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1 /*
2  *  This file contains work-arounds for many known PCI hardware
3  *  bugs.  Devices present only on certain architectures (host
4  *  bridges et cetera) should be handled in arch-specific code.
5  *
6  *  Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
7  *
8  *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
9  *
10  *  Init/reset quirks for USB host controllers should be in the
11  *  USB quirks file, where their drivers can access reuse it.
12  *
13  *  The bridge optimization stuff has been removed. If you really
14  *  have a silly BIOS which is unable to set your host bridge right,
15  *  use the PowerTweak utility (see http://powertweak.sourceforge.net).
16  */
17 
18 #include <linux/types.h>
19 #include <linux/kernel.h>
20 #include <linux/pci.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/acpi.h>
24 #include <linux/kallsyms.h>
25 #include <linux/dmi.h>
26 #include <linux/pci-aspm.h>
27 #include "pci.h"
28 
29 int isa_dma_bridge_buggy;
30 EXPORT_SYMBOL(isa_dma_bridge_buggy);
31 int pci_pci_problems;
32 EXPORT_SYMBOL(pci_pci_problems);
33 int pcie_mch_quirk;
34 EXPORT_SYMBOL(pcie_mch_quirk);
35 
36 #ifdef CONFIG_PCI_QUIRKS
37 /* The Mellanox Tavor device gives false positive parity errors
38  * Mark this device with a broken_parity_status, to allow
39  * PCI scanning code to "skip" this now blacklisted device.
40  */
quirk_mellanox_tavor(struct pci_dev * dev)41 static void __devinit quirk_mellanox_tavor(struct pci_dev *dev)
42 {
43 	dev->broken_parity_status = 1;	/* This device gives false positives */
44 }
45 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
46 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
47 
48 /* Deal with broken BIOS'es that neglect to enable passive release,
49    which can cause problems in combination with the 82441FX/PPro MTRRs */
quirk_passive_release(struct pci_dev * dev)50 static void quirk_passive_release(struct pci_dev *dev)
51 {
52 	struct pci_dev *d = NULL;
53 	unsigned char dlc;
54 
55 	/* We have to make sure a particular bit is set in the PIIX3
56 	   ISA bridge, so we have to go out and find it. */
57 	while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
58 		pci_read_config_byte(d, 0x82, &dlc);
59 		if (!(dlc & 1<<1)) {
60 			dev_info(&d->dev, "PIIX3: Enabling Passive Release\n");
61 			dlc |= 1<<1;
62 			pci_write_config_byte(d, 0x82, dlc);
63 		}
64 	}
65 }
66 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
67 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
68 
69 /*  The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround
70     but VIA don't answer queries. If you happen to have good contacts at VIA
71     ask them for me please -- Alan
72 
73     This appears to be BIOS not version dependent. So presumably there is a
74     chipset level fix */
75 
quirk_isa_dma_hangs(struct pci_dev * dev)76 static void __devinit quirk_isa_dma_hangs(struct pci_dev *dev)
77 {
78 	if (!isa_dma_bridge_buggy) {
79 		isa_dma_bridge_buggy=1;
80 		dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n");
81 	}
82 }
83 	/*
84 	 * Its not totally clear which chipsets are the problematic ones
85 	 * We know 82C586 and 82C596 variants are affected.
86 	 */
87 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_0,	quirk_isa_dma_hangs);
88 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C596,	quirk_isa_dma_hangs);
89 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82371SB_0,  quirk_isa_dma_hangs);
90 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M1533, 	quirk_isa_dma_hangs);
91 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_1,	quirk_isa_dma_hangs);
92 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_2,	quirk_isa_dma_hangs);
93 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_3,	quirk_isa_dma_hangs);
94 
95 /*
96  *	Chipsets where PCI->PCI transfers vanish or hang
97  */
quirk_nopcipci(struct pci_dev * dev)98 static void __devinit quirk_nopcipci(struct pci_dev *dev)
99 {
100 	if ((pci_pci_problems & PCIPCI_FAIL)==0) {
101 		dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n");
102 		pci_pci_problems |= PCIPCI_FAIL;
103 	}
104 }
105 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_5597,		quirk_nopcipci);
106 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_496,		quirk_nopcipci);
107 
quirk_nopciamd(struct pci_dev * dev)108 static void __devinit quirk_nopciamd(struct pci_dev *dev)
109 {
110 	u8 rev;
111 	pci_read_config_byte(dev, 0x08, &rev);
112 	if (rev == 0x13) {
113 		/* Erratum 24 */
114 		dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
115 		pci_pci_problems |= PCIAGP_FAIL;
116 	}
117 }
118 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8151_0,	quirk_nopciamd);
119 
120 /*
121  *	Triton requires workarounds to be used by the drivers
122  */
quirk_triton(struct pci_dev * dev)123 static void __devinit quirk_triton(struct pci_dev *dev)
124 {
125 	if ((pci_pci_problems&PCIPCI_TRITON)==0) {
126 		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
127 		pci_pci_problems |= PCIPCI_TRITON;
128 	}
129 }
130 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82437, 	quirk_triton);
131 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82437VX, 	quirk_triton);
132 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82439, 	quirk_triton);
133 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82439TX, 	quirk_triton);
134 
135 /*
136  *	VIA Apollo KT133 needs PCI latency patch
137  *	Made according to a windows driver based patch by George E. Breese
138  *	see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
139  *      Also see http://www.au-ja.org/review-kt133a-1-en.phtml for
140  *      the info on which Mr Breese based his work.
141  *
142  *	Updated based on further information from the site and also on
143  *	information provided by VIA
144  */
quirk_vialatency(struct pci_dev * dev)145 static void quirk_vialatency(struct pci_dev *dev)
146 {
147 	struct pci_dev *p;
148 	u8 busarb;
149 	/* Ok we have a potential problem chipset here. Now see if we have
150 	   a buggy southbridge */
151 
152 	p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
153 	if (p!=NULL) {
154 		/* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
155 		/* Check for buggy part revisions */
156 		if (p->revision < 0x40 || p->revision > 0x42)
157 			goto exit;
158 	} else {
159 		p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
160 		if (p==NULL)	/* No problem parts */
161 			goto exit;
162 		/* Check for buggy part revisions */
163 		if (p->revision < 0x10 || p->revision > 0x12)
164 			goto exit;
165 	}
166 
167 	/*
168 	 *	Ok we have the problem. Now set the PCI master grant to
169 	 *	occur every master grant. The apparent bug is that under high
170 	 *	PCI load (quite common in Linux of course) you can get data
171 	 *	loss when the CPU is held off the bus for 3 bus master requests
172 	 *	This happens to include the IDE controllers....
173 	 *
174 	 *	VIA only apply this fix when an SB Live! is present but under
175 	 *	both Linux and Windows this isnt enough, and we have seen
176 	 *	corruption without SB Live! but with things like 3 UDMA IDE
177 	 *	controllers. So we ignore that bit of the VIA recommendation..
178 	 */
179 
180 	pci_read_config_byte(dev, 0x76, &busarb);
181 	/* Set bit 4 and bi 5 of byte 76 to 0x01
182 	   "Master priority rotation on every PCI master grant */
183 	busarb &= ~(1<<5);
184 	busarb |= (1<<4);
185 	pci_write_config_byte(dev, 0x76, busarb);
186 	dev_info(&dev->dev, "Applying VIA southbridge workaround\n");
187 exit:
188 	pci_dev_put(p);
189 }
190 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8363_0,	quirk_vialatency);
191 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8371_1,	quirk_vialatency);
192 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8361,		quirk_vialatency);
193 /* Must restore this on a resume from RAM */
194 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8363_0,	quirk_vialatency);
195 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8371_1,	quirk_vialatency);
196 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8361,		quirk_vialatency);
197 
198 /*
199  *	VIA Apollo VP3 needs ETBF on BT848/878
200  */
quirk_viaetbf(struct pci_dev * dev)201 static void __devinit quirk_viaetbf(struct pci_dev *dev)
202 {
203 	if ((pci_pci_problems&PCIPCI_VIAETBF)==0) {
204 		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
205 		pci_pci_problems |= PCIPCI_VIAETBF;
206 	}
207 }
208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C597_0,	quirk_viaetbf);
209 
quirk_vsfx(struct pci_dev * dev)210 static void __devinit quirk_vsfx(struct pci_dev *dev)
211 {
212 	if ((pci_pci_problems&PCIPCI_VSFX)==0) {
213 		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
214 		pci_pci_problems |= PCIPCI_VSFX;
215 	}
216 }
217 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C576,	quirk_vsfx);
218 
219 /*
220  *	Ali Magik requires workarounds to be used by the drivers
221  *	that DMA to AGP space. Latency must be set to 0xA and triton
222  *	workaround applied too
223  *	[Info kindly provided by ALi]
224  */
quirk_alimagik(struct pci_dev * dev)225 static void __init quirk_alimagik(struct pci_dev *dev)
226 {
227 	if ((pci_pci_problems&PCIPCI_ALIMAGIK)==0) {
228 		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
229 		pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
230 	}
231 }
232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 	PCI_DEVICE_ID_AL_M1647, 	quirk_alimagik);
233 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 	PCI_DEVICE_ID_AL_M1651, 	quirk_alimagik);
234 
235 /*
236  *	Natoma has some interesting boundary conditions with Zoran stuff
237  *	at least
238  */
quirk_natoma(struct pci_dev * dev)239 static void __devinit quirk_natoma(struct pci_dev *dev)
240 {
241 	if ((pci_pci_problems&PCIPCI_NATOMA)==0) {
242 		dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n");
243 		pci_pci_problems |= PCIPCI_NATOMA;
244 	}
245 }
246 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82441, 	quirk_natoma);
247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443LX_0, 	quirk_natoma);
248 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443LX_1, 	quirk_natoma);
249 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443BX_0, 	quirk_natoma);
250 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443BX_1, 	quirk_natoma);
251 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443BX_2, 	quirk_natoma);
252 
253 /*
254  *  This chip can cause PCI parity errors if config register 0xA0 is read
255  *  while DMAs are occurring.
256  */
quirk_citrine(struct pci_dev * dev)257 static void __devinit quirk_citrine(struct pci_dev *dev)
258 {
259 	dev->cfg_size = 0xA0;
260 }
261 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM,	PCI_DEVICE_ID_IBM_CITRINE,	quirk_citrine);
262 
263 /*
264  *  S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
265  *  If it's needed, re-allocate the region.
