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PCI: don't corrupt enable_cnt when doing manual resource alignment
[linux-2.6/mini2440.git] / drivers / pci / quirks.c
blob0254741bece0827fa70e7a74143c2953b6538546
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 int pcie_mch_quirk;
35 EXPORT_SYMBOL(pcie_mch_quirk);
36
37 #ifdef CONFIG_PCI_QUIRKS
38 /*
39 * This quirk function disables memory decoding and releases memory resources
40 * of the device specified by kernel's boot parameter 'pci=resource_alignment='.
41 * It also rounds up size to specified alignment.
42 * Later on, the kernel will assign page-aligned memory resource back
43 * to the device.
44 */
45 static void __devinit quirk_resource_alignment(struct pci_dev *dev)
46 {
47 int i;
48 struct resource *r;
49 resource_size_t align, size;
50 u16 command;
51
52 if (!pci_is_reassigndev(dev))
53 return;
54
55 if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL &&
56 (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
57 dev_warn(&dev->dev,
58 "Can't reassign resources to host bridge.\n");
59 return;
60 }
61
62 dev_info(&dev->dev,
63 "Disabling memory decoding and releasing memory resources.\n");
64 pci_read_config_word(dev, PCI_COMMAND, &command);
65 command &= ~PCI_COMMAND_MEMORY;
66 pci_write_config_word(dev, PCI_COMMAND, command);
67
68 align = pci_specified_resource_alignment(dev);
69 for (i=0; i < PCI_BRIDGE_RESOURCES; i++) {
70 r = &dev->resource[i];
71 if (!(r->flags & IORESOURCE_MEM))
72 continue;
73 size = resource_size(r);
74 if (size < align) {
75 size = align;
76 dev_info(&dev->dev,
77 "Rounding up size of resource #%d to %#llx.\n",
78 i, (unsigned long long)size);
79 }
80 r->end = size - 1;
81 r->start = 0;
82 }
83 /* Need to disable bridge's resource window,
84 * to enable the kernel to reassign new resource
85 * window later on.
86 */
87 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
88 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
89 for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
90 r = &dev->resource[i];
91 if (!(r->flags & IORESOURCE_MEM))
92 continue;
93 r->end = resource_size(r) - 1;
94 r->start = 0;
95 }
96 pci_disable_bridge_window(dev);
97 }
98 }
99 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment);
100
101 /* The Mellanox Tavor device gives false positive parity errors
102 * Mark this device with a broken_parity_status, to allow
103 * PCI scanning code to "skip" this now blacklisted device.
104 */
105 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
106 {
107 dev->broken_parity_status = 1; /* This device gives false positives */
108 }
109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
110 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
111
112 /* Deal with broken BIOS'es that neglect to enable passive release,
113 which can cause problems in combination with the 82441FX/PPro MTRRs */
114 static void quirk_passive_release(struct pci_dev *dev)
115 {
116 struct pci_dev *d = NULL;
117 unsigned char dlc;
118
119 /* We have to make sure a particular bit is set in the PIIX3
120 ISA bridge, so we have to go out and find it. */
121 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
122 pci_read_config_byte(d, 0x82, &dlc);
123 if (!(dlc & 1<<1)) {
124 dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
125 dlc |= 1<<1;
126 pci_write_config_byte(d, 0x82, dlc);
127 }
128 }
129 }
130 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
131 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
132
133 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
134 but VIA don't answer queries. If you happen to have good contacts at VIA
135 ask them for me please -- Alan
136
137 This appears to be BIOS not version dependent. So presumably there is a
138 chipset level fix */
139
140 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
141 {
142 if (!isa_dma_bridge_buggy) {
143 isa_dma_bridge_buggy=1;
144 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
145 }
146 }
147 /*
148 * Its not totally clear which chipsets are the problematic ones
149 * We know 82C586 and 82C596 variants are affected.
150 */
151 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
153 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
154 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
155 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
156 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
157 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
158
159 /*
160 * Chipsets where PCI->PCI transfers vanish or hang
161 */
162 static void __devinit quirk_nopcipci(struct pci_dev *dev)
163 {
164 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
165 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
166 pci_pci_problems |= PCIPCI_FAIL;
167 }
168 }
169 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
170 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
171
172 static void __devinit quirk_nopciamd(struct pci_dev *dev)
173 {
174 u8 rev;
175 pci_read_config_byte(dev, 0x08, &rev);
176 if (rev == 0x13) {
177 /* Erratum 24 */
178 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
179 pci_pci_problems |= PCIAGP_FAIL;
180 }
181 }
182 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
183
184 /*
185 * Triton requires workarounds to be used by the drivers
186 */
187 static void __devinit quirk_triton(struct pci_dev *dev)
188 {
189 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
190 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
191 pci_pci_problems |= PCIPCI_TRITON;
192 }
193 }
194 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
195 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
196 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
197 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
198
199 /*
200 * VIA Apollo KT133 needs PCI latency patch
201 * Made according to a windows driver based patch by George E. Breese
202 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
203 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
204 * the info on which Mr Breese based his work.
205 *
206 * Updated based on further information from the site and also on
207 * information provided by VIA
208 */
209 static void quirk_vialatency(struct pci_dev *dev)
210 {
211 struct pci_dev *p;
212 u8 busarb;
213 /* Ok we have a potential problem chipset here. Now see if we have
214 a buggy southbridge */
215
216 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
217 if (p!=NULL) {
218 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
219 /* Check for buggy part revisions */
220 if (p->revision < 0x40 || p->revision > 0x42)
221 goto exit;
222 } else {
223 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
224 if (p==NULL) /* No problem parts */
225 goto exit;
226 /* Check for buggy part revisions */
227 if (p->revision < 0x10 || p->revision > 0x12)
228 goto exit;
229 }
230
231 /*
232 * Ok we have the problem. Now set the PCI master grant to
233 * occur every master grant. The apparent bug is that under high
234 * PCI load (quite common in Linux of course) you can get data
235 * loss when the CPU is held off the bus for 3 bus master requests
236 * This happens to include the IDE controllers....
237 *
238 * VIA only apply this fix when an SB Live! is present but under
239 * both Linux and Windows this isnt enough, and we have seen
240 * corruption without SB Live! but with things like 3 UDMA IDE
241 * controllers. So we ignore that bit of the VIA recommendation..
242 */
243
244 pci_read_config_byte(dev, 0x76, &busarb);
245 /* Set bit 4 and bi 5 of byte 76 to 0x01
246 "Master priority rotation on every PCI master grant */
247 busarb &= ~(1<<5);
248 busarb |= (1<<4);
249 pci_write_config_byte(dev, 0x76, busarb);
250 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
251 exit:
252 pci_dev_put(p);
253 }
254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
256 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
257 /* Must restore this on a resume from RAM */
258 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
259 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
260 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
261
262 /*
263 * VIA Apollo VP3 needs ETBF on BT848/878
264 */
265 static void __devinit quirk_viaetbf(struct pci_dev *dev)
266 {
267 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
268 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
269 pci_pci_problems |= PCIPCI_VIAETBF;
270 }
271 }
272 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
273
274 static void __devinit quirk_vsfx(struct pci_dev *dev)
275 {
276 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
277 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
278 pci_pci_problems |= PCIPCI_VSFX;
279 }
280 }
281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
282
283 /*
284 * Ali Magik requires workarounds to be used by the drivers
285 * that DMA to AGP space. Latency must be set to 0xA and triton
286 * workaround applied too
287 * [Info kindly provided by ALi]
288 */
289 static void __init quirk_alimagik(struct pci_dev *dev)
290 {
291 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
292 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
293 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
294 }
295 }
296 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
297 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
298
299 /*
300 * Natoma has some interesting boundary conditions with Zoran stuff
301 * at least
302 */
303 static void __devinit quirk_natoma(struct pci_dev *dev)
304 {
305 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
306 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
307 pci_pci_problems |= PCIPCI_NATOMA;
308 }
309 }
310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
311 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
312 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
314 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
315 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
316
317 /*
318 * This chip can cause PCI parity errors if config register 0xA0 is read
319 * while DMAs are occurring.
320 */
321 static void __devinit quirk_citrine(struct pci_dev *dev)
322 {
323 dev->cfg_size = 0xA0;
324 }
325 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
326
327 /*
328 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
329 * If it's needed, re-allocate the region.
