2 * This file contains work-arounds for many known PCI hardware
3 * bugs. Devices present only on certain architectures (host
4 * bridges et cetera) should be handled in arch-specific code.
6 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
8 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/export.h>
17 #include <linux/pci.h>
18 #include <linux/init.h>
19 #include <linux/delay.h>
20 #include <linux/acpi.h>
21 #include <linux/kallsyms.h>
22 #include <linux/dmi.h>
23 #include <linux/pci-aspm.h>
24 #include <linux/ioport.h>
25 #include <linux/sched.h>
26 #include <linux/ktime.h>
28 #include <linux/platform_data/x86/apple.h>
29 #include <asm/dma.h> /* isa_dma_bridge_buggy */
33 * Decoding should be disabled for a PCI device during BAR sizing to avoid
34 * conflict. But doing so may cause problems on host bridge and perhaps other
35 * key system devices. For devices that need to have mmio decoding always-on,
36 * we need to set the dev->mmio_always_on bit.
38 static void quirk_mmio_always_on(struct pci_dev *dev)
40 dev->mmio_always_on = 1;
42 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
43 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
45 /* The Mellanox Tavor device gives false positive parity errors
46 * Mark this device with a broken_parity_status, to allow
47 * PCI scanning code to "skip" this now blacklisted device.
49 static void quirk_mellanox_tavor(struct pci_dev *dev)
51 dev->broken_parity_status = 1; /* This device gives false positives */
53 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, quirk_mellanox_tavor);
54 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, quirk_mellanox_tavor);
56 /* Deal with broken BIOSes that neglect to enable passive release,
57 which can cause problems in combination with the 82441FX/PPro MTRRs */
58 static void quirk_passive_release(struct pci_dev *dev)
60 struct pci_dev *d = NULL;
63 /* We have to make sure a particular bit is set in the PIIX3
64 ISA bridge, so we have to go out and find it. */
65 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
66 pci_read_config_byte(d, 0x82, &dlc);
68 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
70 pci_write_config_byte(d, 0x82, dlc);
74 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
75 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
77 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
78 but VIA don't answer queries. If you happen to have good contacts at VIA
79 ask them for me please -- Alan
81 This appears to be BIOS not version dependent. So presumably there is a
84 static void quirk_isa_dma_hangs(struct pci_dev *dev)
86 if (!isa_dma_bridge_buggy) {
87 isa_dma_bridge_buggy = 1;
88 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
92 * Its not totally clear which chipsets are the problematic ones
93 * We know 82C586 and 82C596 variants are affected.
95 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
96 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
97 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
98 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
104 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
105 * for some HT machines to use C4 w/o hanging.
107 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
112 pci_read_config_dword(dev, 0x40, &pmbase);
113 pmbase = pmbase & 0xff80;
117 dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
121 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
124 * Chipsets where PCI->PCI transfers vanish or hang
126 static void quirk_nopcipci(struct pci_dev *dev)
128 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
129 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
130 pci_pci_problems |= PCIPCI_FAIL;
133 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
134 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
136 static void quirk_nopciamd(struct pci_dev *dev)
139 pci_read_config_byte(dev, 0x08, &rev);
142 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
143 pci_pci_problems |= PCIAGP_FAIL;
146 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
149 * Triton requires workarounds to be used by the drivers
151 static void quirk_triton(struct pci_dev *dev)
153 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
154 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
155 pci_pci_problems |= PCIPCI_TRITON;
158 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
159 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
160 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
161 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
164 * VIA Apollo KT133 needs PCI latency patch
165 * Made according to a windows driver based patch by George E. Breese
166 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
167 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
168 * the info on which Mr Breese based his work.
170 * Updated based on further information from the site and also on
171 * information provided by VIA
173 static void quirk_vialatency(struct pci_dev *dev)
177 /* Ok we have a potential problem chipset here. Now see if we have
178 a buggy southbridge */
180 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
182 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
183 /* Check for buggy part revisions */
184 if (p->revision < 0x40 || p->revision > 0x42)
187 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
188 if (p == NULL) /* No problem parts */
190 /* Check for buggy part revisions */
191 if (p->revision < 0x10 || p->revision > 0x12)
196 * Ok we have the problem. Now set the PCI master grant to
197 * occur every master grant. The apparent bug is that under high
198 * PCI load (quite common in Linux of course) you can get data
199 * loss when the CPU is held off the bus for 3 bus master requests
200 * This happens to include the IDE controllers....
202 * VIA only apply this fix when an SB Live! is present but under
203 * both Linux and Windows this isn't enough, and we have seen
204 * corruption without SB Live! but with things like 3 UDMA IDE
205 * controllers. So we ignore that bit of the VIA recommendation..
208 pci_read_config_byte(dev, 0x76, &busarb);
209 /* Set bit 4 and bi 5 of byte 76 to 0x01
210 "Master priority rotation on every PCI master grant */
213 pci_write_config_byte(dev, 0x76, busarb);
214 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
221 /* Must restore this on a resume from RAM */
222 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
223 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
224 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
227 * VIA Apollo VP3 needs ETBF on BT848/878
229 static void quirk_viaetbf(struct pci_dev *dev)
231 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
232 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
233 pci_pci_problems |= PCIPCI_VIAETBF;
236 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
238 static void quirk_vsfx(struct pci_dev *dev)
240 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
241 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
242 pci_pci_problems |= PCIPCI_VSFX;
245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
248 * Ali Magik requires workarounds to be used by the drivers
249 * that DMA to AGP space. Latency must be set to 0xA and triton
250 * workaround applied too
251 * [Info kindly provided by ALi]
253 static void quirk_alimagik(struct pci_dev *dev)
255 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
256 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
257 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
264 * Natoma has some interesting boundary conditions with Zoran stuff
267 static void quirk_natoma(struct pci_dev *dev)
269 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
270 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
271 pci_pci_problems |= PCIPCI_NATOMA;
274 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
275 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
278 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
282 * This chip can cause PCI parity errors if config register 0xA0 is read
283 * while DMAs are occurring.
285 static void quirk_citrine(struct pci_dev *dev)
287 dev->cfg_size = 0xA0;
289 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
292 * This chip can cause bus lockups if config addresses above 0x600
293 * are read or written.
295 static void quirk_nfp6000(struct pci_dev *dev)
297 dev->cfg_size = 0x600;
299 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
300 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
303 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
304 static void quirk_extend_bar_to_page(struct pci_dev *dev)
308 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
309 struct resource *r = &dev->resource[i];
311 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
312 r->end = PAGE_SIZE - 1;
314 r->flags |= IORESOURCE_UNSET;
315 dev_info(&dev->dev, "expanded BAR %d to page size: %pR\n",
320 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
323 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
324 * If it's needed, re-allocate the region.
326 static void quirk_s3_64M(struct pci_dev *dev)
328 struct resource *r = &dev->resource[0];
330 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
331 r->flags |= IORESOURCE_UNSET;
336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
339 static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
343 struct pci_bus_region bus_region;
344 struct resource *res = dev->resource + pos;
346 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
351 res->name = pci_name(dev);
352 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
354 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
355 region &= ~(size - 1);
357 /* Convert from PCI bus to resource space */
358 bus_region.start = region;
359 bus_region.end = region + size - 1;
360 pcibios_bus_to_resource(dev->bus, res, &bus_region);
362 dev_info(&dev->dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
363 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
367 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
368 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
369 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
370 * (which conflicts w/ BAR1's memory range).
372 * CS553x's ISA PCI BARs may also be read-only (ref:
373 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
375 static void quirk_cs5536_vsa(struct pci_dev *dev)
377 static char *name = "CS5536 ISA bridge";
379 if (pci_resource_len(dev, 0) != 8) {
380 quirk_io(dev, 0, 8, name); /* SMB */
381 quirk_io(dev, 1, 256, name); /* GPIO */
382 quirk_io(dev, 2, 64, name); /* MFGPT */
383 dev_info(&dev->dev, "%s bug detected (incorrect header); workaround applied\n",
387 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
389 static void quirk_io_region(struct pci_dev *dev, int port,
390 unsigned size, int nr, const char *name)
393 struct pci_bus_region bus_region;
394 struct resource *res = dev->resource + nr;
396 pci_read_config_word(dev, port, ®ion);
397 region &= ~(size - 1);
402 res->name = pci_name(dev);
403 res->flags = IORESOURCE_IO;
405 /* Convert from PCI bus to resource space */
406 bus_region.start = region;
407 bus_region.end = region + size - 1;
408 pcibios_bus_to_resource(dev->bus, res, &bus_region);
410 if (!pci_claim_resource(dev, nr))
411 dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
415 * ATI Northbridge setups MCE the processor if you even
416 * read somewhere between 0x3b0->0x3bb or read 0x3d3
418 static void quirk_ati_exploding_mce(struct pci_dev *dev)
420 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
421 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
422 request_region(0x3b0, 0x0C, "RadeonIGP");
423 request_region(0x3d3, 0x01, "RadeonIGP");
425 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
428 * In the AMD NL platform, this device ([1022:7912]) has a class code of
429 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
431 * But the dwc3 driver is a more specific driver for this device, and we'd
432 * prefer to use it instead of xhci. To prevent xhci from claiming the
433 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
434 * defines as "USB device (not host controller)". The dwc3 driver can then
435 * claim it based on its Vendor and Device ID.
437 static void quirk_amd_nl_class(struct pci_dev *pdev)
439 u32 class = pdev->class;
441 /* Use "USB Device (not host controller)" class */
442 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
443 dev_info(&pdev->dev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
450 * Let's make the southbridge information explicit instead
451 * of having to worry about people probing the ACPI areas,
452 * for example.. (Yes, it happens, and if you read the wrong
453 * ACPI register it will put the machine to sleep with no
454 * way of waking it up again. Bummer).
456 * ALI M7101: Two IO regions pointed to by words at
457 * 0xE0 (64 bytes of ACPI registers)
458 * 0xE2 (32 bytes of SMB registers)
460 static void quirk_ali7101_acpi(struct pci_dev *dev)
462 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
463 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
467 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
470 u32 mask, size, base;
472 pci_read_config_dword(dev, port, &devres);
473 if ((devres & enable) != enable)
475 mask = (devres >> 16) & 15;
476 base = devres & 0xffff;
479 unsigned bit = size >> 1;
480 if ((bit & mask) == bit)
485 * For now we only print it out. Eventually we'll want to
486 * reserve it (at least if it's in the 0x1000+ range), but
487 * let's get enough confirmation reports first.
490 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base,
494 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
497 u32 mask, size, base;
499 pci_read_config_dword(dev, port, &devres);
500 if ((devres & enable) != enable)
502 base = devres & 0xffff0000;
503 mask = (devres & 0x3f) << 16;
506 unsigned bit = size >> 1;
507 if ((bit & mask) == bit)
512 * For now we only print it out. Eventually we'll want to
513 * reserve it, but let's get enough confirmation reports first.
516 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base,
521 * PIIX4 ACPI: Two IO regions pointed to by longwords at
522 * 0x40 (64 bytes of ACPI registers)
523 * 0x90 (16 bytes of SMB registers)
524 * and a few strange programmable PIIX4 device resources.
526 static void quirk_piix4_acpi(struct pci_dev *dev)
530 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
531 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
533 /* Device resource A has enables for some of the other ones */
534 pci_read_config_dword(dev, 0x5c, &res_a);
536 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
537 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
539 /* Device resource D is just bitfields for static resources */
541 /* Device 12 enabled? */
542 if (res_a & (1 << 29)) {
543 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
544 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
546 /* Device 13 enabled? */
547 if (res_a & (1 << 30)) {
548 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
549 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
551 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
552 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
554 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
555 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
557 #define ICH_PMBASE 0x40
558 #define ICH_ACPI_CNTL 0x44
559 #define ICH4_ACPI_EN 0x10
560 #define ICH6_ACPI_EN 0x80
561 #define ICH4_GPIOBASE 0x58
562 #define ICH4_GPIO_CNTL 0x5c
563 #define ICH4_GPIO_EN 0x10
564 #define ICH6_GPIOBASE 0x48
565 #define ICH6_GPIO_CNTL 0x4c
566 #define ICH6_GPIO_EN 0x10
569 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
570 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
571 * 0x58 (64 bytes of GPIO I/O space)
573 static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
578 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
579 * with low legacy (and fixed) ports. We don't know the decoding
580 * priority and can't tell whether the legacy device or the one created
581 * here is really at that address. This happens on boards with broken
585 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
586 if (enable & ICH4_ACPI_EN)
587 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
588 "ICH4 ACPI/GPIO/TCO");
590 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
591 if (enable & ICH4_GPIO_EN)
592 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
595 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
596 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
597 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
598 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
599 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
600 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
606 static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
610 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
611 if (enable & ICH6_ACPI_EN)
612 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
613 "ICH6 ACPI/GPIO/TCO");
615 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
616 if (enable & ICH6_GPIO_EN)
617 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
621 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
626 pci_read_config_dword(dev, reg, &val);
634 * This is not correct. It is 16, 32 or 64 bytes depending on
635 * register D31:F0:ADh bits 5:4.