266  */
quirk_s3_64M(struct pci_dev * dev)267 static void __devinit quirk_s3_64M(struct pci_dev *dev)
268 {
269 	struct resource *r = &dev->resource[0];
270 
271 	if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
272 		r->start = 0;
273 		r->end = 0x3ffffff;
274 	}
275 }
276 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3,	PCI_DEVICE_ID_S3_868,		quirk_s3_64M);
277 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3,	PCI_DEVICE_ID_S3_968,		quirk_s3_64M);
278 
quirk_io_region(struct pci_dev * dev,unsigned region,unsigned size,int nr,const char * name)279 static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
280 	unsigned size, int nr, const char *name)
281 {
282 	region &= ~(size-1);
283 	if (region) {
284 		struct pci_bus_region bus_region;
285 		struct resource *res = dev->resource + nr;
286 
287 		res->name = pci_name(dev);
288 		res->start = region;
289 		res->end = region + size - 1;
290 		res->flags = IORESOURCE_IO;
291 
292 		/* Convert from PCI bus to resource space.  */
293 		bus_region.start = res->start;
294 		bus_region.end = res->end;
295 		pcibios_bus_to_resource(dev, res, &bus_region);
296 
297 		pci_claim_resource(dev, nr);
298 		dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
299 	}
300 }
301 
302 /*
303  *	ATI Northbridge setups MCE the processor if you even
304  *	read somewhere between 0x3b0->0x3bb or read 0x3d3
305  */
quirk_ati_exploding_mce(struct pci_dev * dev)306 static void __devinit quirk_ati_exploding_mce(struct pci_dev *dev)
307 {
308 	dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
309 	/* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
310 	request_region(0x3b0, 0x0C, "RadeonIGP");
311 	request_region(0x3d3, 0x01, "RadeonIGP");
312 }
313 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI,	PCI_DEVICE_ID_ATI_RS100,   quirk_ati_exploding_mce);
314 
315 /*
316  * Let's make the southbridge information explicit instead
317  * of having to worry about people probing the ACPI areas,
318  * for example.. (Yes, it happens, and if you read the wrong
319  * ACPI register it will put the machine to sleep with no
320  * way of waking it up again. Bummer).
321  *
322  * ALI M7101: Two IO regions pointed to by words at
323  *	0xE0 (64 bytes of ACPI registers)
324  *	0xE2 (32 bytes of SMB registers)
325  */
quirk_ali7101_acpi(struct pci_dev * dev)326 static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
327 {
328 	u16 region;
329 
330 	pci_read_config_word(dev, 0xE0, &region);
331 	quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
332 	pci_read_config_word(dev, 0xE2, &region);
333 	quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
334 }
335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M7101,		quirk_ali7101_acpi);
336 
piix4_io_quirk(struct pci_dev * dev,const char * name,unsigned int port,unsigned int enable)337 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
338 {
339 	u32 devres;
340 	u32 mask, size, base;
341 
342 	pci_read_config_dword(dev, port, &devres);
343 	if ((devres & enable) != enable)
344 		return;
345 	mask = (devres >> 16) & 15;
346 	base = devres & 0xffff;
347 	size = 16;
348 	for (;;) {
349 		unsigned bit = size >> 1;
350 		if ((bit & mask) == bit)
351 			break;
352 		size = bit;
353 	}
354 	/*
355 	 * For now we only print it out. Eventually we'll want to
356 	 * reserve it (at least if it's in the 0x1000+ range), but
357 	 * let's get enough confirmation reports first.
358 	 */
359 	base &= -size;
360 	dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
361 }
362 
piix4_mem_quirk(struct pci_dev * dev,const char * name,unsigned int port,unsigned int enable)363 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
364 {
365 	u32 devres;
366 	u32 mask, size, base;
367 
368 	pci_read_config_dword(dev, port, &devres);
369 	if ((devres & enable) != enable)
370 		return;
371 	base = devres & 0xffff0000;
372 	mask = (devres & 0x3f) << 16;
373 	size = 128 << 16;
374 	for (;;) {
375 		unsigned bit = size >> 1;
376 		if ((bit & mask) == bit)
377 			break;
378 		size = bit;
379 	}
380 	/*
381 	 * For now we only print it out. Eventually we'll want to
382 	 * reserve it, but let's get enough confirmation reports first.
383 	 */
384 	base &= -size;
385 	dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
386 }
387 
388 /*
389  * PIIX4 ACPI: Two IO regions pointed to by longwords at
390  *	0x40 (64 bytes of ACPI registers)
391  *	0x90 (16 bytes of SMB registers)
392  * and a few strange programmable PIIX4 device resources.
393  */
quirk_piix4_acpi(struct pci_dev * dev)394 static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
395 {
396 	u32 region, res_a;
397 
398 	pci_read_config_dword(dev, 0x40, &region);
399 	quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
400 	pci_read_config_dword(dev, 0x90, &region);
401 	quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
402 
403 	/* Device resource A has enables for some of the other ones */
404 	pci_read_config_dword(dev, 0x5c, &res_a);
405 
406 	piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
407 	piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
408 
409 	/* Device resource D is just bitfields for static resources */
410 
411 	/* Device 12 enabled? */
412 	if (res_a & (1 << 29)) {
413 		piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
414 		piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
415 	}
416 	/* Device 13 enabled? */
417 	if (res_a & (1 << 30)) {
418 		piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
419 		piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
420 	}
421 	piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
422 	piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
423 }
424 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82371AB_3,	quirk_piix4_acpi);
425 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82443MX_3,	quirk_piix4_acpi);
426 
427 /*
428  * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
429  *	0x40 (128 bytes of ACPI, GPIO & TCO registers)
430  *	0x58 (64 bytes of GPIO I/O space)
431  */
quirk_ich4_lpc_acpi(struct pci_dev * dev)432 static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
433 {
434 	u32 region;
435 
436 	pci_read_config_dword(dev, 0x40, &region);
437 	quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
438 
439 	pci_read_config_dword(dev, 0x58, &region);
440 	quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
441 }
442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AA_0,		quirk_ich4_lpc_acpi);
443 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801AB_0,		quirk_ich4_lpc_acpi);
444 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_0,		quirk_ich4_lpc_acpi);
445 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801BA_10,	quirk_ich4_lpc_acpi);
446 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_0,		quirk_ich4_lpc_acpi);
447 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801CA_12,	quirk_ich4_lpc_acpi);
448 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_0,		quirk_ich4_lpc_acpi);
449 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801DB_12,	quirk_ich4_lpc_acpi);
450 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82801EB_0,		quirk_ich4_lpc_acpi);
451 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_ESB_1,		quirk_ich4_lpc_acpi);
452 
ich6_lpc_acpi_gpio(struct pci_dev * dev)453 static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
454 {
455 	u32 region;
456 
457 	pci_read_config_dword(dev, 0x40, &region);
458 	quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
459 
460 	pci_read_config_dword(dev, 0x48, &region);
461 	quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
462 }
463 
ich6_lpc_generic_decode(struct pci_dev * dev,unsigned reg,const char * name,int dynsize)464 static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
465 {
466 	u32 val;
467 	u32 size, base;
468 
469 	pci_read_config_dword(dev, reg, &val);
470 
471 	/* Enabled? */
472 	if (!(val & 1))
473 		return;
474 	base = val & 0xfffc;
475 	if (dynsize) {
476 		/*
477 		 * This is not correct. It is 16, 32 or 64 bytes depending on
478 		 * register D31:F0:ADh bits 5:4.
479 		 *
480 		 * But this gets us at least _part_ of it.
481 		 */
482 		size = 16;
483 	} else {
484 		size = 128;
485 	}
486 	base &= ~(size-1);
487 
488 	/* Just print it out for now. We should reserve it after more debugging */
489 	dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
490 }
491 
quirk_ich6_lpc(struct pci_dev * dev)492 static void __devinit quirk_ich6_lpc(struct pci_dev *dev)
493 {
494 	/* Shared ACPI/GPIO decode with all ICH6+ */
495 	ich6_lpc_acpi_gpio(dev);
496 
497 	/* ICH6-specific generic IO decode */
498 	ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
499 	ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
500 }
501 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
502 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
503 
ich7_lpc_generic_decode(struct pci_dev * dev,unsigned reg,const char * name)504 static void __devinit ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name)
505 {
506 	u32 val;
507 	u32 mask, base;
508 
509 	pci_read_config_dword(dev, reg, &val);
510 
511 	/* Enabled? */
512 	if (!(val & 1))
513 		return;
514 
515 	/*
516 	 * IO base in bits 15:2, mask in bits 23:18, both
517 	 * are dword-based
518 	 */
519 	base = val & 0xfffc;
520 	mask = (val >> 16) & 0xfc;
521 	mask |= 3;
522 
523 	/* Just print it out for now. We should reserve it after more debugging */
524 	dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
525 }
526 
527 /* ICH7-10 has the same common LPC generic IO decode registers */
quirk_ich7_lpc(struct pci_dev * dev)528 static void __devinit quirk_ich7_lpc(struct pci_dev *dev)
529 {
530 	/* We share the common ACPI/DPIO decode with ICH6 */
531 	ich6_lpc_acpi_gpio(dev);
532 
533 	/* And have 4 ICH7+ generic decodes */
534 	ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
535 	ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
536 	ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
537 	ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
538 }
539 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
540 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
541 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
542 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
543 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
544 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
545 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
546 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
547 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
548 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
549 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
550 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
551 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
552 
553 /*
554  * VIA ACPI: One IO region pointed to by longword at
555  *	0x48 or 0x20 (256 bytes of ACPI registers)
556  */
quirk_vt82c586_acpi(struct pci_dev * dev)557 static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
558 {
559 	u32 region;
560 
561 	if (dev->revision & 0x10) {
562 		pci_read_config_dword(dev, 0x48, &region);
563 		region &= PCI_BASE_ADDRESS_IO_MASK;
564 		quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
565 	}
566 }
567 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_vt82c586_acpi);
568 
569 /*
570  * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
571  *	0x48 (256 bytes of ACPI registers)
572  *	0x70 (128 bytes of hardware monitoring register)
573  *	0x90 (16 bytes of SMB registers)
574  */
quirk_vt82c686_acpi(struct pci_dev * dev)575 static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
576 {
577 	u16 hm;
578 	u32 smb;
579 
580 	quirk_vt82c586_acpi(dev);
581 
582 	pci_read_config_word(dev, 0x70, &hm);
583 	hm &= PCI_BASE_ADDRESS_IO_MASK;
584 	quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
585 
586 	pci_read_config_dword(dev, 0x90, &smb);
587 	smb &= PCI_BASE_ADDRESS_IO_MASK;
588 	quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
589 }
590 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_vt82c686_acpi);
591 
592 /*
593  * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
594  *	0x88 (128 bytes of power management registers)
595  *	0xd0 (16 bytes of SMB registers)
596  */
quirk_vt8235_acpi(struct pci_dev * dev)597 static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
598 {
599 	u16 pm, smb;
600 
601 	pci_read_config_word(dev, 0x88, &pm);
602 	pm &= PCI_BASE_ADDRESS_IO_MASK;
603 	quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
604 
605 	pci_read_config_word(dev, 0xd0, &smb);
606 	smb &= PCI_BASE_ADDRESS_IO_MASK;
607 	quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
608 }
609 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8235,	quirk_vt8235_acpi);
610 
611 
612 #ifdef CONFIG_X86_IO_APIC
613 
614 #include <asm/io_apic.h>
615 
616 /*
617  * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
618  * devices to the external APIC.