330 */
331 static void __devinit quirk_s3_64M(struct pci_dev *dev)
332 {
333 struct resource *r = &dev->resource[0];
334
335 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
336 r->start = 0;
337 r->end = 0x3ffffff;
338 }
339 }
340 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
341 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
342
343 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
344 unsigned size, int nr, const char *name)
345 {
346 region &= ~(size-1);
347 if (region) {
348 struct pci_bus_region bus_region;
349 struct resource *res = dev->resource + nr;
350
351 res->name = pci_name(dev);
352 res->start = region;
353 res->end = region + size - 1;
354 res->flags = IORESOURCE_IO;
355
356 /* Convert from PCI bus to resource space. */
357 bus_region.start = res->start;
358 bus_region.end = res->end;
359 pcibios_bus_to_resource(dev, res, &bus_region);
360
361 pci_claim_resource(dev, nr);
362 dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
363 }
364 }
365
366 /*
367 * ATI Northbridge setups MCE the processor if you even
368 * read somewhere between 0x3b0->0x3bb or read 0x3d3
369 */
370 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
371 {
372 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
373 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
374 request_region(0x3b0, 0x0C, "RadeonIGP");
375 request_region(0x3d3, 0x01, "RadeonIGP");
376 }
377 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
378
379 /*
380 * Let's make the southbridge information explicit instead
381 * of having to worry about people probing the ACPI areas,
382 * for example.. (Yes, it happens, and if you read the wrong
383 * ACPI register it will put the machine to sleep with no
384 * way of waking it up again. Bummer).
385 *
386 * ALI M7101: Two IO regions pointed to by words at
387 * 0xE0 (64 bytes of ACPI registers)
388 * 0xE2 (32 bytes of SMB registers)
389 */
390 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
391 {
392 u16 region;
393
394 pci_read_config_word(dev, 0xE0, &region);
395 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
396 pci_read_config_word(dev, 0xE2, &region);
397 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
398 }
399 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
400
401 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
402 {
403 u32 devres;
404 u32 mask, size, base;
405
406 pci_read_config_dword(dev, port, &devres);
407 if ((devres & enable) != enable)
408 return;
409 mask = (devres >> 16) & 15;
410 base = devres & 0xffff;
411 size = 16;
412 for (;;) {
413 unsigned bit = size >> 1;
414 if ((bit & mask) == bit)
415 break;
416 size = bit;
417 }
418 /*
419 * For now we only print it out. Eventually we'll want to
420 * reserve it (at least if it's in the 0x1000+ range), but
421 * let's get enough confirmation reports first.
422 */
423 base &= -size;
424 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
425 }
426
427 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
428 {
429 u32 devres;
430 u32 mask, size, base;
431
432 pci_read_config_dword(dev, port, &devres);
433 if ((devres & enable) != enable)
434 return;
435 base = devres & 0xffff0000;
436 mask = (devres & 0x3f) << 16;
437 size = 128 << 16;
438 for (;;) {
439 unsigned bit = size >> 1;
440 if ((bit & mask) == bit)
441 break;
442 size = bit;
443 }
444 /*
445 * For now we only print it out. Eventually we'll want to
446 * reserve it, but let's get enough confirmation reports first.
447 */
448 base &= -size;
449 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
450 }
451
452 /*
453 * PIIX4 ACPI: Two IO regions pointed to by longwords at
454 * 0x40 (64 bytes of ACPI registers)
455 * 0x90 (16 bytes of SMB registers)
456 * and a few strange programmable PIIX4 device resources.
457 */
458 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
459 {
460 u32 region, res_a;
461
462 pci_read_config_dword(dev, 0x40, &region);
463 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
464 pci_read_config_dword(dev, 0x90, &region);
465 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
466
467 /* Device resource A has enables for some of the other ones */
468 pci_read_config_dword(dev, 0x5c, &res_a);
469
470 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
471 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
472
473 /* Device resource D is just bitfields for static resources */
474
475 /* Device 12 enabled? */
476 if (res_a & (1 << 29)) {
477 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
478 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
479 }
480 /* Device 13 enabled? */
481 if (res_a & (1 << 30)) {
482 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
483 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
484 }
485 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
486 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
487 }
488 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
489 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
490
491 /*
492 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
493 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
494 * 0x58 (64 bytes of GPIO I/O space)
495 */
496 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
497 {
498 u32 region;
499
500 pci_read_config_dword(dev, 0x40, &region);
501 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
502
503 pci_read_config_dword(dev, 0x58, &region);
504 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
505 }
506 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
507 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
509 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
511 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
512 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
516
517 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
518 {
519 u32 region;
520
521 pci_read_config_dword(dev, 0x40, &region);
522 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
523
524 pci_read_config_dword(dev, 0x48, &region);
525 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
526 }
527
528 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
529 {
530 u32 val;
531 u32 size, base;
532
533 pci_read_config_dword(dev, reg, &val);
534
535 /* Enabled? */
536 if (!(val & 1))
537 return;
538 base = val & 0xfffc;
539 if (dynsize) {
540 /*
541 * This is not correct. It is 16, 32 or 64 bytes depending on
542 * register D31:F0:ADh bits 5:4.
543 *
544 * But this gets us at least _part_ of it.
545 */
546 size = 16;
547 } else {
548 size = 128;
549 }
550 base &= ~(size-1);
551
552 /* Just print it out for now. We should reserve it after more debugging */
553 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
554 }
555
556 static void __devinit quirk_ich6_lpc(struct pci_dev *dev)
557 {
558 /* Shared ACPI/GPIO decode with all ICH6+ */
559 ich6_lpc_acpi_gpio(dev);
560
561 /* ICH6-specific generic IO decode */
562 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
563 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
564 }
565 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
566 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
567
568 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
569 {
570 u32 val;
571 u32 mask, base;
572
573 pci_read_config_dword(dev, reg, &val);
574
575 /* Enabled? */
576 if (!(val & 1))
577 return;
578
579 /*
580 * IO base in bits 15:2, mask in bits 23:18, both
581 * are dword-based
582 */
583 base = val & 0xfffc;
584 mask = (val >> 16) & 0xfc;
585 mask |= 3;
586
587 /* Just print it out for now. We should reserve it after more debugging */
588 dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
589 }
590
591 /* ICH7-10 has the same common LPC generic IO decode registers */
592 static void __devinit quirk_ich7_lpc(struct pci_dev *dev)
593 {
594 /* We share the common ACPI/DPIO decode with ICH6 */
595 ich6_lpc_acpi_gpio(dev);
596
597 /* And have 4 ICH7+ generic decodes */
598 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
599 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
600 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
601 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
602 }
603 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
604 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
605 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
606 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
607 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
610 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
611 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
612 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
613 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
614 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
616
617 /*
618 * VIA ACPI: One IO region pointed to by longword at
619 * 0x48 or 0x20 (256 bytes of ACPI registers)
620 */
621 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
622 {
623 u32 region;
624
625 if (dev->revision & 0x10) {
626 pci_read_config_dword(dev, 0x48, &region);
627 region &= PCI_BASE_ADDRESS_IO_MASK;
628 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
629 }
630 }
631 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
632
633 /*
634 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
635 * 0x48 (256 bytes of ACPI registers)
636 * 0x70 (128 bytes of hardware monitoring register)
637 * 0x90 (16 bytes of SMB registers)
638 */
639 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
640 {
641 u16 hm;
642 u32 smb;
643
644 quirk_vt82c586_acpi(dev);
645
646 pci_read_config_word(dev, 0x70, &hm);
647 hm &= PCI_BASE_ADDRESS_IO_MASK;
648 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
649
650 pci_read_config_dword(dev, 0x90, &smb);
651 smb &= PCI_BASE_ADDRESS_IO_MASK;
652 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
653 }
654 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
655
656 /*
657 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
658 * 0x88 (128 bytes of power management registers)
659 * 0xd0 (16 bytes of SMB registers)
660 */
661 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
662 {
663 u16 pm, smb;
664
665 pci_read_config_word(dev, 0x88, &pm);
666 pm &= PCI_BASE_ADDRESS_IO_MASK;
667 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
668
669 pci_read_config_word(dev, 0xd0, &smb);
670 smb &= PCI_BASE_ADDRESS_IO_MASK;
671 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
672 }
673 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
674
675
676 #ifdef CONFIG_X86_IO_APIC
677
678 #include <asm/io_apic.h>
679
680 /*
681 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
682 * devices to the external APIC.
