?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
pkt_sched: pedit use proper struct
[linux-2.6/mini2440.git] / drivers / pci / quirks.c
blob6099facecd79191d6b1f06d060dc33fca42bec66
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 *
10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
12 *
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
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>
23 #include <linux/acpi.h>
24 #include <linux/kallsyms.h>
25 #include <linux/dmi.h>
26 #include <linux/pci-aspm.h>
27 #include <linux/ioport.h>
28 #include "pci.h"
29
30 int isa_dma_bridge_buggy;
31 EXPORT_SYMBOL(isa_dma_bridge_buggy);
32 int pci_pci_problems;
33 EXPORT_SYMBOL(pci_pci_problems);
34
35 #ifdef CONFIG_PCI_QUIRKS
36 /*
37 * This quirk function disables memory decoding and releases memory resources
38 * of the device specified by kernel's boot parameter 'pci=resource_alignment='.
39 * It also rounds up size to specified alignment.
40 * Later on, the kernel will assign page-aligned memory resource back
41 * to the device.
42 */
43 static void __devinit quirk_resource_alignment(struct pci_dev *dev)
44 {
45 int i;
46 struct resource *r;
47 resource_size_t align, size;
48 u16 command;
49
50 if (!pci_is_reassigndev(dev))
51 return;
52
53 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL &&
54 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
55 dev_warn(&dev->dev,
56 "Can't reassign resources to host bridge.\n");
57 return;
58 }
59
60 dev_info(&dev->dev,
61 "Disabling memory decoding and releasing memory resources.\n");
62 pci_read_config_word(dev, PCI_COMMAND, &command);
63 command &= ~PCI_COMMAND_MEMORY;
64 pci_write_config_word(dev, PCI_COMMAND, command);
65
66 align = pci_specified_resource_alignment(dev);
67 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) {
68 r = &dev->resource[i];
69 if (!(r->flags & IORESOURCE_MEM))
70 continue;
71 size = resource_size(r);
72 if (size < align) {
73 size = align;
74 dev_info(&dev->dev,
75 "Rounding up size of resource #%d to %#llx.\n",
76 i, (unsigned long long)size);
77 }
78 r->end = size - 1;
79 r->start = 0;
80 }
81 /* Need to disable bridge's resource window,
82 * to enable the kernel to reassign new resource
83 * window later on.
84 */
85 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
86 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
87 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
88 r = &dev->resource[i];
89 if (!(r->flags & IORESOURCE_MEM))
90 continue;
91 r->end = resource_size(r) - 1;
92 r->start = 0;
93 }
94 pci_disable_bridge_window(dev);
95 }
96 }
97 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment);
98
99 /* The Mellanox Tavor device gives false positive parity errors
100 * Mark this device with a broken_parity_status, to allow
101 * PCI scanning code to "skip" this now blacklisted device.
102 */
103 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
104 {
105 dev->broken_parity_status = 1; /* This device gives false positives */
106 }
107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
109
110 /* Deal with broken BIOS'es that neglect to enable passive release,
111 which can cause problems in combination with the 82441FX/PPro MTRRs */
112 static void quirk_passive_release(struct pci_dev *dev)
113 {
114 struct pci_dev *d = NULL;
115 unsigned char dlc;
116
117 /* We have to make sure a particular bit is set in the PIIX3
118 ISA bridge, so we have to go out and find it. */
119 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
120 pci_read_config_byte(d, 0x82, &dlc);
121 if (!(dlc & 1<<1)) {
122 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
123 dlc |= 1<<1;
124 pci_write_config_byte(d, 0x82, dlc);
125 }
126 }
127 }
128 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
129 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
130
131 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
132 but VIA don't answer queries. If you happen to have good contacts at VIA
133 ask them for me please -- Alan
134
135 This appears to be BIOS not version dependent. So presumably there is a
136 chipset level fix */
137
138 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
139 {
140 if (!isa_dma_bridge_buggy) {
141 isa_dma_bridge_buggy=1;
142 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
143 }
144 }
145 /*
146 * Its not totally clear which chipsets are the problematic ones
147 * We know 82C586 and 82C596 variants are affected.
148 */
149 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
150 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
151 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
153 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
154 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
155 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
156
157 /*
158 * Chipsets where PCI->PCI transfers vanish or hang
159 */
160 static void __devinit quirk_nopcipci(struct pci_dev *dev)
161 {
162 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
163 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
164 pci_pci_problems |= PCIPCI_FAIL;
165 }
166 }
167 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
168 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
169
170 static void __devinit quirk_nopciamd(struct pci_dev *dev)
171 {
172 u8 rev;
173 pci_read_config_byte(dev, 0x08, &rev);
174 if (rev == 0x13) {
175 /* Erratum 24 */
176 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
177 pci_pci_problems |= PCIAGP_FAIL;
178 }
179 }
180 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
181
182 /*
183 * Triton requires workarounds to be used by the drivers
184 */
185 static void __devinit quirk_triton(struct pci_dev *dev)
186 {
187 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
188 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
189 pci_pci_problems |= PCIPCI_TRITON;
190 }
191 }
192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
193 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
196
197 /*
198 * VIA Apollo KT133 needs PCI latency patch
199 * Made according to a windows driver based patch by George E. Breese
200 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
201 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
202 * the info on which Mr Breese based his work.
203 *
204 * Updated based on further information from the site and also on
205 * information provided by VIA
206 */
207 static void quirk_vialatency(struct pci_dev *dev)
208 {
209 struct pci_dev *p;
210 u8 busarb;
211 /* Ok we have a potential problem chipset here. Now see if we have
212 a buggy southbridge */
213
214 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
215 if (p!=NULL) {
216 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
217 /* Check for buggy part revisions */
218 if (p->revision < 0x40 || p->revision > 0x42)
219 goto exit;
220 } else {
221 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
222 if (p==NULL) /* No problem parts */
223 goto exit;
224 /* Check for buggy part revisions */
225 if (p->revision < 0x10 || p->revision > 0x12)
226 goto exit;
227 }
228
229 /*
230 * Ok we have the problem. Now set the PCI master grant to
231 * occur every master grant. The apparent bug is that under high
232 * PCI load (quite common in Linux of course) you can get data
233 * loss when the CPU is held off the bus for 3 bus master requests
234 * This happens to include the IDE controllers....
235 *
236 * VIA only apply this fix when an SB Live! is present but under
237 * both Linux and Windows this isnt enough, and we have seen
238 * corruption without SB Live! but with things like 3 UDMA IDE
239 * controllers. So we ignore that bit of the VIA recommendation..
240 */
241
242 pci_read_config_byte(dev, 0x76, &busarb);
243 /* Set bit 4 and bi 5 of byte 76 to 0x01
244 "Master priority rotation on every PCI master grant */
245 busarb &= ~(1<<5);
246 busarb |= (1<<4);
247 pci_write_config_byte(dev, 0x76, busarb);
248 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
249 exit:
250 pci_dev_put(p);
251 }
252 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
255 /* Must restore this on a resume from RAM */
256 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
257 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
258 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
259
260 /*
261 * VIA Apollo VP3 needs ETBF on BT848/878
262 */
263 static void __devinit quirk_viaetbf(struct pci_dev *dev)
264 {
265 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
266 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
267 pci_pci_problems |= PCIPCI_VIAETBF;
268 }
269 }
270 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
271
272 static void __devinit quirk_vsfx(struct pci_dev *dev)
273 {
274 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
275 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
276 pci_pci_problems |= PCIPCI_VSFX;
277 }
278 }
279 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
280
281 /*
282 * Ali Magik requires workarounds to be used by the drivers
283 * that DMA to AGP space. Latency must be set to 0xA and triton
284 * workaround applied too
285 * [Info kindly provided by ALi]
286 */
287 static void __init quirk_alimagik(struct pci_dev *dev)
288 {
289 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
290 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
291 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
292 }
293 }
294 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
295 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
296
297 /*
298 * Natoma has some interesting boundary conditions with Zoran stuff
299 * at least
300 */
301 static void __devinit quirk_natoma(struct pci_dev *dev)
302 {
303 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
304 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
305 pci_pci_problems |= PCIPCI_NATOMA;
306 }
307 }
308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
309 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
311 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
312 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
314
315 /*
316 * This chip can cause PCI parity errors if config register 0xA0 is read
317 * while DMAs are occurring.
