1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * This file contains work-arounds for many known PCI hardware bugs. 4 * Devices present only on certain architectures (host bridges et cetera) 5 * should be handled in arch-specific code. 6 * 7 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init. 8 * 9 * Copyright (c) 1999 Martin Mares <mj@ucw.cz> 10 * 11 * Init/reset quirks for USB host controllers should be in the USB quirks 12 * file, where their drivers can use them. 13 */ 14 15 #include <linux/bitfield.h> 16 #include <linux/types.h> 17 #include <linux/kernel.h> 18 #include <linux/export.h> 19 #include <linux/pci.h> 20 #include <linux/isa-dma.h> /* isa_dma_bridge_buggy */ 21 #include <linux/init.h> 22 #include <linux/delay.h> 23 #include <linux/acpi.h> 24 #include <linux/dmi.h> 25 #include <linux/ioport.h> 26 #include <linux/sched.h> 27 #include <linux/ktime.h> 28 #include <linux/mm.h> 29 #include <linux/nvme.h> 30 #include <linux/platform_data/x86/apple.h> 31 #include <linux/pm_runtime.h> 32 #include <linux/suspend.h> 33 #include <linux/switchtec.h> 34 #include "pci.h" 35 36 static ktime_t fixup_debug_start(struct pci_dev *dev, 37 void (*fn)(struct pci_dev *dev)) 38 { 39 if (initcall_debug) 40 pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current)); 41 42 return ktime_get(); 43 } 44 45 static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime, 46 void (*fn)(struct pci_dev *dev)) 47 { 48 ktime_t delta, rettime; 49 unsigned long long duration; 50 51 rettime = ktime_get(); 52 delta = ktime_sub(rettime, calltime); 53 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 54 if (initcall_debug || duration > 10000) 55 pci_info(dev, "%pS took %lld usecs\n", fn, duration); 56 } 57 58 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, 59 struct pci_fixup *end) 60 { 61 ktime_t calltime; 62 63 for (; f < end; f++) 64 if ((f->class == (u32) (dev->class >> f->class_shift) || 65 f->class == (u32) PCI_ANY_ID) && 66 (f->vendor == dev->vendor || 67 f->vendor == (u16) PCI_ANY_ID) && 68 (f->device == dev->device || 69 f->device == (u16) PCI_ANY_ID)) { 70 void (*hook)(struct pci_dev *dev); 71 #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS 72 hook = offset_to_ptr(&f->hook_offset); 73 #else 74 hook = f->hook; 75 #endif 76 calltime = fixup_debug_start(dev, hook); 77 hook(dev); 78 fixup_debug_report(dev, calltime, hook); 79 } 80 } 81 82 extern struct pci_fixup __start_pci_fixups_early[]; 83 extern struct pci_fixup __end_pci_fixups_early[]; 84 extern struct pci_fixup __start_pci_fixups_header[]; 85 extern struct pci_fixup __end_pci_fixups_header[]; 86 extern struct pci_fixup __start_pci_fixups_final[]; 87 extern struct pci_fixup __end_pci_fixups_final[]; 88 extern struct pci_fixup __start_pci_fixups_enable[]; 89 extern struct pci_fixup __end_pci_fixups_enable[]; 90 extern struct pci_fixup __start_pci_fixups_resume[]; 91 extern struct pci_fixup __end_pci_fixups_resume[]; 92 extern struct pci_fixup __start_pci_fixups_resume_early[]; 93 extern struct pci_fixup __end_pci_fixups_resume_early[]; 94 extern struct pci_fixup __start_pci_fixups_suspend[]; 95 extern struct pci_fixup __end_pci_fixups_suspend[]; 96 extern struct pci_fixup __start_pci_fixups_suspend_late[]; 97 extern struct pci_fixup __end_pci_fixups_suspend_late[]; 98 99 static bool pci_apply_fixup_final_quirks; 100 101 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) 102 { 103 struct pci_fixup *start, *end; 104 105 switch (pass) { 106 case pci_fixup_early: 107 start = __start_pci_fixups_early; 108 end = __end_pci_fixups_early; 109 break; 110 111 case pci_fixup_header: 112 start = __start_pci_fixups_header; 113 end = __end_pci_fixups_header; 114 break; 115 116 case pci_fixup_final: 117 if (!pci_apply_fixup_final_quirks) 118 return; 119 start = __start_pci_fixups_final; 120 end = __end_pci_fixups_final; 121 break; 122 123 case pci_fixup_enable: 124 start = __start_pci_fixups_enable; 125 end = __end_pci_fixups_enable; 126 break; 127 128 case pci_fixup_resume: 129 start = __start_pci_fixups_resume; 130 end = __end_pci_fixups_resume; 131 break; 132 133 case pci_fixup_resume_early: 134 start = __start_pci_fixups_resume_early; 135 end = __end_pci_fixups_resume_early; 136 break; 137 138 case pci_fixup_suspend: 139 start = __start_pci_fixups_suspend; 140 end = __end_pci_fixups_suspend; 141 break; 142 143 case pci_fixup_suspend_late: 144 start = __start_pci_fixups_suspend_late; 145 end = __end_pci_fixups_suspend_late; 146 break; 147 148 default: 149 /* stupid compiler warning, you would think with an enum... */ 150 return; 151 } 152 pci_do_fixups(dev, start, end); 153 } 154 EXPORT_SYMBOL(pci_fixup_device); 155 156 static int __init pci_apply_final_quirks(void) 157 { 158 struct pci_dev *dev = NULL; 159 u8 cls = 0; 160 u8 tmp; 161 162 if (pci_cache_line_size) 163 pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2); 164 165 pci_apply_fixup_final_quirks = true; 166 for_each_pci_dev(dev) { 167 pci_fixup_device(pci_fixup_final, dev); 168 /* 169 * If arch hasn't set it explicitly yet, use the CLS 170 * value shared by all PCI devices. If there's a 171 * mismatch, fall back to the default value. 172 */ 173 if (!pci_cache_line_size) { 174 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp); 175 if (!cls) 176 cls = tmp; 177 if (!tmp || cls == tmp) 178 continue; 179 180 pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n", 181 cls << 2, tmp << 2, 182 pci_dfl_cache_line_size << 2); 183 pci_cache_line_size = pci_dfl_cache_line_size; 184 } 185 } 186 187 if (!pci_cache_line_size) { 188 pr_info("PCI: CLS %u bytes, default %u\n", cls << 2, 189 pci_dfl_cache_line_size << 2); 190 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; 191 } 192 193 return 0; 194 } 195 fs_initcall_sync(pci_apply_final_quirks); 196 197 /* 198 * Decoding should be disabled for a PCI device during BAR sizing to avoid 199 * conflict. But doing so may cause problems on host bridge and perhaps other 200 * key system devices. For devices that need to have mmio decoding always-on, 201 * we need to set the dev->mmio_always_on bit. 202 */ 203 static void quirk_mmio_always_on(struct pci_dev *dev) 204 { 205 dev->mmio_always_on = 1; 206 } 207 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID, 208 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on); 209 210 /* 211 * The Mellanox Tavor device gives false positive parity errors. Disable 212 * parity error reporting. 213 */ 214 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, pci_disable_parity); 215 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, pci_disable_parity); 216 217 /* 218 * Deal with broken BIOSes that neglect to enable passive release, 219 * which can cause problems in combination with the 82441FX/PPro MTRRs 220 */ 221 static void quirk_passive_release(struct pci_dev *dev) 222 { 223 struct pci_dev *d = NULL; 224 unsigned char dlc; 225 226 /* 227 * We have to make sure a particular bit is set in the PIIX3 228 * ISA bridge, so we have to go out and find it. 229 */ 230 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { 231 pci_read_config_byte(d, 0x82, &dlc); 232 if (!(dlc & 1<<1)) { 233 pci_info(d, "PIIX3: Enabling Passive Release\n"); 234 dlc |= 1<<1; 235 pci_write_config_byte(d, 0x82, dlc); 236 } 237 } 238 } 239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 240 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); 241 242 #ifdef CONFIG_X86_32 243 /* 244 * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a 245 * workaround but VIA don't answer queries. If you happen to have good 246 * contacts at VIA ask them for me please -- Alan 247 * 248 * This appears to be BIOS not version dependent. So presumably there is a 249 * chipset level fix. 250 */ 251 static void quirk_isa_dma_hangs(struct pci_dev *dev) 252 { 253 if (!isa_dma_bridge_buggy) { 254 isa_dma_bridge_buggy = 1; 255 pci_info(dev, "Activating ISA DMA hang workarounds\n"); 256 } 257 } 258 /* 259 * It's not totally clear which chipsets are the problematic ones. We know 260 * 82C586 and 82C596 variants are affected. 261 */ 262 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); 263 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); 264 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); 265 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); 266 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); 267 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); 268 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); 269 #endif 270 271 /* 272 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear 273 * for some HT machines to use C4 w/o hanging. 274 */ 275 static void quirk_tigerpoint_bm_sts(struct pci_dev *dev) 276 { 277 u32 pmbase; 278 u16 pm1a; 279 280 pci_read_config_dword(dev, 0x40, &pmbase); 281 pmbase = pmbase & 0xff80; 282 pm1a = inw(pmbase); 283 284 if (pm1a & 0x10) { 285 pci_info(dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n"); 286 outw(0x10, pmbase); 287 } 288 } 289 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts); 290 291 /* Chipsets where PCI->PCI transfers vanish or hang */ 292 static void quirk_nopcipci(struct pci_dev *dev) 293 { 294 if ((pci_pci_problems & PCIPCI_FAIL) == 0) { 295 pci_info(dev, "Disabling direct PCI/PCI transfers\n"); 296 pci_pci_problems |= PCIPCI_FAIL; 297 } 298 } 299 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); 300 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); 301 302 static void quirk_nopciamd(struct pci_dev *dev) 303 { 304 u8 rev; 305 pci_read_config_byte(dev, 0x08, &rev); 306 if (rev == 0x13) { 307 /* Erratum 24 */ 308 pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); 309 pci_pci_problems |= PCIAGP_FAIL; 310 } 311 } 312 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); 313 314 /* Triton requires workarounds to be used by the drivers */ 315 static void quirk_triton(struct pci_dev *dev) 316 { 317 if ((pci_pci_problems&PCIPCI_TRITON) == 0) { 318 pci_info(dev, "Limiting direct PCI/PCI transfers\n"); 319 pci_pci_problems |= PCIPCI_TRITON; 320 } 321 } 322 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); 323 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); 324 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); 325 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); 326 327 /* 328 * VIA Apollo KT133 needs PCI latency patch 329 * Made according to a Windows driver-based patch by George E. Breese; 330 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm 331 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on 332 * which Mr Breese based his work. 333 * 334 * Updated based on further information from the site and also on 335 * information provided by VIA 336 */ 337 static void quirk_vialatency(struct pci_dev *dev) 338 { 339 struct pci_dev *p; 340 u8 busarb; 341 342 /* 343 * Ok, we have a potential problem chipset here. Now see if we have 344 * a buggy southbridge. 