683 *
684 * TODO: When we have device-specific interrupt routers,
685 * this code will go away from quirks.
686 */
687 static void quirk_via_ioapic(struct pci_dev *dev)
688 {
689 u8 tmp;
690
691 if (nr_ioapics < 1)
692 tmp = 0; /* nothing routed to external APIC */
693 else
694 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
695
696 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
697 tmp == 0 ? "Disa" : "Ena");
698
699 /* Offset 0x58: External APIC IRQ output control */
700 pci_write_config_byte (dev, 0x58, tmp);
701 }
702 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
703 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
704
705 /*
706 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
707 * This leads to doubled level interrupt rates.
708 * Set this bit to get rid of cycle wastage.
709 * Otherwise uncritical.
710 */
711 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
712 {
713 u8 misc_control2;
714 #define BYPASS_APIC_DEASSERT 8
715
716 pci_read_config_byte(dev, 0x5B, &misc_control2);
717 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
718 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
719 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
720 }
721 }
722 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
723 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
724
725 /*
726 * The AMD io apic can hang the box when an apic irq is masked.
727 * We check all revs >= B0 (yet not in the pre production!) as the bug
728 * is currently marked NoFix
729 *
730 * We have multiple reports of hangs with this chipset that went away with
731 * noapic specified. For the moment we assume it's the erratum. We may be wrong
732 * of course. However the advice is demonstrably good even if so..
733 */
734 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
735 {
736 if (dev->revision >= 0x02) {
737 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
738 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
739 }
740 }
741 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
742
743 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
744 {
745 if (dev->devfn == 0 && dev->bus->number == 0)
746 sis_apic_bug = 1;
747 }
748 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
749 #endif /* CONFIG_X86_IO_APIC */
750
751 /*
752 * Some settings of MMRBC can lead to data corruption so block changes.
753 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
754 */
755 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
756 {
757 if (dev->subordinate && dev->revision <= 0x12) {
758 dev_info(&dev->dev, "AMD8131 rev %x detected; "
759 "disabling PCI-X MMRBC\n", dev->revision);
760 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
761 }
762 }
763 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
764
765 /*
766 * FIXME: it is questionable that quirk_via_acpi
767 * is needed. It shows up as an ISA bridge, and does not
768 * support the PCI_INTERRUPT_LINE register at all. Therefore
769 * it seems like setting the pci_dev's 'irq' to the
770 * value of the ACPI SCI interrupt is only done for convenience.
771 * -jgarzik
772 */
773 static void __devinit quirk_via_acpi(struct pci_dev *d)
774 {
775 /*
776 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
777 */
778 u8 irq;
779 pci_read_config_byte(d, 0x42, &irq);
780 irq &= 0xf;
781 if (irq && (irq != 2))
782 d->irq = irq;
783 }
784 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
785 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
786
787
788 /*
789 * VIA bridges which have VLink
790 */
791
792 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
793
794 static void quirk_via_bridge(struct pci_dev *dev)
795 {
796 /* See what bridge we have and find the device ranges */
797 switch (dev->device) {
798 case PCI_DEVICE_ID_VIA_82C686:
799 /* The VT82C686 is special, it attaches to PCI and can have
800 any device number. All its subdevices are functions of
801 that single device. */
802 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
803 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
804 break;
805 case PCI_DEVICE_ID_VIA_8237:
806 case PCI_DEVICE_ID_VIA_8237A:
807 via_vlink_dev_lo = 15;
808 break;
809 case PCI_DEVICE_ID_VIA_8235:
810 via_vlink_dev_lo = 16;
811 break;
812 case PCI_DEVICE_ID_VIA_8231:
813 case PCI_DEVICE_ID_VIA_8233_0:
814 case PCI_DEVICE_ID_VIA_8233A:
815 case PCI_DEVICE_ID_VIA_8233C_0:
816 via_vlink_dev_lo = 17;
817 break;
818 }
819 }
820 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
821 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
822 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
823 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
824 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
825 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
826 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
827 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
828
829 /**
830 * quirk_via_vlink - VIA VLink IRQ number update
831 * @dev: PCI device
832 *
833 * If the device we are dealing with is on a PIC IRQ we need to
834 * ensure that the IRQ line register which usually is not relevant
835 * for PCI cards, is actually written so that interrupts get sent
836 * to the right place.
837 * We only do this on systems where a VIA south bridge was detected,
838 * and only for VIA devices on the motherboard (see quirk_via_bridge
839 * above).
840 */
841
842 static void quirk_via_vlink(struct pci_dev *dev)
843 {
844 u8 irq, new_irq;
845
846 /* Check if we have VLink at all */
847 if (via_vlink_dev_lo == -1)
848 return;
849
850 new_irq = dev->irq;
851
852 /* Don't quirk interrupts outside the legacy IRQ range */
853 if (!new_irq || new_irq > 15)
854 return;
855
856 /* Internal device ? */
857 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
858 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
859 return;
860
861 /* This is an internal VLink device on a PIC interrupt. The BIOS
862 ought to have set this but may not have, so we redo it */
863
864 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
865 if (new_irq != irq) {
866 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
867 irq, new_irq);
868 udelay(15); /* unknown if delay really needed */
869 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
870 }
871 }
872 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
873
874 /*
875 * VIA VT82C598 has its device ID settable and many BIOSes
876 * set it to the ID of VT82C597 for backward compatibility.
877 * We need to switch it off to be able to recognize the real
878 * type of the chip.
879 */
880 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
881 {
882 pci_write_config_byte(dev, 0xfc, 0);
883 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
884 }
885 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
886
887 /*
888 * CardBus controllers have a legacy base address that enables them
889 * to respond as i82365 pcmcia controllers. We don't want them to
890 * do this even if the Linux CardBus driver is not loaded, because
891 * the Linux i82365 driver does not (and should not) handle CardBus.
892 */
893 static void quirk_cardbus_legacy(struct pci_dev *dev)
894 {
895 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
896 return;
897 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
898 }
899 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
900 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
901
902 /*
903 * Following the PCI ordering rules is optional on the AMD762. I'm not
904 * sure what the designers were smoking but let's not inhale...
905 *
906 * To be fair to AMD, it follows the spec by default, its BIOS people
907 * who turn it off!
908 */
909 static void quirk_amd_ordering(struct pci_dev *dev)
910 {
911 u32 pcic;
912 pci_read_config_dword(dev, 0x4C, &pcic);
913 if ((pcic&6)!=6) {
914 pcic |= 6;
915 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
916 pci_write_config_dword(dev, 0x4C, pcic);
917 pci_read_config_dword(dev, 0x84, &pcic);
918 pcic |= (1<<23); /* Required in this mode */
919 pci_write_config_dword(dev, 0x84, pcic);
920 }
921 }
922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
923 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
924
925 /*
926 * DreamWorks provided workaround for Dunord I-3000 problem
927 *
928 * This card decodes and responds to addresses not apparently
929 * assigned to it. We force a larger allocation to ensure that
930 * nothing gets put too close to it.
931 */
932 static void __devinit quirk_dunord ( struct pci_dev * dev )
933 {
934 struct resource *r = &dev->resource [1];
935 r->start = 0;
936 r->end = 0xffffff;
937 }
938 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
939
940 /*
941 * i82380FB mobile docking controller: its PCI-to-PCI bridge
942 * is subtractive decoding (transparent), and does indicate this
943 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
944 * instead of 0x01.
