->class;
2532 * rev 1 ncr53c810 chips don't set the class at all which means
2533 * they don't get their resources remapped. Fix that here.
2538 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2539 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2542 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2544 /* Enable 1k I/O space granularity on the Intel P64H2 */
2545 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2549 pci_read_config_word(dev, 0x40, &en1k);
2552 pci_info(dev, "Enable I/O Space to 1KB granularity\n");
2553 dev->io_window_1k = 1;
2556 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2559 * Under some circumstances, AER is not linked with extended capabilities.
2560 * Force it to be linked by setting the corresponding control bit in the
2563 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2567 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2569 pci_write_config_byte(dev, 0xf41, b | 0x20);
2570 pci_info(dev, "Linking AER extended capability\n");
2574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2575 quirk_nvidia_ck804_pcie_aer_ext_cap);
2576 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2577 quirk_nvidia_ck804_pcie_aer_ext_cap);
2579 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2582 * Disable PCI Bus Parking and PCI Master read caching on CX700
2583 * which causes unspecified timing errors with a VT6212L on the PCI
2584 * bus leading to USB2.0 packet loss.
2586 * This quirk is only enabled if a second (on the external PCI bus)
2587 * VT6212L is found -- the CX700 core itself also contains a USB
2588 * host controller with the same PCI ID as the VT6212L.
2591 /* Count VT6212L instances */
2592 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2593 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2597 * p should contain the first (internal) VT6212L -- see if we have
2598 * an external one by searching again.
2600 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2605 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2607 /* Turn off PCI Bus Parking */
2608 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2610 pci_info(dev, "Disabling VIA CX700 PCI parking\n");
2614 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2616 /* Turn off PCI Master read caching */
2617 pci_write_config_byte(dev, 0x72, 0x0);
2619 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2620 pci_write_config_byte(dev, 0x75, 0x1);
2622 /* Disable "Read FIFO Timer" */
2623 pci_write_config_byte(dev, 0x77, 0x0);
2625 pci_info(dev, "Disabling VIA CX700 PCI caching\n");
2629 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2631 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2635 pci_read_config_dword(dev, 0xf4, &rev);
2637 /* Only CAP the MRRS if the device is a 5719 A0 */
2638 if (rev == 0x05719000) {
2639 int readrq = pcie_get_readrq(dev);
2641 pcie_set_readrq(dev, 2048);
2644 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2645 PCI_DEVICE_ID_TIGON3_5719,
2646 quirk_brcm_5719_limit_mrrs);
2649 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to
2650 * hide device 6 which configures the overflow device access containing the
2651 * DRBs - this is where we expose device 6.
2652 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2654 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2658 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2659 pci_info(dev, "Enabling MCH 'Overflow' Device\n");
2660 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2663 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2664 quirk_unhide_mch_dev6);
2665 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2666 quirk_unhide_mch_dev6);
2668 #ifdef CONFIG_PCI_MSI
2670 * Some chipsets do not support MSI. We cannot easily rely on setting
2671 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some
2672 * other buses controlled by the chipset even if Linux is not aware of it.
2673 * Instead of setting the flag on all buses in the machine, simply disable
2676 static void quirk_disable_all_msi(struct pci_dev *dev)
2679 pci_warn(dev, "MSI quirk detected; MSI disabled\n");
2681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2685 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2687 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2688 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2689 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi);
2691 /* Disable MSI on chipsets that are known to not support it */
2692 static void quirk_disable_msi(struct pci_dev *dev)
2694 if (dev->subordinate) {
2695 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2696 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2699 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2700 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2701 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2704 * The APC bridge device in AMD 780 family northbridges has some random
2705 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2706 * we use the possible vendor/device IDs of the host bridge for the
2707 * declared quirk, and search for the APC bridge by slot number.
2709 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2711 struct pci_dev *apc_bridge;
2713 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2715 if (apc_bridge->device == 0x9602)
2716 quirk_disable_msi(apc_bridge);
2717 pci_dev_put(apc_bridge);
2720 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2721 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2724 * Go through the list of HyperTransport capabilities and return 1 if a HT
2725 * MSI capability is found and enabled.
2727 static int msi_ht_cap_enabled(struct pci_dev *dev)
2729 int pos, ttl = PCI_FIND_CAP_TTL;
2731 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2732 while (pos && ttl--) {
2735 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2737 pci_info(dev, "Found %s HT MSI Mapping\n",
2738 flags & HT_MSI_FLAGS_ENABLE ?
2739 "enabled" : "disabled");
2740 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2743 pos = pci_find_next_ht_capability(dev, pos,
2744 HT_CAPTYPE_MSI_MAPPING);
2749 /* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */
2750 static void quirk_msi_ht_cap(struct pci_dev *dev)
2752 if (!msi_ht_cap_enabled(dev))
2753 quirk_disable_msi(dev);
2755 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2759 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported
2760 * if the MSI capability is set in any of these mappings.
2762 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2764 struct pci_dev *pdev;
2767 * Check HT MSI cap on this chipset and the root one. A single one
2768 * having MSI is enough to be sure that MSI is supported.
2770 pdev = pci_get_slot(dev->bus, 0);
2773 if (!msi_ht_cap_enabled(pdev))
2774 quirk_msi_ht_cap(dev);
2777 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2778 quirk_nvidia_ck804_msi_ht_cap);
2780 /* Force enable MSI mapping capability on HT bridges */
2781 static void ht_enable_msi_mapping(struct pci_dev *dev)
2783 int pos, ttl = PCI_FIND_CAP_TTL;
2785 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2786 while (pos && ttl--) {
2789 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2791 pci_info(dev, "Enabling HT MSI Mapping\n");
2793 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2794 flags | HT_MSI_FLAGS_ENABLE);
2796 pos = pci_find_next_ht_capability(dev, pos,
2797 HT_CAPTYPE_MSI_MAPPING);
2800 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2801 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2802 ht_enable_msi_mapping);
2803 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2804 ht_enable_msi_mapping);
2807 * The P5N32-SLI motherboards from Asus have a problem with MSI
2808 * for the MCP55 NIC. It is not yet determined whether the MSI problem
2809 * also affects other devices. As for now, turn off MSI for this device.
2811 static void nvenet_msi_disable(struct pci_dev *dev)
2813 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2816 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2817 strstr(board_name, "P5N32-E SLI"))) {
2818 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n");
2822 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2823 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2824 nvenet_msi_disable);
2827 * PCIe spec r6.0 sec 6.1.4.3 says that if MSI/MSI-X is enabled, the device
2828 * can't use INTx interrupts. Tegra's PCIe Root Ports don't generate MSI
2829 * interrupts for PME and AER events; instead only INTx interrupts are
2830 * generated. Though Tegra's PCIe Root Ports can generate MSI interrupts
2831 * for other events, since PCIe specification doesn't support using a mix of
2832 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port
2833 * service drivers registering their respective ISRs for MSIs.
2835 static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev)
2839 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0,
2840 PCI_CLASS_BRIDGE_PCI, 8,
2841 pci_quirk_nvidia_tegra_disable_rp_msi);
2842 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1,
2843 PCI_CLASS_BRIDGE_PCI, 8,
2844 pci_quirk_nvidia_tegra_disable_rp_msi);
2845 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2,
2846 PCI_CLASS_BRIDGE_PCI, 8,
2847 pci_quirk_nvidia_tegra_disable_rp_msi);
2848 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0,
2849 PCI_CLASS_BRIDGE_PCI, 8,
2850 pci_quirk_nvidia_tegra_disable_rp_msi);
2851 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1,
2852 PCI_CLASS_BRIDGE_PCI, 8,
2853 pci_quirk_nvidia_tegra_disable_rp_msi);
2854 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c,
2855 PCI_CLASS_BRIDGE_PCI, 8,
2856 pci_quirk_nvidia_tegra_disable_rp_msi);
2857 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d,
2858 PCI_CLASS_BRIDGE_PCI, 8,
2859 pci_quirk_nvidia_tegra_disable_rp_msi);
2860 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12,
2861 PCI_CLASS_BRIDGE_PCI, 8,
2862 pci_quirk_nvidia_tegra_disable_rp_msi);
2863 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13,
2864 PCI_CLASS_BRIDGE_PCI, 8,
2865 pci_quirk_nvidia_tegra_disable_rp_msi);
2866 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae,
2867 PCI_CLASS_BRIDGE_PCI, 8,
2868 pci_quirk_nvidia_tegra_disable_rp_msi);
2869 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf,
2870 PCI_CLASS_BRIDGE_PCI, 8,
2871 pci_quirk_nvidia_tegra_disable_rp_msi);
2872 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5,
2873 PCI_CLASS_BRIDGE_PCI, 8,
2874 pci_quirk_nvidia_tegra_disable_rp_msi);
2875 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6,
2876 PCI_CLASS_BRIDGE_PCI, 8,
2877 pci_quirk_nvidia_tegra_disable_rp_msi);
2878 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229a,
2879 PCI_CLASS_BRIDGE_PCI, 8,
2880 pci_quirk_nvidia_tegra_disable_rp_msi);
2881 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229c,
2882 PCI_CLASS_BRIDGE_PCI, 8,
2883 pci_quirk_nvidia_tegra_disable_rp_msi);
2884 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229e,
2885 PCI_CLASS_BRIDGE_PCI, 8,
2886 pci_quirk_nvidia_tegra_disable_rp_msi);
2889 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2890 * config register. This register controls the routing of legacy
2891 * interrupts from devices that route through the MCP55. If this register
2892 * is misprogrammed, interrupts are only sent to the BSP, unlike
2893 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2894 * having this register set properly prevents kdump from booting up
2895 * properly, so let's make sure that we have it set correctly.
2896 * Note that this is an undocumented register.
2898 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2902 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2905 pci_read_config_dword(dev, 0x74, &cfg);
2907 if (cfg & ((1 << 2) | (1 << 15))) {
2908 pr_info("Rewriting IRQ routing register on MCP55\n");
2909 cfg &= ~((1 << 2) | (1 << 15));
2910 pci_write_config_dword(dev, 0x74, cfg);
2913 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2914 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2915 nvbridge_check_legacy_irq_routing);
2916 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2917 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2918 nvbridge_check_legacy_irq_routing);
2920 static int ht_check_msi_mapping(struct pci_dev *dev)
2922 int pos, ttl = PCI_FIND_CAP_TTL;
2925 /* Check if there is HT MSI cap or enabled on this device */
2926 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2927 while (pos && ttl--) {
2932 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2934 if (flags & HT_MSI_FLAGS_ENABLE) {
2941 pos = pci_find_next_ht_capability(dev, pos,
2942 HT_CAPTYPE_MSI_MAPPING);
2948 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2950 struct pci_dev *dev;
2955 dev_no = host_bridge->devfn >> 3;
2956 for (i = dev_no + 1; i < 0x20; i++) {
2957 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2961 /* found next host bridge? */
2962 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2968 if (ht_check_msi_mapping(dev)) {
2979 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2980 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2982 static int is_end_of_ht_chain(struct pci_dev *dev)
2988 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2993 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2995 ctrl_off = ((flags >> 10) & 1) ?
