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PCI: expose function reset capability in sysfs
[net-next-2.6.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>
75e07fc3 25#include <linux/dmi.h>
649426ef 26#include <linux/pci-aspm.h>
32a9a682 27#include <linux/ioport.h>
bc56b9e0 28#include "pci.h"
1da177e4 29
3d137310
TP		 30int isa_dma_bridge_buggy;
31EXPORT_SYMBOL(isa_dma_bridge_buggy);
32int pci_pci_problems;
33EXPORT_SYMBOL(pci_pci_problems);
34int pcie_mch_quirk;
35EXPORT_SYMBOL(pcie_mch_quirk);
36
37#ifdef CONFIG_PCI_QUIRKS
32a9a682 38/*
0cdbe30f
YS		 39 * This quirk function disables memory decoding and releases memory resources
40 * of the device specified by kernel's boot parameter 'pci=resource_alignment='.
32a9a682
YS		 41 * It also rounds up size to specified alignment.
42 * Later on, the kernel will assign page-aligned memory resource back
0cdbe30f 43 * to the device.
32a9a682
YS		 44 */
45static void __devinit quirk_resource_alignment(struct pci_dev *dev)
46{
47 int i;
48 struct resource *r;
49 resource_size_t align, size;
0cdbe30f 50 u16 command;
32a9a682
YS		 51
52 if (!pci_is_reassigndev(dev))
53 return;
54
55 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL &&
56 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
57 dev_warn(&dev->dev,
58 "Can't reassign resources to host bridge.\n");
59 return;
60 }
61
0cdbe30f
YS		 62 dev_info(&dev->dev,
63 "Disabling memory decoding and releasing memory resources.\n");
64 pci_read_config_word(dev, PCI_COMMAND, &command);
65 command &= ~PCI_COMMAND_MEMORY;
66 pci_write_config_word(dev, PCI_COMMAND, command);
32a9a682
YS		 67
68 align = pci_specified_resource_alignment(dev);
69 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) {
70 r = &dev->resource[i];
71 if (!(r->flags & IORESOURCE_MEM))
72 continue;
73 size = resource_size(r);
74 if (size < align) {
75 size = align;
76 dev_info(&dev->dev,
77 "Rounding up size of resource #%d to %#llx.\n",
78 i, (unsigned long long)size);
79 }
80 r->end = size - 1;
81 r->start = 0;
82 }
83 /* Need to disable bridge's resource window,
84 * to enable the kernel to reassign new resource
85 * window later on.
86 */
87 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
88 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
89 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
90 r = &dev->resource[i];
91 if (!(r->flags & IORESOURCE_MEM))
92 continue;
93 r->end = resource_size(r) - 1;
94 r->start = 0;
95 }
96 pci_disable_bridge_window(dev);
97 }
98}
99DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment);
100
bd8481e1
DT		 101/* The Mellanox Tavor device gives false positive parity errors
102 * Mark this device with a broken_parity_status, to allow
103 * PCI scanning code to "skip" this now blacklisted device.
104 */
105static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
106{
107 dev->broken_parity_status = 1; /* This device gives false positives */
108}
109DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
110DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
111
1da177e4
LT		 112/* Deal with broken BIOS'es that neglect to enable passive release,
113 which can cause problems in combination with the 82441FX/PPro MTRRs */
1597cacb 114static void quirk_passive_release(struct pci_dev *dev)
1da177e4
LT		 115{
116 struct pci_dev *d = NULL;
117 unsigned char dlc;
118
119 /* We have to make sure a particular bit is set in the PIIX3
120 ISA bridge, so we have to go out and find it. */
121 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
122 pci_read_config_byte(d, 0x82, &dlc);
123 if (!(dlc & 1<<1)) {
999da9fd 124 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
1da177e4
LT		 125 dlc |= 1<<1;
126 pci_write_config_byte(d, 0x82, dlc);
127 }
128 }
129}
652c538e
AM		 130DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
131DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
1da177e4
LT		 132
133/* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
134 but VIA don't answer queries. If you happen to have good contacts at VIA
135 ask them for me please -- Alan
136
137 This appears to be BIOS not version dependent. So presumably there is a
138 chipset level fix */
1da177e4
LT		 139
140static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
141{
142 if (!isa_dma_bridge_buggy) {
143 isa_dma_bridge_buggy=1;
f0fda801 144 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
1da177e4
LT		 145 }
146}
147 /*
148 * Its not totally clear which chipsets are the problematic ones
149 * We know 82C586 and 82C596 variants are affected.
150 */
652c538e
AM		 151DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
152DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
153DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
154DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
155DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
156DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
157DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
1da177e4 158
1da177e4
LT		 159/*
160 * Chipsets where PCI->PCI transfers vanish or hang
161 */
162static void __devinit quirk_nopcipci(struct pci_dev *dev)
163{
164 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
f0fda801 165 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
1da177e4
LT		 166 pci_pci_problems |= PCIPCI_FAIL;
167 }
168}
652c538e
AM		 169DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
170DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
236561e5
AC		 171
172static void __devinit quirk_nopciamd(struct pci_dev *dev)
173{
174 u8 rev;
175 pci_read_config_byte(dev, 0x08, &rev);
176 if (rev == 0x13) {
177 /* Erratum 24 */
f0fda801 178 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
236561e5
AC		 179 pci_pci_problems |= PCIAGP_FAIL;
180 }
181}
652c538e 182DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
1da177e4
LT		 183
184/*
185 * Triton requires workarounds to be used by the drivers
186 */
187static void __devinit quirk_triton(struct pci_dev *dev)
188{
189 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
f0fda801 190 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
1da177e4
LT		 191 pci_pci_problems |= PCIPCI_TRITON;
192 }
193}
652c538e
AM		 194DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
195DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
196DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
197DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
1da177e4
LT		 198
199/*
200 * VIA Apollo KT133 needs PCI latency patch
201 * Made according to a windows driver based patch by George E. Breese
202 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
203 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
204 * the info on which Mr Breese based his work.
205 *
206 * Updated based on further information from the site and also on
207 * information provided by VIA
208 */
1597cacb 209static void quirk_vialatency(struct pci_dev *dev)
1da177e4
LT		 210{
211 struct pci_dev *p;
1da177e4
LT		 212 u8 busarb;
213 /* Ok we have a potential problem chipset here. Now see if we have
214 a buggy southbridge */
215
216 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
217 if (p!=NULL) {
1da177e4
LT		 218 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
219 /* Check for buggy part revisions */
2b1afa87 220 if (p->revision < 0x40 || p->revision > 0x42)
1da177e4
LT		 221 goto exit;
222 } else {
223 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
224 if (p==NULL) /* No problem parts */
225 goto exit;
1da177e4 226 /* Check for buggy part revisions */
2b1afa87 227 if (p->revision < 0x10 || p->revision > 0x12)
1da177e4
LT		 228 goto exit;
229 }
230
231 /*
232 * Ok we have the problem. Now set the PCI master grant to
233 * occur every master grant. The apparent bug is that under high
234 * PCI load (quite common in Linux of course) you can get data
235 * loss when the CPU is held off the bus for 3 bus master requests
236 * This happens to include the IDE controllers....
237 *
238 * VIA only apply this fix when an SB Live! is present but under
239 * both Linux and Windows this isnt enough, and we have seen
240 * corruption without SB Live! but with things like 3 UDMA IDE
241 * controllers. So we ignore that bit of the VIA recommendation..
242 */
243
244 pci_read_config_byte(dev, 0x76, &busarb);
245 /* Set bit 4 and bi 5 of byte 76 to 0x01
246 "Master priority rotation on every PCI master grant */
247 busarb &= ~(1<<5);
248 busarb |= (1<<4);
249 pci_write_config_byte(dev, 0x76, busarb);
f0fda801 250 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
1da177e4
LT		 251exit:
252 pci_dev_put(p);
253}
652c538e
AM		 254DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
255DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
256DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
1597cacb 257/* Must restore this on a resume from RAM */
652c538e
AM		 258DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
259DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
260DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
1da177e4
LT		 261
262/*
263 * VIA Apollo VP3 needs ETBF on BT848/878
264 */
265static void __devinit quirk_viaetbf(struct pci_dev *dev)
266{
267 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
f0fda801 268 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
1da177e4
LT		 269 pci_pci_problems |= PCIPCI_VIAETBF;
270 }
271}
652c538e 272DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
1da177e4
LT		 273
274static void __devinit quirk_vsfx(struct pci_dev *dev)
275{
276 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
f0fda801 277 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
1da177e4
LT		 278 pci_pci_problems |= PCIPCI_VSFX;
279 }
280}
652c538e 281DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
1da177e4
LT		 282
283/*
284 * Ali Magik requires workarounds to be used by the drivers
285 * that DMA to AGP space. Latency must be set to 0xA and triton
286 * workaround applied too
287 * [Info kindly provided by ALi]
288 */
289static void __init quirk_alimagik(struct pci_dev *dev)
290{
291 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
f0fda801 292 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
1da177e4
LT		 293 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
294 }
295}
652c538e
AM		 296DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
297DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
1da177e4
LT		 298
299/*
300 * Natoma has some interesting boundary conditions with Zoran stuff
301 * at least
302 */
303static void __devinit quirk_natoma(struct pci_dev *dev)
304{
305 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
f0fda801 306 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
1da177e4
LT		 307 pci_pci_problems |= PCIPCI_NATOMA;
308 }
309}
652c538e
AM		 310DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
311DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
312DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
313DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
314DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
315DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
1da177e4
LT		 316
317/*
318 * This chip can cause PCI parity errors if config register 0xA0 is read
319 * while DMAs are occurring.
320 */
321static void __devinit quirk_citrine(struct pci_dev *dev)
322{
323 dev->cfg_size = 0xA0;
324}
652c538e 325DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
1da177e4
LT		 326
327/*
328 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
329 * If it's needed, re-allocate the region.