345 */ 346 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); 347 if (p != NULL) { 348 349 /* 350 * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; 351 * thanks Dan Hollis. 352 * Check for buggy part revisions 353 */ 354 if (p->revision < 0x40 || p->revision > 0x42) 355 goto exit; 356 } else { 357 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); 358 if (p == NULL) /* No problem parts */ 359 goto exit; 360 361 /* Check for buggy part revisions */ 362 if (p->revision < 0x10 || p->revision > 0x12) 363 goto exit; 364 } 365 366 /* 367 * Ok we have the problem. Now set the PCI master grant to occur 368 * every master grant. The apparent bug is that under high PCI load 369 * (quite common in Linux of course) you can get data loss when the 370 * CPU is held off the bus for 3 bus master requests. This happens 371 * to include the IDE controllers.... 372 * 373 * VIA only apply this fix when an SB Live! is present but under 374 * both Linux and Windows this isn't enough, and we have seen 375 * corruption without SB Live! but with things like 3 UDMA IDE 376 * controllers. So we ignore that bit of the VIA recommendation.. 377 */ 378 pci_read_config_byte(dev, 0x76, &busarb); 379 380 /* 381 * Set bit 4 and bit 5 of byte 76 to 0x01 382 * "Master priority rotation on every PCI master grant" 383 */ 384 busarb &= ~(1<<5); 385 busarb |= (1<<4); 386 pci_write_config_byte(dev, 0x76, busarb); 387 pci_info(dev, "Applying VIA southbridge workaround\n"); 388 exit: 389 pci_dev_put(p); 390 } 391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 392 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 394 /* Must restore this on a resume from RAM */ 395 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); 396 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); 397 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); 398 399 /* VIA Apollo VP3 needs ETBF on BT848/878 */ 400 static void quirk_viaetbf(struct pci_dev *dev) 401 { 402 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) { 403 pci_info(dev, "Limiting direct PCI/PCI transfers\n"); 404 pci_pci_problems |= PCIPCI_VIAETBF; 405 } 406 } 407 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); 408 409 static void quirk_vsfx(struct pci_dev *dev) 410 { 411 if ((pci_pci_problems&PCIPCI_VSFX) == 0) { 412 pci_info(dev, "Limiting direct PCI/PCI transfers\n"); 413 pci_pci_problems |= PCIPCI_VSFX; 414 } 415 } 416 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); 417 418 /* 419 * ALi Magik requires workarounds to be used by the drivers that DMA to AGP 420 * space. Latency must be set to 0xA and Triton workaround applied too. 421 * [Info kindly provided by ALi] 422 */ 423 static void quirk_alimagik(struct pci_dev *dev) 424 { 425 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) { 426 pci_info(dev, "Limiting direct PCI/PCI transfers\n"); 427 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; 428 } 429 } 430 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); 431 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); 432 433 /* Natoma has some interesting boundary conditions with Zoran stuff at least */ 434 static void quirk_natoma(struct pci_dev *dev) 435 { 436 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) { 437 pci_info(dev, "Limiting direct PCI/PCI transfers\n"); 438 pci_pci_problems |= PCIPCI_NATOMA; 439 } 440 } 441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); 442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); 443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); 444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); 445 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); 446 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); 447 448 /* 449 * This chip can cause PCI parity errors if config register 0xA0 is read 450 * while DMAs are occurring. 451 */ 452 static void quirk_citrine(struct pci_dev *dev) 453 { 454 dev->cfg_size = 0xA0; 455 } 456 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); 457 458 /* 459 * This chip can cause bus lockups if config addresses above 0x600 460 * are read or written. 461 */ 462 static void quirk_nfp6000(struct pci_dev *dev) 463 { 464 dev->cfg_size = 0x600; 465 } 466 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000); 467 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000); 468 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000); 469 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000); 470 471 /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */ 472 static void quirk_extend_bar_to_page(struct pci_dev *dev) 473 { 474 int i; 475 476 for (i = 0; i < PCI_STD_NUM_BARS; i++) { 477 struct resource *r = &dev->resource[i]; 478 479 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) { 480 r->end = PAGE_SIZE - 1; 481 r->start = 0; 482 r->flags |= IORESOURCE_UNSET; 483 pci_info(dev, "expanded BAR %d to page size: %pR\n", 484 i, r); 485 } 486 } 487 } 488 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page); 489 490 /* 491 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. 492 * If it's needed, re-allocate the region. 493 */ 494 static void quirk_s3_64M(struct pci_dev *dev) 495 { 496 struct resource *r = &dev->resource[0]; 497 498 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { 499 r->flags |= IORESOURCE_UNSET; 500 r->start = 0; 501 r->end = 0x3ffffff; 502 } 503 } 504 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); 505 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); 506 507 static void quirk_io(struct pci_dev *dev, int pos, unsigned int size, 508 const char *name) 509 { 510 u32 region; 511 struct pci_bus_region bus_region; 512 struct resource *res = dev->resource + pos; 513 514 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion); 515 516 if (!region) 517 return; 518 519 res->name = pci_name(dev); 520 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK; 521 res->flags |= 522 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN); 523 region &= ~(size - 1); 524 525 /* Convert from PCI bus to resource space */ 526 bus_region.start = region; 527 bus_region.end = region + size - 1; 528 pcibios_bus_to_resource(dev->bus, res, &bus_region); 529 530 pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n", 531 name, PCI_BASE_ADDRESS_0 + (pos << 2), res); 532 } 533 534 /* 535 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS 536 * ver. 1.33 20070103) don't set the correct ISA PCI region header info. 537 * BAR0 should be 8 bytes; instead, it may be set to something like 8k 538 * (which conflicts w/ BAR1's memory range). 539 * 540 * CS553x's ISA PCI BARs may also be read-only (ref: 541 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward). 542 */ 543 static void quirk_cs5536_vsa(struct pci_dev *dev) 544 { 545 static char *name = "CS5536 ISA bridge"; 546 547 if (pci_resource_len(dev, 0) != 8) { 548 quirk_io(dev, 0, 8, name); /* SMB */ 549 quirk_io(dev, 1, 256, name); /* GPIO */ 550 quirk_io(dev, 2, 64, name); /* MFGPT */ 551 pci_info(dev, "%s bug detected (incorrect header); workaround applied\n", 552 name); 553 } 554 } 555 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa); 556 557 static void quirk_io_region(struct pci_dev *dev, int port, 558 unsigned int size, int nr, const char *name) 559 { 560 u16 region; 561 struct pci_bus_region bus_region; 562 struct resource *res = dev->resource + nr; 563 564 pci_read_config_word(dev, port, ®ion); 565 region &= ~(size - 1); 566 567 if (!region) 568 return; 569 570 res->name = pci_name(dev); 571 res->flags = IORESOURCE_IO; 572 573 /* Convert from PCI bus to resource space */ 574 bus_region.start = region; 575 bus_region.end = region + size - 1; 576 pcibios_bus_to_resource(dev->bus, res, &bus_region); 577 578 if (!pci_claim_resource(dev, nr)) 579 pci_info(dev, "quirk: %pR claimed by %s\n", res, name); 580 } 581 582 /* 583 * ATI Northbridge setups MCE the processor if you even read somewhere 584 * between 0x3b0->0x3bb or read 0x3d3 585 */ 586 static void quirk_ati_exploding_mce(struct pci_dev *dev) 587 { 588 pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); 589 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ 590 request_region(0x3b0, 0x0C, "RadeonIGP"); 591 request_region(0x3d3, 0x01, "RadeonIGP"); 592 } 593 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); 594 595 /* 596 * In the AMD NL platform, this device ([1022:7912]) has a class code of 597 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will 598 * claim it. 599 * 600 * But the dwc3 driver is a more specific driver for this device, and we'd 601 * prefer to use it instead of xhci. To prevent xhci from claiming the 602 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec 603 * defines as "USB device (not host controller)". The dwc3 driver can then 604 * claim it based on its Vendor and Device ID. 605 */ 606 static void quirk_amd_nl_class(struct pci_dev *pdev) 607 { 608 u32 class = pdev->class; 609 610 /* Use "USB Device (not host controller)" class */ 611 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE; 612 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", 613 class, pdev->class); 614 } 615 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB, 616 quirk_amd_nl_class); 617 618 /* 619 * Synopsys USB 3.x host HAPS platform has a class code of 620 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these 621 * devices should use dwc3-haps driver. Change these devices' class code to 622 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming 623 * them. 624 */ 625 static void quirk_synopsys_haps(struct pci_dev *pdev) 626 { 627 u32 class = pdev->class; 628 629 switch (pdev->device) { 630 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3: 631 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI: 632 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31: 633 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE; 634 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", 635 class, pdev->class); 636 break; 637 } 638 } 639 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID, 640 PCI_CLASS_SERIAL_USB_XHCI, 0, 641 quirk_synopsys_haps); 642 643 /* 644 * Let's make the southbridge information explicit instead of having to 645 * worry about people probing the ACPI areas, for example.. (Yes, it 646 * happens, and if you read the wrong ACPI register it will put the machine 647 * to sleep with no way of waking it up again. Bummer). 