619  *
620  * TODO: When we have device-specific interrupt routers,
621  * this code will go away from quirks.
622  */
quirk_via_ioapic(struct pci_dev * dev)623 static void quirk_via_ioapic(struct pci_dev *dev)
624 {
625 	u8 tmp;
626 
627 	if (nr_ioapics < 1)
628 		tmp = 0;    /* nothing routed to external APIC */
629 	else
630 		tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
631 
632 	dev_info(&dev->dev, "%sbling VIA external APIC routing\n",
633 	       tmp == 0 ? "Disa" : "Ena");
634 
635 	/* Offset 0x58: External APIC IRQ output control */
636 	pci_write_config_byte (dev, 0x58, tmp);
637 }
638 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_ioapic);
639 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_ioapic);
640 
641 /*
642  * VIA 8237: Some BIOSs don't set the 'Bypass APIC De-Assert Message' Bit.
643  * This leads to doubled level interrupt rates.
644  * Set this bit to get rid of cycle wastage.
645  * Otherwise uncritical.
646  */
quirk_via_vt8237_bypass_apic_deassert(struct pci_dev * dev)647 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
648 {
649 	u8 misc_control2;
650 #define BYPASS_APIC_DEASSERT 8
651 
652 	pci_read_config_byte(dev, 0x5B, &misc_control2);
653 	if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
654 		dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
655 		pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
656 	}
657 }
658 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_vt8237_bypass_apic_deassert);
659 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_vt8237_bypass_apic_deassert);
660 
661 /*
662  * The AMD io apic can hang the box when an apic irq is masked.
663  * We check all revs >= B0 (yet not in the pre production!) as the bug
664  * is currently marked NoFix
665  *
666  * We have multiple reports of hangs with this chipset that went away with
667  * noapic specified. For the moment we assume it's the erratum. We may be wrong
668  * of course. However the advice is demonstrably good even if so..
669  */
quirk_amd_ioapic(struct pci_dev * dev)670 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
671 {
672 	if (dev->revision >= 0x02) {
673 		dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
674 		dev_warn(&dev->dev, "        : booting with the \"noapic\" option\n");
675 	}
676 }
677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_VIPER_7410,	quirk_amd_ioapic);
678 
quirk_ioapic_rmw(struct pci_dev * dev)679 static void __init quirk_ioapic_rmw(struct pci_dev *dev)
680 {
681 	if (dev->devfn == 0 && dev->bus->number == 0)
682 		sis_apic_bug = 1;
683 }
684 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_ANY_ID,			quirk_ioapic_rmw);
685 #endif /* CONFIG_X86_IO_APIC */
686 
687 /*
688  * Some settings of MMRBC can lead to data corruption so block changes.
689  * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
690  */
quirk_amd_8131_mmrbc(struct pci_dev * dev)691 static void __init quirk_amd_8131_mmrbc(struct pci_dev *dev)
692 {
693 	if (dev->subordinate && dev->revision <= 0x12) {
694 		dev_info(&dev->dev, "AMD8131 rev %x detected; "
695 			"disabling PCI-X MMRBC\n", dev->revision);
696 		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
697 	}
698 }
699 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
700 
701 /*
702  * FIXME: it is questionable that quirk_via_acpi
703  * is needed.  It shows up as an ISA bridge, and does not
704  * support the PCI_INTERRUPT_LINE register at all.  Therefore
705  * it seems like setting the pci_dev's 'irq' to the
706  * value of the ACPI SCI interrupt is only done for convenience.
707  *	-jgarzik
708  */
quirk_via_acpi(struct pci_dev * d)709 static void __devinit quirk_via_acpi(struct pci_dev *d)
710 {
711 	/*
712 	 * VIA ACPI device: SCI IRQ line in PCI config byte 0x42
713 	 */
714 	u8 irq;
715 	pci_read_config_byte(d, 0x42, &irq);
716 	irq &= 0xf;
717 	if (irq && (irq != 2))
718 		d->irq = irq;
719 }
720 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_via_acpi);
721 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_via_acpi);
722 
723 
724 /*
725  *	VIA bridges which have VLink
726  */
727 
728 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
729 
quirk_via_bridge(struct pci_dev * dev)730 static void quirk_via_bridge(struct pci_dev *dev)
731 {
732 	/* See what bridge we have and find the device ranges */
733 	switch (dev->device) {
734 	case PCI_DEVICE_ID_VIA_82C686:
735 		/* The VT82C686 is special, it attaches to PCI and can have
736 		   any device number. All its subdevices are functions of
737 		   that single device. */
738 		via_vlink_dev_lo = PCI_SLOT(dev->devfn);
739 		via_vlink_dev_hi = PCI_SLOT(dev->devfn);
740 		break;
741 	case PCI_DEVICE_ID_VIA_8237:
742 	case PCI_DEVICE_ID_VIA_8237A:
743 		via_vlink_dev_lo = 15;
744 		break;
745 	case PCI_DEVICE_ID_VIA_8235:
746 		via_vlink_dev_lo = 16;
747 		break;
748 	case PCI_DEVICE_ID_VIA_8231:
749 	case PCI_DEVICE_ID_VIA_8233_0:
750 	case PCI_DEVICE_ID_VIA_8233A:
751 	case PCI_DEVICE_ID_VIA_8233C_0:
752 		via_vlink_dev_lo = 17;
753 		break;
754 	}
755 }
756 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686,	quirk_via_bridge);
757 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8231,		quirk_via_bridge);
758 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233_0,	quirk_via_bridge);
759 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233A,	quirk_via_bridge);
760 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8233C_0,	quirk_via_bridge);
761 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8235,		quirk_via_bridge);
762 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_bridge);
763 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237A,	quirk_via_bridge);
764 
765 /**
766  *	quirk_via_vlink		-	VIA VLink IRQ number update
767  *	@dev: PCI device
768  *
769  *	If the device we are dealing with is on a PIC IRQ we need to
770  *	ensure that the IRQ line register which usually is not relevant
771  *	for PCI cards, is actually written so that interrupts get sent
772  *	to the right place.
773  *	We only do this on systems where a VIA south bridge was detected,
774  *	and only for VIA devices on the motherboard (see quirk_via_bridge
775  *	above).
776  */
777 
quirk_via_vlink(struct pci_dev * dev)778 static void quirk_via_vlink(struct pci_dev *dev)
779 {
780 	u8 irq, new_irq;
781 
782 	/* Check if we have VLink at all */
783 	if (via_vlink_dev_lo == -1)
784 		return;
785 
786 	new_irq = dev->irq;
787 
788 	/* Don't quirk interrupts outside the legacy IRQ range */
789 	if (!new_irq || new_irq > 15)
790 		return;
791 
792 	/* Internal device ? */
793 	if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
794 	    PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
795 		return;
796 
797 	/* This is an internal VLink device on a PIC interrupt. The BIOS
798 	   ought to have set this but may not have, so we redo it */
799 
800 	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
801 	if (new_irq != irq) {
802 		dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n",
803 			irq, new_irq);
804 		udelay(15);	/* unknown if delay really needed */
805 		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
806 	}
807 }
808 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
809 
810 /*
811  * VIA VT82C598 has its device ID settable and many BIOSes
812  * set it to the ID of VT82C597 for backward compatibility.
813  * We need to switch it off to be able to recognize the real
814  * type of the chip.
815  */
quirk_vt82c598_id(struct pci_dev * dev)816 static void __devinit quirk_vt82c598_id(struct pci_dev *dev)
817 {
818 	pci_write_config_byte(dev, 0xfc, 0);
819 	pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
820 }
821 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C597_0,	quirk_vt82c598_id);
822 
823 /*
824  * CardBus controllers have a legacy base address that enables them
825  * to respond as i82365 pcmcia controllers.  We don't want them to
826  * do this even if the Linux CardBus driver is not loaded, because
827  * the Linux i82365 driver does not (and should not) handle CardBus.
828  */
quirk_cardbus_legacy(struct pci_dev * dev)829 static void quirk_cardbus_legacy(struct pci_dev *dev)
830 {
831 	if ((PCI_CLASS_BRIDGE_CARDBUS << 8) ^ dev->class)
832 		return;
833 	pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
834 }
835 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
836 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_cardbus_legacy);
837 
838 /*
839  * Following the PCI ordering rules is optional on the AMD762. I'm not
840  * sure what the designers were smoking but let's not inhale...
841  *
842  * To be fair to AMD, it follows the spec by default, its BIOS people
843  * who turn it off!
844  */
quirk_amd_ordering(struct pci_dev * dev)845 static void quirk_amd_ordering(struct pci_dev *dev)
846 {
847 	u32 pcic;
848 	pci_read_config_dword(dev, 0x4C, &pcic);
849 	if ((pcic&6)!=6) {
850 		pcic |= 6;
851 		dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
852 		pci_write_config_dword(dev, 0x4C, pcic);
853 		pci_read_config_dword(dev, 0x84, &pcic);
854 		pcic |= (1<<23);	/* Required in this mode */
855 		pci_write_config_dword(dev, 0x84, pcic);
856 	}
857 }
858 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
859 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
860 
861 /*
862  *	DreamWorks provided workaround for Dunord I-3000 problem
863  *
864  *	This card decodes and responds to addresses not apparently
865  *	assigned to it. We force a larger allocation to ensure that
866  *	nothing gets put too close to it.
867  */
quirk_dunord(struct pci_dev * dev)868 static void __devinit quirk_dunord ( struct pci_dev * dev )
869 {
870 	struct resource *r = &dev->resource [1];
871 	r->start = 0;
872 	r->end = 0xffffff;
873 }
874 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD,	PCI_DEVICE_ID_DUNORD_I3000,	quirk_dunord);
875 
876 /*
877  * i82380FB mobile docking controller: its PCI-to-PCI bridge
878  * is subtractive decoding (transparent), and does indicate this
879  * in the ProgIf. Unfortunately, the ProgIf value is wrong - 0x80
880  * instead of 0x01.
