1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains work-arounds for many known PCI hardware
4 * bugs. Devices present only on certain architectures (host
5 * bridges et cetera) should be handled in arch-specific code.
7 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
9 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
11 * Init/reset quirks for USB host controllers should be in the
12 * USB quirks file, where their drivers can access reuse it.
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/export.h>
18 #include <linux/pci.h>
19 #include <linux/init.h>
20 #include <linux/delay.h>
21 #include <linux/acpi.h>
22 #include <linux/kallsyms.h>
23 #include <linux/dmi.h>
24 #include <linux/pci-aspm.h>
25 #include <linux/ioport.h>
26 #include <linux/sched.h>
27 #include <linux/ktime.h>
29 #include <linux/platform_data/x86/apple.h>
30 #include <asm/dma.h> /* isa_dma_bridge_buggy */
34 * Decoding should be disabled for a PCI device during BAR sizing to avoid
35 * conflict. But doing so may cause problems on host bridge and perhaps other
36 * key system devices. For devices that need to have mmio decoding always-on,
37 * we need to set the dev->mmio_always_on bit.
39 static void quirk_mmio_always_on(struct pci_dev
*dev
)
41 dev
->mmio_always_on
= 1;
43 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID
, PCI_ANY_ID
,
44 PCI_CLASS_BRIDGE_HOST
, 8, quirk_mmio_always_on
);
46 /* The BAR0 ~ BAR4 of Marvell 9125 device can't be accessed
47 * by IO resource file, and need to skip the files
49 static void quirk_marvell_mask_bar(struct pci_dev
*dev
)
53 for (i
= 0; i
< 5; i
++)
54 if (dev
->resource
[i
].start
)
55 dev
->resource
[i
].start
=
56 dev
->resource
[i
].end
= 0;
58 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9125,
59 quirk_marvell_mask_bar
);
61 /* The Mellanox Tavor device gives false positive parity errors
62 * Mark this device with a broken_parity_status, to allow
63 * PCI scanning code to "skip" this now blacklisted device.
65 static void quirk_mellanox_tavor(struct pci_dev
*dev
)
67 dev
->broken_parity_status
= 1; /* This device gives false positives */
69 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX
, PCI_DEVICE_ID_MELLANOX_TAVOR
, quirk_mellanox_tavor
);
70 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX
, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE
, quirk_mellanox_tavor
);
72 /* Deal with broken BIOSes that neglect to enable passive release,
73 which can cause problems in combination with the 82441FX/PPro MTRRs */
74 static void quirk_passive_release(struct pci_dev
*dev
)
76 struct pci_dev
*d
= NULL
;
79 /* We have to make sure a particular bit is set in the PIIX3
80 ISA bridge, so we have to go out and find it. */
81 while ((d
= pci_get_device(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82371SB_0
, d
))) {
82 pci_read_config_byte(d
, 0x82, &dlc
);
84 dev_info(&d
->dev
, "PIIX3: Enabling Passive Release\n");
86 pci_write_config_byte(d
, 0x82, dlc
);
90 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82441
, quirk_passive_release
);
91 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82441
, quirk_passive_release
);
93 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
94 but VIA don't answer queries. If you happen to have good contacts at VIA
95 ask them for me please -- Alan
97 This appears to be BIOS not version dependent. So presumably there is a
100 static void quirk_isa_dma_hangs(struct pci_dev
*dev
)
102 if (!isa_dma_bridge_buggy
) {
103 isa_dma_bridge_buggy
= 1;
104 dev_info(&dev
->dev
, "Activating ISA DMA hang workarounds\n");
108 * Its not totally clear which chipsets are the problematic ones
109 * We know 82C586 and 82C596 variants are affected.
111 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C586_0
, quirk_isa_dma_hangs
);
112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C596
, quirk_isa_dma_hangs
);
113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82371SB_0
, quirk_isa_dma_hangs
);
114 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL
, PCI_DEVICE_ID_AL_M1533
, quirk_isa_dma_hangs
);
115 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC
, PCI_DEVICE_ID_NEC_CBUS_1
, quirk_isa_dma_hangs
);
116 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC
, PCI_DEVICE_ID_NEC_CBUS_2
, quirk_isa_dma_hangs
);
117 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC
, PCI_DEVICE_ID_NEC_CBUS_3
, quirk_isa_dma_hangs
);
120 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
121 * for some HT machines to use C4 w/o hanging.
123 static void quirk_tigerpoint_bm_sts(struct pci_dev
*dev
)
128 pci_read_config_dword(dev
, 0x40, &pmbase
);
129 pmbase
= pmbase
& 0xff80;
133 dev_info(&dev
->dev
, FW_BUG
"TigerPoint LPC.BM_STS cleared\n");
137 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_TGP_LPC
, quirk_tigerpoint_bm_sts
);
140 * Chipsets where PCI->PCI transfers vanish or hang
142 static void quirk_nopcipci(struct pci_dev
*dev
)
144 if ((pci_pci_problems
& PCIPCI_FAIL
) == 0) {
145 dev_info(&dev
->dev
, "Disabling direct PCI/PCI transfers\n");
146 pci_pci_problems
|= PCIPCI_FAIL
;
149 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_5597
, quirk_nopcipci
);
150 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_496
, quirk_nopcipci
);
152 static void quirk_nopciamd(struct pci_dev
*dev
)
155 pci_read_config_byte(dev
, 0x08, &rev
);
158 dev_info(&dev
->dev
, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
159 pci_pci_problems
|= PCIAGP_FAIL
;
162 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8151_0
, quirk_nopciamd
);
165 * Triton requires workarounds to be used by the drivers
167 static void quirk_triton(struct pci_dev
*dev
)
169 if ((pci_pci_problems
&PCIPCI_TRITON
) == 0) {
170 dev_info(&dev
->dev
, "Limiting direct PCI/PCI transfers\n");
171 pci_pci_problems
|= PCIPCI_TRITON
;
174 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82437
, quirk_triton
);
175 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82437VX
, quirk_triton
);
176 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82439
, quirk_triton
);
177 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82439TX
, quirk_triton
);
180 * VIA Apollo KT133 needs PCI latency patch
181 * Made according to a windows driver based patch by George E. Breese
182 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
183 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
184 * the info on which Mr Breese based his work.
186 * Updated based on further information from the site and also on
187 * information provided by VIA
189 static void quirk_vialatency(struct pci_dev
*dev
)
193 /* Ok we have a potential problem chipset here. Now see if we have
194 a buggy southbridge */
196 p
= pci_get_device(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686
, NULL
);
198 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
199 /* Check for buggy part revisions */
200 if (p
->revision
< 0x40 || p
->revision
> 0x42)
203 p
= pci_get_device(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8231
, NULL
);
204 if (p
== NULL
) /* No problem parts */
206 /* Check for buggy part revisions */
207 if (p
->revision
< 0x10 || p
->revision
> 0x12)
212 * Ok we have the problem. Now set the PCI master grant to
213 * occur every master grant. The apparent bug is that under high
214 * PCI load (quite common in Linux of course) you can get data
215 * loss when the CPU is held off the bus for 3 bus master requests
216 * This happens to include the IDE controllers....
218 * VIA only apply this fix when an SB Live! is present but under
219 * both Linux and Windows this isn't enough, and we have seen
220 * corruption without SB Live! but with things like 3 UDMA IDE
221 * controllers. So we ignore that bit of the VIA recommendation..
224 pci_read_config_byte(dev
, 0x76, &busarb
);
225 /* Set bit 4 and bi 5 of byte 76 to 0x01
226 "Master priority rotation on every PCI master grant */
229 pci_write_config_byte(dev
, 0x76, busarb
);
230 dev_info(&dev
->dev
, "Applying VIA southbridge workaround\n");
234 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8363_0
, quirk_vialatency
);
235 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8371_1
, quirk_vialatency
);
236 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8361
, quirk_vialatency
);
237 /* Must restore this on a resume from RAM */
238 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8363_0
, quirk_vialatency
);
239 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8371_1
, quirk_vialatency
);
240 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8361
, quirk_vialatency
);
243 * VIA Apollo VP3 needs ETBF on BT848/878
245 static void quirk_viaetbf(struct pci_dev
*dev
)
247 if ((pci_pci_problems
&PCIPCI_VIAETBF
) == 0) {
248 dev_info(&dev
->dev
, "Limiting direct PCI/PCI transfers\n");
249 pci_pci_problems
|= PCIPCI_VIAETBF
;
252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C597_0
, quirk_viaetbf
);
254 static void quirk_vsfx(struct pci_dev
*dev
)
256 if ((pci_pci_problems
&PCIPCI_VSFX
) == 0) {
257 dev_info(&dev
->dev
, "Limiting direct PCI/PCI transfers\n");
258 pci_pci_problems
|= PCIPCI_VSFX
;
261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C576
, quirk_vsfx
);
264 * Ali Magik requires workarounds to be used by the drivers
265 * that DMA to AGP space. Latency must be set to 0xA and triton
266 * workaround applied too
267 * [Info kindly provided by ALi]
269 static void quirk_alimagik(struct pci_dev
*dev
)
271 if ((pci_pci_problems
&PCIPCI_ALIMAGIK
) == 0) {
272 dev_info(&dev
->dev
, "Limiting direct PCI/PCI transfers\n");
273 pci_pci_problems
|= PCIPCI_ALIMAGIK
|PCIPCI_TRITON
;
276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL
, PCI_DEVICE_ID_AL_M1647
, quirk_alimagik
);
277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL
, PCI_DEVICE_ID_AL_M1651
, quirk_alimagik
);
280 * Natoma has some interesting boundary conditions with Zoran stuff
283 static void quirk_natoma(struct pci_dev
*dev
)
285 if ((pci_pci_problems
&PCIPCI_NATOMA
) == 0) {
286 dev_info(&dev
->dev
, "Limiting direct PCI/PCI transfers\n");
287 pci_pci_problems
|= PCIPCI_NATOMA
;
290 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82441
, quirk_natoma
);
291 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443LX_0
, quirk_natoma
);
292 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443LX_1
, quirk_natoma
);
293 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443BX_0
, quirk_natoma
);
294 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443BX_1
, quirk_natoma
);
295 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443BX_2
, quirk_natoma
);
298 * This chip can cause PCI parity errors if config register 0xA0 is read
299 * while DMAs are occurring.
301 static void quirk_citrine(struct pci_dev
*dev
)
303 dev
->cfg_size
= 0xA0;
305 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_CITRINE
, quirk_citrine
);
308 * This chip can cause bus lockups if config addresses above 0x600
309 * are read or written.
311 static void quirk_nfp6000(struct pci_dev
*dev
)
313 dev
->cfg_size
= 0x600;
315 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME
, PCI_DEVICE_ID_NETRONOME_NFP4000
, quirk_nfp6000
);
316 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME
, PCI_DEVICE_ID_NETRONOME_NFP6000
, quirk_nfp6000
);
317 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME
, PCI_DEVICE_ID_NETRONOME_NFP6000_VF
, quirk_nfp6000
);
319 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
320 static void quirk_extend_bar_to_page(struct pci_dev
*dev
)
324 for (i
= 0; i
<= PCI_STD_RESOURCE_END
; i
++) {
325 struct resource
*r
= &dev
->resource
[i
];
327 if (r
->flags
& IORESOURCE_MEM
&& resource_size(r
) < PAGE_SIZE
) {
328 r
->end
= PAGE_SIZE
- 1;
330 r
->flags
|= IORESOURCE_UNSET
;
331 dev_info(&dev
->dev
, "expanded BAR %d to page size: %pR\n",
336 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM
, 0x034a, quirk_extend_bar_to_page
);
339 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
340 * If it's needed, re-allocate the region.
342 static void quirk_s3_64M(struct pci_dev
*dev
)
344 struct resource
*r
= &dev
->resource
[0];
346 if ((r
->start
& 0x3ffffff) || r
->end
!= r
->start
+ 0x3ffffff) {
347 r
->flags
|= IORESOURCE_UNSET
;
352 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3
, PCI_DEVICE_ID_S3_868
, quirk_s3_64M
);
353 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3
, PCI_DEVICE_ID_S3_968
, quirk_s3_64M
);
355 static void quirk_io(struct pci_dev
*dev
, int pos
, unsigned size
,
359 struct pci_bus_region bus_region
;
360 struct resource
*res
= dev
->resource
+ pos
;
362 pci_read_config_dword(dev
, PCI_BASE_ADDRESS_0
+ (pos
<< 2), ®ion
);
367 res
->name
= pci_name(dev
);
368 res
->flags
= region
& ~PCI_BASE_ADDRESS_IO_MASK
;
370 (IORESOURCE_IO
| IORESOURCE_PCI_FIXED
| IORESOURCE_SIZEALIGN
);
371 region
&= ~(size
- 1);
373 /* Convert from PCI bus to resource space */
374 bus_region
.start
= region
;
375 bus_region
.end
= region
+ size
- 1;
376 pcibios_bus_to_resource(dev
->bus
, res
, &bus_region
);
378 dev_info(&dev
->dev
, FW_BUG
"%s quirk: reg 0x%x: %pR\n",
379 name
, PCI_BASE_ADDRESS_0
+ (pos
<< 2), res
);
383 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
384 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
385 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
386 * (which conflicts w/ BAR1's memory range).
388 * CS553x's ISA PCI BARs may also be read-only (ref:
389 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
391 static void quirk_cs5536_vsa(struct pci_dev
*dev
)
393 static char *name
= "CS5536 ISA bridge";
395 if (pci_resource_len(dev
, 0) != 8) {
396 quirk_io(dev
, 0, 8, name
); /* SMB */
397 quirk_io(dev
, 1, 256, name
); /* GPIO */
398 quirk_io(dev
, 2, 64, name
); /* MFGPT */
399 dev_info(&dev
->dev
, "%s bug detected (incorrect header); workaround applied\n",
403 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_CS5536_ISA
, quirk_cs5536_vsa
);
405 static void quirk_io_region(struct pci_dev
*dev
, int port
,
406 unsigned size
, int nr
, const char *name
)
409 struct pci_bus_region bus_region
;
410 struct resource
*res
= dev
->resource
+ nr
;
412 pci_read_config_word(dev
, port
, ®ion
);
413 region
&= ~(size
- 1);
418 res
->name
= pci_name(dev
);
419 res
->flags
= IORESOURCE_IO
;
421 /* Convert from PCI bus to resource space */
422 bus_region
.start
= region
;
423 bus_region
.end
= region
+ size
- 1;
424 pcibios_bus_to_resource(dev
->bus
, res
, &bus_region
);
426 if (!pci_claim_resource(dev
, nr
))
427 dev_info(&dev
->dev
, "quirk: %pR claimed by %s\n", res
, name
);
431 * ATI Northbridge setups MCE the processor if you even
432 * read somewhere between 0x3b0->0x3bb or read 0x3d3
434 static void quirk_ati_exploding_mce(struct pci_dev
*dev
)
436 dev_info(&dev
->dev
, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
437 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
438 request_region(0x3b0, 0x0C, "RadeonIGP");
439 request_region(0x3d3, 0x01, "RadeonIGP");
441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_RS100
, quirk_ati_exploding_mce
);
444 * In the AMD NL platform, this device ([1022:7912]) has a class code of
445 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
447 * But the dwc3 driver is a more specific driver for this device, and we'd
448 * prefer to use it instead of xhci. To prevent xhci from claiming the
449 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
450 * defines as "USB device (not host controller)". The dwc3 driver can then
451 * claim it based on its Vendor and Device ID.
453 static void quirk_amd_nl_class(struct pci_dev
*pdev
)
455 u32
class = pdev
->class;
457 /* Use "USB Device (not host controller)" class */
458 pdev
->class = PCI_CLASS_SERIAL_USB_DEVICE
;
459 dev_info(&pdev
->dev
, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
462 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_NL_USB
,
466 * Let's make the southbridge information explicit instead
467 * of having to worry about people probing the ACPI areas,
468 * for example.. (Yes, it happens, and if you read the wrong
469 * ACPI register it will put the machine to sleep with no
470 * way of waking it up again. Bummer).
472 * ALI M7101: Two IO regions pointed to by words at
473 * 0xE0 (64 bytes of ACPI registers)
474 * 0xE2 (32 bytes of SMB registers)
476 static void quirk_ali7101_acpi(struct pci_dev
*dev
)
478 quirk_io_region(dev
, 0xE0, 64, PCI_BRIDGE_RESOURCES
, "ali7101 ACPI");
479 quirk_io_region(dev
, 0xE2, 32, PCI_BRIDGE_RESOURCES
+1, "ali7101 SMB");
481 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL
, PCI_DEVICE_ID_AL_M7101
, quirk_ali7101_acpi
);
483 static void piix4_io_quirk(struct pci_dev
*dev
, const char *name
, unsigned int port
, unsigned int enable
)
486 u32 mask
, size
, base
;
488 pci_read_config_dword(dev
, port
, &devres
);
489 if ((devres
& enable
) != enable
)
491 mask
= (devres
>> 16) & 15;
492 base
= devres
& 0xffff;
495 unsigned bit
= size
>> 1;
496 if ((bit
& mask
) == bit
)
501 * For now we only print it out. Eventually we'll want to
502 * reserve it (at least if it's in the 0x1000+ range), but
503 * let's get enough confirmation reports first.
506 dev_info(&dev
->dev
, "%s PIO at %04x-%04x\n", name
, base
,
510 static void piix4_mem_quirk(struct pci_dev
*dev
, const char *name
, unsigned int port
, unsigned int enable
)
513 u32 mask
, size
, base
;
515 pci_read_config_dword(dev
, port
, &devres
);
516 if ((devres
& enable
) != enable
)
518 base
= devres
& 0xffff0000;
519 mask
= (devres
& 0x3f) << 16;
522 unsigned bit
= size
>> 1;
523 if ((bit
& mask
) == bit
)
528 * For now we only print it out. Eventually we'll want to
529 * reserve it, but let's get enough confirmation reports first.
532 dev_info(&dev
->dev
, "%s MMIO at %04x-%04x\n", name
, base
,
537 * PIIX4 ACPI: Two IO regions pointed to by longwords at
538 * 0x40 (64 bytes of ACPI registers)
539 * 0x90 (16 bytes of SMB registers)
540 * and a few strange programmable PIIX4 device resources.
542 static void quirk_piix4_acpi(struct pci_dev
*dev
)
546 quirk_io_region(dev
, 0x40, 64, PCI_BRIDGE_RESOURCES
, "PIIX4 ACPI");
547 quirk_io_region(dev
, 0x90, 16, PCI_BRIDGE_RESOURCES
+1, "PIIX4 SMB");
549 /* Device resource A has enables for some of the other ones */
550 pci_read_config_dword(dev
, 0x5c, &res_a
);
552 piix4_io_quirk(dev
, "PIIX4 devres B", 0x60, 3 << 21);
553 piix4_io_quirk(dev
, "PIIX4 devres C", 0x64, 3 << 21);
555 /* Device resource D is just bitfields for static resources */
557 /* Device 12 enabled? */
558 if (res_a
& (1 << 29)) {
559 piix4_io_quirk(dev
, "PIIX4 devres E", 0x68, 1 << 20);
560 piix4_mem_quirk(dev
, "PIIX4 devres F", 0x6c, 1 << 7);
562 /* Device 13 enabled? */
563 if (res_a
& (1 << 30)) {
564 piix4_io_quirk(dev
, "PIIX4 devres G", 0x70, 1 << 20);
565 piix4_mem_quirk(dev
, "PIIX4 devres H", 0x74, 1 << 7);
567 piix4_io_quirk(dev
, "PIIX4 devres I", 0x78, 1 << 20);
568 piix4_io_quirk(dev
, "PIIX4 devres J", 0x7c, 1 << 20);
570 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82371AB_3
, quirk_piix4_acpi
);
571 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82443MX_3
, quirk_piix4_acpi
);
573 #define ICH_PMBASE 0x40
574 #define ICH_ACPI_CNTL 0x44
575 #define ICH4_ACPI_EN 0x10
576 #define ICH6_ACPI_EN 0x80
577 #define ICH4_GPIOBASE 0x58
578 #define ICH4_GPIO_CNTL 0x5c
579 #define ICH4_GPIO_EN 0x10
580 #define ICH6_GPIOBASE 0x48
581 #define ICH6_GPIO_CNTL 0x4c
582 #define ICH6_GPIO_EN 0x10
585 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
586 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
587 * 0x58 (64 bytes of GPIO I/O space)
589 static void quirk_ich4_lpc_acpi(struct pci_dev
*dev
)
594 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
595 * with low legacy (and fixed) ports. We don't know the decoding
596 * priority and can't tell whether the legacy device or the one created
597 * here is really at that address. This happens on boards with broken
601 pci_read_config_byte(dev
, ICH_ACPI_CNTL
, &enable
);
602 if (enable
& ICH4_ACPI_EN
)
603 quirk_io_region(dev
, ICH_PMBASE
, 128, PCI_BRIDGE_RESOURCES
,
604 "ICH4 ACPI/GPIO/TCO");
606 pci_read_config_byte(dev
, ICH4_GPIO_CNTL
, &enable
);
607 if (enable
& ICH4_GPIO_EN
)
608 quirk_io_region(dev
, ICH4_GPIOBASE
, 64, PCI_BRIDGE_RESOURCES
+1,
611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801AA_0
, quirk_ich4_lpc_acpi
);
612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801AB_0
, quirk_ich4_lpc_acpi
);
613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801BA_0
, quirk_ich4_lpc_acpi
);
614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801BA_10
, quirk_ich4_lpc_acpi
);
615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_0
, quirk_ich4_lpc_acpi
);
616 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_12
, quirk_ich4_lpc_acpi
);
617 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_0
, quirk_ich4_lpc_acpi
);
618 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_12
, quirk_ich4_lpc_acpi
);
619 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801EB_0
, quirk_ich4_lpc_acpi
);
620 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ESB_1
, quirk_ich4_lpc_acpi
);
622 static void ich6_lpc_acpi_gpio(struct pci_dev
*dev
)
626 pci_read_config_byte(dev
, ICH_ACPI_CNTL
, &enable
);
627 if (enable
& ICH6_ACPI_EN
)
628 quirk_io_region(dev
, ICH_PMBASE
, 128, PCI_BRIDGE_RESOURCES
,
629 "ICH6 ACPI/GPIO/TCO");
631 pci_read_config_byte(dev
, ICH6_GPIO_CNTL
, &enable
);
632 if (enable
& ICH6_GPIO_EN
)
633 quirk_io_region(dev
, ICH6_GPIOBASE
, 64, PCI_BRIDGE_RESOURCES
+1,
637 static void ich6_lpc_generic_decode(struct pci_dev
*dev
, unsigned reg
, const char *name
, int dynsize
)
642 pci_read_config_dword(dev
, reg
, &val
);
650 * This is not correct. It is 16, 32 or 64 bytes depending on
651 * register D31:F0:ADh bits 5:4.