648 * 649 * ALI M7101: Two IO regions pointed to by words at 650 * 0xE0 (64 bytes of ACPI registers) 651 * 0xE2 (32 bytes of SMB registers) 652 */ 653 static void quirk_ali7101_acpi(struct pci_dev *dev) 654 { 655 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); 656 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); 657 } 658 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); 659 660 static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 661 { 662 u32 devres; 663 u32 mask, size, base; 664 665 pci_read_config_dword(dev, port, &devres); 666 if ((devres & enable) != enable) 667 return; 668 mask = (devres >> 16) & 15; 669 base = devres & 0xffff; 670 size = 16; 671 for (;;) { 672 unsigned int bit = size >> 1; 673 if ((bit & mask) == bit) 674 break; 675 size = bit; 676 } 677 /* 678 * For now we only print it out. Eventually we'll want to 679 * reserve it (at least if it's in the 0x1000+ range), but 680 * let's get enough confirmation reports first. 681 */ 682 base &= -size; 683 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); 684 } 685 686 static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) 687 { 688 u32 devres; 689 u32 mask, size, base; 690 691 pci_read_config_dword(dev, port, &devres); 692 if ((devres & enable) != enable) 693 return; 694 base = devres & 0xffff0000; 695 mask = (devres & 0x3f) << 16; 696 size = 128 << 16; 697 for (;;) { 698 unsigned int bit = size >> 1; 699 if ((bit & mask) == bit) 700 break; 701 size = bit; 702 } 703 704 /* 705 * For now we only print it out. Eventually we'll want to 706 * reserve it, but let's get enough confirmation reports first. 707 */ 708 base &= -size; 709 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); 710 } 711 712 /* 713 * PIIX4 ACPI: Two IO regions pointed to by longwords at 714 * 0x40 (64 bytes of ACPI registers) 715 * 0x90 (16 bytes of SMB registers) 716 * and a few strange programmable PIIX4 device resources. 717 */ 718 static void quirk_piix4_acpi(struct pci_dev *dev) 719 { 720 u32 res_a; 721 722 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); 723 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); 724 725 /* Device resource A has enables for some of the other ones */ 726 pci_read_config_dword(dev, 0x5c, &res_a); 727 728 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); 729 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); 730 731 /* Device resource D is just bitfields for static resources */ 732 733 /* Device 12 enabled? */ 734 if (res_a & (1 << 29)) { 735 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); 736 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); 737 } 738 /* Device 13 enabled? */ 739 if (res_a & (1 << 30)) { 740 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); 741 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); 742 } 743 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); 744 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); 745 } 746 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); 747 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); 748 749 #define ICH_PMBASE 0x40 750 #define ICH_ACPI_CNTL 0x44 751 #define ICH4_ACPI_EN 0x10 752 #define ICH6_ACPI_EN 0x80 753 #define ICH4_GPIOBASE 0x58 754 #define ICH4_GPIO_CNTL 0x5c 755 #define ICH4_GPIO_EN 0x10 756 #define ICH6_GPIOBASE 0x48 757 #define ICH6_GPIO_CNTL 0x4c 758 #define ICH6_GPIO_EN 0x10 759 760 /* 761 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at 762 * 0x40 (128 bytes of ACPI, GPIO & TCO registers) 763 * 0x58 (64 bytes of GPIO I/O space) 764 */ 765 static void quirk_ich4_lpc_acpi(struct pci_dev *dev) 766 { 767 u8 enable; 768 769 /* 770 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict 771 * with low legacy (and fixed) ports. We don't know the decoding 772 * priority and can't tell whether the legacy device or the one created 773 * here is really at that address. This happens on boards with broken 774 * BIOSes. 775 */ 776 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 777 if (enable & ICH4_ACPI_EN) 778 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES, 779 "ICH4 ACPI/GPIO/TCO"); 780 781 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable); 782 if (enable & ICH4_GPIO_EN) 783 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1, 784 "ICH4 GPIO"); 785 } 786 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); 787 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); 788 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); 789 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); 790 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); 791 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); 792 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); 793 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); 794 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); 795 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); 796 797 static void ich6_lpc_acpi_gpio(struct pci_dev *dev) 798 { 799 u8 enable; 800 801 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); 802 if (enable & ICH6_ACPI_EN) 803 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES, 804 "ICH6 ACPI/GPIO/TCO"); 805 806 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable); 807 if (enable & ICH6_GPIO_EN) 808 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1, 809 "ICH6 GPIO"); 810 } 811 812 static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, 813 const char *name, int dynsize) 814 { 815 u32 val; 816 u32 size, base; 817 818 pci_read_config_dword(dev, reg, &val); 819 820 /* Enabled? */ 821 if (!(val & 1)) 822 return; 823 base = val & 0xfffc; 824 if (dynsize) { 825 /* 826 * This is not correct. It is 16, 32 or 64 bytes depending on 827 * register D31:F0:ADh bits 5:4. 828 * 829 * But this gets us at least _part_ of it. 830 */ 831 size = 16; 832 } else { 833 size = 128; 834 } 835 base &= ~(size-1); 836 837 /* 838 * Just print it out for now. We should reserve it after more 839 * debugging. 840 */ 841 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); 842 } 843 844 static void quirk_ich6_lpc(struct pci_dev *dev) 845 { 846 /* Shared ACPI/GPIO decode with all ICH6+ */ 847 ich6_lpc_acpi_gpio(dev); 848 849 /* ICH6-specific generic IO decode */ 850 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); 851 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); 852 } 853 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); 854 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); 855 856 static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, 857 const char *name) 858 { 859 u32 val; 860 u32 mask, base; 861 862 pci_read_config_dword(dev, reg, &val); 863 864 /* Enabled? */ 865 if (!(val & 1)) 866 return; 867 868 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */ 869 base = val & 0xfffc; 870 mask = (val >> 16) & 0xfc; 871 mask |= 3; 872 873 /* 874 * Just print it out for now. We should reserve it after more 875 * debugging. 876 */ 877 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); 878 } 879 880 /* ICH7-10 has the same common LPC generic IO decode registers */ 881 static void quirk_ich7_lpc(struct pci_dev *dev) 882 { 883 /* We share the common ACPI/GPIO decode with ICH6 */ 884 ich6_lpc_acpi_gpio(dev); 885 886 /* And have 4 ICH7+ generic decodes */ 887 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); 888 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); 889 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); 890 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); 891 } 892 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); 893 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); 894 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); 895 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); 896 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); 897 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); 898 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); 899 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); 900 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); 901 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); 902 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); 903 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); 904 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); 905 906 /* 907 * VIA ACPI: One IO region pointed to by longword at 908 * 0x48 or 0x20 (256 bytes of ACPI registers) 909 */ 910 static void quirk_vt82c586_acpi(struct pci_dev *dev) 911 { 912 if (dev->revision & 0x10) 913 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES, 914 "vt82c586 ACPI"); 915 } 916 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); 917 918 /* 919 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at 920 * 0x48 (256 bytes of ACPI registers) 921 * 0x70 (128 bytes of hardware monitoring register) 922 * 0x90 (16 bytes of SMB registers) 923 */ 924 static void quirk_vt82c686_acpi(struct pci_dev *dev) 925 { 926 quirk_vt82c586_acpi(dev); 927 928 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1, 929 "vt82c686 HW-mon"); 930 931 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB"); 932 } 933 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); 934 935 /* 936 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at 937 * 0x88 (128 bytes of power management registers) 938 * 0xd0 (16 bytes of SMB registers) 939 */ 940 static void quirk_vt8235_acpi(struct pci_dev *dev) 941 { 942 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); 943 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB"); 944 } 945 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); 946 947 /* 948 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast 949 * back-to-back: Disable fast back-to-back on the secondary bus segment 950 */ 951 static void quirk_xio2000a(struct pci_dev *dev) 952 { 953 struct pci_dev *pdev; 954 u16 command; 955 956 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n"); 957 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { 958 pci_read_config_word(pdev, PCI_COMMAND, &command); 959 if (command & PCI_COMMAND_FAST_BACK) 960 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK); 961 } 962 } 963 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A, 964 quirk_xio2000a); 965 966 #ifdef CONFIG_X86_IO_APIC 967 968 #include <asm/io_apic.h> 969 970 /* 971 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip 972 * devices to the external APIC. 973 * 974 * TODO: When we have device-specific interrupt routers, this code will go 975 * away from quirks. 