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x86: use not_pci bitmap #4
[linux-2.6/mini2440.git] / drivers / pci / quirks.c
blobe887aa45c9cdd4ad41863f199f9f26f4551659a4
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 "pci.h"
26
27 /* The Mellanox Tavor device gives false positive parity errors
28 * Mark this device with a broken_parity_status, to allow
29 * PCI scanning code to "skip" this now blacklisted device.
30 */
31 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
32 {
33 dev->broken_parity_status = 1; /* This device gives false positives */
34 }
35 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
36 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
37
38 /* Deal with broken BIOS'es that neglect to enable passive release,
39 which can cause problems in combination with the 82441FX/PPro MTRRs */
40 static void quirk_passive_release(struct pci_dev *dev)
41 {
42 struct pci_dev *d = NULL;
43 unsigned char dlc;
44
45 /* We have to make sure a particular bit is set in the PIIX3
46 ISA bridge, so we have to go out and find it. */
47 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
48 pci_read_config_byte(d, 0x82, &dlc);
49 if (!(dlc & 1<<1)) {
50 dev_err(&d->dev, "PIIX3: Enabling Passive Release\n");
51 dlc |= 1<<1;
52 pci_write_config_byte(d, 0x82, dlc);
53 }
54 }
55 }
56 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
57 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
58
59 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
60 but VIA don't answer queries. If you happen to have good contacts at VIA
61 ask them for me please -- Alan
62
63 This appears to be BIOS not version dependent. So presumably there is a
64 chipset level fix */
65 int isa_dma_bridge_buggy;
66 EXPORT_SYMBOL(isa_dma_bridge_buggy);
67
68 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
69 {
70 if (!isa_dma_bridge_buggy) {
71 isa_dma_bridge_buggy=1;
72 dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
73 }
74 }
75 /*
76 * Its not totally clear which chipsets are the problematic ones
77 * We know 82C586 and 82C596 variants are affected.
78 */
79 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
80 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
81 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
82 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
83 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
84 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
85 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
86
87 int pci_pci_problems;
88 EXPORT_SYMBOL(pci_pci_problems);
89
90 /*
91 * Chipsets where PCI->PCI transfers vanish or hang
92 */
93 static void __devinit quirk_nopcipci(struct pci_dev *dev)
94 {
95 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
96 dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
97 pci_pci_problems |= PCIPCI_FAIL;
98 }
99 }
100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
102
103 static void __devinit quirk_nopciamd(struct pci_dev *dev)
104 {
105 u8 rev;
106 pci_read_config_byte(dev, 0x08, &rev);
107 if (rev == 0x13) {
108 /* Erratum 24 */
109 dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
110 pci_pci_problems |= PCIAGP_FAIL;
111 }
112 }
113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
114
115 /*
116 * Triton requires workarounds to be used by the drivers
117 */
118 static void __devinit quirk_triton(struct pci_dev *dev)
119 {
120 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
121 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
122 pci_pci_problems |= PCIPCI_TRITON;
123 }
124 }
125 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
126 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
127 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
128 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
129
130 /*
131 * VIA Apollo KT133 needs PCI latency patch
132 * Made according to a windows driver based patch by George E. Breese
133 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
134 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
135 * the info on which Mr Breese based his work.
136 *
137 * Updated based on further information from the site and also on
138 * information provided by VIA
139 */
140 static void quirk_vialatency(struct pci_dev *dev)
141 {
142 struct pci_dev *p;
143 u8 busarb;
144 /* Ok we have a potential problem chipset here. Now see if we have
145 a buggy southbridge */
146
147 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
148 if (p!=NULL) {
149 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
150 /* Check for buggy part revisions */
151 if (p->revision < 0x40 || p->revision > 0x42)
152 goto exit;
153 } else {
154 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
155 if (p==NULL) /* No problem parts */
156 goto exit;
157 /* Check for buggy part revisions */
158 if (p->revision < 0x10 || p->revision > 0x12)
159 goto exit;
160 }
161
162 /*
163 * Ok we have the problem. Now set the PCI master grant to
164 * occur every master grant. The apparent bug is that under high
165 * PCI load (quite common in Linux of course) you can get data
166 * loss when the CPU is held off the bus for 3 bus master requests
167 * This happens to include the IDE controllers....
168 *
169 * VIA only apply this fix when an SB Live! is present but under
170 * both Linux and Windows this isnt enough, and we have seen
171 * corruption without SB Live! but with things like 3 UDMA IDE
172 * controllers. So we ignore that bit of the VIA recommendation..
173 */
174
175 pci_read_config_byte(dev, 0x76, &busarb);
176 /* Set bit 4 and bi 5 of byte 76 to 0x01
177 "Master priority rotation on every PCI master grant */
178 busarb &= ~(1<<5);
179 busarb |= (1<<4);
180 pci_write_config_byte(dev, 0x76, busarb);
181 dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
182 exit:
183 pci_dev_put(p);
184 }
185 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
188 /* Must restore this on a resume from RAM */
189 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
190 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
191 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
192
193 /*
194 * VIA Apollo VP3 needs ETBF on BT848/878
195 */
196 static void __devinit quirk_viaetbf(struct pci_dev *dev)
197 {
198 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
199 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
200 pci_pci_problems |= PCIPCI_VIAETBF;
201 }
202 }
203 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
204
205 static void __devinit quirk_vsfx(struct pci_dev *dev)
206 {
207 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
208 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
209 pci_pci_problems |= PCIPCI_VSFX;
210 }
211 }
212 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
213
214 /*
215 * Ali Magik requires workarounds to be used by the drivers
216 * that DMA to AGP space. Latency must be set to 0xA and triton
217 * workaround applied too
218 * [Info kindly provided by ALi]
219 */
220 static void __init quirk_alimagik(struct pci_dev *dev)
221 {
222 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
223 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
224 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
225 }
226 }
227 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
228 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
229
230 /*
231 * Natoma has some interesting boundary conditions with Zoran stuff
232 * at least
233 */
234 static void __devinit quirk_natoma(struct pci_dev *dev)
235 {
236 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
237 dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
238 pci_pci_problems |= PCIPCI_NATOMA;
239 }
240 }
241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
242 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
243 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
247
248 /*
249 * This chip can cause PCI parity errors if config register 0xA0 is read
250 * while DMAs are occurring.
251 */
252 static void __devinit quirk_citrine(struct pci_dev *dev)
253 {
254 dev->cfg_size = 0xA0;
255 }
256 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
257
258 /*
259 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
260 * If it's needed, re-allocate the region.