653 * But this gets us at least _part_ of it.
661 /* Just print it out for now. We should reserve it after more debugging */
662 dev_info(&dev
->dev
, "%s PIO at %04x-%04x\n", name
, base
, base
+size
-1);
665 static void quirk_ich6_lpc(struct pci_dev
*dev
)
667 /* Shared ACPI/GPIO decode with all ICH6+ */
668 ich6_lpc_acpi_gpio(dev
);
670 /* ICH6-specific generic IO decode */
671 ich6_lpc_generic_decode(dev
, 0x84, "LPC Generic IO decode 1", 0);
672 ich6_lpc_generic_decode(dev
, 0x88, "LPC Generic IO decode 2", 1);
674 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_0
, quirk_ich6_lpc
);
675 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_1
, quirk_ich6_lpc
);
677 static void ich7_lpc_generic_decode(struct pci_dev
*dev
, unsigned reg
, const char *name
)
682 pci_read_config_dword(dev
, reg
, &val
);
689 * IO base in bits 15:2, mask in bits 23:18, both
693 mask
= (val
>> 16) & 0xfc;
696 /* Just print it out for now. We should reserve it after more debugging */
697 dev_info(&dev
->dev
, "%s PIO at %04x (mask %04x)\n", name
, base
, mask
);
700 /* ICH7-10 has the same common LPC generic IO decode registers */
701 static void quirk_ich7_lpc(struct pci_dev
*dev
)
703 /* We share the common ACPI/GPIO decode with ICH6 */
704 ich6_lpc_acpi_gpio(dev
);
706 /* And have 4 ICH7+ generic decodes */
707 ich7_lpc_generic_decode(dev
, 0x84, "ICH7 LPC Generic IO decode 1");
708 ich7_lpc_generic_decode(dev
, 0x88, "ICH7 LPC Generic IO decode 2");
709 ich7_lpc_generic_decode(dev
, 0x8c, "ICH7 LPC Generic IO decode 3");
710 ich7_lpc_generic_decode(dev
, 0x90, "ICH7 LPC Generic IO decode 4");
712 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH7_0
, quirk_ich7_lpc
);
713 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH7_1
, quirk_ich7_lpc
);
714 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH7_31
, quirk_ich7_lpc
);
715 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH8_0
, quirk_ich7_lpc
);
716 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH8_2
, quirk_ich7_lpc
);
717 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH8_3
, quirk_ich7_lpc
);
718 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH8_1
, quirk_ich7_lpc
);
719 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH8_4
, quirk_ich7_lpc
);
720 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH9_2
, quirk_ich7_lpc
);
721 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH9_4
, quirk_ich7_lpc
);
722 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH9_7
, quirk_ich7_lpc
);
723 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH9_8
, quirk_ich7_lpc
);
724 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH10_1
, quirk_ich7_lpc
);
727 * VIA ACPI: One IO region pointed to by longword at
728 * 0x48 or 0x20 (256 bytes of ACPI registers)
730 static void quirk_vt82c586_acpi(struct pci_dev
*dev
)
732 if (dev
->revision
& 0x10)
733 quirk_io_region(dev
, 0x48, 256, PCI_BRIDGE_RESOURCES
,
736 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C586_3
, quirk_vt82c586_acpi
);
739 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
740 * 0x48 (256 bytes of ACPI registers)
741 * 0x70 (128 bytes of hardware monitoring register)
742 * 0x90 (16 bytes of SMB registers)
744 static void quirk_vt82c686_acpi(struct pci_dev
*dev
)
746 quirk_vt82c586_acpi(dev
);
748 quirk_io_region(dev
, 0x70, 128, PCI_BRIDGE_RESOURCES
+1,
751 quirk_io_region(dev
, 0x90, 16, PCI_BRIDGE_RESOURCES
+2, "vt82c686 SMB");
753 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686_4
, quirk_vt82c686_acpi
);
756 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
757 * 0x88 (128 bytes of power management registers)
758 * 0xd0 (16 bytes of SMB registers)
760 static void quirk_vt8235_acpi(struct pci_dev
*dev
)
762 quirk_io_region(dev
, 0x88, 128, PCI_BRIDGE_RESOURCES
, "vt8235 PM");
763 quirk_io_region(dev
, 0xd0, 16, PCI_BRIDGE_RESOURCES
+1, "vt8235 SMB");
765 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8235
, quirk_vt8235_acpi
);
768 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
769 * Disable fast back-to-back on the secondary bus segment
771 static void quirk_xio2000a(struct pci_dev
*dev
)
773 struct pci_dev
*pdev
;
776 dev_warn(&dev
->dev
, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
777 list_for_each_entry(pdev
, &dev
->subordinate
->devices
, bus_list
) {
778 pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
779 if (command
& PCI_COMMAND_FAST_BACK
)
780 pci_write_config_word(pdev
, PCI_COMMAND
, command
& ~PCI_COMMAND_FAST_BACK
);
783 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI
, PCI_DEVICE_ID_TI_XIO2000A
,
786 #ifdef CONFIG_X86_IO_APIC
788 #include <asm/io_apic.h>
791 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
792 * devices to the external APIC.
794 * TODO: When we have device-specific interrupt routers,
795 * this code will go away from quirks.
797 static void quirk_via_ioapic(struct pci_dev
*dev
)
802 tmp
= 0; /* nothing routed to external APIC */
804 tmp
= 0x1f; /* all known bits (4-0) routed to external APIC */
806 dev_info(&dev
->dev
, "%sbling VIA external APIC routing\n",
807 tmp
== 0 ? "Disa" : "Ena");
809 /* Offset 0x58: External APIC IRQ output control */
810 pci_write_config_byte(dev
, 0x58, tmp
);
812 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686
, quirk_via_ioapic
);
813 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686
, quirk_via_ioapic
);
816 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
817 * This leads to doubled level interrupt rates.
818 * Set this bit to get rid of cycle wastage.
819 * Otherwise uncritical.
821 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev
*dev
)
824 #define BYPASS_APIC_DEASSERT 8
826 pci_read_config_byte(dev
, 0x5B, &misc_control2
);
827 if (!(misc_control2
& BYPASS_APIC_DEASSERT
)) {
828 dev_info(&dev
->dev
, "Bypassing VIA 8237 APIC De-Assert Message\n");
829 pci_write_config_byte(dev
, 0x5B, misc_control2
|BYPASS_APIC_DEASSERT
);
832 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237
, quirk_via_vt8237_bypass_apic_deassert
);
833 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237
, quirk_via_vt8237_bypass_apic_deassert
);
836 * The AMD io apic can hang the box when an apic irq is masked.
837 * We check all revs >= B0 (yet not in the pre production!) as the bug
838 * is currently marked NoFix
840 * We have multiple reports of hangs with this chipset that went away with
841 * noapic specified. For the moment we assume it's the erratum. We may be wrong
842 * of course. However the advice is demonstrably good even if so..
844 static void quirk_amd_ioapic(struct pci_dev
*dev
)
846 if (dev
->revision
>= 0x02) {
847 dev_warn(&dev
->dev
, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
848 dev_warn(&dev
->dev
, " : booting with the \"noapic\" option\n");
851 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_VIPER_7410
, quirk_amd_ioapic
);
852 #endif /* CONFIG_X86_IO_APIC */
854 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
856 static void quirk_cavium_sriov_rnm_link(struct pci_dev
*dev
)
858 /* Fix for improper SRIOV configuration on Cavium cn88xx RNM device */
859 if (dev
->subsystem_device
== 0xa118)
860 dev
->sriov
->link
= dev
->devfn
;
862 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM
, 0xa018, quirk_cavium_sriov_rnm_link
);
866 * Some settings of MMRBC can lead to data corruption so block changes.
867 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
869 static void quirk_amd_8131_mmrbc(struct pci_dev
*dev
)
871 if (dev
->subordinate
&& dev
->revision
<= 0x12) {
872 dev_info(&dev
->dev
, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
874 dev
->subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MMRBC
;
877 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8131_BRIDGE
, quirk_amd_8131_mmrbc
);
880 * FIXME: it is questionable that quirk_via_acpi
881 * is needed. It shows up as an ISA bridge, and does not
882 * support the PCI_INTERRUPT_LINE register at all. Therefore
883 * it seems like setting the pci_dev's 'irq' to the
884 * value of the ACPI SCI interrupt is only done for convenience.
887 static void quirk_via_acpi(struct pci_dev
*d
)
890 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
893 pci_read_config_byte(d
, 0x42, &irq
);
895 if (irq
&& (irq
!= 2))
898 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C586_3
, quirk_via_acpi
);
899 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686_4
, quirk_via_acpi
);
903 * VIA bridges which have VLink
906 static int via_vlink_dev_lo
= -1, via_vlink_dev_hi
= 18;
908 static void quirk_via_bridge(struct pci_dev
*dev
)
910 /* See what bridge we have and find the device ranges */
911 switch (dev
->device
) {
912 case PCI_DEVICE_ID_VIA_82C686
:
913 /* The VT82C686 is special, it attaches to PCI and can have
914 any device number. All its subdevices are functions of
915 that single device. */
916 via_vlink_dev_lo
= PCI_SLOT(dev
->devfn
);
917 via_vlink_dev_hi
= PCI_SLOT(dev
->devfn
);
919 case PCI_DEVICE_ID_VIA_8237
:
920 case PCI_DEVICE_ID_VIA_8237A
:
921 via_vlink_dev_lo
= 15;
923 case PCI_DEVICE_ID_VIA_8235
:
924 via_vlink_dev_lo
= 16;
926 case PCI_DEVICE_ID_VIA_8231
:
927 case PCI_DEVICE_ID_VIA_8233_0
:
928 case PCI_DEVICE_ID_VIA_8233A
:
929 case PCI_DEVICE_ID_VIA_8233C_0
:
930 via_vlink_dev_lo
= 17;
934 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C686
, quirk_via_bridge
);
935 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8231
, quirk_via_bridge
);
936 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8233_0
, quirk_via_bridge
);
937 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8233A
, quirk_via_bridge
);
938 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8233C_0
, quirk_via_bridge
);
939 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8235
, quirk_via_bridge
);
940 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237
, quirk_via_bridge
);
941 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237A
, quirk_via_bridge
);
944 * quirk_via_vlink - VIA VLink IRQ number update
947 * If the device we are dealing with is on a PIC IRQ we need to
948 * ensure that the IRQ line register which usually is not relevant
949 * for PCI cards, is actually written so that interrupts get sent
950 * to the right place.
951 * We only do this on systems where a VIA south bridge was detected,
952 * and only for VIA devices on the motherboard (see quirk_via_bridge
956 static void quirk_via_vlink(struct pci_dev
*dev
)
960 /* Check if we have VLink at all */
961 if (via_vlink_dev_lo
== -1)
966 /* Don't quirk interrupts outside the legacy IRQ range */
967 if (!new_irq
|| new_irq
> 15)
970 /* Internal device ? */
971 if (dev
->bus
->number
!= 0 || PCI_SLOT(dev
->devfn
) > via_vlink_dev_hi
||
972 PCI_SLOT(dev
->devfn
) < via_vlink_dev_lo
)
975 /* This is an internal VLink device on a PIC interrupt. The BIOS
976 ought to have set this but may not have, so we redo it */
978 pci_read_config_byte(dev
, PCI_INTERRUPT_LINE
, &irq
);
979 if (new_irq
!= irq
) {
980 dev_info(&dev
->dev
, "VIA VLink IRQ fixup, from %d to %d\n",
982 udelay(15); /* unknown if delay really needed */
983 pci_write_config_byte(dev
, PCI_INTERRUPT_LINE
, new_irq
);
986 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA
, PCI_ANY_ID
, quirk_via_vlink
);
989 * VIA VT82C598 has its device ID settable and many BIOSes
990 * set it to the ID of VT82C597 for backward compatibility.
991 * We need to switch it off to be able to recognize the real
994 static void quirk_vt82c598_id(struct pci_dev
*dev
)
996 pci_write_config_byte(dev
, 0xfc, 0);
997 pci_read_config_word(dev
, PCI_DEVICE_ID
, &dev
->device
);
999 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_82C597_0
, quirk_vt82c598_id
);
1002 * CardBus controllers have a legacy base address that enables them
1003 * to respond as i82365 pcmcia controllers. We don't want them to
1004 * do this even if the Linux CardBus driver is not loaded, because
1005 * the Linux i82365 driver does not (and should not) handle CardBus.
1007 static void quirk_cardbus_legacy(struct pci_dev
*dev
)
1009 pci_write_config_dword(dev
, PCI_CB_LEGACY_MODE_BASE
, 0);
1011 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID
, PCI_ANY_ID
,
1012 PCI_CLASS_BRIDGE_CARDBUS
, 8, quirk_cardbus_legacy
);
1013 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID
, PCI_ANY_ID
,
1014 PCI_CLASS_BRIDGE_CARDBUS
, 8, quirk_cardbus_legacy
);
1017 * Following the PCI ordering rules is optional on the AMD762. I'm not
1018 * sure what the designers were smoking but let's not inhale...
1020 * To be fair to AMD, it follows the spec by default, its BIOS people
1023 static void quirk_amd_ordering(struct pci_dev
*dev
)
1026 pci_read_config_dword(dev
, 0x4C, &pcic
);
1027 if ((pcic
& 6) != 6) {
1029 dev_warn(&dev
->dev
, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1030 pci_write_config_dword(dev
, 0x4C, pcic
);
1031 pci_read_config_dword(dev
, 0x84, &pcic
);
1032 pcic
|= (1 << 23); /* Required in this mode */
1033 pci_write_config_dword(dev
, 0x84, pcic
);
1036 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_FE_GATE_700C
, quirk_amd_ordering
);
1037 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_FE_GATE_700C
, quirk_amd_ordering
);
1040 * DreamWorks provided workaround for Dunord I-3000 problem
1042 * This card decodes and responds to addresses not apparently
1043 * assigned to it. We force a larger allocation to ensure that
1044 * nothing gets put too close to it.
1046 static void quirk_dunord(struct pci_dev
*dev
)
1048 struct resource
*r
= &dev
->resource
[1];
1050 r
->flags
|= IORESOURCE_UNSET
;
1054 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD
, PCI_DEVICE_ID_DUNORD_I3000
, quirk_dunord
);
1057 * i82380FB mobile docking controller: its PCI-to-PCI bridge
1058 * is subtractive decoding (transparent), and does indicate this
1059 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
1062 static void quirk_transparent_bridge(struct pci_dev
*dev
)
1064 dev
->transparent
= 1;
1066 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82380FB
, quirk_transparent_bridge
);
1067 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA
, 0x605, quirk_transparent_bridge
);
1070 * Common misconfiguration of the MediaGX/Geode PCI master that will
1071 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
1072 * datasheets found at http://www.national.com/analog for info on what
1073 * these bits do. <christer@weinigel.se>
1075 static void quirk_mediagx_master(struct pci_dev
*dev
)
1079 pci_read_config_byte(dev
, 0x41, ®
);
1082 dev_info(&dev
->dev
, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1084 pci_write_config_byte(dev
, 0x41, reg
);
1087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX
, PCI_DEVICE_ID_CYRIX_PCI_MASTER
, quirk_mediagx_master
);
1088 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX
, PCI_DEVICE_ID_CYRIX_PCI_MASTER
, quirk_mediagx_master
);
1091 * Ensure C0 rev restreaming is off. This is normally done by
1092 * the BIOS but in the odd case it is not the results are corruption
1093 * hence the presence of a Linux check
1095 static void quirk_disable_pxb(struct pci_dev
*pdev
)
1099 if (pdev
->revision
!= 0x04) /* Only C0 requires this */
1101 pci_read_config_word(pdev
, 0x40, &config
);
1102 if (config
& (1<<6)) {
1104 pci_write_config_word(pdev
, 0x40, config
);
1105 dev_info(&pdev
->dev
, "C0 revision 450NX. Disabling PCI restreaming\n");
1108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82454NX
, quirk_disable_pxb
);
1109 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82454NX
, quirk_disable_pxb
);
1111 static void quirk_amd_ide_mode(struct pci_dev
*pdev
)
1113 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1116 pci_read_config_byte(pdev
, PCI_CLASS_DEVICE
, &tmp
);
1118 pci_read_config_byte(pdev
, 0x40, &tmp
);
1119 pci_write_config_byte(pdev
, 0x40, tmp
|1);
1120 pci_write_config_byte(pdev
, 0x9, 1);
1121 pci_write_config_byte(pdev
, 0xa, 6);
1122 pci_write_config_byte(pdev
, 0x40, tmp
);
1124 pdev
->class = PCI_CLASS_STORAGE_SATA_AHCI
;
1125 dev_info(&pdev
->dev
, "set SATA to AHCI mode\n");
1128 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_IXP600_SATA
, quirk_amd_ide_mode
);
1129 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_IXP600_SATA
, quirk_amd_ide_mode
);
1130 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_IXP700_SATA
, quirk_amd_ide_mode
);
1131 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_IXP700_SATA
, quirk_amd_ide_mode
);
1132 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE
, quirk_amd_ide_mode
);
1133 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE
, quirk_amd_ide_mode
);
1134 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD
, 0x7900, quirk_amd_ide_mode
);
1135 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD
, 0x7900, quirk_amd_ide_mode
);
1138 * Serverworks CSB5 IDE does not fully support native mode
1140 static void quirk_svwks_csb5ide(struct pci_dev
*pdev
)
1143 pci_read_config_byte(pdev
, PCI_CLASS_PROG
, &prog
);
1147 pci_write_config_byte(pdev
, PCI_CLASS_PROG
, prog
);
1148 /* PCI layer will sort out resources */
1151 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
, quirk_svwks_csb5ide
);
1154 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1156 static void quirk_ide_samemode(struct pci_dev
*pdev
)
1160 pci_read_config_byte(pdev
, PCI_CLASS_PROG
, &prog
);
1162 if (((prog
& 1) && !(prog
& 4)) || ((prog
& 4) && !(prog
& 1))) {
1163 dev_info(&pdev
->dev
, "IDE mode mismatch; forcing legacy mode\n");
1166 pci_write_config_byte(pdev
, PCI_CLASS_PROG
, prog
);
1169 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_10
, quirk_ide_samemode
);
1172 * Some ATA devices break if put into D3
1175 static void quirk_no_ata_d3(struct pci_dev
*pdev
)
1177 pdev
->dev_flags
|= PCI_DEV_FLAGS_NO_D3
;
1179 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1180 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS
, PCI_ANY_ID
,
1181 PCI_CLASS_STORAGE_IDE
, 8, quirk_no_ata_d3
);
1182 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI
, PCI_ANY_ID
,
1183 PCI_CLASS_STORAGE_IDE
, 8, quirk_no_ata_d3
);
1184 /* ALi loses some register settings that we cannot then restore */
1185 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL
, PCI_ANY_ID
,
1186 PCI_CLASS_STORAGE_IDE
, 8, quirk_no_ata_d3
);
1187 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1188 occur when mode detecting */
1189 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA
, PCI_ANY_ID
,
1190 PCI_CLASS_STORAGE_IDE
, 8, quirk_no_ata_d3
);
1192 /* This was originally an Alpha specific thing, but it really fits here.
1193 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1195 static void quirk_eisa_bridge(struct pci_dev
*dev
)
1197 dev
->class = PCI_CLASS_BRIDGE_EISA
<< 8;
1199 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82375
, quirk_eisa_bridge
);
1203 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1204 * is not activated. The myth is that Asus said that they do not want the
1205 * users to be irritated by just another PCI Device in the Win98 device
1206 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1207 * package 2.7.0 for details)
1209 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1210 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1211 * becomes necessary to do this tweak in two steps -- the chosen trigger
1212 * is either the Host bridge (preferred) or on-board VGA controller.
1214 * Note that we used to unhide the SMBus that way on Toshiba laptops
1215 * (Satellite A40 and Tecra M2) but then found that the thermal management
1216 * was done by SMM code, which could cause unsynchronized concurrent
1217 * accesses to the SMBus registers, with potentially bad effects. Thus you
1218 * should be very careful when adding new entries: if SMM is accessing the
1219 * Intel SMBus, this is a very good reason to leave it hidden.
1221 * Likewise, many recent laptops use ACPI for thermal management. If the
1222 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1223 * natively, and keeping the SMBus hidden is the right thing to do. If you
1224 * are about to add an entry in the table below, please first disassemble
1225 * the DSDT and double-check that there is no code accessing the SMBus.