637 * But this gets us at least _part_ of it.
645 /* Just print it out for now. We should reserve it after more debugging */
646 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
649 static void quirk_ich6_lpc(struct pci_dev *dev)
651 /* Shared ACPI/GPIO decode with all ICH6+ */
652 ich6_lpc_acpi_gpio(dev);
654 /* ICH6-specific generic IO decode */
655 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
656 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
658 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
659 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
661 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
666 pci_read_config_dword(dev, reg, &val);
673 * IO base in bits 15:2, mask in bits 23:18, both
677 mask = (val >> 16) & 0xfc;
680 /* Just print it out for now. We should reserve it after more debugging */
681 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
684 /* ICH7-10 has the same common LPC generic IO decode registers */
685 static void quirk_ich7_lpc(struct pci_dev *dev)
687 /* We share the common ACPI/GPIO decode with ICH6 */
688 ich6_lpc_acpi_gpio(dev);
690 /* And have 4 ICH7+ generic decodes */
691 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
692 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
693 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
694 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
696 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
697 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
698 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
699 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
700 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
701 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
702 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
704 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
705 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
706 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
707 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
708 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
711 * VIA ACPI: One IO region pointed to by longword at
712 * 0x48 or 0x20 (256 bytes of ACPI registers)
714 static void quirk_vt82c586_acpi(struct pci_dev *dev)
716 if (dev->revision & 0x10)
717 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
720 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
723 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
724 * 0x48 (256 bytes of ACPI registers)
725 * 0x70 (128 bytes of hardware monitoring register)
726 * 0x90 (16 bytes of SMB registers)
728 static void quirk_vt82c686_acpi(struct pci_dev *dev)
730 quirk_vt82c586_acpi(dev);
732 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
735 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
737 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
740 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
741 * 0x88 (128 bytes of power management registers)
742 * 0xd0 (16 bytes of SMB registers)
744 static void quirk_vt8235_acpi(struct pci_dev *dev)
746 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
747 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
749 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
752 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
753 * Disable fast back-to-back on the secondary bus segment
755 static void quirk_xio2000a(struct pci_dev *dev)
757 struct pci_dev *pdev;
760 dev_warn(&dev->dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
761 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
762 pci_read_config_word(pdev, PCI_COMMAND, &command);
763 if (command & PCI_COMMAND_FAST_BACK)
764 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
767 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
770 #ifdef CONFIG_X86_IO_APIC
772 #include <asm/io_apic.h>
775 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
776 * devices to the external APIC.
778 * TODO: When we have device-specific interrupt routers,
779 * this code will go away from quirks.
781 static void quirk_via_ioapic(struct pci_dev *dev)
786 tmp = 0; /* nothing routed to external APIC */
788 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
790 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
791 tmp == 0 ? "Disa" : "Ena");
793 /* Offset 0x58: External APIC IRQ output control */
794 pci_write_config_byte(dev, 0x58, tmp);
796 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
797 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
800 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
801 * This leads to doubled level interrupt rates.
802 * Set this bit to get rid of cycle wastage.
803 * Otherwise uncritical.
805 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
808 #define BYPASS_APIC_DEASSERT 8
810 pci_read_config_byte(dev, 0x5B, &misc_control2);
811 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
812 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
813 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
816 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
817 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
820 * The AMD io apic can hang the box when an apic irq is masked.
821 * We check all revs >= B0 (yet not in the pre production!) as the bug
822 * is currently marked NoFix
824 * We have multiple reports of hangs with this chipset that went away with
825 * noapic specified. For the moment we assume it's the erratum. We may be wrong
826 * of course. However the advice is demonstrably good even if so..
828 static void quirk_amd_ioapic(struct pci_dev *dev)
830 if (dev->revision >= 0x02) {
831 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
832 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
835 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
836 #endif /* CONFIG_X86_IO_APIC */
838 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
840 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
842 /* Fix for improper SRIOV configuration on Cavium cn88xx RNM device */
843 if (dev->subsystem_device == 0xa118)
844 dev->sriov->link = dev->devfn;
846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
850 * Some settings of MMRBC can lead to data corruption so block changes.
851 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
853 static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
855 if (dev->subordinate && dev->revision <= 0x12) {
856 dev_info(&dev->dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
858 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
861 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
864 * FIXME: it is questionable that quirk_via_acpi
865 * is needed. It shows up as an ISA bridge, and does not
866 * support the PCI_INTERRUPT_LINE register at all. Therefore
867 * it seems like setting the pci_dev's 'irq' to the
868 * value of the ACPI SCI interrupt is only done for convenience.
871 static void quirk_via_acpi(struct pci_dev *d)
874 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
877 pci_read_config_byte(d, 0x42, &irq);
879 if (irq && (irq != 2))
882 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
887 * VIA bridges which have VLink
890 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
892 static void quirk_via_bridge(struct pci_dev *dev)
894 /* See what bridge we have and find the device ranges */
895 switch (dev->device) {
896 case PCI_DEVICE_ID_VIA_82C686:
897 /* The VT82C686 is special, it attaches to PCI and can have
898 any device number. All its subdevices are functions of
899 that single device. */
900 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
901 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
903 case PCI_DEVICE_ID_VIA_8237:
904 case PCI_DEVICE_ID_VIA_8237A:
905 via_vlink_dev_lo = 15;
907 case PCI_DEVICE_ID_VIA_8235:
908 via_vlink_dev_lo = 16;
910 case PCI_DEVICE_ID_VIA_8231:
911 case PCI_DEVICE_ID_VIA_8233_0:
912 case PCI_DEVICE_ID_VIA_8233A:
913 case PCI_DEVICE_ID_VIA_8233C_0:
914 via_vlink_dev_lo = 17;
918 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
919 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
920 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
921 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
923 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
924 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
925 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
928 * quirk_via_vlink - VIA VLink IRQ number update
931 * If the device we are dealing with is on a PIC IRQ we need to
932 * ensure that the IRQ line register which usually is not relevant
933 * for PCI cards, is actually written so that interrupts get sent
934 * to the right place.
935 * We only do this on systems where a VIA south bridge was detected,
936 * and only for VIA devices on the motherboard (see quirk_via_bridge
940 static void quirk_via_vlink(struct pci_dev *dev)
944 /* Check if we have VLink at all */
945 if (via_vlink_dev_lo == -1)
950 /* Don't quirk interrupts outside the legacy IRQ range */
951 if (!new_irq || new_irq > 15)
954 /* Internal device ? */
955 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
956 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
959 /* This is an internal VLink device on a PIC interrupt. The BIOS
960 ought to have set this but may not have, so we redo it */
962 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
963 if (new_irq != irq) {
964 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
966 udelay(15); /* unknown if delay really needed */
967 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
970 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
973 * VIA VT82C598 has its device ID settable and many BIOSes
974 * set it to the ID of VT82C597 for backward compatibility.
975 * We need to switch it off to be able to recognize the real
978 static void quirk_vt82c598_id(struct pci_dev *dev)
980 pci_write_config_byte(dev, 0xfc, 0);
981 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
983 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
986 * CardBus controllers have a legacy base address that enables them
987 * to respond as i82365 pcmcia controllers. We don't want them to
988 * do this even if the Linux CardBus driver is not loaded, because
989 * the Linux i82365 driver does not (and should not) handle CardBus.
991 static void quirk_cardbus_legacy(struct pci_dev *dev)
993 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
995 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
996 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
997 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
998 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1001 * Following the PCI ordering rules is optional on the AMD762. I'm not
1002 * sure what the designers were smoking but let's not inhale...
1004 * To be fair to AMD, it follows the spec by default, its BIOS people
1007 static void quirk_amd_ordering(struct pci_dev *dev)
1010 pci_read_config_dword(dev, 0x4C, &pcic);
1011 if ((pcic & 6) != 6) {
1013 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1014 pci_write_config_dword(dev, 0x4C, pcic);
1015 pci_read_config_dword(dev, 0x84, &pcic);
1016 pcic |= (1 << 23); /* Required in this mode */
1017 pci_write_config_dword(dev, 0x84, pcic);
1020 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1021 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1024 * DreamWorks provided workaround for Dunord I-3000 problem
1026 * This card decodes and responds to addresses not apparently
1027 * assigned to it. We force a larger allocation to ensure that
1028 * nothing gets put too close to it.
1030 static void quirk_dunord(struct pci_dev *dev)
1032 struct resource *r = &dev->resource[1];
1034 r->flags |= IORESOURCE_UNSET;
1038 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1041 * i82380FB mobile docking controller: its PCI-to-PCI bridge
1042 * is subtractive decoding (transparent), and does indicate this
1043 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
1046 static void quirk_transparent_bridge(struct pci_dev *dev)
1048 dev->transparent = 1;
1050 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1051 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1054 * Common misconfiguration of the MediaGX/Geode PCI master that will
1055 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
1056 * datasheets found at http://www.national.com/analog for info on what
1057 * these bits do. <christer@weinigel.se>
1059 static void quirk_mediagx_master(struct pci_dev *dev)
1063 pci_read_config_byte(dev, 0x41, ®);
1066 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1068 pci_write_config_byte(dev, 0x41, reg);
1071 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1072 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1075 * Ensure C0 rev restreaming is off. This is normally done by
1076 * the BIOS but in the odd case it is not the results are corruption
1077 * hence the presence of a Linux check
1079 static void quirk_disable_pxb(struct pci_dev *pdev)
1083 if (pdev->revision != 0x04) /* Only C0 requires this */
1085 pci_read_config_word(pdev, 0x40, &config);
1086 if (config & (1<<6)) {
1088 pci_write_config_word(pdev, 0x40, config);
1089 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
1092 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1093 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1095 static void quirk_amd_ide_mode(struct pci_dev *pdev)
1097 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1100 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1102 pci_read_config_byte(pdev, 0x40, &tmp);
1103 pci_write_config_byte(pdev, 0x40, tmp|1);
1104 pci_write_config_byte(pdev, 0x9, 1);
1105 pci_write_config_byte(pdev, 0xa, 6);
1106 pci_write_config_byte(pdev, 0x40, tmp);
1108 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1109 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1112 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1113 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1114 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1115 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1116 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1117 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1118 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1119 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1122 * Serverworks CSB5 IDE does not fully support native mode
1124 static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1127 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1131 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1132 /* PCI layer will sort out resources */
1135 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1138 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1140 static void quirk_ide_samemode(struct pci_dev *pdev)
1144 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1146 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1147 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1150 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1153 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1156 * Some ATA devices break if put into D3
1159 static void quirk_no_ata_d3(struct pci_dev *pdev)
1161 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1163 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1164 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1165 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1166 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1167 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1168 /* ALi loses some register settings that we cannot then restore */
1169 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1170 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1171 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1172 occur when mode detecting */
1173 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1174 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1176 /* This was originally an Alpha specific thing, but it really fits here.
1177 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1179 static void quirk_eisa_bridge(struct pci_dev *dev)
1181 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1183 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1187 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1188 * is not activated. The myth is that Asus said that they do not want the
1189 * users to be irritated by just another PCI Device in the Win98 device
1190 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1191 * package 2.7.0 for details)
1193 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1194 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1195 * becomes necessary to do this tweak in two steps -- the chosen trigger
1196 * is either the Host bridge (preferred) or on-board VGA controller.
1198 * Note that we used to unhide the SMBus that way on Toshiba laptops
1199 * (Satellite A40 and Tecra M2) but then found that the thermal management
1200 * was done by SMM code, which could cause unsynchronized concurrent
1201 * accesses to the SMBus registers, with potentially bad effects. Thus you
1202 * should be very careful when adding new entries: if SMM is accessing the
1203 * Intel SMBus, this is a very good reason to leave it hidden.
1205 * Likewise, many recent laptops use ACPI for thermal management. If the
1206 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1207 * natively, and keeping the SMBus hidden is the right thing to do. If you
1208 * are about to add an entry in the table below, please first disassemble
1209 * the DSDT and double-check that there is no code accessing the SMBus.
