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PCI: print quirk name in debug messages
[mirror_ubuntu-bionic-kernel.git] / drivers / pci / quirks.c
CommitLineData
1da177e4
LT		 1/*
2 * This file contains work-arounds for many known PCI hardware
3 * bugs. Devices present only on certain architectures (host
4 * bridges et cetera) should be handled in arch-specific code.
5 *
6 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
7 *
8 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
9 *
7586269c
DB		 10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
12 *
1da177e4
LT		 13 * The bridge optimization stuff has been removed. If you really
14 * have a silly BIOS which is unable to set your host bridge right,
15 * use the PowerTweak utility (see http://powertweak.sourceforge.net).
16 */
17
1da177e4
LT		 18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <linux/delay.h>
25be5e6c 23#include <linux/acpi.h>
9f23ed3b 24#include <linux/kallsyms.h>
bc56b9e0 25#include "pci.h"
1da177e4 26
bd8481e1
DT		 27/* The Mellanox Tavor device gives false positive parity errors
28 * Mark this device with a broken_parity_status, to allow
29 * PCI scanning code to "skip" this now blacklisted device.
30 */
31static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
32{
33 dev->broken_parity_status = 1; /* This device gives false positives */
34}
35DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
36DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
37
1da177e4
LT		 38/* Deal with broken BIOS'es that neglect to enable passive release,
39 which can cause problems in combination with the 82441FX/PPro MTRRs */
1597cacb 40static void quirk_passive_release(struct pci_dev *dev)
1da177e4
LT		 41{
42 struct pci_dev *d = NULL;
43 unsigned char dlc;
44
45 /* We have to make sure a particular bit is set in the PIIX3
46 ISA bridge, so we have to go out and find it. */
47 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
48 pci_read_config_byte(d, 0x82, &dlc);
49 if (!(dlc & 1<<1)) {
50 printk(KERN_ERR "PCI: PIIX3: Enabling Passive Release on %s\n", pci_name(d));
51 dlc |= 1<<1;
52 pci_write_config_byte(d, 0x82, dlc);
53 }
54 }
55}
652c538e
AM		 56DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
57DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
1da177e4
LT		 58
59/* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
60 but VIA don't answer queries. If you happen to have good contacts at VIA
61 ask them for me please -- Alan
62
63 This appears to be BIOS not version dependent. So presumably there is a
64 chipset level fix */
c30ca1db
AB		 65int isa_dma_bridge_buggy;
66EXPORT_SYMBOL(isa_dma_bridge_buggy);
1da177e4
LT		 67
68static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
69{
70 if (!isa_dma_bridge_buggy) {
71 isa_dma_bridge_buggy=1;
72 printk(KERN_INFO "Activating ISA DMA hang workarounds.\n");
73 }
74}
75 /*
76 * Its not totally clear which chipsets are the problematic ones
77 * We know 82C586 and 82C596 variants are affected.
78 */
652c538e
AM		 79DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
80DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
81DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
82DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
83DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
84DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
85DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
1da177e4
LT		 86
87int pci_pci_problems;
c30ca1db 88EXPORT_SYMBOL(pci_pci_problems);
1da177e4
LT		 89
90/*
91 * Chipsets where PCI->PCI transfers vanish or hang
92 */
93static void __devinit quirk_nopcipci(struct pci_dev *dev)
94{
95 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
96 printk(KERN_INFO "Disabling direct PCI/PCI transfers.\n");
97 pci_pci_problems |= PCIPCI_FAIL;
98 }
99}
652c538e
AM		 100DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
101DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
236561e5
AC		 102
103static void __devinit quirk_nopciamd(struct pci_dev *dev)
104{
105 u8 rev;
106 pci_read_config_byte(dev, 0x08, &rev);
107 if (rev == 0x13) {
108 /* Erratum 24 */
109 printk(KERN_INFO "Chipset erratum: Disabling direct PCI/AGP transfers.\n");
110 pci_pci_problems |= PCIAGP_FAIL;
111 }
112}
652c538e 113DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
1da177e4
LT		 114
115/*
116 * Triton requires workarounds to be used by the drivers
117 */
118static void __devinit quirk_triton(struct pci_dev *dev)
119{
120 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
121 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
122 pci_pci_problems |= PCIPCI_TRITON;
123 }
124}
652c538e
AM		 125DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
126DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
127DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
128DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
1da177e4
LT		 129
130/*
131 * VIA Apollo KT133 needs PCI latency patch
132 * Made according to a windows driver based patch by George E. Breese
133 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
134 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
135 * the info on which Mr Breese based his work.
136 *
137 * Updated based on further information from the site and also on
138 * information provided by VIA
139 */
1597cacb 140static void quirk_vialatency(struct pci_dev *dev)
1da177e4
LT		 141{
142 struct pci_dev *p;
1da177e4
LT		 143 u8 busarb;
144 /* Ok we have a potential problem chipset here. Now see if we have
145 a buggy southbridge */
146
147 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
148 if (p!=NULL) {
1da177e4
LT		 149 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
150 /* Check for buggy part revisions */
2b1afa87 151 if (p->revision < 0x40 || p->revision > 0x42)
1da177e4
LT		 152 goto exit;
153 } else {
154 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
155 if (p==NULL) /* No problem parts */
156 goto exit;
1da177e4 157 /* Check for buggy part revisions */
2b1afa87 158 if (p->revision < 0x10 || p->revision > 0x12)
1da177e4
LT		 159 goto exit;
160 }
161
162 /*
163 * Ok we have the problem. Now set the PCI master grant to
164 * occur every master grant. The apparent bug is that under high
165 * PCI load (quite common in Linux of course) you can get data
166 * loss when the CPU is held off the bus for 3 bus master requests
167 * This happens to include the IDE controllers....
168 *
169 * VIA only apply this fix when an SB Live! is present but under
170 * both Linux and Windows this isnt enough, and we have seen
171 * corruption without SB Live! but with things like 3 UDMA IDE
172 * controllers. So we ignore that bit of the VIA recommendation..
173 */
174
175 pci_read_config_byte(dev, 0x76, &busarb);
176 /* Set bit 4 and bi 5 of byte 76 to 0x01
177 "Master priority rotation on every PCI master grant */
178 busarb &= ~(1<<5);
179 busarb |= (1<<4);
180 pci_write_config_byte(dev, 0x76, busarb);
181 printk(KERN_INFO "Applying VIA southbridge workaround.\n");
182exit:
183 pci_dev_put(p);
184}
652c538e
AM		 185DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
186DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
187DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
1597cacb 188/* Must restore this on a resume from RAM */
652c538e
AM		 189DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
190DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
191DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
1da177e4
LT		 192
193/*
194 * VIA Apollo VP3 needs ETBF on BT848/878
195 */
196static void __devinit quirk_viaetbf(struct pci_dev *dev)
197{
198 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
199 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
200 pci_pci_problems |= PCIPCI_VIAETBF;
201 }
202}
652c538e 203DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
1da177e4
LT		 204
205static void __devinit quirk_vsfx(struct pci_dev *dev)
206{
207 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
208 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
209 pci_pci_problems |= PCIPCI_VSFX;
210 }
211}
652c538e 212DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
1da177e4
LT		 213
214/*
215 * Ali Magik requires workarounds to be used by the drivers
216 * that DMA to AGP space. Latency must be set to 0xA and triton
217 * workaround applied too
218 * [Info kindly provided by ALi]
219 */
220static void __init quirk_alimagik(struct pci_dev *dev)
221{
222 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
223 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
224 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
225 }
226}
652c538e
AM		 227DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
228DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
1da177e4
LT		 229
230/*
231 * Natoma has some interesting boundary conditions with Zoran stuff
232 * at least
233 */
234static void __devinit quirk_natoma(struct pci_dev *dev)
235{
236 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
237 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
238 pci_pci_problems |= PCIPCI_NATOMA;
239 }
240}
652c538e
AM		 241DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
242DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
243DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
244DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
245DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
246DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
1da177e4
LT		 247
248/*
249 * This chip can cause PCI parity errors if config register 0xA0 is read
250 * while DMAs are occurring.