1227 static int asus_hides_smbus
;
1229 static void asus_hides_smbus_hostbridge(struct pci_dev
*dev
)
1231 if (unlikely(dev
->subsystem_vendor
== PCI_VENDOR_ID_ASUSTEK
)) {
1232 if (dev
->device
== PCI_DEVICE_ID_INTEL_82845_HB
)
1233 switch (dev
->subsystem_device
) {
1234 case 0x8025: /* P4B-LX */
1235 case 0x8070: /* P4B */
1236 case 0x8088: /* P4B533 */
1237 case 0x1626: /* L3C notebook */
1238 asus_hides_smbus
= 1;
1240 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82845G_HB
)
1241 switch (dev
->subsystem_device
) {
1242 case 0x80b1: /* P4GE-V */
1243 case 0x80b2: /* P4PE */
1244 case 0x8093: /* P4B533-V */
1245 asus_hides_smbus
= 1;
1247 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82850_HB
)
1248 switch (dev
->subsystem_device
) {
1249 case 0x8030: /* P4T533 */
1250 asus_hides_smbus
= 1;
1252 else if (dev
->device
== PCI_DEVICE_ID_INTEL_7205_0
)
1253 switch (dev
->subsystem_device
) {
1254 case 0x8070: /* P4G8X Deluxe */
1255 asus_hides_smbus
= 1;
1257 else if (dev
->device
== PCI_DEVICE_ID_INTEL_E7501_MCH
)
1258 switch (dev
->subsystem_device
) {
1259 case 0x80c9: /* PU-DLS */
1260 asus_hides_smbus
= 1;
1262 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82855GM_HB
)
1263 switch (dev
->subsystem_device
) {
1264 case 0x1751: /* M2N notebook */
1265 case 0x1821: /* M5N notebook */
1266 case 0x1897: /* A6L notebook */
1267 asus_hides_smbus
= 1;
1269 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82855PM_HB
)
1270 switch (dev
->subsystem_device
) {
1271 case 0x184b: /* W1N notebook */
1272 case 0x186a: /* M6Ne notebook */
1273 asus_hides_smbus
= 1;
1275 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82865_HB
)
1276 switch (dev
->subsystem_device
) {
1277 case 0x80f2: /* P4P800-X */
1278 asus_hides_smbus
= 1;
1280 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82915GM_HB
)
1281 switch (dev
->subsystem_device
) {
1282 case 0x1882: /* M6V notebook */
1283 case 0x1977: /* A6VA notebook */
1284 asus_hides_smbus
= 1;
1286 } else if (unlikely(dev
->subsystem_vendor
== PCI_VENDOR_ID_HP
)) {
1287 if (dev
->device
== PCI_DEVICE_ID_INTEL_82855PM_HB
)
1288 switch (dev
->subsystem_device
) {
1289 case 0x088C: /* HP Compaq nc8000 */
1290 case 0x0890: /* HP Compaq nc6000 */
1291 asus_hides_smbus
= 1;
1293 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82865_HB
)
1294 switch (dev
->subsystem_device
) {
1295 case 0x12bc: /* HP D330L */
1296 case 0x12bd: /* HP D530 */
1297 case 0x006a: /* HP Compaq nx9500 */
1298 asus_hides_smbus
= 1;
1300 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82875_HB
)
1301 switch (dev
->subsystem_device
) {
1302 case 0x12bf: /* HP xw4100 */
1303 asus_hides_smbus
= 1;
1305 } else if (unlikely(dev
->subsystem_vendor
== PCI_VENDOR_ID_SAMSUNG
)) {
1306 if (dev
->device
== PCI_DEVICE_ID_INTEL_82855PM_HB
)
1307 switch (dev
->subsystem_device
) {
1308 case 0xC00C: /* Samsung P35 notebook */
1309 asus_hides_smbus
= 1;
1311 } else if (unlikely(dev
->subsystem_vendor
== PCI_VENDOR_ID_COMPAQ
)) {
1312 if (dev
->device
== PCI_DEVICE_ID_INTEL_82855PM_HB
)
1313 switch (dev
->subsystem_device
) {
1314 case 0x0058: /* Compaq Evo N620c */
1315 asus_hides_smbus
= 1;
1317 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82810_IG3
)
1318 switch (dev
->subsystem_device
) {
1319 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1320 /* Motherboard doesn't have Host bridge
1321 * subvendor/subdevice IDs, therefore checking
1322 * its on-board VGA controller */
1323 asus_hides_smbus
= 1;
1325 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82801DB_2
)
1326 switch (dev
->subsystem_device
) {
1327 case 0x00b8: /* Compaq Evo D510 CMT */
1328 case 0x00b9: /* Compaq Evo D510 SFF */
1329 case 0x00ba: /* Compaq Evo D510 USDT */
1330 /* Motherboard doesn't have Host bridge
1331 * subvendor/subdevice IDs and on-board VGA
1332 * controller is disabled if an AGP card is
1333 * inserted, therefore checking USB UHCI
1335 asus_hides_smbus
= 1;
1337 else if (dev
->device
== PCI_DEVICE_ID_INTEL_82815_CGC
)
1338 switch (dev
->subsystem_device
) {
1339 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1340 /* Motherboard doesn't have host bridge
1341 * subvendor/subdevice IDs, therefore checking
1342 * its on-board VGA controller */
1343 asus_hides_smbus
= 1;
1347 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82845_HB
, asus_hides_smbus_hostbridge
);
1348 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82845G_HB
, asus_hides_smbus_hostbridge
);
1349 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82850_HB
, asus_hides_smbus_hostbridge
);
1350 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82865_HB
, asus_hides_smbus_hostbridge
);
1351 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82875_HB
, asus_hides_smbus_hostbridge
);
1352 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_7205_0
, asus_hides_smbus_hostbridge
);
1353 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_E7501_MCH
, asus_hides_smbus_hostbridge
);
1354 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82855PM_HB
, asus_hides_smbus_hostbridge
);
1355 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82855GM_HB
, asus_hides_smbus_hostbridge
);
1356 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82915GM_HB
, asus_hides_smbus_hostbridge
);
1358 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82810_IG3
, asus_hides_smbus_hostbridge
);
1359 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_2
, asus_hides_smbus_hostbridge
);
1360 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82815_CGC
, asus_hides_smbus_hostbridge
);
1362 static void asus_hides_smbus_lpc(struct pci_dev
*dev
)
1366 if (likely(!asus_hides_smbus
))
1369 pci_read_config_word(dev
, 0xF2, &val
);
1371 pci_write_config_word(dev
, 0xF2, val
& (~0x8));
1372 pci_read_config_word(dev
, 0xF2, &val
);
1374 dev_info(&dev
->dev
, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1377 dev_info(&dev
->dev
, "Enabled i801 SMBus device\n");
1380 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801AA_0
, asus_hides_smbus_lpc
);
1381 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_0
, asus_hides_smbus_lpc
);
1382 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801BA_0
, asus_hides_smbus_lpc
);
1383 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_0
, asus_hides_smbus_lpc
);
1384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_12
, asus_hides_smbus_lpc
);
1385 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_12
, asus_hides_smbus_lpc
);
1386 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801EB_0
, asus_hides_smbus_lpc
);
1387 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801AA_0
, asus_hides_smbus_lpc
);
1388 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_0
, asus_hides_smbus_lpc
);
1389 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801BA_0
, asus_hides_smbus_lpc
);
1390 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_0
, asus_hides_smbus_lpc
);
1391 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801CA_12
, asus_hides_smbus_lpc
);
1392 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801DB_12
, asus_hides_smbus_lpc
);
1393 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82801EB_0
, asus_hides_smbus_lpc
);
1395 /* It appears we just have one such device. If not, we have a warning */
1396 static void __iomem
*asus_rcba_base
;
1397 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev
*dev
)
1401 if (likely(!asus_hides_smbus
))
1403 WARN_ON(asus_rcba_base
);
1405 pci_read_config_dword(dev
, 0xF0, &rcba
);
1406 /* use bits 31:14, 16 kB aligned */
1407 asus_rcba_base
= ioremap_nocache(rcba
& 0xFFFFC000, 0x4000);
1408 if (asus_rcba_base
== NULL
)
1412 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev
*dev
)
1416 if (likely(!asus_hides_smbus
|| !asus_rcba_base
))
1418 /* read the Function Disable register, dword mode only */
1419 val
= readl(asus_rcba_base
+ 0x3418);
1420 writel(val
& 0xFFFFFFF7, asus_rcba_base
+ 0x3418); /* enable the SMBus device */
1423 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev
*dev
)
1425 if (likely(!asus_hides_smbus
|| !asus_rcba_base
))
1427 iounmap(asus_rcba_base
);
1428 asus_rcba_base
= NULL
;
1429 dev_info(&dev
->dev
, "Enabled ICH6/i801 SMBus device\n");
1432 static void asus_hides_smbus_lpc_ich6(struct pci_dev
*dev
)
1434 asus_hides_smbus_lpc_ich6_suspend(dev
);
1435 asus_hides_smbus_lpc_ich6_resume_early(dev
);
1436 asus_hides_smbus_lpc_ich6_resume(dev
);
1438 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_1
, asus_hides_smbus_lpc_ich6
);
1439 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_1
, asus_hides_smbus_lpc_ich6_suspend
);
1440 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_1
, asus_hides_smbus_lpc_ich6_resume
);
1441 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ICH6_1
, asus_hides_smbus_lpc_ich6_resume_early
);
1444 * SiS 96x south bridge: BIOS typically hides SMBus device...
1446 static void quirk_sis_96x_smbus(struct pci_dev
*dev
)
1449 pci_read_config_byte(dev
, 0x77, &val
);
1451 dev_info(&dev
->dev
, "Enabling SiS 96x SMBus\n");
1452 pci_write_config_byte(dev
, 0x77, val
& ~0x10);
1455 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_961
, quirk_sis_96x_smbus
);
1456 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_962
, quirk_sis_96x_smbus
);
1457 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_963
, quirk_sis_96x_smbus
);
1458 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_LPC
, quirk_sis_96x_smbus
);
1459 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_961
, quirk_sis_96x_smbus
);
1460 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_962
, quirk_sis_96x_smbus
);
1461 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_963
, quirk_sis_96x_smbus
);
1462 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_LPC
, quirk_sis_96x_smbus
);
1465 * ... This is further complicated by the fact that some SiS96x south
1466 * bridges pretend to be 85C503/5513 instead. In that case see if we
1467 * spotted a compatible north bridge to make sure.
1468 * (pci_find_device doesn't work yet)
1470 * We can also enable the sis96x bit in the discovery register..
1472 #define SIS_DETECT_REGISTER 0x40
1474 static void quirk_sis_503(struct pci_dev
*dev
)
1479 pci_read_config_byte(dev
, SIS_DETECT_REGISTER
, ®
);
1480 pci_write_config_byte(dev
, SIS_DETECT_REGISTER
, reg
| (1 << 6));
1481 pci_read_config_word(dev
, PCI_DEVICE_ID
, &devid
);
1482 if (((devid
& 0xfff0) != 0x0960) && (devid
!= 0x0018)) {
1483 pci_write_config_byte(dev
, SIS_DETECT_REGISTER
, reg
);
1488 * Ok, it now shows up as a 96x.. run the 96x quirk by
1489 * hand in case it has already been processed.
1490 * (depends on link order, which is apparently not guaranteed)
1492 dev
->device
= devid
;
1493 quirk_sis_96x_smbus(dev
);
1495 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_503
, quirk_sis_503
);
1496 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_503
, quirk_sis_503
);
1500 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1501 * and MC97 modem controller are disabled when a second PCI soundcard is
1502 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1505 static void asus_hides_ac97_lpc(struct pci_dev
*dev
)
1508 int asus_hides_ac97
= 0;
1510 if (likely(dev
->subsystem_vendor
== PCI_VENDOR_ID_ASUSTEK
)) {
1511 if (dev
->device
== PCI_DEVICE_ID_VIA_8237
)
1512 asus_hides_ac97
= 1;
1515 if (!asus_hides_ac97
)
1518 pci_read_config_byte(dev
, 0x50, &val
);
1520 pci_write_config_byte(dev
, 0x50, val
& (~0xc0));
1521 pci_read_config_byte(dev
, 0x50, &val
);
1523 dev_info(&dev
->dev
, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1526 dev_info(&dev
->dev
, "Enabled onboard AC97/MC97 devices\n");
1529 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237
, asus_hides_ac97_lpc
);
1530 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8237
, asus_hides_ac97_lpc
);
1532 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1535 * If we are using libata we can drive this chip properly but must
1536 * do this early on to make the additional device appear during
1539 static void quirk_jmicron_ata(struct pci_dev
*pdev
)
1541 u32 conf1
, conf5
, class;
1544 /* Only poke fn 0 */
1545 if (PCI_FUNC(pdev
->devfn
))
1548 pci_read_config_dword(pdev
, 0x40, &conf1
);
1549 pci_read_config_dword(pdev
, 0x80, &conf5
);
1551 conf1
&= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1552 conf5
&= ~(1 << 24); /* Clear bit 24 */
1554 switch (pdev
->device
) {
1555 case PCI_DEVICE_ID_JMICRON_JMB360
: /* SATA single port */
1556 case PCI_DEVICE_ID_JMICRON_JMB362
: /* SATA dual ports */
1557 case PCI_DEVICE_ID_JMICRON_JMB364
: /* SATA dual ports */
1558 /* The controller should be in single function ahci mode */
1559 conf1
|= 0x0002A100; /* Set 8, 13, 15, 17 */
1562 case PCI_DEVICE_ID_JMICRON_JMB365
:
1563 case PCI_DEVICE_ID_JMICRON_JMB366
:
1564 /* Redirect IDE second PATA port to the right spot */
1567 case PCI_DEVICE_ID_JMICRON_JMB361
:
1568 case PCI_DEVICE_ID_JMICRON_JMB363
:
1569 case PCI_DEVICE_ID_JMICRON_JMB369
:
1570 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1571 /* Set the class codes correctly and then direct IDE 0 */
1572 conf1
|= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1575 case PCI_DEVICE_ID_JMICRON_JMB368
:
1576 /* The controller should be in single function IDE mode */
1577 conf1
|= 0x00C00000; /* Set 22, 23 */
1581 pci_write_config_dword(pdev
, 0x40, conf1
);
1582 pci_write_config_dword(pdev
, 0x80, conf5
);
1584 /* Update pdev accordingly */
1585 pci_read_config_byte(pdev
, PCI_HEADER_TYPE
, &hdr
);
1586 pdev
->hdr_type
= hdr
& 0x7f;
1587 pdev
->multifunction
= !!(hdr
& 0x80);
1589 pci_read_config_dword(pdev
, PCI_CLASS_REVISION
, &class);
1590 pdev
->class = class >> 8;
1592 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB360
, quirk_jmicron_ata
);
1593 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB361
, quirk_jmicron_ata
);
1594 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB362
, quirk_jmicron_ata
);
1595 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB363
, quirk_jmicron_ata
);
1596 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB364
, quirk_jmicron_ata
);
1597 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB365
, quirk_jmicron_ata
);
1598 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB366
, quirk_jmicron_ata
);
1599 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB368
, quirk_jmicron_ata
);
1600 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB369
, quirk_jmicron_ata
);
1601 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB360
, quirk_jmicron_ata
);
1602 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB361
, quirk_jmicron_ata
);
1603 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB362
, quirk_jmicron_ata
);
1604 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB363
, quirk_jmicron_ata
);
1605 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB364
, quirk_jmicron_ata
);
1606 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB365
, quirk_jmicron_ata
);
1607 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB366
, quirk_jmicron_ata
);
1608 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB368
, quirk_jmicron_ata
);
1609 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON
, PCI_DEVICE_ID_JMICRON_JMB369
, quirk_jmicron_ata
);
1613 static void quirk_jmicron_async_suspend(struct pci_dev
*dev
)
1615 if (dev
->multifunction
) {
1616 device_disable_async_suspend(&dev
->dev
);
1617 dev_info(&dev
->dev
, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1620 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON
, PCI_ANY_ID
, PCI_CLASS_STORAGE_IDE
, 8, quirk_jmicron_async_suspend
);
1621 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SATA_AHCI
, 0, quirk_jmicron_async_suspend
);
1622 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON
, 0x2362, quirk_jmicron_async_suspend
);
1623 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON
, 0x236f, quirk_jmicron_async_suspend
);
1625 #ifdef CONFIG_X86_IO_APIC
1626 static void quirk_alder_ioapic(struct pci_dev
*pdev
)
1630 if ((pdev
->class >> 8) != 0xff00)
1633 /* the first BAR is the location of the IO APIC...we must
1634 * not touch this (and it's already covered by the fixmap), so
1635 * forcibly insert it into the resource tree */
1636 if (pci_resource_start(pdev
, 0) && pci_resource_len(pdev
, 0))
1637 insert_resource(&iomem_resource
, &pdev
->resource
[0]);
1639 /* The next five BARs all seem to be rubbish, so just clean
1641 for (i
= 1; i
< 6; i
++)
1642 memset(&pdev
->resource
[i
], 0, sizeof(pdev
->resource
[i
]));
1644 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_EESSC
, quirk_alder_ioapic
);
1647 static void quirk_pcie_mch(struct pci_dev
*pdev
)
1651 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_E7520_MCH
, quirk_pcie_mch
);
1652 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_E7320_MCH
, quirk_pcie_mch
);
1653 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_E7525_MCH
, quirk_pcie_mch
);
1655 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI
, 0x1610, PCI_CLASS_BRIDGE_PCI
, 8, quirk_pcie_mch
);
1658 * It's possible for the MSI to get corrupted if shpc and acpi
1659 * are used together on certain PXH-based systems.
1661 static void quirk_pcie_pxh(struct pci_dev
*dev
)
1664 dev_warn(&dev
->dev
, "PXH quirk detected; SHPC device MSI disabled\n");
1666 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXHD_0
, quirk_pcie_pxh
);
1667 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXHD_1
, quirk_pcie_pxh
);
1668 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_0
, quirk_pcie_pxh
);
1669 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_1
, quirk_pcie_pxh
);
1670 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXHV
, quirk_pcie_pxh
);
1673 * Some Intel PCI Express chipsets have trouble with downstream
1674 * device power management.
1676 static void quirk_intel_pcie_pm(struct pci_dev
*dev
)
1678 pci_pm_d3_delay
= 120;
1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e2, quirk_intel_pcie_pm
);
1683 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e3, quirk_intel_pcie_pm
);
1684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e4, quirk_intel_pcie_pm
);
1685 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e5, quirk_intel_pcie_pm
);
1686 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e6, quirk_intel_pcie_pm
);
1687 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25e7, quirk_intel_pcie_pm
);
1688 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25f7, quirk_intel_pcie_pm
);
1689 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25f8, quirk_intel_pcie_pm
);
1690 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25f9, quirk_intel_pcie_pm
);
1691 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x25fa, quirk_intel_pcie_pm
);
1692 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2601, quirk_intel_pcie_pm
);
1693 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2602, quirk_intel_pcie_pm
);
1694 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2603, quirk_intel_pcie_pm
);
1695 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2604, quirk_intel_pcie_pm
);
1696 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2605, quirk_intel_pcie_pm
);
1697 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2606, quirk_intel_pcie_pm
);
1698 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2607, quirk_intel_pcie_pm
);
1699 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2608, quirk_intel_pcie_pm
);
1700 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2609, quirk_intel_pcie_pm
);
1701 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x260a, quirk_intel_pcie_pm
);
1702 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x260b, quirk_intel_pcie_pm
);
1704 static void quirk_radeon_pm(struct pci_dev
*dev
)
1706 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_APPLE
&&
1707 dev
->subsystem_device
== 0x00e2) {
1708 if (dev
->d3_delay
< 20) {
1710 dev_info(&dev
->dev
, "extending delay after power-on from D3 to %d msec\n",
1715 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x6741, quirk_radeon_pm
);
1717 #ifdef CONFIG_X86_IO_APIC
1718 static int dmi_disable_ioapicreroute(const struct dmi_system_id
*d
)
1720 noioapicreroute
= 1;
1721 pr_info("%s detected: disable boot interrupt reroute\n", d
->ident
);
1726 static const struct dmi_system_id boot_interrupt_dmi_table
[] = {
1728 * Systems to exclude from boot interrupt reroute quirks
1731 .callback
= dmi_disable_ioapicreroute
,
1732 .ident
= "ASUSTek Computer INC. M2N-LR",
1734 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTek Computer INC."),
1735 DMI_MATCH(DMI_PRODUCT_NAME
, "M2N-LR"),
1742 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1743 * remap the original interrupt in the linux kernel to the boot interrupt, so
1744 * that a PCI device's interrupt handler is installed on the boot interrupt
1747 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev
*dev
)
1749 dmi_check_system(boot_interrupt_dmi_table
);
1750 if (noioapicquirk
|| noioapicreroute
)
1753 dev
->irq_reroute_variant
= INTEL_IRQ_REROUTE_VARIANT
;
1754 dev_info(&dev
->dev
, "rerouting interrupts for [%04x:%04x]\n",
1755 dev
->vendor
, dev
->device
);
1757 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80333_0
, quirk_reroute_to_boot_interrupts_intel
);
1758 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80333_1
, quirk_reroute_to_boot_interrupts_intel
);
1759 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ESB2_0
, quirk_reroute_to_boot_interrupts_intel
);
1760 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_0
, quirk_reroute_to_boot_interrupts_intel
);
1761 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_1
, quirk_reroute_to_boot_interrupts_intel
);
1762 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXHV
, quirk_reroute_to_boot_interrupts_intel
);
1763 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80332_0
, quirk_reroute_to_boot_interrupts_intel
);
1764 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80332_1
, quirk_reroute_to_boot_interrupts_intel
);
1765 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80333_0
, quirk_reroute_to_boot_interrupts_intel
);
1766 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80333_1
, quirk_reroute_to_boot_interrupts_intel
);
1767 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ESB2_0
, quirk_reroute_to_boot_interrupts_intel
);
1768 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_0
, quirk_reroute_to_boot_interrupts_intel
);
1769 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXH_1
, quirk_reroute_to_boot_interrupts_intel
);
1770 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PXHV
, quirk_reroute_to_boot_interrupts_intel
);
1771 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80332_0
, quirk_reroute_to_boot_interrupts_intel
);
1772 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_80332_1
, quirk_reroute_to_boot_interrupts_intel
);
1775 * On some chipsets we can disable the generation of legacy INTx boot
1780 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1781 * 300641-004US, section 5.7.3.
1783 #define INTEL_6300_IOAPIC_ABAR 0x40
1784 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1786 static void quirk_disable_intel_boot_interrupt(struct pci_dev
*dev
)
1788 u16 pci_config_word
;
1793 pci_read_config_word(dev
, INTEL_6300_IOAPIC_ABAR
, &pci_config_word
);
1794 pci_config_word
|= INTEL_6300_DISABLE_BOOT_IRQ
;
1795 pci_write_config_word(dev
, INTEL_6300_IOAPIC_ABAR
, pci_config_word
);
1797 dev_info(&dev
->dev
, "disabled boot interrupts on device [%04x:%04x]\n",
1798 dev
->vendor
, dev
->device
);
1800 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ESB_10
, quirk_disable_intel_boot_interrupt
);
1801 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_ESB_10
, quirk_disable_intel_boot_interrupt
);
1804 * disable boot interrupts on HT-1000
1806 #define BC_HT1000_FEATURE_REG 0x64
1807 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1808 #define BC_HT1000_MAP_IDX 0xC00
1809 #define BC_HT1000_MAP_DATA 0xC01
1811 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev
*dev
)
1813 u32 pci_config_dword
;
1819 pci_read_config_dword(dev
, BC_HT1000_FEATURE_REG
, &pci_config_dword
);
1820 pci_write_config_dword(dev
, BC_HT1000_FEATURE_REG
, pci_config_dword
|
1821 BC_HT1000_PIC_REGS_ENABLE
);
1823 for (irq
= 0x10; irq
< 0x10 + 32; irq
++) {
1824 outb(irq
, BC_HT1000_MAP_IDX
);
1825 outb(0x00, BC_HT1000_MAP_DATA
);
1828 pci_write_config_dword(dev
, BC_HT1000_FEATURE_REG
, pci_config_dword
);
1830 dev_info(&dev
->dev
, "disabled boot interrupts on device [%04x:%04x]\n",
1831 dev
->vendor
, dev
->device
);
1833 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_HT1000SB
, quirk_disable_broadcom_boot_interrupt
);
1834 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_HT1000SB
, quirk_disable_broadcom_boot_interrupt
);
1837 * disable boot interrupts on AMD and ATI chipsets
1840 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1841 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1842 * (due to an erratum).
