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.
6 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
8 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
10 * Init/reset quirks for USB host controllers should be in the
11 * USB quirks file, where their drivers can access reuse it.
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).
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>
26 /* The Mellanox Tavor device gives false positive parity errors
27 * Mark this device with a broken_parity_status, to allow
28 * PCI scanning code to "skip" this now blacklisted device.
30 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
32 dev->broken_parity_status = 1; /* This device gives false positives */
34 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
35 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
37 /* Deal with broken BIOS'es that neglect to enable passive release,
38 which can cause problems in combination with the 82441FX/PPro MTRRs */
39 static void quirk_passive_release(struct pci_dev *dev)
41 struct pci_dev *d = NULL;
44 /* We have to make sure a particular bit is set in the PIIX3
45 ISA bridge, so we have to go out and find it. */
46 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
47 pci_read_config_byte(d, 0x82, &dlc);
49 printk(KERN_ERR "PCI: PIIX3: Enabling Passive Release on %s\n", pci_name(d));
51 pci_write_config_byte(d, 0x82, dlc);
55 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release );
56 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release );
58 /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
59 but VIA don't answer queries. If you happen to have good contacts at VIA
60 ask them for me please -- Alan
62 This appears to be BIOS not version dependent. So presumably there is a
64 int isa_dma_bridge_buggy;
65 EXPORT_SYMBOL(isa_dma_bridge_buggy);
67 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
69 if (!isa_dma_bridge_buggy) {
70 isa_dma_bridge_buggy=1;
71 printk(KERN_INFO "Activating ISA DMA hang workarounds.\n");
75 * Its not totally clear which chipsets are the problematic ones
76 * We know 82C586 and 82C596 variants are affected.
78 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs );
79 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs );
80 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs );
81 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs );
82 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs );
83 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs );
84 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs );
87 EXPORT_SYMBOL(pci_pci_problems);
90 * Chipsets where PCI->PCI transfers vanish or hang
92 static void __devinit quirk_nopcipci(struct pci_dev *dev)
94 if ((pci_pci_problems & PCIPCI_FAIL)==0) {
95 printk(KERN_INFO "Disabling direct PCI/PCI transfers.\n");
96 pci_pci_problems |= PCIPCI_FAIL;
99 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci );
100 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci );
102 static void __devinit quirk_nopciamd(struct pci_dev *dev)
105 pci_read_config_byte(dev, 0x08, &rev);
108 printk(KERN_INFO "Chipset erratum: Disabling direct PCI/AGP transfers.\n");
109 pci_pci_problems |= PCIAGP_FAIL;
112 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd );
115 * Triton requires workarounds to be used by the drivers
117 static void __devinit quirk_triton(struct pci_dev *dev)
119 if ((pci_pci_problems&PCIPCI_TRITON)==0) {
120 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
121 pci_pci_problems |= PCIPCI_TRITON;
124 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton );
125 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton );
126 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton );
127 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton );
130 * VIA Apollo KT133 needs PCI latency patch
131 * Made according to a windows driver based patch by George E. Breese
132 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
133 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
134 * the info on which Mr Breese based his work.
136 * Updated based on further information from the site and also on
137 * information provided by VIA
139 static void quirk_vialatency(struct pci_dev *dev)
144 /* Ok we have a potential problem chipset here. Now see if we have
145 a buggy southbridge */
147 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
149 pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
150 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
151 /* Check for buggy part revisions */
152 if (rev < 0x40 || rev > 0x42)
155 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
156 if (p==NULL) /* No problem parts */
158 pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
159 /* Check for buggy part revisions */
160 if (rev < 0x10 || rev > 0x12)
165 * Ok we have the problem. Now set the PCI master grant to
166 * occur every master grant. The apparent bug is that under high
167 * PCI load (quite common in Linux of course) you can get data
168 * loss when the CPU is held off the bus for 3 bus master requests
169 * This happens to include the IDE controllers....
171 * VIA only apply this fix when an SB Live! is present but under
172 * both Linux and Windows this isnt enough, and we have seen
173 * corruption without SB Live! but with things like 3 UDMA IDE
174 * controllers. So we ignore that bit of the VIA recommendation..
177 pci_read_config_byte(dev, 0x76, &busarb);
178 /* Set bit 4 and bi 5 of byte 76 to 0x01
179 "Master priority rotation on every PCI master grant */
182 pci_write_config_byte(dev, 0x76, busarb);
183 printk(KERN_INFO "Applying VIA southbridge workaround.\n");
187 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency );
188 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency );
189 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency );
190 /* Must restore this on a resume from RAM */
191 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency );
192 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency );
193 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency );
196 * VIA Apollo VP3 needs ETBF on BT848/878
198 static void __devinit quirk_viaetbf(struct pci_dev *dev)
200 if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
201 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
202 pci_pci_problems |= PCIPCI_VIAETBF;
205 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf );
207 static void __devinit quirk_vsfx(struct pci_dev *dev)
209 if ((pci_pci_problems&PCIPCI_VSFX)==0) {
210 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
211 pci_pci_problems |= PCIPCI_VSFX;
214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx );
217 * Ali Magik requires workarounds to be used by the drivers
218 * that DMA to AGP space. Latency must be set to 0xA and triton
219 * workaround applied too
220 * [Info kindly provided by ALi]
222 static void __init quirk_alimagik(struct pci_dev *dev)
224 if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
225 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
226 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
229 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik );
230 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik );
233 * Natoma has some interesting boundary conditions with Zoran stuff
236 static void __devinit quirk_natoma(struct pci_dev *dev)
238 if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
239 printk(KERN_INFO "Limiting direct PCI/PCI transfers.\n");
240 pci_pci_problems |= PCIPCI_NATOMA;
243 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma );
244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma );
245 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma );
246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma );
247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma );
248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma );
251 * This chip can cause PCI parity errors if config register 0xA0 is read
252 * while DMAs are occurring.