318 */
319 static void __devinit quirk_citrine(struct pci_dev *dev)
320 {
321 dev->cfg_size = 0xA0;
322 }
323 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
324
325 /*
326 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
327 * If it's needed, re-allocate the region.
328 */
329 static void __devinit quirk_s3_64M(struct pci_dev *dev)
330 {
331 struct resource *r = &dev->resource[0];
332
333 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
334 r->start = 0;
335 r->end = 0x3ffffff;
336 }
337 }
338 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
339 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
340
341 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
342 unsigned size, int nr, const char *name)
343 {
344 region &= ~(size-1);
345 if (region) {
346 struct pci_bus_region bus_region;
347 struct resource *res = dev->resource + nr;
348
349 res->name = pci_name(dev);
350 res->start = region;
351 res->end = region + size - 1;
352 res->flags = IORESOURCE_IO;
353
354 /* Convert from PCI bus to resource space. */
355 bus_region.start = res->start;
356 bus_region.end = res->end;
357 pcibios_bus_to_resource(dev, res, &bus_region);
358
359 pci_claim_resource(dev, nr);
360 dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
361 }
362 }
363
364 /*
365 * ATI Northbridge setups MCE the processor if you even
366 * read somewhere between 0x3b0->0x3bb or read 0x3d3
367 */
368 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
369 {
370 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
371 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
372 request_region(0x3b0, 0x0C, "RadeonIGP");
373 request_region(0x3d3, 0x01, "RadeonIGP");
374 }
375 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
376
377 /*
378 * Let's make the southbridge information explicit instead
379 * of having to worry about people probing the ACPI areas,
380 * for example.. (Yes, it happens, and if you read the wrong
381 * ACPI register it will put the machine to sleep with no
382 * way of waking it up again. Bummer).
383 *
384 * ALI M7101: Two IO regions pointed to by words at
385 * 0xE0 (64 bytes of ACPI registers)
386 * 0xE2 (32 bytes of SMB registers)
387 */
388 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
389 {
390 u16 region;
391
392 pci_read_config_word(dev, 0xE0, &region);
393 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
394 pci_read_config_word(dev, 0xE2, &region);
395 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
396 }
397 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
398
399 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
400 {
401 u32 devres;
402 u32 mask, size, base;
403
404 pci_read_config_dword(dev, port, &devres);
405 if ((devres & enable) != enable)
406 return;
407 mask = (devres >> 16) & 15;
408 base = devres & 0xffff;
409 size = 16;
410 for (;;) {
411 unsigned bit = size >> 1;
412 if ((bit & mask) == bit)
413 break;
414 size = bit;
415 }
416 /*
417 * For now we only print it out. Eventually we'll want to
418 * reserve it (at least if it's in the 0x1000+ range), but
419 * let's get enough confirmation reports first.
420 */
421 base &= -size;
422 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
423 }
424
425 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
426 {
427 u32 devres;
428 u32 mask, size, base;
429
430 pci_read_config_dword(dev, port, &devres);
431 if ((devres & enable) != enable)
432 return;
433 base = devres & 0xffff0000;
434 mask = (devres & 0x3f) << 16;
435 size = 128 << 16;
436 for (;;) {
437 unsigned bit = size >> 1;
438 if ((bit & mask) == bit)
439 break;
440 size = bit;
441 }
442 /*
443 * For now we only print it out. Eventually we'll want to
444 * reserve it, but let's get enough confirmation reports first.
445 */
446 base &= -size;
447 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
448 }
449
450 /*
451 * PIIX4 ACPI: Two IO regions pointed to by longwords at
452 * 0x40 (64 bytes of ACPI registers)
453 * 0x90 (16 bytes of SMB registers)
454 * and a few strange programmable PIIX4 device resources.
455 */
456 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
457 {
458 u32 region, res_a;
459
460 pci_read_config_dword(dev, 0x40, &region);
461 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
462 pci_read_config_dword(dev, 0x90, &region);
463 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
464
465 /* Device resource A has enables for some of the other ones */
466 pci_read_config_dword(dev, 0x5c, &res_a);
467
468 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
469 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
470
471 /* Device resource D is just bitfields for static resources */
472
473 /* Device 12 enabled? */
474 if (res_a & (1 << 29)) {
475 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
476 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
477 }
478 /* Device 13 enabled? */
479 if (res_a & (1 << 30)) {
480 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
481 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
482 }
483 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
484 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
485 }
486 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
487 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
488
489 /*
490 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
491 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
492 * 0x58 (64 bytes of GPIO I/O space)
493 */
494 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
495 {
496 u32 region;
497
498 pci_read_config_dword(dev, 0x40, &region);
499 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
500
501 pci_read_config_dword(dev, 0x58, &region);
502 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
503 }
504 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
505 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
506 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
507 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
514
515 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
516 {
517 u32 region;
518
519 pci_read_config_dword(dev, 0x40, &region);
520 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
521
522 pci_read_config_dword(dev, 0x48, &region);
523 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
524 }
525
526 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
527 {
528 u32 val;
529 u32 size, base;
530
531 pci_read_config_dword(dev, reg, &val);
532
533 /* Enabled? */
534 if (!(val & 1))
535 return;
536 base = val & 0xfffc;
537 if (dynsize) {
538 /*
539 * This is not correct. It is 16, 32 or 64 bytes depending on
540 * register D31:F0:ADh bits 5:4.
541 *
542 * But this gets us at least _part_ of it.
543 */
544 size = 16;
545 } else {
546 size = 128;
547 }
548 base &= ~(size-1);
549
550 /* Just print it out for now. We should reserve it after more debugging */
551 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
552 }
553
554 static void __devinit quirk_ich6_lpc(struct pci_dev *dev)
555 {
556 /* Shared ACPI/GPIO decode with all ICH6+ */
557 ich6_lpc_acpi_gpio(dev);
558
559 /* ICH6-specific generic IO decode */
560 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
561 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
562 }
563 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
564 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
565
566 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
567 {
568 u32 val;
569 u32 mask, base;
570
571 pci_read_config_dword(dev, reg, &val);
572
573 /* Enabled? */
574 if (!(val & 1))
575 return;
576
577 /*
578 * IO base in bits 15:2, mask in bits 23:18, both
579 * are dword-based
580 */
581 base = val & 0xfffc;
582 mask = (val >> 16) & 0xfc;
583 mask |= 3;
584
585 /* Just print it out for now. We should reserve it after more debugging */
586 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
587 }
588
589 /* ICH7-10 has the same common LPC generic IO decode registers */
590 static void __devinit quirk_ich7_lpc(struct pci_dev *dev)
591 {
592 /* We share the common ACPI/DPIO decode with ICH6 */
593 ich6_lpc_acpi_gpio(dev);
594
595 /* And have 4 ICH7+ generic decodes */
596 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
597 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
598 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
599 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
600 }
601 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
602 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
614
615 /*
616 * VIA ACPI: One IO region pointed to by longword at
617 * 0x48 or 0x20 (256 bytes of ACPI registers)
618 */
619 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
620 {
621 u32 region;
622
623 if (dev->revision & 0x10) {
624 pci_read_config_dword(dev, 0x48, &region);
625 region &= PCI_BASE_ADDRESS_IO_MASK;
626 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
627 }
628 }
629 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
630
631 /*
632 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
633 * 0x48 (256 bytes of ACPI registers)
634 * 0x70 (128 bytes of hardware monitoring register)
635 * 0x90 (16 bytes of SMB registers)
636 */
637 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
638 {
639 u16 hm;
640 u32 smb;
641
642 quirk_vt82c586_acpi(dev);
643
644 pci_read_config_word(dev, 0x70, &hm);
645 hm &= PCI_BASE_ADDRESS_IO_MASK;
646 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
647
648 pci_read_config_dword(dev, 0x90, &smb);
649 smb &= PCI_BASE_ADDRESS_IO_MASK;
650 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
651 }
652 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
653
654 /*
655 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
656 * 0x88 (128 bytes of power management registers)
657 * 0xd0 (16 bytes of SMB registers)
658 */
659 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
660 {
661 u16 pm, smb;
662
663 pci_read_config_word(dev, 0x88, &pm);
664 pm &= PCI_BASE_ADDRESS_IO_MASK;
665 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
666
667 pci_read_config_word(dev, 0xd0, &smb);
668 smb &= PCI_BASE_ADDRESS_IO_MASK;
669 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
670 }
671 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
672
673
674 #ifdef CONFIG_X86_IO_APIC
675
676 #include <asm/io_apic.h>
677
678 /*
679 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
680 * devices to the external APIC.