1844 #define AMD_813X_MISC 0x40
1845 #define AMD_813X_NOIOAMODE (1<<0)
1846 #define AMD_813X_REV_B1 0x12
1847 #define AMD_813X_REV_B2 0x13
1849 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev
*dev
)
1851 u32 pci_config_dword
;
1855 if ((dev
->revision
== AMD_813X_REV_B1
) ||
1856 (dev
->revision
== AMD_813X_REV_B2
))
1859 pci_read_config_dword(dev
, AMD_813X_MISC
, &pci_config_dword
);
1860 pci_config_dword
&= ~AMD_813X_NOIOAMODE
;
1861 pci_write_config_dword(dev
, AMD_813X_MISC
, pci_config_dword
);
1863 dev_info(&dev
->dev
, "disabled boot interrupts on device [%04x:%04x]\n",
1864 dev
->vendor
, dev
->device
);
1866 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8131_BRIDGE
, quirk_disable_amd_813x_boot_interrupt
);
1867 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8131_BRIDGE
, quirk_disable_amd_813x_boot_interrupt
);
1868 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8132_BRIDGE
, quirk_disable_amd_813x_boot_interrupt
);
1869 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8132_BRIDGE
, quirk_disable_amd_813x_boot_interrupt
);
1871 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1873 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev
*dev
)
1875 u16 pci_config_word
;
1880 pci_read_config_word(dev
, AMD_8111_PCI_IRQ_ROUTING
, &pci_config_word
);
1881 if (!pci_config_word
) {
1882 dev_info(&dev
->dev
, "boot interrupts on device [%04x:%04x] already disabled\n",
1883 dev
->vendor
, dev
->device
);
1886 pci_write_config_word(dev
, AMD_8111_PCI_IRQ_ROUTING
, 0);
1887 dev_info(&dev
->dev
, "disabled boot interrupts on device [%04x:%04x]\n",
1888 dev
->vendor
, dev
->device
);
1890 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8111_SMBUS
, quirk_disable_amd_8111_boot_interrupt
);
1891 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8111_SMBUS
, quirk_disable_amd_8111_boot_interrupt
);
1892 #endif /* CONFIG_X86_IO_APIC */
1895 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1896 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1897 * Re-allocate the region if needed...
1899 static void quirk_tc86c001_ide(struct pci_dev
*dev
)
1901 struct resource
*r
= &dev
->resource
[0];
1903 if (r
->start
& 0x8) {
1904 r
->flags
|= IORESOURCE_UNSET
;
1909 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2
,
1910 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE
,
1911 quirk_tc86c001_ide
);
1914 * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the
1915 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
1916 * being read correctly if bit 7 of the base address is set.
1917 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
1918 * Re-allocate the regions to a 256-byte boundary if necessary.
1920 static void quirk_plx_pci9050(struct pci_dev
*dev
)
1924 /* Fixed in revision 2 (PCI 9052). */
1925 if (dev
->revision
>= 2)
1927 for (bar
= 0; bar
<= 1; bar
++)
1928 if (pci_resource_len(dev
, bar
) == 0x80 &&
1929 (pci_resource_start(dev
, bar
) & 0x80)) {
1930 struct resource
*r
= &dev
->resource
[bar
];
1931 dev_info(&dev
->dev
, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
1933 r
->flags
|= IORESOURCE_UNSET
;
1938 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX
, PCI_DEVICE_ID_PLX_9050
,
1941 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
1942 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
1943 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
1944 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
1946 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
1949 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050
);
1950 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050
);
1952 static void quirk_netmos(struct pci_dev
*dev
)
1954 unsigned int num_parallel
= (dev
->subsystem_device
& 0xf0) >> 4;
1955 unsigned int num_serial
= dev
->subsystem_device
& 0xf;
1958 * These Netmos parts are multiport serial devices with optional
1959 * parallel ports. Even when parallel ports are present, they
1960 * are identified as class SERIAL, which means the serial driver
1961 * will claim them. To prevent this, mark them as class OTHER.
1962 * These combo devices should be claimed by parport_serial.
1964 * The subdevice ID is of the form 0x00PS, where <P> is the number
1965 * of parallel ports and <S> is the number of serial ports.
1967 switch (dev
->device
) {
1968 case PCI_DEVICE_ID_NETMOS_9835
:
1969 /* Well, this rule doesn't hold for the following 9835 device */
1970 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_IBM
&&
1971 dev
->subsystem_device
== 0x0299)
1973 case PCI_DEVICE_ID_NETMOS_9735
:
1974 case PCI_DEVICE_ID_NETMOS_9745
:
1975 case PCI_DEVICE_ID_NETMOS_9845
:
1976 case PCI_DEVICE_ID_NETMOS_9855
:
1978 dev_info(&dev
->dev
, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
1979 dev
->device
, num_parallel
, num_serial
);
1980 dev
->class = (PCI_CLASS_COMMUNICATION_OTHER
<< 8) |
1981 (dev
->class & 0xff);
1985 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS
, PCI_ANY_ID
,
1986 PCI_CLASS_COMMUNICATION_SERIAL
, 8, quirk_netmos
);
1989 * Quirk non-zero PCI functions to route VPD access through function 0 for
1990 * devices that share VPD resources between functions. The functions are
1991 * expected to be identical devices.
1993 static void quirk_f0_vpd_link(struct pci_dev
*dev
)
1997 if (!PCI_FUNC(dev
->devfn
))
2000 f0
= pci_get_slot(dev
->bus
, PCI_DEVFN(PCI_SLOT(dev
->devfn
), 0));
2004 if (f0
->vpd
&& dev
->class == f0
->class &&
2005 dev
->vendor
== f0
->vendor
&& dev
->device
== f0
->device
)
2006 dev
->dev_flags
|= PCI_DEV_FLAGS_VPD_REF_F0
;
2010 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
,
2011 PCI_CLASS_NETWORK_ETHERNET
, 8, quirk_f0_vpd_link
);
2013 static void quirk_e100_interrupt(struct pci_dev
*dev
)
2019 switch (dev
->device
) {
2020 /* PCI IDs taken from drivers/net/e100.c */
2022 case 0x1030 ... 0x1034:
2023 case 0x1038 ... 0x103E:
2024 case 0x1050 ... 0x1057:
2026 case 0x1064 ... 0x106B:
2027 case 0x1091 ... 0x1095:
2040 * Some firmware hands off the e100 with interrupts enabled,
2041 * which can cause a flood of interrupts if packets are
2042 * received before the driver attaches to the device. So
2043 * disable all e100 interrupts here. The driver will
2044 * re-enable them when it's ready.
2046 pci_read_config_word(dev
, PCI_COMMAND
, &command
);
2048 if (!(command
& PCI_COMMAND_MEMORY
) || !pci_resource_start(dev
, 0))
2052 * Check that the device is in the D0 power state. If it's not,
2053 * there is no point to look any further.
2056 pci_read_config_word(dev
, dev
->pm_cap
+ PCI_PM_CTRL
, &pmcsr
);
2057 if ((pmcsr
& PCI_PM_CTRL_STATE_MASK
) != PCI_D0
)
2061 /* Convert from PCI bus to resource space. */
2062 csr
= ioremap(pci_resource_start(dev
, 0), 8);
2064 dev_warn(&dev
->dev
, "Can't map e100 registers\n");
2068 cmd_hi
= readb(csr
+ 3);
2070 dev_warn(&dev
->dev
, "Firmware left e100 interrupts enabled; disabling\n");
2076 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
,
2077 PCI_CLASS_NETWORK_ETHERNET
, 8, quirk_e100_interrupt
);
2080 * The 82575 and 82598 may experience data corruption issues when transitioning
2081 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2083 static void quirk_disable_aspm_l0s(struct pci_dev
*dev
)
2085 dev_info(&dev
->dev
, "Disabling L0s\n");
2086 pci_disable_link_state(dev
, PCIE_LINK_STATE_L0S
);
2088 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10a7, quirk_disable_aspm_l0s
);
2089 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10a9, quirk_disable_aspm_l0s
);
2090 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10b6, quirk_disable_aspm_l0s
);
2091 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10c6, quirk_disable_aspm_l0s
);
2092 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10c7, quirk_disable_aspm_l0s
);
2093 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10c8, quirk_disable_aspm_l0s
);
2094 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10d6, quirk_disable_aspm_l0s
);
2095 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10db, quirk_disable_aspm_l0s
);
2096 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10dd, quirk_disable_aspm_l0s
);
2097 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10e1, quirk_disable_aspm_l0s
);
2098 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10ec, quirk_disable_aspm_l0s
);
2099 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10f1, quirk_disable_aspm_l0s
);
2100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x10f4, quirk_disable_aspm_l0s
);
2101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1508, quirk_disable_aspm_l0s
);
2103 static void fixup_rev1_53c810(struct pci_dev
*dev
)
2105 u32
class = dev
->class;
2108 * rev 1 ncr53c810 chips don't set the class at all which means
2109 * they don't get their resources remapped. Fix that here.
2114 dev
->class = PCI_CLASS_STORAGE_SCSI
<< 8;
2115 dev_info(&dev
->dev
, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2118 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR
, PCI_DEVICE_ID_NCR_53C810
, fixup_rev1_53c810
);
2120 /* Enable 1k I/O space granularity on the Intel P64H2 */
2121 static void quirk_p64h2_1k_io(struct pci_dev
*dev
)
2125 pci_read_config_word(dev
, 0x40, &en1k
);
2128 dev_info(&dev
->dev
, "Enable I/O Space to 1KB granularity\n");
2129 dev
->io_window_1k
= 1;
2132 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x1460, quirk_p64h2_1k_io
);
2134 /* Under some circumstances, AER is not linked with extended capabilities.
2135 * Force it to be linked by setting the corresponding control bit in the
2138 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev
*dev
)
2141 if (pci_read_config_byte(dev
, 0xf41, &b
) == 0) {
2143 pci_write_config_byte(dev
, 0xf41, b
| 0x20);
2144 dev_info(&dev
->dev
, "Linking AER extended capability\n");
2148 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA
, PCI_DEVICE_ID_NVIDIA_CK804_PCIE
,
2149 quirk_nvidia_ck804_pcie_aer_ext_cap
);
2150 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA
, PCI_DEVICE_ID_NVIDIA_CK804_PCIE
,
2151 quirk_nvidia_ck804_pcie_aer_ext_cap
);
2153 static void quirk_via_cx700_pci_parking_caching(struct pci_dev
*dev
)
2156 * Disable PCI Bus Parking and PCI Master read caching on CX700
2157 * which causes unspecified timing errors with a VT6212L on the PCI
2158 * bus leading to USB2.0 packet loss.
2160 * This quirk is only enabled if a second (on the external PCI bus)
2161 * VT6212L is found -- the CX700 core itself also contains a USB
2162 * host controller with the same PCI ID as the VT6212L.
2165 /* Count VT6212L instances */
2166 struct pci_dev
*p
= pci_get_device(PCI_VENDOR_ID_VIA
,
2167 PCI_DEVICE_ID_VIA_8235_USB_2
, NULL
);
2170 /* p should contain the first (internal) VT6212L -- see if we have
2171 an external one by searching again */
2172 p
= pci_get_device(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8235_USB_2
, p
);
2177 if (pci_read_config_byte(dev
, 0x76, &b
) == 0) {
2179 /* Turn off PCI Bus Parking */
2180 pci_write_config_byte(dev
, 0x76, b
^ 0x40);
2182 dev_info(&dev
->dev
, "Disabling VIA CX700 PCI parking\n");
2186 if (pci_read_config_byte(dev
, 0x72, &b
) == 0) {
2188 /* Turn off PCI Master read caching */
2189 pci_write_config_byte(dev
, 0x72, 0x0);
2191 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2192 pci_write_config_byte(dev
, 0x75, 0x1);
2194 /* Disable "Read FIFO Timer" */
2195 pci_write_config_byte(dev
, 0x77, 0x0);
2197 dev_info(&dev
->dev
, "Disabling VIA CX700 PCI caching\n");
2201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, 0x324e, quirk_via_cx700_pci_parking_caching
);
2204 * If a device follows the VPD format spec, the PCI core will not read or
2205 * write past the VPD End Tag. But some vendors do not follow the VPD
2206 * format spec, so we can't tell how much data is safe to access. Devices
2207 * may behave unpredictably if we access too much. Blacklist these devices
2208 * so we don't touch VPD at all.
2210 static void quirk_blacklist_vpd(struct pci_dev
*dev
)
2214 dev_warn(&dev
->dev
, FW_BUG
"disabling VPD access (can't determine size of non-standard VPD format)\n");
2218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0060, quirk_blacklist_vpd
);
2219 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x007c, quirk_blacklist_vpd
);
2220 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0413, quirk_blacklist_vpd
);
2221 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0078, quirk_blacklist_vpd
);
2222 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0079, quirk_blacklist_vpd
);
2223 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0073, quirk_blacklist_vpd
);
2224 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x0071, quirk_blacklist_vpd
);
2225 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x005b, quirk_blacklist_vpd
);
2226 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x002f, quirk_blacklist_vpd
);
2227 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x005d, quirk_blacklist_vpd
);
2228 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC
, 0x005f, quirk_blacklist_vpd
);
2229 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, PCI_ANY_ID
,
2230 quirk_blacklist_vpd
);
2231 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC
, 0x2261, quirk_blacklist_vpd
);
2234 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
2235 * VPD end tag will hang the device. This problem was initially
2236 * observed when a vpd entry was created in sysfs
2237 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
2238 * will dump 32k of data. Reading a full 32k will cause an access
2239 * beyond the VPD end tag causing the device to hang. Once the device
2240 * is hung, the bnx2 driver will not be able to reset the device.
2241 * We believe that it is legal to read beyond the end tag and
2242 * therefore the solution is to limit the read/write length.
2244 static void quirk_brcm_570x_limit_vpd(struct pci_dev
*dev
)
2247 * Only disable the VPD capability for 5706, 5706S, 5708,
2248 * 5708S and 5709 rev. A
2250 if ((dev
->device
== PCI_DEVICE_ID_NX2_5706
) ||
2251 (dev
->device
== PCI_DEVICE_ID_NX2_5706S
) ||
2252 (dev
->device
== PCI_DEVICE_ID_NX2_5708
) ||
2253 (dev
->device
== PCI_DEVICE_ID_NX2_5708S
) ||
2254 ((dev
->device
== PCI_DEVICE_ID_NX2_5709
) &&
2255 (dev
->revision
& 0xf0) == 0x0)) {
2257 dev
->vpd
->len
= 0x80;
2261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2262 PCI_DEVICE_ID_NX2_5706
,
2263 quirk_brcm_570x_limit_vpd
);
2264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2265 PCI_DEVICE_ID_NX2_5706S
,
2266 quirk_brcm_570x_limit_vpd
);
2267 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2268 PCI_DEVICE_ID_NX2_5708
,
2269 quirk_brcm_570x_limit_vpd
);
2270 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2271 PCI_DEVICE_ID_NX2_5708S
,
2272 quirk_brcm_570x_limit_vpd
);
2273 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2274 PCI_DEVICE_ID_NX2_5709
,
2275 quirk_brcm_570x_limit_vpd
);
2276 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2277 PCI_DEVICE_ID_NX2_5709S
,
2278 quirk_brcm_570x_limit_vpd
);
2280 static void quirk_brcm_5719_limit_mrrs(struct pci_dev
*dev
)
2284 pci_read_config_dword(dev
, 0xf4, &rev
);
2286 /* Only CAP the MRRS if the device is a 5719 A0 */
2287 if (rev
== 0x05719000) {
2288 int readrq
= pcie_get_readrq(dev
);
2290 pcie_set_readrq(dev
, 2048);
2294 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM
,
2295 PCI_DEVICE_ID_TIGON3_5719
,
2296 quirk_brcm_5719_limit_mrrs
);
2298 #ifdef CONFIG_PCIE_IPROC_PLATFORM
2299 static void quirk_paxc_bridge(struct pci_dev
*pdev
)
2301 /* The PCI config space is shared with the PAXC root port and the first
2302 * Ethernet device. So, we need to workaround this by telling the PCI
2303 * code that the bridge is not an Ethernet device.
2305 if (pdev
->hdr_type
== PCI_HEADER_TYPE_BRIDGE
)
2306 pdev
->class = PCI_CLASS_BRIDGE_PCI
<< 8;
2308 /* MPSS is not being set properly (as it is currently 0). This is
2309 * because that area of the PCI config space is hard coded to zero, and
2310 * is not modifiable by firmware. Set this to 2 (e.g., 512 byte MPS)
2311 * so that the MPS can be set to the real max value.
2313 pdev
->pcie_mpss
= 2;
2315 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM
, 0x16cd, quirk_paxc_bridge
);
2316 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM
, 0x16f0, quirk_paxc_bridge
);
2319 /* Originally in EDAC sources for i82875P:
2320 * Intel tells BIOS developers to hide device 6 which
2321 * configures the overflow device access containing
2322 * the DRBs - this is where we expose device 6.
2323 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2325 static void quirk_unhide_mch_dev6(struct pci_dev
*dev
)
2329 if (pci_read_config_byte(dev
, 0xF4, ®
) == 0 && !(reg
& 0x02)) {
2330 dev_info(&dev
->dev
, "Enabling MCH 'Overflow' Device\n");
2331 pci_write_config_byte(dev
, 0xF4, reg
| 0x02);
2335 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82865_HB
,
2336 quirk_unhide_mch_dev6
);
2337 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82875_HB
,
2338 quirk_unhide_mch_dev6
);
2340 #ifdef CONFIG_TILEPRO
2342 * The Tilera TILEmpower tilepro platform needs to set the link speed
2343 * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
2344 * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
2345 * capability register of the PEX8624 PCIe switch. The switch
2346 * supports link speed auto negotiation, but falsely sets
2347 * the link speed to 5GT/s.
2349 static void quirk_tile_plx_gen1(struct pci_dev
*dev
)
2351 if (tile_plx_gen1
) {
2352 pci_write_config_dword(dev
, 0x98, 0x1);
2356 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX
, 0x8624, quirk_tile_plx_gen1
);
2357 #endif /* CONFIG_TILEPRO */
2359 #ifdef CONFIG_PCI_MSI
2360 /* Some chipsets do not support MSI. We cannot easily rely on setting
2361 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2362 * some other buses controlled by the chipset even if Linux is not
2363 * aware of it. Instead of setting the flag on all buses in the
2364 * machine, simply disable MSI globally.
2366 static void quirk_disable_all_msi(struct pci_dev
*dev
)
2369 dev_warn(&dev
->dev
, "MSI quirk detected; MSI disabled\n");
2371 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE
, quirk_disable_all_msi
);
2372 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_RS400_200
, quirk_disable_all_msi
);
2373 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_RS480
, quirk_disable_all_msi
);
2374 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_VT3336
, quirk_disable_all_msi
);
2375 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_VT3351
, quirk_disable_all_msi
);
2376 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_VT3364
, quirk_disable_all_msi
);
2377 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, PCI_DEVICE_ID_VIA_8380_0
, quirk_disable_all_msi
);
2378 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI
, 0x0761, quirk_disable_all_msi
);
2380 /* Disable MSI on chipsets that are known to not support it */
2381 static void quirk_disable_msi(struct pci_dev
*dev
)
2383 if (dev
->subordinate
) {
2384 dev_warn(&dev
->dev
, "MSI quirk detected; subordinate MSI disabled\n");
2385 dev
->subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MSI
;
2388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8131_BRIDGE
, quirk_disable_msi
);
2389 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA
, 0xa238, quirk_disable_msi
);
2390 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x5a3f, quirk_disable_msi
);
2393 * The APC bridge device in AMD 780 family northbridges has some random
2394 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2395 * we use the possible vendor/device IDs of the host bridge for the
2396 * declared quirk, and search for the APC bridge by slot number.
2398 static void quirk_amd_780_apc_msi(struct pci_dev
*host_bridge
)
2400 struct pci_dev
*apc_bridge
;
2402 apc_bridge
= pci_get_slot(host_bridge
->bus
, PCI_DEVFN(1, 0));
2404 if (apc_bridge
->device
== 0x9602)
2405 quirk_disable_msi(apc_bridge
);
2406 pci_dev_put(apc_bridge
);
2409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, 0x9600, quirk_amd_780_apc_msi
);
2410 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD
, 0x9601, quirk_amd_780_apc_msi
);
2412 /* Go through the list of Hypertransport capabilities and
2413 * return 1 if a HT MSI capability is found and enabled */
2414 static int msi_ht_cap_enabled(struct pci_dev
*dev
)
2416 int pos
, ttl
= PCI_FIND_CAP_TTL
;
2418 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_MSI_MAPPING
);
2419 while (pos
&& ttl
--) {
2422 if (pci_read_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2424 dev_info(&dev
->dev
, "Found %s HT MSI Mapping\n",
2425 flags
& HT_MSI_FLAGS_ENABLE
?
2426 "enabled" : "disabled");
2427 return (flags
& HT_MSI_FLAGS_ENABLE
) != 0;
2430 pos
= pci_find_next_ht_capability(dev
, pos
,
2431 HT_CAPTYPE_MSI_MAPPING
);
2436 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2437 static void quirk_msi_ht_cap(struct pci_dev
*dev
)
2439 if (dev
->subordinate
&& !msi_ht_cap_enabled(dev
)) {
2440 dev_warn(&dev
->dev
, "MSI quirk detected; subordinate MSI disabled\n");
2441 dev
->subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MSI
;
2444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE
,
2447 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2448 * MSI are supported if the MSI capability set in any of these mappings.
2450 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev
*dev
)
2452 struct pci_dev
*pdev
;
2454 if (!dev
->subordinate
)
2457 /* check HT MSI cap on this chipset and the root one.
2458 * a single one having MSI is enough to be sure that MSI are supported.