254 static void __devinit quirk_citrine(struct pci_dev *dev)
256 dev->cfg_size = 0xA0;
258 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine );
261 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
262 * If it's needed, re-allocate the region.
264 static void __devinit quirk_s3_64M(struct pci_dev *dev)
266 struct resource *r = &dev->resource[0];
268 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
273 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M );
274 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M );
276 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
277 unsigned size, int nr, const char *name)
281 struct pci_bus_region bus_region;
282 struct resource *res = dev->resource + nr;
284 res->name = pci_name(dev);
286 res->end = region + size - 1;
287 res->flags = IORESOURCE_IO;
289 /* Convert from PCI bus to resource space. */
290 bus_region.start = res->start;
291 bus_region.end = res->end;
292 pcibios_bus_to_resource(dev, res, &bus_region);
294 pci_claim_resource(dev, nr);
295 printk("PCI quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
300 * ATI Northbridge setups MCE the processor if you even
301 * read somewhere between 0x3b0->0x3bb or read 0x3d3
303 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
305 printk(KERN_INFO "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb.\n");
306 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
307 request_region(0x3b0, 0x0C, "RadeonIGP");
308 request_region(0x3d3, 0x01, "RadeonIGP");
310 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce );
313 * Let's make the southbridge information explicit instead
314 * of having to worry about people probing the ACPI areas,
315 * for example.. (Yes, it happens, and if you read the wrong
316 * ACPI register it will put the machine to sleep with no
317 * way of waking it up again. Bummer).
319 * ALI M7101: Two IO regions pointed to by words at
320 * 0xE0 (64 bytes of ACPI registers)
321 * 0xE2 (32 bytes of SMB registers)
323 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
327 pci_read_config_word(dev, 0xE0, ®ion);
328 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
329 pci_read_config_word(dev, 0xE2, ®ion);
330 quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi );
334 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
337 u32 mask, size, base;
339 pci_read_config_dword(dev, port, &devres);
340 if ((devres & enable) != enable)
342 mask = (devres >> 16) & 15;
343 base = devres & 0xffff;
346 unsigned bit = size >> 1;
347 if ((bit & mask) == bit)
352 * For now we only print it out. Eventually we'll want to
353 * reserve it (at least if it's in the 0x1000+ range), but
354 * let's get enough confirmation reports first.
357 printk("%s PIO at %04x-%04x\n", name, base, base + size - 1);
360 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
363 u32 mask, size, base;
365 pci_read_config_dword(dev, port, &devres);
366 if ((devres & enable) != enable)
368 base = devres & 0xffff0000;
369 mask = (devres & 0x3f) << 16;
372 unsigned bit = size >> 1;
373 if ((bit & mask) == bit)
378 * For now we only print it out. Eventually we'll want to
379 * reserve it, but let's get enough confirmation reports first.
382 printk("%s MMIO at %04x-%04x\n", name, base, base + size - 1);
386 * PIIX4 ACPI: Two IO regions pointed to by longwords at
387 * 0x40 (64 bytes of ACPI registers)
388 * 0x90 (16 bytes of SMB registers)
389 * and a few strange programmable PIIX4 device resources.
391 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
395 pci_read_config_dword(dev, 0x40, ®ion);
396 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
397 pci_read_config_dword(dev, 0x90, ®ion);
398 quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
400 /* Device resource A has enables for some of the other ones */
401 pci_read_config_dword(dev, 0x5c, &res_a);
403 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
404 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
406 /* Device resource D is just bitfields for static resources */
408 /* Device 12 enabled? */
409 if (res_a & (1 << 29)) {
410 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
411 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
413 /* Device 13 enabled? */
414 if (res_a & (1 << 30)) {
415 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
416 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
418 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
419 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
421 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi );
422 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi );
425 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
426 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
427 * 0x58 (64 bytes of GPIO I/O space)
429 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
433 pci_read_config_dword(dev, 0x40, ®ion);
434 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
436 pci_read_config_dword(dev, 0x58, ®ion);
437 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
439 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi );
440 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi );
441 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi );
442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi );
443 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi );
444 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi );
445 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi );
446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi );
447 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi );
448 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi );
450 static void __devinit quirk_ich6_lpc_acpi(struct pci_dev *dev)
454 pci_read_config_dword(dev, 0x40, ®ion);
455 quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
457 pci_read_config_dword(dev, 0x48, ®ion);
458 quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
460 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc_acpi );
461 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc_acpi );
462 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich6_lpc_acpi );
463 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich6_lpc_acpi );
464 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich6_lpc_acpi );
465 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich6_lpc_acpi );
466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich6_lpc_acpi );
467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich6_lpc_acpi );
470 * VIA ACPI: One IO region pointed to by longword at
471 * 0x48 or 0x20 (256 bytes of ACPI registers)
473 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
478 pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
480 pci_read_config_dword(dev, 0x48, ®ion);
481 region &= PCI_BASE_ADDRESS_IO_MASK;
482 quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
485 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi );
488 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
489 * 0x48 (256 bytes of ACPI registers)
490 * 0x70 (128 bytes of hardware monitoring register)
491 * 0x90 (16 bytes of SMB registers)
493 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
498 quirk_vt82c586_acpi(dev);
500 pci_read_config_word(dev, 0x70, &hm);
501 hm &= PCI_BASE_ADDRESS_IO_MASK;
502 quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
504 pci_read_config_dword(dev, 0x90, &smb);
505 smb &= PCI_BASE_ADDRESS_IO_MASK;
506 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
508 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi );
511 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
512 * 0x88 (128 bytes of power management registers)
513 * 0xd0 (16 bytes of SMB registers)
515 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
519 pci_read_config_word(dev, 0x88, &pm);
520 pm &= PCI_BASE_ADDRESS_IO_MASK;
521 quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
523 pci_read_config_word(dev, 0xd0, &smb);
524 smb &= PCI_BASE_ADDRESS_IO_MASK;
525 quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
527 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
530 #ifdef CONFIG_X86_IO_APIC
532 #include <asm/io_apic.h>
535 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
536 * devices to the external APIC.