1211 static int asus_hides_smbus;
1213 static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1215 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1216 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1217 switch (dev->subsystem_device) {
1218 case 0x8025: /* P4B-LX */
1219 case 0x8070: /* P4B */
1220 case 0x8088: /* P4B533 */
1221 case 0x1626: /* L3C notebook */
1222 asus_hides_smbus = 1;
1224 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1225 switch (dev->subsystem_device) {
1226 case 0x80b1: /* P4GE-V */
1227 case 0x80b2: /* P4PE */
1228 case 0x8093: /* P4B533-V */
1229 asus_hides_smbus = 1;
1231 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1232 switch (dev->subsystem_device) {
1233 case 0x8030: /* P4T533 */
1234 asus_hides_smbus = 1;
1236 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1237 switch (dev->subsystem_device) {
1238 case 0x8070: /* P4G8X Deluxe */
1239 asus_hides_smbus = 1;
1241 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1242 switch (dev->subsystem_device) {
1243 case 0x80c9: /* PU-DLS */
1244 asus_hides_smbus = 1;
1246 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1247 switch (dev->subsystem_device) {
1248 case 0x1751: /* M2N notebook */
1249 case 0x1821: /* M5N notebook */
1250 case 0x1897: /* A6L notebook */
1251 asus_hides_smbus = 1;
1253 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1254 switch (dev->subsystem_device) {
1255 case 0x184b: /* W1N notebook */
1256 case 0x186a: /* M6Ne notebook */
1257 asus_hides_smbus = 1;
1259 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1260 switch (dev->subsystem_device) {
1261 case 0x80f2: /* P4P800-X */
1262 asus_hides_smbus = 1;
1264 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1265 switch (dev->subsystem_device) {
1266 case 0x1882: /* M6V notebook */
1267 case 0x1977: /* A6VA notebook */
1268 asus_hides_smbus = 1;
1270 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1271 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1272 switch (dev->subsystem_device) {
1273 case 0x088C: /* HP Compaq nc8000 */
1274 case 0x0890: /* HP Compaq nc6000 */
1275 asus_hides_smbus = 1;
1277 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1278 switch (dev->subsystem_device) {
1279 case 0x12bc: /* HP D330L */
1280 case 0x12bd: /* HP D530 */
1281 case 0x006a: /* HP Compaq nx9500 */
1282 asus_hides_smbus = 1;
1284 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1285 switch (dev->subsystem_device) {
1286 case 0x12bf: /* HP xw4100 */
1287 asus_hides_smbus = 1;
1289 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1290 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1291 switch (dev->subsystem_device) {
1292 case 0xC00C: /* Samsung P35 notebook */
1293 asus_hides_smbus = 1;
1295 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1296 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1297 switch (dev->subsystem_device) {
1298 case 0x0058: /* Compaq Evo N620c */
1299 asus_hides_smbus = 1;
1301 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1302 switch (dev->subsystem_device) {
1303 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1304 /* Motherboard doesn't have Host bridge
1305 * subvendor/subdevice IDs, therefore checking
1306 * its on-board VGA controller */
1307 asus_hides_smbus = 1;
1309 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1310 switch (dev->subsystem_device) {
1311 case 0x00b8: /* Compaq Evo D510 CMT */
1312 case 0x00b9: /* Compaq Evo D510 SFF */
1313 case 0x00ba: /* Compaq Evo D510 USDT */
1314 /* Motherboard doesn't have Host bridge
1315 * subvendor/subdevice IDs and on-board VGA
1316 * controller is disabled if an AGP card is
1317 * inserted, therefore checking USB UHCI
1319 asus_hides_smbus = 1;
1321 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1322 switch (dev->subsystem_device) {
1323 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1324 /* Motherboard doesn't have host bridge
1325 * subvendor/subdevice IDs, therefore checking
1326 * its on-board VGA controller */
1327 asus_hides_smbus = 1;
1331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1337 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1342 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1346 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1350 if (likely(!asus_hides_smbus))
1353 pci_read_config_word(dev, 0xF2, &val);
1355 pci_write_config_word(dev, 0xF2, val & (~0x8));
1356 pci_read_config_word(dev, 0xF2, &val);
1358 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1361 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1370 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1371 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1372 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1373 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1374 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1375 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1376 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1377 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1379 /* It appears we just have one such device. If not, we have a warning */
1380 static void __iomem *asus_rcba_base;
1381 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1385 if (likely(!asus_hides_smbus))
1387 WARN_ON(asus_rcba_base);
1389 pci_read_config_dword(dev, 0xF0, &rcba);
1390 /* use bits 31:14, 16 kB aligned */
1391 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1392 if (asus_rcba_base == NULL)
1396 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1400 if (likely(!asus_hides_smbus || !asus_rcba_base))
1402 /* read the Function Disable register, dword mode only */
1403 val = readl(asus_rcba_base + 0x3418);
1404 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1407 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1409 if (likely(!asus_hides_smbus || !asus_rcba_base))
1411 iounmap(asus_rcba_base);
1412 asus_rcba_base = NULL;
1413 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1416 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1418 asus_hides_smbus_lpc_ich6_suspend(dev);
1419 asus_hides_smbus_lpc_ich6_resume_early(dev);
1420 asus_hides_smbus_lpc_ich6_resume(dev);
1422 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1423 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1424 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1425 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1428 * SiS 96x south bridge: BIOS typically hides SMBus device...
1430 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1433 pci_read_config_byte(dev, 0x77, &val);
1435 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1436 pci_write_config_byte(dev, 0x77, val & ~0x10);
1439 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1440 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1443 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1444 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1445 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1446 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1449 * ... This is further complicated by the fact that some SiS96x south
1450 * bridges pretend to be 85C503/5513 instead. In that case see if we
1451 * spotted a compatible north bridge to make sure.
1452 * (pci_find_device doesn't work yet)
1454 * We can also enable the sis96x bit in the discovery register..
1456 #define SIS_DETECT_REGISTER 0x40
1458 static void quirk_sis_503(struct pci_dev *dev)
1463 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1464 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1465 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1466 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1467 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1472 * Ok, it now shows up as a 96x.. run the 96x quirk by
1473 * hand in case it has already been processed.
1474 * (depends on link order, which is apparently not guaranteed)
1476 dev->device = devid;
1477 quirk_sis_96x_smbus(dev);
1479 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1480 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1484 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1485 * and MC97 modem controller are disabled when a second PCI soundcard is
1486 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1489 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1492 int asus_hides_ac97 = 0;
1494 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1495 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1496 asus_hides_ac97 = 1;
1499 if (!asus_hides_ac97)
1502 pci_read_config_byte(dev, 0x50, &val);
1504 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1505 pci_read_config_byte(dev, 0x50, &val);
1507 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1510 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1514 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1516 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1519 * If we are using libata we can drive this chip properly but must
1520 * do this early on to make the additional device appear during
1523 static void quirk_jmicron_ata(struct pci_dev *pdev)
1525 u32 conf1, conf5, class;
1528 /* Only poke fn 0 */
1529 if (PCI_FUNC(pdev->devfn))
1532 pci_read_config_dword(pdev, 0x40, &conf1);
1533 pci_read_config_dword(pdev, 0x80, &conf5);
1535 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1536 conf5 &= ~(1 << 24); /* Clear bit 24 */
1538 switch (pdev->device) {
1539 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1540 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1541 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1542 /* The controller should be in single function ahci mode */
1543 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1546 case PCI_DEVICE_ID_JMICRON_JMB365:
1547 case PCI_DEVICE_ID_JMICRON_JMB366:
1548 /* Redirect IDE second PATA port to the right spot */
1551 case PCI_DEVICE_ID_JMICRON_JMB361:
1552 case PCI_DEVICE_ID_JMICRON_JMB363:
1553 case PCI_DEVICE_ID_JMICRON_JMB369:
1554 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1555 /* Set the class codes correctly and then direct IDE 0 */
1556 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1559 case PCI_DEVICE_ID_JMICRON_JMB368:
1560 /* The controller should be in single function IDE mode */
1561 conf1 |= 0x00C00000; /* Set 22, 23 */
1565 pci_write_config_dword(pdev, 0x40, conf1);
1566 pci_write_config_dword(pdev, 0x80, conf5);
1568 /* Update pdev accordingly */
1569 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1570 pdev->hdr_type = hdr & 0x7f;
1571 pdev->multifunction = !!(hdr & 0x80);
1573 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1574 pdev->class = class >> 8;
1576 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1577 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1578 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1579 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1580 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1581 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1582 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1583 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1584 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1585 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1586 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1587 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1588 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1589 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1590 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1591 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1592 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1593 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1597 static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1599 if (dev->multifunction) {
1600 device_disable_async_suspend(&dev->dev);
1601 dev_info(&dev->dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1604 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1605 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1607 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1609 #ifdef CONFIG_X86_IO_APIC
1610 static void quirk_alder_ioapic(struct pci_dev *pdev)
1614 if ((pdev->class >> 8) != 0xff00)
1617 /* the first BAR is the location of the IO APIC...we must
1618 * not touch this (and it's already covered by the fixmap), so
1619 * forcibly insert it into the resource tree */
1620 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1621 insert_resource(&iomem_resource, &pdev->resource[0]);
1623 /* The next five BARs all seem to be rubbish, so just clean
1625 for (i = 1; i < 6; i++)
1626 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1628 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1631 static void quirk_pcie_mch(struct pci_dev *pdev)
1635 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1636 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1637 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1638 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, quirk_pcie_mch);
1642 * It's possible for the MSI to get corrupted if shpc and acpi
1643 * are used together on certain PXH-based systems.
1645 static void quirk_pcie_pxh(struct pci_dev *dev)
1648 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1650 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1651 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1652 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1653 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1654 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1657 * Some Intel PCI Express chipsets have trouble with downstream
1658 * device power management.
1660 static void quirk_intel_pcie_pm(struct pci_dev *dev)
1662 pci_pm_d3_delay = 120;
1666 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1667 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1668 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1669 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1670 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1671 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1672 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1673 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1674 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1678 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1679 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1680 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1681 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1685 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1688 static void quirk_radeon_pm(struct pci_dev *dev)
1690 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1691 dev->subsystem_device == 0x00e2) {
1692 if (dev->d3_delay < 20) {
1694 dev_info(&dev->dev, "extending delay after power-on from D3 to %d msec\n",
1699 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1701 #ifdef CONFIG_X86_IO_APIC
1702 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1704 noioapicreroute = 1;
1705 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1710 static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1712 * Systems to exclude from boot interrupt reroute quirks
1715 .callback = dmi_disable_ioapicreroute,
1716 .ident = "ASUSTek Computer INC. M2N-LR",
1718 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1719 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1726 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1727 * remap the original interrupt in the linux kernel to the boot interrupt, so
1728 * that a PCI device's interrupt handler is installed on the boot interrupt
1731 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1733 dmi_check_system(boot_interrupt_dmi_table);
1734 if (noioapicquirk || noioapicreroute)
1737 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1738 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1739 dev->vendor, dev->device);
1741 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1742 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1743 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1744 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1745 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1746 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1747 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1749 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1750 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1751 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1752 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1753 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1754 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1755 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1756 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1759 * On some chipsets we can disable the generation of legacy INTx boot
1764 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1765 * 300641-004US, section 5.7.3.
1767 #define INTEL_6300_IOAPIC_ABAR 0x40
1768 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1770 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1772 u16 pci_config_word;
1777 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1778 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1779 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1781 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1782 dev->vendor, dev->device);
1784 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1785 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1788 * disable boot interrupts on HT-1000
1790 #define BC_HT1000_FEATURE_REG 0x64
1791 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1792 #define BC_HT1000_MAP_IDX 0xC00
1793 #define BC_HT1000_MAP_DATA 0xC01
1795 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1797 u32 pci_config_dword;
1803 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1804 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1805 BC_HT1000_PIC_REGS_ENABLE);
1807 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1808 outb(irq, BC_HT1000_MAP_IDX);
1809 outb(0x00, BC_HT1000_MAP_DATA);
1812 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1814 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1815 dev->vendor, dev->device);
1817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1818 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1821 * disable boot interrupts on AMD and ATI chipsets
1824 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1825 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1826 * (due to an erratum).
1828 #define AMD_813X_MISC 0x40
1829 #define AMD_813X_NOIOAMODE (1<<0)
1830 #define AMD_813X_REV_B1 0x12
1831 #define AMD_813X_REV_B2 0x13
1833 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1835 u32 pci_config_dword;
1839 if ((dev->revision == AMD_813X_REV_B1) ||
1840 (dev->revision == AMD_813X_REV_B2))
1843 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1844 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1845 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1847 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1848 dev->vendor, dev->device);
1850 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1851 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1852 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1853 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1855 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1857 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1859 u16 pci_config_word;
1864 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1865 if (!pci_config_word) {
1866 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] already disabled\n",
1867 dev->vendor, dev->device);
1870 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1871 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1872 dev->vendor, dev->device);
1874 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1875 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1876 #endif /* CONFIG_X86_IO_APIC */
1879 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1880 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1881 * Re-allocate the region if needed...
1883 static void quirk_tc86c001_ide(struct pci_dev *dev)
1885 struct resource *r = &dev->resource[0];
1887 if (r->start & 0x8) {
1888 r->flags |= IORESOURCE_UNSET;
1893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1894 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1895 quirk_tc86c001_ide);
1898 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
1899 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
1900 * being read correctly if bit 7 of the base address is set.
1901 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
1902 * Re-allocate the regions to a 256-byte boundary if necessary.
1904 static void quirk_plx_pci9050(struct pci_dev *dev)
1908 /* Fixed in revision 2 (PCI 9052). */
1909 if (dev->revision >= 2)
1911 for (bar = 0; bar <= 1; bar++)
1912 if (pci_resource_len(dev, bar) == 0x80 &&
1913 (pci_resource_start(dev, bar) & 0x80)) {
1914 struct resource *r = &dev->resource[bar];
1915 dev_info(&dev->dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
1917 r->flags |= IORESOURCE_UNSET;
1922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
1925 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
1926 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
1927 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
1928 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
1930 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
1933 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
1934 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
1936 static void quirk_netmos(struct pci_dev *dev)
1938 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1939 unsigned int num_serial = dev->subsystem_device & 0xf;
1942 * These Netmos parts are multiport serial devices with optional
1943 * parallel ports. Even when parallel ports are present, they
1944 * are identified as class SERIAL, which means the serial driver
1945 * will claim them. To prevent this, mark them as class OTHER.