2460 pdev
= pci_get_slot(dev
->bus
, 0);
2463 if (!msi_ht_cap_enabled(dev
) && !msi_ht_cap_enabled(pdev
)) {
2464 dev_warn(&dev
->dev
, "MSI quirk detected; subordinate MSI disabled\n");
2465 dev
->subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MSI
;
2469 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA
, PCI_DEVICE_ID_NVIDIA_CK804_PCIE
,
2470 quirk_nvidia_ck804_msi_ht_cap
);
2472 /* Force enable MSI mapping capability on HT bridges */
2473 static void ht_enable_msi_mapping(struct pci_dev
*dev
)
2475 int pos
, ttl
= PCI_FIND_CAP_TTL
;
2477 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_MSI_MAPPING
);
2478 while (pos
&& ttl
--) {
2481 if (pci_read_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2483 dev_info(&dev
->dev
, "Enabling HT MSI Mapping\n");
2485 pci_write_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2486 flags
| HT_MSI_FLAGS_ENABLE
);
2488 pos
= pci_find_next_ht_capability(dev
, pos
,
2489 HT_CAPTYPE_MSI_MAPPING
);
2492 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS
,
2493 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB
,
2494 ht_enable_msi_mapping
);
2496 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD_8132_BRIDGE
,
2497 ht_enable_msi_mapping
);
2499 /* The P5N32-SLI motherboards from Asus have a problem with msi
2500 * for the MCP55 NIC. It is not yet determined whether the msi problem
2501 * also affects other devices. As for now, turn off msi for this device.
2503 static void nvenet_msi_disable(struct pci_dev
*dev
)
2505 const char *board_name
= dmi_get_system_info(DMI_BOARD_NAME
);
2508 (strstr(board_name
, "P5N32-SLI PREMIUM") ||
2509 strstr(board_name
, "P5N32-E SLI"))) {
2510 dev_info(&dev
->dev
, "Disabling msi for MCP55 NIC on P5N32-SLI\n");
2514 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA
,
2515 PCI_DEVICE_ID_NVIDIA_NVENET_15
,
2516 nvenet_msi_disable
);
2519 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2520 * config register. This register controls the routing of legacy
2521 * interrupts from devices that route through the MCP55. If this register
2522 * is misprogrammed, interrupts are only sent to the BSP, unlike
2523 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2524 * having this register set properly prevents kdump from booting up
2525 * properly, so let's make sure that we have it set correctly.
2526 * Note that this is an undocumented register.
2528 static void nvbridge_check_legacy_irq_routing(struct pci_dev
*dev
)
2532 if (!pci_find_capability(dev
, PCI_CAP_ID_HT
))
2535 pci_read_config_dword(dev
, 0x74, &cfg
);
2537 if (cfg
& ((1 << 2) | (1 << 15))) {
2538 printk(KERN_INFO
"Rewriting irq routing register on MCP55\n");
2539 cfg
&= ~((1 << 2) | (1 << 15));
2540 pci_write_config_dword(dev
, 0x74, cfg
);
2544 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA
,
2545 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0
,
2546 nvbridge_check_legacy_irq_routing
);
2548 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA
,
2549 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4
,
2550 nvbridge_check_legacy_irq_routing
);
2552 static int ht_check_msi_mapping(struct pci_dev
*dev
)
2554 int pos
, ttl
= PCI_FIND_CAP_TTL
;
2557 /* check if there is HT MSI cap or enabled on this device */
2558 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_MSI_MAPPING
);
2559 while (pos
&& ttl
--) {
2564 if (pci_read_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2566 if (flags
& HT_MSI_FLAGS_ENABLE
) {
2573 pos
= pci_find_next_ht_capability(dev
, pos
,
2574 HT_CAPTYPE_MSI_MAPPING
);
2580 static int host_bridge_with_leaf(struct pci_dev
*host_bridge
)
2582 struct pci_dev
*dev
;
2587 dev_no
= host_bridge
->devfn
>> 3;
2588 for (i
= dev_no
+ 1; i
< 0x20; i
++) {
2589 dev
= pci_get_slot(host_bridge
->bus
, PCI_DEVFN(i
, 0));
2593 /* found next host bridge ?*/
2594 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_SLAVE
);
2600 if (ht_check_msi_mapping(dev
)) {
2611 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2612 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2614 static int is_end_of_ht_chain(struct pci_dev
*dev
)
2620 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_SLAVE
);
2625 pci_read_config_word(dev
, pos
+ PCI_CAP_FLAGS
, &flags
);
2627 ctrl_off
= ((flags
>> 10) & 1) ?
2628 PCI_HT_CAP_SLAVE_CTRL0
: PCI_HT_CAP_SLAVE_CTRL1
;
2629 pci_read_config_word(dev
, pos
+ ctrl_off
, &ctrl
);
2631 if (ctrl
& (1 << 6))
2638 static void nv_ht_enable_msi_mapping(struct pci_dev
*dev
)
2640 struct pci_dev
*host_bridge
;
2645 dev_no
= dev
->devfn
>> 3;
2646 for (i
= dev_no
; i
>= 0; i
--) {
2647 host_bridge
= pci_get_slot(dev
->bus
, PCI_DEVFN(i
, 0));
2651 pos
= pci_find_ht_capability(host_bridge
, HT_CAPTYPE_SLAVE
);
2656 pci_dev_put(host_bridge
);
2662 /* don't enable end_device/host_bridge with leaf directly here */
2663 if (host_bridge
== dev
&& is_end_of_ht_chain(host_bridge
) &&
2664 host_bridge_with_leaf(host_bridge
))
2667 /* root did that ! */
2668 if (msi_ht_cap_enabled(host_bridge
))
2671 ht_enable_msi_mapping(dev
);
2674 pci_dev_put(host_bridge
);
2677 static void ht_disable_msi_mapping(struct pci_dev
*dev
)
2679 int pos
, ttl
= PCI_FIND_CAP_TTL
;
2681 pos
= pci_find_ht_capability(dev
, HT_CAPTYPE_MSI_MAPPING
);
2682 while (pos
&& ttl
--) {
2685 if (pci_read_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2687 dev_info(&dev
->dev
, "Disabling HT MSI Mapping\n");
2689 pci_write_config_byte(dev
, pos
+ HT_MSI_FLAGS
,
2690 flags
& ~HT_MSI_FLAGS_ENABLE
);
2692 pos
= pci_find_next_ht_capability(dev
, pos
,
2693 HT_CAPTYPE_MSI_MAPPING
);
2697 static void __nv_msi_ht_cap_quirk(struct pci_dev
*dev
, int all
)
2699 struct pci_dev
*host_bridge
;
2703 if (!pci_msi_enabled())
2706 /* check if there is HT MSI cap or enabled on this device */
2707 found
= ht_check_msi_mapping(dev
);
2714 * HT MSI mapping should be disabled on devices that are below
2715 * a non-Hypertransport host bridge. Locate the host bridge...
2717 host_bridge
= pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2718 if (host_bridge
== NULL
) {
2719 dev_warn(&dev
->dev
, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2723 pos
= pci_find_ht_capability(host_bridge
, HT_CAPTYPE_SLAVE
);
2725 /* Host bridge is to HT */
2727 /* it is not enabled, try to enable it */
2729 ht_enable_msi_mapping(dev
);
2731 nv_ht_enable_msi_mapping(dev
);
2736 /* HT MSI is not enabled */
2740 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2741 ht_disable_msi_mapping(dev
);
2744 pci_dev_put(host_bridge
);
2747 static void nv_msi_ht_cap_quirk_all(struct pci_dev
*dev
)
2749 return __nv_msi_ht_cap_quirk(dev
, 1);
2752 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev
*dev
)
2754 return __nv_msi_ht_cap_quirk(dev
, 0);
2757 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA
, PCI_ANY_ID
, nv_msi_ht_cap_quirk_leaf
);
2758 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA
, PCI_ANY_ID
, nv_msi_ht_cap_quirk_leaf
);
2760 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL
, PCI_ANY_ID
, nv_msi_ht_cap_quirk_all
);
2761 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL
, PCI_ANY_ID
, nv_msi_ht_cap_quirk_all
);
2763 static void quirk_msi_intx_disable_bug(struct pci_dev
*dev
)
2765 dev
->dev_flags
|= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG
;
2767 static void quirk_msi_intx_disable_ati_bug(struct pci_dev
*dev
)
2771 /* SB700 MSI issue will be fixed at HW level from revision A21,
2772 * we need check PCI REVISION ID of SMBus controller to get SB700
2775 p
= pci_get_device(PCI_VENDOR_ID_ATI
, PCI_DEVICE_ID_ATI_SBX00_SMBUS
,
2780 if ((p
->revision
< 0x3B) && (p
->revision
>= 0x30))
2781 dev
->dev_flags
|= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG
;
2784 static void quirk_msi_intx_disable_qca_bug(struct pci_dev
*dev
)
2786 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2787 if (dev
->revision
< 0x18) {
2788 dev_info(&dev
->dev
, "set MSI_INTX_DISABLE_BUG flag\n");
2789 dev
->dev_flags
|= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG
;
2792 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2793 PCI_DEVICE_ID_TIGON3_5780
,
2794 quirk_msi_intx_disable_bug
);
2795 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2796 PCI_DEVICE_ID_TIGON3_5780S
,
2797 quirk_msi_intx_disable_bug
);
2798 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2799 PCI_DEVICE_ID_TIGON3_5714
,
2800 quirk_msi_intx_disable_bug
);
2801 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2802 PCI_DEVICE_ID_TIGON3_5714S
,
2803 quirk_msi_intx_disable_bug
);
2804 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2805 PCI_DEVICE_ID_TIGON3_5715
,
2806 quirk_msi_intx_disable_bug
);
2807 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM
,
2808 PCI_DEVICE_ID_TIGON3_5715S
,
2809 quirk_msi_intx_disable_bug
);
2811 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4390,
2812 quirk_msi_intx_disable_ati_bug
);
2813 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4391,
2814 quirk_msi_intx_disable_ati_bug
);
2815 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4392,
2816 quirk_msi_intx_disable_ati_bug
);
2817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4393,
2818 quirk_msi_intx_disable_ati_bug
);
2819 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4394,
2820 quirk_msi_intx_disable_ati_bug
);
2822 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4373,
2823 quirk_msi_intx_disable_bug
);
2824 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4374,
2825 quirk_msi_intx_disable_bug
);
2826 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x4375,
2827 quirk_msi_intx_disable_bug
);
2829 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1062,
2830 quirk_msi_intx_disable_bug
);
2831 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1063,
2832 quirk_msi_intx_disable_bug
);
2833 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x2060,
2834 quirk_msi_intx_disable_bug
);
2835 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x2062,
2836 quirk_msi_intx_disable_bug
);
2837 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1073,
2838 quirk_msi_intx_disable_bug
);
2839 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1083,
2840 quirk_msi_intx_disable_bug
);
2841 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1090,
2842 quirk_msi_intx_disable_qca_bug
);
2843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x1091,
2844 quirk_msi_intx_disable_qca_bug
);
2845 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x10a0,
2846 quirk_msi_intx_disable_qca_bug
);
2847 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0x10a1,
2848 quirk_msi_intx_disable_qca_bug
);
2849 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC
, 0xe091,
2850 quirk_msi_intx_disable_qca_bug
);
2851 #endif /* CONFIG_PCI_MSI */
2853 /* Allow manual resource allocation for PCI hotplug bridges
2854 * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
2855 * some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
2856 * kernel fails to allocate resources when hotplug device is
2857 * inserted and PCI bus is rescanned.
2859 static void quirk_hotplug_bridge(struct pci_dev
*dev
)
2861 dev
->is_hotplug_bridge
= 1;
2864 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT
, 0x0020, quirk_hotplug_bridge
);
2867 * This is a quirk for the Ricoh MMC controller found as a part of
2868 * some mulifunction chips.
2870 * This is very similar and based on the ricoh_mmc driver written by
2871 * Philip Langdale. Thank you for these magic sequences.
2873 * These chips implement the four main memory card controllers (SD, MMC, MS, xD)
2874 * and one or both of cardbus or firewire.
2876 * It happens that they implement SD and MMC
2877 * support as separate controllers (and PCI functions). The linux SDHCI
2878 * driver supports MMC cards but the chip detects MMC cards in hardware
2879 * and directs them to the MMC controller - so the SDHCI driver never sees
2882 * To get around this, we must disable the useless MMC controller.
2883 * At that point, the SDHCI controller will start seeing them
2884 * It seems to be the case that the relevant PCI registers to deactivate the
2885 * MMC controller live on PCI function 0, which might be the cardbus controller
2886 * or the firewire controller, depending on the particular chip in question
2888 * This has to be done early, because as soon as we disable the MMC controller
2889 * other pci functions shift up one level, e.g. function #2 becomes function
2890 * #1, and this will confuse the pci core.
2893 #ifdef CONFIG_MMC_RICOH_MMC
2894 static void ricoh_mmc_fixup_rl5c476(struct pci_dev
*dev
)
2896 /* disable via cardbus interface */
2901 /* disable must be done via function #0 */
2902 if (PCI_FUNC(dev
->devfn
))
2905 pci_read_config_byte(dev
, 0xB7, &disable
);
2909 pci_read_config_byte(dev
, 0x8E, &write_enable
);
2910 pci_write_config_byte(dev
, 0x8E, 0xAA);
2911 pci_read_config_byte(dev
, 0x8D, &write_target
);
2912 pci_write_config_byte(dev
, 0x8D, 0xB7);
2913 pci_write_config_byte(dev
, 0xB7, disable
| 0x02);
2914 pci_write_config_byte(dev
, 0x8E, write_enable
);
2915 pci_write_config_byte(dev
, 0x8D, write_target
);
2917 dev_notice(&dev
->dev
, "proprietary Ricoh MMC controller disabled (via cardbus function)\n");
2918 dev_notice(&dev
->dev
, "MMC cards are now supported by standard SDHCI controller\n");
2920 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_RL5C476
, ricoh_mmc_fixup_rl5c476
);
2921 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_RL5C476
, ricoh_mmc_fixup_rl5c476
);
2923 static void ricoh_mmc_fixup_r5c832(struct pci_dev
*dev
)
2925 /* disable via firewire interface */
2929 /* disable must be done via function #0 */
2930 if (PCI_FUNC(dev
->devfn
))
2933 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
2934 * certain types of SD/MMC cards. Lowering the SD base
2935 * clock frequency from 200Mhz to 50Mhz fixes this issue.
2937 * 0x150 - SD2.0 mode enable for changing base clock
2938 * frequency to 50Mhz
2939 * 0xe1 - Base clock frequency
2940 * 0x32 - 50Mhz new clock frequency
2941 * 0xf9 - Key register for 0x150
2942 * 0xfc - key register for 0xe1
2944 if (dev
->device
== PCI_DEVICE_ID_RICOH_R5CE822
||
2945 dev
->device
== PCI_DEVICE_ID_RICOH_R5CE823
) {
2946 pci_write_config_byte(dev
, 0xf9, 0xfc);
2947 pci_write_config_byte(dev
, 0x150, 0x10);
2948 pci_write_config_byte(dev
, 0xf9, 0x00);
2949 pci_write_config_byte(dev
, 0xfc, 0x01);
2950 pci_write_config_byte(dev
, 0xe1, 0x32);
2951 pci_write_config_byte(dev
, 0xfc, 0x00);
2953 dev_notice(&dev
->dev
, "MMC controller base frequency changed to 50Mhz.\n");
2956 pci_read_config_byte(dev
, 0xCB, &disable
);
2961 pci_read_config_byte(dev
, 0xCA, &write_enable
);
2962 pci_write_config_byte(dev
, 0xCA, 0x57);
2963 pci_write_config_byte(dev
, 0xCB, disable
| 0x02);
2964 pci_write_config_byte(dev
, 0xCA, write_enable
);
2966 dev_notice(&dev
->dev
, "proprietary Ricoh MMC controller disabled (via firewire function)\n");
2967 dev_notice(&dev
->dev
, "MMC cards are now supported by standard SDHCI controller\n");
2970 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5C832
, ricoh_mmc_fixup_r5c832
);
2971 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5C832
, ricoh_mmc_fixup_r5c832
);
2972 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5CE822
, ricoh_mmc_fixup_r5c832
);
2973 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5CE822
, ricoh_mmc_fixup_r5c832
);
2974 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5CE823
, ricoh_mmc_fixup_r5c832
);
2975 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH
, PCI_DEVICE_ID_RICOH_R5CE823
, ricoh_mmc_fixup_r5c832
);
2976 #endif /*CONFIG_MMC_RICOH_MMC*/
2978 #ifdef CONFIG_DMAR_TABLE
2979 #define VTUNCERRMSK_REG 0x1ac
2980 #define VTD_MSK_SPEC_ERRORS (1 << 31)
2982 * This is a quirk for masking vt-d spec defined errors to platform error
2983 * handling logic. With out this, platforms using Intel 7500, 5500 chipsets
2984 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
2985 * on the RAS config settings of the platform) when a vt-d fault happens.
2986 * The resulting SMI caused the system to hang.
2988 * VT-d spec related errors are already handled by the VT-d OS code, so no
2989 * need to report the same error through other channels.
2991 static void vtd_mask_spec_errors(struct pci_dev
*dev
)
2995 pci_read_config_dword(dev
, VTUNCERRMSK_REG
, &word
);
2996 pci_write_config_dword(dev
, VTUNCERRMSK_REG
, word
| VTD_MSK_SPEC_ERRORS
);
2998 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, 0x342e, vtd_mask_spec_errors
);
2999 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, 0x3c28, vtd_mask_spec_errors
);
3002 static void fixup_ti816x_class(struct pci_dev
*dev
)
3004 u32
class = dev
->class;
3006 /* TI 816x devices do not have class code set when in PCIe boot mode */
3007 dev
->class = PCI_CLASS_MULTIMEDIA_VIDEO
<< 8;
3008 dev_info(&dev
->dev
, "PCI class overridden (%#08x -> %#08x)\n",
3011 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI
, 0xb800,
3012 PCI_CLASS_NOT_DEFINED
, 8, fixup_ti816x_class
);
3014 /* Some PCIe devices do not work reliably with the claimed maximum
3015 * payload size supported.
3017 static void fixup_mpss_256(struct pci_dev
*dev
)
3019 dev
->pcie_mpss
= 1; /* 256 bytes */
3021 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE
,
3022 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0
, fixup_mpss_256
);
3023 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE
,
3024 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1
, fixup_mpss_256
);
3025 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE
,
3026 PCI_DEVICE_ID_SOLARFLARE_SFC4000B
, fixup_mpss_256
);
3028 /* Intel 5000 and 5100 Memory controllers have an errata with read completion
3029 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3030 * Since there is no way of knowing what the PCIE MPS on each fabric will be
3031 * until all of the devices are discovered and buses walked, read completion
3032 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3033 * it is possible to hotplug a device with MPS of 256B.
3035 static void quirk_intel_mc_errata(struct pci_dev
*dev
)
3040 if (pcie_bus_config
== PCIE_BUS_TUNE_OFF
||
3041 pcie_bus_config
== PCIE_BUS_DEFAULT
)
3044 /* Intel errata specifies bits to change but does not say what they are.
3045 * Keeping them magical until such time as the registers and values can
3048 err
= pci_read_config_word(dev
, 0x48, &rcc
);
3050 dev_err(&dev
->dev
, "Error attempting to read the read completion coalescing register\n");
3054 if (!(rcc
& (1 << 10)))
3059 err
= pci_write_config_word(dev
, 0x48, rcc
);
3061 dev_err(&dev
->dev
, "Error attempting to write the read completion coalescing register\n");
3065 pr_info_once("Read completion coalescing disabled due to hardware errata relating to 256B MPS\n");
3067 /* Intel 5000 series memory controllers and ports 2-7 */
3068 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25c0, quirk_intel_mc_errata
);
3069 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25d0, quirk_intel_mc_errata
);
3070 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25d4, quirk_intel_mc_errata
);
3071 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25d8, quirk_intel_mc_errata
);
3072 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e2, quirk_intel_mc_errata
);
3073 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e3, quirk_intel_mc_errata
);
3074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e4, quirk_intel_mc_errata
);
3075 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e5, quirk_intel_mc_errata
);
3076 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e6, quirk_intel_mc_errata
);
3077 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25e7, quirk_intel_mc_errata
);
3078 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25f7, quirk_intel_mc_errata
);
3079 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25f8, quirk_intel_mc_errata
);
3080 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25f9, quirk_intel_mc_errata
);
3081 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x25fa, quirk_intel_mc_errata
);
3082 /* Intel 5100 series memory controllers and ports 2-7 */
3083 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65c0, quirk_intel_mc_errata
);
3084 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e2, quirk_intel_mc_errata
);
3085 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e3, quirk_intel_mc_errata
);
3086 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e4, quirk_intel_mc_errata
);
3087 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e5, quirk_intel_mc_errata
);
3088 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e6, quirk_intel_mc_errata
);
3089 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65e7, quirk_intel_mc_errata
);
3090 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65f7, quirk_intel_mc_errata
);
3091 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65f8, quirk_intel_mc_errata
);
3092 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65f9, quirk_intel_mc_errata
);
3093 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x65fa, quirk_intel_mc_errata
);
3097 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To
3098 * work around this, query the size it should be configured to by the device and
3099 * modify the resource end to correspond to this new size.
3101 static void quirk_intel_ntb(struct pci_dev
*dev
)
3106 rc
= pci_read_config_byte(dev
, 0x00D0, &val
);
3110 dev
->resource
[2].end
= dev
->resource
[2].start
+ ((u64
) 1 << val
) - 1;
3112 rc
= pci_read_config_byte(dev
, 0x00D1, &val
);
3116 dev
->resource
[4].end
= dev
->resource
[4].start
+ ((u64
) 1 << val
) - 1;
3118 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x0e08, quirk_intel_ntb
);
3119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x0e0d, quirk_intel_ntb
);
3121 static ktime_t
fixup_debug_start(struct pci_dev
*dev
,
3122 void (*fn
)(struct pci_dev
*dev
))
3124 ktime_t calltime
= 0;
3126 dev_dbg(&dev
->dev
, "calling %pF\n", fn
);
3127 if (initcall_debug
) {
3128 pr_debug("calling %pF @ %i for %s\n",
3129 fn
, task_pid_nr(current
), dev_name(&dev
->dev
));
3130 calltime
= ktime_get();
3136 static void fixup_debug_report(struct pci_dev
*dev
, ktime_t calltime
,
3137 void (*fn
)(struct pci_dev
*dev
))
3139 ktime_t delta
, rettime
;
3140 unsigned long long duration
;
3142 if (initcall_debug
) {
3143 rettime
= ktime_get();
3144 delta
= ktime_sub(rettime
, calltime
);
3145 duration
= (unsigned long long) ktime_to_ns(delta
) >> 10;
3146 pr_debug("pci fixup %pF returned after %lld usecs for %s\n",
3147 fn
, duration
, dev_name(&dev
->dev
));
3152 * Some BIOS implementations leave the Intel GPU interrupts enabled,
3153 * even though no one is handling them (f.e. i915 driver is never loaded).