681 *
682 * TODO: When we have device-specific interrupt routers,
683 * this code will go away from quirks.
684 */
685 static void quirk_via_ioapic(struct pci_dev *dev)
686 {
687 u8 tmp;
688
689 if (nr_ioapics < 1)
690 tmp = 0; /* nothing routed to external APIC */
691 else
692 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
693
694 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
695 tmp == 0 ? "Disa" : "Ena");
696
697 /* Offset 0x58: External APIC IRQ output control */
698 pci_write_config_byte (dev, 0x58, tmp);
699 }
700 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
701 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
702
703 /*
704 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
705 * This leads to doubled level interrupt rates.
706 * Set this bit to get rid of cycle wastage.
707 * Otherwise uncritical.
708 */
709 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
710 {
711 u8 misc_control2;
712 #define BYPASS_APIC_DEASSERT 8
713
714 pci_read_config_byte(dev, 0x5B, &misc_control2);
715 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
716 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
717 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
718 }
719 }
720 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
721 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
722
723 /*
724 * The AMD io apic can hang the box when an apic irq is masked.
725 * We check all revs >= B0 (yet not in the pre production!) as the bug
726 * is currently marked NoFix
727 *
728 * We have multiple reports of hangs with this chipset that went away with
729 * noapic specified. For the moment we assume it's the erratum. We may be wrong
730 * of course. However the advice is demonstrably good even if so..
731 */
732 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
733 {
734 if (dev->revision >= 0x02) {
735 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
736 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
737 }
738 }
739 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
740
741 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
742 {
743 if (dev->devfn == 0 && dev->bus->number == 0)
744 sis_apic_bug = 1;
745 }
746 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
747 #endif /* CONFIG_X86_IO_APIC */
748
749 /*
750 * Some settings of MMRBC can lead to data corruption so block changes.
751 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
752 */
753 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
754 {
755 if (dev->subordinate && dev->revision <= 0x12) {
756 dev_info(&dev->dev, "AMD8131 rev %x detected; "
757 "disabling PCI-X MMRBC\n", dev->revision);
758 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
759 }
760 }
761 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
762
763 /*
764 * FIXME: it is questionable that quirk_via_acpi
765 * is needed. It shows up as an ISA bridge, and does not
766 * support the PCI_INTERRUPT_LINE register at all. Therefore
767 * it seems like setting the pci_dev's 'irq' to the
768 * value of the ACPI SCI interrupt is only done for convenience.
769 * -jgarzik
770 */
771 static void __devinit quirk_via_acpi(struct pci_dev *d)
772 {
773 /*
774 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
775 */
776 u8 irq;
777 pci_read_config_byte(d, 0x42, &irq);
778 irq &= 0xf;
779 if (irq && (irq != 2))
780 d->irq = irq;
781 }
782 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
783 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
784
785
786 /*
787 * VIA bridges which have VLink
788 */
789
790 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
791
792 static void quirk_via_bridge(struct pci_dev *dev)
793 {
794 /* See what bridge we have and find the device ranges */
795 switch (dev->device) {
796 case PCI_DEVICE_ID_VIA_82C686:
797 /* The VT82C686 is special, it attaches to PCI and can have
798 any device number. All its subdevices are functions of
799 that single device. */
800 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
801 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
802 break;
803 case PCI_DEVICE_ID_VIA_8237:
804 case PCI_DEVICE_ID_VIA_8237A:
805 via_vlink_dev_lo = 15;
806 break;
807 case PCI_DEVICE_ID_VIA_8235:
808 via_vlink_dev_lo = 16;
809 break;
810 case PCI_DEVICE_ID_VIA_8231:
811 case PCI_DEVICE_ID_VIA_8233_0:
812 case PCI_DEVICE_ID_VIA_8233A:
813 case PCI_DEVICE_ID_VIA_8233C_0:
814 via_vlink_dev_lo = 17;
815 break;
816 }
817 }
818 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
819 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
820 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
821 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
822 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
823 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
824 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
825 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
826
827 /**
828 * quirk_via_vlink - VIA VLink IRQ number update
829 * @dev: PCI device
830 *
831 * If the device we are dealing with is on a PIC IRQ we need to
832 * ensure that the IRQ line register which usually is not relevant
833 * for PCI cards, is actually written so that interrupts get sent
834 * to the right place.
835 * We only do this on systems where a VIA south bridge was detected,
836 * and only for VIA devices on the motherboard (see quirk_via_bridge
837 * above).
838 */
839
840 static void quirk_via_vlink(struct pci_dev *dev)
841 {
842 u8 irq, new_irq;
843
844 /* Check if we have VLink at all */
845 if (via_vlink_dev_lo == -1)
846 return;
847
848 new_irq = dev->irq;
849
850 /* Don't quirk interrupts outside the legacy IRQ range */
851 if (!new_irq || new_irq > 15)
852 return;
853
854 /* Internal device ? */
855 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
856 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
857 return;
858
859 /* This is an internal VLink device on a PIC interrupt. The BIOS
860 ought to have set this but may not have, so we redo it */
861
862 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
863 if (new_irq != irq) {
864 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
865 irq, new_irq);
866 udelay(15); /* unknown if delay really needed */
867 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
868 }
869 }
870 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
871
872 /*
873 * VIA VT82C598 has its device ID settable and many BIOSes
874 * set it to the ID of VT82C597 for backward compatibility.
875 * We need to switch it off to be able to recognize the real
876 * type of the chip.
877 */
878 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
879 {
880 pci_write_config_byte(dev, 0xfc, 0);
881 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
882 }
883 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
884
885 /*
886 * CardBus controllers have a legacy base address that enables them
887 * to respond as i82365 pcmcia controllers. We don't want them to
888 * do this even if the Linux CardBus driver is not loaded, because
889 * the Linux i82365 driver does not (and should not) handle CardBus.
890 */
891 static void quirk_cardbus_legacy(struct pci_dev *dev)
892 {
893 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
894 return;
895 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
896 }
897 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
898 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
899
900 /*
901 * Following the PCI ordering rules is optional on the AMD762. I'm not
902 * sure what the designers were smoking but let's not inhale...
903 *
904 * To be fair to AMD, it follows the spec by default, its BIOS people
905 * who turn it off!
906 */
907 static void quirk_amd_ordering(struct pci_dev *dev)
908 {
909 u32 pcic;
910 pci_read_config_dword(dev, 0x4C, &pcic);
911 if ((pcic&6)!=6) {
912 pcic |= 6;
913 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
914 pci_write_config_dword(dev, 0x4C, pcic);
915 pci_read_config_dword(dev, 0x84, &pcic);
916 pcic |= (1<<23); /* Required in this mode */
917 pci_write_config_dword(dev, 0x84, pcic);
918 }
919 }
920 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
921 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
922
923 /*
924 * DreamWorks provided workaround for Dunord I-3000 problem
925 *
926 * This card decodes and responds to addresses not apparently
927 * assigned to it. We force a larger allocation to ensure that
928 * nothing gets put too close to it.