538 * TODO: When we have device-specific interrupt routers,
539 * this code will go away from quirks.
541 static void quirk_via_ioapic(struct pci_dev *dev)
546 tmp = 0; /* nothing routed to external APIC */
548 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
550 printk(KERN_INFO "PCI: %sbling Via external APIC routing\n",
551 tmp == 0 ? "Disa" : "Ena");
553 /* Offset 0x58: External APIC IRQ output control */
554 pci_write_config_byte (dev, 0x58, tmp);
556 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic );
557 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic );
560 * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
561 * This leads to doubled level interrupt rates.
562 * Set this bit to get rid of cycle wastage.
563 * Otherwise uncritical.
565 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
568 #define BYPASS_APIC_DEASSERT 8
570 pci_read_config_byte(dev, 0x5B, &misc_control2);
571 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
572 printk(KERN_INFO "PCI: Bypassing VIA 8237 APIC De-Assert Message\n");
573 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
576 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
577 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
580 * The AMD io apic can hang the box when an apic irq is masked.
581 * We check all revs >= B0 (yet not in the pre production!) as the bug
582 * is currently marked NoFix
584 * We have multiple reports of hangs with this chipset that went away with
585 * noapic specified. For the moment we assume it's the erratum. We may be wrong
586 * of course. However the advice is demonstrably good even if so..
588 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
592 pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
594 printk(KERN_WARNING "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
595 printk(KERN_WARNING " : booting with the \"noapic\" option.\n");
598 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic );
600 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
602 if (dev->devfn == 0 && dev->bus->number == 0)
605 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_ANY_ID, quirk_ioapic_rmw );
607 #define AMD8131_revA0 0x01
608 #define AMD8131_revB0 0x11
609 #define AMD8131_MISC 0x40
610 #define AMD8131_NIOAMODE_BIT 0
611 static void quirk_amd_8131_ioapic(struct pci_dev *dev)
613 unsigned char revid, tmp;
618 pci_read_config_byte(dev, PCI_REVISION_ID, &revid);
619 if (revid == AMD8131_revA0 || revid == AMD8131_revB0) {
620 printk(KERN_INFO "Fixing up AMD8131 IOAPIC mode\n");
621 pci_read_config_byte( dev, AMD8131_MISC, &tmp);
622 tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
623 pci_write_config_byte( dev, AMD8131_MISC, tmp);
626 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
627 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_ioapic);
628 #endif /* CONFIG_X86_IO_APIC */
632 * FIXME: it is questionable that quirk_via_acpi
633 * is needed. It shows up as an ISA bridge, and does not
634 * support the PCI_INTERRUPT_LINE register at all. Therefore
635 * it seems like setting the pci_dev's 'irq' to the
636 * value of the ACPI SCI interrupt is only done for convenience.
639 static void __devinit quirk_via_acpi(struct pci_dev *d)
642 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
645 pci_read_config_byte(d, 0x42, &irq);
647 if (irq && (irq != 2))
650 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi );
651 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi );
655 * VIA bridges which have VLink
658 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
660 static void quirk_via_bridge(struct pci_dev *dev)
662 /* See what bridge we have and find the device ranges */
663 switch (dev->device) {
664 case PCI_DEVICE_ID_VIA_82C686:
665 /* The VT82C686 is special, it attaches to PCI and can have
666 any device number. All its subdevices are functions of
667 that single device. */
668 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
669 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
671 case PCI_DEVICE_ID_VIA_8237:
672 case PCI_DEVICE_ID_VIA_8237A:
673 via_vlink_dev_lo = 15;
675 case PCI_DEVICE_ID_VIA_8235:
676 via_vlink_dev_lo = 16;
678 case PCI_DEVICE_ID_VIA_8231:
679 case PCI_DEVICE_ID_VIA_8233_0:
680 case PCI_DEVICE_ID_VIA_8233A:
681 case PCI_DEVICE_ID_VIA_8233C_0:
682 via_vlink_dev_lo = 17;
686 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
687 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
688 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
689 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
690 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
691 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
692 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
693 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
696 * quirk_via_vlink - VIA VLink IRQ number update
699 * If the device we are dealing with is on a PIC IRQ we need to
700 * ensure that the IRQ line register which usually is not relevant
701 * for PCI cards, is actually written so that interrupts get sent
702 * to the right place.