251 */
252static void __devinit quirk_citrine(struct pci_dev *dev)
253{
254 dev->cfg_size = 0xA0;
255}
652c538e 256DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
1da177e4
LT		 257
258/*
259 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
260 * If it's needed, re-allocate the region.
261 */
262static void __devinit quirk_s3_64M(struct pci_dev *dev)
263{
264 struct resource *r = &dev->resource[0];
265
266 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
267 r->start = 0;
268 r->end = 0x3ffffff;
269 }
270}
652c538e
AM		 271DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
272DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
1da177e4 273
6693e74a
LT		 274static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
275 unsigned size, int nr, const char *name)
1da177e4
LT		 276{
277 region &= ~(size-1);
278 if (region) {
085ae41f 279 struct pci_bus_region bus_region;
1da177e4
LT		 280 struct resource *res = dev->resource + nr;
281
282 res->name = pci_name(dev);
283 res->start = region;
284 res->end = region + size - 1;
285 res->flags = IORESOURCE_IO;
085ae41f
DM		 286
287 /* Convert from PCI bus to resource space. */
288 bus_region.start = res->start;
289 bus_region.end = res->end;
290 pcibios_bus_to_resource(dev, res, &bus_region);
291
1da177e4 292 pci_claim_resource(dev, nr);
6693e74a 293 printk("PCI quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
1da177e4
LT		 294 }
295}
296
297/*
298 * ATI Northbridge setups MCE the processor if you even
299 * read somewhere between 0x3b0->0x3bb or read 0x3d3
300 */
301static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
302{
303 printk(KERN_INFO "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb.\n");
304 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
305 request_region(0x3b0, 0x0C, "RadeonIGP");
306 request_region(0x3d3, 0x01, "RadeonIGP");
307}
652c538e 308DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
1da177e4
LT		 309
310/*
311 * Let's make the southbridge information explicit instead
312 * of having to worry about people probing the ACPI areas,
313 * for example.. (Yes, it happens, and if you read the wrong
314 * ACPI register it will put the machine to sleep with no
315 * way of waking it up again. Bummer).
316 *
317 * ALI M7101: Two IO regions pointed to by words at
318 * 0xE0 (64 bytes of ACPI registers)
319 * 0xE2 (32 bytes of SMB registers)
320 */
321static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
322{
323 u16 region;
324
325 pci_read_config_word(dev, 0xE0, &region);
6693e74a 326 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
1da177e4 327 pci_read_config_word(dev, 0xE2, &region);
6693e74a 328 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
1da177e4 329}
652c538e 330DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
1da177e4 331
6693e74a
LT		 332static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
333{
334 u32 devres;
335 u32 mask, size, base;
336
337 pci_read_config_dword(dev, port, &devres);
338 if ((devres & enable) != enable)
339 return;
340 mask = (devres >> 16) & 15;
341 base = devres & 0xffff;
342 size = 16;
343 for (;;) {
344 unsigned bit = size >> 1;
345 if ((bit & mask) == bit)
346 break;
347 size = bit;
348 }
349 /*
350 * For now we only print it out. Eventually we'll want to
351 * reserve it (at least if it's in the 0x1000+ range), but
352 * let's get enough confirmation reports first.
353 */
354 base &= -size;
355 printk("%s PIO at %04x-%04x\n", name, base, base + size - 1);
356}
357
358static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
359{
360 u32 devres;
361 u32 mask, size, base;
362
363 pci_read_config_dword(dev, port, &devres);
364 if ((devres & enable) != enable)
365 return;
366 base = devres & 0xffff0000;
367 mask = (devres & 0x3f) << 16;
368 size = 128 << 16;
369 for (;;) {
370 unsigned bit = size >> 1;
371 if ((bit & mask) == bit)
372 break;
373 size = bit;
374 }
375 /*
376 * For now we only print it out. Eventually we'll want to
377 * reserve it, but let's get enough confirmation reports first.
378 */
379 base &= -size;
380 printk("%s MMIO at %04x-%04x\n", name, base, base + size - 1);
381}
382
1da177e4
LT		 383/*
384 * PIIX4 ACPI: Two IO regions pointed to by longwords at
385 * 0x40 (64 bytes of ACPI registers)
08db2a70 386 * 0x90 (16 bytes of SMB registers)
6693e74a 387 * and a few strange programmable PIIX4 device resources.
1da177e4
LT		 388 */
389static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
390{
6693e74a 391 u32 region, res_a;
1da177e4
LT		 392
393 pci_read_config_dword(dev, 0x40, &region);
6693e74a 394 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
1da177e4 395 pci_read_config_dword(dev, 0x90, &region);
08db2a70 396 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
6693e74a
LT		 397
398 /* Device resource A has enables for some of the other ones */
399 pci_read_config_dword(dev, 0x5c, &res_a);
400
401 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
402 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
403
404 /* Device resource D is just bitfields for static resources */
405
406 /* Device 12 enabled? */
407 if (res_a & (1 << 29)) {
408 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
409 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
410 }
411 /* Device 13 enabled? */
412 if (res_a & (1 << 30)) {
413 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
414 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
415 }
416 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
417 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
1da177e4 418}
652c538e
AM		 419DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
420DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
1da177e4
LT		 421
422/*
423 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
424 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
425 * 0x58 (64 bytes of GPIO I/O space)
426 */
427static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
428{
429 u32 region;
430
431 pci_read_config_dword(dev, 0x40, &region);
6693e74a 432 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
1da177e4
LT		 433
434 pci_read_config_dword(dev, 0x58, &region);
6693e74a 435 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
1da177e4 436}
652c538e
AM		 437DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
438DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
439DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
440DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
441DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
442DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
443DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
444DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
445DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
446DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
1da177e4 447
2cea752f
RM		 448static void __devinit quirk_ich6_lpc_acpi(struct pci_dev *dev)
449{
450 u32 region;
451
452 pci_read_config_dword(dev, 0x40, &region);
453 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
454
455 pci_read_config_dword(dev, 0x48, &region);
456 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
457}
652c538e
AM		 458DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc_acpi);
459DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc_acpi);
460DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich6_lpc_acpi);
461DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich6_lpc_acpi);
462DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich6_lpc_acpi);
463DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich6_lpc_acpi);
464DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich6_lpc_acpi);
465DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich6_lpc_acpi);
466DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich6_lpc_acpi);
467DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich6_lpc_acpi);
468DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich6_lpc_acpi);
469DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich6_lpc_acpi);
470DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich6_lpc_acpi);
471DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich6_lpc_acpi);
2cea752f 472
1da177e4
LT		 473/*
474 * VIA ACPI: One IO region pointed to by longword at
475 * 0x48 or 0x20 (256 bytes of ACPI registers)
476 */
477static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
478{
1da177e4
LT		 479 u32 region;
480
651472fb 481 if (dev->revision & 0x10) {
1da177e4
LT		 482 pci_read_config_dword(dev, 0x48, &region);
483 region &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 484 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
1da177e4
LT		 485 }
486}
652c538e 487DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
1da177e4
LT		 488
489/*
490 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
491 * 0x48 (256 bytes of ACPI registers)
492 * 0x70 (128 bytes of hardware monitoring register)
493 * 0x90 (16 bytes of SMB registers)
494 */
495static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
496{
497 u16 hm;
498 u32 smb;
499
500 quirk_vt82c586_acpi(dev);
501
502 pci_read_config_word(dev, 0x70, &hm);
503 hm &= PCI_BASE_ADDRESS_IO_MASK;
02f313b2 504 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
1da177e4
LT		 505
506 pci_read_config_dword(dev, 0x90, &smb);
507 smb &= PCI_BASE_ADDRESS_IO_MASK;
02f313b2 508 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
1da177e4 509}
652c538e 510DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
1da177e4 511
6d85f29b
IK		 512/*
513 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
514 * 0x88 (128 bytes of power management registers)
515 * 0xd0 (16 bytes of SMB registers)
516 */
517static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
518{
519 u16 pm, smb;
520
521 pci_read_config_word(dev, 0x88, &pm);
522 pm &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 523 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
6d85f29b
IK		 524
525 pci_read_config_word(dev, 0xd0, &smb);
526 smb &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 527 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
6d85f29b
IK		 528}
529DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
530
1da177e4
LT		 531
532#ifdef CONFIG_X86_IO_APIC
533
534#include <asm/io_apic.h>
535
536/*
537 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
538 * devices to the external APIC.