881  */
quirk_transparent_bridge(struct pci_dev * dev)882 static void __devinit quirk_transparent_bridge(struct pci_dev *dev)
883 {
884 	dev->transparent = 1;
885 }
886 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82380FB,	quirk_transparent_bridge);
887 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA,	0x605,	quirk_transparent_bridge);
888 
889 /*
890  * Common misconfiguration of the MediaGX/Geode PCI master that will
891  * reduce PCI bandwidth from 70MB/s to 25MB/s.  See the GXM/GXLV/GX1
892  * datasheets found at http://www.national.com/ds/GX for info on what
893  * these bits do.  <christer@weinigel.se>
894  */
quirk_mediagx_master(struct pci_dev * dev)895 static void quirk_mediagx_master(struct pci_dev *dev)
896 {
897 	u8 reg;
898 	pci_read_config_byte(dev, 0x41, &reg);
899 	if (reg & 2) {
900 		reg &= ~2;
901 		dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg);
902                 pci_write_config_byte(dev, 0x41, reg);
903 	}
904 }
905 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
906 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
907 
908 /*
909  *	Ensure C0 rev restreaming is off. This is normally done by
910  *	the BIOS but in the odd case it is not the results are corruption
911  *	hence the presence of a Linux check
912  */
quirk_disable_pxb(struct pci_dev * pdev)913 static void quirk_disable_pxb(struct pci_dev *pdev)
914 {
915 	u16 config;
916 
917 	if (pdev->revision != 0x04)		/* Only C0 requires this */
918 		return;
919 	pci_read_config_word(pdev, 0x40, &config);
920 	if (config & (1<<6)) {
921 		config &= ~(1<<6);
922 		pci_write_config_word(pdev, 0x40, config);
923 		dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n");
924 	}
925 }
926 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454NX,	quirk_disable_pxb);
927 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454NX,	quirk_disable_pxb);
928 
quirk_amd_ide_mode(struct pci_dev * pdev)929 static void __devinit quirk_amd_ide_mode(struct pci_dev *pdev)
930 {
931 	/* set sb600/sb700/sb800 sata to ahci mode */
932 	u8 tmp;
933 
934 	pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
935 	if (tmp == 0x01) {
936 		pci_read_config_byte(pdev, 0x40, &tmp);
937 		pci_write_config_byte(pdev, 0x40, tmp|1);
938 		pci_write_config_byte(pdev, 0x9, 1);
939 		pci_write_config_byte(pdev, 0xa, 6);
940 		pci_write_config_byte(pdev, 0x40, tmp);
941 
942 		pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
943 		dev_info(&pdev->dev, "set SATA to AHCI mode\n");
944 	}
945 }
946 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
947 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
948 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
949 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
950 
951 /*
952  *	Serverworks CSB5 IDE does not fully support native mode
953  */
quirk_svwks_csb5ide(struct pci_dev * pdev)954 static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
955 {
956 	u8 prog;
957 	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
958 	if (prog & 5) {
959 		prog &= ~5;
960 		pdev->class &= ~5;
961 		pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
962 		/* PCI layer will sort out resources */
963 	}
964 }
965 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
966 
967 /*
968  *	Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
969  */
quirk_ide_samemode(struct pci_dev * pdev)970 static void __init quirk_ide_samemode(struct pci_dev *pdev)
971 {
972 	u8 prog;
973 
974 	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
975 
976 	if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
977 		dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n");
978 		prog &= ~5;
979 		pdev->class &= ~5;
980 		pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
981 	}
982 }
983 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
984 
985 /*
986  * Some ATA devices break if put into D3
987  */
988 
quirk_no_ata_d3(struct pci_dev * pdev)989 static void __devinit quirk_no_ata_d3(struct pci_dev *pdev)
990 {
991 	/* Quirk the legacy ATA devices only. The AHCI ones are ok */
992 	if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE)
993 		pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
994 }
995 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3);
996 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3);
997 
998 /* This was originally an Alpha specific thing, but it really fits here.
999  * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1000  */
quirk_eisa_bridge(struct pci_dev * dev)1001 static void __init quirk_eisa_bridge(struct pci_dev *dev)
1002 {
1003 	dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1004 }
1005 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82375,	quirk_eisa_bridge);
1006 
1007 
1008 /*
1009  * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1010  * is not activated. The myth is that Asus said that they do not want the
1011  * users to be irritated by just another PCI Device in the Win98 device
1012  * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1013  * package 2.7.0 for details)
1014  *
1015  * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1016  * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1017  * becomes necessary to do this tweak in two steps -- the chosen trigger
1018  * is either the Host bridge (preferred) or on-board VGA controller.
1019  *
1020  * Note that we used to unhide the SMBus that way on Toshiba laptops
1021  * (Satellite A40 and Tecra M2) but then found that the thermal management
1022  * was done by SMM code, which could cause unsynchronized concurrent
1023  * accesses to the SMBus registers, with potentially bad effects. Thus you
1024  * should be very careful when adding new entries: if SMM is accessing the
1025  * Intel SMBus, this is a very good reason to leave it hidden.
1026  *
1027  * Likewise, many recent laptops use ACPI for thermal management. If the
1028  * ACPI DSDT code accesses the SMBus, then Linux should not access it
1029  * natively, and keeping the SMBus hidden is the right thing to do. If you
1030  * are about to add an entry in the table below, please first disassemble
1031  * the DSDT and double-check that there is no code accessing the SMBus.
1032  */
1033 static int asus_hides_smbus;
1034 
asus_hides_smbus_hostbridge(struct pci_dev * dev)1035 static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
1036 {
1037 	if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1038 		if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1039 			switch(dev->subsystem_device) {
1040 			case 0x8025: /* P4B-LX */
1041 			case 0x8070: /* P4B */
1042 			case 0x8088: /* P4B533 */
1043 			case 0x1626: /* L3C notebook */
1044 				asus_hides_smbus = 1;
1045 			}
1046 		else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1047 			switch(dev->subsystem_device) {
1048 			case 0x80b1: /* P4GE-V */
1049 			case 0x80b2: /* P4PE */
1050 			case 0x8093: /* P4B533-V */
1051 				asus_hides_smbus = 1;
1052 			}
1053 		else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1054 			switch(dev->subsystem_device) {
1055 			case 0x8030: /* P4T533 */
1056 				asus_hides_smbus = 1;
1057 			}
1058 		else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1059 			switch (dev->subsystem_device) {
1060 			case 0x8070: /* P4G8X Deluxe */
1061 				asus_hides_smbus = 1;
1062 			}
1063 		else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1064 			switch (dev->subsystem_device) {
1065 			case 0x80c9: /* PU-DLS */
1066 				asus_hides_smbus = 1;
1067 			}
1068 		else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1069 			switch (dev->subsystem_device) {
1070 			case 0x1751: /* M2N notebook */
1071 			case 0x1821: /* M5N notebook */
1072 				asus_hides_smbus = 1;
1073 			}
1074 		else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1075 			switch (dev->subsystem_device) {
1076 			case 0x184b: /* W1N notebook */
1077 			case 0x186a: /* M6Ne notebook */
1078 				asus_hides_smbus = 1;
1079 			}
1080 		else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1081 			switch (dev->subsystem_device) {
1082 			case 0x80f2: /* P4P800-X */
1083 				asus_hides_smbus = 1;
1084 			}
1085 		else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1086 			switch (dev->subsystem_device) {
1087 			case 0x1882: /* M6V notebook */
1088 			case 0x1977: /* A6VA notebook */
1089 				asus_hides_smbus = 1;
1090 			}
1091 	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1092 		if (dev->device ==  PCI_DEVICE_ID_INTEL_82855PM_HB)
1093 			switch(dev->subsystem_device) {
1094 			case 0x088C: /* HP Compaq nc8000 */
1095 			case 0x0890: /* HP Compaq nc6000 */
1096 				asus_hides_smbus = 1;
1097 			}
1098 		else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1099 			switch (dev->subsystem_device) {
1100 			case 0x12bc: /* HP D330L */
1101 			case 0x12bd: /* HP D530 */
1102 				asus_hides_smbus = 1;
1103 			}
1104 		else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1105 			switch (dev->subsystem_device) {
1106 			case 0x12bf: /* HP xw4100 */
1107 				asus_hides_smbus = 1;
1108 			}
1109        } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1110                if (dev->device ==  PCI_DEVICE_ID_INTEL_82855PM_HB)
1111                        switch(dev->subsystem_device) {
1112                        case 0xC00C: /* Samsung P35 notebook */
1113                                asus_hides_smbus = 1;
1114                        }
1115 	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1116 		if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1117 			switch(dev->subsystem_device) {
1118 			case 0x0058: /* Compaq Evo N620c */
1119 				asus_hides_smbus = 1;
1120 			}
1121 		else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1122 			switch(dev->subsystem_device) {
1123 			case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1124 				/* Motherboard doesn't have Host bridge
1125 				 * subvendor/subdevice IDs, therefore checking
1126 				 * its on-board VGA controller */
1127 				asus_hides_smbus = 1;
1128 			}
1129 		else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_IG)
1130 			switch(dev->subsystem_device) {
1131 			case 0x00b8: /* Compaq Evo D510 CMT */
1132 			case 0x00b9: /* Compaq Evo D510 SFF */
1133 				asus_hides_smbus = 1;
1134 			}
1135 		else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1136 			switch (dev->subsystem_device) {
1137 			case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1138 				/* Motherboard doesn't have host bridge
1139 				 * subvendor/subdevice IDs, therefore checking
1140 				 * its on-board VGA controller */
1141 				asus_hides_smbus = 1;
1142 			}
1143 	}
1144 }
1145 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82845_HB,	asus_hides_smbus_hostbridge);
1146 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82845G_HB,	asus_hides_smbus_hostbridge);
1147 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82850_HB,	asus_hides_smbus_hostbridge);
1148 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82865_HB,	asus_hides_smbus_hostbridge);
1149 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82875_HB,	asus_hides_smbus_hostbridge);
1150 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_7205_0,	asus_hides_smbus_hostbridge);
1151 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7501_MCH,	asus_hides_smbus_hostbridge);
1152 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82855PM_HB,	asus_hides_smbus_hostbridge);
1153 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82855GM_HB,	asus_hides_smbus_hostbridge);
1154 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1155 
1156 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82810_IG3,	asus_hides_smbus_hostbridge);
1157 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82845G_IG,	asus_hides_smbus_hostbridge);
1158 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82815_CGC,	asus_hides_smbus_hostbridge);
1159 
asus_hides_smbus_lpc(struct pci_dev * dev)1160 static void asus_hides_smbus_lpc(struct pci_dev *dev)
1161 {
1162 	u16 val;
1163 
1164 	if (likely(!asus_hides_smbus))
1165 		return;
1166 
1167 	pci_read_config_word(dev, 0xF2, &val);
1168 	if (val & 0x8) {
1169 		pci_write_config_word(dev, 0xF2, val & (~0x8));
1170 		pci_read_config_word(dev, 0xF2, &val);
1171 		if (val & 0x8)
1172 			dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val);
1173 		else
1174 			dev_info(&dev->dev, "Enabled i801 SMBus device\n");
1175 	}
1176 }
1177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801AA_0,	asus_hides_smbus_lpc);
1178 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_0,	asus_hides_smbus_lpc);
1179 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801BA_0,	asus_hides_smbus_lpc);
1180 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_0,	asus_hides_smbus_lpc);
1181 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_12,	asus_hides_smbus_lpc);
1182 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_12,	asus_hides_smbus_lpc);
1183 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801EB_0,	asus_hides_smbus_lpc);
1184 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801AA_0,	asus_hides_smbus_lpc);
1185 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_0,	asus_hides_smbus_lpc);
1186 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801BA_0,	asus_hides_smbus_lpc);
1187 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_0,	asus_hides_smbus_lpc);
1188 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801CA_12,	asus_hides_smbus_lpc);
1189 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801DB_12,	asus_hides_smbus_lpc);
1190 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82801EB_0,	asus_hides_smbus_lpc);
1191 
1192 /* It appears we just have one such device. If not, we have a warning */
1193 static void __iomem *asus_rcba_base;
asus_hides_smbus_lpc_ich6_suspend(struct pci_dev * dev)1194 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1195 {
1196 	u32 rcba;
1197 
1198 	if (likely(!asus_hides_smbus))
1199 		return;
1200 	WARN_ON(asus_rcba_base);
1201 
1202 	pci_read_config_dword(dev, 0xF0, &rcba);
1203 	/* use bits 31:14, 16 kB aligned */
1204 	asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1205 	if (asus_rcba_base == NULL)
1206 		return;
1207 }
1208 
asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev * dev)1209 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1210 {
1211 	u32 val;
1212 
1213 	if (likely(!asus_hides_smbus || !asus_rcba_base))
1214 		return;
1215 	/* read the Function Disable register, dword mode only */
1216 	val = readl(asus_rcba_base + 0x3418);
1217 	writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); /* enable the SMBus device */
1218 }
1219 
asus_hides_smbus_lpc_ich6_resume(struct pci_dev * dev)1220 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1221 {
1222 	if (likely(!asus_hides_smbus || !asus_rcba_base))
1223 		return;
1224 	iounmap(asus_rcba_base);
1225 	asus_rcba_base = NULL;
1226 	dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n");
1227 }
1228 
asus_hides_smbus_lpc_ich6(struct pci_dev * dev)1229 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1230 {
1231 	asus_hides_smbus_lpc_ich6_suspend(dev);
1232 	asus_hides_smbus_lpc_ich6_resume_early(dev);
1233 	asus_hides_smbus_lpc_ich6_resume(dev);
1234 }
1235 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6);
1236 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_suspend);
1237 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_resume);
1238 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ICH6_1,	asus_hides_smbus_lpc_ich6_resume_early);
1239 
1240 /*
1241  * SiS 96x south bridge: BIOS typically hides SMBus device...