1946 * These combo devices should be claimed by parport_serial.
1948 * The subdevice ID is of the form 0x00PS, where <P> is the number
1949 * of parallel ports and <S> is the number of serial ports.
1951 switch (dev->device) {
1952 case PCI_DEVICE_ID_NETMOS_9835:
1953 /* Well, this rule doesn't hold for the following 9835 device */
1954 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1955 dev->subsystem_device == 0x0299)
1957 case PCI_DEVICE_ID_NETMOS_9735:
1958 case PCI_DEVICE_ID_NETMOS_9745:
1959 case PCI_DEVICE_ID_NETMOS_9845:
1960 case PCI_DEVICE_ID_NETMOS_9855:
1962 dev_info(&dev->dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
1963 dev->device, num_parallel, num_serial);
1964 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1965 (dev->class & 0xff);
1969 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
1970 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
1973 * Quirk non-zero PCI functions to route VPD access through function 0 for
1974 * devices that share VPD resources between functions. The functions are
1975 * expected to be identical devices.
1977 static void quirk_f0_vpd_link(struct pci_dev *dev)
1981 if (!PCI_FUNC(dev->devfn))
1984 f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
1988 if (f0->vpd && dev->class == f0->class &&
1989 dev->vendor == f0->vendor && dev->device == f0->device)
1990 dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
1994 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
1995 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
1997 static void quirk_e100_interrupt(struct pci_dev *dev)
2003 switch (dev->device) {
2004 /* PCI IDs taken from drivers/net/e100.c */
2006 case 0x1030 ... 0x1034:
2007 case 0x1038 ... 0x103E:
2008 case 0x1050 ... 0x1057:
2010 case 0x1064 ... 0x106B:
2011 case 0x1091 ... 0x1095:
2024 * Some firmware hands off the e100 with interrupts enabled,
2025 * which can cause a flood of interrupts if packets are
2026 * received before the driver attaches to the device. So
2027 * disable all e100 interrupts here. The driver will
2028 * re-enable them when it's ready.
2030 pci_read_config_word(dev, PCI_COMMAND, &command);
2032 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2036 * Check that the device is in the D0 power state. If it's not,
2037 * there is no point to look any further.
2040 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2041 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2045 /* Convert from PCI bus to resource space. */
2046 csr = ioremap(pci_resource_start(dev, 0), 8);
2048 dev_warn(&dev->dev, "Can't map e100 registers\n");
2052 cmd_hi = readb(csr + 3);
2054 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; disabling\n");
2060 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2061 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2064 * The 82575 and 82598 may experience data corruption issues when transitioning
2065 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2067 static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2069 dev_info(&dev->dev, "Disabling L0s\n");
2070 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2072 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2073 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2074 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2075 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2076 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2077 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2078 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2079 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2080 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2082 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2084 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2087 static void fixup_rev1_53c810(struct pci_dev *dev)
2089 u32 class = dev->class;
2092 * rev 1 ncr53c810 chips don't set the class at all which means
2093 * they don't get their resources remapped. Fix that here.
2098 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2099 dev_info(&dev->dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2102 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2104 /* Enable 1k I/O space granularity on the Intel P64H2 */
2105 static void quirk_p64h2_1k_io(struct pci_dev *dev)
2109 pci_read_config_word(dev, 0x40, &en1k);
2112 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
2113 dev->io_window_1k = 1;
2116 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2118 /* Under some circumstances, AER is not linked with extended capabilities.
2119 * Force it to be linked by setting the corresponding control bit in the
2122 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2125 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2127 pci_write_config_byte(dev, 0xf41, b | 0x20);
2128 dev_info(&dev->dev, "Linking AER extended capability\n");
2132 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2133 quirk_nvidia_ck804_pcie_aer_ext_cap);
2134 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2135 quirk_nvidia_ck804_pcie_aer_ext_cap);
2137 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2140 * Disable PCI Bus Parking and PCI Master read caching on CX700
2141 * which causes unspecified timing errors with a VT6212L on the PCI
2142 * bus leading to USB2.0 packet loss.
2144 * This quirk is only enabled if a second (on the external PCI bus)
2145 * VT6212L is found -- the CX700 core itself also contains a USB
2146 * host controller with the same PCI ID as the VT6212L.
2149 /* Count VT6212L instances */
2150 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2151 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2154 /* p should contain the first (internal) VT6212L -- see if we have
2155 an external one by searching again */
2156 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2161 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2163 /* Turn off PCI Bus Parking */
2164 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2166 dev_info(&dev->dev, "Disabling VIA CX700 PCI parking\n");
2170 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2172 /* Turn off PCI Master read caching */
2173 pci_write_config_byte(dev, 0x72, 0x0);
2175 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2176 pci_write_config_byte(dev, 0x75, 0x1);
2178 /* Disable "Read FIFO Timer" */
2179 pci_write_config_byte(dev, 0x77, 0x0);
2181 dev_info(&dev->dev, "Disabling VIA CX700 PCI caching\n");
2185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2188 * If a device follows the VPD format spec, the PCI core will not read or
2189 * write past the VPD End Tag. But some vendors do not follow the VPD
2190 * format spec, so we can't tell how much data is safe to access. Devices
2191 * may behave unpredictably if we access too much. Blacklist these devices
2192 * so we don't touch VPD at all.
2194 static void quirk_blacklist_vpd(struct pci_dev *dev)
2198 dev_warn(&dev->dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n");
2202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0060, quirk_blacklist_vpd);
2203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x007c, quirk_blacklist_vpd);
2204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0413, quirk_blacklist_vpd);
2205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0078, quirk_blacklist_vpd);
2206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0079, quirk_blacklist_vpd);
2207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0073, quirk_blacklist_vpd);
2208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x0071, quirk_blacklist_vpd);
2209 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005b, quirk_blacklist_vpd);
2210 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x002f, quirk_blacklist_vpd);
2211 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005d, quirk_blacklist_vpd);
2212 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
2213 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID,
2214 quirk_blacklist_vpd);
2215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
2218 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2219 * VPD end tag will hang the device. This problem was initially
2220 * observed when a vpd entry was created in sysfs
2221 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2222 * will dump 32k of data. Reading a full 32k will cause an access
2223 * beyond the VPD end tag causing the device to hang. Once the device
2224 * is hung, the bnx2 driver will not be able to reset the device.
2225 * We believe that it is legal to read beyond the end tag and
2226 * therefore the solution is to limit the read/write length.
2228 static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
2231 * Only disable the VPD capability for 5706, 5706S, 5708,
2232 * 5708S and 5709 rev. A
2234 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
2235 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
2236 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
2237 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
2238 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2239 (dev->revision & 0xf0) == 0x0)) {
2241 dev->vpd->len = 0x80;
2245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2246 PCI_DEVICE_ID_NX2_5706,
2247 quirk_brcm_570x_limit_vpd);
2248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2249 PCI_DEVICE_ID_NX2_5706S,
2250 quirk_brcm_570x_limit_vpd);
2251 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2252 PCI_DEVICE_ID_NX2_5708,
2253 quirk_brcm_570x_limit_vpd);
2254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2255 PCI_DEVICE_ID_NX2_5708S,
2256 quirk_brcm_570x_limit_vpd);
2257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2258 PCI_DEVICE_ID_NX2_5709,
2259 quirk_brcm_570x_limit_vpd);
2260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2261 PCI_DEVICE_ID_NX2_5709S,
2262 quirk_brcm_570x_limit_vpd);
2264 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2268 pci_read_config_dword(dev, 0xf4, &rev);
2270 /* Only CAP the MRRS if the device is a 5719 A0 */
2271 if (rev == 0x05719000) {
2272 int readrq = pcie_get_readrq(dev);
2274 pcie_set_readrq(dev, 2048);
2278 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2279 PCI_DEVICE_ID_TIGON3_5719,
2280 quirk_brcm_5719_limit_mrrs);
2282 #ifdef CONFIG_PCIE_IPROC_PLATFORM
2283 static void quirk_paxc_bridge(struct pci_dev *pdev)
2285 /* The PCI config space is shared with the PAXC root port and the first
2286 * Ethernet device. So, we need to workaround this by telling the PCI
2287 * code that the bridge is not an Ethernet device.
2289 if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
2290 pdev->class = PCI_CLASS_BRIDGE_PCI << 8;
2292 /* MPSS is not being set properly (as it is currently 0). This is
2293 * because that area of the PCI config space is hard coded to zero, and
2294 * is not modifiable by firmware. Set this to 2 (e.g., 512 byte MPS)
2295 * so that the MPS can be set to the real max value.
2297 pdev->pcie_mpss = 2;
2299 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16cd, quirk_paxc_bridge);
2300 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16f0, quirk_paxc_bridge);
2303 /* Originally in EDAC sources for i82875P:
2304 * Intel tells BIOS developers to hide device 6 which
2305 * configures the overflow device access containing
2306 * the DRBs - this is where we expose device 6.
2307 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2309 static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2313 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2314 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2315 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2319 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2320 quirk_unhide_mch_dev6);
2321 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2322 quirk_unhide_mch_dev6);
2324 #ifdef CONFIG_TILEPRO
2326 * The Tilera TILEmpower tilepro platform needs to set the link speed
2327 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
2328 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
2329 * capability register of the PEX8624 PCIe switch. The switch
2330 * supports link speed auto negotiation, but falsely sets
2331 * the link speed to 5GT/s.
2333 static void quirk_tile_plx_gen1(struct pci_dev *dev)
2335 if (tile_plx_gen1) {
2336 pci_write_config_dword(dev, 0x98, 0x1);
2340 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
2341 #endif /* CONFIG_TILEPRO */
2343 #ifdef CONFIG_PCI_MSI
2344 /* Some chipsets do not support MSI. We cannot easily rely on setting
2345 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2346 * some other buses controlled by the chipset even if Linux is not
2347 * aware of it. Instead of setting the flag on all buses in the
2348 * machine, simply disable MSI globally.
2350 static void quirk_disable_all_msi(struct pci_dev *dev)
2353 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2355 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2356 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2357 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2358 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2359 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2361 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2362 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2364 /* Disable MSI on chipsets that are known to not support it */
2365 static void quirk_disable_msi(struct pci_dev *dev)
2367 if (dev->subordinate) {
2368 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2369 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2372 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2373 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2374 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2377 * The APC bridge device in AMD 780 family northbridges has some random
2378 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2379 * we use the possible vendor/device IDs of the host bridge for the
2380 * declared quirk, and search for the APC bridge by slot number.
2382 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2384 struct pci_dev *apc_bridge;
2386 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2388 if (apc_bridge->device == 0x9602)
2389 quirk_disable_msi(apc_bridge);
2390 pci_dev_put(apc_bridge);
2393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2396 /* Go through the list of Hypertransport capabilities and
2397 * return 1 if a HT MSI capability is found and enabled */
2398 static int msi_ht_cap_enabled(struct pci_dev *dev)
2400 int pos, ttl = PCI_FIND_CAP_TTL;
2402 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2403 while (pos && ttl--) {
2406 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2408 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2409 flags & HT_MSI_FLAGS_ENABLE ?
2410 "enabled" : "disabled");
2411 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2414 pos = pci_find_next_ht_capability(dev, pos,
2415 HT_CAPTYPE_MSI_MAPPING);
2420 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2421 static void quirk_msi_ht_cap(struct pci_dev *dev)
2423 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2424 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2425 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2431 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2432 * MSI are supported if the MSI capability set in any of these mappings.
2434 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2436 struct pci_dev *pdev;
2438 if (!dev->subordinate)
2441 /* check HT MSI cap on this chipset and the root one.
2442 * a single one having MSI is enough to be sure that MSI are supported.
2444 pdev = pci_get_slot(dev->bus, 0);
2447 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2448 dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n");
2449 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2453 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2454 quirk_nvidia_ck804_msi_ht_cap);
2456 /* Force enable MSI mapping capability on HT bridges */
2457 static void ht_enable_msi_mapping(struct pci_dev *dev)
2459 int pos, ttl = PCI_FIND_CAP_TTL;
2461 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2462 while (pos && ttl--) {
2465 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2467 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2469 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2470 flags | HT_MSI_FLAGS_ENABLE);
2472 pos = pci_find_next_ht_capability(dev, pos,
2473 HT_CAPTYPE_MSI_MAPPING);
2476 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2477 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2478 ht_enable_msi_mapping);
2480 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2481 ht_enable_msi_mapping);
2483 /* The P5N32-SLI motherboards from Asus have a problem with msi
2484 * for the MCP55 NIC. It is not yet determined whether the msi problem
2485 * also affects other devices. As for now, turn off msi for this device.