945 */
946 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
947 {
948 dev->transparent = 1;
949 }
950 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
951 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
952
953 /*
954 * Common misconfiguration of the MediaGX/Geode PCI master that will
955 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
956 * datasheets found at http://www.national.com/ds/GX for info on what
957 * these bits do. <christer@weinigel.se>
958 */
959 static void quirk_mediagx_master(struct pci_dev *dev)
960 {
961 u8 reg;
962 pci_read_config_byte(dev, 0x41, &reg);
963 if (reg & 2) {
964 reg &= ~2;
965 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
966 pci_write_config_byte(dev, 0x41, reg);
967 }
968 }
969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
970 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
971
972 /*
973 * Ensure C0 rev restreaming is off. This is normally done by
974 * the BIOS but in the odd case it is not the results are corruption
975 * hence the presence of a Linux check
976 */
977 static void quirk_disable_pxb(struct pci_dev *pdev)
978 {
979 u16 config;
980
981 if (pdev->revision != 0x04) /* Only C0 requires this */
982 return;
983 pci_read_config_word(pdev, 0x40, &config);
984 if (config & (1<<6)) {
985 config &= ~(1<<6);
986 pci_write_config_word(pdev, 0x40, config);
987 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
988 }
989 }
990 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
991 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
992
993 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
994 {
995 /* set sb600/sb700/sb800 sata to ahci mode */
996 u8 tmp;
997
998 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
999 if (tmp == 0x01) {
1000 pci_read_config_byte(pdev, 0x40, &tmp);
1001 pci_write_config_byte(pdev, 0x40, tmp|1);
1002 pci_write_config_byte(pdev, 0x9, 1);
1003 pci_write_config_byte(pdev, 0xa, 6);
1004 pci_write_config_byte(pdev, 0x40, tmp);
1005
1006 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1007 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
1008 }
1009 }
1010 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1011 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1012 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1013 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, 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
1062 /* This was originally an Alpha specific thing, but it really fits here.
1063 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1064 */
1065 static void __init quirk_eisa_bridge(struct pci_dev *dev)
1066 {
1067 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1068 }
1069 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1070
1071
1072 /*
1073 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1074 * is not activated. The myth is that Asus said that they do not want the
1075 * users to be irritated by just another PCI Device in the Win98 device
1076 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1077 * package 2.7.0 for details)
1078 *
1079 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1080 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1081 * becomes necessary to do this tweak in two steps -- the chosen trigger
1082 * is either the Host bridge (preferred) or on-board VGA controller.
1083 *
1084 * Note that we used to unhide the SMBus that way on Toshiba laptops
1085 * (Satellite A40 and Tecra M2) but then found that the thermal management
1086 * was done by SMM code, which could cause unsynchronized concurrent
1087 * accesses to the SMBus registers, with potentially bad effects. Thus you
1088 * should be very careful when adding new entries: if SMM is accessing the
1089 * Intel SMBus, this is a very good reason to leave it hidden.
1090 *
1091 * Likewise, many recent laptops use ACPI for thermal management. If the
1092 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1093 * natively, and keeping the SMBus hidden is the right thing to do. If you
1094 * are about to add an entry in the table below, please first disassemble
1095 * the DSDT and double-check that there is no code accessing the SMBus.
1096 */
1097 static int asus_hides_smbus;
1098
1099 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
1100 {
1101 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1102 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1103 switch(dev->subsystem_device) {
1104 case 0x8025: /* P4B-LX */
1105 case 0x8070: /* P4B */
1106 case 0x8088: /* P4B533 */
1107 case 0x1626: /* L3C notebook */
1108 asus_hides_smbus = 1;
1109 }
1110 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1111 switch(dev->subsystem_device) {
1112 case 0x80b1: /* P4GE-V */
1113 case 0x80b2: /* P4PE */
1114 case 0x8093: /* P4B533-V */
1115 asus_hides_smbus = 1;
1116 }
1117 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1118 switch(dev->subsystem_device) {
1119 case 0x8030: /* P4T533 */
1120 asus_hides_smbus = 1;
1121 }
1122 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1123 switch (dev->subsystem_device) {
1124 case 0x8070: /* P4G8X Deluxe */
1125 asus_hides_smbus = 1;
1126 }
1127 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1128 switch (dev->subsystem_device) {
1129 case 0x80c9: /* PU-DLS */
1130 asus_hides_smbus = 1;
1131 }
1132 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1133 switch (dev->subsystem_device) {
1134 case 0x1751: /* M2N notebook */
1135 case 0x1821: /* M5N notebook */
1136 asus_hides_smbus = 1;
1137 }
1138 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1139 switch (dev->subsystem_device) {
1140 case 0x184b: /* W1N notebook */
1141 case 0x186a: /* M6Ne notebook */
1142 asus_hides_smbus = 1;
1143 }
1144 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1145 switch (dev->subsystem_device) {
1146 case 0x80f2: /* P4P800-X */
1147 asus_hides_smbus = 1;
1148 }
1149 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1150 switch (dev->subsystem_device) {
1151 case 0x1882: /* M6V notebook */
1152 case 0x1977: /* A6VA notebook */
1153 asus_hides_smbus = 1;
1154 }
1155 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1156 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1157 switch(dev->subsystem_device) {
1158 case 0x088C: /* HP Compaq nc8000 */
1159 case 0x0890: /* HP Compaq nc6000 */
1160 asus_hides_smbus = 1;
1161 }
1162 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1163 switch (dev->subsystem_device) {
1164 case 0x12bc: /* HP D330L */
1165 case 0x12bd: /* HP D530 */
1166 asus_hides_smbus = 1;
1167 }
1168 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1169 switch (dev->subsystem_device) {
1170 case 0x12bf: /* HP xw4100 */
1171 asus_hides_smbus = 1;
1172 }
1173 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1174 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1175 switch(dev->subsystem_device) {
1176 case 0xC00C: /* Samsung P35 notebook */
1177 asus_hides_smbus = 1;
1178 }
1179 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1180 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1181 switch(dev->subsystem_device) {
1182 case 0x0058: /* Compaq Evo N620c */
1183 asus_hides_smbus = 1;
1184 }
1185 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1186 switch(dev->subsystem_device) {
1187 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1188 /* Motherboard doesn't have Host bridge
1189 * subvendor/subdevice IDs, therefore checking
1190 * its on-board VGA controller */
1191 asus_hides_smbus = 1;
1192 }
1193 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1194 switch(dev->subsystem_device) {
1195 case 0x00b8: /* Compaq Evo D510 CMT */
1196 case 0x00b9: /* Compaq Evo D510 SFF */
1197 /* Motherboard doesn't have Host bridge
1198 * subvendor/subdevice IDs and on-board VGA
1199 * controller is disabled if an AGP card is
1200 * inserted, therefore checking USB UHCI
1201 * Controller #1 */
1202 asus_hides_smbus = 1;
1203 }
1204 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1205 switch (dev->subsystem_device) {
1206 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1207 /* Motherboard doesn't have host bridge
1208 * subvendor/subdevice IDs, therefore checking
1209 * its on-board VGA controller */
1210 asus_hides_smbus = 1;
1211 }
1212 }
1213 }
1214 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1215 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1216 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1217 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1218 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1219 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1220 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1221 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1222 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1223 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1224
1225 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1226 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1227 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1228
1229 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1230 {
1231 u16 val;
1232
1233 if (likely(!asus_hides_smbus))
1234 return;
1235
1236 pci_read_config_word(dev, 0xF2, &val);
1237 if (val & 0x8) {
1238 pci_write_config_word(dev, 0xF2, val & (~0x8));
1239 pci_read_config_word(dev, 0xF2, &val);
1240 if (val & 0x8)
1241 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1242 else
1243 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1244 }
1245 }
1246 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1247 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1248 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1249 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1250 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1251 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1252 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1253 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1254 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1255 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1256 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1257 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1258 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1259 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1260
1261 /* It appears we just have one such device. If not, we have a warning */
1262 static void __iomem *asus_rcba_base;
1263 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1264 {
1265 u32 rcba;
1266
1267 if (likely(!asus_hides_smbus))
1268 return;
1269 WARN_ON(asus_rcba_base);
1270
1271 pci_read_config_dword(dev, 0xF0, &rcba);
1272 /* use bits 31:14, 16 kB aligned */
1273 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1274 if (asus_rcba_base == NULL)
1275 return;
1276 }
1277
1278 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1279 {
1280 u32 val;
1281
1282 if (likely(!asus_hides_smbus || !asus_rcba_base))
1283 return;
1284 /* read the Function Disable register, dword mode only */
1285 val = readl(asus_rcba_base + 0x3418);
1286 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1287 }
1288
1289 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1290 {
1291 if (likely(!asus_hides_smbus || !asus_rcba_base))
1292 return;
1293 iounmap(asus_rcba_base);
1294 asus_rcba_base = NULL;
1295 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1296 }
1297
1298 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1299 {
1300 asus_hides_smbus_lpc_ich6_suspend(dev);
1301 asus_hides_smbus_lpc_ich6_resume_early(dev);
1302 asus_hides_smbus_lpc_ich6_resume(dev);
1303 }
1304 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1305 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1306 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1307 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1308
1309 /*
1310 * SiS 96x south bridge: BIOS typically hides SMBus device...