539 *
540 * TODO: When we have device-specific interrupt routers,
541 * this code will go away from quirks.
542 */
1597cacb 543static void quirk_via_ioapic(struct pci_dev *dev)
1da177e4
LT		 544{
545 u8 tmp;
546
547 if (nr_ioapics < 1)
548 tmp = 0; /* nothing routed to external APIC */
549 else
550 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
551
552 printk(KERN_INFO "PCI: %sbling Via external APIC routing\n",
553 tmp == 0 ? "Disa" : "Ena");
554
555 /* Offset 0x58: External APIC IRQ output control */
556 pci_write_config_byte (dev, 0x58, tmp);
557}
652c538e
AM		 558DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
559DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1da177e4 560
a1740913
KW		 561/*
562 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
563 * This leads to doubled level interrupt rates.
564 * Set this bit to get rid of cycle wastage.
565 * Otherwise uncritical.
566 */
1597cacb 567static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
a1740913
KW		 568{
569 u8 misc_control2;
570#define BYPASS_APIC_DEASSERT 8
571
572 pci_read_config_byte(dev, 0x5B, &misc_control2);
573 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
574 printk(KERN_INFO "PCI: Bypassing VIA 8237 APIC De-Assert Message\n");
575 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
576 }
577}
578DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1597cacb 579DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
a1740913 580
1da177e4
LT		 581/*
582 * The AMD io apic can hang the box when an apic irq is masked.
583 * We check all revs >= B0 (yet not in the pre production!) as the bug
584 * is currently marked NoFix
585 *
586 * We have multiple reports of hangs with this chipset that went away with
236561e5 587 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1da177e4
LT		 588 * of course. However the advice is demonstrably good even if so..
589 */
590static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
591{
44c10138 592 if (dev->revision >= 0x02) {
236561e5 593 printk(KERN_WARNING "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1da177e4
LT		 594 printk(KERN_WARNING " : booting with the \"noapic\" option.\n");
595 }
596}
652c538e 597DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1da177e4
LT		 598
599static void __init quirk_ioapic_rmw(struct pci_dev *dev)
600{
601 if (dev->devfn == 0 && dev->bus->number == 0)
602 sis_apic_bug = 1;
603}
652c538e 604DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
1da177e4 605
1da177e4
LT		 606#define AMD8131_revA0 0x01
607#define AMD8131_revB0 0x11
608#define AMD8131_MISC 0x40
609#define AMD8131_NIOAMODE_BIT 0
1597cacb 610static void quirk_amd_8131_ioapic(struct pci_dev *dev)
1da177e4 611{
44c10138 612 unsigned char tmp;
1da177e4 613
1da177e4
LT		 614 if (nr_ioapics == 0)
615 return;
616
44c10138 617 if (dev->revision == AMD8131_revA0 || dev->revision == AMD8131_revB0) {
1da177e4
LT		 618 printk(KERN_INFO "Fixing up AMD8131 IOAPIC mode\n");
619 pci_read_config_byte( dev, AMD8131_MISC, &tmp);
620 tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
621 pci_write_config_byte( dev, AMD8131_MISC, tmp);
622 }
623}
5da594b1 624DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
1597cacb 625DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
1da177e4
LT		 626#endif /* CONFIG_X86_IO_APIC */
627
d556ad4b
PO		 628/*
629 * Some settings of MMRBC can lead to data corruption so block changes.
630 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
631 */
632static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
633{
aa288d4d 634 if (dev->subordinate && dev->revision <= 0x12) {
b7b095c1 635 printk(KERN_INFO "AMD8131 rev %x detected, disabling PCI-X "
aa288d4d 636 "MMRBC\n", dev->revision);
d556ad4b
PO		 637 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
638 }
639}
640DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1da177e4 641
1da177e4
LT		 642/*
643 * FIXME: it is questionable that quirk_via_acpi
644 * is needed. It shows up as an ISA bridge, and does not
645 * support the PCI_INTERRUPT_LINE register at all. Therefore
646 * it seems like setting the pci_dev's 'irq' to the
647 * value of the ACPI SCI interrupt is only done for convenience.
648 * -jgarzik
649 */
650static void __devinit quirk_via_acpi(struct pci_dev *d)
651{
652 /*
653 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
654 */
655 u8 irq;
656 pci_read_config_byte(d, 0x42, &irq);
657 irq &= 0xf;
658 if (irq && (irq != 2))
659 d->irq = irq;
660}
652c538e
AM		 661DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
662DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1da177e4 663
09d6029f
DD		 664
665/*
1597cacb 666 * VIA bridges which have VLink
09d6029f 667 */
1597cacb 668
c06bb5d4
JD		 669static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
670
671static void quirk_via_bridge(struct pci_dev *dev)
672{
673 /* See what bridge we have and find the device ranges */
674 switch (dev->device) {
675 case PCI_DEVICE_ID_VIA_82C686:
cb7468ef
JD		 676 /* The VT82C686 is special, it attaches to PCI and can have
677 any device number. All its subdevices are functions of
678 that single device. */
679 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
680 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
c06bb5d4
JD		 681 break;
682 case PCI_DEVICE_ID_VIA_8237:
683 case PCI_DEVICE_ID_VIA_8237A:
684 via_vlink_dev_lo = 15;
685 break;
686 case PCI_DEVICE_ID_VIA_8235:
687 via_vlink_dev_lo = 16;
688 break;
689 case PCI_DEVICE_ID_VIA_8231:
690 case PCI_DEVICE_ID_VIA_8233_0:
691 case PCI_DEVICE_ID_VIA_8233A:
692 case PCI_DEVICE_ID_VIA_8233C_0:
693 via_vlink_dev_lo = 17;
694 break;
695 }
696}
697DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
698DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
699DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
700DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
701DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
702DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
703DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
704DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
09d6029f 705
1597cacb
AC		 706/**
707 * quirk_via_vlink - VIA VLink IRQ number update
708 * @dev: PCI device
709 *
710 * If the device we are dealing with is on a PIC IRQ we need to
711 * ensure that the IRQ line register which usually is not relevant
712 * for PCI cards, is actually written so that interrupts get sent
c06bb5d4
JD		 713 * to the right place.