929 */
930 static void __devinit quirk_dunord ( struct pci_dev * dev )
931 {
932 struct resource *r = &dev->resource [1];
933 r->start = 0;
934 r->end = 0xffffff;
935 }
936 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
937
938 /*
939 * i82380FB mobile docking controller: its PCI-to-PCI bridge
940 * is subtractive decoding (transparent), and does indicate this
941 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
942 * instead of 0x01.
943 */
944 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
945 {
946 dev->transparent = 1;
947 }
948 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
949 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
950
951 /*
952 * Common misconfiguration of the MediaGX/Geode PCI master that will
953 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
954 * datasheets found at http://www.national.com/ds/GX for info on what
955 * these bits do. <christer@weinigel.se>
956 */
957 static void quirk_mediagx_master(struct pci_dev *dev)
958 {
959 u8 reg;
960 pci_read_config_byte(dev, 0x41, &reg);
961 if (reg & 2) {
962 reg &= ~2;
963 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
964 pci_write_config_byte(dev, 0x41, reg);
965 }
966 }
967 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
968 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
969
970 /*
971 * Ensure C0 rev restreaming is off. This is normally done by
972 * the BIOS but in the odd case it is not the results are corruption
973 * hence the presence of a Linux check
974 */
975 static void quirk_disable_pxb(struct pci_dev *pdev)
976 {
977 u16 config;
978
979 if (pdev->revision != 0x04) /* Only C0 requires this */
980 return;
981 pci_read_config_word(pdev, 0x40, &config);
982 if (config & (1<<6)) {
983 config &= ~(1<<6);
984 pci_write_config_word(pdev, 0x40, config);
985 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
986 }
987 }
988 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
989 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
990
991 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
992 {
993 /* set SBX00 SATA in IDE mode to AHCI mode */
994 u8 tmp;
995
996 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
997 if (tmp == 0x01) {
998 pci_read_config_byte(pdev, 0x40, &tmp);
999 pci_write_config_byte(pdev, 0x40, tmp|1);
1000 pci_write_config_byte(pdev, 0x9, 1);
1001 pci_write_config_byte(pdev, 0xa, 6);
1002 pci_write_config_byte(pdev, 0x40, tmp);
1003
1004 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1005 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1006 }
1007 }
1008 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1009 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1010 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1011 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1012 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_SB900_SATA_IDE, quirk_amd_ide_mode);
1013 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_SB900_SATA_IDE, quirk_amd_ide_mode);
1014
1015 /*
1016 * Serverworks CSB5 IDE does not fully support native mode
1017 */
1018 static 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);
1026 /* PCI layer will sort out resources */
1027 }
1028 }
1029 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1030
1031 /*
1032 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
1033 */
1034 static 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))) {
1041 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
1042 prog &= ~5;
1043 pdev->class &= ~5;
1044 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1045 }
1046 }
1047 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1048
1049 /*
1050 * Some ATA devices break if put into D3
1051 */
1052
1053 static 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 }
1059 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3);
1060 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3);
1061 /* ALi loses some register settings that we cannot then restore */
1062 DECLARE_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 */
1065 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_no_ata_d3);
1066
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 */
1070 static void __init quirk_eisa_bridge(struct pci_dev *dev)
1071 {
1072 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1073 }
1074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1075
1076
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
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.
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.
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.
1101 */
1102 static int asus_hides_smbus;
1103
1104 static 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) {
1109 case 0x8025: /* P4B-LX */
1110 case 0x8070: /* P4B */
1111 case 0x8088: /* P4B533 */
1112 case 0x1626: /* L3C notebook */
1113 asus_hides_smbus = 1;
1114 }
1115 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
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 }
1122 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1123 switch(dev->subsystem_device) {
1124 case 0x8030: /* P4T533 */
1125 asus_hides_smbus = 1;
1126 }
1127 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1128 switch (dev->subsystem_device) {
1129 case 0x8070: /* P4G8X Deluxe */
1130 asus_hides_smbus = 1;
1131 }
1132 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1133 switch (dev->subsystem_device) {
1134 case 0x80c9: /* PU-DLS */
1135 asus_hides_smbus = 1;
1136 }
1137 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1138 switch (dev->subsystem_device) {
1139 case 0x1751: /* M2N notebook */
1140 case 0x1821: /* M5N notebook */
1141 case 0x1897: /* A6L notebook */
1142 asus_hides_smbus = 1;
1143 }
1144 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1145 switch (dev->subsystem_device) {
1146 case 0x184b: /* W1N notebook */
1147 case 0x186a: /* M6Ne notebook */
1148 asus_hides_smbus = 1;
1149 }
1150 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1151 switch (dev->subsystem_device) {
1152 case 0x80f2: /* P4P800-X */
1153 asus_hides_smbus = 1;
1154 }
1155 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1156 switch (dev->subsystem_device) {
1157 case 0x1882: /* M6V notebook */
1158 case 0x1977: /* A6VA notebook */
1159 asus_hides_smbus = 1;
1160 }
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 }
1168 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1169 switch (dev->subsystem_device) {
1170 case 0x12bc: /* HP D330L */
1171 case 0x12bd: /* HP D530 */
1172 case 0x006a: /* HP Compaq nx9500 */
1173 asus_hides_smbus = 1;
1174 }
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 }
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 }
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 }
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 }
1200 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1201 switch(dev->subsystem_device) {
1202 case 0x00b8: /* Compaq Evo D510 CMT */
1203 case 0x00b9: /* Compaq Evo D510 SFF */
1204 case 0x00ba: /* Compaq Evo D510 USDT */
1205 /* Motherboard doesn't have Host bridge
1206 * subvendor/subdevice IDs and on-board VGA
1207 * controller is disabled if an AGP card is
1208 * inserted, therefore checking USB UHCI
1209 * Controller #1 */
1210 asus_hides_smbus = 1;
1211 }
1212 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1213 switch (dev->subsystem_device) {
1214 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1215 /* Motherboard doesn't have host bridge
1216 * subvendor/subdevice IDs, therefore checking
1217 * its on-board VGA controller */
1218 asus_hides_smbus = 1;
1219 }
1220 }
1221 }
1222 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1223 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1224 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1225 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1226 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1227 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1228 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1229 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1230 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1231 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1232
1233 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1234 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1235 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1236
1237 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1238 {
1239 u16 val;
1240
1241 if (likely(!asus_hides_smbus))
1242 return;
1243
1244 pci_read_config_word(dev, 0xF2, &val);
1245 if (val & 0x8) {
1246 pci_write_config_word(dev, 0xF2, val & (~0x8));
1247 pci_read_config_word(dev, 0xF2, &val);
1248 if (val & 0x8)
1249 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1250 else
1251 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1252 }
1253 }
1254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1255 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1256 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1257 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1258 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1259 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1260 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1261 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1262 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1263 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1264 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1265 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1266 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1267 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1268
1269 /* It appears we just have one such device. If not, we have a warning */
1270 static void __iomem *asus_rcba_base;
1271 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1272 {
1273 u32 rcba;
1274
1275 if (likely(!asus_hides_smbus))
1276 return;
1277 WARN_ON(asus_rcba_base);
1278
1279 pci_read_config_dword(dev, 0xF0, &rcba);
1280 /* use bits 31:14, 16 kB aligned */
1281 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1282 if (asus_rcba_base == NULL)
1283 return;
1284 }
1285
1286 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1287 {
1288 u32 val;
1289
1290 if (likely(!asus_hides_smbus || !asus_rcba_base))
1291 return;
1292 /* read the Function Disable register, dword mode only */
1293 val = readl(asus_rcba_base + 0x3418);
1294 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1295 }
1296
1297 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1298 {
1299 if (likely(!asus_hides_smbus || !asus_rcba_base))
1300 return;
1301 iounmap(asus_rcba_base);
1302 asus_rcba_base = NULL;
1303 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1304 }
1305
1306 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1307 {
1308 asus_hides_smbus_lpc_ich6_suspend(dev);
1309 asus_hides_smbus_lpc_ich6_resume_early(dev);
1310 asus_hides_smbus_lpc_ich6_resume(dev);
1311 }
1312 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1313 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1314 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1315 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1316
1317 /*
1318 * SiS 96x south bridge: BIOS typically hides SMBus device...