703 * We only do this on systems where a VIA south bridge was detected,
704 * and only for VIA devices on the motherboard (see quirk_via_bridge
708 static void quirk_via_vlink(struct pci_dev *dev)
712 /* Check if we have VLink at all */
713 if (via_vlink_dev_lo == -1)
718 /* Don't quirk interrupts outside the legacy IRQ range */
719 if (!new_irq || new_irq > 15)
722 /* Internal device ? */
723 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
724 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
727 /* This is an internal VLink device on a PIC interrupt. The BIOS
728 ought to have set this but may not have, so we redo it */
730 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
731 if (new_irq != irq) {
732 printk(KERN_INFO "PCI: VIA VLink IRQ fixup for %s, from %d to %d\n",
733 pci_name(dev), irq, new_irq);
734 udelay(15); /* unknown if delay really needed */
735 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
738 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
741 * VIA VT82C598 has its device ID settable and many BIOSes
742 * set it to the ID of VT82C597 for backward compatibility.
743 * We need to switch it off to be able to recognize the real
746 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
748 pci_write_config_byte(dev, 0xfc, 0);
749 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
751 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id );
754 * CardBus controllers have a legacy base address that enables them
755 * to respond as i82365 pcmcia controllers. We don't want them to
756 * do this even if the Linux CardBus driver is not loaded, because
757 * the Linux i82365 driver does not (and should not) handle CardBus.
759 static void quirk_cardbus_legacy(struct pci_dev *dev)
761 if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
763 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
765 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
766 DECLARE_PCI_FIXUP_RESUME(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
769 * Following the PCI ordering rules is optional on the AMD762. I'm not
770 * sure what the designers were smoking but let's not inhale...
772 * To be fair to AMD, it follows the spec by default, its BIOS people
775 static void quirk_amd_ordering(struct pci_dev *dev)
778 pci_read_config_dword(dev, 0x4C, &pcic);
781 printk(KERN_WARNING "BIOS failed to enable PCI standards compliance, fixing this error.\n");
782 pci_write_config_dword(dev, 0x4C, pcic);
783 pci_read_config_dword(dev, 0x84, &pcic);
784 pcic |= (1<<23); /* Required in this mode */
785 pci_write_config_dword(dev, 0x84, pcic);
788 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering );
789 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering );
792 * DreamWorks provided workaround for Dunord I-3000 problem
794 * This card decodes and responds to addresses not apparently
795 * assigned to it. We force a larger allocation to ensure that
796 * nothing gets put too close to it.
798 static void __devinit quirk_dunord ( struct pci_dev * dev )
800 struct resource *r = &dev->resource [1];
804 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord );
807 * i82380FB mobile docking controller: its PCI-to-PCI bridge
808 * is subtractive decoding (transparent), and does indicate this
809 * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
812 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
814 dev->transparent = 1;
816 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge );
817 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge );
820 * Common misconfiguration of the MediaGX/Geode PCI master that will
821 * reduce PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1
822 * datasheets found at http://www.national.com/ds/GX for info on what
823 * these bits do. <christer@weinigel.se>
825 static void quirk_mediagx_master(struct pci_dev *dev)
828 pci_read_config_byte(dev, 0x41, ®);
831 printk(KERN_INFO "PCI: Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
832 pci_write_config_byte(dev, 0x41, reg);
835 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master );
836 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master );
839 * Ensure C0 rev restreaming is off. This is normally done by
840 * the BIOS but in the odd case it is not the results are corruption
841 * hence the presence of a Linux check
843 static void quirk_disable_pxb(struct pci_dev *pdev)
848 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
849 if (rev != 0x04) /* Only C0 requires this */
851 pci_read_config_word(pdev, 0x40, &config);
852 if (config & (1<<6)) {
854 pci_write_config_word(pdev, 0x40, config);
855 printk(KERN_INFO "PCI: C0 revision 450NX. Disabling PCI restreaming.\n");
858 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb );
859 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb );
862 static void __devinit quirk_sb600_sata(struct pci_dev *pdev)
864 /* set sb600 sata to ahci mode */
865 if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
868 pci_read_config_byte(pdev, 0x40, &tmp);
869 pci_write_config_byte(pdev, 0x40, tmp|1);
870 pci_write_config_byte(pdev, 0x9, 1);
871 pci_write_config_byte(pdev, 0xa, 6);
872 pci_write_config_byte(pdev, 0x40, tmp);
874 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
877 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_sb600_sata);
880 * Serverworks CSB5 IDE does not fully support native mode
882 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
885 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
889 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
890 /* PCI layer will sort out resources */
893 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide );
896 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
898 static void __init quirk_ide_samemode(struct pci_dev *pdev)
902 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
904 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
905 printk(KERN_INFO "PCI: IDE mode mismatch; forcing legacy mode\n");
908 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
911 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
913 /* This was originally an Alpha specific thing, but it really fits here.
914 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
916 static void __init quirk_eisa_bridge(struct pci_dev *dev)
918 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
920 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge );
923 * On the MSI-K8T-Neo2Fir Board, the internal Soundcard is disabled
924 * when a PCI-Soundcard is added. The BIOS only gives Options
925 * "Disabled" and "AUTO". This Quirk Sets the corresponding
926 * Register-Value to enable the Soundcard.