714 * We only do this on systems where a VIA south bridge was detected,
715 * and only for VIA devices on the motherboard (see quirk_via_bridge
716 * above).
1597cacb
AC		 717 */
718
719static void quirk_via_vlink(struct pci_dev *dev)
25be5e6c
LB		 720{
721 u8 irq, new_irq;
722
c06bb5d4
JD		 723 /* Check if we have VLink at all */
724 if (via_vlink_dev_lo == -1)
09d6029f
DD		 725 return;
726
727 new_irq = dev->irq;
728
729 /* Don't quirk interrupts outside the legacy IRQ range */
730 if (!new_irq || new_irq > 15)
731 return;
732
1597cacb 733 /* Internal device ? */
c06bb5d4
JD		 734 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
735 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1597cacb
AC		 736 return;
737
738 /* This is an internal VLink device on a PIC interrupt. The BIOS
739 ought to have set this but may not have, so we redo it */
740
25be5e6c
LB		 741 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
742 if (new_irq != irq) {
1597cacb 743 printk(KERN_INFO "PCI: VIA VLink IRQ fixup for %s, from %d to %d\n",
25be5e6c
LB		 744 pci_name(dev), irq, new_irq);
745 udelay(15); /* unknown if delay really needed */
746 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
747 }
748}
1597cacb 749DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
25be5e6c 750
1da177e4
LT		 751/*
752 * VIA VT82C598 has its device ID settable and many BIOSes
753 * set it to the ID of VT82C597 for backward compatibility.
754 * We need to switch it off to be able to recognize the real
755 * type of the chip.
756 */
757static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
758{
759 pci_write_config_byte(dev, 0xfc, 0);
760 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
761}
652c538e 762DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1da177e4
LT		 763
764/*
765 * CardBus controllers have a legacy base address that enables them
766 * to respond as i82365 pcmcia controllers. We don't want them to
767 * do this even if the Linux CardBus driver is not loaded, because
768 * the Linux i82365 driver does not (and should not) handle CardBus.
769 */
1597cacb 770static void quirk_cardbus_legacy(struct pci_dev *dev)
1da177e4
LT		 771{
772 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
773 return;
774 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
775}
776DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
1597cacb 777DECLARE_PCI_FIXUP_RESUME(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
1da177e4
LT		 778
779/*
780 * Following the PCI ordering rules is optional on the AMD762. I'm not
781 * sure what the designers were smoking but let's not inhale...
782 *
783 * To be fair to AMD, it follows the spec by default, its BIOS people
784 * who turn it off!
785 */
1597cacb 786static void quirk_amd_ordering(struct pci_dev *dev)
1da177e4
LT		 787{
788 u32 pcic;
789 pci_read_config_dword(dev, 0x4C, &pcic);
790 if ((pcic&6)!=6) {
791 pcic |= 6;
792 printk(KERN_WARNING "BIOS failed to enable PCI standards compliance, fixing this error.\n");
793 pci_write_config_dword(dev, 0x4C, pcic);
794 pci_read_config_dword(dev, 0x84, &pcic);
795 pcic |= (1<<23); /* Required in this mode */
796 pci_write_config_dword(dev, 0x84, pcic);
797 }
798}
652c538e
AM		 799DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
800DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1da177e4
LT		 801
802/*
803 * DreamWorks provided workaround for Dunord I-3000 problem
804 *
805 * This card decodes and responds to addresses not apparently
806 * assigned to it. We force a larger allocation to ensure that
807 * nothing gets put too close to it.
808 */
809static void __devinit quirk_dunord ( struct pci_dev * dev )
810{
811 struct resource *r = &dev->resource [1];
812 r->start = 0;
813 r->end = 0xffffff;
814}
652c538e 815DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1da177e4
LT		 816
817/*
818 * i82380FB mobile docking controller: its PCI-to-PCI bridge
819 * is subtractive decoding (transparent), and does indicate this
820 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
821 * instead of 0x01.
822 */
823static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
824{
825 dev->transparent = 1;
826}
652c538e
AM		 827DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
828DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1da177e4
LT		 829
830/*
831 * Common misconfiguration of the MediaGX/Geode PCI master that will
832 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
833 * datasheets found at http://www.national.com/ds/GX for info on what
834 * these bits do. <christer@weinigel.se>
835 */
1597cacb 836static void quirk_mediagx_master(struct pci_dev *dev)
1da177e4
LT		 837{
838 u8 reg;
839 pci_read_config_byte(dev, 0x41, &reg);
840 if (reg & 2) {
841 reg &= ~2;
842 printk(KERN_INFO "PCI: Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
843 pci_write_config_byte(dev, 0x41, reg);
844 }
845}
652c538e
AM		 846DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
847DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1da177e4 848
1da177e4
LT		 849/*
850 * Ensure C0 rev restreaming is off. This is normally done by
851 * the BIOS but in the odd case it is not the results are corruption
852 * hence the presence of a Linux check
853 */
1597cacb 854static void quirk_disable_pxb(struct pci_dev *pdev)
1da177e4
LT		 855{
856 u16 config;
1da177e4 857
44c10138 858 if (pdev->revision != 0x04) /* Only C0 requires this */
1da177e4
LT		 859 return;
860 pci_read_config_word(pdev, 0x40, &config);
861 if (config & (1<<6)) {
862 config &= ~(1<<6);
863 pci_write_config_word(pdev, 0x40, config);
864 printk(KERN_INFO "PCI: C0 revision 450NX. Disabling PCI restreaming.\n");
865 }
866}
652c538e
AM		 867DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
868DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1da177e4 869
1da177e4 870
ab17443a
CH		 871static void __devinit quirk_sb600_sata(struct pci_dev *pdev)
872{
873 /* set sb600 sata to ahci mode */
874 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
875 u8 tmp;
876
877 pci_read_config_byte(pdev, 0x40, &tmp);
878 pci_write_config_byte(pdev, 0x40, tmp|1);
879 pci_write_config_byte(pdev, 0x9, 1);
880 pci_write_config_byte(pdev, 0xa, 6);
881 pci_write_config_byte(pdev, 0x40, tmp);
882
c9f89475 883 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
ab17443a
CH		 884 }
885}
886DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_sb600_sata);
82377718 887DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_sb600_sata);
ab17443a 888
1da177e4
LT		 889/*
890 * Serverworks CSB5 IDE does not fully support native mode
891 */
892static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
893{
894 u8 prog;
895 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
896 if (prog & 5) {
897 prog &= ~5;
898 pdev->class &= ~5;
899 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
368c73d4 900 /* PCI layer will sort out resources */
1da177e4
LT		 901 }
902}
652c538e 903DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1da177e4
LT		 904
905/*
906 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
907 */
908static void __init quirk_ide_samemode(struct pci_dev *pdev)
909{
910 u8 prog;
911
912 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
913
914 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
915 printk(KERN_INFO "PCI: IDE mode mismatch; forcing legacy mode\n");
916 prog &= ~5;
917 pdev->class &= ~5;
918 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1da177e4
LT		 919 }
920}
368c73d4 921DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1da177e4
LT		 922
923/* This was originally an Alpha specific thing, but it really fits here.