1319 */
1320 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1321 {
1322 u8 val = 0;
1323 pci_read_config_byte(dev, 0x77, &val);
1324 if (val & 0x10) {
1325 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1326 pci_write_config_byte(dev, 0x77, val & ~0x10);
1327 }
1328 }
1329 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1330 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1333 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1334 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1335 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1336 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1337
1338 /*
1339 * ... This is further complicated by the fact that some SiS96x south
1340 * bridges pretend to be 85C503/5513 instead. In that case see if we
1341 * spotted a compatible north bridge to make sure.
1342 * (pci_find_device doesn't work yet)
1343 *
1344 * We can also enable the sis96x bit in the discovery register..
1345 */
1346 #define SIS_DETECT_REGISTER 0x40
1347
1348 static void quirk_sis_503(struct pci_dev *dev)
1349 {
1350 u8 reg;
1351 u16 devid;
1352
1353 pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1354 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1355 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1356 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1357 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1358 return;
1359 }
1360
1361 /*
1362 * Ok, it now shows up as a 96x.. run the 96x quirk by
1363 * hand in case it has already been processed.
1364 * (depends on link order, which is apparently not guaranteed)
1365 */
1366 dev->device = devid;
1367 quirk_sis_96x_smbus(dev);
1368 }
1369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1370 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1371
1372
1373 /*
1374 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1375 * and MC97 modem controller are disabled when a second PCI soundcard is
1376 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1377 * -- bjd
1378 */
1379 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1380 {
1381 u8 val;
1382 int asus_hides_ac97 = 0;
1383
1384 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1385 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1386 asus_hides_ac97 = 1;
1387 }
1388
1389 if (!asus_hides_ac97)
1390 return;
1391
1392 pci_read_config_byte(dev, 0x50, &val);
1393 if (val & 0xc0) {
1394 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1395 pci_read_config_byte(dev, 0x50, &val);
1396 if (val & 0xc0)
1397 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1398 else
1399 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1400 }
1401 }
1402 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1403 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1404
1405 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1406
1407 /*
1408 * If we are using libata we can drive this chip properly but must
1409 * do this early on to make the additional device appear during
1410 * the PCI scanning.
1411 */
1412 static void quirk_jmicron_ata(struct pci_dev *pdev)
1413 {
1414 u32 conf1, conf5, class;
1415 u8 hdr;
1416
1417 /* Only poke fn 0 */
1418 if (PCI_FUNC(pdev->devfn))
1419 return;
1420
1421 pci_read_config_dword(pdev, 0x40, &conf1);
1422 pci_read_config_dword(pdev, 0x80, &conf5);
1423
1424 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1425 conf5 &= ~(1 << 24); /* Clear bit 24 */
1426
1427 switch (pdev->device) {
1428 case PCI_DEVICE_ID_JMICRON_JMB360:
1429 /* The controller should be in single function ahci mode */
1430 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1431 break;
1432
1433 case PCI_DEVICE_ID_JMICRON_JMB365:
1434 case PCI_DEVICE_ID_JMICRON_JMB366:
1435 /* Redirect IDE second PATA port to the right spot */
1436 conf5 |= (1 << 24);
1437 /* Fall through */
1438 case PCI_DEVICE_ID_JMICRON_JMB361:
1439 case PCI_DEVICE_ID_JMICRON_JMB363:
1440 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1441 /* Set the class codes correctly and then direct IDE 0 */
1442 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1443 break;
1444
1445 case PCI_DEVICE_ID_JMICRON_JMB368:
1446 /* The controller should be in single function IDE mode */
1447 conf1 |= 0x00C00000; /* Set 22, 23 */
1448 break;
1449 }
1450
1451 pci_write_config_dword(pdev, 0x40, conf1);
1452 pci_write_config_dword(pdev, 0x80, conf5);
1453
1454 /* Update pdev accordingly */
1455 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1456 pdev->hdr_type = hdr & 0x7f;
1457 pdev->multifunction = !!(hdr & 0x80);
1458
1459 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1460 pdev->class = class >> 8;
1461 }
1462 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1463 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1464 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1465 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1466 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1467 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1468 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1469 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1470 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1471 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1472 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1473 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1474
1475 #endif
1476
1477 #ifdef CONFIG_X86_IO_APIC
1478 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1479 {
1480 int i;
1481
1482 if ((pdev->class >> 8) != 0xff00)
1483 return;
1484
1485 /* the first BAR is the location of the IO APIC...we must
1486 * not touch this (and it's already covered by the fixmap), so
1487 * forcibly insert it into the resource tree */
1488 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1489 insert_resource(&iomem_resource, &pdev->resource[0]);
1490
1491 /* The next five BARs all seem to be rubbish, so just clean
1492 * them out */
1493 for (i=1; i < 6; i++) {
1494 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1495 }
1496
1497 }
1498 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1499 #endif
1500
1501 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1502 {
1503 pci_msi_off(pdev);
1504 pdev->no_msi = 1;
1505 }
1506 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1507 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1508 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1509
1510
1511 /*
1512 * It's possible for the MSI to get corrupted if shpc and acpi
1513 * are used together on certain PXH-based systems.
1514 */
1515 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1516 {
1517 pci_msi_off(dev);
1518 dev->no_msi = 1;
1519 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1520 }
1521 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1522 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1523 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1524 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1525 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1526
1527 /*
1528 * Some Intel PCI Express chipsets have trouble with downstream
1529 * device power management.
1530 */
1531 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1532 {
1533 pci_pm_d3_delay = 120;
1534 dev->no_d1d2 = 1;
1535 }
1536
1537 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1538 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1540 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1544 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1546 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1549 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1550 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1551 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1552 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1553 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1554 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1555 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1556 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1557 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1558
1559 #ifdef CONFIG_X86_IO_APIC
1560 /*
1561 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1562 * remap the original interrupt in the linux kernel to the boot interrupt, so
1563 * that a PCI device's interrupt handler is installed on the boot interrupt
1564 * line instead.
1565 */
1566 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1567 {
1568 if (noioapicquirk || noioapicreroute)
1569 return;
1570
1571 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1572 dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n",
1573 dev->vendor, dev->device);
1574 }
1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1577 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1579 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1580 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1582 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1583 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1584 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1585 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1586 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1587 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1588 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1589 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1590 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1591
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
1604 static 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 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1616 dev->vendor, dev->device);
1617 }
1618 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1619 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
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
1629 static 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 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1649 dev->vendor, dev->device);
1650 }
1651 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1652 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
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)
1664 #define AMD_813X_REV_B2 0x13
1665
1666 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1667 {
1668 u32 pci_config_dword;
1669
1670 if (noioapicquirk)
1671 return;
1672 if (dev->revision == AMD_813X_REV_B2)
1673 return;
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 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1680 dev->vendor, dev->device);
1681 }
1682 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1683 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1684
1685 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1686
1687 static 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 dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] "
1697 "already disabled\n", dev->vendor, dev->device);
1698 return;
1699 }
1700 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1701 dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
1702 dev->vendor, dev->device);
1703 }
1704 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1705 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1706 #endif /* CONFIG_X86_IO_APIC */
1707
1708 /*
1709 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1710 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1711 * Re-allocate the region if needed...
1712 */
1713 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1714 {
1715 struct resource *r = &dev->resource[0];
1716
1717 if (r->start & 0x8) {
1718 r->start = 0;
1719 r->end = 0xf;
1720 }
1721 }
1722 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1723 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1724 quirk_tc86c001_ide);
1725
1726 static void __devinit quirk_netmos(struct pci_dev *dev)
1727 {
1728 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1729 unsigned int num_serial = dev->subsystem_device & 0xf;
1730
1731 /*
1732 * These Netmos parts are multiport serial devices with optional
1733 * parallel ports. Even when parallel ports are present, they
1734 * are identified as class SERIAL, which means the serial driver
1735 * will claim them. To prevent this, mark them as class OTHER.