261 */
262 static void __devinit quirk_s3_64M(struct pci_dev *dev)
263 {
264 struct resource *r = &dev->resource[0];
265
266 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
267 r->start = 0;
268 r->end = 0x3ffffff;
269 }
270 }
271 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
272 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
273
274 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
275 unsigned size, int nr, const char *name)
276 {
277 region &= ~(size-1);
278 if (region) {
279 struct pci_bus_region bus_region;
280 struct resource *res = dev->resource + nr;
281
282 res->name = pci_name(dev);
283 res->start = region;
284 res->end = region + size - 1;
285 res->flags = IORESOURCE_IO;
286
287 /* Convert from PCI bus to resource space. */
288 bus_region.start = res->start;
289 bus_region.end = res->end;
290 pcibios_bus_to_resource(dev, res, &bus_region);
291
292 pci_claim_resource(dev, nr);
293 dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
294 }
295 }
296
297 /*
298 * ATI Northbridge setups MCE the processor if you even
299 * read somewhere between 0x3b0->0x3bb or read 0x3d3
300 */
301 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
302 {
303 dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
304 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
305 request_region(0x3b0, 0x0C, "RadeonIGP");
306 request_region(0x3d3, 0x01, "RadeonIGP");
307 }
308 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
309
310 /*
311 * Let's make the southbridge information explicit instead
312 * of having to worry about people probing the ACPI areas,
313 * for example.. (Yes, it happens, and if you read the wrong
314 * ACPI register it will put the machine to sleep with no
315 * way of waking it up again. Bummer).
316 *
317 * ALI M7101: Two IO regions pointed to by words at
318 * 0xE0 (64 bytes of ACPI registers)
319 * 0xE2 (32 bytes of SMB registers)
320 */
321 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
322 {
323 u16 region;
324
325 pci_read_config_word(dev, 0xE0, &region);
326 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
327 pci_read_config_word(dev, 0xE2, &region);
328 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
329 }
330 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
331
332 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
333 {
334 u32 devres;
335 u32 mask, size, base;
336
337 pci_read_config_dword(dev, port, &devres);
338 if ((devres & enable) != enable)
339 return;
340 mask = (devres >> 16) & 15;
341 base = devres & 0xffff;
342 size = 16;
343 for (;;) {
344 unsigned bit = size >> 1;
345 if ((bit & mask) == bit)
346 break;
347 size = bit;
348 }
349 /*
350 * For now we only print it out. Eventually we'll want to
351 * reserve it (at least if it's in the 0x1000+ range), but
352 * let's get enough confirmation reports first.
353 */
354 base &= -size;
355 dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
356 }
357
358 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
359 {
360 u32 devres;
361 u32 mask, size, base;
362
363 pci_read_config_dword(dev, port, &devres);
364 if ((devres & enable) != enable)
365 return;
366 base = devres & 0xffff0000;
367 mask = (devres & 0x3f) << 16;
368 size = 128 << 16;
369 for (;;) {
370 unsigned bit = size >> 1;
371 if ((bit & mask) == bit)
372 break;
373 size = bit;
374 }
375 /*
376 * For now we only print it out. Eventually we'll want to
377 * reserve it, but let's get enough confirmation reports first.
378 */
379 base &= -size;
380 dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
381 }
382
383 /*
384 * PIIX4 ACPI: Two IO regions pointed to by longwords at
385 * 0x40 (64 bytes of ACPI registers)
386 * 0x90 (16 bytes of SMB registers)
387 * and a few strange programmable PIIX4 device resources.
388 */
389 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
390 {
391 u32 region, res_a;
392
393 pci_read_config_dword(dev, 0x40, &region);
394 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
395 pci_read_config_dword(dev, 0x90, &region);
396 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
397
398 /* Device resource A has enables for some of the other ones */
399 pci_read_config_dword(dev, 0x5c, &res_a);
400
401 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
402 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
403
404 /* Device resource D is just bitfields for static resources */
405
406 /* Device 12 enabled? */
407 if (res_a & (1 << 29)) {
408 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
409 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
410 }
411 /* Device 13 enabled? */
412 if (res_a & (1 << 30)) {
413 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
414 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
415 }
416 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
417 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
418 }
419 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
420 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
421
422 /*
423 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
424 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
425 * 0x58 (64 bytes of GPIO I/O space)
426 */
427 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
428 {
429 u32 region;
430
431 pci_read_config_dword(dev, 0x40, &region);
432 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
433
434 pci_read_config_dword(dev, 0x58, &region);
435 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
436 }
437 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
438 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
439 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
440 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
443 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
444 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
445 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
447
448 static void __devinit quirk_ich6_lpc_acpi(struct pci_dev *dev)
449 {
450 u32 region;
451
452 pci_read_config_dword(dev, 0x40, &region);
453 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
454
455 pci_read_config_dword(dev, 0x48, &region);
456 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
457 }
458 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc_acpi);
459 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc_acpi);
460 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich6_lpc_acpi);
461 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich6_lpc_acpi);
462 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich6_lpc_acpi);
463 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich6_lpc_acpi);
464 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich6_lpc_acpi);
465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich6_lpc_acpi);
466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich6_lpc_acpi);
467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich6_lpc_acpi);
468 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich6_lpc_acpi);
469 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich6_lpc_acpi);
470 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich6_lpc_acpi);
471 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich6_lpc_acpi);
472
473 /*
474 * VIA ACPI: One IO region pointed to by longword at
475 * 0x48 or 0x20 (256 bytes of ACPI registers)
476 */
477 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
478 {
479 u32 region;
480
481 if (dev->revision & 0x10) {
482 pci_read_config_dword(dev, 0x48, &region);
483 region &= PCI_BASE_ADDRESS_IO_MASK;
484 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
485 }
486 }
487 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
488
489 /*
490 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
491 * 0x48 (256 bytes of ACPI registers)
492 * 0x70 (128 bytes of hardware monitoring register)
493 * 0x90 (16 bytes of SMB registers)
494 */
495 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
496 {
497 u16 hm;
498 u32 smb;
499
500 quirk_vt82c586_acpi(dev);
501
502 pci_read_config_word(dev, 0x70, &hm);
503 hm &= PCI_BASE_ADDRESS_IO_MASK;
504 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
505
506 pci_read_config_dword(dev, 0x90, &smb);
507 smb &= PCI_BASE_ADDRESS_IO_MASK;
508 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
509 }
510 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
511
512 /*
513 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
514 * 0x88 (128 bytes of power management registers)
515 * 0xd0 (16 bytes of SMB registers)
516 */
517 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
518 {
519 u16 pm, smb;
520
521 pci_read_config_word(dev, 0x88, &pm);
522 pm &= PCI_BASE_ADDRESS_IO_MASK;
523 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
524
525 pci_read_config_word(dev, 0xd0, &smb);
526 smb &= PCI_BASE_ADDRESS_IO_MASK;
527 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
528 }
529 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
530
531
532 #ifdef CONFIG_X86_IO_APIC
533
534 #include <asm/io_apic.h>
535
536 /*
537 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
538 * devices to the external APIC.