2996 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2997 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2999 if (ctrl & (1 << 6))
3006 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
3008 struct pci_dev *host_bridge;
3013 dev_no = dev->devfn >> 3;
3014 for (i = dev_no; i >= 0; i--) {
3015 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
3019 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
3024 pci_dev_put(host_bridge);
3030 /* don't enable end_device/host_bridge with leaf directly here */
3031 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
3032 host_bridge_with_leaf(host_bridge))
3035 /* root did that ! */
3036 if (msi_ht_cap_enabled(host_bridge))
3039 ht_enable_msi_mapping(dev);
3042 pci_dev_put(host_bridge);
3045 static void ht_disable_msi_mapping(struct pci_dev *dev)
3047 int pos, ttl = PCI_FIND_CAP_TTL;
3049 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
3050 while (pos && ttl--) {
3053 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
3055 pci_info(dev, "Disabling HT MSI Mapping\n");
3057 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
3058 flags & ~HT_MSI_FLAGS_ENABLE);
3060 pos = pci_find_next_ht_capability(dev, pos,
3061 HT_CAPTYPE_MSI_MAPPING);
3065 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
3067 struct pci_dev *host_bridge;
3071 if (!pci_msi_enabled())
3074 /* check if there is HT MSI cap or enabled on this device */
3075 found = ht_check_msi_mapping(dev);
3082 * HT MSI mapping should be disabled on devices that are below
3083 * a non-HyperTransport host bridge. Locate the host bridge.
3085 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
3087 if (host_bridge == NULL) {
3088 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
3092 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
3094 /* Host bridge is to HT */
3096 /* it is not enabled, try to enable it */
3098 ht_enable_msi_mapping(dev);
3100 nv_ht_enable_msi_mapping(dev);
3105 /* HT MSI is not enabled */
3109 /* Host bridge is not to HT, disable HT MSI mapping on this device */
3110 ht_disable_msi_mapping(dev);
3113 pci_dev_put(host_bridge);
3116 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
3118 return __nv_msi_ht_cap_quirk(dev, 1);
3120 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
3121 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
3123 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
3125 return __nv_msi_ht_cap_quirk(dev, 0);
3127 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3128 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
3130 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
3132 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3135 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
3140 * SB700 MSI issue will be fixed at HW level from revision A21;
3141 * we need check PCI REVISION ID of SMBus controller to get SB700
3144 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
3149 if ((p->revision < 0x3B) && (p->revision >= 0x30))
3150 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3154 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
3156 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
3157 if (dev->revision < 0x18) {
3158 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n");
3159 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
3162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3163 PCI_DEVICE_ID_TIGON3_5780,
3164 quirk_msi_intx_disable_bug);
3165 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3166 PCI_DEVICE_ID_TIGON3_5780S,
3167 quirk_msi_intx_disable_bug);
3168 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3169 PCI_DEVICE_ID_TIGON3_5714,
3170 quirk_msi_intx_disable_bug);
3171 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3172 PCI_DEVICE_ID_TIGON3_5714S,
3173 quirk_msi_intx_disable_bug);
3174 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3175 PCI_DEVICE_ID_TIGON3_5715,
3176 quirk_msi_intx_disable_bug);
3177 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3178 PCI_DEVICE_ID_TIGON3_5715S,
3179 quirk_msi_intx_disable_bug);
3181 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
3182 quirk_msi_intx_disable_ati_bug);
3183 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
3184 quirk_msi_intx_disable_ati_bug);
3185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
3186 quirk_msi_intx_disable_ati_bug);
3187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
3188 quirk_msi_intx_disable_ati_bug);
3189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
3190 quirk_msi_intx_disable_ati_bug);
3192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
3193 quirk_msi_intx_disable_bug);
3194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
3195 quirk_msi_intx_disable_bug);
3196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
3197 quirk_msi_intx_disable_bug);
3199 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
3200 quirk_msi_intx_disable_bug);
3201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
3202 quirk_msi_intx_disable_bug);
3203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
3204 quirk_msi_intx_disable_bug);
3205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
3206 quirk_msi_intx_disable_bug);
3207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
3208 quirk_msi_intx_disable_bug);
3209 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
3210 quirk_msi_intx_disable_bug);
3211 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
3212 quirk_msi_intx_disable_qca_bug);
3213 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
3214 quirk_msi_intx_disable_qca_bug);
3215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
3216 quirk_msi_intx_disable_qca_bug);
3217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
3218 quirk_msi_intx_disable_qca_bug);
3219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
3220 quirk_msi_intx_disable_qca_bug);
3223 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it
3224 * should be disabled on platforms where the device (mistakenly) advertises it.
3226 * Notice that this quirk also disables MSI (which may work, but hasn't been
3227 * tested), since currently there is no standard way to disable only MSI-X.
3229 * The 0031 device id is reused for other non Root Port device types,
3230 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
3232 static void quirk_al_msi_disable(struct pci_dev *dev)
3235 pci_warn(dev, "Disabling MSI/MSI-X\n");
3237 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
3238 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable);
3239 #endif /* CONFIG_PCI_MSI */
3242 * Allow manual resource allocation for PCI hotplug bridges via
3243 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI
3244 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to
3245 * allocate resources when hotplug device is inserted and PCI bus is
3248 static void quirk_hotplug_bridge(struct pci_dev *dev)
3250 dev->is_hotplug_bridge = 1;
3252 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
3255 * This is a quirk for the Ricoh MMC controller found as a part of some
3256 * multifunction chips.
3258 * This is very similar and based on the ricoh_mmc driver written by
3259 * Philip Langdale. Thank you for these magic sequences.
3261 * These chips implement the four main memory card controllers (SD, MMC,
3262 * MS, xD) and one or both of CardBus or FireWire.
3264 * It happens that they implement SD and MMC support as separate
3265 * controllers (and PCI functions). The Linux SDHCI driver supports MMC
3266 * cards but the chip detects MMC cards in hardware and directs them to the
3267 * MMC controller - so the SDHCI driver never sees them.
3269 * To get around this, we must disable the useless MMC controller. At that
3270 * point, the SDHCI controller will start seeing them. It seems to be the
3271 * case that the relevant PCI registers to deactivate the MMC controller
3272 * live on PCI function 0, which might be the CardBus controller or the
3273 * FireWire controller, depending on the particular chip in question
3275 * This has to be done early, because as soon as we disable the MMC controller
3276 * other PCI functions shift up one level, e.g. function #2 becomes function
3277 * #1, and this will confuse the PCI core.
3279 #ifdef CONFIG_MMC_RICOH_MMC
3280 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
3287 * Disable via CardBus interface
3289 * This must be done via function #0
3291 if (PCI_FUNC(dev->devfn))
3294 pci_read_config_byte(dev, 0xB7, &disable);
3298 pci_read_config_byte(dev, 0x8E, &write_enable);
3299 pci_write_config_byte(dev, 0x8E, 0xAA);
3300 pci_read_config_byte(dev, 0x8D, &write_target);
3301 pci_write_config_byte(dev, 0x8D, 0xB7);
3302 pci_write_config_byte(dev, 0xB7, disable | 0x02);
3303 pci_write_config_byte(dev, 0x8E, write_enable);
3304 pci_write_config_byte(dev, 0x8D, write_target);
3306 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n");
3307 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3309 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3310 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3312 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
3318 * Disable via FireWire interface
3320 * This must be done via function #0
3322 if (PCI_FUNC(dev->devfn))
3325 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
3326 * certain types of SD/MMC cards. Lowering the SD base clock
3327 * frequency from 200Mhz to 50Mhz fixes this issue.
3329 * 0x150 - SD2.0 mode enable for changing base clock
3330 * frequency to 50Mhz
3331 * 0xe1 - Base clock frequency
3332 * 0x32 - 50Mhz new clock frequency
3333 * 0xf9 - Key register for 0x150
3334 * 0xfc - key register for 0xe1
3336 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
3337 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
3338 pci_write_config_byte(dev, 0xf9, 0xfc);
3339 pci_write_config_byte(dev, 0x150, 0x10);
3340 pci_write_config_byte(dev, 0xf9, 0x00);
3341 pci_write_config_byte(dev, 0xfc, 0x01);
3342 pci_write_config_byte(dev, 0xe1, 0x32);
3343 pci_write_config_byte(dev, 0xfc, 0x00);
3345 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n");
3348 pci_read_config_byte(dev, 0xCB, &disable);
3353 pci_read_config_byte(dev, 0xCA, &write_enable);
3354 pci_write_config_byte(dev, 0xCA, 0x57);
3355 pci_write_config_byte(dev, 0xCB, disable | 0x02);
3356 pci_write_config_byte(dev, 0xCA, write_enable);
3358 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n");
3359 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3362 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3363 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3364 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3365 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3366 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3367 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3368 #endif /*CONFIG_MMC_RICOH_MMC*/
3370 #ifdef CONFIG_DMAR_TABLE
3371 #define VTUNCERRMSK_REG 0x1ac
3372 #define VTD_MSK_SPEC_ERRORS (1 << 31)
3374 * This is a quirk for masking VT-d spec-defined errors to platform error
3375 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets
3376 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3377 * on the RAS config settings of the platform) when a VT-d fault happens.
3378 * The resulting SMI caused the system to hang.
3380 * VT-d spec-related errors are already handled by the VT-d OS code, so no
3381 * need to report the same error through other channels.
3383 static void vtd_mask_spec_errors(struct pci_dev *dev)
3387 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3388 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3390 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3391 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3394 static void fixup_ti816x_class(struct pci_dev *dev)
3396 u32 class = dev->class;
3398 /* TI 816x devices do not have class code set when in PCIe boot mode */
3399 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3400 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n",
3403 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3404 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3407 * Some PCIe devices do not work reliably with the claimed maximum
3408 * payload size supported.
3410 static void fixup_mpss_256(struct pci_dev *dev)
3412 dev->pcie_mpss = 1; /* 256 bytes */
3414 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3415 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3416 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3417 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3418 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3419 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3420 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256);
3423 * Intel 5000 and 5100 Memory controllers have an erratum with read completion
3424 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3425 * Since there is no way of knowing what the PCIe MPS on each fabric will be
3426 * until all of the devices are discovered and buses walked, read completion
3427 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3428 * it is possible to hotplug a device with MPS of 256B.
3430 static void quirk_intel_mc_errata(struct pci_dev *dev)
3435 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3436 pcie_bus_config == PCIE_BUS_DEFAULT)
3440 * Intel erratum specifies bits to change but does not say what
3441 * they are. Keeping them magical until such time as the registers
3442 * and values can be explained.
3444 err = pci_read_config_word(dev, 0x48, &rcc);
3446 pci_err(dev, "Error attempting to read the read completion coalescing register\n");
3450 if (!(rcc & (1 << 10)))
3455 err = pci_write_config_word(dev, 0x48, rcc);
3457 pci_err(dev, "Error attempting to write the read completion coalescing register\n");
3461 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n");
3463 /* Intel 5000 series memory controllers and ports 2-7 */
3464 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3468 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3469 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3470 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3471 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3472 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3473 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3474 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3475 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3476 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3477 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3478 /* Intel 5100 series memory controllers and ports 2-7 */
3479 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3480 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3481 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3482 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3483 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3484 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3485 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3486 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3487 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3488 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3489 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3492 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.
3493 * To work around this, query the size it should be configured to by the
3494 * device and modify the resource end to correspond to this new size.
3496 static void quirk_intel_ntb(struct pci_dev *dev)
3501 rc = pci_read_config_byte(dev, 0x00D0, &val);
3505 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3507 rc = pci_read_config_byte(dev, 0x00D1, &val);
3511 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3517 * Some BIOS implementations leave the Intel GPU interrupts enabled, even
3518 * though no one is handling them (e.g., if the i915 driver is never
3519 * loaded). Additionally the interrupt destination is not set up properly
3520 * and the interrupt ends up -somewhere-.