2487 static void nvenet_msi_disable(struct pci_dev *dev)
2489 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2492 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2493 strstr(board_name, "P5N32-E SLI"))) {
2494 dev_info(&dev->dev, "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2498 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2499 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2500 nvenet_msi_disable);
2503 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2504 * config register. This register controls the routing of legacy
2505 * interrupts from devices that route through the MCP55. If this register
2506 * is misprogrammed, interrupts are only sent to the BSP, unlike
2507 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2508 * having this register set properly prevents kdump from booting up
2509 * properly, so let's make sure that we have it set correctly.
2510 * Note that this is an undocumented register.
2512 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2516 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2519 pci_read_config_dword(dev, 0x74, &cfg);
2521 if (cfg & ((1 << 2) | (1 << 15))) {
2522 printk(KERN_INFO "Rewriting irq routing register on MCP55\n");
2523 cfg &= ~((1 << 2) | (1 << 15));
2524 pci_write_config_dword(dev, 0x74, cfg);
2528 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2529 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2530 nvbridge_check_legacy_irq_routing);
2532 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2533 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2534 nvbridge_check_legacy_irq_routing);
2536 static int ht_check_msi_mapping(struct pci_dev *dev)
2538 int pos, ttl = PCI_FIND_CAP_TTL;
2541 /* check if there is HT MSI cap or enabled on this device */
2542 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2543 while (pos && ttl--) {
2548 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2550 if (flags & HT_MSI_FLAGS_ENABLE) {
2557 pos = pci_find_next_ht_capability(dev, pos,
2558 HT_CAPTYPE_MSI_MAPPING);
2564 static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2566 struct pci_dev *dev;
2571 dev_no = host_bridge->devfn >> 3;
2572 for (i = dev_no + 1; i < 0x20; i++) {
2573 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2577 /* found next host bridge ?*/
2578 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2584 if (ht_check_msi_mapping(dev)) {
2595 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2596 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2598 static int is_end_of_ht_chain(struct pci_dev *dev)
2604 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2609 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2611 ctrl_off = ((flags >> 10) & 1) ?
2612 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2613 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2615 if (ctrl & (1 << 6))
2622 static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2624 struct pci_dev *host_bridge;
2629 dev_no = dev->devfn >> 3;
2630 for (i = dev_no; i >= 0; i--) {
2631 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2635 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2640 pci_dev_put(host_bridge);
2646 /* don't enable end_device/host_bridge with leaf directly here */
2647 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2648 host_bridge_with_leaf(host_bridge))
2651 /* root did that ! */
2652 if (msi_ht_cap_enabled(host_bridge))
2655 ht_enable_msi_mapping(dev);
2658 pci_dev_put(host_bridge);
2661 static void ht_disable_msi_mapping(struct pci_dev *dev)
2663 int pos, ttl = PCI_FIND_CAP_TTL;
2665 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2666 while (pos && ttl--) {
2669 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2671 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2673 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2674 flags & ~HT_MSI_FLAGS_ENABLE);
2676 pos = pci_find_next_ht_capability(dev, pos,
2677 HT_CAPTYPE_MSI_MAPPING);
2681 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2683 struct pci_dev *host_bridge;
2687 if (!pci_msi_enabled())
2690 /* check if there is HT MSI cap or enabled on this device */
2691 found = ht_check_msi_mapping(dev);
2698 * HT MSI mapping should be disabled on devices that are below
2699 * a non-Hypertransport host bridge. Locate the host bridge...
2701 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2702 if (host_bridge == NULL) {
2703 dev_warn(&dev->dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2707 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2709 /* Host bridge is to HT */
2711 /* it is not enabled, try to enable it */
2713 ht_enable_msi_mapping(dev);
2715 nv_ht_enable_msi_mapping(dev);
2720 /* HT MSI is not enabled */
2724 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2725 ht_disable_msi_mapping(dev);
2728 pci_dev_put(host_bridge);
2731 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2733 return __nv_msi_ht_cap_quirk(dev, 1);
2736 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2738 return __nv_msi_ht_cap_quirk(dev, 0);
2741 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2742 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2744 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2745 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2747 static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2749 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2751 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2755 /* SB700 MSI issue will be fixed at HW level from revision A21,
2756 * we need check PCI REVISION ID of SMBus controller to get SB700
2759 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2764 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2765 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2768 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2770 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2771 if (dev->revision < 0x18) {
2772 dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n");
2773 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2776 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2777 PCI_DEVICE_ID_TIGON3_5780,
2778 quirk_msi_intx_disable_bug);
2779 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2780 PCI_DEVICE_ID_TIGON3_5780S,
2781 quirk_msi_intx_disable_bug);
2782 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2783 PCI_DEVICE_ID_TIGON3_5714,
2784 quirk_msi_intx_disable_bug);
2785 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2786 PCI_DEVICE_ID_TIGON3_5714S,
2787 quirk_msi_intx_disable_bug);
2788 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2789 PCI_DEVICE_ID_TIGON3_5715,
2790 quirk_msi_intx_disable_bug);
2791 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2792 PCI_DEVICE_ID_TIGON3_5715S,
2793 quirk_msi_intx_disable_bug);
2795 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2796 quirk_msi_intx_disable_ati_bug);
2797 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2798 quirk_msi_intx_disable_ati_bug);
2799 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2800 quirk_msi_intx_disable_ati_bug);
2801 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2802 quirk_msi_intx_disable_ati_bug);
2803 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2804 quirk_msi_intx_disable_ati_bug);
2806 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2807 quirk_msi_intx_disable_bug);
2808 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2809 quirk_msi_intx_disable_bug);
2810 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2811 quirk_msi_intx_disable_bug);
2813 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2814 quirk_msi_intx_disable_bug);
2815 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2816 quirk_msi_intx_disable_bug);
2817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2818 quirk_msi_intx_disable_bug);
2819 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2820 quirk_msi_intx_disable_bug);
2821 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2822 quirk_msi_intx_disable_bug);
2823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
2824 quirk_msi_intx_disable_bug);
2825 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
2826 quirk_msi_intx_disable_qca_bug);
2827 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
2828 quirk_msi_intx_disable_qca_bug);
2829 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
2830 quirk_msi_intx_disable_qca_bug);
2831 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
2832 quirk_msi_intx_disable_qca_bug);
2833 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
2834 quirk_msi_intx_disable_qca_bug);
2835 #endif /* CONFIG_PCI_MSI */
2837 /* Allow manual resource allocation for PCI hotplug bridges
2838 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2839 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2840 * kernel fails to allocate resources when hotplug device is
2841 * inserted and PCI bus is rescanned.
2843 static void quirk_hotplug_bridge(struct pci_dev *dev)
2845 dev->is_hotplug_bridge = 1;
2848 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
2851 * This is a quirk for the Ricoh MMC controller found as a part of
2852 * some mulifunction chips.
2854 * This is very similar and based on the ricoh_mmc driver written by
2855 * Philip Langdale. Thank you for these magic sequences.
2857 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2858 * and one or both of cardbus or firewire.
2860 * It happens that they implement SD and MMC
2861 * support as separate controllers (and PCI functions). The linux SDHCI
2862 * driver supports MMC cards but the chip detects MMC cards in hardware
2863 * and directs them to the MMC controller - so the SDHCI driver never sees
2866 * To get around this, we must disable the useless MMC controller.
2867 * At that point, the SDHCI controller will start seeing them
2868 * It seems to be the case that the relevant PCI registers to deactivate the
2869 * MMC controller live on PCI function 0, which might be the cardbus controller
2870 * or the firewire controller, depending on the particular chip in question
2872 * This has to be done early, because as soon as we disable the MMC controller
2873 * other pci functions shift up one level, e.g. function #2 becomes function
2874 * #1, and this will confuse the pci core.
2877 #ifdef CONFIG_MMC_RICOH_MMC
2878 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
2880 /* disable via cardbus interface */
2885 /* disable must be done via function #0 */
2886 if (PCI_FUNC(dev->devfn))
2889 pci_read_config_byte(dev, 0xB7, &disable);
2893 pci_read_config_byte(dev, 0x8E, &write_enable);
2894 pci_write_config_byte(dev, 0x8E, 0xAA);
2895 pci_read_config_byte(dev, 0x8D, &write_target);
2896 pci_write_config_byte(dev, 0x8D, 0xB7);
2897 pci_write_config_byte(dev, 0xB7, disable | 0x02);
2898 pci_write_config_byte(dev, 0x8E, write_enable);
2899 pci_write_config_byte(dev, 0x8D, write_target);
2901 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2902 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2904 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2905 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
2907 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
2909 /* disable via firewire interface */
2913 /* disable must be done via function #0 */
2914 if (PCI_FUNC(dev->devfn))
2917 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
2918 * certain types of SD/MMC cards. Lowering the SD base
2919 * clock frequency from 200Mhz to 50Mhz fixes this issue.
2921 * 0x150 - SD2.0 mode enable for changing base clock
2922 * frequency to 50Mhz
2923 * 0xe1 - Base clock frequency
2924 * 0x32 - 50Mhz new clock frequency
2925 * 0xf9 - Key register for 0x150
2926 * 0xfc - key register for 0xe1
2928 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
2929 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
2930 pci_write_config_byte(dev, 0xf9, 0xfc);
2931 pci_write_config_byte(dev, 0x150, 0x10);
2932 pci_write_config_byte(dev, 0xf9, 0x00);
2933 pci_write_config_byte(dev, 0xfc, 0x01);
2934 pci_write_config_byte(dev, 0xe1, 0x32);
2935 pci_write_config_byte(dev, 0xfc, 0x00);
2937 dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n");
2940 pci_read_config_byte(dev, 0xCB, &disable);
2945 pci_read_config_byte(dev, 0xCA, &write_enable);
2946 pci_write_config_byte(dev, 0xCA, 0x57);
2947 pci_write_config_byte(dev, 0xCB, disable | 0x02);
2948 pci_write_config_byte(dev, 0xCA, write_enable);
2950 dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2951 dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n");
2954 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2955 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
2956 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2957 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
2958 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2959 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
2960 #endif /*CONFIG_MMC_RICOH_MMC*/
2962 #ifdef CONFIG_DMAR_TABLE
2963 #define VTUNCERRMSK_REG 0x1ac
2964 #define VTD_MSK_SPEC_ERRORS (1 << 31)
2966 * This is a quirk for masking vt-d spec defined errors to platform error
2967 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
2968 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
2969 * on the RAS config settings of the platform) when a vt-d fault happens.
2970 * The resulting SMI caused the system to hang.
2972 * VT-d spec related errors are already handled by the VT-d OS code, so no
2973 * need to report the same error through other channels.
2975 static void vtd_mask_spec_errors(struct pci_dev *dev)
2979 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
2980 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
2982 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
2983 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
2986 static void fixup_ti816x_class(struct pci_dev *dev)
2988 u32 class = dev->class;
2990 /* TI 816x devices do not have class code set when in PCIe boot mode */
2991 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
2992 dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n",
2995 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
2996 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
2998 /* Some PCIe devices do not work reliably with the claimed maximum
2999 * payload size supported.
3001 static void fixup_mpss_256(struct pci_dev *dev)
3003 dev->pcie_mpss = 1; /* 256 bytes */
3005 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3006 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3007 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3008 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3009 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3010 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3012 /* Intel 5000 and 5100 Memory controllers have an errata with read completion
3013 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3014 * Since there is no way of knowing what the PCIE MPS on each fabric will be
3015 * until all of the devices are discovered and buses walked, read completion
3016 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3017 * it is possible to hotplug a device with MPS of 256B.
3019 static void quirk_intel_mc_errata(struct pci_dev *dev)
3024 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3025 pcie_bus_config == PCIE_BUS_DEFAULT)
3028 /* Intel errata specifies bits to change but does not say what they are.
3029 * Keeping them magical until such time as the registers and values can
3032 err = pci_read_config_word(dev, 0x48, &rcc);
3034 dev_err(&dev->dev, "Error attempting to read the read completion coalescing register\n");
3038 if (!(rcc & (1 << 10)))
3043 err = pci_write_config_word(dev, 0x48, rcc);
3045 dev_err(&dev->dev, "Error attempting to write the read completion coalescing register\n");
3049 pr_info_once("Read completion coalescing disabled due to hardware errata relating to 256B MPS\n");
3051 /* Intel 5000 series memory controllers and ports 2-7 */
3052 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3053 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3054 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3055 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3056 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3057 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3058 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3059 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3060 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3061 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3062 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3063 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3064 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3065 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3066 /* Intel 5100 series memory controllers and ports 2-7 */
3067 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3068 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3069 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3070 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3071 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3072 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3073 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3075 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3076 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3077 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3081 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To
3082 * work around this, query the size it should be configured to by the device and
3083 * modify the resource end to correspond to this new size.