924 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
925 */
926static void __init quirk_eisa_bridge(struct pci_dev *dev)
927{
928 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
929}
652c538e 930DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1da177e4 931
7daa0c4f 932
1da177e4
LT		 933/*
934 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
935 * is not activated. The myth is that Asus said that they do not want the
936 * users to be irritated by just another PCI Device in the Win98 device
937 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
938 * package 2.7.0 for details)
939 *
940 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
941 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
d7698edc 942 * becomes necessary to do this tweak in two steps -- the chosen trigger
943 * is either the Host bridge (preferred) or on-board VGA controller.
9208ee82
JD		 944 *
945 * Note that we used to unhide the SMBus that way on Toshiba laptops
946 * (Satellite A40 and Tecra M2) but then found that the thermal management
947 * was done by SMM code, which could cause unsynchronized concurrent
948 * accesses to the SMBus registers, with potentially bad effects. Thus you
949 * should be very careful when adding new entries: if SMM is accessing the
950 * Intel SMBus, this is a very good reason to leave it hidden.
1da177e4 951 */
9d24a81e 952static int asus_hides_smbus;
1da177e4
LT		 953
954static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
955{
956 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
957 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
958 switch(dev->subsystem_device) {
a00db371 959 case 0x8025: /* P4B-LX */
1da177e4
LT		 960 case 0x8070: /* P4B */
961 case 0x8088: /* P4B533 */
962 case 0x1626: /* L3C notebook */
963 asus_hides_smbus = 1;
964 }
2f2d39d2 965 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1da177e4
LT		 966 switch(dev->subsystem_device) {
967 case 0x80b1: /* P4GE-V */
968 case 0x80b2: /* P4PE */
969 case 0x8093: /* P4B533-V */
970 asus_hides_smbus = 1;
971 }
2f2d39d2 972 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1da177e4
LT		 973 switch(dev->subsystem_device) {
974 case 0x8030: /* P4T533 */
975 asus_hides_smbus = 1;
976 }
2f2d39d2 977 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1da177e4
LT		 978 switch (dev->subsystem_device) {
979 case 0x8070: /* P4G8X Deluxe */
980 asus_hides_smbus = 1;
981 }
2f2d39d2 982 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
321311af
JD		 983 switch (dev->subsystem_device) {
984 case 0x80c9: /* PU-DLS */
985 asus_hides_smbus = 1;
986 }
2f2d39d2 987 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1da177e4
LT		 988 switch (dev->subsystem_device) {
989 case 0x1751: /* M2N notebook */
990 case 0x1821: /* M5N notebook */
991 asus_hides_smbus = 1;
992 }
2f2d39d2 993 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1da177e4
LT		 994 switch (dev->subsystem_device) {
995 case 0x184b: /* W1N notebook */
996 case 0x186a: /* M6Ne notebook */
997 asus_hides_smbus = 1;
998 }
2f2d39d2 999 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
2e45785c
JD		 1000 switch (dev->subsystem_device) {
1001 case 0x80f2: /* P4P800-X */
1002 asus_hides_smbus = 1;
1003 }
2f2d39d2 1004 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
acc06632
RM		 1005 switch (dev->subsystem_device) {
1006 case 0x1882: /* M6V notebook */
2d1e1c75 1007 case 0x1977: /* A6VA notebook */
acc06632
RM		 1008 asus_hides_smbus = 1;
1009 }
1da177e4
LT		 1010 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1011 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1012 switch(dev->subsystem_device) {
1013 case 0x088C: /* HP Compaq nc8000 */
1014 case 0x0890: /* HP Compaq nc6000 */
1015 asus_hides_smbus = 1;
1016 }
2f2d39d2 1017 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1da177e4
LT		 1018 switch (dev->subsystem_device) {
1019 case 0x12bc: /* HP D330L */
e3b1bd57 1020 case 0x12bd: /* HP D530 */
1da177e4
LT		 1021 asus_hides_smbus = 1;
1022 }
677cc644
JD		 1023 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1024 switch (dev->subsystem_device) {
1025 case 0x12bf: /* HP xw4100 */
1026 asus_hides_smbus = 1;
1027 }
2f2d39d2 1028 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
3c0a654e 1029 switch (dev->subsystem_device) {
1030 case 0x099c: /* HP Compaq nx6110 */
1031 asus_hides_smbus = 1;
1032 }
1da177e4
LT		 1033 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1034 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1035 switch(dev->subsystem_device) {
1036 case 0xC00C: /* Samsung P35 notebook */
1037 asus_hides_smbus = 1;
1038 }
c87f883e
RIZ		 1039 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1040 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1041 switch(dev->subsystem_device) {
1042 case 0x0058: /* Compaq Evo N620c */
1043 asus_hides_smbus = 1;
1044 }
d7698edc 1045 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1046 switch(dev->subsystem_device) {
1047 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1048 /* Motherboard doesn't have Host bridge
1049 * subvendor/subdevice IDs, therefore checking
1050 * its on-board VGA controller */
1051 asus_hides_smbus = 1;
1052 }
1da177e4
LT		 1053 }
1054}
652c538e
AM		 1055DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1056DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1057DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1058DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
677cc644 1059DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
652c538e
AM		 1060DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1061DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1062DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1063DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1064DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1065
1066DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
d7698edc 1067
1597cacb 1068static void asus_hides_smbus_lpc(struct pci_dev *dev)
1da177e4
LT		 1069{
1070 u16 val;
1071
1072 if (likely(!asus_hides_smbus))
1073 return;
1074
1075 pci_read_config_word(dev, 0xF2, &val);
1076 if (val & 0x8) {
1077 pci_write_config_word(dev, 0xF2, val & (~0x8));
1078 pci_read_config_word(dev, 0xF2, &val);
1079 if (val & 0x8)
1080 printk(KERN_INFO "PCI: i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1081 else
1082 printk(KERN_INFO "PCI: Enabled i801 SMBus device\n");
1083 }
1084}
652c538e
AM		 1085DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1086DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1087DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1088DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1089DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1090DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1091DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1092DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1093DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1094DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1095DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1096DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1097DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1098DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1597cacb
AC		 1099
1100static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
acc06632
RM		 1101{
1102 u32 val, rcba;
1103 void __iomem *base;
1104
1105 if (likely(!asus_hides_smbus))
1106 return;
1107 pci_read_config_dword(dev, 0xF0, &rcba);
1108 base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); /* use bits 31:14, 16 kB aligned */
1109 if (base == NULL) return;
1110 val=readl(base + 0x3418); /* read the Function Disable register, dword mode only */
1111 writel(val & 0xFFFFFFF7, base + 0x3418); /* enable the SMBus device */
1112 iounmap(base);
1113 printk(KERN_INFO "PCI: Enabled ICH6/i801 SMBus device\n");
1114}
652c538e
AM		 1115DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1116DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
ce007ea5 1117
1da177e4
LT		 1118/*
1119 * SiS 96x south bridge: BIOS typically hides SMBus device...
1120 */
1597cacb 1121static void quirk_sis_96x_smbus(struct pci_dev *dev)
1da177e4
LT		 1122{
1123 u8 val = 0;
1da177e4 1124 pci_read_config_byte(dev, 0x77, &val);
2f5c33b3
MH		 1125 if (val & 0x10) {
1126 printk(KERN_INFO "Enabling SiS 96x SMBus.\n");
1127 pci_write_config_byte(dev, 0x77, val & ~0x10);
1128 }
1da177e4 1129}
652c538e
AM		 1130DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1131DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1132DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1133DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1134DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1135DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1136DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1137DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1da177e4 1138
1da177e4
LT		 1139/*
1140 * ... This is further complicated by the fact that some SiS96x south
1141 * bridges pretend to be 85C503/5513 instead. In that case see if we
1142 * spotted a compatible north bridge to make sure.