3522 * These spurious interrupts are "sticky" and the kernel disables the
3523 * (shared) interrupt line after 100,000+ generated interrupts.
3525 * Fix it by disabling the still enabled interrupts. This resolves crashes
3526 * often seen on monitor unplug.
3528 #define I915_DEIER_REG 0x4400c
3529 static void disable_igfx_irq(struct pci_dev *dev)
3531 void __iomem *regs = pci_iomap(dev, 0, 0);
3533 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n");
3537 /* Check if any interrupt line is still enabled */
3538 if (readl(regs + I915_DEIER_REG) != 0) {
3539 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3541 writel(0, regs + I915_DEIER_REG);
3544 pci_iounmap(dev, regs);
3546 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3549 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3550 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3551 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3552 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3555 * PCI devices which are on Intel chips can skip the 10ms delay
3556 * before entering D3 mode.
3558 static void quirk_remove_d3hot_delay(struct pci_dev *dev)
3560 dev->d3hot_delay = 0;
3562 /* C600 Series devices do not need 10ms d3hot_delay */
3563 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay);
3564 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay);
3565 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay);
3566 /* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */
3567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay);
3568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay);
3569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay);
3570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay);
3571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay);
3572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay);
3573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay);
3574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay);
3575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay);
3576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay);
3577 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay);
3578 /* Intel Cherrytrail devices do not need 10ms d3hot_delay */
3579 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay);
3580 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay);
3581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay);
3582 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay);
3583 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay);
3584 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay);
3585 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay);
3586 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay);
3587 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay);
3590 * Some devices may pass our check in pci_intx_mask_supported() if
3591 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3592 * support this feature.
3594 static void quirk_broken_intx_masking(struct pci_dev *dev)
3596 dev->broken_intx_masking = 1;
3598 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3599 quirk_broken_intx_masking);
3600 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3601 quirk_broken_intx_masking);
3602 DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */
3603 quirk_broken_intx_masking);
3606 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3607 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3609 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3611 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3612 quirk_broken_intx_masking);
3615 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3616 * DisINTx can be set but the interrupt status bit is non-functional.
3618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking);
3619 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking);
3620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking);
3621 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking);
3622 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking);
3623 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking);
3624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking);
3625 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking);
3626 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking);
3627 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking);
3628 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking);
3629 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking);
3630 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking);
3631 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking);
3632 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking);
3633 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking);
3635 static u16 mellanox_broken_intx_devs[] = {
3636 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3637 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3638 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3639 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3640 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3641 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3642 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3643 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3644 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3645 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3646 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3647 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3648 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3649 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3652 #define CONNECTX_4_CURR_MAX_MINOR 99
3653 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3656 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3657 * If so, don't mark it as broken.
3658 * FW minor > 99 means older FW version format and no INTx masking support.
3659 * FW minor < 14 means new FW version format and no INTx masking support.
3661 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3663 __be32 __iomem *fw_ver;
3671 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3672 if (pdev->device == mellanox_broken_intx_devs[i]) {
3673 pdev->broken_intx_masking = 1;
3679 * Getting here means Connect-IB cards and up. Connect-IB has no INTx
3680 * support so shouldn't be checked further
3682 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3685 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3686 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3689 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3690 if (pci_enable_device_mem(pdev)) {
3691 pci_warn(pdev, "Can't enable device memory\n");
3695 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3697 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n");
3701 /* Reading from resource space should be 32b aligned */
3702 fw_maj_min = ioread32be(fw_ver);
3703 fw_sub_min = ioread32be(fw_ver + 1);
3704 fw_major = fw_maj_min & 0xffff;
3705 fw_minor = fw_maj_min >> 16;
3706 fw_subminor = fw_sub_min & 0xffff;
3707 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3708 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3709 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",
3710 fw_major, fw_minor, fw_subminor, pdev->device ==
3711 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3712 pdev->broken_intx_masking = 1;
3718 pci_disable_device(pdev);
3720 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3721 mellanox_check_broken_intx_masking);
3723 static void quirk_no_bus_reset(struct pci_dev *dev)
3725 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3729 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
3730 * prevented for those affected devices.
3732 static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
3734 if ((dev->device & 0xffc0) == 0x2340)
3735 quirk_no_bus_reset(dev);
3737 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
3738 quirk_nvidia_no_bus_reset);
3741 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3742 * The device will throw a Link Down error on AER-capable systems and
3743 * regardless of AER, config space of the device is never accessible again
3744 * and typically causes the system to hang or reset when access is attempted.
3745 * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/
3747 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3748 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3749 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3750 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3751 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3752 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset);
3755 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3756 * reset when used with certain child devices. After the reset, config
3757 * accesses to the child may fail.
3759 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
3762 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
3763 * automatically disables LTSSM when Secondary Bus Reset is received and
3764 * the device stops working. Prevent bus reset for these devices. With
3765 * this change, the device can be assigned to VMs with VFIO, but it will
3766 * leak state between VMs. Reference
3767 * https://e2e.ti.com/support/processors/f/791/t/954382
3769 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
3771 static void quirk_no_pm_reset(struct pci_dev *dev)
3774 * We can't do a bus reset on root bus devices, but an ineffective
3775 * PM reset may be better than nothing.
3777 if (!pci_is_root_bus(dev->bus))
3778 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3782 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3783 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3784 * to have no effect on the device: it retains the framebuffer contents and
3785 * monitor sync. Advertising this support makes other layers, like VFIO,
3786 * assume pci_reset_function() is viable for this device. Mark it as
3787 * unavailable to skip it when testing reset methods.
3789 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3790 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3793 * Spectrum-{1,2,3,4} devices report that a D3hot->D0 transition causes a reset
3794 * (i.e., they advertise NoSoftRst-). However, this transition does not have
3795 * any effect on the device: It continues to be operational and network ports
3796 * remain up. Advertising this support makes it seem as if a PM reset is viable
3797 * for these devices. Mark it as unavailable to skip it when testing reset
3800 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcb84, quirk_no_pm_reset);
3801 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf6c, quirk_no_pm_reset);
3802 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf70, quirk_no_pm_reset);
3803 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf80, quirk_no_pm_reset);
3806 * Thunderbolt controllers with broken MSI hotplug signaling:
3807 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3808 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3810 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3812 if (pdev->is_hotplug_bridge &&
3813 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3814 pdev->revision <= 1))
3817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3818 quirk_thunderbolt_hotplug_msi);
3819 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3820 quirk_thunderbolt_hotplug_msi);
3821 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3822 quirk_thunderbolt_hotplug_msi);
3823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3824 quirk_thunderbolt_hotplug_msi);
3825 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3826 quirk_thunderbolt_hotplug_msi);
3830 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3832 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3833 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3834 * be present after resume if a device was plugged in before suspend.
3836 * The Thunderbolt controller consists of a PCIe switch with downstream
3837 * bridges leading to the NHI and to the tunnel PCI bridges.
3839 * This quirk cuts power to the whole chip. Therefore we have to apply it
3840 * during suspend_noirq of the upstream bridge.
3842 * Power is automagically restored before resume. No action is needed.
3844 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3846 acpi_handle bridge, SXIO, SXFP, SXLV;
3848 if (!x86_apple_machine)
3850 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3854 * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller.
3855 * We don't know how to turn it back on again, but firmware does,
3856 * so we can only use SXIO/SXFP/SXLF if we're suspending via
3859 if (!pm_suspend_via_firmware())
3862 bridge = ACPI_HANDLE(&dev->dev);
3867 * SXIO and SXLV are present only on machines requiring this quirk.
3868 * Thunderbolt bridges in external devices might have the same
3869 * device ID as those on the host, but they will not have the
3870 * associated ACPI methods. This implicitly checks that we are at
3873 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3874 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3875 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3877 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n");
3879 /* magic sequence */
3880 acpi_execute_simple_method(SXIO, NULL, 1);
3881 acpi_execute_simple_method(SXFP, NULL, 0);
3883 acpi_execute_simple_method(SXLV, NULL, 0);
3884 acpi_execute_simple_method(SXIO, NULL, 0);
3885 acpi_execute_simple_method(SXLV, NULL, 0);
3887 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3888 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3889 quirk_apple_poweroff_thunderbolt);
3893 * Following are device-specific reset methods which can be used to
3894 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3897 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, bool probe)
3900 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3902 * The 82599 supports FLR on VFs, but FLR support is reported only
3903 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3904 * Thus we must call pcie_flr() directly without first checking if it is
3912 #define SOUTH_CHICKEN2 0xc2004
3913 #define PCH_PP_STATUS 0xc7200
3914 #define PCH_PP_CONTROL 0xc7204
3915 #define MSG_CTL 0x45010
3916 #define NSDE_PWR_STATE 0xd0100
3917 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3919 static int reset_ivb_igd(struct pci_dev *dev, bool probe)
3921 void __iomem *mmio_base;
3922 unsigned long timeout;
3928 mmio_base = pci_iomap(dev, 0, 0);
3932 iowrite32(0x00000002, mmio_base + MSG_CTL);
3935 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3936 * driver loaded sets the right bits. However, this's a reset and
3937 * the bits have been set by i915 previously, so we clobber
3938 * SOUTH_CHICKEN2 register directly here.
3940 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3942 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3943 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3945 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3947 val = ioread32(mmio_base + PCH_PP_STATUS);
3948 if ((val & 0xb0000000) == 0)
3949 goto reset_complete;
3951 } while (time_before(jiffies, timeout));
3952 pci_warn(dev, "timeout during reset\n");
3955 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3957 pci_iounmap(dev, mmio_base);
3961 /* Device-specific reset method for Chelsio T4-based adapters */
3962 static int reset_chelsio_generic_dev(struct pci_dev *dev, bool probe)
3968 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3969 * that we have no device-specific reset method.
3971 if ((dev->device & 0xf000) != 0x4000)
3975 * If this is the "probe" phase, return 0 indicating that we can
3976 * reset this device.
3982 * T4 can wedge if there are DMAs in flight within the chip and Bus
3983 * Master has been disabled. We need to have it on till the Function
3984 * Level Reset completes. (BUS_MASTER is disabled in
3985 * pci_reset_function()).
3987 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3988 pci_write_config_word(dev, PCI_COMMAND,
3989 old_command | PCI_COMMAND_MASTER);
3992 * Perform the actual device function reset, saving and restoring
3993 * configuration information around the reset.
3995 pci_save_state(dev);
3998 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3999 * are disabled when an MSI-X interrupt message needs to be delivered.
4000 * So we briefly re-enable MSI-X interrupts for the duration of the
4001 * FLR. The pci_restore_state() below will restore the original
4004 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
4005 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
4006 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
4008 PCI_MSIX_FLAGS_ENABLE |
4009 PCI_MSIX_FLAGS_MASKALL);
4014 * Restore the configuration information (BAR values, etc.) including
4015 * the original PCI Configuration Space Command word, and return
4018 pci_restore_state(dev);
4019 pci_write_config_word(dev, PCI_COMMAND, old_command);
4023 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
4024 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
4025 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
4028 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after
4029 * FLR where config space reads from the device return -1. We seem to be
4030 * able to avoid this condition if we disable the NVMe controller prior to
4031 * FLR. This quirk is generic for any NVMe class device requiring similar
4032 * assistance to quiesce the device prior to FLR.