1311 */
1312 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1313 {
1314 u8 val = 0;
1315 pci_read_config_byte(dev, 0x77, &val);
1316 if (val & 0x10) {
1317 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1318 pci_write_config_byte(dev, 0x77, val & ~0x10);
1319 }
1320 }
1321 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1323 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1324 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1325 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1326 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1327 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1328 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1329
1330 /*
1331 * ... This is further complicated by the fact that some SiS96x south
1332 * bridges pretend to be 85C503/5513 instead. In that case see if we
1333 * spotted a compatible north bridge to make sure.
1334 * (pci_find_device doesn't work yet)
1335 *
1336 * We can also enable the sis96x bit in the discovery register..
1337 */
1338 #define SIS_DETECT_REGISTER 0x40
1339
1340 static void quirk_sis_503(struct pci_dev *dev)
1341 {
1342 u8 reg;
1343 u16 devid;
1344
1345 pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1346 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1347 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1348 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1349 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1350 return;
1351 }
1352
1353 /*
1354 * Ok, it now shows up as a 96x.. run the 96x quirk by
1355 * hand in case it has already been processed.
1356 * (depends on link order, which is apparently not guaranteed)
1357 */
1358 dev->device = devid;
1359 quirk_sis_96x_smbus(dev);
1360 }
1361 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1362 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1363
1364
1365 /*
1366 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1367 * and MC97 modem controller are disabled when a second PCI soundcard is
1368 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1369 * -- bjd
1370 */
1371 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1372 {
1373 u8 val;
1374 int asus_hides_ac97 = 0;
1375
1376 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1377 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1378 asus_hides_ac97 = 1;
1379 }
1380
1381 if (!asus_hides_ac97)
1382 return;
1383
1384 pci_read_config_byte(dev, 0x50, &val);
1385 if (val & 0xc0) {
1386 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1387 pci_read_config_byte(dev, 0x50, &val);
1388 if (val & 0xc0)
1389 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1390 else
1391 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1392 }
1393 }
1394 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1395 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1396
1397 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1398
1399 /*
1400 * If we are using libata we can drive this chip properly but must
1401 * do this early on to make the additional device appear during
1402 * the PCI scanning.
1403 */
1404 static void quirk_jmicron_ata(struct pci_dev *pdev)
1405 {
1406 u32 conf1, conf5, class;
1407 u8 hdr;
1408
1409 /* Only poke fn 0 */
1410 if (PCI_FUNC(pdev->devfn))
1411 return;
1412
1413 pci_read_config_dword(pdev, 0x40, &conf1);
1414 pci_read_config_dword(pdev, 0x80, &conf5);
1415
1416 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1417 conf5 &= ~(1 << 24); /* Clear bit 24 */
1418
1419 switch (pdev->device) {
1420 case PCI_DEVICE_ID_JMICRON_JMB360:
1421 /* The controller should be in single function ahci mode */
1422 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1423 break;
1424
1425 case PCI_DEVICE_ID_JMICRON_JMB365:
1426 case PCI_DEVICE_ID_JMICRON_JMB366:
1427 /* Redirect IDE second PATA port to the right spot */
1428 conf5 |= (1 << 24);
1429 /* Fall through */
1430 case PCI_DEVICE_ID_JMICRON_JMB361:
1431 case PCI_DEVICE_ID_JMICRON_JMB363:
1432 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1433 /* Set the class codes correctly and then direct IDE 0 */
1434 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1435 break;
1436
1437 case PCI_DEVICE_ID_JMICRON_JMB368:
1438 /* The controller should be in single function IDE mode */
1439 conf1 |= 0x00C00000; /* Set 22, 23 */
1440 break;
1441 }
1442
1443 pci_write_config_dword(pdev, 0x40, conf1);
1444 pci_write_config_dword(pdev, 0x80, conf5);
1445
1446 /* Update pdev accordingly */
1447 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1448 pdev->hdr_type = hdr & 0x7f;
1449 pdev->multifunction = !!(hdr & 0x80);
1450
1451 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1452 pdev->class = class >> 8;
1453 }
1454 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1455 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1456 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1457 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1458 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1459 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1460 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1461 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1462 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1463 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1464 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1465 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1466
1467 #endif
1468
1469 #ifdef CONFIG_X86_IO_APIC
1470 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1471 {
1472 int i;
1473
1474 if ((pdev->class >> 8) != 0xff00)
1475 return;
1476
1477 /* the first BAR is the location of the IO APIC...we must
1478 * not touch this (and it's already covered by the fixmap), so
1479 * forcibly insert it into the resource tree */
1480 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1481 insert_resource(&iomem_resource, &pdev->resource[0]);
1482
1483 /* The next five BARs all seem to be rubbish, so just clean
1484 * them out */
1485 for (i=1; i < 6; i++) {
1486 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1487 }
1488
1489 }
1490 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1491 #endif
1492
1493 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1494 {
1495 pcie_mch_quirk = 1;
1496 }
1497 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1498 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1499 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1500
1501
1502 /*
1503 * It's possible for the MSI to get corrupted if shpc and acpi
1504 * are used together on certain PXH-based systems.
1505 */
1506 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1507 {
1508 pci_msi_off(dev);
1509 dev->no_msi = 1;
1510 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1511 }
1512 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1513 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1514 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1515 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1516 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1517
1518 /*
1519 * Some Intel PCI Express chipsets have trouble with downstream
1520 * device power management.
1521 */
1522 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1523 {
1524 pci_pm_d3_delay = 120;
1525 dev->no_d1d2 = 1;
1526 }
1527
1528 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1529 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1530 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1531 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1532 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1533 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1534 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1535 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1536 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1537 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1538 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1539 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1540 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1541 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1543 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1544 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1545 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1546 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1547 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1548 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1549
1550 #ifdef CONFIG_X86_IO_APIC
1551 /*
1552 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1553 * remap the original interrupt in the linux kernel to the boot interrupt, so
1554 * that a PCI device's interrupt handler is installed on the boot interrupt
1555 * line instead.
1556 */
1557 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1558 {
1559 if (noioapicquirk || noioapicreroute)
1560 return;
1561
1562 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1563
1564 printk(KERN_INFO "PCI quirk: reroute interrupts for 0x%04x:0x%04x\n",
1565 dev->vendor, dev->device);
1566 return;
1567 }
1568 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1569 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1570 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1571 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1572 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1573 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1574 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1576 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1577 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1578 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1579 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1580 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1581 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1582 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1583 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1584
1585 /*
1586 * On some chipsets we can disable the generation of legacy INTx boot
1587 * interrupts.
1588 */
1589
1590 /*
1591 * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1592 * 300641-004US, section 5.7.3.
1593 */
1594 #define INTEL_6300_IOAPIC_ABAR 0x40
1595 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1596
1597 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1598 {
1599 u16 pci_config_word;
1600
1601 if (noioapicquirk)
1602 return;
1603
1604 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1605 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1606 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1607
1608 printk(KERN_INFO "disabled boot interrupt on device 0x%04x:0x%04x\n",
1609 dev->vendor, dev->device);
1610 }
1611 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1612 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1613
1614 /*
1615 * disable boot interrupts on HT-1000
1616 */
1617 #define BC_HT1000_FEATURE_REG 0x64
1618 #define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1619 #define BC_HT1000_MAP_IDX 0xC00
1620 #define BC_HT1000_MAP_DATA 0xC01
1621
1622 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1623 {
1624 u32 pci_config_dword;
1625 u8 irq;
1626
1627 if (noioapicquirk)
1628 return;
1629
1630 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1631 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1632 BC_HT1000_PIC_REGS_ENABLE);
1633
1634 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1635 outb(irq, BC_HT1000_MAP_IDX);
1636 outb(0x00, BC_HT1000_MAP_DATA);
1637 }
1638
1639 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1640
1641 printk(KERN_INFO "disabled boot interrupts on PCI device"
1642 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1643 }
1644 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1645 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
1646
1647 /*
1648 * disable boot interrupts on AMD and ATI chipsets
1649 */
1650 /*
1651 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1652 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1653 * (due to an erratum).