539 *
540 * TODO: When we have device-specific interrupt routers,
541 * this code will go away from quirks.
542 */
543 static void quirk_via_ioapic(struct pci_dev *dev)
544 {
545 u8 tmp;
546
547 if (nr_ioapics < 1)
548 tmp = 0; /* nothing routed to external APIC */
549 else
550 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
551
552 dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
553 tmp == 0 ? "Disa" : "Ena");
554
555 /* Offset 0x58: External APIC IRQ output control */
556 pci_write_config_byte (dev, 0x58, tmp);
557 }
558 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
559 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
560
561 /*
562 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
563 * This leads to doubled level interrupt rates.
564 * Set this bit to get rid of cycle wastage.
565 * Otherwise uncritical.
566 */
567 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
568 {
569 u8 misc_control2;
570 #define BYPASS_APIC_DEASSERT 8
571
572 pci_read_config_byte(dev, 0x5B, &misc_control2);
573 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
574 dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
575 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
576 }
577 }
578 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
579 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
580
581 /*
582 * The AMD io apic can hang the box when an apic irq is masked.
583 * We check all revs >= B0 (yet not in the pre production!) as the bug
584 * is currently marked NoFix
585 *
586 * We have multiple reports of hangs with this chipset that went away with
587 * noapic specified. For the moment we assume it's the erratum. We may be wrong
588 * of course. However the advice is demonstrably good even if so..
589 */
590 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
591 {
592 if (dev->revision >= 0x02) {
593 dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
594 dev_warn(&dev->dev, " : booting with the \"noapic\" option\n");
595 }
596 }
597 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
598
599 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
600 {
601 if (dev->devfn == 0 && dev->bus->number == 0)
602 sis_apic_bug = 1;
603 }
604 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw);
605
606 #define AMD8131_revA0 0x01
607 #define AMD8131_revB0 0x11
608 #define AMD8131_MISC 0x40
609 #define AMD8131_NIOAMODE_BIT 0
610 static void quirk_amd_8131_ioapic(struct pci_dev *dev)
611 {
612 unsigned char tmp;
613
614 if (nr_ioapics == 0)
615 return;
616
617 if (dev->revision == AMD8131_revA0 || dev->revision == AMD8131_revB0) {
618 dev_info(&dev->dev, "Fixing up AMD8131 IOAPIC mode\n");
619 pci_read_config_byte( dev, AMD8131_MISC, &tmp);
620 tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
621 pci_write_config_byte( dev, AMD8131_MISC, tmp);
622 }
623 }
624 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
625 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
626 #endif /* CONFIG_X86_IO_APIC */
627
628 /*
629 * Some settings of MMRBC can lead to data corruption so block changes.
630 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
631 */
632 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
633 {
634 if (dev->subordinate && dev->revision <= 0x12) {
635 dev_info(&dev->dev, "AMD8131 rev %x detected; "
636 "disabling PCI-X MMRBC\n", dev->revision);
637 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
638 }
639 }
640 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
641
642 /*
643 * FIXME: it is questionable that quirk_via_acpi
644 * is needed. It shows up as an ISA bridge, and does not
645 * support the PCI_INTERRUPT_LINE register at all. Therefore
646 * it seems like setting the pci_dev's 'irq' to the
647 * value of the ACPI SCI interrupt is only done for convenience.
648 * -jgarzik
649 */
650 static void __devinit quirk_via_acpi(struct pci_dev *d)
651 {
652 /*
653 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
654 */
655 u8 irq;
656 pci_read_config_byte(d, 0x42, &irq);
657 irq &= 0xf;
658 if (irq && (irq != 2))
659 d->irq = irq;
660 }
661 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
662 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
663
664
665 /*
666 * VIA bridges which have VLink
667 */
668
669 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
670
671 static void quirk_via_bridge(struct pci_dev *dev)
672 {
673 /* See what bridge we have and find the device ranges */
674 switch (dev->device) {
675 case PCI_DEVICE_ID_VIA_82C686:
676 /* The VT82C686 is special, it attaches to PCI and can have
677 any device number. All its subdevices are functions of
678 that single device. */
679 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
680 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
681 break;
682 case PCI_DEVICE_ID_VIA_8237:
683 case PCI_DEVICE_ID_VIA_8237A:
684 via_vlink_dev_lo = 15;
685 break;
686 case PCI_DEVICE_ID_VIA_8235:
687 via_vlink_dev_lo = 16;
688 break;
689 case PCI_DEVICE_ID_VIA_8231:
690 case PCI_DEVICE_ID_VIA_8233_0:
691 case PCI_DEVICE_ID_VIA_8233A:
692 case PCI_DEVICE_ID_VIA_8233C_0:
693 via_vlink_dev_lo = 17;
694 break;
695 }
696 }
697 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
698 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
699 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
700 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
701 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
702 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
704 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
705
706 /**
707 * quirk_via_vlink - VIA VLink IRQ number update
708 * @dev: PCI device
709 *
710 * If the device we are dealing with is on a PIC IRQ we need to
711 * ensure that the IRQ line register which usually is not relevant
712 * for PCI cards, is actually written so that interrupts get sent
713 * to the right place.
714 * We only do this on systems where a VIA south bridge was detected,
715 * and only for VIA devices on the motherboard (see quirk_via_bridge
716 * above).