4034 * NVMe specification: https://nvmexpress.org/resources/specifications/
4036 * Chapter 2: Required and optional PCI config registers
4037 * Chapter 3: NVMe control registers
4038 * Chapter 7.3: Reset behavior
4040 static int nvme_disable_and_flr(struct pci_dev *dev, bool probe)
4046 if (dev->class != PCI_CLASS_STORAGE_EXPRESS ||
4047 pcie_reset_flr(dev, PCI_RESET_PROBE) || !pci_resource_start(dev, 0))
4053 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg));
4057 pci_read_config_word(dev, PCI_COMMAND, &cmd);
4058 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY);
4060 cfg = readl(bar + NVME_REG_CC);
4062 /* Disable controller if enabled */
4063 if (cfg & NVME_CC_ENABLE) {
4064 u32 cap = readl(bar + NVME_REG_CAP);
4065 unsigned long timeout;
4068 * Per nvme_disable_ctrl() skip shutdown notification as it
4069 * could complete commands to the admin queue. We only intend
4070 * to quiesce the device before reset.
4072 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE);
4074 writel(cfg, bar + NVME_REG_CC);
4077 * Some controllers require an additional delay here, see
4078 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet
4079 * supported by this quirk.
4082 /* Cap register provides max timeout in 500ms increments */
4083 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
4086 u32 status = readl(bar + NVME_REG_CSTS);
4088 /* Ready status becomes zero on disable complete */
4089 if (!(status & NVME_CSTS_RDY))
4094 if (time_after(jiffies, timeout)) {
4095 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n");
4101 pci_iounmap(dev, bar);
4109 * Some NVMe controllers such as Intel DC P3700 and Solidigm P44 Pro will
4110 * timeout waiting for ready status to change after NVMe enable if the driver
4111 * starts interacting with the device too soon after FLR. A 250ms delay after
4112 * FLR has heuristically proven to produce reliably working results for device
4115 static int delay_250ms_after_flr(struct pci_dev *dev, bool probe)
4118 return pcie_reset_flr(dev, PCI_RESET_PROBE);
4120 pcie_reset_flr(dev, PCI_RESET_DO_RESET);
4127 #define PCI_DEVICE_ID_HINIC_VF 0x375E
4128 #define HINIC_VF_FLR_TYPE 0x1000
4129 #define HINIC_VF_FLR_CAP_BIT (1UL << 30)
4130 #define HINIC_VF_OP 0xE80
4131 #define HINIC_VF_FLR_PROC_BIT (1UL << 18)
4132 #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */
4134 /* Device-specific reset method for Huawei Intelligent NIC virtual functions */
4135 static int reset_hinic_vf_dev(struct pci_dev *pdev, bool probe)
4137 unsigned long timeout;
4144 bar = pci_iomap(pdev, 0, 0);
4148 /* Get and check firmware capabilities */
4149 val = ioread32be(bar + HINIC_VF_FLR_TYPE);
4150 if (!(val & HINIC_VF_FLR_CAP_BIT)) {
4151 pci_iounmap(pdev, bar);
4155 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */
4156 val = ioread32be(bar + HINIC_VF_OP);
4157 val = val | HINIC_VF_FLR_PROC_BIT;
4158 iowrite32be(val, bar + HINIC_VF_OP);
4163 * The device must recapture its Bus and Device Numbers after FLR
4164 * in order generate Completions. Issue a config write to let the
4165 * device capture this information.
4167 pci_write_config_word(pdev, PCI_VENDOR_ID, 0);
4169 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */
4170 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT);
4172 val = ioread32be(bar + HINIC_VF_OP);
4173 if (!(val & HINIC_VF_FLR_PROC_BIT))
4174 goto reset_complete;
4176 } while (time_before(jiffies, timeout));
4178 val = ioread32be(bar + HINIC_VF_OP);
4179 if (!(val & HINIC_VF_FLR_PROC_BIT))
4180 goto reset_complete;
4182 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val);
4185 pci_iounmap(pdev, bar);
4190 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
4191 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
4192 reset_intel_82599_sfp_virtfn },
4193 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
4195 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
4197 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr },
4198 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr },
4199 { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr },
4200 { PCI_VENDOR_ID_SOLIDIGM, 0xf1ac, delay_250ms_after_flr },
4201 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4202 reset_chelsio_generic_dev },
4203 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF,
4204 reset_hinic_vf_dev },
4209 * These device-specific reset methods are here rather than in a driver
4210 * because when a host assigns a device to a guest VM, the host may need
4211 * to reset the device but probably doesn't have a driver for it.
4213 int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
4215 const struct pci_dev_reset_methods *i;
4217 for (i = pci_dev_reset_methods; i->reset; i++) {
4218 if ((i->vendor == dev->vendor ||
4219 i->vendor == (u16)PCI_ANY_ID) &&
4220 (i->device == dev->device ||
4221 i->device == (u16)PCI_ANY_ID))
4222 return i->reset(dev, probe);
4228 static void quirk_dma_func0_alias(struct pci_dev *dev)
4230 if (PCI_FUNC(dev->devfn) != 0)
4231 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1);
4235 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
4237 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
4239 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
4240 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
4242 static void quirk_dma_func1_alias(struct pci_dev *dev)
4244 if (PCI_FUNC(dev->devfn) != 1)
4245 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1);
4249 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
4250 * SKUs function 1 is present and is a legacy IDE controller, in other
4251 * SKUs this function is not present, making this a ghost requester.
4252 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
4254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
4255 quirk_dma_func1_alias);
4256 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
4257 quirk_dma_func1_alias);
4258 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
4259 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
4260 quirk_dma_func1_alias);
4261 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
4262 quirk_dma_func1_alias);
4263 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
4264 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
4265 quirk_dma_func1_alias);
4266 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
4267 quirk_dma_func1_alias);
4268 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
4269 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
4270 quirk_dma_func1_alias);
4271 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
4272 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
4273 quirk_dma_func1_alias);
4274 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
4275 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
4276 quirk_dma_func1_alias);
4277 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */
4278 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183,
4279 quirk_dma_func1_alias);
4280 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
4281 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
4282 quirk_dma_func1_alias);
4283 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */
4284 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215,
4285 quirk_dma_func1_alias);
4286 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
4287 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
4288 quirk_dma_func1_alias);
4289 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
4290 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
4291 quirk_dma_func1_alias);
4292 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9235,
4293 quirk_dma_func1_alias);
4294 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
4295 quirk_dma_func1_alias);
4296 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
4297 quirk_dma_func1_alias);
4298 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
4299 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
4300 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
4301 quirk_dma_func1_alias);
4302 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
4303 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4304 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4305 quirk_dma_func1_alias);
4308 * Some devices DMA with the wrong devfn, not just the wrong function.
4309 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4310 * the alias is "fixed" and independent of the device devfn.
4312 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4313 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4314 * single device on the secondary bus. In reality, the single exposed
4315 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4316 * that provides a bridge to the internal bus of the I/O processor. The
4317 * controller supports private devices, which can be hidden from PCI config
4318 * space. In the case of the Adaptec 3405, a private device at 01.0
4319 * appears to be the DMA engine, which therefore needs to become a DMA
4320 * alias for the device.
4322 static const struct pci_device_id fixed_dma_alias_tbl[] = {
4323 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4324 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4325 .driver_data = PCI_DEVFN(1, 0) },
4326 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4327 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4328 .driver_data = PCI_DEVFN(1, 0) },
4332 static void quirk_fixed_dma_alias(struct pci_dev *dev)
4334 const struct pci_device_id *id;
4336 id = pci_match_id(fixed_dma_alias_tbl, dev);
4338 pci_add_dma_alias(dev, id->driver_data, 1);
4340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4343 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4344 * using the wrong DMA alias for the device. Some of these devices can be
4345 * used as either forward or reverse bridges, so we need to test whether the
4346 * device is operating in the correct mode. We could probably apply this
4347 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4348 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4349 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4351 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4353 if (!pci_is_root_bus(pdev->bus) &&
4354 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4355 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4356 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4357 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4359 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4360 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4361 quirk_use_pcie_bridge_dma_alias);
4362 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4363 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4364 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4365 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4366 /* ITE 8893 has the same problem as the 8892 */
4367 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4368 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4369 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4372 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4373 * be added as aliases to the DMA device in order to allow buffer access
4374 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4375 * programmed in the EEPROM.
4377 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4379 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1);
4380 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1);
4381 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1);
4383 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4387 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
4388 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
4390 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
4391 * when IOMMU is enabled. These aliases allow computational unit access to
4392 * host memory. These aliases mark the whole VCA device as one IOMMU
4395 * All possible slot numbers (0x20) are used, since we are unable to tell
4396 * what slot is used on other side. This quirk is intended for both host
4397 * and computational unit sides. The VCA devices have up to five functions
4398 * (four for DMA channels and one additional).
4400 static void quirk_pex_vca_alias(struct pci_dev *pdev)
4402 const unsigned int num_pci_slots = 0x20;
4405 for (slot = 0; slot < num_pci_slots; slot++)
4406 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5);
4408 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
4409 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
4410 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
4411 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
4412 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
4413 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
4416 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4417 * associated not at the root bus, but at a bridge below. This quirk avoids
4418 * generating invalid DMA aliases.
4420 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4422 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4424 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4425 quirk_bridge_cavm_thrx2_pcie_root);
4426 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4427 quirk_bridge_cavm_thrx2_pcie_root);
4430 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4431 * class code. Fix it.
4433 static void quirk_tw686x_class(struct pci_dev *pdev)
4435 u32 class = pdev->class;
4437 /* Use "Multimedia controller" class */
4438 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4439 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4440 class, pdev->class);
4442 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4443 quirk_tw686x_class);
4444 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4445 quirk_tw686x_class);
4446 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4447 quirk_tw686x_class);
4448 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4449 quirk_tw686x_class);
4452 * Some devices have problems with Transaction Layer Packets with the Relaxed
4453 * Ordering Attribute set. Such devices should mark themselves and other
4454 * device drivers should check before sending TLPs with RO set.
4456 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4458 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4459 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4463 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4464 * Complex have a Flow Control Credit issue which can cause performance
4465 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4467 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4468 quirk_relaxedordering_disable);
4469 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4470 quirk_relaxedordering_disable);
4471 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4472 quirk_relaxedordering_disable);
4473 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4474 quirk_relaxedordering_disable);
4475 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4476 quirk_relaxedordering_disable);
4477 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4478 quirk_relaxedordering_disable);
4479 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4480 quirk_relaxedordering_disable);
4481 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4482 quirk_relaxedordering_disable);
4483 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4484 quirk_relaxedordering_disable);
4485 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4486 quirk_relaxedordering_disable);
4487 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4488 quirk_relaxedordering_disable);
4489 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4490 quirk_relaxedordering_disable);
4491 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4492 quirk_relaxedordering_disable);
4493 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4494 quirk_relaxedordering_disable);
4495 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4496 quirk_relaxedordering_disable);
4497 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4498 quirk_relaxedordering_disable);
4499 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4500 quirk_relaxedordering_disable);
4501 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4502 quirk_relaxedordering_disable);
4503 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4504 quirk_relaxedordering_disable);
4505 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4506 quirk_relaxedordering_disable);
4507 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4508 quirk_relaxedordering_disable);
4509 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4510 quirk_relaxedordering_disable);
4511 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4512 quirk_relaxedordering_disable);
4513 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4514 quirk_relaxedordering_disable);
4515 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4516 quirk_relaxedordering_disable);
4517 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4518 quirk_relaxedordering_disable);
4519 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4520 quirk_relaxedordering_disable);
4521 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4522 quirk_relaxedordering_disable);
4525 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex
4526 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4527 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4528 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4529 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4530 * November 10, 2010). As a result, on this platform we can't use Relaxed
4531 * Ordering for Upstream TLPs.