976 */ 977 static void quirk_via_ioapic(struct pci_dev *dev) 978 { 979 u8 tmp; 980 981 if (nr_ioapics < 1) 982 tmp = 0; /* nothing routed to external APIC */ 983 else 984 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ 985 986 pci_info(dev, "%s VIA external APIC routing\n", 987 tmp ? "Enabling" : "Disabling"); 988 989 /* Offset 0x58: External APIC IRQ output control */ 990 pci_write_config_byte(dev, 0x58, tmp); 991 } 992 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 993 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); 994 995 /* 996 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit. 997 * This leads to doubled level interrupt rates. 998 * Set this bit to get rid of cycle wastage. 999 * Otherwise uncritical. 1000 */ 1001 static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) 1002 { 1003 u8 misc_control2; 1004 #define BYPASS_APIC_DEASSERT 8 1005 1006 pci_read_config_byte(dev, 0x5B, &misc_control2); 1007 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { 1008 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); 1009 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); 1010 } 1011 } 1012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 1013 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); 1014 1015 /* 1016 * The AMD IO-APIC can hang the box when an APIC IRQ is masked. 1017 * We check all revs >= B0 (yet not in the pre production!) as the bug 1018 * is currently marked NoFix 1019 * 1020 * We have multiple reports of hangs with this chipset that went away with 1021 * noapic specified. For the moment we assume it's the erratum. We may be wrong 1022 * of course. However the advice is demonstrably good even if so. 1023 */ 1024 static void quirk_amd_ioapic(struct pci_dev *dev) 1025 { 1026 if (dev->revision >= 0x02) { 1027 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); 1028 pci_warn(dev, " : booting with the \"noapic\" option\n"); 1029 } 1030 } 1031 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); 1032 #endif /* CONFIG_X86_IO_APIC */ 1033 1034 #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS) 1035 1036 static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev) 1037 { 1038 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */ 1039 if (dev->subsystem_device == 0xa118) 1040 dev->sriov->link = dev->devfn; 1041 } 1042 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link); 1043 #endif 1044 1045 /* 1046 * Some settings of MMRBC can lead to data corruption so block changes. 1047 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide 1048 */ 1049 static void quirk_amd_8131_mmrbc(struct pci_dev *dev) 1050 { 1051 if (dev->subordinate && dev->revision <= 0x12) { 1052 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n", 1053 dev->revision); 1054 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; 1055 } 1056 } 1057 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); 1058 1059 /* 1060 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up 1061 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register 1062 * at all. Therefore it seems like setting the pci_dev's IRQ to the value 1063 * of the ACPI SCI interrupt is only done for convenience. 1064 * -jgarzik 1065 */ 1066 static void quirk_via_acpi(struct pci_dev *d) 1067 { 1068 u8 irq; 1069 1070 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */ 1071 pci_read_config_byte(d, 0x42, &irq); 1072 irq &= 0xf; 1073 if (irq && (irq != 2)) 1074 d->irq = irq; 1075 } 1076 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); 1077 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); 1078 1079 /* VIA bridges which have VLink */ 1080 static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; 1081 1082 static void quirk_via_bridge(struct pci_dev *dev) 1083 { 1084 /* See what bridge we have and find the device ranges */ 1085 switch (dev->device) { 1086 case PCI_DEVICE_ID_VIA_82C686: 1087 /* 1088 * The VT82C686 is special; it attaches to PCI and can have 1089 * any device number. All its subdevices are functions of 1090 * that single device. 1091 */ 1092 via_vlink_dev_lo = PCI_SLOT(dev->devfn); 1093 via_vlink_dev_hi = PCI_SLOT(dev->devfn); 1094 break; 1095 case PCI_DEVICE_ID_VIA_8237: 1096 case PCI_DEVICE_ID_VIA_8237A: 1097 via_vlink_dev_lo = 15; 1098 break; 1099 case PCI_DEVICE_ID_VIA_8235: 1100 via_vlink_dev_lo = 16; 1101 break; 1102 case PCI_DEVICE_ID_VIA_8231: 1103 case PCI_DEVICE_ID_VIA_8233_0: 1104 case PCI_DEVICE_ID_VIA_8233A: 1105 case PCI_DEVICE_ID_VIA_8233C_0: 1106 via_vlink_dev_lo = 17; 1107 break; 1108 } 1109 } 1110 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); 1111 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); 1112 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); 1113 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); 1114 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); 1115 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); 1116 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); 1117 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); 1118 1119 /* 1120 * quirk_via_vlink - VIA VLink IRQ number update 1121 * @dev: PCI device 1122 * 1123 * If the device we are dealing with is on a PIC IRQ we need to ensure that 1124 * the IRQ line register which usually is not relevant for PCI cards, is 1125 * actually written so that interrupts get sent to the right place. 1126 * 1127 * We only do this on systems where a VIA south bridge was detected, and 1128 * only for VIA devices on the motherboard (see quirk_via_bridge above). 1129 */ 1130 static void quirk_via_vlink(struct pci_dev *dev) 1131 { 1132 u8 irq, new_irq; 1133 1134 /* Check if we have VLink at all */ 1135 if (via_vlink_dev_lo == -1) 1136 return; 1137 1138 new_irq = dev->irq; 1139 1140 /* Don't quirk interrupts outside the legacy IRQ range */ 1141 if (!new_irq || new_irq > 15) 1142 return; 1143 1144 /* Internal device ? */ 1145 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || 1146 PCI_SLOT(dev->devfn) < via_vlink_dev_lo) 1147 return; 1148 1149 /* 1150 * This is an internal VLink device on a PIC interrupt. The BIOS 1151 * ought to have set this but may not have, so we redo it. 1152 */ 1153 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 1154 if (new_irq != irq) { 1155 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n", 1156 irq, new_irq); 1157 udelay(15); /* unknown if delay really needed */ 1158 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 1159 } 1160 } 1161 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); 1162 1163 /* 1164 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID 1165 * of VT82C597 for backward compatibility. We need to switch it off to be 1166 * able to recognize the real type of the chip. 1167 */ 1168 static void quirk_vt82c598_id(struct pci_dev *dev) 1169 { 1170 pci_write_config_byte(dev, 0xfc, 0); 1171 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); 1172 } 1173 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); 1174 1175 /* 1176 * CardBus controllers have a legacy base address that enables them to 1177 * respond as i82365 pcmcia controllers. We don't want them to do this 1178 * even if the Linux CardBus driver is not loaded, because the Linux i82365 1179 * driver does not (and should not) handle CardBus. 1180 */ 1181 static void quirk_cardbus_legacy(struct pci_dev *dev) 1182 { 1183 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); 1184 } 1185 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID, 1186 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); 1187 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, 1188 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); 1189 1190 /* 1191 * Following the PCI ordering rules is optional on the AMD762. I'm not sure 1192 * what the designers were smoking but let's not inhale... 1193 * 1194 * To be fair to AMD, it follows the spec by default, it's BIOS people who 1195 * turn it off! 1196 */ 1197 static void quirk_amd_ordering(struct pci_dev *dev) 1198 { 1199 u32 pcic; 1200 pci_read_config_dword(dev, 0x4C, &pcic); 1201 if ((pcic & 6) != 6) { 1202 pcic |= 6; 1203 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); 1204 pci_write_config_dword(dev, 0x4C, pcic); 1205 pci_read_config_dword(dev, 0x84, &pcic); 1206 pcic |= (1 << 23); /* Required in this mode */ 1207 pci_write_config_dword(dev, 0x84, pcic); 1208 } 1209 } 1210 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 1211 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); 1212 1213 /* 1214 * DreamWorks-provided workaround for Dunord I-3000 problem 1215 * 1216 * This card decodes and responds to addresses not apparently assigned to 1217 * it. We force a larger allocation to ensure that nothing gets put too 1218 * close to it. 1219 */ 1220 static void quirk_dunord(struct pci_dev *dev) 1221 { 1222 struct resource *r = &dev->resource[1]; 1223 1224 r->flags |= IORESOURCE_UNSET; 1225 r->start = 0; 1226 r->end = 0xffffff; 1227 } 1228 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); 1229 1230 /* 1231 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive 1232 * decoding (transparent), and does indicate this in the ProgIf. 