1654 */
1655 #define AMD_813X_MISC 0x40
1656 #define AMD_813X_NOIOAMODE (1<<0)
1657 #define AMD_813X_REV_B2 0x13
1658
1659 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1660 {
1661 u32 pci_config_dword;
1662
1663 if (noioapicquirk)
1664 return;
1665 if (dev->revision == AMD_813X_REV_B2)
1666 return;
1667
1668 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1669 pci_config_dword &= ~AMD_813X_NOIOAMODE;
1670 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1671
1672 printk(KERN_INFO "disabled boot interrupts on PCI device "
1673 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1674 }
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1676 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
1677
1678 #define AMD_8111_PCI_IRQ_ROUTING 0x56
1679
1680 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1681 {
1682 u16 pci_config_word;
1683
1684 if (noioapicquirk)
1685 return;
1686
1687 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1688 if (!pci_config_word) {
1689 printk(KERN_INFO "boot interrupts on PCI device 0x%04x:0x%04x "
1690 "already disabled\n",
1691 dev->vendor, dev->device);
1692 return;
1693 }
1694 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1695 printk(KERN_INFO "disabled boot interrupts on PCI device "
1696 "0x%04x:0x%04x\n", dev->vendor, dev->device);
1697 }
1698 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1699 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
1700 #endif /* CONFIG_X86_IO_APIC */
1701
1702 /*
1703 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1704 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1705 * Re-allocate the region if needed...
1706 */
1707 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1708 {
1709 struct resource *r = &dev->resource[0];
1710
1711 if (r->start & 0x8) {
1712 r->start = 0;
1713 r->end = 0xf;
1714 }
1715 }
1716 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1717 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1718 quirk_tc86c001_ide);
1719
1720 static void __devinit quirk_netmos(struct pci_dev *dev)
1721 {
1722 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1723 unsigned int num_serial = dev->subsystem_device & 0xf;
1724
1725 /*
1726 * These Netmos parts are multiport serial devices with optional
1727 * parallel ports. Even when parallel ports are present, they
1728 * are identified as class SERIAL, which means the serial driver
1729 * will claim them. To prevent this, mark them as class OTHER.
1730 * These combo devices should be claimed by parport_serial.
1731 *
1732 * The subdevice ID is of the form 0x00PS, where <P> is the number
1733 * of parallel ports and <S> is the number of serial ports.
1734 */
1735 switch (dev->device) {
1736 case PCI_DEVICE_ID_NETMOS_9835:
1737 /* Well, this rule doesn't hold for the following 9835 device */
1738 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
1739 dev->subsystem_device == 0x0299)
1740 return;
1741 case PCI_DEVICE_ID_NETMOS_9735:
1742 case PCI_DEVICE_ID_NETMOS_9745:
1743 case PCI_DEVICE_ID_NETMOS_9845:
1744 case PCI_DEVICE_ID_NETMOS_9855:
1745 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1746 num_parallel) {
1747 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1748 "%u serial); changing class SERIAL to OTHER "
1749 "(use parport_serial)\n",
1750 dev->device, num_parallel, num_serial);
1751 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1752 (dev->class & 0xff);
1753 }
1754 }
1755 }
1756 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1757
1758 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1759 {
1760 u16 command, pmcsr;
1761 u8 __iomem *csr;
1762 u8 cmd_hi;
1763 int pm;
1764
1765 switch (dev->device) {
1766 /* PCI IDs taken from drivers/net/e100.c */
1767 case 0x1029:
1768 case 0x1030 ... 0x1034:
1769 case 0x1038 ... 0x103E:
1770 case 0x1050 ... 0x1057:
1771 case 0x1059:
1772 case 0x1064 ... 0x106B:
1773 case 0x1091 ... 0x1095:
1774 case 0x1209:
1775 case 0x1229:
1776 case 0x2449:
1777 case 0x2459:
1778 case 0x245D:
1779 case 0x27DC:
1780 break;
1781 default:
1782 return;
1783 }
1784
1785 /*
1786 * Some firmware hands off the e100 with interrupts enabled,
1787 * which can cause a flood of interrupts if packets are
1788 * received before the driver attaches to the device. So
1789 * disable all e100 interrupts here. The driver will
1790 * re-enable them when it's ready.
1791 */
1792 pci_read_config_word(dev, PCI_COMMAND, &command);
1793
1794 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1795 return;
1796
1797 /*
1798 * Check that the device is in the D0 power state. If it's not,
1799 * there is no point to look any further.
1800 */
1801 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1802 if (pm) {
1803 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1804 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1805 return;
1806 }
1807
1808 /* Convert from PCI bus to resource space. */
1809 csr = ioremap(pci_resource_start(dev, 0), 8);
1810 if (!csr) {
1811 dev_warn(&dev->dev, "Can't map e100 registers\n");
1812 return;
1813 }
1814
1815 cmd_hi = readb(csr + 3);
1816 if (cmd_hi == 0) {
1817 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1818 "disabling\n");
1819 writeb(1, csr + 3);
1820 }
1821
1822 iounmap(csr);
1823 }
1824 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1825
1826 /*
1827 * The 82575 and 82598 may experience data corruption issues when transitioning
1828 * out of L0S. To prevent this we need to disable L0S on the pci-e link
1829 */
1830 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev)
1831 {
1832 dev_info(&dev->dev, "Disabling L0s\n");
1833 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1834 }
1835 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1836 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1837 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1838 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1839 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1840 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1841 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1842 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1844 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1845 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1847 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1848 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1849
1850 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1851 {
1852 /* rev 1 ncr53c810 chips don't set the class at all which means
1853 * they don't get their resources remapped. Fix that here.
1854 */
1855
1856 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1857 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1858 dev->class = PCI_CLASS_STORAGE_SCSI;
1859 }
1860 }
1861 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1862
1863 /* Enable 1k I/O space granularity on the Intel P64H2 */
1864 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1865 {
1866 u16 en1k;
1867 u8 io_base_lo, io_limit_lo;
1868 unsigned long base, limit;
1869 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1870
1871 pci_read_config_word(dev, 0x40, &en1k);
1872
1873 if (en1k & 0x200) {
1874 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1875
1876 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1877 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1878 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1879 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1880
1881 if (base <= limit) {
1882 res->start = base;
1883 res->end = limit + 0x3ff;
1884 }
1885 }
1886 }
1887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1888
1889 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1890 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1891 * in drivers/pci/setup-bus.c
1892 */
1893 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1894 {
1895 u16 en1k, iobl_adr, iobl_adr_1k;
1896 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1897
1898 pci_read_config_word(dev, 0x40, &en1k);
1899
1900 if (en1k & 0x200) {
1901 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1902
1903 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1904
1905 if (iobl_adr != iobl_adr_1k) {
1906 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
1907 iobl_adr,iobl_adr_1k);
1908 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1909 }
1910 }
1911 }
1912 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1913
1914 /* Under some circumstances, AER is not linked with extended capabilities.
1915 * Force it to be linked by setting the corresponding control bit in the
1916 * config space.
1917 */
1918 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1919 {
1920 uint8_t b;
1921 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1922 if (!(b & 0x20)) {
1923 pci_write_config_byte(dev, 0xf41, b | 0x20);
1924 dev_info(&dev->dev,
1925 "Linking AER extended capability\n");
1926 }
1927 }
1928 }
1929 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1930 quirk_nvidia_ck804_pcie_aer_ext_cap);
1931 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1932 quirk_nvidia_ck804_pcie_aer_ext_cap);
1933
1934 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1935 {
1936 /*
1937 * Disable PCI Bus Parking and PCI Master read caching on CX700
1938 * which causes unspecified timing errors with a VT6212L on the PCI
1939 * bus leading to USB2.0 packet loss. The defaults are that these
1940 * features are turned off but some BIOSes turn them on.