4533 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4534 quirk_relaxedordering_disable);
4535 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4536 quirk_relaxedordering_disable);
4537 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4538 quirk_relaxedordering_disable);
4541 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4542 * values for the Attribute as were supplied in the header of the
4543 * corresponding Request, except as explicitly allowed when IDO is used."
4545 * If a non-compliant device generates a completion with a different
4546 * attribute than the request, the receiver may accept it (which itself
4547 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4548 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4549 * device access timeout.
4551 * If the non-compliant device generates completions with zero attributes
4552 * (instead of copying the attributes from the request), we can work around
4553 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4554 * upstream devices so they always generate requests with zero attributes.
4556 * This affects other devices under the same Root Port, but since these
4557 * attributes are performance hints, there should be no functional problem.
4559 * Note that Configuration Space accesses are never supposed to have TLP
4560 * Attributes, so we're safe waiting till after any Configuration Space
4561 * accesses to do the Root Port fixup.
4563 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4565 struct pci_dev *root_port = pcie_find_root_port(pdev);
4568 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n");
4572 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4573 dev_name(&pdev->dev));
4574 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4575 PCI_EXP_DEVCTL_RELAX_EN |
4576 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4580 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4581 * Completion it generates.
4583 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4586 * This mask/compare operation selects for Physical Function 4 on a
4587 * T5. We only need to fix up the Root Port once for any of the
4588 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4589 * 0x54xx so we use that one.
4591 if ((pdev->device & 0xff00) == 0x5400)
4592 quirk_disable_root_port_attributes(pdev);
4594 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4595 quirk_chelsio_T5_disable_root_port_attributes);
4598 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided
4600 * @acs_ctrl_req: Bitmask of desired ACS controls
4601 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by
4602 * the hardware design
4604 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included
4605 * in @acs_ctrl_ena, i.e., the device provides all the access controls the
4606 * caller desires. Return 0 otherwise.
4608 static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena)
4610 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req)
4616 * AMD has indicated that the devices below do not support peer-to-peer
4617 * in any system where they are found in the southbridge with an AMD
4618 * IOMMU in the system. Multifunction devices that do not support
4619 * peer-to-peer between functions can claim to support a subset of ACS.
4620 * Such devices effectively enable request redirect (RR) and completion
4621 * redirect (CR) since all transactions are redirected to the upstream
4624 * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/
4625 * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/
4626 * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/
4628 * 1002:4385 SBx00 SMBus Controller
4629 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4630 * 1002:4383 SBx00 Azalia (Intel HDA)
4631 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4632 * 1002:4384 SBx00 PCI to PCI Bridge
4633 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4635 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4637 * 1022:780f [AMD] FCH PCI Bridge
4638 * 1022:7809 [AMD] FCH USB OHCI Controller
4640 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4643 struct acpi_table_header *header = NULL;
4646 /* Targeting multifunction devices on the SB (appears on root bus) */
4647 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4650 /* The IVRS table describes the AMD IOMMU */
4651 status = acpi_get_table("IVRS", 0, &header);
4652 if (ACPI_FAILURE(status))
4655 acpi_put_table(header);
4657 /* Filter out flags not applicable to multifunction */
4658 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4660 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR);
4666 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4668 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4671 switch (dev->device) {
4673 * Effectively selects all downstream ports for whole ThunderX1
4674 * (which represents 8 SoCs).
4676 case 0xa000 ... 0xa7ff: /* ThunderX1 */
4677 case 0xaf84: /* ThunderX2 */
4678 case 0xb884: /* ThunderX3 */
4685 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4687 if (!pci_quirk_cavium_acs_match(dev))
4691 * Cavium Root Ports don't advertise an ACS capability. However,
4692 * the RTL internally implements similar protection as if ACS had
4693 * Source Validation, Request Redirection, Completion Redirection,
4694 * and Upstream Forwarding features enabled. Assert that the
4695 * hardware implements and enables equivalent ACS functionality for
4698 return pci_acs_ctrl_enabled(acs_flags,
4699 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4702 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4705 * X-Gene Root Ports matching this quirk do not allow peer-to-peer
4706 * transactions with others, allowing masking out these bits as if they
4707 * were unimplemented in the ACS capability.
4709 return pci_acs_ctrl_enabled(acs_flags,
4710 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4714 * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability.
4715 * But the implementation could block peer-to-peer transactions between them
4716 * and provide ACS-like functionality.
4718 static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags)
4720 if (!pci_is_pcie(dev) ||
4721 ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) &&
4722 (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)))
4726 * Future Zhaoxin Root Ports and Switch Downstream Ports will
4727 * implement ACS capability in accordance with the PCIe Spec.
4729 switch (dev->device) {
4730 case 0x0710 ... 0x071e:
4732 case 0x0723 ... 0x0752:
4733 return pci_acs_ctrl_enabled(acs_flags,
4734 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4741 * Many Intel PCH Root Ports do provide ACS-like features to disable peer
4742 * transactions and validate bus numbers in requests, but do not provide an
4743 * actual PCIe ACS capability. This is the list of device IDs known to fall
4744 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4746 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4748 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4749 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4750 /* Cougarpoint PCH */
4751 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4752 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4753 /* Pantherpoint PCH */
4754 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4755 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4756 /* Lynxpoint-H PCH */
4757 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4758 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4759 /* Lynxpoint-LP PCH */
4760 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4761 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4763 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4764 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4765 /* Patsburg (X79) PCH */
4766 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4767 /* Wellsburg (X99) PCH */
4768 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4769 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4770 /* Lynx Point (9 series) PCH */
4771 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4774 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4778 /* Filter out a few obvious non-matches first */
4779 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4782 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4783 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4789 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4791 if (!pci_quirk_intel_pch_acs_match(dev))
4794 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK)
4795 return pci_acs_ctrl_enabled(acs_flags,
4796 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4798 return pci_acs_ctrl_enabled(acs_flags, 0);
4802 * These QCOM Root Ports do provide ACS-like features to disable peer
4803 * transactions and validate bus numbers in requests, but do not provide an
4804 * actual PCIe ACS capability. Hardware supports source validation but it
4805 * will report the issue as Completer Abort instead of ACS Violation.
4806 * Hardware doesn't support peer-to-peer and each Root Port is a Root
4807 * Complex with unique segment numbers. It is not possible for one Root
4808 * Port to pass traffic to another Root Port. All PCIe transactions are
4809 * terminated inside the Root Port.
4811 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4813 return pci_acs_ctrl_enabled(acs_flags,
4814 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4818 * Each of these NXP Root Ports is in a Root Complex with a unique segment
4819 * number and does provide isolation features to disable peer transactions
4820 * and validate bus numbers in requests, but does not provide an ACS
4823 static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags)
4825 return pci_acs_ctrl_enabled(acs_flags,
4826 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4829 static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags)
4831 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4835 * Amazon's Annapurna Labs root ports don't include an ACS capability,
4836 * but do include ACS-like functionality. The hardware doesn't support
4837 * peer-to-peer transactions via the root port and each has a unique
4840 * Additionally, the root ports cannot send traffic to each other.
4842 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4844 return acs_flags ? 0 : 1;
4848 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4849 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4850 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4851 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4852 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4853 * control register is at offset 8 instead of 6 and we should probably use
4854 * dword accesses to them. This applies to the following PCI Device IDs, as
4855 * found in volume 1 of the datasheet[2]:
4857 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4858 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4860 * N.B. This doesn't fix what lspci shows.
4862 * The 100 series chipset specification update includes this as errata #23[3].
4864 * The 200 series chipset (Union Point) has the same bug according to the
4865 * specification update (Intel 200 Series Chipset Family Platform Controller
4866 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4867 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4870 * 0xa290-0xa29f PCI Express Root port #{0-16}
4871 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4873 * Mobile chipsets are also affected, 7th & 8th Generation
4874 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4875 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4876 * Processor Family I/O for U Quad Core Platforms Specification Update,
4877 * August 2017, Revision 002, Document#: 334660-002)[6]
4878 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4879 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4880 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4882 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4884 * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4885 * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4886 * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4887 * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4888 * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4889 * [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
4890 * [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
4892 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4894 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4897 switch (dev->device) {
4898 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4899 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4900 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4907 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4909 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4914 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4921 /* see pci_acs_flags_enabled() */
4922 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4923 acs_flags &= (cap | PCI_ACS_EC);
4925 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4927 return pci_acs_ctrl_enabled(acs_flags, ctrl);
4930 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4933 * SV, TB, and UF are not relevant to multifunction endpoints.
4935 * Multifunction devices are only required to implement RR, CR, and DT
4936 * in their ACS capability if they support peer-to-peer transactions.
4937 * Devices matching this quirk have been verified by the vendor to not
4938 * perform peer-to-peer with other functions, allowing us to mask out
4939 * these bits as if they were unimplemented in the ACS capability.
4941 return pci_acs_ctrl_enabled(acs_flags,
4942 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4943 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4946 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags)
4949 * Intel RCiEP's are required to allow p2p only on translated
4950 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16,
4951 * "Root-Complex Peer to Peer Considerations".
4953 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END)
4956 return pci_acs_ctrl_enabled(acs_flags,
4957 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4960 static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4963 * iProc PAXB Root Ports don't advertise an ACS capability, but
4964 * they do not allow peer-to-peer transactions between Root Ports.
4965 * Allow each Root Port to be in a separate IOMMU group by masking
4968 return pci_acs_ctrl_enabled(acs_flags,
4969 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4973 * Wangxun 10G/1G NICs have no ACS capability, and on multi-function
4974 * devices, peer-to-peer transactions are not be used between the functions.
4975 * So add an ACS quirk for below devices to isolate functions.
4976 * SFxxx 1G NICs(em).
4977 * RP1000/RP2000 10G NICs(sp).