1242  */
quirk_sis_96x_smbus(struct pci_dev * dev)1243 static void quirk_sis_96x_smbus(struct pci_dev *dev)
1244 {
1245 	u8 val = 0;
1246 	pci_read_config_byte(dev, 0x77, &val);
1247 	if (val & 0x10) {
1248 		dev_info(&dev->dev, "Enabling SiS 96x SMBus\n");
1249 		pci_write_config_byte(dev, 0x77, val & ~0x10);
1250 	}
1251 }
1252 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus);
1253 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus);
1254 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_963,		quirk_sis_96x_smbus);
1255 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_LPC,		quirk_sis_96x_smbus);
1256 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus);
1257 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus);
1258 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_963,		quirk_sis_96x_smbus);
1259 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_LPC,		quirk_sis_96x_smbus);
1260 
1261 /*
1262  * ... This is further complicated by the fact that some SiS96x south
1263  * bridges pretend to be 85C503/5513 instead.  In that case see if we
1264  * spotted a compatible north bridge to make sure.
1265  * (pci_find_device doesn't work yet)
1266  *
1267  * We can also enable the sis96x bit in the discovery register..
1268  */
1269 #define SIS_DETECT_REGISTER 0x40
1270 
quirk_sis_503(struct pci_dev * dev)1271 static void quirk_sis_503(struct pci_dev *dev)
1272 {
1273 	u8 reg;
1274 	u16 devid;
1275 
1276 	pci_read_config_byte(dev, SIS_DETECT_REGISTER, &reg);
1277 	pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1278 	pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1279 	if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1280 		pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1281 		return;
1282 	}
1283 
1284 	/*
1285 	 * Ok, it now shows up as a 96x.. run the 96x quirk by
1286 	 * hand in case it has already been processed.
1287 	 * (depends on link order, which is apparently not guaranteed)
1288 	 */
1289 	dev->device = devid;
1290 	quirk_sis_96x_smbus(dev);
1291 }
1292 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503);
1293 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503);
1294 
1295 
1296 /*
1297  * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1298  * and MC97 modem controller are disabled when a second PCI soundcard is
1299  * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1300  * -- bjd
1301  */
asus_hides_ac97_lpc(struct pci_dev * dev)1302 static void asus_hides_ac97_lpc(struct pci_dev *dev)
1303 {
1304 	u8 val;
1305 	int asus_hides_ac97 = 0;
1306 
1307 	if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1308 		if (dev->device == PCI_DEVICE_ID_VIA_8237)
1309 			asus_hides_ac97 = 1;
1310 	}
1311 
1312 	if (!asus_hides_ac97)
1313 		return;
1314 
1315 	pci_read_config_byte(dev, 0x50, &val);
1316 	if (val & 0xc0) {
1317 		pci_write_config_byte(dev, 0x50, val & (~0xc0));
1318 		pci_read_config_byte(dev, 0x50, &val);
1319 		if (val & 0xc0)
1320 			dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);
1321 		else
1322 			dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n");
1323 	}
1324 }
1325 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1326 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1327 
1328 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1329 
1330 /*
1331  *	If we are using libata we can drive this chip properly but must
1332  *	do this early on to make the additional device appear during
1333  *	the PCI scanning.
1334  */
quirk_jmicron_ata(struct pci_dev * pdev)1335 static void quirk_jmicron_ata(struct pci_dev *pdev)
1336 {
1337 	u32 conf1, conf5, class;
1338 	u8 hdr;
1339 
1340 	/* Only poke fn 0 */
1341 	if (PCI_FUNC(pdev->devfn))
1342 		return;
1343 
1344 	pci_read_config_dword(pdev, 0x40, &conf1);
1345 	pci_read_config_dword(pdev, 0x80, &conf5);
1346 
1347 	conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1348 	conf5 &= ~(1 << 24);  /* Clear bit 24 */
1349 
1350 	switch (pdev->device) {
1351 	case PCI_DEVICE_ID_JMICRON_JMB360:
1352 		/* The controller should be in single function ahci mode */
1353 		conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1354 		break;
1355 
1356 	case PCI_DEVICE_ID_JMICRON_JMB365:
1357 	case PCI_DEVICE_ID_JMICRON_JMB366:
1358 		/* Redirect IDE second PATA port to the right spot */
1359 		conf5 |= (1 << 24);
1360 		/* Fall through */
1361 	case PCI_DEVICE_ID_JMICRON_JMB361:
1362 	case PCI_DEVICE_ID_JMICRON_JMB363:
1363 		/* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1364 		/* Set the class codes correctly and then direct IDE 0 */
1365 		conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1366 		break;
1367 
1368 	case PCI_DEVICE_ID_JMICRON_JMB368:
1369 		/* The controller should be in single function IDE mode */
1370 		conf1 |= 0x00C00000; /* Set 22, 23 */
1371 		break;
1372 	}
1373 
1374 	pci_write_config_dword(pdev, 0x40, conf1);
1375 	pci_write_config_dword(pdev, 0x80, conf5);
1376 
1377 	/* Update pdev accordingly */
1378 	pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1379 	pdev->hdr_type = hdr & 0x7f;
1380 	pdev->multifunction = !!(hdr & 0x80);
1381 
1382 	pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1383 	pdev->class = class >> 8;
1384 }
1385 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1386 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1387 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1388 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1389 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1390 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1391 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1392 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1393 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1394 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1395 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1396 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1397 
1398 #endif
1399 
1400 #ifdef CONFIG_X86_IO_APIC
quirk_alder_ioapic(struct pci_dev * pdev)1401 static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1402 {
1403 	int i;
1404 
1405 	if ((pdev->class >> 8) != 0xff00)
1406 		return;
1407 
1408 	/* the first BAR is the location of the IO APIC...we must
1409 	 * not touch this (and it's already covered by the fixmap), so
1410 	 * forcibly insert it into the resource tree */
1411 	if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1412 		insert_resource(&iomem_resource, &pdev->resource[0]);
1413 
1414 	/* The next five BARs all seem to be rubbish, so just clean
1415 	 * them out */
1416 	for (i=1; i < 6; i++) {
1417 		memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1418 	}
1419 
1420 }
1421 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_EESSC,	quirk_alder_ioapic);
1422 #endif
1423 
quirk_pcie_mch(struct pci_dev * pdev)1424 static void __devinit quirk_pcie_mch(struct pci_dev *pdev)
1425 {
1426 	pcie_mch_quirk = 1;
1427 }
1428 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7520_MCH,	quirk_pcie_mch);
1429 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7320_MCH,	quirk_pcie_mch);
1430 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_E7525_MCH,	quirk_pcie_mch);
1431 
1432 
1433 /*
1434  * It's possible for the MSI to get corrupted if shpc and acpi
1435  * are used together on certain PXH-based systems.
1436  */
quirk_pcie_pxh(struct pci_dev * dev)1437 static void __devinit quirk_pcie_pxh(struct pci_dev *dev)
1438 {
1439 	pci_msi_off(dev);
1440 	dev->no_msi = 1;
1441 	dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n");
1442 }
1443 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHD_0,	quirk_pcie_pxh);
1444 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHD_1,	quirk_pcie_pxh);
1445 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_pcie_pxh);
1446 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_pcie_pxh);
1447 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_pcie_pxh);
1448 
1449 /*
1450  * Some Intel PCI Express chipsets have trouble with downstream
1451  * device power management.
1452  */
quirk_intel_pcie_pm(struct pci_dev * dev)1453 static void quirk_intel_pcie_pm(struct pci_dev * dev)
1454 {
1455 	pci_pm_d3_delay = 120;
1456 	dev->no_d1d2 = 1;
1457 }
1458 
1459 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e2, quirk_intel_pcie_pm);
1460 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e3, quirk_intel_pcie_pm);
1461 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e4, quirk_intel_pcie_pm);
1462 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e5, quirk_intel_pcie_pm);
1463 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e6, quirk_intel_pcie_pm);
1464 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25e7, quirk_intel_pcie_pm);
1465 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f7, quirk_intel_pcie_pm);
1466 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f8, quirk_intel_pcie_pm);
1467 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25f9, quirk_intel_pcie_pm);
1468 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x25fa, quirk_intel_pcie_pm);
1469 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2601, quirk_intel_pcie_pm);
1470 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2602, quirk_intel_pcie_pm);
1471 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2603, quirk_intel_pcie_pm);
1472 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2604, quirk_intel_pcie_pm);
1473 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2605, quirk_intel_pcie_pm);
1474 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2606, quirk_intel_pcie_pm);
1475 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2607, quirk_intel_pcie_pm);
1476 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2608, quirk_intel_pcie_pm);
1477 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x2609, quirk_intel_pcie_pm);
1478 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260a, quirk_intel_pcie_pm);
1479 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260b, quirk_intel_pcie_pm);
1480 
1481 #ifdef CONFIG_X86_IO_APIC
1482 /*
1483  * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1484  * remap the original interrupt in the linux kernel to the boot interrupt, so
1485  * that a PCI device's interrupt handler is installed on the boot interrupt
1486  * line instead.