1143 * (pci_find_device doesn't work yet)
1144 *
1145 * We can also enable the sis96x bit in the discovery register..
1146 */
1da177e4
LT		 1147#define SIS_DETECT_REGISTER 0x40
1148
1597cacb 1149static void quirk_sis_503(struct pci_dev *dev)
1da177e4
LT		 1150{
1151 u8 reg;
1152 u16 devid;
1153
1154 pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1155 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1156 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1157 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1158 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1159 return;
1160 }
1161
1da177e4 1162 /*
2f5c33b3
MH		 1163 * Ok, it now shows up as a 96x.. run the 96x quirk by
1164 * hand in case it has already been processed.
1165 * (depends on link order, which is apparently not guaranteed)
1da177e4
LT		 1166 */
1167 dev->device = devid;
2f5c33b3 1168 quirk_sis_96x_smbus(dev);
1da177e4 1169}
652c538e
AM		 1170DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1171DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1da177e4 1172
1da177e4 1173
e5548e96
BJD		 1174/*
1175 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1176 * and MC97 modem controller are disabled when a second PCI soundcard is
1177 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1178 * -- bjd
1179 */
1597cacb 1180static void asus_hides_ac97_lpc(struct pci_dev *dev)
e5548e96
BJD		 1181{
1182 u8 val;
1183 int asus_hides_ac97 = 0;
1184
1185 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1186 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1187 asus_hides_ac97 = 1;
1188 }
1189
1190 if (!asus_hides_ac97)
1191 return;
1192
1193 pci_read_config_byte(dev, 0x50, &val);
1194 if (val & 0xc0) {
1195 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1196 pci_read_config_byte(dev, 0x50, &val);
1197 if (val & 0xc0)
1198 printk(KERN_INFO "PCI: onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1199 else
1200 printk(KERN_INFO "PCI: enabled onboard AC97/MC97 devices\n");
1201 }
1202}
652c538e
AM		 1203DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1204DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1597cacb 1205
77967052 1206#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
15e0c694
AC		 1207
1208/*
1209 * If we are using libata we can drive this chip properly but must
1210 * do this early on to make the additional device appear during
1211 * the PCI scanning.
1212 */
5ee2ae7f 1213static void quirk_jmicron_ata(struct pci_dev *pdev)
15e0c694 1214{
e34bb370 1215 u32 conf1, conf5, class;
15e0c694
AC		 1216 u8 hdr;
1217
1218 /* Only poke fn 0 */
1219 if (PCI_FUNC(pdev->devfn))
1220 return;
1221
5ee2ae7f
TH		 1222 pci_read_config_dword(pdev, 0x40, &conf1);
1223 pci_read_config_dword(pdev, 0x80, &conf5);
15e0c694 1224
5ee2ae7f
TH		 1225 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1226 conf5 &= ~(1 << 24); /* Clear bit 24 */
1227
1228 switch (pdev->device) {
1229 case PCI_DEVICE_ID_JMICRON_JMB360:
1230 /* The controller should be in single function ahci mode */
1231 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1232 break;
1233
1234 case PCI_DEVICE_ID_JMICRON_JMB365:
1235 case PCI_DEVICE_ID_JMICRON_JMB366:
1236 /* Redirect IDE second PATA port to the right spot */
1237 conf5 |= (1 << 24);
1238 /* Fall through */
1239 case PCI_DEVICE_ID_JMICRON_JMB361:
1240 case PCI_DEVICE_ID_JMICRON_JMB363:
1241 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1242 /* Set the class codes correctly and then direct IDE 0 */
3a9e3a51 1243 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
5ee2ae7f
TH		 1244 break;
1245
1246 case PCI_DEVICE_ID_JMICRON_JMB368:
1247 /* The controller should be in single function IDE mode */
1248 conf1 |= 0x00C00000; /* Set 22, 23 */
1249 break;
15e0c694 1250 }
5ee2ae7f
TH		 1251
1252 pci_write_config_dword(pdev, 0x40, conf1);
1253 pci_write_config_dword(pdev, 0x80, conf5);
1254
1255 /* Update pdev accordingly */
1256 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1257 pdev->hdr_type = hdr & 0x7f;
1258 pdev->multifunction = !!(hdr & 0x80);
e34bb370
TH		 1259
1260 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1261 pdev->class = class >> 8;
15e0c694 1262}
5ee2ae7f
TH		 1263DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1264DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1265DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1266DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1267DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1268DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1269DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1270DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1271DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1272DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1273DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1274DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
15e0c694
AC		 1275
1276#endif
1277
1da177e4
LT		 1278#ifdef CONFIG_X86_IO_APIC
1279static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1280{
1281 int i;
1282
1283 if ((pdev->class >> 8) != 0xff00)
1284 return;
1285
1286 /* the first BAR is the location of the IO APIC...we must
1287 * not touch this (and it's already covered by the fixmap), so
1288 * forcibly insert it into the resource tree */
1289 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1290 insert_resource(&iomem_resource, &pdev->resource[0]);
1291
1292 /* The next five BARs all seem to be rubbish, so just clean
1293 * them out */
1294 for (i=1; i < 6; i++) {
1295 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1296 }
1297
1298}
652c538e 1299DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1da177e4
LT		 1300#endif
1301
1da177e4 1302int pcie_mch_quirk;
c30ca1db 1303EXPORT_SYMBOL(pcie_mch_quirk);
1da177e4
LT		 1304
1305static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1306{
1307 pcie_mch_quirk = 1;
1308}
652c538e
AM		 1309DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1310DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1311DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1da177e4 1312
4602b88d
KA		 1313
1314/*
1315 * It's possible for the MSI to get corrupted if shpc and acpi
1316 * are used together on certain PXH-based systems.
1317 */
1318static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1319{
f5f2b131
EB		 1320 pci_msi_off(dev);
1321
4602b88d
KA		 1322 dev->no_msi = 1;
1323
1324 printk(KERN_WARNING "PCI: PXH quirk detected, "
1325 "disabling MSI for SHPC device\n");
1326}
1327DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1328DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1329DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1330DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1331DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1332
ffadcc2f
KCA		 1333/*
1334 * Some Intel PCI Express chipsets have trouble with downstream
1335 * device power management.
1336 */
1337static void quirk_intel_pcie_pm(struct pci_dev * dev)
1338{
1339 pci_pm_d3_delay = 120;
1340 dev->no_d1d2 = 1;
1341}
1342
1343DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1344DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1345DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1346DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1347DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1348DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1349DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1350DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1351DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1352DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1353DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1354DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1355DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1356DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1357DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1358DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1359DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1360DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1361DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1362DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1363DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
4602b88d 1364
33dced2e
SS		 1365/*
1366 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1367 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1368 * Re-allocate the region if needed...
1369 */
1370static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1371{
1372 struct resource *r = &dev->resource[0];
1373
1374 if (r->start & 0x8) {
1375 r->start = 0;
1376 r->end = 0xf;
1377 }
1378}
1379DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1380 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1381 quirk_tc86c001_ide);
1382
1da177e4
LT		 1383static void __devinit quirk_netmos(struct pci_dev *dev)
1384{
1385 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1386 unsigned int num_serial = dev->subsystem_device & 0xf;
1387
1388 /*
1389 * These Netmos parts are multiport serial devices with optional
1390 * parallel ports. Even when parallel ports are present, they
1391 * are identified as class SERIAL, which means the serial driver
1392 * will claim them. To prevent this, mark them as class OTHER.