717 */
718
719 static void quirk_via_vlink(struct pci_dev *dev)
720 {
721 u8 irq, new_irq;
722
723 /* Check if we have VLink at all */
724 if (via_vlink_dev_lo == -1)
725 return;
726
727 new_irq = dev->irq;
728
729 /* Don't quirk interrupts outside the legacy IRQ range */
730 if (!new_irq || new_irq > 15)
731 return;
732
733 /* Internal device ? */
734 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
735 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
736 return;
737
738 /* This is an internal VLink device on a PIC interrupt. The BIOS
739 ought to have set this but may not have, so we redo it */
740
741 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
742 if (new_irq != irq) {
743 dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
744 irq, new_irq);
745 udelay(15); /* unknown if delay really needed */
746 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
747 }
748 }
749 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
750
751 /*
752 * VIA VT82C598 has its device ID settable and many BIOSes
753 * set it to the ID of VT82C597 for backward compatibility.
754 * We need to switch it off to be able to recognize the real
755 * type of the chip.
756 */
757 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
758 {
759 pci_write_config_byte(dev, 0xfc, 0);
760 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
761 }
762 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
763
764 /*
765 * CardBus controllers have a legacy base address that enables them
766 * to respond as i82365 pcmcia controllers. We don't want them to
767 * do this even if the Linux CardBus driver is not loaded, because
768 * the Linux i82365 driver does not (and should not) handle CardBus.
769 */
770 static void quirk_cardbus_legacy(struct pci_dev *dev)
771 {
772 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
773 return;
774 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
775 }
776 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
777 DECLARE_PCI_FIXUP_RESUME(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
778
779 /*
780 * Following the PCI ordering rules is optional on the AMD762. I'm not
781 * sure what the designers were smoking but let's not inhale...
782 *
783 * To be fair to AMD, it follows the spec by default, its BIOS people
784 * who turn it off!
785 */
786 static void quirk_amd_ordering(struct pci_dev *dev)
787 {
788 u32 pcic;
789 pci_read_config_dword(dev, 0x4C, &pcic);
790 if ((pcic&6)!=6) {
791 pcic |= 6;
792 dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
793 pci_write_config_dword(dev, 0x4C, pcic);
794 pci_read_config_dword(dev, 0x84, &pcic);
795 pcic |= (1<<23); /* Required in this mode */
796 pci_write_config_dword(dev, 0x84, pcic);
797 }
798 }
799 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
800 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
801
802 /*
803 * DreamWorks provided workaround for Dunord I-3000 problem
804 *
805 * This card decodes and responds to addresses not apparently
806 * assigned to it. We force a larger allocation to ensure that
807 * nothing gets put too close to it.
808 */
809 static void __devinit quirk_dunord ( struct pci_dev * dev )
810 {
811 struct resource *r = &dev->resource [1];
812 r->start = 0;
813 r->end = 0xffffff;
814 }
815 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
816
817 /*
818 * i82380FB mobile docking controller: its PCI-to-PCI bridge
819 * is subtractive decoding (transparent), and does indicate this
820 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
821 * instead of 0x01.
822 */
823 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
824 {
825 dev->transparent = 1;
826 }
827 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
828 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
829
830 /*
831 * Common misconfiguration of the MediaGX/Geode PCI master that will
832 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
833 * datasheets found at http://www.national.com/ds/GX for info on what
834 * these bits do. <christer@weinigel.se>
835 */
836 static void quirk_mediagx_master(struct pci_dev *dev)
837 {
838 u8 reg;
839 pci_read_config_byte(dev, 0x41, &reg);
840 if (reg & 2) {
841 reg &= ~2;
842 dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
843 pci_write_config_byte(dev, 0x41, reg);
844 }
845 }
846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
847 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
848
849 /*
850 * Ensure C0 rev restreaming is off. This is normally done by
851 * the BIOS but in the odd case it is not the results are corruption
852 * hence the presence of a Linux check
853 */
854 static void quirk_disable_pxb(struct pci_dev *pdev)
855 {
856 u16 config;
857
858 if (pdev->revision != 0x04) /* Only C0 requires this */
859 return;
860 pci_read_config_word(pdev, 0x40, &config);
861 if (config & (1<<6)) {
862 config &= ~(1<<6);
863 pci_write_config_word(pdev, 0x40, config);
864 dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
865 }
866 }
867 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
868 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
869
870 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
871 {
872 /* set sb600/sb700/sb800 sata to ahci mode */
873 u8 tmp;
874
875 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
876 if (tmp == 0x01) {
877 pci_read_config_byte(pdev, 0x40, &tmp);
878 pci_write_config_byte(pdev, 0x40, tmp|1);
879 pci_write_config_byte(pdev, 0x9, 1);
880 pci_write_config_byte(pdev, 0xa, 6);
881 pci_write_config_byte(pdev, 0x40, tmp);
882
883 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
884 dev_info(&pdev->dev, "set SATA to AHCI mode\n");
885 }
886 }
887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
888 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
889 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
890 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
891
892 /*
893 * Serverworks CSB5 IDE does not fully support native mode
894 */
895 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
896 {
897 u8 prog;
898 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
899 if (prog & 5) {
900 prog &= ~5;
901 pdev->class &= ~5;
902 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
903 /* PCI layer will sort out resources */
904 }
905 }
906 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
907
908 /*
909 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
910 */
911 static void __init quirk_ide_samemode(struct pci_dev *pdev)
912 {
913 u8 prog;
914
915 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
916
917 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
918 dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
919 prog &= ~5;
920 pdev->class &= ~5;
921 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
922 }
923 }
924 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
925
926 /* This was originally an Alpha specific thing, but it really fits here.
927 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
928 */
929 static void __init quirk_eisa_bridge(struct pci_dev *dev)
930 {
931 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
932 }
933 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
934
935
936 /*
937 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
938 * is not activated. The myth is that Asus said that they do not want the
939 * users to be irritated by just another PCI Device in the Win98 device
940 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
941 * package 2.7.0 for details)
942 *
943 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
944 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
945 * becomes necessary to do this tweak in two steps -- the chosen trigger
946 * is either the Host bridge (preferred) or on-board VGA controller.
947 *
948 * Note that we used to unhide the SMBus that way on Toshiba laptops
949 * (Satellite A40 and Tecra M2) but then found that the thermal management
950 * was done by SMM code, which could cause unsynchronized concurrent
951 * accesses to the SMBus registers, with potentially bad effects. Thus you
952 * should be very careful when adding new entries: if SMM is accessing the
953 * Intel SMBus, this is a very good reason to leave it hidden.
954 *
955 * Likewise, many recent laptops use ACPI for thermal management. If the
956 * ACPI DSDT code accesses the SMBus, then Linux should not access it
957 * natively, and keeping the SMBus hidden is the right thing to do. If you
958 * are about to add an entry in the table below, please first disassemble
959 * the DSDT and double-check that there is no code accessing the SMBus.