330 */
331static void __devinit quirk_s3_64M(struct pci_dev *dev)
332{
333 struct resource *r = &dev->resource[0];
334
335 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
336 r->start = 0;
337 r->end = 0x3ffffff;
338 }
339}
652c538e
AM		 340DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
341DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
1da177e4 342
6693e74a
LT		 343static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
344 unsigned size, int nr, const char *name)
1da177e4
LT		 345{
346 region &= ~(size-1);
347 if (region) {
085ae41f 348 struct pci_bus_region bus_region;
1da177e4
LT		 349 struct resource *res = dev->resource + nr;
350
351 res->name = pci_name(dev);
352 res->start = region;
353 res->end = region + size - 1;
354 res->flags = IORESOURCE_IO;
085ae41f
DM		 355
356 /* Convert from PCI bus to resource space. */
357 bus_region.start = res->start;
358 bus_region.end = res->end;
359 pcibios_bus_to_resource(dev, res, &bus_region);
360
1da177e4 361 pci_claim_resource(dev, nr);
f0fda801 362 dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
1da177e4
LT		 363 }
364}
365
366/*
367 * ATI Northbridge setups MCE the processor if you even
368 * read somewhere between 0x3b0->0x3bb or read 0x3d3
369 */
370static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
371{
f0fda801 372 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
1da177e4
LT		 373 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
374 request_region(0x3b0, 0x0C, "RadeonIGP");
375 request_region(0x3d3, 0x01, "RadeonIGP");
376}
652c538e 377DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
1da177e4
LT		 378
379/*
380 * Let's make the southbridge information explicit instead
381 * of having to worry about people probing the ACPI areas,
382 * for example.. (Yes, it happens, and if you read the wrong
383 * ACPI register it will put the machine to sleep with no
384 * way of waking it up again. Bummer).
385 *
386 * ALI M7101: Two IO regions pointed to by words at
387 * 0xE0 (64 bytes of ACPI registers)
388 * 0xE2 (32 bytes of SMB registers)
389 */
390static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
391{
392 u16 region;
393
394 pci_read_config_word(dev, 0xE0, &region);
6693e74a 395 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
1da177e4 396 pci_read_config_word(dev, 0xE2, &region);
6693e74a 397 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
1da177e4 398}
652c538e 399DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
1da177e4 400
6693e74a
LT		 401static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
402{
403 u32 devres;
404 u32 mask, size, base;
405
406 pci_read_config_dword(dev, port, &devres);
407 if ((devres & enable) != enable)
408 return;
409 mask = (devres >> 16) & 15;
410 base = devres & 0xffff;
411 size = 16;
412 for (;;) {
413 unsigned bit = size >> 1;
414 if ((bit & mask) == bit)
415 break;
416 size = bit;
417 }
418 /*
419 * For now we only print it out. Eventually we'll want to
420 * reserve it (at least if it's in the 0x1000+ range), but
421 * let's get enough confirmation reports first.
422 */
423 base &= -size;
f0fda801 424 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
6693e74a
LT		 425}
426
427static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
428{
429 u32 devres;
430 u32 mask, size, base;
431
432 pci_read_config_dword(dev, port, &devres);
433 if ((devres & enable) != enable)
434 return;
435 base = devres & 0xffff0000;
436 mask = (devres & 0x3f) << 16;
437 size = 128 << 16;
438 for (;;) {
439 unsigned bit = size >> 1;
440 if ((bit & mask) == bit)
441 break;
442 size = bit;
443 }
444 /*
445 * For now we only print it out. Eventually we'll want to
446 * reserve it, but let's get enough confirmation reports first.
447 */
448 base &= -size;
f0fda801 449 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
6693e74a
LT		 450}
451
1da177e4
LT		 452/*
453 * PIIX4 ACPI: Two IO regions pointed to by longwords at
454 * 0x40 (64 bytes of ACPI registers)
08db2a70 455 * 0x90 (16 bytes of SMB registers)
6693e74a 456 * and a few strange programmable PIIX4 device resources.
1da177e4
LT		 457 */
458static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
459{
6693e74a 460 u32 region, res_a;
1da177e4
LT		 461
462 pci_read_config_dword(dev, 0x40, &region);
6693e74a 463 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
1da177e4 464 pci_read_config_dword(dev, 0x90, &region);
08db2a70 465 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
6693e74a
LT		 466
467 /* Device resource A has enables for some of the other ones */
468 pci_read_config_dword(dev, 0x5c, &res_a);
469
470 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
471 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
472
473 /* Device resource D is just bitfields for static resources */
474
475 /* Device 12 enabled? */
476 if (res_a & (1 << 29)) {
477 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
478 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
479 }
480 /* Device 13 enabled? */
481 if (res_a & (1 << 30)) {
482 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
483 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
484 }
485 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
486 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
1da177e4 487}
652c538e
AM		 488DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
489DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
1da177e4
LT		 490
491/*
492 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
493 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
494 * 0x58 (64 bytes of GPIO I/O space)
495 */
496static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
497{
498 u32 region;
499
500 pci_read_config_dword(dev, 0x40, &region);
6693e74a 501 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
1da177e4
LT		 502
503 pci_read_config_dword(dev, 0x58, &region);
6693e74a 504 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
1da177e4 505}
652c538e
AM		 506DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
507DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
508DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
509DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
510DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
511DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
512DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
513DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
514DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
515DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
1da177e4 516
894886e5 517static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
2cea752f
RM		 518{
519 u32 region;
520
521 pci_read_config_dword(dev, 0x40, &region);
522 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
523
524 pci_read_config_dword(dev, 0x48, &region);
525 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
526}
894886e5
LT		 527
528static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
529{
530 u32 val;
531 u32 size, base;
532
533 pci_read_config_dword(dev, reg, &val);
534
535 /* Enabled? */
536 if (!(val & 1))
537 return;
538 base = val & 0xfffc;
539 if (dynsize) {
540 /*
541 * This is not correct. It is 16, 32 or 64 bytes depending on
542 * register D31:F0:ADh bits 5:4.
543 *
544 * But this gets us at least _part_ of it.
545 */
546 size = 16;
547 } else {
548 size = 128;
549 }
550 base &= ~(size-1);
551
552 /* Just print it out for now. We should reserve it after more debugging */
553 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
554}
555
556static void __devinit quirk_ich6_lpc(struct pci_dev *dev)
557{
558 /* Shared ACPI/GPIO decode with all ICH6+ */
559 ich6_lpc_acpi_gpio(dev);
560
561 /* ICH6-specific generic IO decode */
562 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
563 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
564}
565DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
566DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
567
568static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
569{
570 u32 val;
571 u32 mask, base;
572
573 pci_read_config_dword(dev, reg, &val);
574
575 /* Enabled? */
576 if (!(val & 1))
577 return;
578
579 /*
580 * IO base in bits 15:2, mask in bits 23:18, both
581 * are dword-based
582 */
583 base = val & 0xfffc;
584 mask = (val >> 16) & 0xfc;
585 mask |= 3;
586
587 /* Just print it out for now. We should reserve it after more debugging */
588 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
589}
590
591/* ICH7-10 has the same common LPC generic IO decode registers */
592static void __devinit quirk_ich7_lpc(struct pci_dev *dev)
593{
594 /* We share the common ACPI/DPIO decode with ICH6 */
595 ich6_lpc_acpi_gpio(dev);
596
597 /* And have 4 ICH7+ generic decodes */
598 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
599 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
600 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
601 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
602}
603DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
604DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
605DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
606DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
607DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
608DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
609DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
610DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
611DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
612DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
613DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
614DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
615DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
2cea752f 616
1da177e4
LT		 617/*
618 * VIA ACPI: One IO region pointed to by longword at
619 * 0x48 or 0x20 (256 bytes of ACPI registers)
620 */
621static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
622{
1da177e4
LT		 623 u32 region;
624
651472fb 625 if (dev->revision & 0x10) {
1da177e4
LT		 626 pci_read_config_dword(dev, 0x48, &region);
627 region &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 628 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
1da177e4
LT		 629 }
630}
652c538e 631DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
1da177e4
LT		 632
633/*
634 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
635 * 0x48 (256 bytes of ACPI registers)
636 * 0x70 (128 bytes of hardware monitoring register)
637 * 0x90 (16 bytes of SMB registers)
638 */
639static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
640{
641 u16 hm;
642 u32 smb;
643
644 quirk_vt82c586_acpi(dev);
645
646 pci_read_config_word(dev, 0x70, &hm);
647 hm &= PCI_BASE_ADDRESS_IO_MASK;
02f313b2 648 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
1da177e4
LT		 649
650 pci_read_config_dword(dev, 0x90, &smb);
651 smb &= PCI_BASE_ADDRESS_IO_MASK;
02f313b2 652 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
1da177e4 653}
652c538e 654DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
1da177e4 655
6d85f29b
IK		 656/*
657 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
658 * 0x88 (128 bytes of power management registers)
659 * 0xd0 (16 bytes of SMB registers)
660 */
661static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
662{
663 u16 pm, smb;
664
665 pci_read_config_word(dev, 0x88, &pm);
666 pm &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 667 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
6d85f29b
IK		 668
669 pci_read_config_word(dev, 0xd0, &smb);
670 smb &= PCI_BASE_ADDRESS_IO_MASK;
6693e74a 671 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
6d85f29b
IK		 672}
673DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
674
1da177e4
LT		 675
676#ifdef CONFIG_X86_IO_APIC
677
678#include <asm/io_apic.h>
679
680/*
681 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
682 * devices to the external APIC.
683 *
684 * TODO: When we have device-specific interrupt routers,
685 * this code will go away from quirks.
686 */
1597cacb 687static void quirk_via_ioapic(struct pci_dev *dev)
1da177e4
LT		 688{
689 u8 tmp;
690
691 if (nr_ioapics < 1)
692 tmp = 0; /* nothing routed to external APIC */
693 else
694 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
695
f0fda801 696 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
1da177e4
LT		 697 tmp == 0 ? "Disa" : "Ena");
698
699 /* Offset 0x58: External APIC IRQ output control */
700 pci_write_config_byte (dev, 0x58, tmp);
701}
652c538e 702DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
e1a2a51e 703DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
1da177e4 704
a1740913
KW		 705/*
706 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
707 * This leads to doubled level interrupt rates.