1233 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01. 1234 */ 1235 static void quirk_transparent_bridge(struct pci_dev *dev) 1236 { 1237 dev->transparent = 1; 1238 } 1239 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); 1240 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); 1241 1242 /* 1243 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce 1244 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets 1245 * found at http://www.national.com/analog for info on what these bits do. 1246 * <christer@weinigel.se> 1247 */ 1248 static void quirk_mediagx_master(struct pci_dev *dev) 1249 { 1250 u8 reg; 1251 1252 pci_read_config_byte(dev, 0x41, ®); 1253 if (reg & 2) { 1254 reg &= ~2; 1255 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", 1256 reg); 1257 pci_write_config_byte(dev, 0x41, reg); 1258 } 1259 } 1260 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1261 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); 1262 1263 /* 1264 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but 1265 * in the odd case it is not the results are corruption hence the presence 1266 * of a Linux check. 1267 */ 1268 static void quirk_disable_pxb(struct pci_dev *pdev) 1269 { 1270 u16 config; 1271 1272 if (pdev->revision != 0x04) /* Only C0 requires this */ 1273 return; 1274 pci_read_config_word(pdev, 0x40, &config); 1275 if (config & (1<<6)) { 1276 config &= ~(1<<6); 1277 pci_write_config_word(pdev, 0x40, config); 1278 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n"); 1279 } 1280 } 1281 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1282 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); 1283 1284 static void quirk_amd_ide_mode(struct pci_dev *pdev) 1285 { 1286 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */ 1287 u8 tmp; 1288 1289 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); 1290 if (tmp == 0x01) { 1291 pci_read_config_byte(pdev, 0x40, &tmp); 1292 pci_write_config_byte(pdev, 0x40, tmp|1); 1293 pci_write_config_byte(pdev, 0x9, 1); 1294 pci_write_config_byte(pdev, 0xa, 6); 1295 pci_write_config_byte(pdev, 0x40, tmp); 1296 1297 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; 1298 pci_info(pdev, "set SATA to AHCI mode\n"); 1299 } 1300 } 1301 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1302 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); 1303 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1304 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); 1305 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1306 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); 1307 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); 1308 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); 1309 1310 /* Serverworks CSB5 IDE does not fully support native mode */ 1311 static void quirk_svwks_csb5ide(struct pci_dev *pdev) 1312 { 1313 u8 prog; 1314 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1315 if (prog & 5) { 1316 prog &= ~5; 1317 pdev->class &= ~5; 1318 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1319 /* PCI layer will sort out resources */ 1320 } 1321 } 1322 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); 1323 1324 /* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */ 1325 static void quirk_ide_samemode(struct pci_dev *pdev) 1326 { 1327 u8 prog; 1328 1329 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); 1330 1331 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { 1332 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n"); 1333 prog &= ~5; 1334 pdev->class &= ~5; 1335 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 1336 } 1337 } 1338 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 1339 1340 /* Some ATA devices break if put into D3 */ 1341 static void quirk_no_ata_d3(struct pci_dev *pdev) 1342 { 1343 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; 1344 } 1345 /* Quirk the legacy ATA devices only. The AHCI ones are ok */ 1346 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, 1347 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1348 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 1349 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1350 /* ALi loses some register settings that we cannot then restore */ 1351 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, 1352 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1353 /* VIA comes back fine but we need to keep it alive or ACPI GTM failures 1354 occur when mode detecting */ 1355 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, 1356 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); 1357 1358 /* 1359 * This was originally an Alpha-specific thing, but it really fits here. 1360 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 1361 */ 1362 static void quirk_eisa_bridge(struct pci_dev *dev) 1363 { 1364 dev->class = PCI_CLASS_BRIDGE_EISA << 8; 1365 } 1366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); 1367 1368 /* 1369 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge 1370 * is not activated. The myth is that Asus said that they do not want the 1371 * users to be irritated by just another PCI Device in the Win98 device 1372 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors 1373 * package 2.7.0 for details) 1374 * 1375 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC 1376 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 1377 * becomes necessary to do this tweak in two steps -- the chosen trigger 1378 * is either the Host bridge (preferred) or on-board VGA controller. 1379 * 1380 * Note that we used to unhide the SMBus that way on Toshiba laptops 1381 * (Satellite A40 and Tecra M2) but then found that the thermal management 1382 * was done by SMM code, which could cause unsynchronized concurrent 1383 * accesses to the SMBus registers, with potentially bad effects. Thus you 1384 * should be very careful when adding new entries: if SMM is accessing the 1385 * Intel SMBus, this is a very good reason to leave it hidden. 1386 * 1387 * Likewise, many recent laptops use ACPI for thermal management. If the 1388 * ACPI DSDT code accesses the SMBus, then Linux should not access it 1389 * natively, and keeping the SMBus hidden is the right thing to do. If you 1390 * are about to add an entry in the table below, please first disassemble 1391 * the DSDT and double-check that there is no code accessing the SMBus. 1392 */ 1393 static int asus_hides_smbus; 1394 1395 static void asus_hides_smbus_hostbridge(struct pci_dev *dev) 1396 { 1397 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1398 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) 1399 switch (dev->subsystem_device) { 1400 case 0x8025: /* P4B-LX */ 1401 case 0x8070: /* P4B */ 1402 case 0x8088: /* P4B533 */ 1403 case 0x1626: /* L3C notebook */ 1404 asus_hides_smbus = 1; 1405 } 1406 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) 1407 switch (dev->subsystem_device) { 1408 case 0x80b1: /* P4GE-V */ 1409 case 0x80b2: /* P4PE */ 1410 case 0x8093: /* P4B533-V */ 1411 asus_hides_smbus = 1; 1412 } 1413 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) 1414 switch (dev->subsystem_device) { 1415 case 0x8030: /* P4T533 */ 1416 asus_hides_smbus = 1; 1417 } 1418 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) 1419 switch (dev->subsystem_device) { 1420 case 0x8070: /* P4G8X Deluxe */ 1421 asus_hides_smbus = 1; 1422 } 1423 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) 1424 switch (dev->subsystem_device) { 1425 case 0x80c9: /* PU-DLS */ 1426 asus_hides_smbus = 1; 1427 } 1428 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) 1429 switch (dev->subsystem_device) { 1430 case 0x1751: /* M2N notebook */ 1431 case 0x1821: /* M5N notebook */ 1432 case 0x1897: /* A6L notebook */ 1433 asus_hides_smbus = 1; 1434 } 1435 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1436 switch (dev->subsystem_device) { 1437 case 0x184b: /* W1N notebook */ 1438 case 0x186a: /* M6Ne notebook */ 1439 asus_hides_smbus = 1; 1440 } 1441 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1442 switch (dev->subsystem_device) { 1443 case 0x80f2: /* P4P800-X */ 1444 asus_hides_smbus = 1; 1445 } 1446 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) 1447 switch (dev->subsystem_device) { 1448 case 0x1882: /* M6V notebook */ 1449 case 0x1977: /* A6VA notebook */ 1450 asus_hides_smbus = 1; 1451 } 1452 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 1453 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1454 switch (dev->subsystem_device) { 1455 case 0x088C: /* HP Compaq nc8000 */ 1456 case 0x0890: /* HP Compaq nc6000 */ 1457 asus_hides_smbus = 1; 1458 } 1459 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) 1460 switch (dev->subsystem_device) { 1461 case 0x12bc: /* HP D330L */ 1462 case 0x12bd: /* HP D530 */ 1463 case 0x006a: /* HP Compaq nx9500 */ 1464 asus_hides_smbus = 1; 1465 } 1466 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) 1467 switch (dev->subsystem_device) { 1468 case 0x12bf: /* HP xw4100 */ 1469 asus_hides_smbus = 1; 1470 } 1471 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { 1472 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1473 switch (dev->subsystem_device) { 1474 case 0xC00C: /* Samsung P35 notebook */ 1475 asus_hides_smbus = 1; 1476 } 1477 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { 1478 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) 1479 switch (dev->subsystem_device) { 1480 case 0x0058: /* Compaq Evo N620c */ 1481 asus_hides_smbus = 1; 1482 } 1483 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) 1484 switch (dev->subsystem_device) { 1485 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ 1486 /* Motherboard doesn't have Host bridge 1487 * subvendor/subdevice IDs, therefore checking 1488 * its on-board VGA controller */ 1489 asus_hides_smbus = 1; 1490 } 1491 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) 1492 switch (dev->subsystem_device) { 1493 case 0x00b8: /* Compaq Evo D510 CMT */ 1494 case 0x00b9: /* Compaq Evo D510 SFF */ 1495 case 0x00ba: /* Compaq Evo D510 USDT */ 1496 /* Motherboard doesn't have Host bridge 1497 * subvendor/subdevice IDs and on-board VGA 1498 * controller is disabled if an AGP card is 1499 * inserted, therefore checking USB UHCI 1500 * Controller #1 */ 1501 asus_hides_smbus = 1; 1502 } 1503 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) 1504 switch (dev->subsystem_device) { 1505 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ 1506 /* Motherboard doesn't have host bridge 1507 * subvendor/subdevice IDs, therefore checking 1508 * its on-board VGA controller */ 1509 asus_hides_smbus = 1; 1510 } 1511 } 1512 } 1513 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); 1514 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); 1515 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); 1516 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); 1517 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); 1518 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); 1519 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); 1520 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); 1521 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); 1522 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); 1523 1524 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); 1525 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); 1526 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); 1527 1528 static void asus_hides_smbus_lpc(struct pci_dev *dev) 1529 { 1530 u16 val; 1531 1532 if (likely(!asus_hides_smbus)) 1533 return; 1534 1535 pci_read_config_word(dev, 0xF2, &val); 1536 if (val & 0x8) { 1537 pci_write_config_word(dev, 0xF2, val & (~0x8)); 1538 pci_read_config_word(dev, 0xF2, &val); 1539 if (val & 0x8) 1540 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", 1541 val); 1542 else 1543 pci_info(dev, "Enabled i801 SMBus device\n"); 1544 } 1545 } 1546 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1547 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1548 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1549 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1550 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1551 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1552 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1553 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); 1554 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); 1555 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); 1556 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); 1557 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); 1558 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); 1559 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); 1560 1561 /* It appears we just have one such device. If not, we have a warning */ 1562 static void __iomem *asus_rcba_base; 1563 static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) 1564 { 1565 u32 rcba; 1566 1567 if (likely(!asus_hides_smbus)) 1568 return; 1569 WARN_ON(asus_rcba_base); 1570 1571 pci_read_config_dword(dev, 0xF0, &rcba); 1572 /* use bits 31:14, 16 kB aligned */ 1573 asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000); 1574 if (asus_rcba_base == NULL) 1575 return; 1576 } 1577 1578 static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) 1579 { 1580 u32 val; 1581 1582 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1583 return; 1584 1585 /* read the Function Disable register, dword mode only */ 1586 val = readl(asus_rcba_base + 0x3418); 1587 1588 /* enable the SMBus device */ 1589 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); 1590 } 1591 1592 static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) 1593 { 1594 if (likely(!asus_hides_smbus || !asus_rcba_base)) 1595 return; 1596 1597 iounmap(asus_rcba_base); 1598 asus_rcba_base = NULL; 1599 pci_info(dev, "Enabled ICH6/i801 SMBus device\n"); 1600 } 1601 1602 static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) 1603 { 1604 asus_hides_smbus_lpc_ich6_suspend(dev); 1605 asus_hides_smbus_lpc_ich6_resume_early(dev); 1606 asus_hides_smbus_lpc_ich6_resume(dev); 1607 } 1608 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); 1609 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); 1610 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); 1611 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); 1612 1613 /* SiS 96x south bridge: BIOS typically hides SMBus device... */ 1614 static void quirk_sis_96x_smbus(struct pci_dev *dev) 1615 { 1616 u8 val = 0; 1617 pci_read_config_byte(dev, 0x77, &val); 1618 if (val & 0x10) { 1619 pci_info(dev, "Enabling SiS 96x SMBus\n"); 1620 pci_write_config_byte(dev, 0x77, val & ~0x10); 1621 } 1622 } 1623 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1624 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1625 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1626 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1627 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); 1628 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); 1629 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); 1630 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); 1631 1632 /* 1633 * ... This is further complicated by the fact that some SiS96x south 1634 * bridges pretend to be 85C503/5513 instead. In that case see if we 1635 * spotted a compatible north bridge to make sure. 1636 * (pci_find_device() doesn't work yet) 1637 * 1638 * We can also enable the sis96x bit in the discovery register.. 1639 */ 1640 #define SIS_DETECT_REGISTER 0x40 1641 1642 static void quirk_sis_503(struct pci_dev *dev) 1643 { 1644 u8 reg; 1645 u16 devid; 1646 1647 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); 1648 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); 1649 pci_read_config_word(dev, PCI_DEVICE_ID, &devid); 1650 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { 1651 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); 1652 return; 1653 } 1654 1655 /* 1656 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case 1657 * it has already been processed. (Depends on link order, which is 1658 * apparently not guaranteed) 1659 */ 1660 dev->device = devid; 1661 quirk_sis_96x_smbus(dev); 1662 } 1663 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1664 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); 1665 1666 /* 1667 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller 1668 * and MC97 modem controller are disabled when a second PCI soundcard is 1669 * present. This patch, tweaking the VT8237 ISA bridge, enables them. 1670 * -- bjd 1671 */ 1672 static void asus_hides_ac97_lpc(struct pci_dev *dev) 1673 { 1674 u8 val; 1675 int asus_hides_ac97 = 0; 1676 1677 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { 1678 if (dev->device == PCI_DEVICE_ID_VIA_8237) 1679 asus_hides_ac97 = 1; 1680 } 1681 1682 if (!asus_hides_ac97) 1683 return; 1684 1685 pci_read_config_byte(dev, 0x50, &val); 1686 if (val & 0xc0) { 1687 pci_write_config_byte(dev, 0x50, val & (~0xc0)); 1688 pci_read_config_byte(dev, 0x50, &val); 1689 if (val & 0xc0) 1690 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", 1691 val); 1692 else 1693 pci_info(dev, "Enabled onboard AC97/MC97 devices\n"); 1694 } 1695 } 1696 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1697 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); 1698 1699 #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) 1700 1701 /* 1702 * If we are using libata we can drive this chip properly but must do this 1703 * early on to make the additional device appear during the PCI scanning. 1704 */ 1705 static void quirk_jmicron_ata(struct pci_dev *pdev) 1706 { 1707 u32 conf1, conf5, class; 1708 u8 hdr; 1709 1710 /* Only poke fn 0 */ 1711 if (PCI_FUNC(pdev->devfn)) 1712 return; 1713 1714 pci_read_config_dword(pdev, 0x40, &conf1); 1715 pci_read_config_dword(pdev, 0x80, &conf5); 1716 1717 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ 1718 conf5 &= ~(1 << 24); /* Clear bit 24 */ 1719 1720 switch (pdev->device) { 1721 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */ 1722 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */ 1723 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */ 1724 /* The controller should be in single function ahci mode */ 1725 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ 1726 break; 1727 1728 case PCI_DEVICE_ID_JMICRON_JMB365: 1729 case PCI_DEVICE_ID_JMICRON_JMB366: 1730 /* Redirect IDE second PATA port to the right spot */ 1731 conf5 |= (1 << 24); 1732 fallthrough; 1733 case PCI_DEVICE_ID_JMICRON_JMB361: 1734 case PCI_DEVICE_ID_JMICRON_JMB363: 1735 case PCI_DEVICE_ID_JMICRON_JMB369: 1736 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ 1737 /* Set the class codes correctly and then direct IDE 0 */ 1738 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ 1739 break; 1740 1741 case PCI_DEVICE_ID_JMICRON_JMB368: 1742 /* The controller should be in single function IDE mode */ 1743 conf1 |= 0x00C00000; /* Set 22, 23 */ 1744 break; 1745 } 1746 1747 pci_write_config_dword(pdev, 0x40, conf1); 1748 pci_write_config_dword(pdev, 0x80, conf5); 1749 1750 /* Update pdev accordingly */ 1751 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); 1752 pdev->hdr_type = hdr & 0x7f; 1753 pdev->multifunction = !!