3154 * Additionally the interrupt destination is not set up properly
3155 * and the interrupt ends up -somewhere-.
3157 * These spurious interrupts are "sticky" and the kernel disables
3158 * the (shared) interrupt line after 100.000+ generated interrupts.
3160 * Fix it by disabling the still enabled interrupts.
3161 * This resolves crashes often seen on monitor unplug.
3163 #define I915_DEIER_REG 0x4400c
3164 static void disable_igfx_irq(struct pci_dev
*dev
)
3166 void __iomem
*regs
= pci_iomap(dev
, 0, 0);
3168 dev_warn(&dev
->dev
, "igfx quirk: Can't iomap PCI device\n");
3172 /* Check if any interrupt line is still enabled */
3173 if (readl(regs
+ I915_DEIER_REG
) != 0) {
3174 dev_warn(&dev
->dev
, "BIOS left Intel GPU interrupts enabled; disabling\n");
3176 writel(0, regs
+ I915_DEIER_REG
);
3179 pci_iounmap(dev
, regs
);
3181 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x0102, disable_igfx_irq
);
3182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x010a, disable_igfx_irq
);
3183 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x0152, disable_igfx_irq
);
3186 * PCI devices which are on Intel chips can skip the 10ms delay
3187 * before entering D3 mode.
3189 static void quirk_remove_d3_delay(struct pci_dev
*dev
)
3193 /* C600 Series devices do not need 10ms d3_delay */
3194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x0412, quirk_remove_d3_delay
);
3195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x0c00, quirk_remove_d3_delay
);
3196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x0c0c, quirk_remove_d3_delay
);
3197 /* Lynxpoint-H PCH devices do not need 10ms d3_delay */
3198 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c02, quirk_remove_d3_delay
);
3199 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c18, quirk_remove_d3_delay
);
3200 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c1c, quirk_remove_d3_delay
);
3201 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c20, quirk_remove_d3_delay
);
3202 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c22, quirk_remove_d3_delay
);
3203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c26, quirk_remove_d3_delay
);
3204 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c2d, quirk_remove_d3_delay
);
3205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c31, quirk_remove_d3_delay
);
3206 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c3a, quirk_remove_d3_delay
);
3207 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c3d, quirk_remove_d3_delay
);
3208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x8c4e, quirk_remove_d3_delay
);
3209 /* Intel Cherrytrail devices do not need 10ms d3_delay */
3210 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2280, quirk_remove_d3_delay
);
3211 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x2298, quirk_remove_d3_delay
);
3212 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x229c, quirk_remove_d3_delay
);
3213 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22b0, quirk_remove_d3_delay
);
3214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22b5, quirk_remove_d3_delay
);
3215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22b7, quirk_remove_d3_delay
);
3216 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22b8, quirk_remove_d3_delay
);
3217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22d8, quirk_remove_d3_delay
);
3218 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x22dc, quirk_remove_d3_delay
);
3221 * Some devices may pass our check in pci_intx_mask_supported() if
3222 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3223 * support this feature.
3225 static void quirk_broken_intx_masking(struct pci_dev
*dev
)
3227 dev
->broken_intx_masking
= 1;
3229 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO
, 0x0030,
3230 quirk_broken_intx_masking
);
3231 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3232 quirk_broken_intx_masking
);
3235 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3236 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3238 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3240 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK
, 0x8169,
3241 quirk_broken_intx_masking
);
3244 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3245 * DisINTx can be set but the interrupt status bit is non-functional.
3247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1572,
3248 quirk_broken_intx_masking
);
3249 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1574,
3250 quirk_broken_intx_masking
);
3251 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1580,
3252 quirk_broken_intx_masking
);
3253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1581,
3254 quirk_broken_intx_masking
);
3255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1583,
3256 quirk_broken_intx_masking
);
3257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1584,
3258 quirk_broken_intx_masking
);
3259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1585,
3260 quirk_broken_intx_masking
);
3261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1586,
3262 quirk_broken_intx_masking
);
3263 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1587,
3264 quirk_broken_intx_masking
);
3265 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1588,
3266 quirk_broken_intx_masking
);
3267 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x1589,
3268 quirk_broken_intx_masking
);
3269 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x158a,
3270 quirk_broken_intx_masking
);
3271 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x158b,
3272 quirk_broken_intx_masking
);
3273 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x37d0,
3274 quirk_broken_intx_masking
);
3275 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x37d1,
3276 quirk_broken_intx_masking
);
3277 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, 0x37d2,
3278 quirk_broken_intx_masking
);
3280 static u16 mellanox_broken_intx_devs
[] = {
3281 PCI_DEVICE_ID_MELLANOX_HERMON_SDR
,
3282 PCI_DEVICE_ID_MELLANOX_HERMON_DDR
,
3283 PCI_DEVICE_ID_MELLANOX_HERMON_QDR
,
3284 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2
,
3285 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2
,
3286 PCI_DEVICE_ID_MELLANOX_HERMON_EN
,
3287 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2
,
3288 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN
,
3289 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2
,
3290 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2
,
3291 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2
,
3292 PCI_DEVICE_ID_MELLANOX_CONNECTX2
,
3293 PCI_DEVICE_ID_MELLANOX_CONNECTX3
,
3294 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO
,
3297 #define CONNECTX_4_CURR_MAX_MINOR 99
3298 #define CONNECTX_4_INTX_SUPPORT_MINOR 14
3301 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3302 * If so, don't mark it as broken.
3303 * FW minor > 99 means older FW version format and no INTx masking support.
3304 * FW minor < 14 means new FW version format and no INTx masking support.
3306 static void mellanox_check_broken_intx_masking(struct pci_dev
*pdev
)
3308 __be32 __iomem
*fw_ver
;
3316 for (i
= 0; i
< ARRAY_SIZE(mellanox_broken_intx_devs
); i
++) {
3317 if (pdev
->device
== mellanox_broken_intx_devs
[i
]) {
3318 pdev
->broken_intx_masking
= 1;
3323 /* Getting here means Connect-IB cards and up. Connect-IB has no INTx
3324 * support so shouldn't be checked further
3326 if (pdev
->device
== PCI_DEVICE_ID_MELLANOX_CONNECTIB
)
3329 if (pdev
->device
!= PCI_DEVICE_ID_MELLANOX_CONNECTX4
&&
3330 pdev
->device
!= PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX
)
3333 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3334 if (pci_enable_device_mem(pdev
)) {
3335 dev_warn(&pdev
->dev
, "Can't enable device memory\n");
3339 fw_ver
= ioremap(pci_resource_start(pdev
, 0), 4);
3341 dev_warn(&pdev
->dev
, "Can't map ConnectX-4 initialization segment\n");
3345 /* Reading from resource space should be 32b aligned */
3346 fw_maj_min
= ioread32be(fw_ver
);
3347 fw_sub_min
= ioread32be(fw_ver
+ 1);
3348 fw_major
= fw_maj_min
& 0xffff;
3349 fw_minor
= fw_maj_min
>> 16;
3350 fw_subminor
= fw_sub_min
& 0xffff;
3351 if (fw_minor
> CONNECTX_4_CURR_MAX_MINOR
||
3352 fw_minor
< CONNECTX_4_INTX_SUPPORT_MINOR
) {
3353 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",
3354 fw_major
, fw_minor
, fw_subminor
, pdev
->device
==
3355 PCI_DEVICE_ID_MELLANOX_CONNECTX4
? 12 : 14);
3356 pdev
->broken_intx_masking
= 1;
3362 pci_disable_device(pdev
);
3364 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX
, PCI_ANY_ID
,
3365 mellanox_check_broken_intx_masking
);
3367 static void quirk_no_bus_reset(struct pci_dev
*dev
)
3369 dev
->dev_flags
|= PCI_DEV_FLAGS_NO_BUS_RESET
;
3373 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3374 * The device will throw a Link Down error on AER-capable systems and
3375 * regardless of AER, config space of the device is never accessible again
3376 * and typically causes the system to hang or reset when access is attempted.
3377 * http://www.spinics.net/lists/linux-pci/msg34797.html
3379 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS
, 0x0030, quirk_no_bus_reset
);
3380 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS
, 0x0032, quirk_no_bus_reset
);
3381 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS
, 0x003c, quirk_no_bus_reset
);
3382 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS
, 0x0033, quirk_no_bus_reset
);
3385 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3386 * reset when used with certain child devices. After the reset, config
3387 * accesses to the child may fail.
3389 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM
, 0xa100, quirk_no_bus_reset
);
3391 static void quirk_no_pm_reset(struct pci_dev
*dev
)
3394 * We can't do a bus reset on root bus devices, but an ineffective
3395 * PM reset may be better than nothing.
3397 if (!pci_is_root_bus(dev
->bus
))
3398 dev
->dev_flags
|= PCI_DEV_FLAGS_NO_PM_RESET
;
3402 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3403 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3404 * to have no effect on the device: it retains the framebuffer contents and
3405 * monitor sync. Advertising this support makes other layers, like VFIO,
3406 * assume pci_reset_function() is viable for this device. Mark it as
3407 * unavailable to skip it when testing reset methods.
3409 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI
, PCI_ANY_ID
,
3410 PCI_CLASS_DISPLAY_VGA
, 8, quirk_no_pm_reset
);
3413 * Thunderbolt controllers with broken MSI hotplug signaling:
3414 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3415 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3417 static void quirk_thunderbolt_hotplug_msi(struct pci_dev
*pdev
)
3419 if (pdev
->is_hotplug_bridge
&&
3420 (pdev
->device
!= PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
||
3421 pdev
->revision
<= 1))
3424 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE
,
3425 quirk_thunderbolt_hotplug_msi
);
3426 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE
,
3427 quirk_thunderbolt_hotplug_msi
);
3428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_LIGHT_PEAK
,
3429 quirk_thunderbolt_hotplug_msi
);
3430 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
,
3431 quirk_thunderbolt_hotplug_msi
);
3432 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_PORT_RIDGE
,
3433 quirk_thunderbolt_hotplug_msi
);
3435 static void quirk_chelsio_extend_vpd(struct pci_dev
*dev
)
3437 int chip
= (dev
->device
& 0xf000) >> 12;
3438 int func
= (dev
->device
& 0x0f00) >> 8;
3439 int prod
= (dev
->device
& 0x00ff) >> 0;
3442 * If this is a T3-based adapter, there's a 1KB VPD area at offset
3443 * 0xc00 which contains the preferred VPD values. If this is a T4 or
3444 * later based adapter, the special VPD is at offset 0x400 for the
3445 * Physical Functions (the SR-IOV Virtual Functions have no VPD
3446 * Capabilities). The PCI VPD Access core routines will normally
3447 * compute the size of the VPD by parsing the VPD Data Structure at
3448 * offset 0x000. This will result in silent failures when attempting
3449 * to accesses these other VPD areas which are beyond those computed
3452 if (chip
== 0x0 && prod
>= 0x20)
3453 pci_set_vpd_size(dev
, 8192);
3454 else if (chip
>= 0x4 && func
< 0x8)
3455 pci_set_vpd_size(dev
, 2048);
3458 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO
, PCI_ANY_ID
,
3459 quirk_chelsio_extend_vpd
);
3463 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3465 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3466 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3467 * be present after resume if a device was plugged in before suspend.
3469 * The thunderbolt controller consists of a pcie switch with downstream
3470 * bridges leading to the NHI and to the tunnel pci bridges.
3472 * This quirk cuts power to the whole chip. Therefore we have to apply it
3473 * during suspend_noirq of the upstream bridge.
3475 * Power is automagically restored before resume. No action is needed.
3477 static void quirk_apple_poweroff_thunderbolt(struct pci_dev
*dev
)
3479 acpi_handle bridge
, SXIO
, SXFP
, SXLV
;
3481 if (!x86_apple_machine
)
3483 if (pci_pcie_type(dev
) != PCI_EXP_TYPE_UPSTREAM
)
3485 bridge
= ACPI_HANDLE(&dev
->dev
);
3489 * SXIO and SXLV are present only on machines requiring this quirk.
3490 * TB bridges in external devices might have the same device id as those
3491 * on the host, but they will not have the associated ACPI methods. This
3492 * implicitly checks that we are at the right bridge.
3494 if (ACPI_FAILURE(acpi_get_handle(bridge
, "DSB0.NHI0.SXIO", &SXIO
))
3495 || ACPI_FAILURE(acpi_get_handle(bridge
, "DSB0.NHI0.SXFP", &SXFP
))
3496 || ACPI_FAILURE(acpi_get_handle(bridge
, "DSB0.NHI0.SXLV", &SXLV
)))
3498 dev_info(&dev
->dev
, "quirk: cutting power to thunderbolt controller...\n");
3500 /* magic sequence */
3501 acpi_execute_simple_method(SXIO
, NULL
, 1);
3502 acpi_execute_simple_method(SXFP
, NULL
, 0);
3504 acpi_execute_simple_method(SXLV
, NULL
, 0);
3505 acpi_execute_simple_method(SXIO
, NULL
, 0);
3506 acpi_execute_simple_method(SXLV
, NULL
, 0);
3508 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL
,
3509 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
,
3510 quirk_apple_poweroff_thunderbolt
);
3513 * Apple: Wait for the thunderbolt controller to reestablish pci tunnels.
3515 * During suspend the thunderbolt controller is reset and all pci
3516 * tunnels are lost. The NHI driver will try to reestablish all tunnels
3517 * during resume. We have to manually wait for the NHI since there is
3518 * no parent child relationship between the NHI and the tunneled
3521 static void quirk_apple_wait_for_thunderbolt(struct pci_dev
*dev
)
3523 struct pci_dev
*sibling
= NULL
;
3524 struct pci_dev
*nhi
= NULL
;
3526 if (!x86_apple_machine
)
3528 if (pci_pcie_type(dev
) != PCI_EXP_TYPE_DOWNSTREAM
)
3531 * Find the NHI and confirm that we are a bridge on the tb host
3532 * controller and not on a tb endpoint.
3534 sibling
= pci_get_slot(dev
->bus
, 0x0);
3536 goto out
; /* we are the downstream bridge to the NHI */
3537 if (!sibling
|| !sibling
->subordinate
)
3539 nhi
= pci_get_slot(sibling
->subordinate
, 0x0);
3542 if (nhi
->vendor
!= PCI_VENDOR_ID_INTEL
3543 || (nhi
->device
!= PCI_DEVICE_ID_INTEL_LIGHT_RIDGE
&&
3544 nhi
->device
!= PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
&&
3545 nhi
->device
!= PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI
&&
3546 nhi
->device
!= PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI
)
3547 || nhi
->class != PCI_CLASS_SYSTEM_OTHER
<< 8)
3549 dev_info(&dev
->dev
, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n");
3550 device_pm_wait_for_dev(&dev
->dev
, &nhi
->dev
);
3553 pci_dev_put(sibling
);
3555 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
,
3556 PCI_DEVICE_ID_INTEL_LIGHT_RIDGE
,
3557 quirk_apple_wait_for_thunderbolt
);
3558 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
,
3559 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C
,
3560 quirk_apple_wait_for_thunderbolt
);
3561 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
,
3562 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE
,
3563 quirk_apple_wait_for_thunderbolt
);
3564 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL
,
3565 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE
,
3566 quirk_apple_wait_for_thunderbolt
);
3569 static void pci_do_fixups(struct pci_dev
*dev
, struct pci_fixup
*f
,
3570 struct pci_fixup
*end
)
3574 for (; f
< end
; f
++)
3575 if ((f
->class == (u32
) (dev
->class >> f
->class_shift
) ||
3576 f
->class == (u32
) PCI_ANY_ID
) &&
3577 (f
->vendor
== dev
->vendor
||
3578 f
->vendor
== (u16
) PCI_ANY_ID
) &&
3579 (f
->device
== dev
->device
||
3580 f
->device
== (u16
) PCI_ANY_ID
)) {
3581 calltime
= fixup_debug_start(dev
, f
->hook
);
3583 fixup_debug_report(dev
, calltime
, f
->hook
);
3587 extern struct pci_fixup __start_pci_fixups_early
[];
3588 extern struct pci_fixup __end_pci_fixups_early
[];
3589 extern struct pci_fixup __start_pci_fixups_header
[];
3590 extern struct pci_fixup __end_pci_fixups_header
[];
3591 extern struct pci_fixup __start_pci_fixups_final
[];
3592 extern struct pci_fixup __end_pci_fixups_final
[];
3593 extern struct pci_fixup __start_pci_fixups_enable
[];
3594 extern struct pci_fixup __end_pci_fixups_enable
[];
3595 extern struct pci_fixup __start_pci_fixups_resume
[];
3596 extern struct pci_fixup __end_pci_fixups_resume
[];
3597 extern struct pci_fixup __start_pci_fixups_resume_early
[];
3598 extern struct pci_fixup __end_pci_fixups_resume_early
[];
3599 extern struct pci_fixup __start_pci_fixups_suspend
[];
3600 extern struct pci_fixup __end_pci_fixups_suspend
[];
3601 extern struct pci_fixup __start_pci_fixups_suspend_late
[];
3602 extern struct pci_fixup __end_pci_fixups_suspend_late
[];
3604 static bool pci_apply_fixup_final_quirks
;
3606 void pci_fixup_device(enum pci_fixup_pass pass
, struct pci_dev
*dev
)
3608 struct pci_fixup
*start
, *end
;
3611 case pci_fixup_early
:
3612 start
= __start_pci_fixups_early
;
3613 end
= __end_pci_fixups_early
;
3616 case pci_fixup_header
:
3617 start
= __start_pci_fixups_header
;
3618 end
= __end_pci_fixups_header
;
3621 case pci_fixup_final
:
3622 if (!pci_apply_fixup_final_quirks
)
3624 start
= __start_pci_fixups_final
;
3625 end
= __end_pci_fixups_final
;
3628 case pci_fixup_enable
:
3629 start
= __start_pci_fixups_enable
;
3630 end
= __end_pci_fixups_enable
;
3633 case pci_fixup_resume
:
3634 start
= __start_pci_fixups_resume
;
3635 end
= __end_pci_fixups_resume
;
3638 case pci_fixup_resume_early
:
3639 start
= __start_pci_fixups_resume_early
;
3640 end
= __end_pci_fixups_resume_early
;
3643 case pci_fixup_suspend
:
3644 start
= __start_pci_fixups_suspend
;
3645 end
= __end_pci_fixups_suspend
;
3648 case pci_fixup_suspend_late
:
3649 start
= __start_pci_fixups_suspend_late
;
3650 end
= __end_pci_fixups_suspend_late
;
3654 /* stupid compiler warning, you would think with an enum... */
3657 pci_do_fixups(dev
, start
, end
);
3659 EXPORT_SYMBOL(pci_fixup_device
);
3662 static int __init
pci_apply_final_quirks(void)
3664 struct pci_dev
*dev
= NULL
;
3668 if (pci_cache_line_size
)
3669 printk(KERN_DEBUG
"PCI: CLS %u bytes\n",
3670 pci_cache_line_size
<< 2);
3672 pci_apply_fixup_final_quirks
= true;
3673 for_each_pci_dev(dev
) {
3674 pci_fixup_device(pci_fixup_final
, dev
);
3676 * If arch hasn't set it explicitly yet, use the CLS
3677 * value shared by all PCI devices. If there's a
3678 * mismatch, fall back to the default value.
3680 if (!pci_cache_line_size
) {
3681 pci_read_config_byte(dev
, PCI_CACHE_LINE_SIZE
, &tmp
);
3684 if (!tmp
|| cls
== tmp
)
3687 printk(KERN_DEBUG
"PCI: CLS mismatch (%u != %u), using %u bytes\n",
3689 pci_dfl_cache_line_size
<< 2);
3690 pci_cache_line_size
= pci_dfl_cache_line_size
;
3694 if (!pci_cache_line_size
) {
3695 printk(KERN_DEBUG
"PCI: CLS %u bytes, default %u\n",
3696 cls
<< 2, pci_dfl_cache_line_size
<< 2);
3697 pci_cache_line_size
= cls
? cls
: pci_dfl_cache_line_size
;
3703 fs_initcall_sync(pci_apply_final_quirks
);
3706 * Following are device-specific reset methods which can be used to
3707 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3710 static int reset_intel_82599_sfp_virtfn(struct pci_dev
*dev
, int probe
)
3713 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3715 * The 82599 supports FLR on VFs, but FLR support is reported only
3716 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3717 * Thus we must call pcie_flr() directly without first checking if it is
3725 #define SOUTH_CHICKEN2 0xc2004
3726 #define PCH_PP_STATUS 0xc7200
3727 #define PCH_PP_CONTROL 0xc7204
3728 #define MSG_CTL 0x45010
3729 #define NSDE_PWR_STATE 0xd0100
3730 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3732 static int reset_ivb_igd(struct pci_dev
*dev
, int probe
)
3734 void __iomem
*mmio_base
;
3735 unsigned long timeout
;
3741 mmio_base
= pci_iomap(dev
, 0, 0);
3745 iowrite32(0x00000002, mmio_base
+ MSG_CTL
);
3748 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3749 * driver loaded sets the right bits. However, this's a reset and
3750 * the bits have been set by i915 previously, so we clobber
3751 * SOUTH_CHICKEN2 register directly here.
3753 iowrite32(0x00000005, mmio_base
+ SOUTH_CHICKEN2
);
3755 val
= ioread32(mmio_base
+ PCH_PP_CONTROL
) & 0xfffffffe;
3756 iowrite32(val
, mmio_base
+ PCH_PP_CONTROL
);
3758 timeout
= jiffies
+ msecs_to_jiffies(IGD_OPERATION_TIMEOUT
);
3760 val
= ioread32(mmio_base
+ PCH_PP_STATUS
);
3761 if ((val
& 0xb0000000) == 0)
3762 goto reset_complete
;
3764 } while (time_before(jiffies
, timeout
));
3765 dev_warn(&dev
->dev
, "timeout during reset\n");
3768 iowrite32(0x00000002, mmio_base
+ NSDE_PWR_STATE
);
3770 pci_iounmap(dev
, mmio_base
);
3775 * Device-specific reset method for Chelsio T4-based adapters.