960 */
961 static int asus_hides_smbus;
962
963 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
964 {
965 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
966 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
967 switch(dev->subsystem_device) {
968 case 0x8025: /* P4B-LX */
969 case 0x8070: /* P4B */
970 case 0x8088: /* P4B533 */
971 case 0x1626: /* L3C notebook */
972 asus_hides_smbus = 1;
973 }
974 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
975 switch(dev->subsystem_device) {
976 case 0x80b1: /* P4GE-V */
977 case 0x80b2: /* P4PE */
978 case 0x8093: /* P4B533-V */
979 asus_hides_smbus = 1;
980 }
981 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
982 switch(dev->subsystem_device) {
983 case 0x8030: /* P4T533 */
984 asus_hides_smbus = 1;
985 }
986 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
987 switch (dev->subsystem_device) {
988 case 0x8070: /* P4G8X Deluxe */
989 asus_hides_smbus = 1;
990 }
991 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
992 switch (dev->subsystem_device) {
993 case 0x80c9: /* PU-DLS */
994 asus_hides_smbus = 1;
995 }
996 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
997 switch (dev->subsystem_device) {
998 case 0x1751: /* M2N notebook */
999 case 0x1821: /* M5N notebook */
1000 asus_hides_smbus = 1;
1001 }
1002 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1003 switch (dev->subsystem_device) {
1004 case 0x184b: /* W1N notebook */
1005 case 0x186a: /* M6Ne notebook */
1006 asus_hides_smbus = 1;
1007 }
1008 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1009 switch (dev->subsystem_device) {
1010 case 0x80f2: /* P4P800-X */
1011 asus_hides_smbus = 1;
1012 }
1013 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1014 switch (dev->subsystem_device) {
1015 case 0x1882: /* M6V notebook */
1016 case 0x1977: /* A6VA notebook */
1017 asus_hides_smbus = 1;
1018 }
1019 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1020 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1021 switch(dev->subsystem_device) {
1022 case 0x088C: /* HP Compaq nc8000 */
1023 case 0x0890: /* HP Compaq nc6000 */
1024 asus_hides_smbus = 1;
1025 }
1026 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1027 switch (dev->subsystem_device) {
1028 case 0x12bc: /* HP D330L */
1029 case 0x12bd: /* HP D530 */
1030 asus_hides_smbus = 1;
1031 }
1032 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1033 switch (dev->subsystem_device) {
1034 case 0x12bf: /* HP xw4100 */
1035 asus_hides_smbus = 1;
1036 }
1037 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1038 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1039 switch(dev->subsystem_device) {
1040 case 0xC00C: /* Samsung P35 notebook */
1041 asus_hides_smbus = 1;
1042 }
1043 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1044 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1045 switch(dev->subsystem_device) {
1046 case 0x0058: /* Compaq Evo N620c */
1047 asus_hides_smbus = 1;
1048 }
1049 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1050 switch(dev->subsystem_device) {
1051 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1052 /* Motherboard doesn't have Host bridge
1053 * subvendor/subdevice IDs, therefore checking
1054 * its on-board VGA controller */
1055 asus_hides_smbus = 1;
1056 }
1057 }
1058 }
1059 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1060 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1061 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1062 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1063 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1064 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1065 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1066 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1067 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1068 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1069
1070 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1071
1072 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1073 {
1074 u16 val;
1075
1076 if (likely(!asus_hides_smbus))
1077 return;
1078
1079 pci_read_config_word(dev, 0xF2, &val);
1080 if (val & 0x8) {
1081 pci_write_config_word(dev, 0xF2, val & (~0x8));
1082 pci_read_config_word(dev, 0xF2, &val);
1083 if (val & 0x8)
1084 dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1085 else
1086 dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1087 }
1088 }
1089 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1090 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1091 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1092 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1093 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1094 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1095 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1096 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1097 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1098 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1099 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1100 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1101 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1102 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1103
1104 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1105 {
1106 u32 val, rcba;
1107 void __iomem *base;
1108
1109 if (likely(!asus_hides_smbus))
1110 return;
1111 pci_read_config_dword(dev, 0xF0, &rcba);
1112 base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); /* use bits 31:14, 16 kB aligned */
1113 if (base == NULL) return;
1114 val=readl(base + 0x3418); /* read the Function Disable register, dword mode only */
1115 writel(val & 0xFFFFFFF7, base + 0x3418); /* enable the SMBus device */
1116 iounmap(base);
1117 dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1118 }
1119 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1120 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1121
1122 /*
1123 * SiS 96x south bridge: BIOS typically hides SMBus device...
1124 */
1125 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1126 {
1127 u8 val = 0;
1128 pci_read_config_byte(dev, 0x77, &val);
1129 if (val & 0x10) {
1130 dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1131 pci_write_config_byte(dev, 0x77, val & ~0x10);
1132 }
1133 }
1134 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1135 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1136 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1137 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1138 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1139 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1140 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1141 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1142
1143 /*
1144 * ... This is further complicated by the fact that some SiS96x south
1145 * bridges pretend to be 85C503/5513 instead. In that case see if we
1146 * spotted a compatible north bridge to make sure.
1147 * (pci_find_device doesn't work yet)
1148 *
1149 * We can also enable the sis96x bit in the discovery register..
1150 */
1151 #define SIS_DETECT_REGISTER 0x40
1152
1153 static void quirk_sis_503(struct pci_dev *dev)
1154 {
1155 u8 reg;
1156 u16 devid;
1157
1158 pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1159 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1160 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1161 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1162 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1163 return;
1164 }
1165
1166 /*
1167 * Ok, it now shows up as a 96x.. run the 96x quirk by
1168 * hand in case it has already been processed.
1169 * (depends on link order, which is apparently not guaranteed)
1170 */
1171 dev->device = devid;
1172 quirk_sis_96x_smbus(dev);
1173 }
1174 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1175 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1176
1177
1178 /*
1179 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1180 * and MC97 modem controller are disabled when a second PCI soundcard is
1181 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1182 * -- bjd
1183 */
1184 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1185 {
1186 u8 val;
1187 int asus_hides_ac97 = 0;
1188
1189 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1190 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1191 asus_hides_ac97 = 1;
1192 }
1193
1194 if (!asus_hides_ac97)
1195 return;
1196
1197 pci_read_config_byte(dev, 0x50, &val);
1198 if (val & 0xc0) {
1199 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1200 pci_read_config_byte(dev, 0x50, &val);
1201 if (val & 0xc0)
1202 dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1203 else
1204 dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1205 }
1206 }
1207 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1208 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1209
1210 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1211
1212 /*
1213 * If we are using libata we can drive this chip properly but must
1214 * do this early on to make the additional device appear during
1215 * the PCI scanning.