4979 static int pci_quirk_wangxun_nic_acs(struct pci_dev *dev, u16 acs_flags)
4981 switch (dev->device) {
4982 case 0x0100 ... 0x010F:
4985 return pci_acs_ctrl_enabled(acs_flags,
4986 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4992 static const struct pci_dev_acs_enabled {
4995 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4996 } pci_dev_acs_enabled[] = {
4997 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4998 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4999 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
5000 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
5001 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
5002 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
5003 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
5004 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
5005 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
5006 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
5007 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
5008 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
5009 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
5010 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
5011 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
5012 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
5013 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
5014 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
5015 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
5016 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
5017 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
5018 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
5019 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
5020 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
5021 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
5022 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
5023 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
5024 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
5025 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
5026 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
5027 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
5029 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
5030 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
5031 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
5032 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
5033 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
5034 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
5035 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
5037 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
5038 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
5039 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
5040 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
5041 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
5042 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
5043 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
5044 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
5046 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
5047 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
5048 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
5050 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
5051 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
5052 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
5053 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
5054 /* 82571 (Quads omitted due to non-ACS switch) */
5055 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
5056 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
5057 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
5058 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
5060 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
5061 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
5062 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs },
5063 /* QCOM QDF2xxx root ports */
5064 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
5065 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
5066 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
5067 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
5068 /* Intel PCH root ports */
5069 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
5070 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
5071 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
5072 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
5073 /* Cavium ThunderX */
5074 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
5075 /* Cavium multi-function devices */
5076 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },
5077 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },
5078 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },
5080 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
5081 /* Ampere Computing */
5082 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
5083 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
5084 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
5085 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
5086 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
5087 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
5088 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
5089 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
5090 /* Broadcom multi-function device */
5091 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
5092 { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs },
5093 { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs },
5094 { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs },
5095 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
5096 /* Amazon Annapurna Labs */
5097 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
5098 /* Zhaoxin multi-function devices */
5099 { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
5100 { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
5101 { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
5102 /* NXP root ports, xx=16, 12, or 08 cores */
5103 /* LX2xx0A : without security features + CAN-FD */
5104 { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs },
5105 { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs },
5106 { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs },
5107 /* LX2xx0C : security features + CAN-FD */
5108 { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs },
5109 { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs },
5110 { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs },
5111 /* LX2xx0E : security features + CAN */
5112 { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs },
5113 { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs },
5114 { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs },
5115 /* LX2xx0N : without security features + CAN */
5116 { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs },
5117 { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs },
5118 { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs },
5119 /* LX2xx2A : without security features + CAN-FD */
5120 { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs },
5121 { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs },
5122 { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs },
5123 /* LX2xx2C : security features + CAN-FD */
5124 { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs },
5125 { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs },
5126 { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs },
5127 /* LX2xx2E : security features + CAN */
5128 { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs },
5129 { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs },
5130 { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs },
5131 /* LX2xx2N : without security features + CAN */
5132 { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs },
5133 { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs },
5134 { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs },
5135 /* Zhaoxin Root/Downstream Ports */
5136 { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
5138 { PCI_VENDOR_ID_WANGXUN, PCI_ANY_ID, pci_quirk_wangxun_nic_acs },
5143 * pci_dev_specific_acs_enabled - check whether device provides ACS controls
5145 * @acs_flags: Bitmask of desired ACS controls
5148 * -ENOTTY: No quirk applies to this device; we can't tell whether the
5149 * device provides the desired controls
5150 * 0: Device does not provide all the desired controls
5151 * >0: Device provides all the controls in @acs_flags
5153 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
5155 const struct pci_dev_acs_enabled *i;
5159 * Allow devices that do not expose standard PCIe ACS capabilities
5160 * or control to indicate their support here. Multi-function express
5161 * devices which do not allow internal peer-to-peer between functions,
5162 * but do not implement PCIe ACS may wish to return true here.
5164 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
5165 if ((i->vendor == dev->vendor ||
5166 i->vendor == (u16)PCI_ANY_ID) &&
5167 (i->device == dev->device ||
5168 i->device == (u16)PCI_ANY_ID)) {
5169 ret = i->acs_enabled(dev, acs_flags);
5178 /* Config space offset of Root Complex Base Address register */
5179 #define INTEL_LPC_RCBA_REG 0xf0
5180 /* 31:14 RCBA address */
5181 #define INTEL_LPC_RCBA_MASK 0xffffc000
5183 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
5185 /* Backbone Scratch Pad Register */
5186 #define INTEL_BSPR_REG 0x1104
5187 /* Backbone Peer Non-Posted Disable */
5188 #define INTEL_BSPR_REG_BPNPD (1 << 8)
5189 /* Backbone Peer Posted Disable */
5190 #define INTEL_BSPR_REG_BPPD (1 << 9)
5192 /* Upstream Peer Decode Configuration Register */
5193 #define INTEL_UPDCR_REG 0x1014
5194 /* 5:0 Peer Decode Enable bits */
5195 #define INTEL_UPDCR_REG_MASK 0x3f
5197 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
5199 u32 rcba, bspr, updcr;
5200 void __iomem *rcba_mem;
5203 * Read the RCBA register from the LPC (D31:F0). PCH root ports
5204 * are D28:F* and therefore get probed before LPC, thus we can't
5205 * use pci_get_slot()/pci_read_config_dword() here.
5207 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
5208 INTEL_LPC_RCBA_REG, &rcba);
5209 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
5212 rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK,
5213 PAGE_ALIGN(INTEL_UPDCR_REG));
5218 * The BSPR can disallow peer cycles, but it's set by soft strap and
5219 * therefore read-only. If both posted and non-posted peer cycles are
5220 * disallowed, we're ok. If either are allowed, then we need to use
5221 * the UPDCR to disable peer decodes for each port. This provides the
5222 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5224 bspr = readl(rcba_mem + INTEL_BSPR_REG);
5225 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
5226 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
5227 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
5228 if (updcr & INTEL_UPDCR_REG_MASK) {
5229 pci_info(dev, "Disabling UPDCR peer decodes\n");
5230 updcr &= ~INTEL_UPDCR_REG_MASK;
5231 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
5239 /* Miscellaneous Port Configuration register */
5240 #define INTEL_MPC_REG 0xd8
5241 /* MPC: Invalid Receive Bus Number Check Enable */
5242 #define INTEL_MPC_REG_IRBNCE (1 << 26)
5244 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
5249 * When enabled, the IRBNCE bit of the MPC register enables the
5250 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
5251 * ensures that requester IDs fall within the bus number range
5252 * of the bridge. Enable if not already.
5254 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
5255 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
5256 pci_info(dev, "Enabling MPC IRBNCE\n");
5257 mpc |= INTEL_MPC_REG_IRBNCE;
5258 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
5263 * Currently this quirk does the equivalent of
5264 * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5266 * TODO: This quirk also needs to do equivalent of PCI_ACS_TB,
5267 * if dev->external_facing || dev->untrusted
5269 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
5271 if (!pci_quirk_intel_pch_acs_match(dev))
5274 if (pci_quirk_enable_intel_lpc_acs(dev)) {
5275 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n");
5279 pci_quirk_enable_intel_rp_mpc_acs(dev);
5281 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
5283 pci_info(dev, "Intel PCH root port ACS workaround enabled\n");
5288 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
5293 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5300 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5301 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5303 ctrl |= (cap & PCI_ACS_SV);
5304 ctrl |= (cap & PCI_ACS_RR);
5305 ctrl |= (cap & PCI_ACS_CR);
5306 ctrl |= (cap & PCI_ACS_UF);
5308 if (pci_ats_disabled() || dev->external_facing || dev->untrusted)
5309 ctrl |= (cap & PCI_ACS_TB);
5311 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5313 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n");
5318 static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
5323 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5330 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5331 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5333 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
5335 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5337 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n");
5342 static const struct pci_dev_acs_ops {
5345 int (*enable_acs)(struct pci_dev *dev);
5346 int (*disable_acs_redir)(struct pci_dev *dev);
5347 } pci_dev_acs_ops[] = {
5348 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5349 .enable_acs = pci_quirk_enable_intel_pch_acs,
5351 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5352 .enable_acs = pci_quirk_enable_intel_spt_pch_acs,
5353 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir,
5357 int pci_dev_specific_enable_acs(struct pci_dev *dev)
5359 const struct pci_dev_acs_ops *p;
5362 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5363 p = &pci_dev_acs_ops[i];
5364 if ((p->vendor == dev->vendor ||
5365 p->vendor == (u16)PCI_ANY_ID) &&
5366 (p->device == dev->device ||
5367 p->device == (u16)PCI_ANY_ID) &&
5369 ret = p->enable_acs(dev);
5378 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
5380 const struct pci_dev_acs_ops *p;
5383 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5384 p = &pci_dev_acs_ops[i];
5385 if ((p->vendor == dev->vendor ||
5386 p->vendor == (u16)PCI_ANY_ID) &&
5387 (p->device == dev->device ||
5388 p->device == (u16)PCI_ANY_ID) &&
5389 p->disable_acs_redir) {
5390 ret = p->disable_acs_redir(dev);
5400 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with
5401 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
5402 * Next Capability pointer in the MSI Capability Structure should point to
5403 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
5406 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
5408 int pos, i = 0, ret;
5411 struct pci_cap_saved_state *state;
5413 /* Bail if the hardware bug is fixed */
5414 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
5417 /* Bail if MSI Capability Structure is not found for some reason */
5418 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
5423 * Bail if Next Capability pointer in the MSI Capability Structure
5424 * is not the expected incorrect 0x00.
5426 pci_read_config_byte(pdev, pos + 1, &next_cap);
5431 * PCIe Capability Structure is expected to be at 0x50 and should
5432 * terminate the list (Next Capability pointer is 0x00). Verify
5433 * Capability Id and Next Capability pointer is as expected.
5434 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
5435 * to correctly set kernel data structures which have already been
5436 * set incorrectly due to the hardware bug.
5439 pci_read_config_word(pdev, pos, ®16);
5440 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
5442 #ifndef PCI_EXP_SAVE_REGS
5443 #define PCI_EXP_SAVE_REGS 7
5445 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
5447 pdev->pcie_cap = pos;
5448 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
5449 pdev->pcie_flags_reg = reg16;
5450 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
5451 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
5453 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
5454 ret = pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status);
5455 if ((ret != PCIBIOS_SUCCESSFUL) || (PCI_POSSIBLE_ERROR(status)))
5456 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
5458 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
5462 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
5466 state->cap.cap_nr = PCI_CAP_ID_EXP;
5467 state->cap.cap_extended = 0;
5468 state->cap.size = size;
5469 cap = (u16 *)&state->cap.data[0];
5470 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
5471 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
5472 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
5473 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
5474 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
5475 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
5476 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
5477 hlist_add_head(&state->next, &pdev->saved_cap_space);
5480 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
5483 * FLR may cause the following to devices to hang:
5485 * AMD Starship/Matisse HD Audio Controller 0x1487
5486 * AMD Starship USB 3.0 Host Controller 0x148c
5487 * AMD Matisse USB 3.0 Host Controller 0x149c
5488 * Intel 82579LM Gigabit Ethernet Controller 0x1502
5489 * Intel 82579V Gigabit Ethernet Controller 0x1503
5492 static void quirk_no_flr(struct pci_dev *dev)
5494 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
5496 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr);
5497 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr);
5498 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
5499 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x7901, quirk_no_flr);
5500 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
5501 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
5503 /* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */
5504 static void quirk_no_flr_snet(struct pci_dev *dev)
5506 if (dev->revision == 0x1)
5509 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet);
5511 static void quirk_no_ext_tags(struct pci_dev *pdev)
5513 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
5518 bridge->no_ext_tags = 1;
5519 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n");
5521 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5523 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5524 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5525 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5526 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5527 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5528 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5529 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5531 #ifdef CONFIG_PCI_ATS
5532 static void quirk_no_ats(struct pci_dev *pdev)
5534 pci_info(pdev, "disabling ATS\n");
5539 * Some devices require additional driver setup to enable ATS. Don't use
5540 * ATS for those devices as ATS will be enabled before the driver has had a
5541 * chance to load and configure the device.