1941 */
1942
1943 uint8_t b;
1944 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1945 if (b & 0x40) {
1946 /* Turn off PCI Bus Parking */
1947 pci_write_config_byte(dev, 0x76, b ^ 0x40);
1948
1949 dev_info(&dev->dev,
1950 "Disabling VIA CX700 PCI parking\n");
1951 }
1952 }
1953
1954 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
1955 if (b != 0) {
1956 /* Turn off PCI Master read caching */
1957 pci_write_config_byte(dev, 0x72, 0x0);
1958
1959 /* Set PCI Master Bus time-out to "1x16 PCLK" */
1960 pci_write_config_byte(dev, 0x75, 0x1);
1961
1962 /* Disable "Read FIFO Timer" */
1963 pci_write_config_byte(dev, 0x77, 0x0);
1964
1965 dev_info(&dev->dev,
1966 "Disabling VIA CX700 PCI caching\n");
1967 }
1968 }
1969 }
1970 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1971
1972 /*
1973 * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
1974 * VPD end tag will hang the device. This problem was initially
1975 * observed when a vpd entry was created in sysfs
1976 * ('/sys/bus/pci/devices/<id>/vpd'). A read to this sysfs entry
1977 * will dump 32k of data. Reading a full 32k will cause an access
1978 * beyond the VPD end tag causing the device to hang. Once the device
1979 * is hung, the bnx2 driver will not be able to reset the device.
1980 * We believe that it is legal to read beyond the end tag and
1981 * therefore the solution is to limit the read/write length.
1982 */
1983 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
1984 {
1985 /*
1986 * Only disable the VPD capability for 5706, 5706S, 5708,
1987 * 5708S and 5709 rev. A
1988 */
1989 if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
1990 (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
1991 (dev->device == PCI_DEVICE_ID_NX2_5708) ||
1992 (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
1993 ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
1994 (dev->revision & 0xf0) == 0x0)) {
1995 if (dev->vpd)
1996 dev->vpd->len = 0x80;
1997 }
1998 }
1999
2000 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2001 PCI_DEVICE_ID_NX2_5706,
2002 quirk_brcm_570x_limit_vpd);
2003 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2004 PCI_DEVICE_ID_NX2_5706S,
2005 quirk_brcm_570x_limit_vpd);
2006 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2007 PCI_DEVICE_ID_NX2_5708,
2008 quirk_brcm_570x_limit_vpd);
2009 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2010 PCI_DEVICE_ID_NX2_5708S,
2011 quirk_brcm_570x_limit_vpd);
2012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2013 PCI_DEVICE_ID_NX2_5709,
2014 quirk_brcm_570x_limit_vpd);
2015 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2016 PCI_DEVICE_ID_NX2_5709S,
2017 quirk_brcm_570x_limit_vpd);
2018
2019 #ifdef CONFIG_PCI_MSI
2020 /* Some chipsets do not support MSI. We cannot easily rely on setting
2021 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
2022 * some other busses controlled by the chipset even if Linux is not
2023 * aware of it. Instead of setting the flag on all busses in the
2024 * machine, simply disable MSI globally.
2025 */
2026 static void __init quirk_disable_all_msi(struct pci_dev *dev)
2027 {
2028 pci_no_msi();
2029 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
2030 }
2031 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2032 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2033 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2034 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2035 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2036
2037 /* Disable MSI on chipsets that are known to not support it */
2038 static void __devinit quirk_disable_msi(struct pci_dev *dev)
2039 {
2040 if (dev->subordinate) {
2041 dev_warn(&dev->dev, "MSI quirk detected; "
2042 "subordinate MSI disabled\n");
2043 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2044 }
2045 }
2046 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2047
2048 /* Go through the list of Hypertransport capabilities and
2049 * return 1 if a HT MSI capability is found and enabled */
2050 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
2051 {
2052 int pos, ttl = 48;
2053
2054 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2055 while (pos && ttl--) {
2056 u8 flags;
2057
2058 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2059 &flags) == 0)
2060 {
2061 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
2062 flags & HT_MSI_FLAGS_ENABLE ?
2063 "enabled" : "disabled");
2064 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2065 }
2066
2067 pos = pci_find_next_ht_capability(dev, pos,
2068 HT_CAPTYPE_MSI_MAPPING);
2069 }
2070 return 0;
2071 }
2072
2073 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
2074 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
2075 {
2076 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2077 dev_warn(&dev->dev, "MSI quirk detected; "
2078 "subordinate MSI disabled\n");
2079 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2080 }
2081 }
2082 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2083 quirk_msi_ht_cap);
2084
2085 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2086 * MSI are supported if the MSI capability set in any of these mappings.
2087 */
2088 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2089 {
2090 struct pci_dev *pdev;
2091
2092 if (!dev->subordinate)
2093 return;
2094
2095 /* check HT MSI cap on this chipset and the root one.
2096 * a single one having MSI is enough to be sure that MSI are supported.
2097 */
2098 pdev = pci_get_slot(dev->bus, 0);
2099 if (!pdev)
2100 return;
2101 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2102 dev_warn(&dev->dev, "MSI quirk detected; "
2103 "subordinate MSI disabled\n");
2104 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2105 }
2106 pci_dev_put(pdev);
2107 }
2108 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2109 quirk_nvidia_ck804_msi_ht_cap);
2110
2111 /* Force enable MSI mapping capability on HT bridges */
2112 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
2113 {
2114 int pos, ttl = 48;
2115
2116 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2117 while (pos && ttl--) {
2118 u8 flags;
2119
2120 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2121 &flags) == 0) {
2122 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2123
2124 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2125 flags | HT_MSI_FLAGS_ENABLE);
2126 }
2127 pos = pci_find_next_ht_capability(dev, pos,
2128 HT_CAPTYPE_MSI_MAPPING);
2129 }
2130 }
2131 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2132 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2133 ht_enable_msi_mapping);
2134
2135 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2136 ht_enable_msi_mapping);
2137
2138 /* The P5N32-SLI Premium motherboard from Asus has a problem with msi
2139 * for the MCP55 NIC. It is not yet determined whether the msi problem
2140 * also affects other devices. As for now, turn off msi for this device.
2141 */
2142 static void __devinit nvenet_msi_disable(struct pci_dev *dev)
2143 {
2144 if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) {
2145 dev_info(&dev->dev,
2146 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n");
2147 dev->no_msi = 1;
2148 }
2149 }
2150 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2151 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2152 nvenet_msi_disable);
2153
2154 static int __devinit ht_check_msi_mapping(struct pci_dev *dev)
2155 {
2156 int pos, ttl = 48;
2157 int found = 0;
2158
2159 /* check if there is HT MSI cap or enabled on this device */
2160 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2161 while (pos && ttl--) {
2162 u8 flags;
2163
2164 if (found < 1)
2165 found = 1;
2166 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2167 &flags) == 0) {
2168 if (flags & HT_MSI_FLAGS_ENABLE) {
2169 if (found < 2) {
2170 found = 2;
2171 break;
2172 }
2173 }
2174 }
2175 pos = pci_find_next_ht_capability(dev, pos,
2176 HT_CAPTYPE_MSI_MAPPING);
2177 }
2178
2179 return found;
2180 }
2181
2182 static int __devinit host_bridge_with_leaf(struct pci_dev *host_bridge)
2183 {
2184 struct pci_dev *dev;
2185 int pos;
2186 int i, dev_no;
2187 int found = 0;
2188
2189 dev_no = host_bridge->devfn >> 3;
2190 for (i = dev_no + 1; i < 0x20; i++) {
2191 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2192 if (!dev)
2193 continue;
2194
2195 /* found next host bridge ?*/
2196 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2197 if (pos != 0) {
2198 pci_dev_put(dev);
2199 break;
2200 }
2201
2202 if (ht_check_msi_mapping(dev)) {
2203 found = 1;
2204 pci_dev_put(dev);
2205 break;
2206 }
2207 pci_dev_put(dev);
2208 }
2209
2210 return found;
2211 }
2212
2213 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2214 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2215
2216 static int __devinit is_end_of_ht_chain(struct pci_dev *dev)
2217 {
2218 int pos, ctrl_off;
2219 int end = 0;
2220 u16 flags, ctrl;
2221
2222 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2223
2224 if (!pos)
2225 goto out;
2226
2227 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2228
2229 ctrl_off = ((flags >> 10) & 1) ?