1487  */
quirk_reroute_to_boot_interrupts_intel(struct pci_dev * dev)1488 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1489 {
1490 	if (noioapicquirk || noioapicreroute)
1491 		return;
1492 
1493 	dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1494 
1495 	printk(KERN_INFO "PCI quirk: reroute interrupts for 0x%04x:0x%04x\n",
1496 			dev->vendor, dev->device);
1497 	return;
1498 }
1499 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_0,	quirk_reroute_to_boot_interrupts_intel);
1500 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_1,	quirk_reroute_to_boot_interrupts_intel);
1501 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ESB2_0,	quirk_reroute_to_boot_interrupts_intel);
1502 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_reroute_to_boot_interrupts_intel);
1503 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_reroute_to_boot_interrupts_intel);
1504 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_reroute_to_boot_interrupts_intel);
1505 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_0,	quirk_reroute_to_boot_interrupts_intel);
1506 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_1,	quirk_reroute_to_boot_interrupts_intel);
1507 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_0,	quirk_reroute_to_boot_interrupts_intel);
1508 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80333_1,	quirk_reroute_to_boot_interrupts_intel);
1509 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_ESB2_0,	quirk_reroute_to_boot_interrupts_intel);
1510 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_0,	quirk_reroute_to_boot_interrupts_intel);
1511 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_reroute_to_boot_interrupts_intel);
1512 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXHV,	quirk_reroute_to_boot_interrupts_intel);
1513 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_0,	quirk_reroute_to_boot_interrupts_intel);
1514 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_80332_1,	quirk_reroute_to_boot_interrupts_intel);
1515 
1516 /*
1517  * On some chipsets we can disable the generation of legacy INTx boot
1518  * interrupts.
1519  */
1520 
1521 /*
1522  * IO-APIC1 on 6300ESB generates boot interrupts, see intel order no
1523  * 300641-004US, section 5.7.3.
1524  */
1525 #define INTEL_6300_IOAPIC_ABAR		0x40
1526 #define INTEL_6300_DISABLE_BOOT_IRQ	(1<<14)
1527 
quirk_disable_intel_boot_interrupt(struct pci_dev * dev)1528 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1529 {
1530 	u16 pci_config_word;
1531 
1532 	if (noioapicquirk)
1533 		return;
1534 
1535 	pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1536 	pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1537 	pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1538 
1539 	printk(KERN_INFO "disabled boot interrupt on device 0x%04x:0x%04x\n",
1540 		dev->vendor, dev->device);
1541 }
1542 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10, 	quirk_disable_intel_boot_interrupt);
1543 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10, 	quirk_disable_intel_boot_interrupt);
1544 
1545 /*
1546  * disable boot interrupts on HT-1000
1547  */
1548 #define BC_HT1000_FEATURE_REG		0x64
1549 #define BC_HT1000_PIC_REGS_ENABLE	(1<<0)
1550 #define BC_HT1000_MAP_IDX		0xC00
1551 #define BC_HT1000_MAP_DATA		0xC01
1552 
quirk_disable_broadcom_boot_interrupt(struct pci_dev * dev)1553 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1554 {
1555 	u32 pci_config_dword;
1556 	u8 irq;
1557 
1558 	if (noioapicquirk)
1559 		return;
1560 
1561 	pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1562 	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1563 			BC_HT1000_PIC_REGS_ENABLE);
1564 
1565 	for (irq = 0x10; irq < 0x10 + 32; irq++) {
1566 		outb(irq, BC_HT1000_MAP_IDX);
1567 		outb(0x00, BC_HT1000_MAP_DATA);
1568 	}
1569 
1570 	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1571 
1572 	printk(KERN_INFO "disabled boot interrupts on PCI device"
1573 			"0x%04x:0x%04x\n", dev->vendor, dev->device);
1574 }
1575 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB, 	quirk_disable_broadcom_boot_interrupt);
1576 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB, 	quirk_disable_broadcom_boot_interrupt);
1577 
1578 /*
1579  * disable boot interrupts on AMD and ATI chipsets
1580  */
1581 /*
1582  * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
1583  * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
1584  * (due to an erratum).
1585  */
1586 #define AMD_813X_MISC			0x40
1587 #define AMD_813X_NOIOAMODE		(1<<0)
1588 #define AMD_813X_REV_B2			0x13
1589 
quirk_disable_amd_813x_boot_interrupt(struct pci_dev * dev)1590 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
1591 {
1592 	u32 pci_config_dword;
1593 
1594 	if (noioapicquirk)
1595 		return;
1596 	if (dev->revision == AMD_813X_REV_B2)
1597 		return;
1598 
1599 	pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
1600 	pci_config_dword &= ~AMD_813X_NOIOAMODE;
1601 	pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
1602 
1603 	printk(KERN_INFO "disabled boot interrupts on PCI device "
1604 			"0x%04x:0x%04x\n", dev->vendor, dev->device);
1605 }
1606 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8131_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
1607 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8132_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
1608 
1609 #define AMD_8111_PCI_IRQ_ROUTING	0x56
1610 
quirk_disable_amd_8111_boot_interrupt(struct pci_dev * dev)1611 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
1612 {
1613 	u16 pci_config_word;
1614 
1615 	if (noioapicquirk)
1616 		return;
1617 
1618 	pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
1619 	if (!pci_config_word) {
1620 		printk(KERN_INFO "boot interrupts on PCI device 0x%04x:0x%04x "
1621 				"already disabled\n",
1622 				dev->vendor, dev->device);
1623 		return;
1624 	}
1625 	pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
1626 	printk(KERN_INFO "disabled boot interrupts on PCI device "
1627 			"0x%04x:0x%04x\n", dev->vendor, dev->device);
1628 }
1629 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8111_SMBUS, 	quirk_disable_amd_8111_boot_interrupt);
1630 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8111_SMBUS, 	quirk_disable_amd_8111_boot_interrupt);
1631 #endif /* CONFIG_X86_IO_APIC */
1632 
1633 /*
1634  * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
1635  * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
1636  * Re-allocate the region if needed...
1637  */
quirk_tc86c001_ide(struct pci_dev * dev)1638 static void __init quirk_tc86c001_ide(struct pci_dev *dev)
1639 {
1640 	struct resource *r = &dev->resource[0];
1641 
1642 	if (r->start & 0x8) {
1643 		r->start = 0;
1644 		r->end = 0xf;
1645 	}
1646 }
1647 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
1648 			 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
1649 			 quirk_tc86c001_ide);
1650 
quirk_netmos(struct pci_dev * dev)1651 static void __devinit quirk_netmos(struct pci_dev *dev)
1652 {
1653 	unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
1654 	unsigned int num_serial = dev->subsystem_device & 0xf;
1655 
1656 	/*
1657 	 * These Netmos parts are multiport serial devices with optional
1658 	 * parallel ports.  Even when parallel ports are present, they
1659 	 * are identified as class SERIAL, which means the serial driver
1660 	 * will claim them.  To prevent this, mark them as class OTHER.
1661 	 * These combo devices should be claimed by parport_serial.
1662 	 *
1663 	 * The subdevice ID is of the form 0x00PS, where <P> is the number
1664 	 * of parallel ports and <S> is the number of serial ports.
1665 	 */
1666 	switch (dev->device) {
1667 	case PCI_DEVICE_ID_NETMOS_9735:
1668 	case PCI_DEVICE_ID_NETMOS_9745:
1669 	case PCI_DEVICE_ID_NETMOS_9835:
1670 	case PCI_DEVICE_ID_NETMOS_9845:
1671 	case PCI_DEVICE_ID_NETMOS_9855:
1672 		if ((dev->class >> 8) == PCI_CLASS_COMMUNICATION_SERIAL &&
1673 		    num_parallel) {
1674 			dev_info(&dev->dev, "Netmos %04x (%u parallel, "
1675 				"%u serial); changing class SERIAL to OTHER "
1676 				"(use parport_serial)\n",
1677 				dev->device, num_parallel, num_serial);
1678 			dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
1679 			    (dev->class & 0xff);
1680 		}
1681 	}
1682 }
1683 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos);
1684 
quirk_e100_interrupt(struct pci_dev * dev)1685 static void __devinit quirk_e100_interrupt(struct pci_dev *dev)
1686 {
1687 	u16 command, pmcsr;
1688 	u8 __iomem *csr;
1689 	u8 cmd_hi;
1690 	int pm;
1691 
1692 	switch (dev->device) {
1693 	/* PCI IDs taken from drivers/net/e100.c */
1694 	case 0x1029:
1695 	case 0x1030 ... 0x1034:
1696 	case 0x1038 ... 0x103E:
1697 	case 0x1050 ... 0x1057:
1698 	case 0x1059:
1699 	case 0x1064 ... 0x106B:
1700 	case 0x1091 ... 0x1095:
1701 	case 0x1209:
1702 	case 0x1229:
1703 	case 0x2449:
1704 	case 0x2459:
1705 	case 0x245D:
1706 	case 0x27DC:
1707 		break;
1708 	default:
1709 		return;
1710 	}
1711 
1712 	/*
1713 	 * Some firmware hands off the e100 with interrupts enabled,
1714 	 * which can cause a flood of interrupts if packets are
1715 	 * received before the driver attaches to the device.  So
1716 	 * disable all e100 interrupts here.  The driver will
1717 	 * re-enable them when it's ready.
1718 	 */
1719 	pci_read_config_word(dev, PCI_COMMAND, &command);
1720 
1721 	if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
1722 		return;
1723 
1724 	/*
1725 	 * Check that the device is in the D0 power state. If it's not,
1726 	 * there is no point to look any further.
1727 	 */
1728 	pm = pci_find_capability(dev, PCI_CAP_ID_PM);
1729 	if (pm) {
1730 		pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
1731 		if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
1732 			return;
1733 	}
1734 
1735 	/* Convert from PCI bus to resource space.  */
1736 	csr = ioremap(pci_resource_start(dev, 0), 8);
1737 	if (!csr) {
1738 		dev_warn(&dev->dev, "Can't map e100 registers\n");
1739 		return;
1740 	}
1741 
1742 	cmd_hi = readb(csr + 3);
1743 	if (cmd_hi == 0) {
1744 		dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; "
1745 			"disabling\n");
1746 		writeb(1, csr + 3);
1747 	}
1748 
1749 	iounmap(csr);
1750 }
1751 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_e100_interrupt);
1752 
1753 /*
1754  * The 82575 and 82598 may experience data corruption issues when transitioning
1755  * out of L0S.  To prevent this we need to disable L0S on the pci-e link
1756  */
quirk_disable_aspm_l0s(struct pci_dev * dev)1757 static void __devinit quirk_disable_aspm_l0s(struct pci_dev *dev)
1758 {
1759 	dev_info(&dev->dev, "Disabling L0s\n");
1760 	pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
1761 }
1762 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
1763 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
1764 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
1765 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
1766 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
1767 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
1768 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
1769 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
1770 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
1771 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
1772 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
1773 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
1774 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
1775 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
1776 
fixup_rev1_53c810(struct pci_dev * dev)1777 static void __devinit fixup_rev1_53c810(struct pci_dev* dev)
1778 {
1779 	/* rev 1 ncr53c810 chips don't set the class at all which means
1780 	 * they don't get their resources remapped. Fix that here.