1393 * These combo devices should be claimed by parport_serial.
1394 *
1395 * The subdevice ID is of the form 0x00PS, where <P> is the number
1396 * of parallel ports and <S> is the number of serial ports.
1397 */
1398 switch (dev->device) {
1399 case PCI_DEVICE_ID_NETMOS_9735:
1400 case PCI_DEVICE_ID_NETMOS_9745:
1401 case PCI_DEVICE_ID_NETMOS_9835:
1402 case PCI_DEVICE_ID_NETMOS_9845:
1403 case PCI_DEVICE_ID_NETMOS_9855:
1404 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1405 num_parallel) {
1406 printk(KERN_INFO "PCI: Netmos %04x (%u parallel, "
1407 "%u serial); changing class SERIAL to OTHER "
1408 "(use parport_serial)\n",
1409 dev->device, num_parallel, num_serial);
1410 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1411 (dev->class & 0xff);
1412 }
1413 }
1414}
1415DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1416
16a74744
BH		 1417static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1418{
e64aeccb 1419 u16 command, pmcsr;
16a74744
BH		 1420 u8 __iomem *csr;
1421 u8 cmd_hi;
e64aeccb 1422 int pm;
16a74744
BH		 1423
1424 switch (dev->device) {
1425 /* PCI IDs taken from drivers/net/e100.c */
1426 case 0x1029:
1427 case 0x1030 ... 0x1034:
1428 case 0x1038 ... 0x103E:
1429 case 0x1050 ... 0x1057:
1430 case 0x1059:
1431 case 0x1064 ... 0x106B:
1432 case 0x1091 ... 0x1095:
1433 case 0x1209:
1434 case 0x1229:
1435 case 0x2449:
1436 case 0x2459:
1437 case 0x245D:
1438 case 0x27DC:
1439 break;
1440 default:
1441 return;
1442 }
1443
1444 /*
1445 * Some firmware hands off the e100 with interrupts enabled,
1446 * which can cause a flood of interrupts if packets are
1447 * received before the driver attaches to the device. So
1448 * disable all e100 interrupts here. The driver will
1449 * re-enable them when it's ready.
1450 */
1451 pci_read_config_word(dev, PCI_COMMAND, &command);
16a74744 1452
1bef7dc0 1453 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
16a74744
BH		 1454 return;
1455
e64aeccb
IK		 1456 /*
1457 * Check that the device is in the D0 power state. If it's not,
1458 * there is no point to look any further.
1459 */
1460 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1461 if (pm) {
1462 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1463 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1464 return;
1465 }
1466
1bef7dc0
BH		 1467 /* Convert from PCI bus to resource space. */
1468 csr = ioremap(pci_resource_start(dev, 0), 8);
16a74744
BH		 1469 if (!csr) {
1470 printk(KERN_WARNING "PCI: Can't map %s e100 registers\n",
1471 pci_name(dev));
1472 return;
1473 }
1474
1475 cmd_hi = readb(csr + 3);
1476 if (cmd_hi == 0) {
1477 printk(KERN_WARNING "PCI: Firmware left %s e100 interrupts "
1478 "enabled, disabling\n", pci_name(dev));
1479 writeb(1, csr + 3);
1480 }
1481
1482 iounmap(csr);
1483}
4e68fc97 1484DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
a5312e28
IK		 1485
1486static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1487{
1488 /* rev 1 ncr53c810 chips don't set the class at all which means
1489 * they don't get their resources remapped. Fix that here.
1490 */
1491
1492 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1493 printk(KERN_INFO "NCR 53c810 rev 1 detected, setting PCI class.\n");
1494 dev->class = PCI_CLASS_STORAGE_SCSI;
1495 }
1496}
1497DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1498
1da177e4
LT		 1499static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
1500{
1501 while (f < end) {
1502 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
1503 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
9f23ed3b 1504#ifdef DEBUG
1505 dev_dbg(&dev->dev, "calling quirk 0x%p", f->hook);
1506 print_fn_descriptor_symbol(": %s()\n",
1507 (unsigned long) f->hook);
1508#endif
1da177e4
LT		 1509 f->hook(dev);
1510 }
1511 f++;
1512 }
1513}
1514
1515extern struct pci_fixup __start_pci_fixups_early[];
1516extern struct pci_fixup __end_pci_fixups_early[];
1517extern struct pci_fixup __start_pci_fixups_header[];
1518extern struct pci_fixup __end_pci_fixups_header[];
1519extern struct pci_fixup __start_pci_fixups_final[];
1520extern struct pci_fixup __end_pci_fixups_final[];
1521extern struct pci_fixup __start_pci_fixups_enable[];
1522extern struct pci_fixup __end_pci_fixups_enable[];
1597cacb
AC		 1523extern struct pci_fixup __start_pci_fixups_resume[];
1524extern struct pci_fixup __end_pci_fixups_resume[];
1da177e4
LT		 1525
1526
1527void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
1528{
1529 struct pci_fixup *start, *end;
1530
1531 switch(pass) {
1532 case pci_fixup_early:
1533 start = __start_pci_fixups_early;
1534 end = __end_pci_fixups_early;
1535 break;
1536
1537 case pci_fixup_header:
1538 start = __start_pci_fixups_header;
1539 end = __end_pci_fixups_header;
1540 break;
1541
1542 case pci_fixup_final:
1543 start = __start_pci_fixups_final;
1544 end = __end_pci_fixups_final;
1545 break;
1546
1547 case pci_fixup_enable:
1548 start = __start_pci_fixups_enable;
1549 end = __end_pci_fixups_enable;
1550 break;
1551
1597cacb
AC		 1552 case pci_fixup_resume:
1553 start = __start_pci_fixups_resume;
1554 end = __end_pci_fixups_resume;
1555 break;
1556
1da177e4
LT		 1557 default:
1558 /* stupid compiler warning, you would think with an enum... */
1559 return;
1560 }
1561 pci_do_fixups(dev, start, end);
1562}
c30ca1db 1563EXPORT_SYMBOL(pci_fixup_device);
1da177e4 1564
9d265124
DY		 1565/* Enable 1k I/O space granularity on the Intel P64H2 */
1566static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1567{
1568 u16 en1k;
1569 u8 io_base_lo, io_limit_lo;
1570 unsigned long base, limit;
1571 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1572
1573 pci_read_config_word(dev, 0x40, &en1k);
1574
1575 if (en1k & 0x200) {
1576 printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n");
1577
1578 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1579 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1580 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1581 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1582
1583 if (base <= limit) {
1584 res->start = base;
1585 res->end = limit + 0x3ff;
1586 }
1587 }
1588}
1589DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1590
15a260d5
DY		 1591/* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1592 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1593 * in drivers/pci/setup-bus.c
1594 */
1595static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1596{
1597 u16 en1k, iobl_adr, iobl_adr_1k;
1598 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1599
1600 pci_read_config_word(dev, 0x40, &en1k);
1601
1602 if (en1k & 0x200) {
1603 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1604
1605 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1606
1607 if (iobl_adr != iobl_adr_1k) {
1608 printk(KERN_INFO "PCI: Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1 KB Granularity\n",
1609 iobl_adr,iobl_adr_1k);
1610 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1611 }
1612 }
1613}
1614DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1615
cf34a8e0
BG		 1616/* Under some circumstances, AER is not linked with extended capabilities.