708 * Set this bit to get rid of cycle wastage.
709 * Otherwise uncritical.
710 */
1597cacb 711static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
a1740913
KW		 712{
713 u8 misc_control2;
714#define BYPASS_APIC_DEASSERT 8
715
716 pci_read_config_byte(dev, 0x5B, &misc_control2);
717 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
f0fda801 718 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
a1740913
KW		 719 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
720 }
721}
722DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
e1a2a51e 723DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
a1740913 724
1da177e4
LT		 725/*
726 * The AMD io apic can hang the box when an apic irq is masked.
727 * We check all revs >= B0 (yet not in the pre production!) as the bug
728 * is currently marked NoFix
729 *
730 * We have multiple reports of hangs with this chipset that went away with
236561e5 731 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1da177e4
LT		 732 * of course. However the advice is demonstrably good even if so..
733 */
734static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
735{
44c10138 736 if (dev->revision >= 0x02) {
f0fda801 737 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
738 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
1da177e4
LT		 739 }
740}
652c538e 741DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1da177e4
LT		 742
743static void __init quirk_ioapic_rmw(struct pci_dev *dev)
744{
745 if (dev->devfn == 0 && dev->bus->number == 0)
746 sis_apic_bug = 1;
747}
652c538e 748DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
1da177e4
LT		 749#endif /* CONFIG_X86_IO_APIC */
750
d556ad4b
PO		 751/*
752 * Some settings of MMRBC can lead to data corruption so block changes.
753 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
754 */
755static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
756{
aa288d4d 757 if (dev->subordinate && dev->revision <= 0x12) {
f0fda801 758 dev_info(&dev->dev, "AMD8131 rev %x detected; "
759 "disabling PCI-X MMRBC\n", dev->revision);
d556ad4b
PO		 760 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
761 }
762}
763DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1da177e4 764
1da177e4
LT		 765/*
766 * FIXME: it is questionable that quirk_via_acpi
767 * is needed. It shows up as an ISA bridge, and does not
768 * support the PCI_INTERRUPT_LINE register at all. Therefore
769 * it seems like setting the pci_dev's 'irq' to the
770 * value of the ACPI SCI interrupt is only done for convenience.
771 * -jgarzik
772 */
773static void __devinit quirk_via_acpi(struct pci_dev *d)
774{
775 /*
776 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
777 */
778 u8 irq;
779 pci_read_config_byte(d, 0x42, &irq);
780 irq &= 0xf;
781 if (irq && (irq != 2))
782 d->irq = irq;
783}
652c538e
AM		 784DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
785DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1da177e4 786
09d6029f
DD		 787
788/*
1597cacb 789 * VIA bridges which have VLink
09d6029f 790 */
1597cacb 791
c06bb5d4
JD		 792static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
793
794static void quirk_via_bridge(struct pci_dev *dev)
795{
796 /* See what bridge we have and find the device ranges */
797 switch (dev->device) {
798 case PCI_DEVICE_ID_VIA_82C686:
cb7468ef
JD		 799 /* The VT82C686 is special, it attaches to PCI and can have
800 any device number. All its subdevices are functions of
801 that single device. */
802 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
803 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
c06bb5d4
JD		 804 break;
805 case PCI_DEVICE_ID_VIA_8237:
806 case PCI_DEVICE_ID_VIA_8237A:
807 via_vlink_dev_lo = 15;
808 break;
809 case PCI_DEVICE_ID_VIA_8235:
810 via_vlink_dev_lo = 16;
811 break;
812 case PCI_DEVICE_ID_VIA_8231:
813 case PCI_DEVICE_ID_VIA_8233_0:
814 case PCI_DEVICE_ID_VIA_8233A:
815 case PCI_DEVICE_ID_VIA_8233C_0:
816 via_vlink_dev_lo = 17;
817 break;
818 }
819}
820DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
821DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
822DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
823DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
824DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
825DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
826DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
827DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
09d6029f 828
1597cacb
AC		 829/**
830 * quirk_via_vlink - VIA VLink IRQ number update
831 * @dev: PCI device
832 *
833 * If the device we are dealing with is on a PIC IRQ we need to
834 * ensure that the IRQ line register which usually is not relevant
835 * for PCI cards, is actually written so that interrupts get sent
c06bb5d4
JD		 836 * to the right place.
837 * We only do this on systems where a VIA south bridge was detected,
838 * and only for VIA devices on the motherboard (see quirk_via_bridge
839 * above).
1597cacb
AC		 840 */
841
842static void quirk_via_vlink(struct pci_dev *dev)
25be5e6c
LB		 843{
844 u8 irq, new_irq;
845
c06bb5d4
JD		 846 /* Check if we have VLink at all */
847 if (via_vlink_dev_lo == -1)
09d6029f
DD		 848 return;
849
850 new_irq = dev->irq;
851
852 /* Don't quirk interrupts outside the legacy IRQ range */
853 if (!new_irq || new_irq > 15)
854 return;
855
1597cacb 856 /* Internal device ? */
c06bb5d4
JD		 857 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
858 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1597cacb
AC		 859 return;
860
861 /* This is an internal VLink device on a PIC interrupt. The BIOS
862 ought to have set this but may not have, so we redo it */
863
25be5e6c
LB		 864 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
865 if (new_irq != irq) {
f0fda801 866 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
867 irq, new_irq);
25be5e6c
LB		 868 udelay(15); /* unknown if delay really needed */
869 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
870 }
871}
1597cacb 872DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
25be5e6c 873
1da177e4
LT		 874/*
875 * VIA VT82C598 has its device ID settable and many BIOSes
876 * set it to the ID of VT82C597 for backward compatibility.
877 * We need to switch it off to be able to recognize the real
878 * type of the chip.
879 */
880static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
881{
882 pci_write_config_byte(dev, 0xfc, 0);
883 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
884}
652c538e 885DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1da177e4
LT		 886
887/*
888 * CardBus controllers have a legacy base address that enables them
889 * to respond as i82365 pcmcia controllers. We don't want them to
890 * do this even if the Linux CardBus driver is not loaded, because
891 * the Linux i82365 driver does not (and should not) handle CardBus.
892 */
1597cacb 893static void quirk_cardbus_legacy(struct pci_dev *dev)
1da177e4
LT		 894{
895 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
896 return;
897 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
898}
899DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
e1a2a51e 900DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
1da177e4
LT		 901
902/*
903 * Following the PCI ordering rules is optional on the AMD762. I'm not
904 * sure what the designers were smoking but let's not inhale...
905 *
906 * To be fair to AMD, it follows the spec by default, its BIOS people
907 * who turn it off!
908 */
1597cacb 909static void quirk_amd_ordering(struct pci_dev *dev)
1da177e4
LT		 910{
911 u32 pcic;
912 pci_read_config_dword(dev, 0x4C, &pcic);
913 if ((pcic&6)!=6) {
914 pcic |= 6;
f0fda801 915 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1da177e4
LT		 916 pci_write_config_dword(dev, 0x4C, pcic);
917 pci_read_config_dword(dev, 0x84, &pcic);
918 pcic |= (1<<23); /* Required in this mode */
919 pci_write_config_dword(dev, 0x84, pcic);
920 }
921}
652c538e 922DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
e1a2a51e 923DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1da177e4
LT		 924
925/*
926 * DreamWorks provided workaround for Dunord I-3000 problem
927 *
928 * This card decodes and responds to addresses not apparently
929 * assigned to it. We force a larger allocation to ensure that
930 * nothing gets put too close to it.
931 */
932static void __devinit quirk_dunord ( struct pci_dev * dev )
933{
934 struct resource *r = &dev->resource [1];
935 r->start = 0;
936 r->end = 0xffffff;
937}
652c538e 938DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1da177e4
LT		 939
940/*
941 * i82380FB mobile docking controller: its PCI-to-PCI bridge
942 * is subtractive decoding (transparent), and does indicate this
943 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
944 * instead of 0x01.