3085 static void quirk_intel_ntb(struct pci_dev *dev)
3090 rc = pci_read_config_byte(dev, 0x00D0, &val);
3094 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3096 rc = pci_read_config_byte(dev, 0x00D1, &val);
3100 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3102 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3103 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3105 static ktime_t fixup_debug_start(struct pci_dev *dev,
3106 void (*fn)(struct pci_dev *dev))
3108 ktime_t calltime = 0;
3110 dev_dbg(&dev->dev, "calling %pF\n", fn);
3111 if (initcall_debug) {
3112 pr_debug("calling %pF @ %i for %s\n",
3113 fn, task_pid_nr(current), dev_name(&dev->dev));
3114 calltime = ktime_get();
3120 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
3121 void (*fn)(struct pci_dev *dev))
3123 ktime_t delta, rettime;
3124 unsigned long long duration;
3126 if (initcall_debug) {
3127 rettime = ktime_get();
3128 delta = ktime_sub(rettime, calltime);
3129 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
3130 pr_debug("pci fixup %pF returned after %lld usecs for %s\n",
3131 fn, duration, dev_name(&dev->dev));
3136 * Some BIOS implementations leave the Intel GPU interrupts enabled,
3137 * even though no one is handling them (f.e. i915 driver is never loaded).
3138 * Additionally the interrupt destination is not set up properly
3139 * and the interrupt ends up -somewhere-.
3141 * These spurious interrupts are "sticky" and the kernel disables
3142 * the (shared) interrupt line after 100.000+ generated interrupts.
3144 * Fix it by disabling the still enabled interrupts.
3145 * This resolves crashes often seen on monitor unplug.
3147 #define I915_DEIER_REG 0x4400c
3148 static void disable_igfx_irq(struct pci_dev *dev)
3150 void __iomem *regs = pci_iomap(dev, 0, 0);
3152 dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n");
3156 /* Check if any interrupt line is still enabled */
3157 if (readl(regs + I915_DEIER_REG) != 0) {
3158 dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3160 writel(0, regs + I915_DEIER_REG);
3163 pci_iounmap(dev, regs);
3165 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3166 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3167 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3170 * PCI devices which are on Intel chips can skip the 10ms delay
3171 * before entering D3 mode.
3173 static void quirk_remove_d3_delay(struct pci_dev *dev)
3177 /* C600 Series devices do not need 10ms d3_delay */
3178 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
3179 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
3180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
3181 /* Lynxpoint-H PCH devices do not need 10ms d3_delay */
3182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
3183 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
3184 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
3185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
3186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
3187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
3188 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
3189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
3190 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
3191 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
3192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
3193 /* Intel Cherrytrail devices do not need 10ms d3_delay */
3194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3_delay);
3195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
3196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
3197 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3_delay);
3198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
3199 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
3200 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3_delay);
3201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3_delay);
3202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3_delay);
3205 * Some devices may pass our check in pci_intx_mask_supported() if
3206 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3207 * support this feature.
3209 static void quirk_broken_intx_masking(struct pci_dev *dev)
3211 dev->broken_intx_masking = 1;
3213 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3214 quirk_broken_intx_masking);
3215 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3216 quirk_broken_intx_masking);
3219 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3220 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3222 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3224 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3225 quirk_broken_intx_masking);
3228 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3229 * DisINTx can be set but the interrupt status bit is non-functional.
3231 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572,
3232 quirk_broken_intx_masking);
3233 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574,
3234 quirk_broken_intx_masking);
3235 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580,
3236 quirk_broken_intx_masking);
3237 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581,
3238 quirk_broken_intx_masking);
3239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583,
3240 quirk_broken_intx_masking);
3241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584,
3242 quirk_broken_intx_masking);
3243 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585,
3244 quirk_broken_intx_masking);
3245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586,
3246 quirk_broken_intx_masking);
3247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587,
3248 quirk_broken_intx_masking);
3249 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588,
3250 quirk_broken_intx_masking);
3251 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589,
3252 quirk_broken_intx_masking);
3253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a,
3254 quirk_broken_intx_masking);
3255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b,
3256 quirk_broken_intx_masking);
3257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0,
3258 quirk_broken_intx_masking);
3259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1,
3260 quirk_broken_intx_masking);
3261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2,
3262 quirk_broken_intx_masking);
3264 static u16 mellanox_broken_intx_devs[] = {
3265 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3266 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3267 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3268 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3269 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3270 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3271 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3272 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3273 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3274 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3275 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3276 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3277 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3278 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3281 #define CONNECTX_4_CURR_MAX_MINOR 99
3282 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3285 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3286 * If so, don't mark it as broken.
3287 * FW minor > 99 means older FW version format and no INTx masking support.
3288 * FW minor < 14 means new FW version format and no INTx masking support.
3290 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3292 __be32 __iomem *fw_ver;
3300 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3301 if (pdev->device == mellanox_broken_intx_devs[i]) {
3302 pdev->broken_intx_masking = 1;
3307 /* Getting here means Connect-IB cards and up. Connect-IB has no INTx
3308 * support so shouldn't be checked further
3310 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3313 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3314 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3317 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3318 if (pci_enable_device_mem(pdev)) {
3319 dev_warn(&pdev->dev, "Can't enable device memory\n");
3323 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3325 dev_warn(&pdev->dev, "Can't map ConnectX-4 initialization segment\n");
3329 /* Reading from resource space should be 32b aligned */
3330 fw_maj_min = ioread32be(fw_ver);
3331 fw_sub_min = ioread32be(fw_ver + 1);
3332 fw_major = fw_maj_min & 0xffff;
3333 fw_minor = fw_maj_min >> 16;
3334 fw_subminor = fw_sub_min & 0xffff;
3335 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3336 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3337 dev_warn(&pdev->dev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n",
3338 fw_major, fw_minor, fw_subminor, pdev->device ==
3339 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3340 pdev->broken_intx_masking = 1;
3346 pci_disable_device(pdev);
3348 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3349 mellanox_check_broken_intx_masking);
3351 static void quirk_no_bus_reset(struct pci_dev *dev)
3353 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3357 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3358 * The device will throw a Link Down error on AER-capable systems and
3359 * regardless of AER, config space of the device is never accessible again
3360 * and typically causes the system to hang or reset when access is attempted.
3361 * http://www.spinics.net/lists/linux-pci/msg34797.html
3363 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3368 static void quirk_no_pm_reset(struct pci_dev *dev)
3371 * We can't do a bus reset on root bus devices, but an ineffective
3372 * PM reset may be better than nothing.
3374 if (!pci_is_root_bus(dev->bus))
3375 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3379 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3380 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3381 * to have no effect on the device: it retains the framebuffer contents and
3382 * monitor sync. Advertising this support makes other layers, like VFIO,
3383 * assume pci_reset_function() is viable for this device. Mark it as
3384 * unavailable to skip it when testing reset methods.
3386 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3387 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3390 * Thunderbolt controllers with broken MSI hotplug signaling:
3391 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3392 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3394 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3396 if (pdev->is_hotplug_bridge &&
3397 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3398 pdev->revision <= 1))
3401 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3402 quirk_thunderbolt_hotplug_msi);
3403 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3404 quirk_thunderbolt_hotplug_msi);
3405 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3406 quirk_thunderbolt_hotplug_msi);
3407 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3408 quirk_thunderbolt_hotplug_msi);
3409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3410 quirk_thunderbolt_hotplug_msi);
3412 static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
3414 pci_set_vpd_size(dev, 8192);
3417 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x20, quirk_chelsio_extend_vpd);
3418 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x21, quirk_chelsio_extend_vpd);
3419 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x22, quirk_chelsio_extend_vpd);
3420 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x23, quirk_chelsio_extend_vpd);
3421 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x24, quirk_chelsio_extend_vpd);
3422 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x25, quirk_chelsio_extend_vpd);
3423 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x26, quirk_chelsio_extend_vpd);
3424 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x30, quirk_chelsio_extend_vpd);
3425 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x31, quirk_chelsio_extend_vpd);
3426 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x32, quirk_chelsio_extend_vpd);
3427 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x35, quirk_chelsio_extend_vpd);
3428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x36, quirk_chelsio_extend_vpd);
3429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x37, quirk_chelsio_extend_vpd);
3433 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3435 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3436 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3437 * be present after resume if a device was plugged in before suspend.
3439 * The thunderbolt controller consists of a pcie switch with downstream
3440 * bridges leading to the NHI and to the tunnel pci bridges.
3442 * This quirk cuts power to the whole chip. Therefore we have to apply it
3443 * during suspend_noirq of the upstream bridge.
3445 * Power is automagically restored before resume. No action is needed.
3447 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3449 acpi_handle bridge, SXIO, SXFP, SXLV;
3451 if (!x86_apple_machine)
3453 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3455 bridge = ACPI_HANDLE(&dev->dev);
3459 * SXIO and SXLV are present only on machines requiring this quirk.
3460 * TB bridges in external devices might have the same device id as those
3461 * on the host, but they will not have the associated ACPI methods. This
3462 * implicitly checks that we are at the right bridge.
3464 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3465 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3466 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3468 dev_info(&dev->dev, "quirk: cutting power to thunderbolt controller...\n");
3470 /* magic sequence */
3471 acpi_execute_simple_method(SXIO, NULL, 1);
3472 acpi_execute_simple_method(SXFP, NULL, 0);
3474 acpi_execute_simple_method(SXLV, NULL, 0);
3475 acpi_execute_simple_method(SXIO, NULL, 0);
3476 acpi_execute_simple_method(SXLV, NULL, 0);
3478 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3479 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3480 quirk_apple_poweroff_thunderbolt);
3483 * Apple: Wait for the thunderbolt controller to reestablish pci tunnels.
3485 * During suspend the thunderbolt controller is reset and all pci
3486 * tunnels are lost. The NHI driver will try to reestablish all tunnels
3487 * during resume. We have to manually wait for the NHI since there is
3488 * no parent child relationship between the NHI and the tunneled
3491 static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev)
3493 struct pci_dev *sibling = NULL;
3494 struct pci_dev *nhi = NULL;
3496 if (!x86_apple_machine)
3498 if (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)
3501 * Find the NHI and confirm that we are a bridge on the tb host
3502 * controller and not on a tb endpoint.
3504 sibling = pci_get_slot(dev->bus, 0x0);
3506 goto out; /* we are the downstream bridge to the NHI */
3507 if (!sibling || !sibling->subordinate)
3509 nhi = pci_get_slot(sibling->subordinate, 0x0);
3512 if (nhi->vendor != PCI_VENDOR_ID_INTEL
3513 || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE &&
3514 nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C &&
3515 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI &&
3516 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI)
3517 || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8)
3519 dev_info(&dev->dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n");
3520 device_pm_wait_for_dev(&dev->dev, &nhi->dev);
3523 pci_dev_put(sibling);
3525 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3526 PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3527 quirk_apple_wait_for_thunderbolt);
3528 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3529 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3530 quirk_apple_wait_for_thunderbolt);
3531 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3532 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE,
3533 quirk_apple_wait_for_thunderbolt);
3534 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3535 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE,
3536 quirk_apple_wait_for_thunderbolt);
3539 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
3540 struct pci_fixup *end)
3544 for (; f < end; f++)
3545 if ((f->class == (u32) (dev->class >> f->class_shift) ||
3546 f->class == (u32) PCI_ANY_ID) &&
3547 (f->vendor == dev->vendor ||
3548 f->vendor == (u16) PCI_ANY_ID) &&
3549 (f->device == dev->device ||
3550 f->device == (u16) PCI_ANY_ID)) {
3551 calltime = fixup_debug_start(dev, f->hook);
3553 fixup_debug_report(dev, calltime, f->hook);
3557 extern struct pci_fixup __start_pci_fixups_early[];
3558 extern struct pci_fixup __end_pci_fixups_early[];
3559 extern struct pci_fixup __start_pci_fixups_header[];
3560 extern struct pci_fixup __end_pci_fixups_header[];
3561 extern struct pci_fixup __start_pci_fixups_final[];
3562 extern struct pci_fixup __end_pci_fixups_final[];
3563 extern struct pci_fixup __start_pci_fixups_enable[];
3564 extern struct pci_fixup __end_pci_fixups_enable[];
3565 extern struct pci_fixup __start_pci_fixups_resume[];
3566 extern struct pci_fixup __end_pci_fixups_resume[];
3567 extern struct pci_fixup __start_pci_fixups_resume_early[];
3568 extern struct pci_fixup __end_pci_fixups_resume_early[];
3569 extern struct pci_fixup __start_pci_fixups_suspend[];
3570 extern struct pci_fixup __end_pci_fixups_suspend[];
3571 extern struct pci_fixup __start_pci_fixups_suspend_late[];
3572 extern struct pci_fixup __end_pci_fixups_suspend_late[];
3574 static bool pci_apply_fixup_final_quirks;
3576 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
3578 struct pci_fixup *start, *end;
3581 case pci_fixup_early:
3582 start = __start_pci_fixups_early;
3583 end = __end_pci_fixups_early;
3586 case pci_fixup_header:
3587 start = __start_pci_fixups_header;
3588 end = __end_pci_fixups_header;
3591 case pci_fixup_final:
3592 if (!pci_apply_fixup_final_quirks)
3594 start = __start_pci_fixups_final;
3595 end = __end_pci_fixups_final;
3598 case pci_fixup_enable:
3599 start = __start_pci_fixups_enable;
3600 end = __end_pci_fixups_enable;
3603 case pci_fixup_resume:
3604 start = __start_pci_fixups_resume;
3605 end = __end_pci_fixups_resume;
3608 case pci_fixup_resume_early:
3609 start = __start_pci_fixups_resume_early;
3610 end = __end_pci_fixups_resume_early;
3613 case pci_fixup_suspend:
3614 start = __start_pci_fixups_suspend;
3615 end = __end_pci_fixups_suspend;
3618 case pci_fixup_suspend_late:
3619 start = __start_pci_fixups_suspend_late;
3620 end = __end_pci_fixups_suspend_late;
3624 /* stupid compiler warning, you would think with an enum... */
3627 pci_do_fixups(dev, start, end);
3629 EXPORT_SYMBOL(pci_fixup_device);
3632 static int __init pci_apply_final_quirks(void)
3634 struct pci_dev *dev = NULL;
3638 if (pci_cache_line_size)
3639 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
3640 pci_cache_line_size << 2);
3642 pci_apply_fixup_final_quirks = true;
3643 for_each_pci_dev(dev) {
3644 pci_fixup_device(pci_fixup_final, dev);
3646 * If arch hasn't set it explicitly yet, use the CLS
3647 * value shared by all PCI devices. If there's a
3648 * mismatch, fall back to the default value.