1736 * These combo devices should be claimed by parport_serial.
1737 *
1738 * The subdevice ID is of the form 0x00PS, where <P> is the number
1739 * of parallel ports and <S> is the number of serial ports.
1740 */
1741 switch (dev->device) {
1742 case PCI_DEVICE_ID_NETMOS_9835:
1743 /* Well, this rule doesn't hold for the following 9835 device */
1744 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1745 dev->subsystem_device == 0x0299)
1746 return;
1747 case PCI_DEVICE_ID_NETMOS_9735:
1748 case PCI_DEVICE_ID_NETMOS_9745:
1749 case PCI_DEVICE_ID_NETMOS_9845:
1750 case PCI_DEVICE_ID_NETMOS_9855:
1751 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1752 num_parallel) {
1753 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1754 "%u serial); changing class SERIAL to OTHER "
1755 "(use parport_serial)\n",
1756 dev->device, num_parallel, num_serial);
1757 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1758 (dev->class & 0xff);
1759 }
1760 }
1761 }
1762 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1763
1764 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1765 {
1766 u16 command, pmcsr;
1767 u8 __iomem *csr;
1768 u8 cmd_hi;
1769 int pm;
1770
1771 switch (dev->device) {
1772 /* PCI IDs taken from drivers/net/e100.c */
1773 case 0x1029:
1774 case 0x1030 ... 0x1034:
1775 case 0x1038 ... 0x103E:
1776 case 0x1050 ... 0x1057:
1777 case 0x1059:
1778 case 0x1064 ... 0x106B:
1779 case 0x1091 ... 0x1095:
1780 case 0x1209:
1781 case 0x1229:
1782 case 0x2449:
1783 case 0x2459:
1784 case 0x245D:
1785 case 0x27DC:
1786 break;
1787 default:
1788 return;
1789 }
1790
1791 /*
1792 * Some firmware hands off the e100 with interrupts enabled,
1793 * which can cause a flood of interrupts if packets are
1794 * received before the driver attaches to the device. So
1795 * disable all e100 interrupts here. The driver will
1796 * re-enable them when it's ready.
1797 */
1798 pci_read_config_word(dev, PCI_COMMAND, &command);
1799
1800 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1801 return;
1802
1803 /*
1804 * Check that the device is in the D0 power state. If it's not,
1805 * there is no point to look any further.
1806 */
1807 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1808 if (pm) {
1809 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1810 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1811 return;
1812 }
1813
1814 /* Convert from PCI bus to resource space. */
1815 csr = ioremap(pci_resource_start(dev, 0), 8);
1816 if (!csr) {
1817 dev_warn(&dev->dev, "Can't map e100 registers\n");
1818 return;
1819 }
1820
1821 cmd_hi = readb(csr + 3);
1822 if (cmd_hi == 0) {
1823 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1824 "disabling\n");
1825 writeb(1, csr + 3);
1826 }
1827
1828 iounmap(csr);
1829 }
1830 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1831
1832 /*
1833 * The 82575 and 82598 may experience data corruption issues when transitioning
1834 * out of L0S. To prevent this we need to disable L0S on the pci-e link
1835 */
1836 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev)
1837 {
1838 dev_info(&dev->dev, "Disabling L0s\n");
1839 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1840 }
1841 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1842 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1844 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1845 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1847 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1848 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1849 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1850 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1851 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1852 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1853 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1854 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1855
1856 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1857 {
1858 /* rev 1 ncr53c810 chips don't set the class at all which means
1859 * they don't get their resources remapped. Fix that here.
1860 */
1861
1862 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1863 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1864 dev->class = PCI_CLASS_STORAGE_SCSI;
1865 }
1866 }
1867 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1868
1869 /* Enable 1k I/O space granularity on the Intel P64H2 */
1870 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1871 {
1872 u16 en1k;
1873 u8 io_base_lo, io_limit_lo;
1874 unsigned long base, limit;
1875 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1876
1877 pci_read_config_word(dev, 0x40, &en1k);
1878
1879 if (en1k & 0x200) {
1880 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1881
1882 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1883 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1884 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1885 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1886
1887 if (base <= limit) {
1888 res->start = base;
1889 res->end = limit + 0x3ff;
1890 }
1891 }
1892 }
1893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1894
1895 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1896 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1897 * in drivers/pci/setup-bus.c
1898 */
1899 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1900 {
1901 u16 en1k, iobl_adr, iobl_adr_1k;
1902 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1903
1904 pci_read_config_word(dev, 0x40, &en1k);
1905
1906 if (en1k & 0x200) {
1907 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1908
1909 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1910
1911 if (iobl_adr != iobl_adr_1k) {
1912 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
1913 iobl_adr,iobl_adr_1k);
1914 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1915 }
1916 }
1917 }
1918 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1919
1920 /* Under some circumstances, AER is not linked with extended capabilities.
1921 * Force it to be linked by setting the corresponding control bit in the
1922 * config space.
1923 */
1924 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1925 {
1926 uint8_t b;
1927 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1928 if (!(b & 0x20)) {
1929 pci_write_config_byte(dev, 0xf41, b | 0x20);
1930 dev_info(&dev->dev,
1931 "Linking AER extended capability\n");
1932 }
1933 }
1934 }
1935 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1936 quirk_nvidia_ck804_pcie_aer_ext_cap);
1937 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1938 quirk_nvidia_ck804_pcie_aer_ext_cap);
1939
1940 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1941 {
1942 /*
1943 * Disable PCI Bus Parking and PCI Master read caching on CX700
1944 * which causes unspecified timing errors with a VT6212L on the PCI
1945 * bus leading to USB2.0 packet loss. The defaults are that these
1946 * features are turned off but some BIOSes turn them on.
1947 */
1948
1949 uint8_t b;
1950 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1951 if (b & 0x40) {
1952 /* Turn off PCI Bus Parking */
1953 pci_write_config_byte(dev, 0x76, b ^ 0x40);
1954
1955 dev_info(&dev->dev,
1956 "Disabling VIA CX700 PCI parking\n");
1957 }
1958 }
1959
1960 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
1961 if (b != 0) {
1962 /* Turn off PCI Master read caching */
1963 pci_write_config_byte(dev, 0x72, 0x0);
1964
1965 /* Set PCI Master Bus time-out to "1x16 PCLK" */
1966 pci_write_config_byte(dev, 0x75, 0x1);
1967
1968 /* Disable "Read FIFO Timer" */
1969 pci_write_config_byte(dev, 0x77, 0x0);
1970
1971 dev_info(&dev->dev,
1972 "Disabling VIA CX700 PCI caching\n");
1973 }
1974 }
1975 }
1976 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1977
1978 /*
1979 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
1980 * VPD end tag will hang the device. This problem was initially
1981 * observed when a vpd entry was created in sysfs
1982 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
1983 * will dump 32k of data. Reading a full 32k will cause an access
1984 * beyond the VPD end tag causing the device to hang. Once the device
1985 * is hung, the bnx2 driver will not be able to reset the device.
1986 * We believe that it is legal to read beyond the end tag and
1987 * therefore the solution is to limit the read/write length.