1216 */
1217 static void quirk_jmicron_ata(struct pci_dev *pdev)
1218 {
1219 u32 conf1, conf5, class;
1220 u8 hdr;
1221
1222 /* Only poke fn 0 */
1223 if (PCI_FUNC(pdev->devfn))
1224 return;
1225
1226 pci_read_config_dword(pdev, 0x40, &conf1);
1227 pci_read_config_dword(pdev, 0x80, &conf5);
1228
1229 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1230 conf5 &= ~(1 << 24); /* Clear bit 24 */
1231
1232 switch (pdev->device) {
1233 case PCI_DEVICE_ID_JMICRON_JMB360:
1234 /* The controller should be in single function ahci mode */
1235 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1236 break;
1237
1238 case PCI_DEVICE_ID_JMICRON_JMB365:
1239 case PCI_DEVICE_ID_JMICRON_JMB366:
1240 /* Redirect IDE second PATA port to the right spot */
1241 conf5 |= (1 << 24);
1242 /* Fall through */
1243 case PCI_DEVICE_ID_JMICRON_JMB361:
1244 case PCI_DEVICE_ID_JMICRON_JMB363:
1245 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1246 /* Set the class codes correctly and then direct IDE 0 */
1247 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1248 break;
1249
1250 case PCI_DEVICE_ID_JMICRON_JMB368:
1251 /* The controller should be in single function IDE mode */
1252 conf1 |= 0x00C00000; /* Set 22, 23 */
1253 break;
1254 }
1255
1256 pci_write_config_dword(pdev, 0x40, conf1);
1257 pci_write_config_dword(pdev, 0x80, conf5);
1258
1259 /* Update pdev accordingly */
1260 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1261 pdev->hdr_type = hdr & 0x7f;
1262 pdev->multifunction = !!(hdr & 0x80);
1263
1264 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1265 pdev->class = class >> 8;
1266 }
1267 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1268 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1269 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1270 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1271 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1272 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1273 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1274 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1275 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1276 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1277 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1278 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1279
1280 #endif
1281
1282 #ifdef CONFIG_X86_IO_APIC
1283 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1284 {
1285 int i;
1286
1287 if ((pdev->class >> 8) != 0xff00)
1288 return;
1289
1290 /* the first BAR is the location of the IO APIC...we must
1291 * not touch this (and it's already covered by the fixmap), so
1292 * forcibly insert it into the resource tree */
1293 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1294 insert_resource(&iomem_resource, &pdev->resource[0]);
1295
1296 /* The next five BARs all seem to be rubbish, so just clean
1297 * them out */
1298 for (i=1; i < 6; i++) {
1299 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1300 }
1301
1302 }
1303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1304 #endif
1305
1306 int pcie_mch_quirk;
1307 EXPORT_SYMBOL(pcie_mch_quirk);
1308
1309 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1310 {
1311 pcie_mch_quirk = 1;
1312 }
1313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1314 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1315 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1316
1317
1318 /*
1319 * It's possible for the MSI to get corrupted if shpc and acpi
1320 * are used together on certain PXH-based systems.
1321 */
1322 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1323 {
1324 pci_msi_off(dev);
1325 dev->no_msi = 1;
1326 dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1327 }
1328 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1329 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1330 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1331 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1332 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1333
1334 /*
1335 * Some Intel PCI Express chipsets have trouble with downstream
1336 * device power management.
1337 */
1338 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1339 {
1340 pci_pm_d3_delay = 120;
1341 dev->no_d1d2 = 1;
1342 }
1343
1344 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1345 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1346 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1347 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1348 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1349 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1350 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1351 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1352 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1353 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1354 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1355 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1356 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1357 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1358 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1359 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1360 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1361 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1362 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1363 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1364 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1365
1366 /*
1367 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1368 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1369 * Re-allocate the region if needed...
1370 */
1371 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1372 {
1373 struct resource *r = &dev->resource[0];
1374
1375 if (r->start & 0x8) {
1376 r->start = 0;
1377 r->end = 0xf;
1378 }
1379 }
1380 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1381 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1382 quirk_tc86c001_ide);
1383
1384 static void __devinit quirk_netmos(struct pci_dev *dev)
1385 {
1386 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1387 unsigned int num_serial = dev->subsystem_device & 0xf;
1388
1389 /*
1390 * These Netmos parts are multiport serial devices with optional
1391 * parallel ports. Even when parallel ports are present, they
1392 * are identified as class SERIAL, which means the serial driver
1393 * will claim them. To prevent this, mark them as class OTHER.
1394 * These combo devices should be claimed by parport_serial.
1395 *
1396 * The subdevice ID is of the form 0x00PS, where <P> is the number
1397 * of parallel ports and <S> is the number of serial ports.
1398 */
1399 switch (dev->device) {
1400 case PCI_DEVICE_ID_NETMOS_9735:
1401 case PCI_DEVICE_ID_NETMOS_9745:
1402 case PCI_DEVICE_ID_NETMOS_9835:
1403 case PCI_DEVICE_ID_NETMOS_9845:
1404 case PCI_DEVICE_ID_NETMOS_9855:
1405 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1406 num_parallel) {
1407 dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1408 "%u serial); changing class SERIAL to OTHER "
1409 "(use parport_serial)\n",
1410 dev->device, num_parallel, num_serial);
1411 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1412 (dev->class & 0xff);
1413 }
1414 }
1415 }
1416 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1417
1418 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1419 {
1420 u16 command, pmcsr;
1421 u8 __iomem *csr;
1422 u8 cmd_hi;
1423 int pm;
1424
1425 switch (dev->device) {
1426 /* PCI IDs taken from drivers/net/e100.c */
1427 case 0x1029:
1428 case 0x1030 ... 0x1034:
1429 case 0x1038 ... 0x103E:
1430 case 0x1050 ... 0x1057:
1431 case 0x1059:
1432 case 0x1064 ... 0x106B:
1433 case 0x1091 ... 0x1095:
1434 case 0x1209:
1435 case 0x1229:
1436 case 0x2449:
1437 case 0x2459:
1438 case 0x245D:
1439 case 0x27DC:
1440 break;
1441 default:
1442 return;
1443 }
1444
1445 /*
1446 * Some firmware hands off the e100 with interrupts enabled,
1447 * which can cause a flood of interrupts if packets are
1448 * received before the driver attaches to the device. So
1449 * disable all e100 interrupts here. The driver will
1450 * re-enable them when it's ready.