3777 static int reset_chelsio_generic_dev(struct pci_dev
*dev
, int probe
)
3783 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3784 * that we have no device-specific reset method.
3786 if ((dev
->device
& 0xf000) != 0x4000)
3790 * If this is the "probe" phase, return 0 indicating that we can
3791 * reset this device.
3797 * T4 can wedge if there are DMAs in flight within the chip and Bus
3798 * Master has been disabled. We need to have it on till the Function
3799 * Level Reset completes. (BUS_MASTER is disabled in
3800 * pci_reset_function()).
3802 pci_read_config_word(dev
, PCI_COMMAND
, &old_command
);
3803 pci_write_config_word(dev
, PCI_COMMAND
,
3804 old_command
| PCI_COMMAND_MASTER
);
3807 * Perform the actual device function reset, saving and restoring
3808 * configuration information around the reset.
3810 pci_save_state(dev
);
3813 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3814 * are disabled when an MSI-X interrupt message needs to be delivered.
3815 * So we briefly re-enable MSI-X interrupts for the duration of the
3816 * FLR. The pci_restore_state() below will restore the original
3819 pci_read_config_word(dev
, dev
->msix_cap
+PCI_MSIX_FLAGS
, &msix_flags
);
3820 if ((msix_flags
& PCI_MSIX_FLAGS_ENABLE
) == 0)
3821 pci_write_config_word(dev
, dev
->msix_cap
+PCI_MSIX_FLAGS
,
3823 PCI_MSIX_FLAGS_ENABLE
|
3824 PCI_MSIX_FLAGS_MASKALL
);
3829 * Restore the configuration information (BAR values, etc.) including
3830 * the original PCI Configuration Space Command word, and return
3833 pci_restore_state(dev
);
3834 pci_write_config_word(dev
, PCI_COMMAND
, old_command
);
3838 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3839 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3840 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3842 static const struct pci_dev_reset_methods pci_dev_reset_methods
[] = {
3843 { PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82599_SFP_VF
,
3844 reset_intel_82599_sfp_virtfn
},
3845 { PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_IVB_M_VGA
,
3847 { PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_IVB_M2_VGA
,
3849 { PCI_VENDOR_ID_CHELSIO
, PCI_ANY_ID
,
3850 reset_chelsio_generic_dev
},
3855 * These device-specific reset methods are here rather than in a driver
3856 * because when a host assigns a device to a guest VM, the host may need
3857 * to reset the device but probably doesn't have a driver for it.
3859 int pci_dev_specific_reset(struct pci_dev
*dev
, int probe
)
3861 const struct pci_dev_reset_methods
*i
;
3863 for (i
= pci_dev_reset_methods
; i
->reset
; i
++) {
3864 if ((i
->vendor
== dev
->vendor
||
3865 i
->vendor
== (u16
)PCI_ANY_ID
) &&
3866 (i
->device
== dev
->device
||
3867 i
->device
== (u16
)PCI_ANY_ID
))
3868 return i
->reset(dev
, probe
);
3874 static void quirk_dma_func0_alias(struct pci_dev
*dev
)
3876 if (PCI_FUNC(dev
->devfn
) != 0)
3877 pci_add_dma_alias(dev
, PCI_DEVFN(PCI_SLOT(dev
->devfn
), 0));
3881 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3883 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
3885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH
, 0xe832, quirk_dma_func0_alias
);
3886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH
, 0xe476, quirk_dma_func0_alias
);
3888 static void quirk_dma_func1_alias(struct pci_dev
*dev
)
3890 if (PCI_FUNC(dev
->devfn
) != 1)
3891 pci_add_dma_alias(dev
, PCI_DEVFN(PCI_SLOT(dev
->devfn
), 1));
3895 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
3896 * SKUs function 1 is present and is a legacy IDE controller, in other
3897 * SKUs this function is not present, making this a ghost requester.
3898 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
3900 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9120,
3901 quirk_dma_func1_alias
);
3902 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9123,
3903 quirk_dma_func1_alias
);
3904 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9128,
3905 quirk_dma_func1_alias
);
3906 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
3907 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9130,
3908 quirk_dma_func1_alias
);
3909 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
3910 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9172,
3911 quirk_dma_func1_alias
);
3912 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
3913 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x917a,
3914 quirk_dma_func1_alias
);
3915 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
3916 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9182,
3917 quirk_dma_func1_alias
);
3918 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
3919 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x91a0,
3920 quirk_dma_func1_alias
);
3921 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
3922 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9220,
3923 quirk_dma_func1_alias
);
3924 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
3925 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT
, 0x9230,
3926 quirk_dma_func1_alias
);
3927 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI
, 0x0642,
3928 quirk_dma_func1_alias
);
3929 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI
, 0x0645,
3930 quirk_dma_func1_alias
);
3931 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
3932 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON
,
3933 PCI_DEVICE_ID_JMICRON_JMB388_ESD
,
3934 quirk_dma_func1_alias
);
3935 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
3936 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
3937 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
3938 quirk_dma_func1_alias
);
3941 * Some devices DMA with the wrong devfn, not just the wrong function.
3942 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
3943 * the alias is "fixed" and independent of the device devfn.
3945 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
3946 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
3947 * single device on the secondary bus. In reality, the single exposed
3948 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
3949 * that provides a bridge to the internal bus of the I/O processor. The
3950 * controller supports private devices, which can be hidden from PCI config
3951 * space. In the case of the Adaptec 3405, a private device at 01.0
3952 * appears to be the DMA engine, which therefore needs to become a DMA
3953 * alias for the device.
3955 static const struct pci_device_id fixed_dma_alias_tbl
[] = {
3956 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2
, 0x0285,
3957 PCI_VENDOR_ID_ADAPTEC2
, 0x02bb), /* Adaptec 3405 */
3958 .driver_data
= PCI_DEVFN(1, 0) },
3959 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2
, 0x0285,
3960 PCI_VENDOR_ID_ADAPTEC2
, 0x02bc), /* Adaptec 3805 */
3961 .driver_data
= PCI_DEVFN(1, 0) },
3965 static void quirk_fixed_dma_alias(struct pci_dev
*dev
)
3967 const struct pci_device_id
*id
;
3969 id
= pci_match_id(fixed_dma_alias_tbl
, dev
);
3971 pci_add_dma_alias(dev
, id
->driver_data
);
3974 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2
, 0x0285, quirk_fixed_dma_alias
);
3977 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
3978 * using the wrong DMA alias for the device. Some of these devices can be
3979 * used as either forward or reverse bridges, so we need to test whether the
3980 * device is operating in the correct mode. We could probably apply this
3981 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
3982 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
3983 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
3985 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev
*pdev
)
3987 if (!pci_is_root_bus(pdev
->bus
) &&
3988 pdev
->hdr_type
== PCI_HEADER_TYPE_BRIDGE
&&
3989 !pci_is_pcie(pdev
) && pci_is_pcie(pdev
->bus
->self
) &&
3990 pci_pcie_type(pdev
->bus
->self
) != PCI_EXP_TYPE_PCI_BRIDGE
)
3991 pdev
->dev_flags
|= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS
;
3993 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
3994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA
, 0x1080,
3995 quirk_use_pcie_bridge_dma_alias
);
3996 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
3997 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias
);
3998 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
3999 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias
);
4000 /* ITE 8893 has the same problem as the 8892 */
4001 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias
);
4002 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4003 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias
);
4006 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4007 * be added as aliases to the DMA device in order to allow buffer access
4008 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4009 * programmed in the EEPROM.
4011 static void quirk_mic_x200_dma_alias(struct pci_dev
*pdev
)
4013 pci_add_dma_alias(pdev
, PCI_DEVFN(0x10, 0x0));
4014 pci_add_dma_alias(pdev
, PCI_DEVFN(0x11, 0x0));
4015 pci_add_dma_alias(pdev
, PCI_DEVFN(0x12, 0x3));
4017 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x2260, quirk_mic_x200_dma_alias
);
4018 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x2264, quirk_mic_x200_dma_alias
);
4021 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4022 * associated not at the root bus, but at a bridge below. This quirk avoids
4023 * generating invalid DMA aliases.
4025 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev
*pdev
)
4027 pdev
->dev_flags
|= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT
;
4029 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM
, 0x9000,
4030 quirk_bridge_cavm_thrx2_pcie_root
);
4031 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM
, 0x9084,
4032 quirk_bridge_cavm_thrx2_pcie_root
);
4035 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4036 * class code. Fix it.
4038 static void quirk_tw686x_class(struct pci_dev
*pdev
)
4040 u32
class = pdev
->class;
4042 /* Use "Multimedia controller" class */
4043 pdev
->class = (PCI_CLASS_MULTIMEDIA_OTHER
<< 8) | 0x01;
4044 dev_info(&pdev
->dev
, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4045 class, pdev
->class);
4047 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED
, 8,
4048 quirk_tw686x_class
);
4049 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED
, 8,
4050 quirk_tw686x_class
);
4051 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED
, 8,
4052 quirk_tw686x_class
);
4053 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED
, 8,
4054 quirk_tw686x_class
);
4057 * Some devices have problems with Transaction Layer Packets with the Relaxed
4058 * Ordering Attribute set. Such devices should mark themselves and other
4059 * Device Drivers should check before sending TLPs with RO set.
4061 static void quirk_relaxedordering_disable(struct pci_dev
*dev
)
4063 dev
->dev_flags
|= PCI_DEV_FLAGS_NO_RELAXED_ORDERING
;
4064 dev_info(&dev
->dev
, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4068 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4069 * Complex has a Flow Control Credit issue which can cause performance
4070 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4072 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f01, PCI_CLASS_NOT_DEFINED
, 8,
4073 quirk_relaxedordering_disable
);
4074 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f02, PCI_CLASS_NOT_DEFINED
, 8,
4075 quirk_relaxedordering_disable
);
4076 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f03, PCI_CLASS_NOT_DEFINED
, 8,
4077 quirk_relaxedordering_disable
);
4078 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f04, PCI_CLASS_NOT_DEFINED
, 8,
4079 quirk_relaxedordering_disable
);
4080 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f05, PCI_CLASS_NOT_DEFINED
, 8,
4081 quirk_relaxedordering_disable
);
4082 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f06, PCI_CLASS_NOT_DEFINED
, 8,
4083 quirk_relaxedordering_disable
);
4084 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f07, PCI_CLASS_NOT_DEFINED
, 8,
4085 quirk_relaxedordering_disable
);
4086 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f08, PCI_CLASS_NOT_DEFINED
, 8,
4087 quirk_relaxedordering_disable
);
4088 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f09, PCI_CLASS_NOT_DEFINED
, 8,
4089 quirk_relaxedordering_disable
);
4090 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f0a, PCI_CLASS_NOT_DEFINED
, 8,
4091 quirk_relaxedordering_disable
);
4092 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f0b, PCI_CLASS_NOT_DEFINED
, 8,
4093 quirk_relaxedordering_disable
);
4094 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f0c, PCI_CLASS_NOT_DEFINED
, 8,
4095 quirk_relaxedordering_disable
);
4096 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f0d, PCI_CLASS_NOT_DEFINED
, 8,
4097 quirk_relaxedordering_disable
);
4098 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x6f0e, PCI_CLASS_NOT_DEFINED
, 8,
4099 quirk_relaxedordering_disable
);
4100 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f01, PCI_CLASS_NOT_DEFINED
, 8,
4101 quirk_relaxedordering_disable
);
4102 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f02, PCI_CLASS_NOT_DEFINED
, 8,
4103 quirk_relaxedordering_disable
);
4104 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f03, PCI_CLASS_NOT_DEFINED
, 8,
4105 quirk_relaxedordering_disable
);
4106 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f04, PCI_CLASS_NOT_DEFINED
, 8,
4107 quirk_relaxedordering_disable
);
4108 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f05, PCI_CLASS_NOT_DEFINED
, 8,
4109 quirk_relaxedordering_disable
);
4110 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f06, PCI_CLASS_NOT_DEFINED
, 8,
4111 quirk_relaxedordering_disable
);
4112 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f07, PCI_CLASS_NOT_DEFINED
, 8,
4113 quirk_relaxedordering_disable
);
4114 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f08, PCI_CLASS_NOT_DEFINED
, 8,
4115 quirk_relaxedordering_disable
);
4116 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f09, PCI_CLASS_NOT_DEFINED
, 8,
4117 quirk_relaxedordering_disable
);
4118 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f0a, PCI_CLASS_NOT_DEFINED
, 8,
4119 quirk_relaxedordering_disable
);
4120 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f0b, PCI_CLASS_NOT_DEFINED
, 8,
4121 quirk_relaxedordering_disable
);
4122 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f0c, PCI_CLASS_NOT_DEFINED
, 8,
4123 quirk_relaxedordering_disable
);
4124 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f0d, PCI_CLASS_NOT_DEFINED
, 8,
4125 quirk_relaxedordering_disable
);
4126 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL
, 0x2f0e, PCI_CLASS_NOT_DEFINED
, 8,
4127 quirk_relaxedordering_disable
);
4130 * The AMD ARM A1100 (AKA "SEATTLE") SoC has a bug in its PCIe Root Complex
4131 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4132 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4133 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4134 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4135 * November 10, 2010). As a result, on this platform we can't use Relaxed
4136 * Ordering for Upstream TLPs.
4138 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD
, 0x1a00, PCI_CLASS_NOT_DEFINED
, 8,
4139 quirk_relaxedordering_disable
);
4140 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD
, 0x1a01, PCI_CLASS_NOT_DEFINED
, 8,
4141 quirk_relaxedordering_disable
);
4142 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD
, 0x1a02, PCI_CLASS_NOT_DEFINED
, 8,
4143 quirk_relaxedordering_disable
);
4146 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4147 * values for the Attribute as were supplied in the header of the
4148 * corresponding Request, except as explicitly allowed when IDO is used."
4150 * If a non-compliant device generates a completion with a different
4151 * attribute than the request, the receiver may accept it (which itself
4152 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4153 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4154 * device access timeout.
4156 * If the non-compliant device generates completions with zero attributes
4157 * (instead of copying the attributes from the request), we can work around
4158 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4159 * upstream devices so they always generate requests with zero attributes.
4161 * This affects other devices under the same Root Port, but since these
4162 * attributes are performance hints, there should be no functional problem.
4164 * Note that Configuration Space accesses are never supposed to have TLP
4165 * Attributes, so we're safe waiting till after any Configuration Space
4166 * accesses to do the Root Port fixup.
4168 static void quirk_disable_root_port_attributes(struct pci_dev
*pdev
)
4170 struct pci_dev
*root_port
= pci_find_pcie_root_port(pdev
);
4173 dev_warn(&pdev
->dev
, "PCIe Completion erratum may cause device errors\n");
4177 dev_info(&root_port
->dev
, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4178 dev_name(&pdev
->dev
));
4179 pcie_capability_clear_and_set_word(root_port
, PCI_EXP_DEVCTL
,
4180 PCI_EXP_DEVCTL_RELAX_EN
|
4181 PCI_EXP_DEVCTL_NOSNOOP_EN
, 0);
4185 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4186 * Completion it generates.
4188 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev
*pdev
)
4191 * This mask/compare operation selects for Physical Function 4 on a
4192 * T5. We only need to fix up the Root Port once for any of the
4193 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4194 * 0x54xx so we use that one,
4196 if ((pdev
->device
& 0xff00) == 0x5400)
4197 quirk_disable_root_port_attributes(pdev
);
4199 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO
, PCI_ANY_ID
,
4200 quirk_chelsio_T5_disable_root_port_attributes
);
4203 * AMD has indicated that the devices below do not support peer-to-peer
4204 * in any system where they are found in the southbridge with an AMD
4205 * IOMMU in the system. Multifunction devices that do not support
4206 * peer-to-peer between functions can claim to support a subset of ACS.
4207 * Such devices effectively enable request redirect (RR) and completion
4208 * redirect (CR) since all transactions are redirected to the upstream
4211 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
4212 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
4213 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
4215 * 1002:4385 SBx00 SMBus Controller
4216 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4217 * 1002:4383 SBx00 Azalia (Intel HDA)
4218 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4219 * 1002:4384 SBx00 PCI to PCI Bridge
4220 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4222 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4224 * 1022:780f [AMD] FCH PCI Bridge
4225 * 1022:7809 [AMD] FCH USB OHCI Controller
4227 static int pci_quirk_amd_sb_acs(struct pci_dev
*dev
, u16 acs_flags
)
4230 struct acpi_table_header
*header
= NULL
;
4233 /* Targeting multifunction devices on the SB (appears on root bus) */
4234 if (!dev
->multifunction
|| !pci_is_root_bus(dev
->bus
))
4237 /* The IVRS table describes the AMD IOMMU */
4238 status
= acpi_get_table("IVRS", 0, &header
);
4239 if (ACPI_FAILURE(status
))
4242 /* Filter out flags not applicable to multifunction */
4243 acs_flags
&= (PCI_ACS_RR
| PCI_ACS_CR
| PCI_ACS_EC
| PCI_ACS_DT
);
4245 return acs_flags
& ~(PCI_ACS_RR
| PCI_ACS_CR
) ? 0 : 1;
4251 static bool pci_quirk_cavium_acs_match(struct pci_dev
*dev
)
4254 * Effectively selects all downstream ports for whole ThunderX 1
4255 * family by 0xf800 mask (which represents 8 SoCs), while the lower
4256 * bits of device ID are used to indicate which subdevice is used
4259 return (pci_is_pcie(dev
) &&
4260 (pci_pcie_type(dev
) == PCI_EXP_TYPE_ROOT_PORT
) &&
4261 ((dev
->device
& 0xf800) == 0xa000));
4264 static int pci_quirk_cavium_acs(struct pci_dev
*dev
, u16 acs_flags
)
4267 * Cavium root ports don't advertise an ACS capability. However,
4268 * the RTL internally implements similar protection as if ACS had
4269 * Request Redirection, Completion Redirection, Source Validation,
4270 * and Upstream Forwarding features enabled. Assert that the
4271 * hardware implements and enables equivalent ACS functionality for
4274 acs_flags
&= ~(PCI_ACS_RR
| PCI_ACS_CR
| PCI_ACS_SV
| PCI_ACS_UF
);
4276 if (!pci_quirk_cavium_acs_match(dev
))
4279 return acs_flags
? 0 : 1;
4282 static int pci_quirk_xgene_acs(struct pci_dev
*dev
, u16 acs_flags
)
4285 * X-Gene root matching this quirk do not allow peer-to-peer
4286 * transactions with others, allowing masking out these bits as if they
4287 * were unimplemented in the ACS capability.
4289 acs_flags
&= ~(PCI_ACS_SV
| PCI_ACS_RR
| PCI_ACS_CR
| PCI_ACS_UF
);
4291 return acs_flags
? 0 : 1;
4295 * Many Intel PCH root ports do provide ACS-like features to disable peer
4296 * transactions and validate bus numbers in requests, but do not provide an
4297 * actual PCIe ACS capability. This is the list of device IDs known to fall
4298 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4300 static const u16 pci_quirk_intel_pch_acs_ids
[] = {
4302 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4303 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4304 /* Cougarpoint PCH */
4305 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4306 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4307 /* Pantherpoint PCH */
4308 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4309 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4310 /* Lynxpoint-H PCH */
4311 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4312 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4313 /* Lynxpoint-LP PCH */
4314 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4315 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4317 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4318 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4319 /* Patsburg (X79) PCH */
4320 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4321 /* Wellsburg (X99) PCH */
4322 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4323 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4324 /* Lynx Point (9 series) PCH */
4325 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4328 static bool pci_quirk_intel_pch_acs_match(struct pci_dev
*dev
)
4332 /* Filter out a few obvious non-matches first */
4333 if (!pci_is_pcie(dev
) || pci_pcie_type(dev
) != PCI_EXP_TYPE_ROOT_PORT
)
4336 for (i
= 0; i
< ARRAY_SIZE(pci_quirk_intel_pch_acs_ids
); i
++)
4337 if (pci_quirk_intel_pch_acs_ids
[i
] == dev
->device
)
4343 #define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
4345 static int pci_quirk_intel_pch_acs(struct pci_dev
*dev
, u16 acs_flags
)
4347 u16 flags
= dev
->dev_flags
& PCI_DEV_FLAGS_ACS_ENABLED_QUIRK
?
4348 INTEL_PCH_ACS_FLAGS
: 0;
4350 if (!pci_quirk_intel_pch_acs_match(dev
))
4353 return acs_flags
& ~flags
? 0 : 1;
4357 * These QCOM root ports do provide ACS-like features to disable peer
4358 * transactions and validate bus numbers in requests, but do not provide an
4359 * actual PCIe ACS capability. Hardware supports source validation but it
4360 * will report the issue as Completer Abort instead of ACS Violation.
4361 * Hardware doesn't support peer-to-peer and each root port is a root
4362 * complex with unique segment numbers. It is not possible for one root
4363 * port to pass traffic to another root port. All PCIe transactions are
4364 * terminated inside the root port.
4366 static int pci_quirk_qcom_rp_acs(struct pci_dev
*dev
, u16 acs_flags
)
4368 u16 flags
= (PCI_ACS_RR
| PCI_ACS_CR
| PCI_ACS_UF
| PCI_ACS_SV
);
4369 int ret
= acs_flags
& ~flags
? 0 : 1;
4371 dev_info(&dev
->dev
, "Using QCOM ACS Quirk (%d)\n", ret
);
4377 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4378 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4379 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4380 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4381 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4382 * control register is at offset 8 instead of 6 and we should probably use
4383 * dword accesses to them. This applies to the following PCI Device IDs, as
4384 * found in volume 1 of the datasheet[2]:
4386 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4387 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4389 * N.B. This doesn't fix what lspci shows.
4391 * The 100 series chipset specification update includes this as errata #23[3].