1988 */
1989 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
1990 {
1991 /*
1992 * Only disable the VPD capability for 5706, 5706S, 5708,
1993 * 5708S and 5709 rev. A
1994 */
1995 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
1996 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
1997 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
1998 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
1999 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
2000 (dev->revision & 0xf0) == 0x0)) {
2001 if (dev->vpd)
2002 dev->vpd->len = 0x80;
2003 }
2004 }
2005
2006 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2007 PCI_DEVICE_ID_NX2_5706,
2008 quirk_brcm_570x_limit_vpd);
2009 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2010 PCI_DEVICE_ID_NX2_5706S,
2011 quirk_brcm_570x_limit_vpd);
2012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2013 PCI_DEVICE_ID_NX2_5708,
2014 quirk_brcm_570x_limit_vpd);
2015 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2016 PCI_DEVICE_ID_NX2_5708S,
2017 quirk_brcm_570x_limit_vpd);
2018 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2019 PCI_DEVICE_ID_NX2_5709,
2020 quirk_brcm_570x_limit_vpd);
2021 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2022 PCI_DEVICE_ID_NX2_5709S,
2023 quirk_brcm_570x_limit_vpd);
2024
2025 /* Originally in EDAC sources for i82875P:
2026 * Intel tells BIOS developers to hide device 6 which
2027 * configures the overflow device access containing
2028 * the DRBs - this is where we expose device 6.
2029 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2030 */
2031 static void __devinit quirk_unhide_mch_dev6(struct pci_dev *dev)
2032 {
2033 u8 reg;
2034
2035 if (pci_read_config_byte(dev, 0xF4, &reg) == 0 && !(reg & 0x02)) {
2036 dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n");
2037 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2038 }
2039 }
2040
2041 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2042 quirk_unhide_mch_dev6);
2043 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2044 quirk_unhide_mch_dev6);
2045
2046
2047 #ifdef CONFIG_PCI_MSI
2048 /* Some chipsets do not support MSI. We cannot easily rely on setting
2049 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2050 * some other busses controlled by the chipset even if Linux is not
2051 * aware of it. Instead of setting the flag on all busses in the
2052 * machine, simply disable MSI globally.
2053 */
2054 static void __init quirk_disable_all_msi(struct pci_dev *dev)
2055 {
2056 pci_no_msi();
2057 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2058 }
2059 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2060 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2061 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2062 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2063 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2064 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2065
2066 /* Disable MSI on chipsets that are known to not support it */
2067 static void __devinit quirk_disable_msi(struct pci_dev *dev)
2068 {
2069 if (dev->subordinate) {
2070 dev_warn(&dev->dev, "MSI quirk detected; "
2071 "subordinate MSI disabled\n");
2072 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2073 }
2074 }
2075 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2076
2077 /* Go through the list of Hypertransport capabilities and
2078 * return 1 if a HT MSI capability is found and enabled */
2079 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
2080 {
2081 int pos, ttl = 48;
2082
2083 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2084 while (pos && ttl--) {
2085 u8 flags;
2086
2087 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2088 &flags) == 0)
2089 {
2090 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2091 flags & HT_MSI_FLAGS_ENABLE ?
2092 "enabled" : "disabled");
2093 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2094 }
2095
2096 pos = pci_find_next_ht_capability(dev, pos,
2097 HT_CAPTYPE_MSI_MAPPING);
2098 }
2099 return 0;
2100 }
2101
2102 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2103 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
2104 {
2105 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2106 dev_warn(&dev->dev, "MSI quirk detected; "
2107 "subordinate MSI disabled\n");
2108 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2109 }
2110 }
2111 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2112 quirk_msi_ht_cap);
2113
2114 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2115 * MSI are supported if the MSI capability set in any of these mappings.
2116 */
2117 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2118 {
2119 struct pci_dev *pdev;
2120
2121 if (!dev->subordinate)
2122 return;
2123
2124 /* check HT MSI cap on this chipset and the root one.
2125 * a single one having MSI is enough to be sure that MSI are supported.
2126 */
2127 pdev = pci_get_slot(dev->bus, 0);
2128 if (!pdev)
2129 return;
2130 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2131 dev_warn(&dev->dev, "MSI quirk detected; "
2132 "subordinate MSI disabled\n");
2133 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2134 }
2135 pci_dev_put(pdev);
2136 }
2137 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2138 quirk_nvidia_ck804_msi_ht_cap);
2139
2140 /* Force enable MSI mapping capability on HT bridges */
2141 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
2142 {
2143 int pos, ttl = 48;
2144
2145 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2146 while (pos && ttl--) {
2147 u8 flags;
2148
2149 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2150 &flags) == 0) {
2151 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2152
2153 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2154 flags | HT_MSI_FLAGS_ENABLE);
2155 }
2156 pos = pci_find_next_ht_capability(dev, pos,
2157 HT_CAPTYPE_MSI_MAPPING);
2158 }
2159 }
2160 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2161 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2162 ht_enable_msi_mapping);
2163
2164 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2165 ht_enable_msi_mapping);
2166
2167 /* The P5N32-SLI Premium motherboard from Asus has a problem with msi
2168 * for the MCP55 NIC. It is not yet determined whether the msi problem
2169 * also affects other devices. As for now, turn off msi for this device.
2170 */
2171 static void __devinit nvenet_msi_disable(struct pci_dev *dev)
2172 {
2173 if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) {
2174 dev_info(&dev->dev,
2175 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n");
2176 dev->no_msi = 1;
2177 }
2178 }
2179 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2180 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2181 nvenet_msi_disable);
2182
2183 static int __devinit ht_check_msi_mapping(struct pci_dev *dev)
2184 {
2185 int pos, ttl = 48;
2186 int found = 0;
2187
2188 /* check if there is HT MSI cap or enabled on this device */
2189 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2190 while (pos && ttl--) {
2191 u8 flags;
2192
2193 if (found < 1)
2194 found = 1;
2195 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2196 &flags) == 0) {
2197 if (flags & HT_MSI_FLAGS_ENABLE) {
2198 if (found < 2) {
2199 found = 2;
2200 break;
2201 }
2202 }
2203 }
2204 pos = pci_find_next_ht_capability(dev, pos,
2205 HT_CAPTYPE_MSI_MAPPING);
2206 }
2207
2208 return found;
2209 }
2210
2211 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge)
2212 {
2213 struct pci_dev *dev;
2214 int pos;
2215 int i, dev_no;
2216 int found = 0;
2217
2218 dev_no = host_bridge->devfn >> 3;
2219 for (i = dev_no + 1; i < 0x20; i++) {
2220 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2221 if (!dev)
2222 continue;
2223
2224 /* found next host bridge ?*/
2225 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2226 if (pos != 0) {
2227 pci_dev_put(dev);
2228 break;
2229 }
2230
2231 if (ht_check_msi_mapping(dev)) {
2232 found = 1;
2233 pci_dev_put(dev);
2234 break;
2235 }
2236 pci_dev_put(dev);
2237 }
2238
2239 return found;
2240 }
2241
2242 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2243 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2244
2245 static int __devinit is_end_of_ht_chain(struct pci_dev *dev)
2246 {
2247 int pos, ctrl_off;
2248 int end = 0;
2249 u16 flags, ctrl;
2250
2251 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2252
2253 if (!pos)
2254 goto out;
2255
2256 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2257
2258 ctrl_off = ((flags >> 10) & 1) ?
2259 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2260 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2261
2262 if (ctrl & (1 << 6))
2263 end = 1;
2264
2265 out:
2266 return end;
2267 }
2268
2269 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev)
2270 {
2271 struct pci_dev *host_bridge;
2272 int pos;
2273 int i, dev_no;
2274 int found = 0;
2275
2276 dev_no = dev->devfn >> 3;
2277 for (i = dev_no; i >= 0; i--) {
2278 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2279 if (!host_bridge)
2280 continue;
2281
2282 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2283 if (pos != 0) {
2284 found = 1;
2285 break;
2286 }
2287 pci_dev_put(host_bridge);
2288 }
2289
2290 if (!found)
2291 return;
2292
2293 /* don't enable end_device/host_bridge with leaf directly here */
2294 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2295 host_bridge_with_leaf(host_bridge))
2296 goto out;
2297
2298 /* root did that ! */
2299 if (msi_ht_cap_enabled(host_bridge))
2300 goto out;
2301
2302 ht_enable_msi_mapping(dev);
2303
2304 out:
2305 pci_dev_put(host_bridge);
2306 }
2307
2308 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev)
2309 {
2310 int pos, ttl = 48;
2311
2312 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2313 while (pos && ttl--) {
2314 u8 flags;
2315
2316 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2317 &flags) == 0) {
2318 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2319
2320 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2321 flags & ~HT_MSI_FLAGS_ENABLE);
2322 }
2323 pos = pci_find_next_ht_capability(dev, pos,
2324 HT_CAPTYPE_MSI_MAPPING);
2325 }
2326 }
2327
2328 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2329 {
2330 struct pci_dev *host_bridge;
2331 int pos;
2332 int found;
2333
2334 /* check if there is HT MSI cap or enabled on this device */
2335 found = ht_check_msi_mapping(dev);
2336
2337 /* no HT MSI CAP */
2338 if (found == 0)
2339 return;
2340
2341 /*
2342 * HT MSI mapping should be disabled on devices that are below
2343 * a non-Hypertransport host bridge. Locate the host bridge...