3650 if (!pci_cache_line_size) {
3651 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
3654 if (!tmp || cls == tmp)
3657 printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), using %u bytes\n",
3659 pci_dfl_cache_line_size << 2);
3660 pci_cache_line_size = pci_dfl_cache_line_size;
3664 if (!pci_cache_line_size) {
3665 printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
3666 cls << 2, pci_dfl_cache_line_size << 2);
3667 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
3673 fs_initcall_sync(pci_apply_final_quirks);
3676 * Following are device-specific reset methods which can be used to
3677 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3680 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3683 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3685 * The 82599 supports FLR on VFs, but FLR support is reported only
3686 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3687 * Thus we must call pcie_flr() directly without first checking if it is
3695 #define SOUTH_CHICKEN2 0xc2004
3696 #define PCH_PP_STATUS 0xc7200
3697 #define PCH_PP_CONTROL 0xc7204
3698 #define MSG_CTL 0x45010
3699 #define NSDE_PWR_STATE 0xd0100
3700 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3702 static int reset_ivb_igd(struct pci_dev *dev, int probe)
3704 void __iomem *mmio_base;
3705 unsigned long timeout;
3711 mmio_base = pci_iomap(dev, 0, 0);
3715 iowrite32(0x00000002, mmio_base + MSG_CTL);
3718 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3719 * driver loaded sets the right bits. However, this's a reset and
3720 * the bits have been set by i915 previously, so we clobber
3721 * SOUTH_CHICKEN2 register directly here.
3723 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3725 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3726 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3728 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3730 val = ioread32(mmio_base + PCH_PP_STATUS);
3731 if ((val & 0xb0000000) == 0)
3732 goto reset_complete;
3734 } while (time_before(jiffies, timeout));
3735 dev_warn(&dev->dev, "timeout during reset\n");
3738 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3740 pci_iounmap(dev, mmio_base);
3745 * Device-specific reset method for Chelsio T4-based adapters.
3747 static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3753 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3754 * that we have no device-specific reset method.
3756 if ((dev->device & 0xf000) != 0x4000)
3760 * If this is the "probe" phase, return 0 indicating that we can
3761 * reset this device.
3767 * T4 can wedge if there are DMAs in flight within the chip and Bus
3768 * Master has been disabled. We need to have it on till the Function
3769 * Level Reset completes. (BUS_MASTER is disabled in
3770 * pci_reset_function()).
3772 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3773 pci_write_config_word(dev, PCI_COMMAND,
3774 old_command | PCI_COMMAND_MASTER);
3777 * Perform the actual device function reset, saving and restoring
3778 * configuration information around the reset.
3780 pci_save_state(dev);
3783 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3784 * are disabled when an MSI-X interrupt message needs to be delivered.
3785 * So we briefly re-enable MSI-X interrupts for the duration of the
3786 * FLR. The pci_restore_state() below will restore the original
3789 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3790 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3791 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3793 PCI_MSIX_FLAGS_ENABLE |
3794 PCI_MSIX_FLAGS_MASKALL);
3799 * Restore the configuration information (BAR values, etc.) including
3800 * the original PCI Configuration Space Command word, and return
3803 pci_restore_state(dev);
3804 pci_write_config_word(dev, PCI_COMMAND, old_command);
3808 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3809 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3810 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3812 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
3813 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
3814 reset_intel_82599_sfp_virtfn },
3815 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
3817 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
3819 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3820 reset_chelsio_generic_dev },
3825 * These device-specific reset methods are here rather than in a driver
3826 * because when a host assigns a device to a guest VM, the host may need
3827 * to reset the device but probably doesn't have a driver for it.
3829 int pci_dev_specific_reset(struct pci_dev *dev, int probe)
3831 const struct pci_dev_reset_methods *i;
3833 for (i = pci_dev_reset_methods; i->reset; i++) {
3834 if ((i->vendor == dev->vendor ||
3835 i->vendor == (u16)PCI_ANY_ID) &&
3836 (i->device == dev->device ||
3837 i->device == (u16)PCI_ANY_ID))
3838 return i->reset(dev, probe);
3844 static void quirk_dma_func0_alias(struct pci_dev *dev)
3846 if (PCI_FUNC(dev->devfn) != 0)
3847 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
3851 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3853 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
3855 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
3856 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
3858 static void quirk_dma_func1_alias(struct pci_dev *dev)
3860 if (PCI_FUNC(dev->devfn) != 1)
3861 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1));
3865 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
3866 * SKUs function 1 is present and is a legacy IDE controller, in other
3867 * SKUs this function is not present, making this a ghost requester.
3868 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
3870 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
3871 quirk_dma_func1_alias);
3872 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
3873 quirk_dma_func1_alias);
3874 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
3875 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
3876 quirk_dma_func1_alias);
3877 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
3878 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
3879 quirk_dma_func1_alias);
3880 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
3881 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
3882 quirk_dma_func1_alias);
3883 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
3884 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
3885 quirk_dma_func1_alias);
3886 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
3887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
3888 quirk_dma_func1_alias);
3889 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
3890 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
3891 quirk_dma_func1_alias);
3892 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
3893 quirk_dma_func1_alias);
3894 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
3895 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
3896 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
3897 quirk_dma_func1_alias);
3898 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
3899 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
3900 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
3901 quirk_dma_func1_alias);
3904 * Some devices DMA with the wrong devfn, not just the wrong function.
3905 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
3906 * the alias is "fixed" and independent of the device devfn.
3908 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
3909 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
3910 * single device on the secondary bus. In reality, the single exposed
3911 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
3912 * that provides a bridge to the internal bus of the I/O processor. The
3913 * controller supports private devices, which can be hidden from PCI config
3914 * space. In the case of the Adaptec 3405, a private device at 01.0
3915 * appears to be the DMA engine, which therefore needs to become a DMA
3916 * alias for the device.
3918 static const struct pci_device_id fixed_dma_alias_tbl[] = {
3919 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
3920 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
3921 .driver_data = PCI_DEVFN(1, 0) },
3922 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
3923 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
3924 .driver_data = PCI_DEVFN(1, 0) },
3928 static void quirk_fixed_dma_alias(struct pci_dev *dev)
3930 const struct pci_device_id *id;
3932 id = pci_match_id(fixed_dma_alias_tbl, dev);
3934 pci_add_dma_alias(dev, id->driver_data);
3937 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
3940 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
3941 * using the wrong DMA alias for the device. Some of these devices can be
3942 * used as either forward or reverse bridges, so we need to test whether the
3943 * device is operating in the correct mode. We could probably apply this
3944 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
3945 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
3946 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
3948 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
3950 if (!pci_is_root_bus(pdev->bus) &&
3951 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
3952 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
3953 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
3954 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
3956 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
3957 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
3958 quirk_use_pcie_bridge_dma_alias);
3959 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
3960 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
3961 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
3962 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
3963 /* ITE 8893 has the same problem as the 8892 */
3964 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
3965 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
3966 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
3969 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
3970 * be added as aliases to the DMA device in order to allow buffer access
3971 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
3972 * programmed in the EEPROM.
3974 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
3976 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0));
3977 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0));
3978 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3));
3980 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
3981 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
3984 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
3985 * associated not at the root bus, but at a bridge below. This quirk avoids
3986 * generating invalid DMA aliases.
3988 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
3990 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
3992 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
3993 quirk_bridge_cavm_thrx2_pcie_root);
3994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
3995 quirk_bridge_cavm_thrx2_pcie_root);
3998 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
3999 * class code. Fix it.
4001 static void quirk_tw686x_class(struct pci_dev *pdev)
4003 u32 class = pdev->class;
4005 /* Use "Multimedia controller" class */
4006 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4007 dev_info(&pdev->dev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4008 class, pdev->class);
4010 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4011 quirk_tw686x_class);
4012 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4013 quirk_tw686x_class);
4014 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4015 quirk_tw686x_class);
4016 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4017 quirk_tw686x_class);
4020 * Some devices have problems with Transaction Layer Packets with the Relaxed
4021 * Ordering Attribute set. Such devices should mark themselves and other
4022 * Device Drivers should check before sending TLPs with RO set.
4024 static void quirk_relaxedordering_disable(struct pci_dev *dev)
4026 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4027 dev_info(&dev->dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4031 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4032 * Complex has a Flow Control Credit issue which can cause performance
4033 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4035 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4036 quirk_relaxedordering_disable);
4037 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4038 quirk_relaxedordering_disable);
4039 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4040 quirk_relaxedordering_disable);
4041 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4042 quirk_relaxedordering_disable);
4043 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4044 quirk_relaxedordering_disable);
4045 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4046 quirk_relaxedordering_disable);
4047 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4048 quirk_relaxedordering_disable);
4049 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4050 quirk_relaxedordering_disable);
4051 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4052 quirk_relaxedordering_disable);
4053 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4054 quirk_relaxedordering_disable);
4055 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4056 quirk_relaxedordering_disable);
4057 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4058 quirk_relaxedordering_disable);
4059 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4060 quirk_relaxedordering_disable);
4061 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4062 quirk_relaxedordering_disable);
4063 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4064 quirk_relaxedordering_disable);
4065 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4066 quirk_relaxedordering_disable);
4067 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4068 quirk_relaxedordering_disable);
4069 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4070 quirk_relaxedordering_disable);
4071 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4072 quirk_relaxedordering_disable);
4073 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4074 quirk_relaxedordering_disable);
4075 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4076 quirk_relaxedordering_disable);
4077 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4078 quirk_relaxedordering_disable);
4079 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4080 quirk_relaxedordering_disable);
4081 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4082 quirk_relaxedordering_disable);
4083 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4084 quirk_relaxedordering_disable);
4085 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4086 quirk_relaxedordering_disable);
4087 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4088 quirk_relaxedordering_disable);
4089 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4090 quirk_relaxedordering_disable);
4093 * The AMD ARM A1100 (AKA "SEATTLE") SoC has a bug in its PCIe Root Complex
4094 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4095 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4096 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4097 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4098 * November 10, 2010). As a result, on this platform we can't use Relaxed
4099 * Ordering for Upstream TLPs.
4101 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4102 quirk_relaxedordering_disable);
4103 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4104 quirk_relaxedordering_disable);
4105 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4106 quirk_relaxedordering_disable);
4109 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4110 * values for the Attribute as were supplied in the header of the
4111 * corresponding Request, except as explicitly allowed when IDO is used."
4113 * If a non-compliant device generates a completion with a different
4114 * attribute than the request, the receiver may accept it (which itself
4115 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4116 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4117 * device access timeout.
4119 * If the non-compliant device generates completions with zero attributes
4120 * (instead of copying the attributes from the request), we can work around
4121 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4122 * upstream devices so they always generate requests with zero attributes.
4124 * This affects other devices under the same Root Port, but since these
4125 * attributes are performance hints, there should be no functional problem.
4127 * Note that Configuration Space accesses are never supposed to have TLP
4128 * Attributes, so we're safe waiting till after any Configuration Space
4129 * accesses to do the Root Port fixup.
4131 static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4133 struct pci_dev *root_port = pci_find_pcie_root_port(pdev);
4136 dev_warn(&pdev->dev, "PCIe Completion erratum may cause device errors\n");
4140 dev_info(&root_port->dev, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4141 dev_name(&pdev->dev));
4142 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4143 PCI_EXP_DEVCTL_RELAX_EN |
4144 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4148 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4149 * Completion it generates.
4151 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4154 * This mask/compare operation selects for Physical Function 4 on a
4155 * T5. We only need to fix up the Root Port once for any of the
4156 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4157 * 0x54xx so we use that one,
4159 if ((pdev->device & 0xff00) == 0x5400)
4160 quirk_disable_root_port_attributes(pdev);
4162 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4163 quirk_chelsio_T5_disable_root_port_attributes);
4166 * AMD has indicated that the devices below do not support peer-to-peer
4167 * in any system where they are found in the southbridge with an AMD
4168 * IOMMU in the system. Multifunction devices that do not support
4169 * peer-to-peer between functions can claim to support a subset of ACS.