945 */
946static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
947{
948 dev->transparent = 1;
949}
652c538e
AM		 950DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
951DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1da177e4
LT		 952
953/*
954 * Common misconfiguration of the MediaGX/Geode PCI master that will
955 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
956 * datasheets found at http://www.national.com/ds/GX for info on what
957 * these bits do. <christer@weinigel.se>
958 */
1597cacb 959static void quirk_mediagx_master(struct pci_dev *dev)
1da177e4
LT		 960{
961 u8 reg;
962 pci_read_config_byte(dev, 0x41, &reg);
963 if (reg & 2) {
964 reg &= ~2;
f0fda801 965 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
1da177e4
LT		 966 pci_write_config_byte(dev, 0x41, reg);
967 }
968}
652c538e
AM		 969DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
970DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1da177e4 971
1da177e4
LT		 972/*
973 * Ensure C0 rev restreaming is off. This is normally done by
974 * the BIOS but in the odd case it is not the results are corruption
975 * hence the presence of a Linux check
976 */
1597cacb 977static void quirk_disable_pxb(struct pci_dev *pdev)
1da177e4
LT		 978{
979 u16 config;
1da177e4 980
44c10138 981 if (pdev->revision != 0x04) /* Only C0 requires this */
1da177e4
LT		 982 return;
983 pci_read_config_word(pdev, 0x40, &config);
984 if (config & (1<<6)) {
985 config &= ~(1<<6);
986 pci_write_config_word(pdev, 0x40, config);
f0fda801 987 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
1da177e4
LT		 988 }
989}
652c538e 990DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
e1a2a51e 991DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1da177e4 992
05a7d22b 993static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
ab17443a 994{
05a7d22b
CC		 995 /* set sb600/sb700/sb800 sata to ahci mode */
996 u8 tmp;
ab17443a 997
05a7d22b
CC		 998 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
999 if (tmp == 0x01) {
ab17443a
CH		 1000 pci_read_config_byte(pdev, 0x40, &tmp);
1001 pci_write_config_byte(pdev, 0x40, tmp|1);
1002 pci_write_config_byte(pdev, 0x9, 1);
1003 pci_write_config_byte(pdev, 0xa, 6);
1004 pci_write_config_byte(pdev, 0x40, tmp);
1005
c9f89475 1006 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
05a7d22b 1007 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
ab17443a
CH		 1008 }
1009}
05a7d22b 1010DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
e1a2a51e 1011DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
05a7d22b 1012DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
e1a2a51e 1013DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
ab17443a 1014
1da177e4
LT		 1015/*
1016 * Serverworks CSB5 IDE does not fully support native mode
1017 */
1018static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
1019{
1020 u8 prog;
1021 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1022 if (prog & 5) {
1023 prog &= ~5;
1024 pdev->class &= ~5;
1025 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
368c73d4 1026 /* PCI layer will sort out resources */
1da177e4
LT		 1027 }
1028}
652c538e 1029DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1da177e4
LT		 1030
1031/*
1032 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1033 */
1034static void __init quirk_ide_samemode(struct pci_dev *pdev)
1035{
1036 u8 prog;
1037
1038 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1039
1040 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
f0fda801 1041 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1da177e4
LT		 1042 prog &= ~5;
1043 pdev->class &= ~5;
1044 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1da177e4
LT		 1045 }
1046}
368c73d4 1047DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1da177e4 1048
979b1791
AC		 1049/*
1050 * Some ATA devices break if put into D3
1051 */
1052
1053static void __devinit quirk_no_ata_d3(struct pci_dev *pdev)
1054{
1055 /* Quirk the legacy ATA devices only. The AHCI ones are ok */
1056 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE)
1057 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1058}
1059DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3);
1060DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3);
7a661c6f
AC		 1061/* ALi loses some register settings that we cannot then restore */
1062DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, quirk_no_ata_d3);
1063/* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1064 occur when mode detecting */
1065DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3);
979b1791 1066
1da177e4
LT		 1067/* This was originally an Alpha specific thing, but it really fits here.
1068 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1069 */
1070static void __init quirk_eisa_bridge(struct pci_dev *dev)
1071{
1072 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1073}
652c538e 1074DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1da177e4 1075
7daa0c4f 1076
1da177e4
LT		 1077/*
1078 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1079 * is not activated. The myth is that Asus said that they do not want the
1080 * users to be irritated by just another PCI Device in the Win98 device
1081 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1082 * package 2.7.0 for details)
1083 *
1084 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1085 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
d7698edc 1086 * becomes necessary to do this tweak in two steps -- the chosen trigger
1087 * is either the Host bridge (preferred) or on-board VGA controller.
9208ee82
JD		 1088 *
1089 * Note that we used to unhide the SMBus that way on Toshiba laptops
1090 * (Satellite A40 and Tecra M2) but then found that the thermal management
1091 * was done by SMM code, which could cause unsynchronized concurrent
1092 * accesses to the SMBus registers, with potentially bad effects. Thus you
1093 * should be very careful when adding new entries: if SMM is accessing the
1094 * Intel SMBus, this is a very good reason to leave it hidden.
a99acc83
JD		 1095 *
1096 * Likewise, many recent laptops use ACPI for thermal management. If the
1097 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1098 * natively, and keeping the SMBus hidden is the right thing to do. If you
1099 * are about to add an entry in the table below, please first disassemble
1100 * the DSDT and double-check that there is no code accessing the SMBus.
1da177e4 1101 */
9d24a81e 1102static int asus_hides_smbus;
1da177e4
LT		 1103
1104static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
1105{
1106 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1107 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1108 switch(dev->subsystem_device) {
a00db371 1109 case 0x8025: /* P4B-LX */
1da177e4
LT		 1110 case 0x8070: /* P4B */
1111 case 0x8088: /* P4B533 */
1112 case 0x1626: /* L3C notebook */
1113 asus_hides_smbus = 1;
1114 }
2f2d39d2 1115 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1da177e4
LT		 1116 switch(dev->subsystem_device) {
1117 case 0x80b1: /* P4GE-V */
1118 case 0x80b2: /* P4PE */
1119 case 0x8093: /* P4B533-V */
1120 asus_hides_smbus = 1;
1121 }
2f2d39d2 1122 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1da177e4
LT		 1123 switch(dev->subsystem_device) {
1124 case 0x8030: /* P4T533 */
1125 asus_hides_smbus = 1;
1126 }
2f2d39d2 1127 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1da177e4
LT		 1128 switch (dev->subsystem_device) {
1129 case 0x8070: /* P4G8X Deluxe */
1130 asus_hides_smbus = 1;
1131 }
2f2d39d2 1132 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
321311af
JD		 1133 switch (dev->subsystem_device) {
1134 case 0x80c9: /* PU-DLS */
1135 asus_hides_smbus = 1;
1136 }
2f2d39d2 1137 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1da177e4
LT		 1138 switch (dev->subsystem_device) {
1139 case 0x1751: /* M2N notebook */
1140 case 0x1821: /* M5N notebook */
4096ed0f 1141 case 0x1897: /* A6L notebook */
1da177e4
LT		 1142 asus_hides_smbus = 1;
1143 }
2f2d39d2 1144 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1da177e4
LT		 1145 switch (dev->subsystem_device) {
1146 case 0x184b: /* W1N notebook */
1147 case 0x186a: /* M6Ne notebook */
1148 asus_hides_smbus = 1;
1149 }
2f2d39d2 1150 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
2e45785c
JD		 1151 switch (dev->subsystem_device) {
1152 case 0x80f2: /* P4P800-X */
1153 asus_hides_smbus = 1;
1154 }
2f2d39d2 1155 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
acc06632
RM		 1156 switch (dev->subsystem_device) {
1157 case 0x1882: /* M6V notebook */
2d1e1c75 1158 case 0x1977: /* A6VA notebook */
acc06632
RM		 1159 asus_hides_smbus = 1;
1160 }
1da177e4
LT		 1161 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1162 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1163 switch(dev->subsystem_device) {
1164 case 0x088C: /* HP Compaq nc8000 */
1165 case 0x0890: /* HP Compaq nc6000 */
1166 asus_hides_smbus = 1;
1167 }
2f2d39d2 1168 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1da177e4
LT		 1169 switch (dev->subsystem_device) {
1170 case 0x12bc: /* HP D330L */
e3b1bd57 1171 case 0x12bd: /* HP D530 */
74c57428 1172 case 0x006a: /* HP Compaq nx9500 */
1da177e4
LT		 1173 asus_hides_smbus = 1;
1174 }
677cc644
JD		 1175 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1176 switch (dev->subsystem_device) {
1177 case 0x12bf: /* HP xw4100 */
1178 asus_hides_smbus = 1;
1179 }
1da177e4
LT		 1180 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1181 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1182 switch(dev->subsystem_device) {
1183 case 0xC00C: /* Samsung P35 notebook */
1184 asus_hides_smbus = 1;
1185 }
c87f883e
RIZ		 1186 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1187 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1188 switch(dev->subsystem_device) {
1189 case 0x0058: /* Compaq Evo N620c */
1190 asus_hides_smbus = 1;
1191 }
d7698edc 1192 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1193 switch(dev->subsystem_device) {
1194 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1195 /* Motherboard doesn't have Host bridge
1196 * subvendor/subdevice IDs, therefore checking
1197 * its on-board VGA controller */
1198 asus_hides_smbus = 1;
1199 }
8293b0f6 1200 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
10260d9a
JD		 1201 switch(dev->subsystem_device) {
1202 case 0x00b8: /* Compaq Evo D510 CMT */
1203 case 0x00b9: /* Compaq Evo D510 SFF */
8293b0f6
DS		 1204 /* Motherboard doesn't have Host bridge
1205 * subvendor/subdevice IDs and on-board VGA
1206 * controller is disabled if an AGP card is
1207 * inserted, therefore checking USB UHCI
1208 * Controller #1 */
10260d9a
JD		 1209 asus_hides_smbus = 1;
1210 }
27e46859
KH		 1211 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1212 switch (dev->subsystem_device) {
1213 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1214 /* Motherboard doesn't have host bridge
1215 * subvendor/subdevice IDs, therefore checking
1216 * its on-board VGA controller */
1217 asus_hides_smbus = 1;
1218 }
1da177e4
LT		 1219 }
1220}
652c538e
AM		 1221DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1222DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1223DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1224DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
677cc644 1225DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
652c538e
AM		 1226DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1227DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1228DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1229DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1230DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1231
1232DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
8293b0f6 1233DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
27e46859 1234DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
d7698edc 1235
1597cacb 1236static void asus_hides_smbus_lpc(struct pci_dev *dev)
1da177e4
LT		 1237{
1238 u16 val;
1239
1240 if (likely(!asus_hides_smbus))
1241 return;
1242
1243 pci_read_config_word(dev, 0xF2, &val);
1244 if (val & 0x8) {
1245 pci_write_config_word(dev, 0xF2, val & (~0x8));
1246 pci_read_config_word(dev, 0xF2, &val);
1247 if (val & 0x8)
f0fda801 1248 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1da177e4 1249 else
f0fda801 1250 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1da177e4
LT		 1251 }
1252}
652c538e
AM		 1253DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1254DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1255DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1256DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1257DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1258DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1259DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
e1a2a51e
RW		 1260DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1261DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1262DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1263DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1264DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1265DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1266DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1597cacb 1267
e1a2a51e
RW		 1268/* It appears we just have one such device. If not, we have a warning */
1269static void __iomem *asus_rcba_base;
1270static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
acc06632 1271{
e1a2a51e 1272 u32 rcba;
acc06632
RM		 1273
1274 if (likely(!asus_hides_smbus))
1275 return;
e1a2a51e
RW		 1276 WARN_ON(asus_rcba_base);
1277
acc06632 1278 pci_read_config_dword(dev, 0xF0, &rcba);
e1a2a51e
RW		 1279 /* use bits 31:14, 16 kB aligned */
1280 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1281 if (asus_rcba_base == NULL)
1282 return;
1283}
1284
1285static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1286{
1287 u32 val;
1288
1289 if (likely(!asus_hides_smbus || !asus_rcba_base))
1290 return;
1291 /* read the Function Disable register, dword mode only */
1292 val = readl(asus_rcba_base + 0x3418);
1293 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1294}
1295
1296static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1297{
1298 if (likely(!asus_hides_smbus || !asus_rcba_base))
1299 return;
1300 iounmap(asus_rcba_base);
1301 asus_rcba_base = NULL;
f0fda801 1302 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
acc06632 1303}
e1a2a51e
RW		 1304
1305static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1306{
1307 asus_hides_smbus_lpc_ich6_suspend(dev);
1308 asus_hides_smbus_lpc_ich6_resume_early(dev);
1309 asus_hides_smbus_lpc_ich6_resume(dev);
1310}
652c538e 1311DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
e1a2a51e
RW		 1312DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1313DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1314DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
ce007ea5 1315
1da177e4
LT		 1316/*
1317 * SiS 96x south bridge: BIOS typically hides SMBus device...