2344 */
2345 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2346 if (host_bridge == NULL) {
2347 dev_warn(&dev->dev,
2348 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2349 return;
2350 }
2351
2352 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2353 if (pos != 0) {
2354 /* Host bridge is to HT */
2355 if (found == 1) {
2356 /* it is not enabled, try to enable it */
2357 if (all)
2358 ht_enable_msi_mapping(dev);
2359 else
2360 nv_ht_enable_msi_mapping(dev);
2361 }
2362 return;
2363 }
2364
2365 /* HT MSI is not enabled */
2366 if (found == 1)
2367 return;
2368
2369 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2370 ht_disable_msi_mapping(dev);
2371 }
2372
2373 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2374 {
2375 return __nv_msi_ht_cap_quirk(dev, 1);
2376 }
2377
2378 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2379 {
2380 return __nv_msi_ht_cap_quirk(dev, 0);
2381 }
2382
2383 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2384 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2385
2386 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2387 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2388
2389 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
2390 {
2391 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2392 }
2393 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2394 {
2395 struct pci_dev *p;
2396
2397 /* SB700 MSI issue will be fixed at HW level from revision A21,
2398 * we need check PCI REVISION ID of SMBus controller to get SB700
2399 * revision.
2400 */
2401 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2402 NULL);
2403 if (!p)
2404 return;
2405
2406 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2407 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2408 pci_dev_put(p);
2409 }
2410 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2411 PCI_DEVICE_ID_TIGON3_5780,
2412 quirk_msi_intx_disable_bug);
2413 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2414 PCI_DEVICE_ID_TIGON3_5780S,
2415 quirk_msi_intx_disable_bug);
2416 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2417 PCI_DEVICE_ID_TIGON3_5714,
2418 quirk_msi_intx_disable_bug);
2419 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2420 PCI_DEVICE_ID_TIGON3_5714S,
2421 quirk_msi_intx_disable_bug);
2422 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2423 PCI_DEVICE_ID_TIGON3_5715,
2424 quirk_msi_intx_disable_bug);
2425 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2426 PCI_DEVICE_ID_TIGON3_5715S,
2427 quirk_msi_intx_disable_bug);
2428
2429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2430 quirk_msi_intx_disable_ati_bug);
2431 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2432 quirk_msi_intx_disable_ati_bug);
2433 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2434 quirk_msi_intx_disable_ati_bug);
2435 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2436 quirk_msi_intx_disable_ati_bug);
2437 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2438 quirk_msi_intx_disable_ati_bug);
2439
2440 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2441 quirk_msi_intx_disable_bug);
2442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2443 quirk_msi_intx_disable_bug);
2444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2445 quirk_msi_intx_disable_bug);
2446
2447 #endif /* CONFIG_PCI_MSI */
2448
2449 #ifdef CONFIG_PCI_IOV
2450
2451 /*
2452 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the
2453 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the
2454 * old Flash Memory Space.
2455 */
2456 static void __devinit quirk_i82576_sriov(struct pci_dev *dev)
2457 {
2458 int pos, flags;
2459 u32 bar, start, size;
2460
2461 if (PAGE_SIZE > 0x10000)
2462 return;
2463
2464 flags = pci_resource_flags(dev, 0);
2465 if ((flags & PCI_BASE_ADDRESS_SPACE) !=
2466 PCI_BASE_ADDRESS_SPACE_MEMORY ||
2467 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) !=
2468 PCI_BASE_ADDRESS_MEM_TYPE_32)
2469 return;
2470
2471 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
2472 if (!pos)
2473 return;
2474
2475 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar);
2476 if (bar & PCI_BASE_ADDRESS_MEM_MASK)
2477 return;
2478
2479 start = pci_resource_start(dev, 1);
2480 size = pci_resource_len(dev, 1);
2481 if (!start || size != 0x400000 || start & (size - 1))
2482 return;
2483
2484 pci_resource_flags(dev, 1) = 0;
2485 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
2486 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start);
2487 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2);
2488
2489 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n");
2490 }
2491 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov);
2492 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov);
2493 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov);
2494 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov);
2495 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov);
2496 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150d, quirk_i82576_sriov);
2497
2498 #endif /* CONFIG_PCI_IOV */
2499
2500 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2501 struct pci_fixup *end)
2502 {
2503 while (f < end) {
2504 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
2505 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
2506 dev_dbg(&dev->dev, "calling %pF\n", f->hook);
2507 f->hook(dev);
2508 }
2509 f++;
2510 }
2511 }
2512
2513 extern struct pci_fixup __start_pci_fixups_early[];
2514 extern struct pci_fixup __end_pci_fixups_early[];
2515 extern struct pci_fixup __start_pci_fixups_header[];
2516 extern struct pci_fixup __end_pci_fixups_header[];
2517 extern struct pci_fixup __start_pci_fixups_final[];
2518 extern struct pci_fixup __end_pci_fixups_final[];
2519 extern struct pci_fixup __start_pci_fixups_enable[];
2520 extern struct pci_fixup __end_pci_fixups_enable[];
2521 extern struct pci_fixup __start_pci_fixups_resume[];
2522 extern struct pci_fixup __end_pci_fixups_resume[];
2523 extern struct pci_fixup __start_pci_fixups_resume_early[];
2524 extern struct pci_fixup __end_pci_fixups_resume_early[];
2525 extern struct pci_fixup __start_pci_fixups_suspend[];
2526 extern struct pci_fixup __end_pci_fixups_suspend[];
2527
2528
2529 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
2530 {
2531 struct pci_fixup *start, *end;
2532
2533 switch(pass) {
2534 case pci_fixup_early:
2535 start = __start_pci_fixups_early;
2536 end = __end_pci_fixups_early;
2537 break;
2538
2539 case pci_fixup_header:
2540 start = __start_pci_fixups_header;
2541 end = __end_pci_fixups_header;
2542 break;
2543
2544 case pci_fixup_final:
2545 start = __start_pci_fixups_final;
2546 end = __end_pci_fixups_final;
2547 break;
2548
2549 case pci_fixup_enable:
2550 start = __start_pci_fixups_enable;
2551 end = __end_pci_fixups_enable;
2552 break;
2553
2554 case pci_fixup_resume:
2555 start = __start_pci_fixups_resume;
2556 end = __end_pci_fixups_resume;
2557 break;
2558
2559 case pci_fixup_resume_early:
2560 start = __start_pci_fixups_resume_early;
2561 end = __end_pci_fixups_resume_early;
2562 break;
2563
2564 case pci_fixup_suspend:
2565 start = __start_pci_fixups_suspend;
2566 end = __end_pci_fixups_suspend;
2567 break;
2568
2569 default:
2570 /* stupid compiler warning, you would think with an enum... */
2571 return;
2572 }
2573 pci_do_fixups(dev, start, end);
2574 }
2575 #else
2576 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
2577 #endif
2578 EXPORT_SYMBOL(pci_fixup_device);
Support for the Chinese Samsung S3C2440 based development boards