1451 */
1452 pci_read_config_word(dev, PCI_COMMAND, &command);
1453
1454 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1455 return;
1456
1457 /*
1458 * Check that the device is in the D0 power state. If it's not,
1459 * there is no point to look any further.
1460 */
1461 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1462 if (pm) {
1463 pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1464 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1465 return;
1466 }
1467
1468 /* Convert from PCI bus to resource space. */
1469 csr = ioremap(pci_resource_start(dev, 0), 8);
1470 if (!csr) {
1471 dev_warn(&dev->dev, "Can't map e100 registers\n");
1472 return;
1473 }
1474
1475 cmd_hi = readb(csr + 3);
1476 if (cmd_hi == 0) {
1477 dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1478 "disabling\n");
1479 writeb(1, csr + 3);
1480 }
1481
1482 iounmap(csr);
1483 }
1484 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1485
1486 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1487 {
1488 /* rev 1 ncr53c810 chips don't set the class at all which means
1489 * they don't get their resources remapped. Fix that here.
1490 */
1491
1492 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1493 dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1494 dev->class = PCI_CLASS_STORAGE_SCSI;
1495 }
1496 }
1497 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1498
1499 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
1500 {
1501 while (f < end) {
1502 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
1503 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
1504 #ifdef DEBUG
1505 dev_dbg(&dev->dev, "calling quirk 0x%p", f->hook);
1506 print_fn_descriptor_symbol(": %s()\n",
1507 (unsigned long) f->hook);
1508 #endif
1509 f->hook(dev);
1510 }
1511 f++;
1512 }
1513 }
1514
1515 extern struct pci_fixup __start_pci_fixups_early[];
1516 extern struct pci_fixup __end_pci_fixups_early[];
1517 extern struct pci_fixup __start_pci_fixups_header[];
1518 extern struct pci_fixup __end_pci_fixups_header[];
1519 extern struct pci_fixup __start_pci_fixups_final[];
1520 extern struct pci_fixup __end_pci_fixups_final[];
1521 extern struct pci_fixup __start_pci_fixups_enable[];
1522 extern struct pci_fixup __end_pci_fixups_enable[];
1523 extern struct pci_fixup __start_pci_fixups_resume[];
1524 extern struct pci_fixup __end_pci_fixups_resume[];
1525
1526
1527 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
1528 {
1529 struct pci_fixup *start, *end;
1530
1531 switch(pass) {
1532 case pci_fixup_early:
1533 start = __start_pci_fixups_early;
1534 end = __end_pci_fixups_early;
1535 break;
1536
1537 case pci_fixup_header:
1538 start = __start_pci_fixups_header;
1539 end = __end_pci_fixups_header;
1540 break;
1541
1542 case pci_fixup_final:
1543 start = __start_pci_fixups_final;
1544 end = __end_pci_fixups_final;
1545 break;
1546
1547 case pci_fixup_enable:
1548 start = __start_pci_fixups_enable;
1549 end = __end_pci_fixups_enable;
1550 break;
1551
1552 case pci_fixup_resume:
1553 start = __start_pci_fixups_resume;
1554 end = __end_pci_fixups_resume;
1555 break;
1556
1557 default:
1558 /* stupid compiler warning, you would think with an enum... */
1559 return;
1560 }
1561 pci_do_fixups(dev, start, end);
1562 }
1563 EXPORT_SYMBOL(pci_fixup_device);
1564
1565 /* Enable 1k I/O space granularity on the Intel P64H2 */
1566 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1567 {
1568 u16 en1k;
1569 u8 io_base_lo, io_limit_lo;
1570 unsigned long base, limit;
1571 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1572
1573 pci_read_config_word(dev, 0x40, &en1k);
1574
1575 if (en1k & 0x200) {
1576 dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1577
1578 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1579 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1580 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1581 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1582
1583 if (base <= limit) {
1584 res->start = base;
1585 res->end = limit + 0x3ff;
1586 }
1587 }
1588 }
1589 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1590
1591 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1592 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1593 * in drivers/pci/setup-bus.c
1594 */
1595 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1596 {
1597 u16 en1k, iobl_adr, iobl_adr_1k;
1598 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1599
1600 pci_read_config_word(dev, 0x40, &en1k);
1601
1602 if (en1k & 0x200) {
1603 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1604
1605 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1606
1607 if (iobl_adr != iobl_adr_1k) {
1608 dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
1609 iobl_adr,iobl_adr_1k);
1610 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1611 }
1612 }
1613 }
1614 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1615
1616 /* Under some circumstances, AER is not linked with extended capabilities.
1617 * Force it to be linked by setting the corresponding control bit in the
1618 * config space.
1619 */
1620 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1621 {
1622 uint8_t b;
1623 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1624 if (!(b & 0x20)) {
1625 pci_write_config_byte(dev, 0xf41, b | 0x20);
1626 dev_info(&dev->dev,
1627 "Linking AER extended capability\n");
1628 }
1629 }
1630 }
1631 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1632 quirk_nvidia_ck804_pcie_aer_ext_cap);
1633 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1634 quirk_nvidia_ck804_pcie_aer_ext_cap);
1635
1636 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1637 {
1638 /*
1639 * Disable PCI Bus Parking and PCI Master read caching on CX700
1640 * which causes unspecified timing errors with a VT6212L on the PCI
1641 * bus leading to USB2.0 packet loss. The defaults are that these
1642 * features are turned off but some BIOSes turn them on.
1643 */
1644
1645 uint8_t b;
1646 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1647 if (b & 0x40) {
1648 /* Turn off PCI Bus Parking */
1649 pci_write_config_byte(dev, 0x76, b ^ 0x40);
1650
1651 /* Turn off PCI Master read caching */
1652 pci_write_config_byte(dev, 0x72, 0x0);
1653 pci_write_config_byte(dev, 0x75, 0x1);
1654 pci_write_config_byte(dev, 0x77, 0x0);
1655
1656 dev_info(&dev->dev,
1657 "Disabling VIA CX700 PCI parking/caching\n");
1658 }
1659 }
1660 }
1661 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1662
1663 #ifdef CONFIG_PCI_MSI
1664 /* Some chipsets do not support MSI. We cannot easily rely on setting
1665 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
1666 * some other busses controlled by the chipset even if Linux is not
1667 * aware of it. Instead of setting the flag on all busses in the
1668 * machine, simply disable MSI globally.