1318 */
1597cacb 1319static void quirk_sis_96x_smbus(struct pci_dev *dev)
1da177e4
LT		 1320{
1321 u8 val = 0;
1da177e4 1322 pci_read_config_byte(dev, 0x77, &val);
2f5c33b3 1323 if (val & 0x10) {
f0fda801 1324 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
2f5c33b3
MH		 1325 pci_write_config_byte(dev, 0x77, val & ~0x10);
1326 }
1da177e4 1327}
652c538e
AM		 1328DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1329DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1330DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1331DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
e1a2a51e
RW		 1332DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1333DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1334DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1335DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1da177e4 1336
1da177e4
LT		 1337/*
1338 * ... This is further complicated by the fact that some SiS96x south
1339 * bridges pretend to be 85C503/5513 instead. In that case see if we
1340 * spotted a compatible north bridge to make sure.
1341 * (pci_find_device doesn't work yet)
1342 *
1343 * We can also enable the sis96x bit in the discovery register..
1344 */
1da177e4
LT		 1345#define SIS_DETECT_REGISTER 0x40
1346
1597cacb 1347static void quirk_sis_503(struct pci_dev *dev)
1da177e4
LT		 1348{
1349 u8 reg;
1350 u16 devid;
1351
1352 pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1353 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1354 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1355 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1356 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1357 return;
1358 }
1359
1da177e4 1360 /*
2f5c33b3
MH		 1361 * Ok, it now shows up as a 96x.. run the 96x quirk by
1362 * hand in case it has already been processed.
1363 * (depends on link order, which is apparently not guaranteed)
1da177e4
LT		 1364 */
1365 dev->device = devid;
2f5c33b3 1366 quirk_sis_96x_smbus(dev);
1da177e4 1367}
652c538e 1368DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
e1a2a51e 1369DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1da177e4 1370
1da177e4 1371
e5548e96
BJD		 1372/*
1373 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1374 * and MC97 modem controller are disabled when a second PCI soundcard is
1375 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1376 * -- bjd
1377 */
1597cacb 1378static void asus_hides_ac97_lpc(struct pci_dev *dev)
e5548e96
BJD		 1379{
1380 u8 val;
1381 int asus_hides_ac97 = 0;
1382
1383 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1384 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1385 asus_hides_ac97 = 1;
1386 }
1387
1388 if (!asus_hides_ac97)
1389 return;
1390
1391 pci_read_config_byte(dev, 0x50, &val);
1392 if (val & 0xc0) {
1393 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1394 pci_read_config_byte(dev, 0x50, &val);
1395 if (val & 0xc0)
f0fda801 1396 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
e5548e96 1397 else
f0fda801 1398 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
e5548e96
BJD		 1399 }
1400}
652c538e 1401DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
e1a2a51e 1402DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1597cacb 1403
77967052 1404#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
15e0c694
AC		 1405
1406/*
1407 * If we are using libata we can drive this chip properly but must
1408 * do this early on to make the additional device appear during
1409 * the PCI scanning.
1410 */
5ee2ae7f 1411static void quirk_jmicron_ata(struct pci_dev *pdev)
15e0c694 1412{
e34bb370 1413 u32 conf1, conf5, class;
15e0c694
AC		 1414 u8 hdr;
1415
1416 /* Only poke fn 0 */
1417 if (PCI_FUNC(pdev->devfn))
1418 return;
1419
5ee2ae7f
TH		 1420 pci_read_config_dword(pdev, 0x40, &conf1);
1421 pci_read_config_dword(pdev, 0x80, &conf5);
15e0c694 1422
5ee2ae7f
TH		 1423 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1424 conf5 &= ~(1 << 24); /* Clear bit 24 */
1425
1426 switch (pdev->device) {
1427 case PCI_DEVICE_ID_JMICRON_JMB360:
1428 /* The controller should be in single function ahci mode */
1429 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1430 break;
1431
1432 case PCI_DEVICE_ID_JMICRON_JMB365:
1433 case PCI_DEVICE_ID_JMICRON_JMB366:
1434 /* Redirect IDE second PATA port to the right spot */
1435 conf5 |= (1 << 24);
1436 /* Fall through */
1437 case PCI_DEVICE_ID_JMICRON_JMB361:
1438 case PCI_DEVICE_ID_JMICRON_JMB363:
1439 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1440 /* Set the class codes correctly and then direct IDE 0 */
3a9e3a51 1441 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
5ee2ae7f
TH		 1442 break;
1443
1444 case PCI_DEVICE_ID_JMICRON_JMB368:
1445 /* The controller should be in single function IDE mode */
1446 conf1 |= 0x00C00000; /* Set 22, 23 */
1447 break;
15e0c694 1448 }
5ee2ae7f
TH		 1449
1450 pci_write_config_dword(pdev, 0x40, conf1);
1451 pci_write_config_dword(pdev, 0x80, conf5);
1452
1453 /* Update pdev accordingly */
1454 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1455 pdev->hdr_type = hdr & 0x7f;
1456 pdev->multifunction = !!(hdr & 0x80);
e34bb370
TH		 1457
1458 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1459 pdev->class = class >> 8;
15e0c694 1460}
5ee2ae7f
TH		 1461DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1462DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1463DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1464DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1465DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1466DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
e1a2a51e
RW		 1467DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1468DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1469DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1470DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1471DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1472DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
15e0c694
AC		 1473
1474#endif
1475
1da177e4
LT		 1476#ifdef CONFIG_X86_IO_APIC
1477static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1478{
1479 int i;
1480
1481 if ((pdev->class >> 8) != 0xff00)
1482 return;
1483
1484 /* the first BAR is the location of the IO APIC...we must
1485 * not touch this (and it's already covered by the fixmap), so
1486 * forcibly insert it into the resource tree */
1487 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1488 insert_resource(&iomem_resource, &pdev->resource[0]);
1489
1490 /* The next five BARs all seem to be rubbish, so just clean
1491 * them out */
1492 for (i=1; i < 6; i++) {
1493 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1494 }
1495
1496}
652c538e 1497DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1da177e4
LT		 1498#endif
1499
1da177e4
LT		 1500static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1501{
1502 pcie_mch_quirk = 1;
1503}
652c538e
AM		 1504DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1505DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1506DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1da177e4 1507
4602b88d
KA		 1508
1509/*
1510 * It's possible for the MSI to get corrupted if shpc and acpi
1511 * are used together on certain PXH-based systems.
1512 */
1513static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1514{
f5f2b131 1515 pci_msi_off(dev);
4602b88d 1516 dev->no_msi = 1;
f0fda801 1517 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
4602b88d
KA		 1518}
1519DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1520DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1521DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1522DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1523DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1524
ffadcc2f
KCA		 1525/*
1526 * Some Intel PCI Express chipsets have trouble with downstream
1527 * device power management.
1528 */
1529static void quirk_intel_pcie_pm(struct pci_dev * dev)
1530{
1531 pci_pm_d3_delay = 120;
1532 dev->no_d1d2 = 1;
1533}
1534
1535DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1536DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1537DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1538DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1539DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1540DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1541DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1542DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1543DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1544DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1545DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1546DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1547DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1548DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1549DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1550DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1551DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1552DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1553DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1554DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1555DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
4602b88d 1556
426b3b8d 1557#ifdef CONFIG_X86_IO_APIC
e1d3a908
SA		 1558/*
1559 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1560 * remap the original interrupt in the linux kernel to the boot interrupt, so
1561 * that a PCI device's interrupt handler is installed on the boot interrupt
1562 * line instead.
1563 */
1564static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1565{
41b9eb26 1566 if (noioapicquirk || noioapicreroute)
e1d3a908
SA		 1567 return;
1568
1569 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1570
1571 printk(KERN_INFO "PCI quirk: reroute interrupts for 0x%04x:0x%04x\n",
1572 dev->vendor, dev->device);
1573 return;
1574}
88d1dce3
OD		 1575DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1576DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1577DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1578DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1579DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1580DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1581DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1582DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1583DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1584DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1585DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1586DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1587DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1588DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1589DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1590DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
e1d3a908 1591
426b3b8d
SA		 1592/*
1593 * On some chipsets we can disable the generation of legacy INTx boot
1594 * interrupts.
1595 */
1596
1597/*
1598 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1599 * 300641-004US, section 5.7.3.