928 * FIXME: Presently this quirk will run on anything that has an 8237
929 * which isn't correct, we need to check DMI tables or something in
930 * order to make sure it only runs on the MSI-K8T-Neo2Fir. Because it
931 * runs everywhere at present we suppress the printk output in most
934 static void k8t_sound_hostbridge(struct pci_dev *dev)
938 pci_read_config_byte(dev, 0x50, &val);
939 if (val == 0x88 || val == 0xc8) {
940 /* Assume it's probably a MSI-K8T-Neo2Fir */
941 printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, attempting to turn soundcard ON\n");
942 pci_write_config_byte(dev, 0x50, val & (~0x40));
944 /* Verify the Change for Status output */
945 pci_read_config_byte(dev, 0x50, &val);
947 printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, soundcard still off\n");
949 printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, soundcard on\n");
952 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge);
953 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge);
956 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
957 * is not activated. The myth is that Asus said that they do not want the
958 * users to be irritated by just another PCI Device in the Win98 device
959 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
960 * package 2.7.0 for details)
962 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
963 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
964 * becomes necessary to do this tweak in two steps -- I've chosen the Host
967 static int asus_hides_smbus;
969 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
971 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
972 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
973 switch(dev->subsystem_device) {
974 case 0x8025: /* P4B-LX */
975 case 0x8070: /* P4B */
976 case 0x8088: /* P4B533 */
977 case 0x1626: /* L3C notebook */
978 asus_hides_smbus = 1;
980 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
981 switch(dev->subsystem_device) {
982 case 0x80b1: /* P4GE-V */
983 case 0x80b2: /* P4PE */
984 case 0x8093: /* P4B533-V */
985 asus_hides_smbus = 1;
987 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
988 switch(dev->subsystem_device) {
989 case 0x8030: /* P4T533 */
990 asus_hides_smbus = 1;
992 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
993 switch (dev->subsystem_device) {
994 case 0x8070: /* P4G8X Deluxe */
995 asus_hides_smbus = 1;
997 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
998 switch (dev->subsystem_device) {
999 case 0x80c9: /* PU-DLS */
1000 asus_hides_smbus = 1;
1002 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1003 switch (dev->subsystem_device) {
1004 case 0x1751: /* M2N notebook */
1005 case 0x1821: /* M5N notebook */
1006 asus_hides_smbus = 1;
1008 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1009 switch (dev->subsystem_device) {
1010 case 0x184b: /* W1N notebook */
1011 case 0x186a: /* M6Ne notebook */
1012 asus_hides_smbus = 1;
1014 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1015 switch (dev->subsystem_device) {
1016 case 0x80f2: /* P4P800-X */
1017 asus_hides_smbus = 1;
1019 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1020 switch (dev->subsystem_device) {
1021 case 0x1882: /* M6V notebook */
1022 case 0x1977: /* A6VA notebook */
1023 asus_hides_smbus = 1;
1025 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1026 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1027 switch(dev->subsystem_device) {
1028 case 0x088C: /* HP Compaq nc8000 */
1029 case 0x0890: /* HP Compaq nc6000 */
1030 asus_hides_smbus = 1;
1032 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1033 switch (dev->subsystem_device) {
1034 case 0x12bc: /* HP D330L */
1035 case 0x12bd: /* HP D530 */
1036 asus_hides_smbus = 1;
1038 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1039 switch (dev->subsystem_device) {
1040 case 0x099c: /* HP Compaq nx6110 */
1041 asus_hides_smbus = 1;
1043 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_TOSHIBA)) {
1044 if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1045 switch(dev->subsystem_device) {
1046 case 0x0001: /* Toshiba Satellite A40 */
1047 asus_hides_smbus = 1;
1049 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1050 switch(dev->subsystem_device) {
1051 case 0x0001: /* Toshiba Tecra M2 */
1052 asus_hides_smbus = 1;
1054 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1055 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1056 switch(dev->subsystem_device) {
1057 case 0xC00C: /* Samsung P35 notebook */
1058 asus_hides_smbus = 1;
1060 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1061 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1062 switch(dev->subsystem_device) {
1063 case 0x0058: /* Compaq Evo N620c */
1064 asus_hides_smbus = 1;
1068 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge );
1069 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge );
1070 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge );
1071 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge );
1072 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge );
1073 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge );
1074 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge );
1075 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge );
1076 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge );
1078 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1082 if (likely(!asus_hides_smbus))
1085 pci_read_config_word(dev, 0xF2, &val);
1087 pci_write_config_word(dev, 0xF2, val & (~0x8));
1088 pci_read_config_word(dev, 0xF2, &val);
1090 printk(KERN_INFO "PCI: i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1092 printk(KERN_INFO "PCI: Enabled i801 SMBus device\n");
1095 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc );
1096 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc );
1097 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc );
1098 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc );
1099 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc );
1100 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc );
1101 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc );
1102 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc );
1103 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc );
1104 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc );
1105 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc );
1106 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc );
1108 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1113 if (likely(!asus_hides_smbus))
1115 pci_read_config_dword(dev, 0xF0, &rcba);
1116 base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000); /* use bits 31:14, 16 kB aligned */
1117 if (base == NULL) return;
1118 val=readl(base + 0x3418); /* read the Function Disable register, dword mode only */
1119 writel(val & 0xFFFFFFF7, base + 0x3418); /* enable the SMBus device */
1121 printk(KERN_INFO "PCI: Enabled ICH6/i801 SMBus device\n");
1123 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6 );
1124 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6 );
1127 * SiS 96x south bridge: BIOS typically hides SMBus device...