4393 * The 200 series chipset (Union Point) has the same bug according to the
4394 * specification update (Intel 200 Series Chipset Family Platform Controller
4395 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4396 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4399 * 0xa290-0xa29f PCI Express Root port #{0-16}
4400 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4402 * [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4403 * [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4404 * [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4405 * [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4406 * [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4408 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev
*dev
)
4410 if (!pci_is_pcie(dev
) || pci_pcie_type(dev
) != PCI_EXP_TYPE_ROOT_PORT
)
4413 switch (dev
->device
) {
4414 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4415 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4422 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4424 static int pci_quirk_intel_spt_pch_acs(struct pci_dev
*dev
, u16 acs_flags
)
4429 if (!pci_quirk_intel_spt_pch_acs_match(dev
))
4432 pos
= pci_find_ext_capability(dev
, PCI_EXT_CAP_ID_ACS
);
4436 /* see pci_acs_flags_enabled() */
4437 pci_read_config_dword(dev
, pos
+ PCI_ACS_CAP
, &cap
);
4438 acs_flags
&= (cap
| PCI_ACS_EC
);
4440 pci_read_config_dword(dev
, pos
+ INTEL_SPT_ACS_CTRL
, &ctrl
);
4442 return acs_flags
& ~ctrl
? 0 : 1;
4445 static int pci_quirk_mf_endpoint_acs(struct pci_dev
*dev
, u16 acs_flags
)
4448 * SV, TB, and UF are not relevant to multifunction endpoints.
4450 * Multifunction devices are only required to implement RR, CR, and DT
4451 * in their ACS capability if they support peer-to-peer transactions.
4452 * Devices matching this quirk have been verified by the vendor to not
4453 * perform peer-to-peer with other functions, allowing us to mask out
4454 * these bits as if they were unimplemented in the ACS capability.
4456 acs_flags
&= ~(PCI_ACS_SV
| PCI_ACS_TB
| PCI_ACS_RR
|
4457 PCI_ACS_CR
| PCI_ACS_UF
| PCI_ACS_DT
);
4459 return acs_flags
? 0 : 1;
4462 static const struct pci_dev_acs_enabled
{
4465 int (*acs_enabled
)(struct pci_dev
*dev
, u16 acs_flags
);
4466 } pci_dev_acs_enabled
[] = {
4467 { PCI_VENDOR_ID_ATI
, 0x4385, pci_quirk_amd_sb_acs
},
4468 { PCI_VENDOR_ID_ATI
, 0x439c, pci_quirk_amd_sb_acs
},
4469 { PCI_VENDOR_ID_ATI
, 0x4383, pci_quirk_amd_sb_acs
},
4470 { PCI_VENDOR_ID_ATI
, 0x439d, pci_quirk_amd_sb_acs
},
4471 { PCI_VENDOR_ID_ATI
, 0x4384, pci_quirk_amd_sb_acs
},
4472 { PCI_VENDOR_ID_ATI
, 0x4399, pci_quirk_amd_sb_acs
},
4473 { PCI_VENDOR_ID_AMD
, 0x780f, pci_quirk_amd_sb_acs
},
4474 { PCI_VENDOR_ID_AMD
, 0x7809, pci_quirk_amd_sb_acs
},
4475 { PCI_VENDOR_ID_SOLARFLARE
, 0x0903, pci_quirk_mf_endpoint_acs
},
4476 { PCI_VENDOR_ID_SOLARFLARE
, 0x0923, pci_quirk_mf_endpoint_acs
},
4477 { PCI_VENDOR_ID_SOLARFLARE
, 0x0A03, pci_quirk_mf_endpoint_acs
},
4478 { PCI_VENDOR_ID_INTEL
, 0x10C6, pci_quirk_mf_endpoint_acs
},
4479 { PCI_VENDOR_ID_INTEL
, 0x10DB, pci_quirk_mf_endpoint_acs
},
4480 { PCI_VENDOR_ID_INTEL
, 0x10DD, pci_quirk_mf_endpoint_acs
},
4481 { PCI_VENDOR_ID_INTEL
, 0x10E1, pci_quirk_mf_endpoint_acs
},
4482 { PCI_VENDOR_ID_INTEL
, 0x10F1, pci_quirk_mf_endpoint_acs
},
4483 { PCI_VENDOR_ID_INTEL
, 0x10F7, pci_quirk_mf_endpoint_acs
},
4484 { PCI_VENDOR_ID_INTEL
, 0x10F8, pci_quirk_mf_endpoint_acs
},
4485 { PCI_VENDOR_ID_INTEL
, 0x10F9, pci_quirk_mf_endpoint_acs
},
4486 { PCI_VENDOR_ID_INTEL
, 0x10FA, pci_quirk_mf_endpoint_acs
},
4487 { PCI_VENDOR_ID_INTEL
, 0x10FB, pci_quirk_mf_endpoint_acs
},
4488 { PCI_VENDOR_ID_INTEL
, 0x10FC, pci_quirk_mf_endpoint_acs
},
4489 { PCI_VENDOR_ID_INTEL
, 0x1507, pci_quirk_mf_endpoint_acs
},
4490 { PCI_VENDOR_ID_INTEL
, 0x1514, pci_quirk_mf_endpoint_acs
},
4491 { PCI_VENDOR_ID_INTEL
, 0x151C, pci_quirk_mf_endpoint_acs
},
4492 { PCI_VENDOR_ID_INTEL
, 0x1529, pci_quirk_mf_endpoint_acs
},
4493 { PCI_VENDOR_ID_INTEL
, 0x152A, pci_quirk_mf_endpoint_acs
},
4494 { PCI_VENDOR_ID_INTEL
, 0x154D, pci_quirk_mf_endpoint_acs
},
4495 { PCI_VENDOR_ID_INTEL
, 0x154F, pci_quirk_mf_endpoint_acs
},
4496 { PCI_VENDOR_ID_INTEL
, 0x1551, pci_quirk_mf_endpoint_acs
},
4497 { PCI_VENDOR_ID_INTEL
, 0x1558, pci_quirk_mf_endpoint_acs
},
4499 { PCI_VENDOR_ID_INTEL
, 0x1509, pci_quirk_mf_endpoint_acs
},
4500 { PCI_VENDOR_ID_INTEL
, 0x150E, pci_quirk_mf_endpoint_acs
},
4501 { PCI_VENDOR_ID_INTEL
, 0x150F, pci_quirk_mf_endpoint_acs
},
4502 { PCI_VENDOR_ID_INTEL
, 0x1510, pci_quirk_mf_endpoint_acs
},
4503 { PCI_VENDOR_ID_INTEL
, 0x1511, pci_quirk_mf_endpoint_acs
},
4504 { PCI_VENDOR_ID_INTEL
, 0x1516, pci_quirk_mf_endpoint_acs
},
4505 { PCI_VENDOR_ID_INTEL
, 0x1527, pci_quirk_mf_endpoint_acs
},
4507 { PCI_VENDOR_ID_INTEL
, 0x10C9, pci_quirk_mf_endpoint_acs
},
4508 { PCI_VENDOR_ID_INTEL
, 0x10E6, pci_quirk_mf_endpoint_acs
},
4509 { PCI_VENDOR_ID_INTEL
, 0x10E7, pci_quirk_mf_endpoint_acs
},
4510 { PCI_VENDOR_ID_INTEL
, 0x10E8, pci_quirk_mf_endpoint_acs
},
4511 { PCI_VENDOR_ID_INTEL
, 0x150A, pci_quirk_mf_endpoint_acs
},
4512 { PCI_VENDOR_ID_INTEL
, 0x150D, pci_quirk_mf_endpoint_acs
},
4513 { PCI_VENDOR_ID_INTEL
, 0x1518, pci_quirk_mf_endpoint_acs
},
4514 { PCI_VENDOR_ID_INTEL
, 0x1526, pci_quirk_mf_endpoint_acs
},
4516 { PCI_VENDOR_ID_INTEL
, 0x10A7, pci_quirk_mf_endpoint_acs
},
4517 { PCI_VENDOR_ID_INTEL
, 0x10A9, pci_quirk_mf_endpoint_acs
},
4518 { PCI_VENDOR_ID_INTEL
, 0x10D6, pci_quirk_mf_endpoint_acs
},
4520 { PCI_VENDOR_ID_INTEL
, 0x1521, pci_quirk_mf_endpoint_acs
},
4521 { PCI_VENDOR_ID_INTEL
, 0x1522, pci_quirk_mf_endpoint_acs
},
4522 { PCI_VENDOR_ID_INTEL
, 0x1523, pci_quirk_mf_endpoint_acs
},
4523 { PCI_VENDOR_ID_INTEL
, 0x1524, pci_quirk_mf_endpoint_acs
},
4524 /* 82571 (Quads omitted due to non-ACS switch) */
4525 { PCI_VENDOR_ID_INTEL
, 0x105E, pci_quirk_mf_endpoint_acs
},
4526 { PCI_VENDOR_ID_INTEL
, 0x105F, pci_quirk_mf_endpoint_acs
},
4527 { PCI_VENDOR_ID_INTEL
, 0x1060, pci_quirk_mf_endpoint_acs
},
4528 { PCI_VENDOR_ID_INTEL
, 0x10D9, pci_quirk_mf_endpoint_acs
},
4530 { PCI_VENDOR_ID_INTEL
, 0x15b7, pci_quirk_mf_endpoint_acs
},
4531 { PCI_VENDOR_ID_INTEL
, 0x15b8, pci_quirk_mf_endpoint_acs
},
4532 /* QCOM QDF2xxx root ports */
4533 { 0x17cb, 0x400, pci_quirk_qcom_rp_acs
},
4534 { 0x17cb, 0x401, pci_quirk_qcom_rp_acs
},
4535 /* Intel PCH root ports */
4536 { PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
, pci_quirk_intel_pch_acs
},
4537 { PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
, pci_quirk_intel_spt_pch_acs
},
4538 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs
}, /* Emulex BE3-R */
4539 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs
}, /* Emulex Skyhawk-R */
4540 /* Cavium ThunderX */
4541 { PCI_VENDOR_ID_CAVIUM
, PCI_ANY_ID
, pci_quirk_cavium_acs
},
4543 { PCI_VENDOR_ID_AMCC
, 0xE004, pci_quirk_xgene_acs
},
4547 int pci_dev_specific_acs_enabled(struct pci_dev
*dev
, u16 acs_flags
)
4549 const struct pci_dev_acs_enabled
*i
;
4553 * Allow devices that do not expose standard PCIe ACS capabilities
4554 * or control to indicate their support here. Multi-function express
4555 * devices which do not allow internal peer-to-peer between functions,
4556 * but do not implement PCIe ACS may wish to return true here.
4558 for (i
= pci_dev_acs_enabled
; i
->acs_enabled
; i
++) {
4559 if ((i
->vendor
== dev
->vendor
||
4560 i
->vendor
== (u16
)PCI_ANY_ID
) &&
4561 (i
->device
== dev
->device
||
4562 i
->device
== (u16
)PCI_ANY_ID
)) {
4563 ret
= i
->acs_enabled(dev
, acs_flags
);
4572 /* Config space offset of Root Complex Base Address register */
4573 #define INTEL_LPC_RCBA_REG 0xf0
4574 /* 31:14 RCBA address */
4575 #define INTEL_LPC_RCBA_MASK 0xffffc000
4577 #define INTEL_LPC_RCBA_ENABLE (1 << 0)
4579 /* Backbone Scratch Pad Register */
4580 #define INTEL_BSPR_REG 0x1104
4581 /* Backbone Peer Non-Posted Disable */
4582 #define INTEL_BSPR_REG_BPNPD (1 << 8)
4583 /* Backbone Peer Posted Disable */
4584 #define INTEL_BSPR_REG_BPPD (1 << 9)
4586 /* Upstream Peer Decode Configuration Register */
4587 #define INTEL_UPDCR_REG 0x1114
4588 /* 5:0 Peer Decode Enable bits */
4589 #define INTEL_UPDCR_REG_MASK 0x3f
4591 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev
*dev
)
4593 u32 rcba
, bspr
, updcr
;
4594 void __iomem
*rcba_mem
;
4597 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4598 * are D28:F* and therefore get probed before LPC, thus we can't
4599 * use pci_get_slot/pci_read_config_dword here.
4601 pci_bus_read_config_dword(dev
->bus
, PCI_DEVFN(31, 0),
4602 INTEL_LPC_RCBA_REG
, &rcba
);
4603 if (!(rcba
& INTEL_LPC_RCBA_ENABLE
))
4606 rcba_mem
= ioremap_nocache(rcba
& INTEL_LPC_RCBA_MASK
,
4607 PAGE_ALIGN(INTEL_UPDCR_REG
));
4612 * The BSPR can disallow peer cycles, but it's set by soft strap and
4613 * therefore read-only. If both posted and non-posted peer cycles are
4614 * disallowed, we're ok. If either are allowed, then we need to use
4615 * the UPDCR to disable peer decodes for each port. This provides the
4616 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
4618 bspr
= readl(rcba_mem
+ INTEL_BSPR_REG
);
4619 bspr
&= INTEL_BSPR_REG_BPNPD
| INTEL_BSPR_REG_BPPD
;
4620 if (bspr
!= (INTEL_BSPR_REG_BPNPD
| INTEL_BSPR_REG_BPPD
)) {
4621 updcr
= readl(rcba_mem
+ INTEL_UPDCR_REG
);
4622 if (updcr
& INTEL_UPDCR_REG_MASK
) {
4623 dev_info(&dev
->dev
, "Disabling UPDCR peer decodes\n");
4624 updcr
&= ~INTEL_UPDCR_REG_MASK
;
4625 writel(updcr
, rcba_mem
+ INTEL_UPDCR_REG
);
4633 /* Miscellaneous Port Configuration register */
4634 #define INTEL_MPC_REG 0xd8
4635 /* MPC: Invalid Receive Bus Number Check Enable */
4636 #define INTEL_MPC_REG_IRBNCE (1 << 26)
4638 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev
*dev
)
4643 * When enabled, the IRBNCE bit of the MPC register enables the
4644 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
4645 * ensures that requester IDs fall within the bus number range
4646 * of the bridge. Enable if not already.
4648 pci_read_config_dword(dev
, INTEL_MPC_REG
, &mpc
);
4649 if (!(mpc
& INTEL_MPC_REG_IRBNCE
)) {
4650 dev_info(&dev
->dev
, "Enabling MPC IRBNCE\n");
4651 mpc
|= INTEL_MPC_REG_IRBNCE
;
4652 pci_write_config_word(dev
, INTEL_MPC_REG
, mpc
);
4656 static int pci_quirk_enable_intel_pch_acs(struct pci_dev
*dev
)
4658 if (!pci_quirk_intel_pch_acs_match(dev
))
4661 if (pci_quirk_enable_intel_lpc_acs(dev
)) {
4662 dev_warn(&dev
->dev
, "Failed to enable Intel PCH ACS quirk\n");
4666 pci_quirk_enable_intel_rp_mpc_acs(dev
);
4668 dev
->dev_flags
|= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK
;
4670 dev_info(&dev
->dev
, "Intel PCH root port ACS workaround enabled\n");
4675 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev
*dev
)
4680 if (!pci_quirk_intel_spt_pch_acs_match(dev
))
4683 pos
= pci_find_ext_capability(dev
, PCI_EXT_CAP_ID_ACS
);
4687 pci_read_config_dword(dev
, pos
+ PCI_ACS_CAP
, &cap
);
4688 pci_read_config_dword(dev
, pos
+ INTEL_SPT_ACS_CTRL
, &ctrl
);
4690 ctrl
|= (cap
& PCI_ACS_SV
);
4691 ctrl
|= (cap
& PCI_ACS_RR
);
4692 ctrl
|= (cap
& PCI_ACS_CR
);
4693 ctrl
|= (cap
& PCI_ACS_UF
);
4695 pci_write_config_dword(dev
, pos
+ INTEL_SPT_ACS_CTRL
, ctrl
);
4697 dev_info(&dev
->dev
, "Intel SPT PCH root port ACS workaround enabled\n");
4702 static const struct pci_dev_enable_acs
{
4705 int (*enable_acs
)(struct pci_dev
*dev
);
4706 } pci_dev_enable_acs
[] = {
4707 { PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
, pci_quirk_enable_intel_pch_acs
},
4708 { PCI_VENDOR_ID_INTEL
, PCI_ANY_ID
, pci_quirk_enable_intel_spt_pch_acs
},
4712 int pci_dev_specific_enable_acs(struct pci_dev
*dev
)
4714 const struct pci_dev_enable_acs
*i
;
4717 for (i
= pci_dev_enable_acs
; i
->enable_acs
; i
++) {
4718 if ((i
->vendor
== dev
->vendor
||
4719 i
->vendor
== (u16
)PCI_ANY_ID
) &&
4720 (i
->device
== dev
->device
||
4721 i
->device
== (u16
)PCI_ANY_ID
)) {
4722 ret
= i
->enable_acs(dev
);
4732 * The PCI capabilities list for Intel DH895xCC VFs (device id 0x0443) with
4733 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
4734 * Next Capability pointer in the MSI Capability Structure should point to
4735 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
4738 static void quirk_intel_qat_vf_cap(struct pci_dev
*pdev
)
4743 struct pci_cap_saved_state
*state
;
4745 /* Bail if the hardware bug is fixed */
4746 if (pdev
->pcie_cap
|| pci_find_capability(pdev
, PCI_CAP_ID_EXP
))
4749 /* Bail if MSI Capability Structure is not found for some reason */
4750 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSI
);
4755 * Bail if Next Capability pointer in the MSI Capability Structure
4756 * is not the expected incorrect 0x00.
4758 pci_read_config_byte(pdev
, pos
+ 1, &next_cap
);
4763 * PCIe Capability Structure is expected to be at 0x50 and should
4764 * terminate the list (Next Capability pointer is 0x00). Verify
4765 * Capability Id and Next Capability pointer is as expected.
4766 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
4767 * to correctly set kernel data structures which have already been
4768 * set incorrectly due to the hardware bug.
4771 pci_read_config_word(pdev
, pos
, ®16
);
4772 if (reg16
== (0x0000 | PCI_CAP_ID_EXP
)) {
4774 #ifndef PCI_EXP_SAVE_REGS
4775 #define PCI_EXP_SAVE_REGS 7
4777 int size
= PCI_EXP_SAVE_REGS
* sizeof(u16
);
4779 pdev
->pcie_cap
= pos
;
4780 pci_read_config_word(pdev
, pos
+ PCI_EXP_FLAGS
, ®16
);
4781 pdev
->pcie_flags_reg
= reg16
;
4782 pci_read_config_word(pdev
, pos
+ PCI_EXP_DEVCAP
, ®16
);
4783 pdev
->pcie_mpss
= reg16
& PCI_EXP_DEVCAP_PAYLOAD
;
4785 pdev
->cfg_size
= PCI_CFG_SPACE_EXP_SIZE
;
4786 if (pci_read_config_dword(pdev
, PCI_CFG_SPACE_SIZE
, &status
) !=
4787 PCIBIOS_SUCCESSFUL
|| (status
== 0xffffffff))
4788 pdev
->cfg_size
= PCI_CFG_SPACE_SIZE
;
4790 if (pci_find_saved_cap(pdev
, PCI_CAP_ID_EXP
))
4796 state
= kzalloc(sizeof(*state
) + size
, GFP_KERNEL
);
4800 state
->cap
.cap_nr
= PCI_CAP_ID_EXP
;
4801 state
->cap
.cap_extended
= 0;
4802 state
->cap
.size
= size
;
4803 cap
= (u16
*)&state
->cap
.data
[0];
4804 pcie_capability_read_word(pdev
, PCI_EXP_DEVCTL
, &cap
[i
++]);
4805 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &cap
[i
++]);
4806 pcie_capability_read_word(pdev
, PCI_EXP_SLTCTL
, &cap
[i
++]);
4807 pcie_capability_read_word(pdev
, PCI_EXP_RTCTL
, &cap
[i
++]);
4808 pcie_capability_read_word(pdev
, PCI_EXP_DEVCTL2
, &cap
[i
++]);
4809 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL2
, &cap
[i
++]);
4810 pcie_capability_read_word(pdev
, PCI_EXP_SLTCTL2
, &cap
[i
++]);
4811 hlist_add_head(&state
->next
, &pdev
->saved_cap_space
);
4814 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, 0x443, quirk_intel_qat_vf_cap
);
4816 /* FLR may cause some 82579 devices to hang. */
4817 static void quirk_intel_no_flr(struct pci_dev
*dev
)
4819 dev
->dev_flags
|= PCI_DEV_FLAGS_NO_FLR_RESET
;
4821 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, 0x1502, quirk_intel_no_flr
);
4822 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL
, 0x1503, quirk_intel_no_flr
);
4824 static void quirk_intel_th_rtit_bar(struct pci_dev
*dev
)
4826 struct resource
*r
= &dev
->resource
[4];
4830 * Denverton reports 2k of RTIT_BAR (resource 4), which can't be
4831 * right given the 16 threads. When Intel TH gets enabled, the
4832 * actual resource overlaps the XHCI MMIO space and causes it
4834 * We're not really using RTIT_BAR at all at the moment, so it's
4835 * a safe choice to disable this resource.
4837 if (r
->end
== r
->start
+ 0x7ff) {
4843 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL
, 0x19e1, quirk_intel_th_rtit_bar
);
4845 static void quirk_no_ext_tags(struct pci_dev
*pdev
)
4847 struct pci_host_bridge
*bridge
= pci_find_host_bridge(pdev
->bus
);
4852 bridge
->no_ext_tags
= 1;
4853 dev_info(&pdev
->dev
, "disabling Extended Tags (this device can't handle them)\n");
4855 pci_walk_bus(bridge
->bus
, pci_configure_extended_tags
, NULL
);
4857 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0132, quirk_no_ext_tags
);
4858 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0140, quirk_no_ext_tags
);
4859 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0141, quirk_no_ext_tags
);
4860 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0142, quirk_no_ext_tags
);
4861 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0144, quirk_no_ext_tags
);
4862 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0420, quirk_no_ext_tags
);
4863 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS
, 0x0422, quirk_no_ext_tags
);
4865 #ifdef CONFIG_PCI_ATS
4867 * Some devices have a broken ATS implementation causing IOMMU stalls.
4868 * Don't use ATS for those devices.
4870 static void quirk_no_ats(struct pci_dev
*pdev
)
4872 dev_info(&pdev
->dev
, "disabling ATS (broken on this device)\n");
4876 /* AMD Stoney platform GPU */
4877 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI
, 0x98e4, quirk_no_ats
);
4878 #endif /* CONFIG_PCI_ATS */
4880 /* Freescale PCIe doesn't support MSI in RC mode */
4881 static void quirk_fsl_no_msi(struct pci_dev
*pdev
)
4883 if (pci_pcie_type(pdev
) == PCI_EXP_TYPE_ROOT_PORT
)
4886 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE
, PCI_ANY_ID
, quirk_fsl_no_msi
);