1669 */
1670 static void __init quirk_disable_all_msi(struct pci_dev *dev)
1671 {
1672 pci_no_msi();
1673 dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
1674 }
1675 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
1676 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
1677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
1678 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
1679
1680 /* Disable MSI on chipsets that are known to not support it */
1681 static void __devinit quirk_disable_msi(struct pci_dev *dev)
1682 {
1683 if (dev->subordinate) {
1684 dev_warn(&dev->dev, "MSI quirk detected; "
1685 "subordinate MSI disabled\n");
1686 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1687 }
1688 }
1689 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
1690
1691 /* Go through the list of Hypertransport capabilities and
1692 * return 1 if a HT MSI capability is found and enabled */
1693 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
1694 {
1695 int pos, ttl = 48;
1696
1697 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1698 while (pos && ttl--) {
1699 u8 flags;
1700
1701 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1702 &flags) == 0)
1703 {
1704 dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
1705 flags & HT_MSI_FLAGS_ENABLE ?
1706 "enabled" : "disabled");
1707 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
1708 }
1709
1710 pos = pci_find_next_ht_capability(dev, pos,
1711 HT_CAPTYPE_MSI_MAPPING);
1712 }
1713 return 0;
1714 }
1715
1716 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
1717 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
1718 {
1719 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
1720 dev_warn(&dev->dev, "MSI quirk detected; "
1721 "subordinate MSI disabled\n");
1722 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1723 }
1724 }
1725 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
1726 quirk_msi_ht_cap);
1727
1728
1729 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
1730 * MSI are supported if the MSI capability set in any of these mappings.
1731 */
1732 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
1733 {
1734 struct pci_dev *pdev;
1735
1736 if (!dev->subordinate)
1737 return;
1738
1739 /* check HT MSI cap on this chipset and the root one.
1740 * a single one having MSI is enough to be sure that MSI are supported.
1741 */
1742 pdev = pci_get_slot(dev->bus, 0);
1743 if (!pdev)
1744 return;
1745 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
1746 dev_warn(&dev->dev, "MSI quirk detected; "
1747 "subordinate MSI disabled\n");
1748 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1749 }
1750 pci_dev_put(pdev);
1751 }
1752 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1753 quirk_nvidia_ck804_msi_ht_cap);
1754
1755 /* Force enable MSI mapping capability on HT bridges */
1756 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
1757 {
1758 int pos, ttl = 48;
1759
1760 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1761 while (pos && ttl--) {
1762 u8 flags;
1763
1764 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1765 &flags) == 0) {
1766 dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
1767
1768 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
1769 flags | HT_MSI_FLAGS_ENABLE);
1770 }
1771 pos = pci_find_next_ht_capability(dev, pos,
1772 HT_CAPTYPE_MSI_MAPPING);
1773 }
1774 }
1775 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
1776 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
1777 ht_enable_msi_mapping);
1778
1779 static void __devinit nv_msi_ht_cap_quirk(struct pci_dev *dev)
1780 {
1781 struct pci_dev *host_bridge;
1782 int pos, ttl = 48;
1783
1784 /*
1785 * HT MSI mapping should be disabled on devices that are below
1786 * a non-Hypertransport host bridge. Locate the host bridge...
1787 */
1788 host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
1789 if (host_bridge == NULL) {
1790 dev_warn(&dev->dev,
1791 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
1792 return;
1793 }
1794
1795 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
1796 if (pos != 0) {
1797 /* Host bridge is to HT */
1798 ht_enable_msi_mapping(dev);
1799 return;
1800 }
1801
1802 /* Host bridge is not to HT, disable HT MSI mapping on this device */
1803 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1804 while (pos && ttl--) {
1805 u8 flags;
1806
1807 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1808 &flags) == 0) {
1809 dev_info(&dev->dev, "Disabling HT MSI mapping");
1810 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
1811 flags & ~HT_MSI_FLAGS_ENABLE);
1812 }
1813 pos = pci_find_next_ht_capability(dev, pos,
1814 HT_CAPTYPE_MSI_MAPPING);
1815 }
1816 }
1817 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk);
1818
1819 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
1820 {
1821 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
1822 }
1823 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
1824 {
1825 struct pci_dev *p;
1826
1827 /* SB700 MSI issue will be fixed at HW level from revision A21,
1828 * we need check PCI REVISION ID of SMBus controller to get SB700
1829 * revision.
1830 */
1831 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1832 NULL);
1833 if (!p)
1834 return;
1835
1836 if ((p->revision < 0x3B) && (p->revision >= 0x30))
1837 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
1838 pci_dev_put(p);
1839 }
1840 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1841 PCI_DEVICE_ID_TIGON3_5780,
1842 quirk_msi_intx_disable_bug);
1843 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1844 PCI_DEVICE_ID_TIGON3_5780S,
1845 quirk_msi_intx_disable_bug);
1846 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1847 PCI_DEVICE_ID_TIGON3_5714,
1848 quirk_msi_intx_disable_bug);
1849 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1850 PCI_DEVICE_ID_TIGON3_5714S,
1851 quirk_msi_intx_disable_bug);
1852 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1853 PCI_DEVICE_ID_TIGON3_5715,
1854 quirk_msi_intx_disable_bug);
1855 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1856 PCI_DEVICE_ID_TIGON3_5715S,
1857 quirk_msi_intx_disable_bug);
1858
1859 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
1860 quirk_msi_intx_disable_ati_bug);
1861 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
1862 quirk_msi_intx_disable_ati_bug);
1863 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
1864 quirk_msi_intx_disable_ati_bug);
1865 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
1866 quirk_msi_intx_disable_ati_bug);
1867 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
1868 quirk_msi_intx_disable_ati_bug);
1869
1870 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
1871 quirk_msi_intx_disable_bug);
1872 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
1873 quirk_msi_intx_disable_bug);
1874 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
1875 quirk_msi_intx_disable_bug);
1876
1877 #endif /* CONFIG_PCI_MSI */
Support for the Chinese Samsung S3C2440 based development boards