1129 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1132 pci_read_config_byte(dev, 0x77, &val);
1134 printk(KERN_INFO "Enabling SiS 96x SMBus.\n");
1135 pci_write_config_byte(dev, 0x77, val & ~0x10);
1138 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus );
1139 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus );
1140 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus );
1141 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus );
1142 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus );
1143 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus );
1144 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus );
1145 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus );
1148 * ... This is further complicated by the fact that some SiS96x south
1149 * bridges pretend to be 85C503/5513 instead. In that case see if we
1150 * spotted a compatible north bridge to make sure.
1151 * (pci_find_device doesn't work yet)
1153 * We can also enable the sis96x bit in the discovery register..
1155 #define SIS_DETECT_REGISTER 0x40
1157 static void quirk_sis_503(struct pci_dev *dev)
1162 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1163 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1164 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1165 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1166 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1171 * Ok, it now shows up as a 96x.. run the 96x quirk by
1172 * hand in case it has already been processed.
1173 * (depends on link order, which is apparently not guaranteed)
1175 dev->device = devid;
1176 quirk_sis_96x_smbus(dev);
1178 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503 );
1179 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503 );
1183 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1184 * and MC97 modem controller are disabled when a second PCI soundcard is
1185 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1188 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1191 int asus_hides_ac97 = 0;
1193 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1194 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1195 asus_hides_ac97 = 1;
1198 if (!asus_hides_ac97)
1201 pci_read_config_byte(dev, 0x50, &val);
1203 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1204 pci_read_config_byte(dev, 0x50, &val);
1206 printk(KERN_INFO "PCI: onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1208 printk(KERN_INFO "PCI: enabled onboard AC97/MC97 devices\n");
1211 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc );
1212 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc );
1214 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1217 * If we are using libata we can drive this chip properly but must
1218 * do this early on to make the additional device appear during
1222 static void quirk_jmicron_dualfn(struct pci_dev *pdev)
1227 /* Only poke fn 0 */
1228 if (PCI_FUNC(pdev->devfn))
1231 switch(pdev->device) {
1232 case PCI_DEVICE_ID_JMICRON_JMB365:
1233 case PCI_DEVICE_ID_JMICRON_JMB366:
1234 /* Redirect IDE second PATA port to the right spot */
1235 pci_read_config_dword(pdev, 0x80, &conf);
1238 pci_write_config_dword(pdev, 0x80, conf);
1239 case PCI_DEVICE_ID_JMICRON_JMB361:
1240 case PCI_DEVICE_ID_JMICRON_JMB363:
1241 pci_read_config_dword(pdev, 0x40, &conf);
1242 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1243 /* Set the class codes correctly and then direct IDE 0 */
1244 conf &= ~0x000FF200; /* Clear bit 9 and 12-19 */
1245 conf |= 0x00C2A102; /* Set 1, 8, 13, 15, 17, 22, 23 */
1246 pci_write_config_dword(pdev, 0x40, conf);
1248 /* Reconfigure so that the PCI scanner discovers the
1249 device is now multifunction */
1251 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1252 pdev->hdr_type = hdr & 0x7f;
1253 pdev->multifunction = !!(hdr & 0x80);
1258 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, quirk_jmicron_dualfn);
1259 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, quirk_jmicron_dualfn);
1263 #ifdef CONFIG_X86_IO_APIC
1264 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1268 if ((pdev->class >> 8) != 0xff00)
1271 /* the first BAR is the location of the IO APIC...we must
1272 * not touch this (and it's already covered by the fixmap), so
1273 * forcibly insert it into the resource tree */
1274 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1275 insert_resource(&iomem_resource, &pdev->resource[0]);
1277 /* The next five BARs all seem to be rubbish, so just clean
1279 for (i=1; i < 6; i++) {
1280 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1284 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic );
1287 enum ide_combined_type { COMBINED = 0, IDE = 1, LIBATA = 2 };
1288 /* Defaults to combined */
1289 static enum ide_combined_type combined_mode;
1291 static int __init combined_setup(char *str)
1293 if (!strncmp(str, "ide", 3))
1294 combined_mode = IDE;
1295 else if (!strncmp(str, "libata", 6))
1296 combined_mode = LIBATA;
1297 else /* "combined" or anything else defaults to old behavior */
1298 combined_mode = COMBINED;
1302 __setup("combined_mode=", combined_setup);
1304 #ifdef CONFIG_SATA_INTEL_COMBINED
1305 static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
1311 * Narrow down to Intel SATA PCI devices.
1313 switch (pdev->device) {
1314 /* PCI ids taken from drivers/scsi/ata_piix.c */
1324 case 0x2680: /* ESB2 */
1331 case 0x2828: /* ICH8M */
1335 /* we do not handle this PCI device */
1340 * Read combined mode register.