4170 * Such devices effectively enable request redirect (RR) and completion
4171 * redirect (CR) since all transactions are redirected to the upstream
4174 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
4175 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
4176 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
4178 * 1002:4385 SBx00 SMBus Controller
4179 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4180 * 1002:4383 SBx00 Azalia (Intel HDA)
4181 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4182 * 1002:4384 SBx00 PCI to PCI Bridge
4183 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4185 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4187 * 1022:780f [AMD] FCH PCI Bridge
4188 * 1022:7809 [AMD] FCH USB OHCI Controller
4190 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4193 struct acpi_table_header *header = NULL;
4196 /* Targeting multifunction devices on the SB (appears on root bus) */
4197 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4200 /* The IVRS table describes the AMD IOMMU */
4201 status = acpi_get_table("IVRS", 0, &header);
4202 if (ACPI_FAILURE(status))
4205 /* Filter out flags not applicable to multifunction */
4206 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4208 return acs_flags & ~(PCI_ACS_RR | PCI_ACS_CR) ? 0 : 1;
4214 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4217 * Cavium devices matching this quirk do not perform peer-to-peer
4218 * with other functions, allowing masking out these bits as if they
4219 * were unimplemented in the ACS capability.
4221 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4222 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4224 if (!((dev->device >= 0xa000) && (dev->device <= 0xa0ff)))
4227 return acs_flags ? 0 : 1;
4230 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4233 * X-Gene root matching this quirk do not allow peer-to-peer
4234 * transactions with others, allowing masking out these bits as if they
4235 * were unimplemented in the ACS capability.
4237 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4239 return acs_flags ? 0 : 1;
4243 * Many Intel PCH root ports do provide ACS-like features to disable peer
4244 * transactions and validate bus numbers in requests, but do not provide an
4245 * actual PCIe ACS capability. This is the list of device IDs known to fall
4246 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4248 static const u16 pci_quirk_intel_pch_acs_ids[] = {
4250 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4251 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4252 /* Cougarpoint PCH */
4253 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4254 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4255 /* Pantherpoint PCH */
4256 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4257 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4258 /* Lynxpoint-H PCH */
4259 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4260 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4261 /* Lynxpoint-LP PCH */
4262 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4263 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4265 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4266 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4267 /* Patsburg (X79) PCH */
4268 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4269 /* Wellsburg (X99) PCH */
4270 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4271 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4272 /* Lynx Point (9 series) PCH */
4273 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4276 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4280 /* Filter out a few obvious non-matches first */
4281 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4284 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4285 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4291 #define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
4293 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4295 u16 flags = dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK ?
4296 INTEL_PCH_ACS_FLAGS : 0;
4298 if (!pci_quirk_intel_pch_acs_match(dev))
4301 return acs_flags & ~flags ? 0 : 1;
4305 * These QCOM root ports do provide ACS-like features to disable peer
4306 * transactions and validate bus numbers in requests, but do not provide an
4307 * actual PCIe ACS capability. Hardware supports source validation but it
4308 * will report the issue as Completer Abort instead of ACS Violation.
4309 * Hardware doesn't support peer-to-peer and each root port is a root
4310 * complex with unique segment numbers. It is not possible for one root
4311 * port to pass traffic to another root port. All PCIe transactions are
4312 * terminated inside the root port.
4314 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4316 u16 flags = (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV);
4317 int ret = acs_flags & ~flags ? 0 : 1;
4319 dev_info(&dev->dev, "Using QCOM ACS Quirk (%d)\n", ret);
4325 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4326 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4327 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4328 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4329 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4330 * control register is at offset 8 instead of 6 and we should probably use
4331 * dword accesses to them. This applies to the following PCI Device IDs, as
4332 * found in volume 1 of the datasheet[2]:
4334 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4335 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4337 * N.B. This doesn't fix what lspci shows.
4339 * The 100 series chipset specification update includes this as errata #23[3].
4341 * The 200 series chipset (Union Point) has the same bug according to the
4342 * specification update (Intel 200 Series Chipset Family Platform Controller
4343 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4344 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4347 * 0xa290-0xa29f PCI Express Root port #{0-16}
4348 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4350 * [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4351 * [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4352 * [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4353 * [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4354 * [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4356 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4358 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4361 switch (dev->device) {
4362 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4363 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4370 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4372 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4377 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4380 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4384 /* see pci_acs_flags_enabled() */
4385 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4386 acs_flags &= (cap | PCI_ACS_EC);
4388 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4390 return acs_flags & ~ctrl ? 0 : 1;
4393 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4396 * SV, TB, and UF are not relevant to multifunction endpoints.
4398 * Multifunction devices are only required to implement RR, CR, and DT
4399 * in their ACS capability if they support peer-to-peer transactions.
4400 * Devices matching this quirk have been verified by the vendor to not
4401 * perform peer-to-peer with other functions, allowing us to mask out
4402 * these bits as if they were unimplemented in the ACS capability.
4404 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4405 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4407 return acs_flags ? 0 : 1;
4410 static const struct pci_dev_acs_enabled {
4413 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4414 } pci_dev_acs_enabled[] = {
4415 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4416 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4417 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4418 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4419 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4420 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4421 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4422 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4423 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4424 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4425 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4426 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4427 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4428 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4429 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4430 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4431 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4432 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4433 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4434 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4435 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4436 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4437 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4438 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4439 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4440 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4441 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4442 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4443 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4444 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4445 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4447 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4448 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4449 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4450 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4451 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4452 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4453 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4455 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4456 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4457 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4458 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4459 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4460 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4461 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4462 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4464 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4465 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4466 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4468 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4469 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4470 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4471 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4472 /* 82571 (Quads omitted due to non-ACS switch) */
4473 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4474 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4475 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4476 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4478 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4479 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4480 /* QCOM QDF2xxx root ports */
4481 { 0x17cb, 0x400, pci_quirk_qcom_rp_acs },
4482 { 0x17cb, 0x401, pci_quirk_qcom_rp_acs },
4483 /* Intel PCH root ports */
4484 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4485 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4486 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4487 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4488 /* Cavium ThunderX */
4489 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4491 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4495 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4497 const struct pci_dev_acs_enabled *i;
4501 * Allow devices that do not expose standard PCIe ACS capabilities
4502 * or control to indicate their support here. Multi-function express
4503 * devices which do not allow internal peer-to-peer between functions,
4504 * but do not implement PCIe ACS may wish to return true here.
4506 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4507 if ((i->vendor == dev->vendor ||
4508 i->vendor == (u16)PCI_ANY_ID) &&
4509 (i->device == dev->device ||
4510 i->device == (u16)PCI_ANY_ID)) {
4511 ret = i->acs_enabled(dev, acs_flags);
4520 /* Config space offset of Root Complex Base Address register */
4521 #define INTEL_LPC_RCBA_REG 0xf0
4522 /* 31:14 RCBA address */
4523 #define INTEL_LPC_RCBA_MASK 0xffffc000
4525 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
4527 /* Backbone Scratch Pad Register */
4528 #define INTEL_BSPR_REG 0x1104
4529 /* Backbone Peer Non-Posted Disable */
4530 #define INTEL_BSPR_REG_BPNPD (1 << 8)
4531 /* Backbone Peer Posted Disable */
4532 #define INTEL_BSPR_REG_BPPD (1 << 9)
4534 /* Upstream Peer Decode Configuration Register */
4535 #define INTEL_UPDCR_REG 0x1114
4536 /* 5:0 Peer Decode Enable bits */
4537 #define INTEL_UPDCR_REG_MASK 0x3f
4539 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
4541 u32 rcba, bspr, updcr;
4542 void __iomem *rcba_mem;
4545 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4546 * are D28:F* and therefore get probed before LPC, thus we can't
4547 * use pci_get_slot/pci_read_config_dword here.
4549 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
4550 INTEL_LPC_RCBA_REG, &rcba);
4551 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
4554 rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
4555 PAGE_ALIGN(INTEL_UPDCR_REG));
4560 * The BSPR can disallow peer cycles, but it's set by soft strap and
4561 * therefore read-only. If both posted and non-posted peer cycles are
4562 * disallowed, we're ok. If either are allowed, then we need to use
4563 * the UPDCR to disable peer decodes for each port. This provides the
4564 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
4566 bspr = readl(rcba_mem + INTEL_BSPR_REG);
4567 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
4568 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
4569 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
4570 if (updcr & INTEL_UPDCR_REG_MASK) {
4571 dev_info(&dev->dev, "Disabling UPDCR peer decodes\n");
4572 updcr &= ~INTEL_UPDCR_REG_MASK;
4573 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
4581 /* Miscellaneous Port Configuration register */
4582 #define INTEL_MPC_REG 0xd8
4583 /* MPC: Invalid Receive Bus Number Check Enable */
4584 #define INTEL_MPC_REG_IRBNCE (1 << 26)
4586 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
4591 * When enabled, the IRBNCE bit of the MPC register enables the
4592 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
4593 * ensures that requester IDs fall within the bus number range
4594 * of the bridge. Enable if not already.
4596 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
4597 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
4598 dev_info(&dev->dev, "Enabling MPC IRBNCE\n");
4599 mpc |= INTEL_MPC_REG_IRBNCE;
4600 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
4604 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
4606 if (!pci_quirk_intel_pch_acs_match(dev))
4609 if (pci_quirk_enable_intel_lpc_acs(dev)) {
4610 dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n");
4614 pci_quirk_enable_intel_rp_mpc_acs(dev);
4616 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
4618 dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n");
4623 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
4628 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4631 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4635 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4636 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4638 ctrl |= (cap & PCI_ACS_SV);
4639 ctrl |= (cap & PCI_ACS_RR);
4640 ctrl |= (cap & PCI_ACS_CR);
4641 ctrl |= (cap & PCI_ACS_UF);
4643 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
4645 dev_info(&dev->dev, "Intel SPT PCH root port ACS workaround enabled\n");
4650 static const struct pci_dev_enable_acs {
4653 int (*enable_acs)(struct pci_dev *dev);
4654 } pci_dev_enable_acs[] = {
4655 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_pch_acs },
4656 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_enable_intel_spt_pch_acs },
4660 int pci_dev_specific_enable_acs(struct pci_dev *dev)
4662 const struct pci_dev_enable_acs *i;
4665 for (i = pci_dev_enable_acs; i->enable_acs; i++) {
4666 if ((i->vendor == dev->vendor ||
4667 i->vendor == (u16)PCI_ANY_ID) &&
4668 (i->device == dev->device ||
4669 i->device == (u16)PCI_ANY_ID)) {
4670 ret = i->enable_acs(dev);
4680 * The PCI capabilities list for Intel DH895xCC VFs (device id 0x0443) with
4681 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
4682 * Next Capability pointer in the MSI Capability Structure should point to
4683 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
4686 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
4691 struct pci_cap_saved_state *state;
4693 /* Bail if the hardware bug is fixed */
4694 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
4697 /* Bail if MSI Capability Structure is not found for some reason */
4698 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
4703 * Bail if Next Capability pointer in the MSI Capability Structure
4704 * is not the expected incorrect 0x00.
4706 pci_read_config_byte(pdev, pos + 1, &next_cap);
4711 * PCIe Capability Structure is expected to be at 0x50 and should
4712 * terminate the list (Next Capability pointer is 0x00). Verify
4713 * Capability Id and Next Capability pointer is as expected.
4714 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
4715 * to correctly set kernel data structures which have already been
4716 * set incorrectly due to the hardware bug.
4719 pci_read_config_word(pdev, pos, ®16);
4720 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
4722 #ifndef PCI_EXP_SAVE_REGS
4723 #define PCI_EXP_SAVE_REGS 7
4725 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
4727 pdev->pcie_cap = pos;
4728 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
4729 pdev->pcie_flags_reg = reg16;
4730 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
4731 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
4733 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
4734 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
4735 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
4736 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
4738 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
4744 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
4748 state->cap.cap_nr = PCI_CAP_ID_EXP;
4749 state->cap.cap_extended = 0;
4750 state->cap.size = size;
4751 cap = (u16 *)&state->cap.data[0];
4752 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
4753 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
4754 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
4755 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
4756 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
4757 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
4758 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
4759 hlist_add_head(&state->next, &pdev->saved_cap_space);
4762 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
4764 /* FLR may cause some 82579 devices to hang. */
4765 static void quirk_intel_no_flr(struct pci_dev *dev)
4767 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
4769 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_intel_no_flr);
4770 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_intel_no_flr);
4772 static void quirk_no_ext_tags(struct pci_dev *pdev)
4774 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
4779 bridge->no_ext_tags = 1;
4780 dev_info(&pdev->dev, "disabling Extended Tags (this device can't handle them)\n");
4782 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
4784 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
4785 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
4786 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
4788 #ifdef CONFIG_PCI_ATS
4790 * Some devices have a broken ATS implementation causing IOMMU stalls.
4791 * Don't use ATS for those devices.
4793 static void quirk_no_ats(struct pci_dev *pdev)
4795 dev_info(&pdev->dev, "disabling ATS (broken on this device)\n");
4799 /* AMD Stoney platform GPU */
4800 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats);
4801 #endif /* CONFIG_PCI_ATS */