5543 static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
5545 if (pdev->device == 0x15d8) {
5546 if (pdev->revision == 0xcf &&
5547 pdev->subsystem_vendor == 0xea50 &&
5548 (pdev->subsystem_device == 0xce19 ||
5549 pdev->subsystem_device == 0xcc10 ||
5550 pdev->subsystem_device == 0xcc08))
5557 /* AMD Stoney platform GPU */
5558 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
5559 /* AMD Iceland dGPU */
5560 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
5561 /* AMD Navi10 dGPU */
5562 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7310, quirk_amd_harvest_no_ats);
5563 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
5564 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7318, quirk_amd_harvest_no_ats);
5565 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7319, quirk_amd_harvest_no_ats);
5566 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731a, quirk_amd_harvest_no_ats);
5567 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731b, quirk_amd_harvest_no_ats);
5568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731e, quirk_amd_harvest_no_ats);
5569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731f, quirk_amd_harvest_no_ats);
5570 /* AMD Navi14 dGPU */
5571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
5572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats);
5573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7347, quirk_amd_harvest_no_ats);
5574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x734f, quirk_amd_harvest_no_ats);
5575 /* AMD Raven platform iGPU */
5576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);
5579 * Intel IPU E2000 revisions before C0 implement incorrect endianness
5580 * in ATS Invalidate Request message body. Disable ATS for those devices.
5582 static void quirk_intel_e2000_no_ats(struct pci_dev *pdev)
5584 if (pdev->revision < 0x20)
5587 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1451, quirk_intel_e2000_no_ats);
5588 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1452, quirk_intel_e2000_no_ats);
5589 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1453, quirk_intel_e2000_no_ats);
5590 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1454, quirk_intel_e2000_no_ats);
5591 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1455, quirk_intel_e2000_no_ats);
5592 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1457, quirk_intel_e2000_no_ats);
5593 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1459, quirk_intel_e2000_no_ats);
5594 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x145a, quirk_intel_e2000_no_ats);
5595 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x145c, quirk_intel_e2000_no_ats);
5596 #endif /* CONFIG_PCI_ATS */
5598 /* Freescale PCIe doesn't support MSI in RC mode */
5599 static void quirk_fsl_no_msi(struct pci_dev *pdev)
5601 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5604 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5607 * Although not allowed by the spec, some multi-function devices have
5608 * dependencies of one function (consumer) on another (supplier). For the
5609 * consumer to work in D0, the supplier must also be in D0. Create a
5610 * device link from the consumer to the supplier to enforce this
5611 * dependency. Runtime PM is allowed by default on the consumer to prevent
5612 * it from permanently keeping the supplier awake.
5614 static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5615 unsigned int supplier, unsigned int class,
5616 unsigned int class_shift)
5618 struct pci_dev *supplier_pdev;
5620 if (PCI_FUNC(pdev->devfn) != consumer)
5623 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5625 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5626 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5627 pci_dev_put(supplier_pdev);
5631 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5632 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5633 pci_info(pdev, "D0 power state depends on %s\n",
5634 pci_name(supplier_pdev));
5636 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5637 pci_name(supplier_pdev));
5639 pm_runtime_allow(&pdev->dev);
5640 pci_dev_put(supplier_pdev);
5644 * Create device link for GPUs with integrated HDA controller for streaming
5645 * audio to attached displays.
5647 static void quirk_gpu_hda(struct pci_dev *hda)
5649 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5651 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5652 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5653 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5654 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5655 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5656 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5659 * Create device link for GPUs with integrated USB xHCI Host
5660 * controller to VGA.
5662 static void quirk_gpu_usb(struct pci_dev *usb)
5664 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16);
5666 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5667 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5668 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5669 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5672 * Create device link for GPUs with integrated Type-C UCSI controller
5673 * to VGA. Currently there is no class code defined for UCSI device over PCI
5674 * so using UNKNOWN class for now and it will be updated when UCSI
5675 * over PCI gets a class code.
5677 #define PCI_CLASS_SERIAL_UNKNOWN 0x0c80
5678 static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
5680 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16);
5682 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5683 PCI_CLASS_SERIAL_UNKNOWN, 8,
5684 quirk_gpu_usb_typec_ucsi);
5685 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5686 PCI_CLASS_SERIAL_UNKNOWN, 8,
5687 quirk_gpu_usb_typec_ucsi);
5690 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
5691 * disabled. https://devtalk.nvidia.com/default/topic/1024022
5693 static void quirk_nvidia_hda(struct pci_dev *gpu)
5698 /* There was no integrated HDA controller before MCP89 */
5699 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M)
5702 /* Bit 25 at offset 0x488 enables the HDA controller */
5703 pci_read_config_dword(gpu, 0x488, &val);
5707 pci_info(gpu, "Enabling HDA controller\n");
5708 pci_write_config_dword(gpu, 0x488, val | BIT(25));
5710 /* The GPU becomes a multi-function device when the HDA is enabled */
5711 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
5712 gpu->multifunction = !!(hdr_type & 0x80);
5714 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5715 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5716 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5717 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5720 * Some IDT switches incorrectly flag an ACS Source Validation error on
5721 * completions for config read requests even though PCIe r4.0, sec
5722 * 6.12.1.1, says that completions are never affected by ACS Source
5723 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36:
5725 * Item #36 - Downstream port applies ACS Source Validation to Completions
5726 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that
5727 * completions are never affected by ACS Source Validation. However,
5728 * completions received by a downstream port of the PCIe switch from a
5729 * device that has not yet captured a PCIe bus number are incorrectly
5730 * dropped by ACS Source Validation by the switch downstream port.
5732 * The workaround suggested by IDT is to issue a config write to the
5733 * downstream device before issuing the first config read. This allows the
5734 * downstream device to capture its bus and device numbers (see PCIe r4.0,
5735 * sec 2.2.9), thus avoiding the ACS error on the completion.
5737 * However, we don't know when the device is ready to accept the config
5738 * write, so we do config reads until we receive a non-Config Request Retry
5739 * Status, then do the config write.
5741 * To avoid hitting the erratum when doing the config reads, we disable ACS
5742 * SV around this process.
5744 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
5749 struct pci_dev *bridge = bus->self;
5751 pos = bridge->acs_cap;
5753 /* Disable ACS SV before initial config reads */
5755 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl);
5756 if (ctrl & PCI_ACS_SV)
5757 pci_write_config_word(bridge, pos + PCI_ACS_CTRL,
5758 ctrl & ~PCI_ACS_SV);
5761 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);
5763 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */
5765 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0);
5767 /* Re-enable ACS_SV if it was previously enabled */
5768 if (ctrl & PCI_ACS_SV)
5769 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl);
5775 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between
5776 * NT endpoints via the internal switch fabric. These IDs replace the
5777 * originating Requester ID TLPs which access host memory on peer NTB
5778 * ports. Therefore, all proxy IDs must be aliased to the NTB device
5779 * to permit access when the IOMMU is turned on.
5781 static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
5784 struct ntb_info_regs __iomem *mmio_ntb;
5785 struct ntb_ctrl_regs __iomem *mmio_ctrl;
5790 if (pci_enable_device(pdev)) {
5791 pci_err(pdev, "Cannot enable Switchtec device\n");
5795 mmio = pci_iomap(pdev, 0, 0);
5797 pci_disable_device(pdev);
5798 pci_err(pdev, "Cannot iomap Switchtec device\n");
5802 pci_info(pdev, "Setting Switchtec proxy ID aliases\n");
5804 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
5805 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
5807 partition = ioread8(&mmio_ntb->partition_id);
5809 partition_map = ioread32(&mmio_ntb->ep_map);
5810 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32;
5811 partition_map &= ~(1ULL << partition);
5813 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) {
5814 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl;
5818 if (!(partition_map & (1ULL << pp)))
5821 pci_dbg(pdev, "Processing partition %d\n", pp);
5823 mmio_peer_ctrl = &mmio_ctrl[pp];
5825 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size);
5827 pci_warn(pdev, "Partition %d table_sz 0\n", pp);
5831 if (table_sz > 512) {
5833 "Invalid Switchtec partition %d table_sz %d\n",
5838 for (te = 0; te < table_sz; te++) {
5842 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]);
5843 devfn = (rid_entry >> 1) & 0xFF;
5845 "Aliasing Partition %d Proxy ID %02x.%d\n",
5846 pp, PCI_SLOT(devfn), PCI_FUNC(devfn));
5847 pci_add_dma_alias(pdev, devfn, 1);
5851 pci_iounmap(pdev, mmio);
5852 pci_disable_device(pdev);
5854 #define SWITCHTEC_QUIRK(vid) \
5855 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
5856 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
5858 SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */
5859 SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */
5860 SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */
5861 SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */
5862 SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */
5863 SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */
5864 SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */
5865 SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */
5866 SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */
5867 SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */
5868 SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */
5869 SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */
5870 SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */
5871 SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */
5872 SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */
5873 SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */
5874 SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */
5875 SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */
5876 SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */
5877 SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */
5878 SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */
5879 SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */
5880 SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */
5881 SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */
5882 SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */
5883 SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */
5884 SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */
5885 SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */
5886 SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */
5887 SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */
5888 SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */
5889 SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */
5890 SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */
5891 SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */
5892 SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */
5893 SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */
5894 SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */
5895 SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */
5896 SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */
5897 SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */
5898 SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */
5899 SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */
5900 SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */
5901 SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */
5902 SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */
5903 SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */
5904 SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */
5905 SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */
5906 SWITCHTEC_QUIRK(0x4352); /* PFXA 52XG4 */
5907 SWITCHTEC_QUIRK(0x4336); /* PFXA 36XG4 */
5908 SWITCHTEC_QUIRK(0x4328); /* PFXA 28XG4 */
5909 SWITCHTEC_QUIRK(0x4452); /* PSXA 52XG4 */
5910 SWITCHTEC_QUIRK(0x4436); /* PSXA 36XG4 */
5911 SWITCHTEC_QUIRK(0x4428); /* PSXA 28XG4 */
5912 SWITCHTEC_QUIRK(0x4552); /* PAXA 52XG4 */
5913 SWITCHTEC_QUIRK(0x4536); /* PAXA 36XG4 */
5914 SWITCHTEC_QUIRK(0x4528); /* PAXA 28XG4 */
5915 SWITCHTEC_QUIRK(0x5000); /* PFX 100XG5 */
5916 SWITCHTEC_QUIRK(0x5084); /* PFX 84XG5 */
5917 SWITCHTEC_QUIRK(0x5068); /* PFX 68XG5 */
5918 SWITCHTEC_QUIRK(0x5052); /* PFX 52XG5 */
5919 SWITCHTEC_QUIRK(0x5036); /* PFX 36XG5 */
5920 SWITCHTEC_QUIRK(0x5028); /* PFX 28XG5 */
5921 SWITCHTEC_QUIRK(0x5100); /* PSX 100XG5 */
5922 SWITCHTEC_QUIRK(0x5184); /* PSX 84XG5 */
5923 SWITCHTEC_QUIRK(0x5168); /* PSX 68XG5 */
5924 SWITCHTEC_QUIRK(0x5152); /* PSX 52XG5 */
5925 SWITCHTEC_QUIRK(0x5136); /* PSX 36XG5 */
5926 SWITCHTEC_QUIRK(0x5128); /* PSX 28XG5 */
5927 SWITCHTEC_QUIRK(0x5200); /* PAX 100XG5 */
5928 SWITCHTEC_QUIRK(0x5284); /* PAX 84XG5 */
5929 SWITCHTEC_QUIRK(0x5268); /* PAX 68XG5 */
5930 SWITCHTEC_QUIRK(0x5252); /* PAX 52XG5 */
5931 SWITCHTEC_QUIRK(0x5236); /* PAX 36XG5 */
5932 SWITCHTEC_QUIRK(0x5228); /* PAX 28XG5 */
5933 SWITCHTEC_QUIRK(0x5300); /* PFXA 100XG5 */
5934 SWITCHTEC_QUIRK(0x5384); /* PFXA 84XG5 */
5935 SWITCHTEC_QUIRK(0x5368); /* PFXA 68XG5 */
5936 SWITCHTEC_QUIRK(0x5352); /* PFXA 52XG5 */
5937 SWITCHTEC_QUIRK(0x5336); /* PFXA 36XG5 */
5938 SWITCHTEC_QUIRK(0x5328); /* PFXA 28XG5 */
5939 SWITCHTEC_QUIRK(0x5400); /* PSXA 100XG5 */
5940 SWITCHTEC_QUIRK(0x5484); /* PSXA 84XG5 */
5941 SWITCHTEC_QUIRK(0x5468); /* PSXA 68XG5 */
5942 SWITCHTEC_QUIRK(0x5452); /* PSXA 52XG5 */
5943 SWITCHTEC_QUIRK(0x5436); /* PSXA 36XG5 */
5944 SWITCHTEC_QUIRK(0x5428); /* PSXA 28XG5 */
5945 SWITCHTEC_QUIRK(0x5500); /* PAXA 100XG5 */
5946 SWITCHTEC_QUIRK(0x5584); /* PAXA 84XG5 */
5947 SWITCHTEC_QUIRK(0x5568); /* PAXA 68XG5 */
5948 SWITCHTEC_QUIRK(0x5552); /* PAXA 52XG5 */
5949 SWITCHTEC_QUIRK(0x5536); /* PAXA 36XG5 */
5950 SWITCHTEC_QUIRK(0x5528); /* PAXA 28XG5 */
5953 * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
5954 * These IDs are used to forward responses to the originator on the other
5955 * side of the NTB. Alias all possible IDs to the NTB to permit access when
5956 * the IOMMU is turned on.