(hdr & 0x80); 1754 1755 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); 1756 pdev->class = class >> 8; 1757 } 1758 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1759 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1760 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1761 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1762 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1763 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1764 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1765 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1766 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1767 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); 1768 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); 1769 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); 1770 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); 1771 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); 1772 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); 1773 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); 1774 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); 1775 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); 1776 1777 #endif 1778 1779 static void quirk_jmicron_async_suspend(struct pci_dev *dev) 1780 { 1781 if (dev->multifunction) { 1782 device_disable_async_suspend(&dev->dev); 1783 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n"); 1784 } 1785 } 1786 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend); 1787 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend); 1788 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend); 1789 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend); 1790 1791 #ifdef CONFIG_X86_IO_APIC 1792 static void quirk_alder_ioapic(struct pci_dev *pdev) 1793 { 1794 int i; 1795 1796 if ((pdev->class >> 8) != 0xff00) 1797 return; 1798 1799 /* 1800 * The first BAR is the location of the IO-APIC... we must 1801 * not touch this (and it's already covered by the fixmap), so 1802 * forcibly insert it into the resource tree. 1803 */ 1804 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) 1805 insert_resource(&iomem_resource, &pdev->resource[0]); 1806 1807 /* 1808 * The next five BARs all seem to be rubbish, so just clean 1809 * them out. 1810 */ 1811 for (i = 1; i < PCI_STD_NUM_BARS; i++) 1812 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); 1813 } 1814 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); 1815 #endif 1816 1817 static void quirk_no_msi(struct pci_dev *dev) 1818 { 1819 pci_info(dev, "avoiding MSI to work around a hardware defect\n"); 1820 dev->no_msi = 1; 1821 } 1822 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4386, quirk_no_msi); 1823 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4387, quirk_no_msi); 1824 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4388, quirk_no_msi); 1825 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4389, quirk_no_msi); 1826 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438a, quirk_no_msi); 1827 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438b, quirk_no_msi); 1828 1829 static void quirk_pcie_mch(struct pci_dev *pdev) 1830 { 1831 pdev->no_msi = 1; 1832 } 1833 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); 1834 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); 1835 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); 1836 1837 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch); 1838 1839 /* 1840 * HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are 1841 * actually on the AMBA bus. These fake PCI devices can support SVA via 1842 * SMMU stall feature, by setting dma-can-stall for ACPI platforms. 1843 * 1844 * Normally stalling must not be enabled for PCI devices, since it would 1845 * break the PCI requirement for free-flowing writes and may lead to 1846 * deadlock. We expect PCI devices to support ATS and PRI if they want to 1847 * be fault-tolerant, so there's no ACPI binding to describe anything else, 1848 * even when a "PCI" device turns out to be a regular old SoC device 1849 * dressed up as a RCiEP and normal rules don't apply. 1850 */ 1851 static void quirk_huawei_pcie_sva(struct pci_dev *pdev) 1852 { 1853 struct property_entry properties[] = { 1854 PROPERTY_ENTRY_BOOL("dma-can-stall"), 1855 {}, 1856 }; 1857 1858 if (pdev->revision != 0x21 && pdev->revision != 0x30) 1859 return; 1860 1861 pdev->pasid_no_tlp = 1; 1862 1863 /* 1864 * Set the dma-can-stall property on ACPI platforms. Device tree 1865 * can set it directly. 1866 */ 1867 if (!pdev->dev.of_node && 1868 device_create_managed_software_node(&pdev->dev, properties, NULL)) 1869 pci_warn(pdev, "could not add stall property"); 1870 } 1871 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva); 1872 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva); 1873 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva); 1874 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva); 1875 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva); 1876 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva); 1877 1878 /* 1879 * It's possible for the MSI to get corrupted if SHPC and ACPI are used 1880 * together on certain PXH-based systems. 1881 */ 1882 static void quirk_pcie_pxh(struct pci_dev *dev) 1883 { 1884 dev->no_msi = 1; 1885 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n"); 1886 } 1887 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); 1888 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); 1889 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); 1890 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); 1891 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); 1892 1893 /* 1894 * Some Intel PCI Express chipsets have trouble with downstream device 1895 * power management. 1896 */ 1897 static void quirk_intel_pcie_pm(struct pci_dev *dev) 1898 { 1899 pci_pm_d3hot_delay = 120; 1900 dev->no_d1d2 = 1; 1901 } 1902 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); 1903 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); 1904 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); 1905 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); 1906 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); 1907 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); 1908 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); 1909 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); 1910 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); 1911 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); 1912 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); 1913 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); 1914 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); 1915 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); 1916 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); 1917 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); 1918 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); 1919 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); 1920 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); 1921 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); 1922 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); 1923 1924 static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay) 1925 { 1926 if (dev->d3hot_delay >= delay) 1927 return; 1928 1929 dev->d3hot_delay = delay; 1930 pci_info(dev, "extending delay after power-on from D3hot to %d msec\n", 1931 dev->d3hot_delay); 1932 } 1933 1934 static void quirk_radeon_pm(struct pci_dev *dev) 1935 { 1936 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE && 1937 dev->subsystem_device == 0x00e2) 1938 quirk_d3hot_delay(dev, 20); 1939 } 1940 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm); 1941 1942 /* 1943 * NVIDIA Ampere-based HDA controllers can wedge the whole device if a bus 1944 * reset is performed too soon after transition to D0, extend d3hot_delay 1945 * to previous effective default for all NVIDIA HDA controllers. 1946 */ 1947 static void quirk_nvidia_hda_pm(struct pci_dev *dev) 1948 { 1949 quirk_d3hot_delay(dev, 20); 1950 } 1951 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 1952 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, 1953 quirk_nvidia_hda_pm); 1954 1955 /* 1956 * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle. 1957 * https://bugzilla.kernel.org/show_bug.cgi?id=205587 1958 * 1959 * The kernel attempts to transition these devices to D3cold, but that seems 1960 * to be ineffective on the platforms in question; the PCI device appears to 1961 * remain on in D3hot state. The D3hot-to-D0 transition then requires an 1962 * extended delay in order to succeed. 1963 */ 1964 static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev) 1965 { 1966 quirk_d3hot_delay(dev, 20); 1967 } 1968 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot); 1969 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot); 1970 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot); 1971 1972 #ifdef CONFIG_X86_IO_APIC 1973 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d) 1974 { 1975 noioapicreroute = 1; 1976 pr_info("%s detected: disable boot interrupt reroute\n", d->ident); 1977 1978 return 0; 1979 } 1980 1981 static const struct dmi_system_id boot_interrupt_dmi_table[] = { 1982 /* 1983 * Systems to exclude from boot interrupt reroute quirks 1984 */ 1985 { 1986 .callback = dmi_disable_ioapicreroute, 1987 .ident = "ASUSTek Computer INC. M2N-LR", 1988 .matches = { 1989 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."), 1990 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"), 1991 }, 1992 }, 1993 {} 1994 }; 1995 1996 /* 1997 * Boot interrupts on some chipsets cannot be turned off. For these chipsets, 1998 * remap the original interrupt in the Linux kernel to the boot interrupt, so 1999 * that a PCI device's interrupt handler is installed on the boot interrupt 2000 * line instead. 