1781 	 */
1782 
1783 	if (dev->class == PCI_CLASS_NOT_DEFINED) {
1784 		dev_info(&dev->dev, "NCR 53c810 rev 1 detected; setting PCI class\n");
1785 		dev->class = PCI_CLASS_STORAGE_SCSI;
1786 	}
1787 }
1788 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
1789 
1790 /* Enable 1k I/O space granularity on the Intel P64H2 */
quirk_p64h2_1k_io(struct pci_dev * dev)1791 static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
1792 {
1793 	u16 en1k;
1794 	u8 io_base_lo, io_limit_lo;
1795 	unsigned long base, limit;
1796 	struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1797 
1798 	pci_read_config_word(dev, 0x40, &en1k);
1799 
1800 	if (en1k & 0x200) {
1801 		dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n");
1802 
1803 		pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
1804 		pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
1805 		base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1806 		limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
1807 
1808 		if (base <= limit) {
1809 			res->start = base;
1810 			res->end = limit + 0x3ff;
1811 		}
1812 	}
1813 }
1814 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,	0x1460,		quirk_p64h2_1k_io);
1815 
1816 /* Fix the IOBL_ADR for 1k I/O space granularity on the Intel P64H2
1817  * The IOBL_ADR gets re-written to 4k boundaries in pci_setup_bridge()
1818  * in drivers/pci/setup-bus.c
1819  */
quirk_p64h2_1k_io_fix_iobl(struct pci_dev * dev)1820 static void __devinit quirk_p64h2_1k_io_fix_iobl(struct pci_dev *dev)
1821 {
1822 	u16 en1k, iobl_adr, iobl_adr_1k;
1823 	struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
1824 
1825 	pci_read_config_word(dev, 0x40, &en1k);
1826 
1827 	if (en1k & 0x200) {
1828 		pci_read_config_word(dev, PCI_IO_BASE, &iobl_adr);
1829 
1830 		iobl_adr_1k = iobl_adr | (res->start >> 8) | (res->end & 0xfc00);
1831 
1832 		if (iobl_adr != iobl_adr_1k) {
1833 			dev_info(&dev->dev, "Fixing P64H2 IOBL_ADR from 0x%x to 0x%x for 1KB granularity\n",
1834 				iobl_adr,iobl_adr_1k);
1835 			pci_write_config_word(dev, PCI_IO_BASE, iobl_adr_1k);
1836 		}
1837 	}
1838 }
1839 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x1460,		quirk_p64h2_1k_io_fix_iobl);
1840 
1841 /* Under some circumstances, AER is not linked with extended capabilities.
1842  * Force it to be linked by setting the corresponding control bit in the
1843  * config space.
1844  */
quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev * dev)1845 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
1846 {
1847 	uint8_t b;
1848 	if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
1849 		if (!(b & 0x20)) {
1850 			pci_write_config_byte(dev, 0xf41, b | 0x20);
1851 			dev_info(&dev->dev,
1852 			       "Linking AER extended capability\n");
1853 		}
1854 	}
1855 }
1856 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1857 			quirk_nvidia_ck804_pcie_aer_ext_cap);
1858 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
1859 			quirk_nvidia_ck804_pcie_aer_ext_cap);
1860 
quirk_via_cx700_pci_parking_caching(struct pci_dev * dev)1861 static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
1862 {
1863 	/*
1864 	 * Disable PCI Bus Parking and PCI Master read caching on CX700
1865 	 * which causes unspecified timing errors with a VT6212L on the PCI
1866 	 * bus leading to USB2.0 packet loss. The defaults are that these
1867 	 * features are turned off but some BIOSes turn them on.
1868 	 */
1869 
1870 	uint8_t b;
1871 	if (pci_read_config_byte(dev, 0x76, &b) == 0) {
1872 		if (b & 0x40) {
1873 			/* Turn off PCI Bus Parking */
1874 			pci_write_config_byte(dev, 0x76, b ^ 0x40);
1875 
1876 			dev_info(&dev->dev,
1877 				"Disabling VIA CX700 PCI parking\n");
1878 		}
1879 	}
1880 
1881 	if (pci_read_config_byte(dev, 0x72, &b) == 0) {
1882 		if (b != 0) {
1883 			/* Turn off PCI Master read caching */
1884 			pci_write_config_byte(dev, 0x72, 0x0);
1885 
1886 			/* Set PCI Master Bus time-out to "1x16 PCLK" */
1887 			pci_write_config_byte(dev, 0x75, 0x1);
1888 
1889 			/* Disable "Read FIFO Timer" */
1890 			pci_write_config_byte(dev, 0x77, 0x0);
1891 
1892 			dev_info(&dev->dev,
1893 				"Disabling VIA CX700 PCI caching\n");
1894 		}
1895 	}
1896 }
1897 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
1898 
1899 /*
1900  * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
1901  * VPD end tag will hang the device.  This problem was initially
1902  * observed when a vpd entry was created in sysfs
1903  * ('/sys/bus/pci/devices/<id>/vpd').   A read to this sysfs entry
1904  * will dump 32k of data.  Reading a full 32k will cause an access
1905  * beyond the VPD end tag causing the device to hang.  Once the device
1906  * is hung, the bnx2 driver will not be able to reset the device.
1907  * We believe that it is legal to read beyond the end tag and
1908  * therefore the solution is to limit the read/write length.
1909  */
quirk_brcm_570x_limit_vpd(struct pci_dev * dev)1910 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
1911 {
1912 	/*
1913 	 * Only disable the VPD capability for 5706, 5706S, 5708,
1914 	 * 5708S and 5709 rev. A
1915 	 */
1916 	if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
1917 	    (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
1918 	    (dev->device == PCI_DEVICE_ID_NX2_5708) ||
1919 	    (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
1920 	    ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
1921 	     (dev->revision & 0xf0) == 0x0)) {
1922 		if (dev->vpd)
1923 			dev->vpd->len = 0x80;
1924 	}
1925 }
1926 
1927 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1928 			PCI_DEVICE_ID_NX2_5706,
1929 			quirk_brcm_570x_limit_vpd);
1930 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1931 			PCI_DEVICE_ID_NX2_5706S,
1932 			quirk_brcm_570x_limit_vpd);
1933 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1934 			PCI_DEVICE_ID_NX2_5708,
1935 			quirk_brcm_570x_limit_vpd);
1936 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1937 			PCI_DEVICE_ID_NX2_5708S,
1938 			quirk_brcm_570x_limit_vpd);
1939 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1940 			PCI_DEVICE_ID_NX2_5709,
1941 			quirk_brcm_570x_limit_vpd);
1942 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
1943 			PCI_DEVICE_ID_NX2_5709S,
1944 			quirk_brcm_570x_limit_vpd);
1945 
1946 #ifdef CONFIG_PCI_MSI
1947 /* Some chipsets do not support MSI. We cannot easily rely on setting
1948  * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
1949  * some other busses controlled by the chipset even if Linux is not
1950  * aware of it.  Instead of setting the flag on all busses in the
1951  * machine, simply disable MSI globally.
1952  */
quirk_disable_all_msi(struct pci_dev * dev)1953 static void __init quirk_disable_all_msi(struct pci_dev *dev)
1954 {
1955 	pci_no_msi();
1956 	dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n");
1957 }
1958 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
1959 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
1960 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
1961 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
1962 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
1963 
1964 /* Disable MSI on chipsets that are known to not support it */
quirk_disable_msi(struct pci_dev * dev)1965 static void __devinit quirk_disable_msi(struct pci_dev *dev)
1966 {
1967 	if (dev->subordinate) {
1968 		dev_warn(&dev->dev, "MSI quirk detected; "
1969 			"subordinate MSI disabled\n");
1970 		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
1971 	}
1972 }
1973 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
1974 
1975 /* Go through the list of Hypertransport capabilities and
1976  * return 1 if a HT MSI capability is found and enabled */
msi_ht_cap_enabled(struct pci_dev * dev)1977 static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
1978 {
1979 	int pos, ttl = 48;
1980 
1981 	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
1982 	while (pos && ttl--) {
1983 		u8 flags;
1984 
1985 		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
1986 					 &flags) == 0)
1987 		{
1988 			dev_info(&dev->dev, "Found %s HT MSI Mapping\n",
1989 				flags & HT_MSI_FLAGS_ENABLE ?
1990 				"enabled" : "disabled");
1991 			return (flags & HT_MSI_FLAGS_ENABLE) != 0;
1992 		}
1993 
1994 		pos = pci_find_next_ht_capability(dev, pos,
1995 						  HT_CAPTYPE_MSI_MAPPING);
1996 	}
1997 	return 0;
1998 }
1999 
2000 /* Check the hypertransport MSI mapping to know whether MSI is enabled or not */
quirk_msi_ht_cap(struct pci_dev * dev)2001 static void __devinit quirk_msi_ht_cap(struct pci_dev *dev)
2002 {
2003 	if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2004 		dev_warn(&dev->dev, "MSI quirk detected; "
2005 			"subordinate MSI disabled\n");
2006 		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2007 	}
2008 }
2009 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2010 			quirk_msi_ht_cap);
2011 
2012 /* The nVidia CK804 chipset may have 2 HT MSI mappings.
2013  * MSI are supported if the MSI capability set in any of these mappings.
2014  */
quirk_nvidia_ck804_msi_ht_cap(struct pci_dev * dev)2015 static void __devinit quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2016 {
2017 	struct pci_dev *pdev;
2018 
2019 	if (!dev->subordinate)
2020 		return;
2021 
2022 	/* check HT MSI cap on this chipset and the root one.
2023 	 * a single one having MSI is enough to be sure that MSI are supported.