1600 */
1601#define INTEL_6300_IOAPIC_ABAR 0x40
1602#define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1603
1604static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1605{
1606 u16 pci_config_word;
1607
1608 if (noioapicquirk)
1609 return;
1610
1611 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1612 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1613 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1614
1615 printk(KERN_INFO "disabled boot interrupt on device 0x%04x:0x%04x\n",
1616 dev->vendor, dev->device);
1617}
88d1dce3
OD		 1618DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1619DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
77251188
OD		 1620
1621/*
1622 * disable boot interrupts on HT-1000
1623 */
1624#define BC_HT1000_FEATURE_REG 0x64
1625#define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1626#define BC_HT1000_MAP_IDX 0xC00
1627#define BC_HT1000_MAP_DATA 0xC01
1628
1629static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1630{
1631 u32 pci_config_dword;
1632 u8 irq;
1633
1634 if (noioapicquirk)
1635 return;
1636
1637 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1638 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1639 BC_HT1000_PIC_REGS_ENABLE);
1640
1641 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1642 outb(irq, BC_HT1000_MAP_IDX);
1643 outb(0x00, BC_HT1000_MAP_DATA);
1644 }
1645
1646 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1647
1648 printk(KERN_INFO "disabled boot interrupts on PCI device"
1649 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1650}
88d1dce3
OD		 1651DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1652DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
542622da
OD		 1653
1654/*
1655 * disable boot interrupts on AMD and ATI chipsets
1656 */
1657/*
1658 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1659 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1660 * (due to an erratum).
1661 */
1662#define AMD_813X_MISC 0x40
1663#define AMD_813X_NOIOAMODE (1<<0)
bbe19443 1664#define AMD_813X_REV_B2 0x13
542622da
OD		 1665
1666static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1667{
1668 u32 pci_config_dword;
1669
1670 if (noioapicquirk)
1671 return;
bbe19443
SA		 1672 if (dev->revision == AMD_813X_REV_B2)
1673 return;
542622da
OD		 1674
1675 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1676 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1677 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1678
1679 printk(KERN_INFO "disabled boot interrupts on PCI device "
1680 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1681}
88d1dce3
OD		 1682DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1683DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
542622da
OD		 1684
1685#define AMD_8111_PCI_IRQ_ROUTING 0x56
1686
1687static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1688{
1689 u16 pci_config_word;
1690
1691 if (noioapicquirk)
1692 return;
1693
1694 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1695 if (!pci_config_word) {
1696 printk(KERN_INFO "boot interrupts on PCI device 0x%04x:0x%04x "
1697 "already disabled\n",
1698 dev->vendor, dev->device);
1699 return;
1700 }
1701 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1702 printk(KERN_INFO "disabled boot interrupts on PCI device "
1703 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1704}
88d1dce3
OD		 1705DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1706DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
426b3b8d
SA		 1707#endif /* CONFIG_X86_IO_APIC */
1708
33dced2e
SS		 1709/*
1710 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1711 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1712 * Re-allocate the region if needed...
1713 */
1714static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1715{
1716 struct resource *r = &dev->resource[0];
1717
1718 if (r->start & 0x8) {
1719 r->start = 0;
1720 r->end = 0xf;
1721 }
1722}
1723DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1724 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1725 quirk_tc86c001_ide);
1726
1da177e4
LT		 1727static void __devinit quirk_netmos(struct pci_dev *dev)
1728{
1729 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1730 unsigned int num_serial = dev->subsystem_device & 0xf;
1731
1732 /*
1733 * These Netmos parts are multiport serial devices with optional
1734 * parallel ports. Even when parallel ports are present, they
1735 * are identified as class SERIAL, which means the serial driver
1736 * will claim them. To prevent this, mark them as class OTHER.
1737 * These combo devices should be claimed by parport_serial.
1738 *
1739 * The subdevice ID is of the form 0x00PS, where <P> is the number
1740 * of parallel ports and <S> is the number of serial ports.
1741 */
1742 switch (dev->device) {
4c9c1686
JS		 1743 case PCI_DEVICE_ID_NETMOS_9835:
1744 /* Well, this rule doesn't hold for the following 9835 device */
1745 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1746 dev->subsystem_device == 0x0299)
1747 return;
1da177e4
LT		 1748 case PCI_DEVICE_ID_NETMOS_9735:
1749 case PCI_DEVICE_ID_NETMOS_9745:
1da177e4
LT		 1750 case PCI_DEVICE_ID_NETMOS_9845:
1751 case PCI_DEVICE_ID_NETMOS_9855:
1752 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1753 num_parallel) {
f0fda801 1754 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1da177e4
LT		 1755 "%u serial); changing class SERIAL to OTHER "
1756 "(use parport_serial)\n",
1757 dev->device, num_parallel, num_serial);
1758 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1759 (dev->class & 0xff);
1760 }
1761 }
1762}
1763DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1764
16a74744
BH		 1765static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1766{
e64aeccb 1767 u16 command, pmcsr;
16a74744
BH		 1768 u8 __iomem *csr;
1769 u8 cmd_hi;
e64aeccb 1770 int pm;
16a74744
BH		 1771
1772 switch (dev->device) {
1773 /* PCI IDs taken from drivers/net/e100.c */
1774 case 0x1029:
1775 case 0x1030 ... 0x1034:
1776 case 0x1038 ... 0x103E:
1777 case 0x1050 ... 0x1057:
1778 case 0x1059:
1779 case 0x1064 ... 0x106B:
1780 case 0x1091 ... 0x1095:
1781 case 0x1209:
1782 case 0x1229:
1783 case 0x2449:
1784 case 0x2459:
1785 case 0x245D:
1786 case 0x27DC:
1787 break;
1788 default:
1789 return;
1790 }
1791
1792 /*
1793 * Some firmware hands off the e100 with interrupts enabled,
1794 * which can cause a flood of interrupts if packets are
1795 * received before the driver attaches to the device. So
1796 * disable all e100 interrupts here. The driver will
1797 * re-enable them when it's ready.
1798 */
1799 pci_read_config_word(dev, PCI_COMMAND, &command);
16a74744 1800
1bef7dc0 1801 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
16a74744
BH		 1802 return;
1803
e64aeccb
IK		 1804 /*
1805 * Check that the device is in the D0 power state. If it's not,
1806 * there is no point to look any further.
1807 */
1808 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1809 if (pm) {
1810 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1811 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1812 return;
1813 }
1814
1bef7dc0
BH		 1815 /* Convert from PCI bus to resource space. */
1816 csr = ioremap(pci_resource_start(dev, 0), 8);
16a74744 1817 if (!csr) {
f0fda801 1818 dev_warn(&dev->dev, "Can't map e100 registers\n");
16a74744
BH		 1819 return;
1820 }
1821
1822 cmd_hi = readb(csr + 3);
1823 if (cmd_hi == 0) {
f0fda801 1824 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1825 "disabling\n");
16a74744
BH		 1826 writeb(1, csr + 3);
1827 }
1828
1829 iounmap(csr);
1830}
4e68fc97 1831DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
a5312e28 1832
649426ef
AD		 1833/*
1834 * The 82575 and 82598 may experience data corruption issues when transitioning
1835 * out of L0S. To prevent this we need to disable L0S on the pci-e link
1836 */
1837static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev)
1838{
1839 dev_info(&dev->dev, "Disabling L0s\n");
1840 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1841}
1842DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1843DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1844DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1845DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1846DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1847DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1848DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1849DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1850DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1851DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1852DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1853DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1854DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1855DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1856
a5312e28
IK		 1857static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1858{
1859 /* rev 1 ncr53c810 chips don't set the class at all which means
1860 * they don't get their resources remapped. Fix that here.
1861 */
1862
1863 if (dev->class == PCI_CLASS_NOT_DEFINED) {
f0fda801 1864 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
a5312e28
IK		 1865 dev->class = PCI_CLASS_STORAGE_SCSI;
1866 }
1867}
1868DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1869
9d265124
DY		 1870/* Enable 1k I/O space granularity on the Intel P64H2 */
1871static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1872{
1873 u16 en1k;
1874 u8 io_base_lo, io_limit_lo;
1875 unsigned long base, limit;
1876 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1877
1878 pci_read_config_word(dev, 0x40, &en1k);
1879
1880 if (en1k & 0x200) {
f0fda801 1881 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
9d265124
DY		 1882
1883 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1884 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1885 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1886 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1887
1888 if (base <= limit) {
1889 res->start = base;
1890 res->end = limit + 0x3ff;
1891 }
1892 }
1893}
1894DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1895
15a260d5
DY		 1896/* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1897 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1898 * in drivers/pci/setup-bus.c
1899 */
1900static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1901{
1902 u16 en1k, iobl_adr, iobl_adr_1k;
1903 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1904
1905 pci_read_config_word(dev, 0x40, &en1k);
1906
1907 if (en1k & 0x200) {
1908 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1909
1910 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1911
1912 if (iobl_adr != iobl_adr_1k) {
f0fda801 1913 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
15a260d5
DY		 1914 iobl_adr,iobl_adr_1k);
1915 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1916 }
1917 }
1918}
1919DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1920
cf34a8e0
BG		 1921/* Under some circumstances, AER is not linked with extended capabilities.
1922 * Force it to be linked by setting the corresponding control bit in the
1923 * config space.
1924 */
1597cacb 1925static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
cf34a8e0
BG		 1926{
1927 uint8_t b;
1928 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1929 if (!(b & 0x20)) {
1930 pci_write_config_byte(dev, 0xf41, b | 0x20);
f0fda801 1931 dev_info(&dev->dev,
1932 "Linking AER extended capability\n");
cf34a8e0
BG		 1933 }
1934 }
1935}
1936DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1937 quirk_nvidia_ck804_pcie_aer_ext_cap);
e1a2a51e 1938DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1597cacb 1939 quirk_nvidia_ck804_pcie_aer_ext_cap);
cf34a8e0 1940
53a9bf42
TY		 1941static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1942{
1943 /*
1944 * Disable PCI Bus Parking and PCI Master read caching on CX700
1945 * which causes unspecified timing errors with a VT6212L on the PCI
1946 * bus leading to USB2.0 packet loss. The defaults are that these
1947 * features are turned off but some BIOSes turn them on.