1342 pci_read_config_byte(pdev, 0x90, &tmp); /* combined mode reg */
1345 tmp &= 0x6; /* interesting bits 2:1, PATA primary/secondary */
1346 if (tmp == 0x4) /* bits 10x */
1347 comb = (1 << 0); /* SATA port 0, PATA port 1 */
1348 else if (tmp == 0x6) /* bits 11x */
1349 comb = (1 << 2); /* PATA port 0, SATA port 1 */
1351 return; /* not in combined mode */
1353 WARN_ON((ich != 6) && (ich != 7) && (ich != 8));
1354 tmp &= 0x3; /* interesting bits 1:0 */
1356 comb = (1 << 2); /* PATA port 0, SATA port 1 */
1357 else if (tmp & (1 << 1))
1358 comb = (1 << 0); /* SATA port 0, PATA port 1 */
1360 return; /* not in combined mode */
1364 * Read programming interface register.
1365 * (Tells us if it's legacy or native mode)
1367 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1369 /* if SATA port is in native mode, we're ok. */
1373 /* Don't reserve any so the IDE driver can get them (but only if
1374 * combined_mode=ide).
1376 if (combined_mode == IDE)
1379 /* Grab them both for libata if combined_mode=libata. */
1380 if (combined_mode == LIBATA) {
1381 request_region(0x1f0, 8, "libata"); /* port 0 */
1382 request_region(0x170, 8, "libata"); /* port 1 */
1386 /* SATA port is in legacy mode. Reserve port so that
1387 * IDE driver does not attempt to use it. If request_region
1388 * fails, it will be obvious at boot time, so we don't bother
1389 * checking return values.
1391 if (comb == (1 << 0))
1392 request_region(0x1f0, 8, "libata"); /* port 0 */
1394 request_region(0x170, 8, "libata"); /* port 1 */
1396 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_intel_ide_combined );
1397 #endif /* CONFIG_SATA_INTEL_COMBINED */
1401 EXPORT_SYMBOL(pcie_mch_quirk);
1403 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1407 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch );
1408 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch );
1409 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch );
1413 * It's possible for the MSI to get corrupted if shpc and acpi
1414 * are used together on certain PXH-based systems.
1416 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1418 disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI),
1422 printk(KERN_WARNING "PCI: PXH quirk detected, "
1423 "disabling MSI for SHPC device\n");
1425 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1426 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1427 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1428 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1429 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1432 * Some Intel PCI Express chipsets have trouble with downstream
1433 * device power management.
1435 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1437 pci_pm_d3_delay = 120;
1441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1445 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1446 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1447 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1448 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1449 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1450 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1451 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1452 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1453 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1454 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1455 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1456 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1457 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1458 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1459 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1460 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1461 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1464 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1465 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1466 * Re-allocate the region if needed...
1468 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1470 struct resource *r = &dev->resource[0];
1472 if (r->start & 0x8) {
1477 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1478 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1479 quirk_tc86c001_ide);
1481 static void __devinit quirk_netmos(struct pci_dev *dev)
1483 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1484 unsigned int num_serial = dev->subsystem_device & 0xf;
1487 * These Netmos parts are multiport serial devices with optional
1488 * parallel ports. Even when parallel ports are present, they
1489 * are identified as class SERIAL, which means the serial driver
1490 * will claim them. To prevent this, mark them as class OTHER.
1491 * These combo devices should be claimed by parport_serial.
1493 * The subdevice ID is of the form 0x00PS, where <P> is the number
1494 * of parallel ports and <S> is the number of serial ports.
1496 switch (dev->device) {
1497 case PCI_DEVICE_ID_NETMOS_9735:
1498 case PCI_DEVICE_ID_NETMOS_9745:
1499 case PCI_DEVICE_ID_NETMOS_9835:
1500 case PCI_DEVICE_ID_NETMOS_9845:
1501 case PCI_DEVICE_ID_NETMOS_9855:
1502 if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1504 printk(KERN_INFO "PCI: Netmos %04x (%u parallel, "
1505 "%u serial); changing class SERIAL to OTHER "
1506 "(use parport_serial)\n",
1507 dev->device, num_parallel, num_serial);
1508 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1509 (dev->class & 0xff);
1513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1515 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1522 switch (dev->device) {
1523 /* PCI IDs taken from drivers/net/e100.c */
1525 case 0x1030 ... 0x1034:
1526 case 0x1038 ... 0x103E:
1527 case 0x1050 ... 0x1057:
1529 case 0x1064 ... 0x106B:
1530 case 0x1091 ... 0x1095:
1543 * Some firmware hands off the e100 with interrupts enabled,
1544 * which can cause a flood of interrupts if packets are
1545 * received before the driver attaches to the device. So
1546 * disable all e100 interrupts here. The driver will
1547 * re-enable them when it's ready.
1549 pci_read_config_word(dev, PCI_COMMAND, &command);
1550 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar);
1552 if (!(command & PCI_COMMAND_MEMORY) || !bar)
1555 csr = ioremap(bar, 8);
1557 printk(KERN_WARNING "PCI: Can't map %s e100 registers\n",
1562 cmd_hi = readb(csr + 3);
1564 printk(KERN_WARNING "PCI: Firmware left %s e100 interrupts "
1565 "enabled, disabling\n", pci_name(dev));
1571 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1573 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1575 /* rev 1 ncr53c810 chips don't set the class at all which means
1576 * they don't get their resources remapped. Fix that here.