2230 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2231 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2232
2233 if (ctrl & (1 << 6))
2234 end = 1;
2235
2236 out:
2237 return end;
2238 }
2239
2240 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev)
2241 {
2242 struct pci_dev *host_bridge;
2243 int pos;
2244 int i, dev_no;
2245 int found = 0;
2246
2247 dev_no = dev->devfn >> 3;
2248 for (i = dev_no; i >= 0; i--) {
2249 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2250 if (!host_bridge)
2251 continue;
2252
2253 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2254 if (pos != 0) {
2255 found = 1;
2256 break;
2257 }
2258 pci_dev_put(host_bridge);
2259 }
2260
2261 if (!found)
2262 return;
2263
2264 /* don't enable end_device/host_bridge with leaf directly here */
2265 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2266 host_bridge_with_leaf(host_bridge))
2267 goto out;
2268
2269 /* root did that ! */
2270 if (msi_ht_cap_enabled(host_bridge))
2271 goto out;
2272
2273 ht_enable_msi_mapping(dev);
2274
2275 out:
2276 pci_dev_put(host_bridge);
2277 }
2278
2279 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev)
2280 {
2281 int pos, ttl = 48;
2282
2283 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2284 while (pos && ttl--) {
2285 u8 flags;
2286
2287 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2288 &flags) == 0) {
2289 dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2290
2291 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2292 flags & ~HT_MSI_FLAGS_ENABLE);
2293 }
2294 pos = pci_find_next_ht_capability(dev, pos,
2295 HT_CAPTYPE_MSI_MAPPING);
2296 }
2297 }
2298
2299 static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2300 {
2301 struct pci_dev *host_bridge;
2302 int pos;
2303 int found;
2304
2305 /* check if there is HT MSI cap or enabled on this device */
2306 found = ht_check_msi_mapping(dev);
2307
2308 /* no HT MSI CAP */
2309 if (found == 0)
2310 return;
2311
2312 /*
2313 * HT MSI mapping should be disabled on devices that are below
2314 * a non-Hypertransport host bridge. Locate the host bridge...
2315 */
2316 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2317 if (host_bridge == NULL) {
2318 dev_warn(&dev->dev,
2319 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2320 return;
2321 }
2322
2323 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2324 if (pos != 0) {
2325 /* Host bridge is to HT */
2326 if (found == 1) {
2327 /* it is not enabled, try to enable it */
2328 if (all)
2329 ht_enable_msi_mapping(dev);
2330 else
2331 nv_ht_enable_msi_mapping(dev);
2332 }
2333 return;
2334 }
2335
2336 /* HT MSI is not enabled */
2337 if (found == 1)
2338 return;
2339
2340 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2341 ht_disable_msi_mapping(dev);
2342 }
2343
2344 static void __devinit nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2345 {
2346 return __nv_msi_ht_cap_quirk(dev, 1);
2347 }
2348
2349 static void __devinit nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2350 {
2351 return __nv_msi_ht_cap_quirk(dev, 0);
2352 }
2353
2354 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2355
2356 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2357
2358 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
2359 {
2360 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2361 }
2362 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2363 {
2364 struct pci_dev *p;
2365
2366 /* SB700 MSI issue will be fixed at HW level from revision A21,
2367 * we need check PCI REVISION ID of SMBus controller to get SB700
2368 * revision.
2369 */
2370 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2371 NULL);
2372 if (!p)
2373 return;
2374
2375 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2376 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2377 pci_dev_put(p);
2378 }
2379 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2380 PCI_DEVICE_ID_TIGON3_5780,
2381 quirk_msi_intx_disable_bug);
2382 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2383 PCI_DEVICE_ID_TIGON3_5780S,
2384 quirk_msi_intx_disable_bug);
2385 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2386 PCI_DEVICE_ID_TIGON3_5714,
2387 quirk_msi_intx_disable_bug);
2388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2389 PCI_DEVICE_ID_TIGON3_5714S,
2390 quirk_msi_intx_disable_bug);
2391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2392 PCI_DEVICE_ID_TIGON3_5715,
2393 quirk_msi_intx_disable_bug);
2394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2395 PCI_DEVICE_ID_TIGON3_5715S,
2396 quirk_msi_intx_disable_bug);
2397
2398 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2399 quirk_msi_intx_disable_ati_bug);
2400 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2401 quirk_msi_intx_disable_ati_bug);
2402 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2403 quirk_msi_intx_disable_ati_bug);
2404 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2405 quirk_msi_intx_disable_ati_bug);
2406 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2407 quirk_msi_intx_disable_ati_bug);
2408
2409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2410 quirk_msi_intx_disable_bug);
2411 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2412 quirk_msi_intx_disable_bug);
2413 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2414 quirk_msi_intx_disable_bug);
2415
2416 #endif /* CONFIG_PCI_MSI */
2417
2418 #ifdef CONFIG_PCI_IOV
2419
2420 /*
2421 * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the
2422 * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the
2423 * old Flash Memory Space.
2424 */
2425 static void __devinit quirk_i82576_sriov(struct pci_dev *dev)
2426 {
2427 int pos, flags;
2428 u32 bar, start, size;
2429
2430 if (PAGE_SIZE > 0x10000)
2431 return;
2432
2433 flags = pci_resource_flags(dev, 0);
2434 if ((flags & PCI_BASE_ADDRESS_SPACE) !=
2435 PCI_BASE_ADDRESS_SPACE_MEMORY ||
2436 (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) !=
2437 PCI_BASE_ADDRESS_MEM_TYPE_32)
2438 return;
2439
2440 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
2441 if (!pos)
2442 return;
2443
2444 pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar);
2445 if (bar & PCI_BASE_ADDRESS_MEM_MASK)
2446 return;
2447
2448 start = pci_resource_start(dev, 1);
2449 size = pci_resource_len(dev, 1);
2450 if (!start || size != 0x400000 || start & (size - 1))
2451 return;
2452
2453 pci_resource_flags(dev, 1) = 0;
2454 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
2455 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start);
2456 pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2);
2457
2458 dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n");
2459 }
2460 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov);
2461 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov);
2462 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov);
2463
2464 #endif /* CONFIG_PCI_IOV */
2465
2466 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2467 struct pci_fixup *end)
2468 {
2469 while (f < end) {
2470 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
2471 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
2472 dev_dbg(&dev->dev, "calling %pF\n", f->hook);
2473 f->hook(dev);
2474 }
2475 f++;
2476 }
2477 }
2478
2479 extern struct pci_fixup __start_pci_fixups_early[];
2480 extern struct pci_fixup __end_pci_fixups_early[];
2481 extern struct pci_fixup __start_pci_fixups_header[];
2482 extern struct pci_fixup __end_pci_fixups_header[];
2483 extern struct pci_fixup __start_pci_fixups_final[];
2484 extern struct pci_fixup __end_pci_fixups_final[];
2485 extern struct pci_fixup __start_pci_fixups_enable[];
2486 extern struct pci_fixup __end_pci_fixups_enable[];
2487 extern struct pci_fixup __start_pci_fixups_resume[];
2488 extern struct pci_fixup __end_pci_fixups_resume[];
2489 extern struct pci_fixup __start_pci_fixups_resume_early[];
2490 extern struct pci_fixup __end_pci_fixups_resume_early[];
2491 extern struct pci_fixup __start_pci_fixups_suspend[];
2492 extern struct pci_fixup __end_pci_fixups_suspend[];
2493
2494
2495 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
2496 {
2497 struct pci_fixup *start, *end;
2498
2499 switch(pass) {
2500 case pci_fixup_early:
2501 start = __start_pci_fixups_early;
2502 end = __end_pci_fixups_early;
2503 break;
2504
2505 case pci_fixup_header:
2506 start = __start_pci_fixups_header;
2507 end = __end_pci_fixups_header;
2508 break;
2509
2510 case pci_fixup_final:
2511 start = __start_pci_fixups_final;
2512 end = __end_pci_fixups_final;
2513 break;
2514
2515 case pci_fixup_enable:
2516 start = __start_pci_fixups_enable;
2517 end = __end_pci_fixups_enable;
2518 break;
2519
2520 case pci_fixup_resume:
2521 start = __start_pci_fixups_resume;
2522 end = __end_pci_fixups_resume;
2523 break;
2524
2525 case pci_fixup_resume_early:
2526 start = __start_pci_fixups_resume_early;
2527 end = __end_pci_fixups_resume_early;
2528 break;
2529
2530 case pci_fixup_suspend:
2531 start = __start_pci_fixups_suspend;
2532 end = __end_pci_fixups_suspend;
2533 break;
2534
2535 default:
2536 /* stupid compiler warning, you would think with an enum... */
2537 return;
2538 }
2539 pci_do_fixups(dev, start, end);
2540 }
2541 #else
2542 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
2543 #endif
2544 EXPORT_SYMBOL(pci_fixup_device);
Support for the Chinese Samsung S3C2440 based development boards