1948 */
1949
1950 uint8_t b;
1951 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1952 if (b & 0x40) {
1953 /* Turn off PCI Bus Parking */
1954 pci_write_config_byte(dev, 0x76, b ^ 0x40);
1955
bc043274
TY		 1956 dev_info(&dev->dev,
1957 "Disabling VIA CX700 PCI parking\n");
1958 }
1959 }
1960
1961 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
1962 if (b != 0) {
53a9bf42
TY		 1963 /* Turn off PCI Master read caching */
1964 pci_write_config_byte(dev, 0x72, 0x0);
bc043274
TY		 1965
1966 /* Set PCI Master Bus time-out to "1x16 PCLK" */
53a9bf42 1967 pci_write_config_byte(dev, 0x75, 0x1);
bc043274
TY		 1968
1969 /* Disable "Read FIFO Timer" */
53a9bf42
TY		 1970 pci_write_config_byte(dev, 0x77, 0x0);
1971
d6505a52 1972 dev_info(&dev->dev,
bc043274 1973 "Disabling VIA CX700 PCI caching\n");
53a9bf42
TY		 1974 }
1975 }
1976}
1977DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1978
99cb233d
BL		 1979/*
1980 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
1981 * VPD end tag will hang the device. This problem was initially
1982 * observed when a vpd entry was created in sysfs
1983 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
1984 * will dump 32k of data. Reading a full 32k will cause an access
1985 * beyond the VPD end tag causing the device to hang. Once the device
1986 * is hung, the bnx2 driver will not be able to reset the device.
1987 * We believe that it is legal to read beyond the end tag and
1988 * therefore the solution is to limit the read/write length.
1989 */
1990static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
1991{
9d82d8ea 1992 /*
35405f25
DH		 1993 * Only disable the VPD capability for 5706, 5706S, 5708,
1994 * 5708S and 5709 rev. A
9d82d8ea 1995 */
99cb233d 1996 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
35405f25 1997 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
99cb233d 1998 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
9d82d8ea 1999 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
99cb233d
BL		 2000 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2001 (dev->revision & 0xf0) == 0x0)) {
2002 if (dev->vpd)
2003 dev->vpd->len = 0x80;
2004 }
2005}
2006
bffadffd
YZ		 2007DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2008 PCI_DEVICE_ID_NX2_5706,
2009 quirk_brcm_570x_limit_vpd);
2010DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2011 PCI_DEVICE_ID_NX2_5706S,
2012 quirk_brcm_570x_limit_vpd);
2013DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2014 PCI_DEVICE_ID_NX2_5708,
2015 quirk_brcm_570x_limit_vpd);
2016DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2017 PCI_DEVICE_ID_NX2_5708S,
2018 quirk_brcm_570x_limit_vpd);
2019DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2020 PCI_DEVICE_ID_NX2_5709,
2021 quirk_brcm_570x_limit_vpd);
2022DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2023 PCI_DEVICE_ID_NX2_5709S,
2024 quirk_brcm_570x_limit_vpd);
99cb233d 2025
26c56dc0
MM		 2026/* Originally in EDAC sources for i82875P:
2027 * Intel tells BIOS developers to hide device 6 which
2028 * configures the overflow device access containing
2029 * the DRBs - this is where we expose device 6.
2030 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2031 */
2032static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev)
2033{
2034 u8 reg;
2035
2036 if (pci_read_config_byte(dev, 0xF4, &reg) == 0 && !(reg & 0x02)) {
2037 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2038 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2039 }
2040}
2041
2042DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2043 quirk_unhide_mch_dev6);
2044DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2045 quirk_unhide_mch_dev6);
2046
2047
3f79e107 2048#ifdef CONFIG_PCI_MSI
ebdf7d39
TH		 2049/* Some chipsets do not support MSI. We cannot easily rely on setting
2050 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2051 * some other busses controlled by the chipset even if Linux is not
2052 * aware of it. Instead of setting the flag on all busses in the
2053 * machine, simply disable MSI globally.
3f79e107 2054 */
ebdf7d39 2055static void __init quirk_disable_all_msi(struct pci_dev *dev)
3f79e107 2056{
88187dfa 2057 pci_no_msi();
f0fda801 2058 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
3f79e107 2059}
ebdf7d39
TH		 2060DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2061DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2062DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
66d715c9 2063DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
184b812f 2064DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
162dedd3 2065DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
3f79e107
BG		 2066
2067/* Disable MSI on chipsets that are known to not support it */
2068static void __devinit quirk_disable_msi(struct pci_dev *dev)
2069{
2070 if (dev->subordinate) {
f0fda801 2071 dev_warn(&dev->dev, "MSI quirk detected; "
2072 "subordinate MSI disabled\n");
3f79e107
BG		 2073 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2074 }
2075}
2076DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
6397c75c
BG		 2077
2078/* Go through the list of Hypertransport capabilities and
2079 * return 1 if a HT MSI capability is found and enabled */
2080static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
2081{
7a380507
ME		 2082 int pos, ttl = 48;
2083
2084 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2085 while (pos && ttl--) {
2086 u8 flags;
2087
2088 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2089 &flags) == 0)
2090 {
f0fda801 2091 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
7a380507 2092 flags & HT_MSI_FLAGS_ENABLE ?
f0fda801 2093 "enabled" : "disabled");
7a380507 2094 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
6397c75c 2095 }
7a380507
ME		 2096
2097 pos = pci_find_next_ht_capability(dev, pos,
2098 HT_CAPTYPE_MSI_MAPPING);
6397c75c
BG		 2099 }
2100 return 0;
2101}
2102
2103/* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2104static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
2105{
2106 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
f0fda801 2107 dev_warn(&dev->dev, "MSI quirk detected; "
2108 "subordinate MSI disabled\n");
6397c75c
BG		 2109 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2110 }
2111}
2112DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2113 quirk_msi_ht_cap);
6bae1d96 2114
6397c75c
BG		 2115/* The nVidia CK804 chipset may have 2 HT MSI mappings.
2116 * MSI are supported if the MSI capability set in any of these mappings.
2117 */
2118static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2119{
2120 struct pci_dev *pdev;
2121
2122 if (!dev->subordinate)
2123 return;
2124
2125 /* check HT MSI cap on this chipset and the root one.
2126 * a single one having MSI is enough to be sure that MSI are supported.
2127 */
11f242f0 2128 pdev = pci_get_slot(dev->bus, 0);
9ac0ce85
JJ		 2129 if (!pdev)
2130 return;
0c875c28 2131 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
f0fda801 2132 dev_warn(&dev->dev, "MSI quirk detected; "
2133 "subordinate MSI disabled\n");
6397c75c
BG		 2134 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2135 }
11f242f0 2136 pci_dev_put(pdev);
6397c75c
BG		 2137}
2138DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2139 quirk_nvidia_ck804_msi_ht_cap);
ba698ad4 2140
415b6d0e
BH		 2141/* Force enable MSI mapping capability on HT bridges */
2142static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
9dc625e7
PC		 2143{
2144 int pos, ttl = 48;
2145
2146 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2147 while (pos && ttl--) {
2148 u8 flags;
2149
2150 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2151 &flags) == 0) {
2152 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2153
2154 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2155 flags | HT_MSI_FLAGS_ENABLE);
2156 }
2157 pos = pci_find_next_ht_capability(dev, pos,
2158 HT_CAPTYPE_MSI_MAPPING);
2159 }
2160}
415b6d0e
BH		 2161DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2162 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2163 ht_enable_msi_mapping);
9dc625e7 2164
e0ae4f55
YL		 2165DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2166 ht_enable_msi_mapping);
2167
75e07fc3
AP		 2168/* The P5N32-SLI Premium motherboard from Asus has a problem with msi
2169 * for the MCP55 NIC. It is not yet determined whether the msi problem
2170 * also affects other devices. As for now, turn off msi for this device.
2171 */
2172static void __devinit nvenet_msi_disable(struct pci_dev *dev)
2173{
2174 if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) {
2175 dev_info(&dev->dev,
2176 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n");
2177 dev->no_msi = 1;
2178 }
2179}
2180DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2181 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2182 nvenet_msi_disable);
2183
de745306
YL		 2184static int __devinit ht_check_msi_mapping(struct pci_dev *dev)
2185{
2186 int pos, ttl = 48;
2187 int found = 0;
2188
2189 /* check if there is HT MSI cap or enabled on this device */
2190 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2191 while (pos && ttl--) {
2192 u8 flags;
2193
2194 if (found < 1)
2195 found = 1;
2196 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2197 &flags) == 0) {
2198 if (flags & HT_MSI_FLAGS_ENABLE) {
2199 if (found < 2) {
2200 found = 2;
2201 break;
2202 }
2203 }
2204 }
2205 pos = pci_find_next_ht_capability(dev, pos,
2206 HT_CAPTYPE_MSI_MAPPING);
2207 }
2208
2209 return found;
2210}
2211
2212static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge)
2213{
2214 struct pci_dev *dev;
2215 int pos;
2216 int i, dev_no;
2217 int found = 0;
2218
2219 dev_no = host_bridge->devfn >> 3;
2220 for (i = dev_no + 1; i < 0x20; i++) {
2221 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2222 if (!dev)
2223 continue;
2224
2225 /* found next host bridge ?*/
2226 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2227 if (pos != 0) {
2228 pci_dev_put(dev);
2229 break;
2230 }
2231
2232 if (ht_check_msi_mapping(dev)) {
2233 found = 1;
2234 pci_dev_put(dev);
2235 break;
2236 }
2237 pci_dev_put(dev);
2238 }
2239
2240 return found;
2241}
2242
eeafda70
YL		 2243#define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2244#define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2245
2246static int __devinit is_end_of_ht_chain(struct pci_dev *dev)
2247{
2248 int pos, ctrl_off;
2249 int end = 0;
2250 u16 flags, ctrl;
2251
2252 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2253
2254 if (!pos)
2255 goto out;
2256
2257 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2258
2259 ctrl_off = ((flags >> 10) & 1) ?