5958 static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev)
5960 pci_info(pdev, "Setting PLX NTB proxy ID aliases\n");
5961 /* PLX NTB may use all 256 devfns */
5962 pci_add_dma_alias(pdev, 0, 256);
5964 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias);
5965 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias);
5968 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does
5969 * not always reset the secondary Nvidia GPU between reboots if the system
5970 * is configured to use Hybrid Graphics mode. This results in the GPU
5971 * being left in whatever state it was in during the *previous* boot, which
5972 * causes spurious interrupts from the GPU, which in turn causes us to
5973 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly,
5974 * this also completely breaks nouveau.
5976 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a
5977 * clean state and fixes all these issues.
5979 * When the machine is configured in Dedicated display mode, the issue
5980 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this
5981 * mode, so we can detect that and avoid resetting it.
5983 static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)
5988 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
5989 pdev->subsystem_device != 0x222e ||
5990 !pci_reset_supported(pdev))
5993 if (pci_enable_device_mem(pdev))
5997 * Based on nvkm_device_ctor() in
5998 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
6000 map = pci_iomap(pdev, 0, 0x23000);
6002 pci_err(pdev, "Can't map MMIO space\n");
6007 * Make sure the GPU looks like it's been POSTed before resetting
6010 if (ioread32(map + 0x2240c) & 0x2) {
6011 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n");
6012 ret = pci_reset_bus(pdev);
6014 pci_err(pdev, "Failed to reset GPU: %d\n", ret);
6019 pci_disable_device(pdev);
6021 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1,
6022 PCI_CLASS_DISPLAY_VGA, 8,
6023 quirk_reset_lenovo_thinkpad_p50_nvgpu);
6026 * Device [1b21:2142]
6027 * When in D0, PME# doesn't get asserted when plugging USB 3.0 device.
6029 static void pci_fixup_no_d0_pme(struct pci_dev *dev)
6031 pci_info(dev, "PME# does not work under D0, disabling it\n");
6032 dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT);
6034 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme);
6037 * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI]
6039 * These devices advertise PME# support in all power states but don't
6040 * reliably assert it.
6042 * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf)
6043 * says "The MSI Function is not implemented on this device" in chapters
6044 * 7.3.27, 7.3.29-7.3.31.
6046 static void pci_fixup_no_msi_no_pme(struct pci_dev *dev)
6048 #ifdef CONFIG_PCI_MSI
6049 pci_info(dev, "MSI is not implemented on this device, disabling it\n");
6052 pci_info(dev, "PME# is unreliable, disabling it\n");
6053 dev->pme_support = 0;
6055 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme);
6056 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme);
6058 static void apex_pci_fixup_class(struct pci_dev *pdev)
6060 pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class;
6062 DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
6063 PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);
6066 * Pericom PI7C9X2G404/PI7C9X2G304/PI7C9X2G303 switch erratum E5 -
6067 * ACS P2P Request Redirect is not functional
6069 * When ACS P2P Request Redirect is enabled and bandwidth is not balanced
6070 * between upstream and downstream ports, packets are queued in an internal
6071 * buffer until CPLD packet. The workaround is to use the switch in store and
6074 #define PI7C9X2Gxxx_MODE_REG 0x74
6075 #define PI7C9X2Gxxx_STORE_FORWARD_MODE BIT(0)
6076 static void pci_fixup_pericom_acs_store_forward(struct pci_dev *pdev)
6078 struct pci_dev *upstream;
6081 /* Downstream ports only */
6082 if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM)
6085 /* Check for ACS P2P Request Redirect use */
6088 pci_read_config_word(pdev, pdev->acs_cap + PCI_ACS_CTRL, &val);
6089 if (!(val & PCI_ACS_RR))
6092 upstream = pci_upstream_bridge(pdev);
6096 pci_read_config_word(upstream, PI7C9X2Gxxx_MODE_REG, &val);
6097 if (!(val & PI7C9X2Gxxx_STORE_FORWARD_MODE)) {
6098 pci_info(upstream, "Setting PI7C9X2Gxxx store-forward mode to avoid ACS erratum\n");
6099 pci_write_config_word(upstream, PI7C9X2Gxxx_MODE_REG, val |
6100 PI7C9X2Gxxx_STORE_FORWARD_MODE);
6104 * Apply fixup on enable and on resume, in order to apply the fix up whenever
6105 * ACS configuration changes or switch mode is reset
6107 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2404,
6108 pci_fixup_pericom_acs_store_forward);
6109 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2404,
6110 pci_fixup_pericom_acs_store_forward);
6111 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2304,
6112 pci_fixup_pericom_acs_store_forward);
6113 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2304,
6114 pci_fixup_pericom_acs_store_forward);
6115 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303,
6116 pci_fixup_pericom_acs_store_forward);
6117 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303,
6118 pci_fixup_pericom_acs_store_forward);
6120 static void nvidia_ion_ahci_fixup(struct pci_dev *pdev)
6122 pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING;
6124 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup);
6126 static void rom_bar_overlap_defect(struct pci_dev *dev)
6128 pci_info(dev, "working around ROM BAR overlap defect\n");
6129 dev->rom_bar_overlap = 1;
6131 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect);
6132 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect);
6133 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect);
6134 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect);
6136 #ifdef CONFIG_PCIEASPM
6138 * Several Intel DG2 graphics devices advertise that they can only tolerate
6139 * 1us latency when transitioning from L1 to L0, which may prevent ASPM L1
6140 * from being enabled. But in fact these devices can tolerate unlimited
6141 * latency. Override their Device Capabilities value to allow ASPM L1 to
6144 static void aspm_l1_acceptable_latency(struct pci_dev *dev)
6146 u32 l1_lat = FIELD_GET(PCI_EXP_DEVCAP_L1, dev->devcap);
6149 dev->devcap |= FIELD_PREP(PCI_EXP_DEVCAP_L1, 7);
6150 pci_info(dev, "ASPM: overriding L1 acceptable latency from %#x to 0x7\n",
6154 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f80, aspm_l1_acceptable_latency);
6155 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f81, aspm_l1_acceptable_latency);
6156 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f82, aspm_l1_acceptable_latency);
6157 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f83, aspm_l1_acceptable_latency);
6158 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f84, aspm_l1_acceptable_latency);
6159 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f85, aspm_l1_acceptable_latency);
6160 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f86, aspm_l1_acceptable_latency);
6161 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f87, aspm_l1_acceptable_latency);
6162 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f88, aspm_l1_acceptable_latency);
6163 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5690, aspm_l1_acceptable_latency);
6164 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5691, aspm_l1_acceptable_latency);
6165 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5692, aspm_l1_acceptable_latency);
6166 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5693, aspm_l1_acceptable_latency);
6167 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5694, aspm_l1_acceptable_latency);
6168 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5695, aspm_l1_acceptable_latency);
6169 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a0, aspm_l1_acceptable_latency);
6170 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a1, aspm_l1_acceptable_latency);
6171 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a2, aspm_l1_acceptable_latency);
6172 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a3, aspm_l1_acceptable_latency);
6173 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a4, aspm_l1_acceptable_latency);
6174 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a5, aspm_l1_acceptable_latency);
6175 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a6, aspm_l1_acceptable_latency);
6176 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b0, aspm_l1_acceptable_latency);
6177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b1, aspm_l1_acceptable_latency);
6178 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c0, aspm_l1_acceptable_latency);
6179 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency);
6182 #ifdef CONFIG_PCIE_DPC
6184 * Intel Ice Lake, Tiger Lake and Alder Lake BIOS has a bug that clears
6185 * the DPC RP PIO Log Size of the integrated Thunderbolt PCIe Root
6188 static void dpc_log_size(struct pci_dev *dev)
6192 dpc = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC);
6196 pci_read_config_word(dev, dpc + PCI_EXP_DPC_CAP, &val);
6197 if (!(val & PCI_EXP_DPC_CAP_RP_EXT))
6200 if (!((val & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8)) {
6201 pci_info(dev, "Overriding RP PIO Log Size to 4\n");
6202 dev->dpc_rp_log_size = 4;
6205 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x461f, dpc_log_size);
6206 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x462f, dpc_log_size);
6207 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x463f, dpc_log_size);
6208 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x466e, dpc_log_size);
6209 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1d, dpc_log_size);
6210 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1f, dpc_log_size);
6211 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a21, dpc_log_size);
6212 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a23, dpc_log_size);
6213 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a23, dpc_log_size);
6214 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a25, dpc_log_size);
6215 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a27, dpc_log_size);
6216 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a29, dpc_log_size);
6217 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size);
6218 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size);
6219 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size);
6220 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size);
6224 * For a PCI device with multiple downstream devices, its driver may use
6225 * a flattened device tree to describe the downstream devices.
6226 * To overlay the flattened device tree, the PCI device and all its ancestor
6227 * devices need to have device tree nodes on system base device tree. Thus,
6228 * before driver probing, it might need to add a device tree node as the final
6231 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node);
6232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node);
6233 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REDHAT, 0x0005, of_pci_make_dev_node);
6236 * Devices known to require a longer delay before first config space access
6237 * after reset recovery or resume from D3cold:
6239 * VideoPropulsion (aka Genroco) Torrent QN16e MPEG QAM Modulator
6241 static void pci_fixup_d3cold_delay_1sec(struct pci_dev *pdev)
6243 pdev->d3cold_delay = 1000;
6245 DECLARE_PCI_FIXUP_FINAL(0x5555, 0x0004, pci_fixup_d3cold_delay_1sec);