1579 if (dev->class == PCI_CLASS_NOT_DEFINED) {
1580 printk(KERN_INFO "NCR 53c810 rev 1 detected, setting PCI class.\n");
1581 dev->class = PCI_CLASS_STORAGE_SCSI;
1584 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1586 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
1589 if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
1590 (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
1591 pr_debug("PCI: Calling quirk %p for %s\n", f->hook, pci_name(dev));
1598 extern struct pci_fixup __start_pci_fixups_early[];
1599 extern struct pci_fixup __end_pci_fixups_early[];
1600 extern struct pci_fixup __start_pci_fixups_header[];
1601 extern struct pci_fixup __end_pci_fixups_header[];
1602 extern struct pci_fixup __start_pci_fixups_final[];
1603 extern struct pci_fixup __end_pci_fixups_final[];
1604 extern struct pci_fixup __start_pci_fixups_enable[];
1605 extern struct pci_fixup __end_pci_fixups_enable[];
1606 extern struct pci_fixup __start_pci_fixups_resume[];
1607 extern struct pci_fixup __end_pci_fixups_resume[];
1610 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
1612 struct pci_fixup *start, *end;
1615 case pci_fixup_early:
1616 start = __start_pci_fixups_early;
1617 end = __end_pci_fixups_early;
1620 case pci_fixup_header:
1621 start = __start_pci_fixups_header;
1622 end = __end_pci_fixups_header;
1625 case pci_fixup_final:
1626 start = __start_pci_fixups_final;
1627 end = __end_pci_fixups_final;
1630 case pci_fixup_enable:
1631 start = __start_pci_fixups_enable;
1632 end = __end_pci_fixups_enable;
1635 case pci_fixup_resume:
1636 start = __start_pci_fixups_resume;
1637 end = __end_pci_fixups_resume;
1641 /* stupid compiler warning, you would think with an enum... */
1644 pci_do_fixups(dev, start, end);
1646 EXPORT_SYMBOL(pci_fixup_device);
1648 /* Enable 1k I/O space granularity on the Intel P64H2 */
1649 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1652 u8 io_base_lo, io_limit_lo;
1653 unsigned long base, limit;
1654 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1656 pci_read_config_word(dev, 0x40, &en1k);
1659 printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n");
1661 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1662 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1663 base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1664 limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1666 if (base <= limit) {
1668 res->end = limit + 0x3ff;
1672 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
1674 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1675 * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1676 * in drivers/pci/setup-bus.c
1678 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1680 u16 en1k, iobl_adr, iobl_adr_1k;
1681 struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1683 pci_read_config_word(dev, 0x40, &en1k);
1686 pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1688 iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1690 if (iobl_adr != iobl_adr_1k) {
1691 printk(KERN_INFO "PCI: Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1 KB Granularity\n",
1692 iobl_adr,iobl_adr_1k);
1693 pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1697 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io_fix_iobl);
1699 /* Under some circumstances, AER is not linked with extended capabilities.
1700 * Force it to be linked by setting the corresponding control bit in the
1703 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1706 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1708 pci_write_config_byte(dev, 0xf41, b | 0x20);
1710 "PCI: Linking AER extended capability on %s\n",
1715 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1716 quirk_nvidia_ck804_pcie_aer_ext_cap);
1717 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1718 quirk_nvidia_ck804_pcie_aer_ext_cap);
1720 #ifdef CONFIG_PCI_MSI
1721 /* The Serverworks PCI-X chipset does not support MSI. We cannot easily rely
1722 * on setting PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
1723 * some other busses controlled by the chipset even if Linux is not aware of it.
1724 * Instead of setting the flag on all busses in the machine, simply disable MSI
1727 static void __init quirk_svw_msi(struct pci_dev *dev)
1730 printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
1732 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_svw_msi);
1734 /* Disable MSI on chipsets that are known to not support it */
1735 static void __devinit quirk_disable_msi(struct pci_dev *dev)
1737 if (dev->subordinate) {
1738 printk(KERN_WARNING "PCI: MSI quirk detected. "
1739 "PCI_BUS_FLAGS_NO_MSI set for %s subordinate bus.\n",
1741 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1744 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
1746 /* Go through the list of Hypertransport capabilities and
1747 * return 1 if a HT MSI capability is found and enabled */
1748 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
1752 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1753 while (pos && ttl--) {
1756 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1759 printk(KERN_INFO "PCI: Found %s HT MSI Mapping on %s\n",
1760 flags & HT_MSI_FLAGS_ENABLE ?
1761 "enabled" : "disabled", pci_name(dev));
1762 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
1765 pos = pci_find_next_ht_capability(dev, pos,
1766 HT_CAPTYPE_MSI_MAPPING);
1771 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
1772 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
1774 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
1775 printk(KERN_WARNING "PCI: MSI quirk detected. "
1776 "MSI disabled on chipset %s.\n",
1778 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1781 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
1784 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
1785 * MSI are supported if the MSI capability set in any of these mappings.
1787 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
1789 struct pci_dev *pdev;
1791 if (!dev->subordinate)
1794 /* check HT MSI cap on this chipset and the root one.
1795 * a single one having MSI is enough to be sure that MSI are supported.
1797 pdev = pci_get_slot(dev->bus, 0);
1800 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
1801 printk(KERN_WARNING "PCI: MSI quirk detected. "
1802 "MSI disabled on chipset %s.\n",
1804 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1808 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1809 quirk_nvidia_ck804_msi_ht_cap);
1810 #endif /* CONFIG_PCI_MSI */