2260 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2261 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2262
2263 if (ctrl & (1 << 6))
2264 end = 1;
2265
2266out:
2267 return end;
2268}
2269
1dec6b05 2270static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev)
9dc625e7
PC		 2271{
2272 struct pci_dev *host_bridge;
1dec6b05
YL		 2273 int pos;
2274 int i, dev_no;
2275 int found = 0;
2276
2277 dev_no = dev->devfn >> 3;
2278 for (i = dev_no; i >= 0; i--) {
2279 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2280 if (!host_bridge)
2281 continue;
2282
2283 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2284 if (pos != 0) {
2285 found = 1;
2286 break;
2287 }
2288 pci_dev_put(host_bridge);
2289 }
2290
2291 if (!found)
2292 return;
2293
eeafda70
YL		 2294 /* don't enable end_device/host_bridge with leaf directly here */
2295 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2296 host_bridge_with_leaf(host_bridge))
de745306
YL		 2297 goto out;
2298
1dec6b05
YL		 2299 /* root did that ! */
2300 if (msi_ht_cap_enabled(host_bridge))
2301 goto out;
2302
2303 ht_enable_msi_mapping(dev);
2304
2305out:
2306 pci_dev_put(host_bridge);
2307}
2308
2309static void __devinit ht_disable_msi_mapping(struct pci_dev *dev)
2310{
2311 int pos, ttl = 48;
2312
2313 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2314 while (pos && ttl--) {
2315 u8 flags;
2316
2317 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2318 &flags) == 0) {
6a958d5b 2319 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
1dec6b05
YL		 2320
2321 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2322 flags & ~HT_MSI_FLAGS_ENABLE);
2323 }
2324 pos = pci_find_next_ht_capability(dev, pos,
2325 HT_CAPTYPE_MSI_MAPPING);
2326 }
2327}
2328
de745306 2329static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
1dec6b05
YL		 2330{
2331 struct pci_dev *host_bridge;
2332 int pos;
2333 int found;
2334
2335 /* check if there is HT MSI cap or enabled on this device */
2336 found = ht_check_msi_mapping(dev);
2337
2338 /* no HT MSI CAP */
2339 if (found == 0)
2340 return;
9dc625e7
PC		 2341
2342 /*
2343 * HT MSI mapping should be disabled on devices that are below
2344 * a non-Hypertransport host bridge. Locate the host bridge...
2345 */
2346 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2347 if (host_bridge == NULL) {
2348 dev_warn(&dev->dev,
2349 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2350 return;
2351 }
2352
2353 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2354 if (pos != 0) {
2355 /* Host bridge is to HT */
1dec6b05
YL		 2356 if (found == 1) {
2357 /* it is not enabled, try to enable it */
de745306
YL		 2358 if (all)
2359 ht_enable_msi_mapping(dev);
2360 else
2361 nv_ht_enable_msi_mapping(dev);
1dec6b05 2362 }
9dc625e7
PC		 2363 return;
2364 }
2365
1dec6b05
YL		 2366 /* HT MSI is not enabled */
2367 if (found == 1)
2368 return;
9dc625e7 2369
1dec6b05
YL		 2370 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2371 ht_disable_msi_mapping(dev);
9dc625e7 2372}
de745306
YL		 2373
2374static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2375{
2376 return __nv_msi_ht_cap_quirk(dev, 1);
2377}
2378
2379static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2380{
2381 return __nv_msi_ht_cap_quirk(dev, 0);
2382}
2383
2384DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2385
2386DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
9dc625e7 2387
ba698ad4
DM		 2388static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
2389{
2390 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2391}
4600c9d7
SH		 2392static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2393{
2394 struct pci_dev *p;
2395
2396 /* SB700 MSI issue will be fixed at HW level from revision A21,
2397 * we need check PCI REVISION ID of SMBus controller to get SB700
2398 * revision.
2399 */
2400 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2401 NULL);
2402 if (!p)
2403 return;
2404
2405 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2406 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2407 pci_dev_put(p);
2408}
ba698ad4
DM		 2409DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2410 PCI_DEVICE_ID_TIGON3_5780,
2411 quirk_msi_intx_disable_bug);
2412DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2413 PCI_DEVICE_ID_TIGON3_5780S,
2414 quirk_msi_intx_disable_bug);
2415DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2416 PCI_DEVICE_ID_TIGON3_5714,
2417 quirk_msi_intx_disable_bug);
2418DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2419 PCI_DEVICE_ID_TIGON3_5714S,
2420 quirk_msi_intx_disable_bug);
2421DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2422 PCI_DEVICE_ID_TIGON3_5715,
2423 quirk_msi_intx_disable_bug);
2424DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2425 PCI_DEVICE_ID_TIGON3_5715S,
2426 quirk_msi_intx_disable_bug);
2427
bc38b411 2428DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
4600c9d7 2429 quirk_msi_intx_disable_ati_bug);
bc38b411 2430DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
4600c9d7 2431 quirk_msi_intx_disable_ati_bug);
bc38b411 2432DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
4600c9d7 2433 quirk_msi_intx_disable_ati_bug);
bc38b411 2434DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
4600c9d7 2435 quirk_msi_intx_disable_ati_bug);
bc38b411 2436DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
4600c9d7 2437 quirk_msi_intx_disable_ati_bug);
bc38b411
DM		 2438
2439DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2440 quirk_msi_intx_disable_bug);
2441DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2442 quirk_msi_intx_disable_bug);
2443DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2444 quirk_msi_intx_disable_bug);
2445
3f79e107 2446#endif /* CONFIG_PCI_MSI */
3d137310 2447
7eb93b17
YZ		 2448#ifdef CONFIG_PCI_IOV
2449
2450/*
2451 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the
2452 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the
2453 * old Flash Memory Space.
2454 */
2455static void __devinit quirk_i82576_sriov(struct pci_dev *dev)
2456{
2457 int pos, flags;
2458 u32 bar, start, size;
2459
2460 if (PAGE_SIZE > 0x10000)
2461 return;
2462
2463 flags = pci_resource_flags(dev, 0);
2464 if ((flags & PCI_BASE_ADDRESS_SPACE) !=
2465 PCI_BASE_ADDRESS_SPACE_MEMORY ||
2466 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) !=
2467 PCI_BASE_ADDRESS_MEM_TYPE_32)
2468 return;
2469
2470 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
2471 if (!pos)
2472 return;
2473
2474 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar);
2475 if (bar & PCI_BASE_ADDRESS_MEM_MASK)
2476 return;
2477
2478 start = pci_resource_start(dev, 1);
2479 size = pci_resource_len(dev, 1);
2480 if (!start || size != 0x400000 || start & (size - 1))
2481 return;
2482
2483 pci_resource_flags(dev, 1) = 0;
2484 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
2485 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start);
2486 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2);
2487
2488 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n");
2489}
2490DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov);
2491DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov);
2492DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov);
dcb4ea2e
AD		 2493DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov);
2494DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov);
7eb93b17
YZ		 2495
2496#endif /* CONFIG_PCI_IOV */
2497
bfb0f330
JB		 2498static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2499 struct pci_fixup *end)
3d137310
TP		 2500{
2501 while (f < end) {
2502 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
bfb0f330 2503 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
c9bbb4ab 2504 dev_dbg(&dev->dev, "calling %pF\n", f->hook);
3d137310
TP		 2505 f->hook(dev);
2506 }
2507 f++;
2508 }
2509}
2510
2511extern struct pci_fixup __start_pci_fixups_early[];
2512extern struct pci_fixup __end_pci_fixups_early[];
2513extern struct pci_fixup __start_pci_fixups_header[];
2514extern struct pci_fixup __end_pci_fixups_header[];
2515extern struct pci_fixup __start_pci_fixups_final[];
2516extern struct pci_fixup __end_pci_fixups_final[];
2517extern struct pci_fixup __start_pci_fixups_enable[];
2518extern struct pci_fixup __end_pci_fixups_enable[];
2519extern struct pci_fixup __start_pci_fixups_resume[];
2520extern struct pci_fixup __end_pci_fixups_resume[];
2521extern struct pci_fixup __start_pci_fixups_resume_early[];
2522extern struct pci_fixup __end_pci_fixups_resume_early[];
2523extern struct pci_fixup __start_pci_fixups_suspend[];
2524extern struct pci_fixup __end_pci_fixups_suspend[];
2525
2526
2527void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
2528{
2529 struct pci_fixup *start, *end;
2530
2531 switch(pass) {
2532 case pci_fixup_early:
2533 start = __start_pci_fixups_early;
2534 end = __end_pci_fixups_early;
2535 break;
2536
2537 case pci_fixup_header:
2538 start = __start_pci_fixups_header;
2539 end = __end_pci_fixups_header;
2540 break;
2541
2542 case pci_fixup_final:
2543 start = __start_pci_fixups_final;
2544 end = __end_pci_fixups_final;
2545 break;
2546
2547 case pci_fixup_enable:
2548 start = __start_pci_fixups_enable;
2549 end = __end_pci_fixups_enable;
2550 break;
2551
2552 case pci_fixup_resume:
2553 start = __start_pci_fixups_resume;
2554 end = __end_pci_fixups_resume;
2555 break;
2556
2557 case pci_fixup_resume_early:
2558 start = __start_pci_fixups_resume_early;
2559 end = __end_pci_fixups_resume_early;
2560 break;
2561
2562 case pci_fixup_suspend:
2563 start = __start_pci_fixups_suspend;
2564 end = __end_pci_fixups_suspend;
2565 break;
2566
2567 default:
2568 /* stupid compiler warning, you would think with an enum... */
2569 return;
2570 }
2571 pci_do_fixups(dev, start, end);
2572}
2573#else
2574void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
2575#endif
2576EXPORT_SYMBOL(pci_fixup_device);
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