2024 	 */
2025 	pdev = pci_get_slot(dev->bus, 0);
2026 	if (!pdev)
2027 		return;
2028 	if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2029 		dev_warn(&dev->dev, "MSI quirk detected; "
2030 			"subordinate MSI disabled\n");
2031 		dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2032 	}
2033 	pci_dev_put(pdev);
2034 }
2035 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2036 			quirk_nvidia_ck804_msi_ht_cap);
2037 
2038 /* Force enable MSI mapping capability on HT bridges */
ht_enable_msi_mapping(struct pci_dev * dev)2039 static void __devinit ht_enable_msi_mapping(struct pci_dev *dev)
2040 {
2041 	int pos, ttl = 48;
2042 
2043 	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2044 	while (pos && ttl--) {
2045 		u8 flags;
2046 
2047 		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2048 					 &flags) == 0) {
2049 			dev_info(&dev->dev, "Enabling HT MSI Mapping\n");
2050 
2051 			pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2052 					      flags | HT_MSI_FLAGS_ENABLE);
2053 		}
2054 		pos = pci_find_next_ht_capability(dev, pos,
2055 						  HT_CAPTYPE_MSI_MAPPING);
2056 	}
2057 }
2058 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2059 			 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2060 			 ht_enable_msi_mapping);
2061 
2062 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2063 			 ht_enable_msi_mapping);
2064 
2065 /* The P5N32-SLI Premium motherboard from Asus has a problem with msi
2066  * for the MCP55 NIC. It is not yet determined whether the msi problem
2067  * also affects other devices. As for now, turn off msi for this device.
2068  */
nvenet_msi_disable(struct pci_dev * dev)2069 static void __devinit nvenet_msi_disable(struct pci_dev *dev)
2070 {
2071 	if (dmi_name_in_vendors("P5N32-SLI PREMIUM")) {
2072 		dev_info(&dev->dev,
2073 			 "Disabling msi for MCP55 NIC on P5N32-SLI Premium\n");
2074 		dev->no_msi = 1;
2075 	}
2076 }
2077 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2078 			PCI_DEVICE_ID_NVIDIA_NVENET_15,
2079 			nvenet_msi_disable);
2080 
nv_ht_enable_msi_mapping(struct pci_dev * dev)2081 static void __devinit nv_ht_enable_msi_mapping(struct pci_dev *dev)
2082 {
2083 	struct pci_dev *host_bridge;
2084 	int pos;
2085 	int i, dev_no;
2086 	int found = 0;
2087 
2088 	dev_no = dev->devfn >> 3;
2089 	for (i = dev_no; i >= 0; i--) {
2090 		host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2091 		if (!host_bridge)
2092 			continue;
2093 
2094 		pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2095 		if (pos != 0) {
2096 			found = 1;
2097 			break;
2098 		}
2099 		pci_dev_put(host_bridge);
2100 	}
2101 
2102 	if (!found)
2103 		return;
2104 
2105 	/* root did that ! */
2106 	if (msi_ht_cap_enabled(host_bridge))
2107 		goto out;
2108 
2109 	ht_enable_msi_mapping(dev);
2110 
2111 out:
2112 	pci_dev_put(host_bridge);
2113 }
2114 
ht_disable_msi_mapping(struct pci_dev * dev)2115 static void __devinit ht_disable_msi_mapping(struct pci_dev *dev)
2116 {
2117 	int pos, ttl = 48;
2118 
2119 	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2120 	while (pos && ttl--) {
2121 		u8 flags;
2122 
2123 		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2124 					 &flags) == 0) {
2125 			dev_info(&dev->dev, "Disabling HT MSI Mapping\n");
2126 
2127 			pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2128 					      flags & ~HT_MSI_FLAGS_ENABLE);
2129 		}
2130 		pos = pci_find_next_ht_capability(dev, pos,
2131 						  HT_CAPTYPE_MSI_MAPPING);
2132 	}
2133 }
2134 
ht_check_msi_mapping(struct pci_dev * dev)2135 static int __devinit ht_check_msi_mapping(struct pci_dev *dev)
2136 {
2137 	int pos, ttl = 48;
2138 	int found = 0;
2139 
2140 	/* check if there is HT MSI cap or enabled on this device */
2141 	pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2142 	while (pos && ttl--) {
2143 		u8 flags;
2144 
2145 		if (found < 1)
2146 			found = 1;
2147 		if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2148 					 &flags) == 0) {
2149 			if (flags & HT_MSI_FLAGS_ENABLE) {
2150 				if (found < 2) {
2151 					found = 2;
2152 					break;
2153 				}
2154 			}
2155 		}
2156 		pos = pci_find_next_ht_capability(dev, pos,
2157 						  HT_CAPTYPE_MSI_MAPPING);
2158 	}
2159 
2160 	return found;
2161 }
2162 
nv_msi_ht_cap_quirk(struct pci_dev * dev)2163 static void __devinit nv_msi_ht_cap_quirk(struct pci_dev *dev)
2164 {
2165 	struct pci_dev *host_bridge;
2166 	int pos;
2167 	int found;
2168 
2169 	/* Enabling HT MSI mapping on this device breaks MCP51 */
2170 	if (dev->device == 0x270)
2171 		return;
2172 
2173 	/* check if there is HT MSI cap or enabled on this device */
2174 	found = ht_check_msi_mapping(dev);
2175 
2176 	/* no HT MSI CAP */
2177 	if (found == 0)
2178 		return;
2179 
2180 	/*
2181 	 * HT MSI mapping should be disabled on devices that are below
2182 	 * a non-Hypertransport host bridge. Locate the host bridge...
2183 	 */
2184 	host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
2185 	if (host_bridge == NULL) {
2186 		dev_warn(&dev->dev,
2187 			 "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2188 		return;
2189 	}
2190 
2191 	pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2192 	if (pos != 0) {
2193 		/* Host bridge is to HT */
2194 		if (found == 1) {
2195 			/* it is not enabled, try to enable it */
2196 			nv_ht_enable_msi_mapping(dev);
2197 		}
2198 		return;
2199 	}
2200 
2201 	/* HT MSI is not enabled */
2202 	if (found == 1)
2203 		return;
2204 
2205 	/* Host bridge is not to HT, disable HT MSI mapping on this device */
2206 	ht_disable_msi_mapping(dev);
2207 }
2208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk);
2209 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk);
2210 
quirk_msi_intx_disable_bug(struct pci_dev * dev)2211 static void __devinit quirk_msi_intx_disable_bug(struct pci_dev *dev)
2212 {
2213 	dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2214 }
quirk_msi_intx_disable_ati_bug(struct pci_dev * dev)2215 static void __devinit quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2216 {
2217 	struct pci_dev *p;
2218 
2219 	/* SB700 MSI issue will be fixed at HW level from revision A21,
2220 	 * we need check PCI REVISION ID of SMBus controller to get SB700
2221 	 * revision.
2222 	 */
2223 	p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2224 			   NULL);
2225 	if (!p)
2226 		return;
2227 
2228 	if ((p->revision < 0x3B) && (p->revision >= 0x30))
2229 		dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2230 	pci_dev_put(p);
2231 }
2232 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2233 			PCI_DEVICE_ID_TIGON3_5780,
2234 			quirk_msi_intx_disable_bug);
2235 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2236 			PCI_DEVICE_ID_TIGON3_5780S,
2237 			quirk_msi_intx_disable_bug);
2238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2239 			PCI_DEVICE_ID_TIGON3_5714,
2240 			quirk_msi_intx_disable_bug);
2241 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2242 			PCI_DEVICE_ID_TIGON3_5714S,
2243 			quirk_msi_intx_disable_bug);
2244 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2245 			PCI_DEVICE_ID_TIGON3_5715,
2246 			quirk_msi_intx_disable_bug);
2247 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2248 			PCI_DEVICE_ID_TIGON3_5715S,
2249 			quirk_msi_intx_disable_bug);
2250 
2251 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2252 			quirk_msi_intx_disable_ati_bug);
2253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2254 			quirk_msi_intx_disable_ati_bug);
2255 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2256 			quirk_msi_intx_disable_ati_bug);
2257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2258 			quirk_msi_intx_disable_ati_bug);
2259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2260 			quirk_msi_intx_disable_ati_bug);
2261 
2262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2263 			quirk_msi_intx_disable_bug);
2264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2265 			quirk_msi_intx_disable_bug);
2266 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2267 			quirk_msi_intx_disable_bug);
2268 
2269 #endif /* CONFIG_PCI_MSI */
2270 
pci_do_fixups(struct pci_dev * dev,struct pci_fixup * f,struct pci_fixup * end)2271 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
2272 			  struct pci_fixup *end)
2273 {
2274 	while (f < end) {
2275 		if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
2276 		    (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
2277 			dev_dbg(&dev->dev, "calling %pF\n", f->hook);
2278 			f->hook(dev);
2279 		}
2280 		f++;
2281 	}
2282 }
2283 
2284 extern struct pci_fixup __start_pci_fixups_early[];
2285 extern struct pci_fixup __end_pci_fixups_early[];
2286 extern struct pci_fixup __start_pci_fixups_header[];
2287 extern struct pci_fixup __end_pci_fixups_header[];
2288 extern struct pci_fixup __start_pci_fixups_final[];
2289 extern struct pci_fixup __end_pci_fixups_final[];
2290 extern struct pci_fixup __start_pci_fixups_enable[];
2291 extern struct pci_fixup __end_pci_fixups_enable[];
2292 extern struct pci_fixup __start_pci_fixups_resume[];
2293 extern struct pci_fixup __end_pci_fixups_resume[];
2294 extern struct pci_fixup __start_pci_fixups_resume_early[];
2295 extern struct pci_fixup __end_pci_fixups_resume_early[];
2296 extern struct pci_fixup __start_pci_fixups_suspend[];
2297 extern struct pci_fixup __end_pci_fixups_suspend[];
2298 
2299 
pci_fixup_device(enum pci_fixup_pass pass,struct pci_dev * dev)2300 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
2301 {
2302 	struct pci_fixup *start, *end;
2303 
2304 	switch(pass) {
2305 	case pci_fixup_early:
2306 		start = __start_pci_fixups_early;
2307 		end = __end_pci_fixups_early;
2308 		break;
2309 
2310 	case pci_fixup_header:
2311 		start = __start_pci_fixups_header;
2312 		end = __end_pci_fixups_header;
2313 		break;
2314 
2315 	case pci_fixup_final:
2316 		start = __start_pci_fixups_final;
2317 		end = __end_pci_fixups_final;
2318 		break;
2319 
2320 	case pci_fixup_enable:
2321 		start = __start_pci_fixups_enable;
2322 		end = __end_pci_fixups_enable;
2323 		break;
2324 
2325 	case pci_fixup_resume:
2326 		start = __start_pci_fixups_resume;
2327 		end = __end_pci_fixups_resume;
2328 		break;
2329 
2330 	case pci_fixup_resume_early:
2331 		start = __start_pci_fixups_resume_early;
2332 		end = __end_pci_fixups_resume_early;
2333 		break;
2334 
2335 	case pci_fixup_suspend:
2336 		start = __start_pci_fixups_suspend;
2337 		end = __end_pci_fixups_suspend;
2338 		break;
2339 
2340 	default:
2341 		/* stupid compiler warning, you would think with an enum... */
2342 		return;
2343 	}
2344 	pci_do_fixups(dev, start, end);
2345 }
2346 #else
pci_fixup_device(enum pci_fixup_pass pass,struct pci_dev * dev)2347 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
2348 #endif
2349 EXPORT_SYMBOL(pci_fixup_device);
2350