1617 * Force it to be linked by setting the corresponding control bit in the
1618 * config space.
1619 */
1597cacb 1620static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
cf34a8e0
BG		 1621{
1622 uint8_t b;
1623 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1624 if (!(b & 0x20)) {
1625 pci_write_config_byte(dev, 0xf41, b | 0x20);
1626 printk(KERN_INFO
1627 "PCI: Linking AER extended capability on %s\n",
1628 pci_name(dev));
1629 }
1630 }
1631}
1632DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1633 quirk_nvidia_ck804_pcie_aer_ext_cap);
1597cacb
AC		 1634DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1635 quirk_nvidia_ck804_pcie_aer_ext_cap);
cf34a8e0 1636
53a9bf42
TY		 1637static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1638{
1639 /*
1640 * Disable PCI Bus Parking and PCI Master read caching on CX700
1641 * which causes unspecified timing errors with a VT6212L on the PCI
1642 * bus leading to USB2.0 packet loss. The defaults are that these
1643 * features are turned off but some BIOSes turn them on.
1644 */
1645
1646 uint8_t b;
1647 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1648 if (b & 0x40) {
1649 /* Turn off PCI Bus Parking */
1650 pci_write_config_byte(dev, 0x76, b ^ 0x40);
1651
1652 /* Turn off PCI Master read caching */
1653 pci_write_config_byte(dev, 0x72, 0x0);
1654 pci_write_config_byte(dev, 0x75, 0x1);
1655 pci_write_config_byte(dev, 0x77, 0x0);
1656
1657 printk(KERN_INFO
1658 "PCI: VIA CX700 PCI parking/caching fixup on %s\n",
1659 pci_name(dev));
1660 }
1661 }
1662}
1663DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1664
3f79e107 1665#ifdef CONFIG_PCI_MSI
ebdf7d39
TH		 1666/* Some chipsets do not support MSI. We cannot easily rely on setting
1667 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
1668 * some other busses controlled by the chipset even if Linux is not
1669 * aware of it. Instead of setting the flag on all busses in the
1670 * machine, simply disable MSI globally.
3f79e107 1671 */
ebdf7d39 1672static void __init quirk_disable_all_msi(struct pci_dev *dev)
3f79e107 1673{
88187dfa
ME		 1674 pci_no_msi();
1675 printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
3f79e107 1676}
ebdf7d39
TH		 1677DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
1678DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
1679DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
184b812f 1680DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
3f79e107
BG		 1681
1682/* Disable MSI on chipsets that are known to not support it */
1683static void __devinit quirk_disable_msi(struct pci_dev *dev)
1684{
1685 if (dev->subordinate) {
1686 printk(KERN_WARNING "PCI: MSI quirk detected. "
1687 "PCI_BUS_FLAGS_NO_MSI set for %s subordinate bus.\n",
1688 pci_name(dev));
1689 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1690 }
1691}
1692DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
6397c75c
BG		 1693
1694/* Go through the list of Hypertransport capabilities and
1695 * return 1 if a HT MSI capability is found and enabled */
1696static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
1697{
7a380507
ME		 1698 int pos, ttl = 48;
1699
1700 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1701 while (pos && ttl--) {
1702 u8 flags;
1703
1704 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1705 &flags) == 0)
1706 {
1707 printk(KERN_INFO "PCI: Found %s HT MSI Mapping on %s\n",
1708 flags & HT_MSI_FLAGS_ENABLE ?
1709 "enabled" : "disabled", pci_name(dev));
1710 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
6397c75c 1711 }
7a380507
ME		 1712
1713 pos = pci_find_next_ht_capability(dev, pos,
1714 HT_CAPTYPE_MSI_MAPPING);
6397c75c
BG		 1715 }
1716 return 0;
1717}
1718
1719/* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
1720static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
1721{
1722 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
1723 printk(KERN_WARNING "PCI: MSI quirk detected. "
1724 "MSI disabled on chipset %s.\n",
1725 pci_name(dev));
1726 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1727 }
1728}
1729DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
1730 quirk_msi_ht_cap);
6bae1d96
SD		 1731
1732
1733/*
1734 * Force enable MSI mapping capability on HT bridges
1735 */
1736static void __devinit quirk_msi_ht_cap_enable(struct pci_dev *dev)
1737{
1738 int pos, ttl = 48;
1739
1740 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1741 while (pos && ttl--) {
1742 u8 flags;
1743
1744 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) {
1745 printk(KERN_INFO "PCI: Enabling HT MSI Mapping on %s\n",
1746 pci_name(dev));
1747
1748 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
1749 flags | HT_MSI_FLAGS_ENABLE);
1750 }
1751 pos = pci_find_next_ht_capability(dev, pos,
1752 HT_CAPTYPE_MSI_MAPPING);
1753 }
1754}
1755DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
1756 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
1757 quirk_msi_ht_cap_enable);
6397c75c
BG		 1758
1759/* The nVidia CK804 chipset may have 2 HT MSI mappings.
1760 * MSI are supported if the MSI capability set in any of these mappings.
1761 */
1762static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
1763{
1764 struct pci_dev *pdev;
1765
1766 if (!dev->subordinate)
1767 return;
1768
1769 /* check HT MSI cap on this chipset and the root one.
1770 * a single one having MSI is enough to be sure that MSI are supported.
1771 */
11f242f0 1772 pdev = pci_get_slot(dev->bus, 0);
9ac0ce85
JJ		 1773 if (!pdev)
1774 return;
0c875c28 1775 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
6397c75c
BG		 1776 printk(KERN_WARNING "PCI: MSI quirk detected. "
1777 "MSI disabled on chipset %s.\n",
1778 pci_name(dev));
1779 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1780 }
11f242f0 1781 pci_dev_put(pdev);
6397c75c
BG		 1782}
1783DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1784 quirk_nvidia_ck804_msi_ht_cap);
ba698ad4
DM		 1785
1786static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
1787{
1788 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
1789}
1790DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1791 PCI_DEVICE_ID_TIGON3_5780,
1792 quirk_msi_intx_disable_bug);
1793DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1794 PCI_DEVICE_ID_TIGON3_5780S,
1795 quirk_msi_intx_disable_bug);
1796DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1797 PCI_DEVICE_ID_TIGON3_5714,
1798 quirk_msi_intx_disable_bug);
1799DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1800 PCI_DEVICE_ID_TIGON3_5714S,
1801 quirk_msi_intx_disable_bug);
1802DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1803 PCI_DEVICE_ID_TIGON3_5715,
1804 quirk_msi_intx_disable_bug);
1805DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1806 PCI_DEVICE_ID_TIGON3_5715S,
1807 quirk_msi_intx_disable_bug);
1808
bc38b411
DM		 1809DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
1810 quirk_msi_intx_disable_bug);
1811DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
1812 quirk_msi_intx_disable_bug);
1813DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
1814 quirk_msi_intx_disable_bug);
1815DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
1816 quirk_msi_intx_disable_bug);
1817DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
1818 quirk_msi_intx_disable_bug);
1819DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4395,
1820 quirk_msi_intx_disable_bug);
1821
1822DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
1823 quirk_msi_intx_disable_bug);
1824DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
1825 quirk_msi_intx_disable_bug);
1826DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
1827 quirk_msi_intx_disable_bug);
1828
3f79e107 1829#endif /* CONFIG_PCI_MSI */
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