2001 */ 2002 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) 2003 { 2004 dmi_check_system(boot_interrupt_dmi_table); 2005 if (noioapicquirk || noioapicreroute) 2006 return; 2007 2008 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; 2009 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n", 2010 dev->vendor, dev->device); 2011 } 2012 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 2013 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 2014 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 2015 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 2016 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 2017 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 2018 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 2019 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 2020 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); 2021 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); 2022 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); 2023 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); 2024 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); 2025 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); 2026 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); 2027 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); 2028 2029 /* 2030 * On some chipsets we can disable the generation of legacy INTx boot 2031 * interrupts. 2032 */ 2033 2034 /* 2035 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no 2036 * 300641-004US, section 5.7.3. 2037 * 2038 * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003. 2039 * Core IO on Xeon E5 v2, see Intel order no 329188-003. 2040 * Core IO on Xeon E7 v2, see Intel order no 329595-002. 2041 * Core IO on Xeon E5 v3, see Intel order no 330784-003. 2042 * Core IO on Xeon E7 v3, see Intel order no 332315-001US. 2043 * Core IO on Xeon E5 v4, see Intel order no 333810-002US. 2044 * Core IO on Xeon E7 v4, see Intel order no 332315-001US. 2045 * Core IO on Xeon D-1500, see Intel order no 332051-001. 2046 * Core IO on Xeon Scalable, see Intel order no 610950. 2047 */ 2048 #define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */ 2049 #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) 2050 2051 #define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */ 2052 #define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25) 2053 2054 static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 2055 { 2056 u16 pci_config_word; 2057 u32 pci_config_dword; 2058 2059 if (noioapicquirk) 2060 return; 2061 2062 switch (dev->device) { 2063 case PCI_DEVICE_ID_INTEL_ESB_10: 2064 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, 2065 &pci_config_word); 2066 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; 2067 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, 2068 pci_config_word); 2069 break; 2070 case 0x3c28: /* Xeon E5 1600/2600/4600 */ 2071 case 0x0e28: /* Xeon E5/E7 V2 */ 2072 case 0x2f28: /* Xeon E5/E7 V3,V4 */ 2073 case 0x6f28: /* Xeon D-1500 */ 2074 case 0x2034: /* Xeon Scalable Family */ 2075 pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET, 2076 &pci_config_dword); 2077 pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH; 2078 pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET, 2079 pci_config_dword); 2080 break; 2081 default: 2082 return; 2083 } 2084 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", 2085 dev->vendor, dev->device); 2086 } 2087 /* 2088 * Device 29 Func 5 Device IDs of IO-APIC 2089 * containing ABAR—APIC1 Alternate Base Address Register 2090 */ 2091 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, 2092 quirk_disable_intel_boot_interrupt); 2093 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, 2094 quirk_disable_intel_boot_interrupt); 2095 2096 /* 2097 * Device 5 Func 0 Device IDs of Core IO modules/hubs 2098 * containing Coherent Interface Protocol Interrupt Control 2099 * 2100 * Device IDs obtained from volume 2 datasheets of commented 2101 * families above. 2102 */ 2103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28, 2104 quirk_disable_intel_boot_interrupt); 2105 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28, 2106 quirk_disable_intel_boot_interrupt); 2107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28, 2108 quirk_disable_intel_boot_interrupt); 2109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28, 2110 quirk_disable_intel_boot_interrupt); 2111 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034, 2112 quirk_disable_intel_boot_interrupt); 2113 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28, 2114 quirk_disable_intel_boot_interrupt); 2115 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28, 2116 quirk_disable_intel_boot_interrupt); 2117 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28, 2118 quirk_disable_intel_boot_interrupt); 2119 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28, 2120 quirk_disable_intel_boot_interrupt); 2121 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034, 2122 quirk_disable_intel_boot_interrupt); 2123 2124 /* Disable boot interrupts on HT-1000 */ 2125 #define BC_HT1000_FEATURE_REG 0x64 2126 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) 2127 #define BC_HT1000_MAP_IDX 0xC00 2128 #define BC_HT1000_MAP_DATA 0xC01 2129 2130 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) 2131 { 2132 u32 pci_config_dword; 2133 u8 irq; 2134 2135 if (noioapicquirk) 2136 return; 2137 2138 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); 2139 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | 2140 BC_HT1000_PIC_REGS_ENABLE); 2141 2142 for (irq = 0x10; irq < 0x10 + 32; irq++) { 2143 outb(irq, BC_HT1000_MAP_IDX); 2144 outb(0x00, BC_HT1000_MAP_DATA); 2145 } 2146 2147 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); 2148 2149 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", 2150 dev->vendor, dev->device); 2151 } 2152 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 2153 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); 2154 2155 /* Disable boot interrupts on AMD and ATI chipsets */ 2156 2157 /* 2158 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 2159 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode 2160 * (due to an erratum). 2161 */ 2162 #define AMD_813X_MISC 0x40 2163 #define AMD_813X_NOIOAMODE (1<<0) 2164 #define AMD_813X_REV_B1 0x12 2165 #define AMD_813X_REV_B2 0x13 2166 2167 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) 2168 { 2169 u32 pci_config_dword; 2170 2171 if (noioapicquirk) 2172 return; 2173 if ((dev->revision == AMD_813X_REV_B1) || 2174 (dev->revision == AMD_813X_REV_B2)) 2175 return; 2176 2177 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); 2178 pci_config_dword &= ~AMD_813X_NOIOAMODE; 2179 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); 2180 2181 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", 2182 dev->vendor, dev->device); 2183 } 2184 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 2185 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 2186 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 2187 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); 2188 2189 #define AMD_8111_PCI_IRQ_ROUTING 0x56 2190 2191 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) 2192 { 2193 u16 pci_config_word; 2194 2195 if (noioapicquirk) 2196 return; 2197 2198 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); 2199 if (!pci_config_word) { 2200 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n", 2201 dev->vendor, dev->device); 2202 return; 2203 } 2204 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); 2205 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", 2206 dev->vendor, dev->device); 2207 } 2208 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 2209 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); 2210 #endif /* CONFIG_X86_IO_APIC */ 2211 2212 /* 2213 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size 2214 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. 2215 * Re-allocate the region if needed... 2216 */ 2217 static void quirk_tc86c001_ide(struct pci_dev *dev) 2218 { 2219 struct resource *r = &dev->resource[0]; 2220 2221 if (r->start & 0x8) { 2222 r->flags |= IORESOURCE_UNSET; 2223 r->start = 0; 2224 r->end = 0xf; 2225 } 2226 } 2227 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, 2228 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, 2229 quirk_tc86c001_ide); 2230 2231 /* 2232 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the 2233 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o) 2234 * being read correctly if bit 7 of the base address is set. 2235 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128). 2236 * Re-allocate the regions to a 256-byte boundary if necessary. 2237 */ 2238 static void quirk_plx_pci9050(struct pci_dev *dev) 2239 { 2240 unsigned int bar; 2241 2242 /* Fixed in revision 2 (PCI 9052). */ 2243 if (dev->revision >= 2) 2244 return; 2245 for (bar = 0; bar <= 1; bar++) 2246 if (pci_resource_len(dev, bar) == 0x80 && 2247 (pci_resource_start(dev, bar) & 0x80)) { 2248 struct resource *r = &dev->resource[bar]; 2249 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", 2250 bar); 2251 r->flags |= IORESOURCE_UNSET; 2252 r->start = 0; 2253 r->end = 0xff; 2254 } 2255 } 2256 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, 2257 quirk_plx_pci9050); 2258 /* 2259 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others) 2260 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b, 2261 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c, 2262 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b. 2263 * 2264 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq" 2265 * driver. 2266 */ 2267 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050); 2268 DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050); 2269 2270 static void quirk_netmos(struct pci_dev *dev) 2271 { 2272 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; 2273 unsigned int num_serial = dev->subsystem_device & 0xf; 2274 2275 /* 2276 * These Netmos parts are multiport serial devices with optional 2277 * parallel ports. Even when parallel ports are present, they 2278 * are identified as class SERIAL, which means the serial driver 2279 * will claim them. To prevent this, mark them as class OTHER. 2280 * These combo devices should be claimed by parport_serial. 2281 * 2282 * The subdevice ID is of the form 0x00PS, where <P> is the number 2283 * of parallel ports and <S> is the number of serial ports. 2284 */ 2285 switch (dev->device) { 2286 case PCI_DEVICE_ID_NETMOS_9835: 2287 /* Well, this rule doesn't hold for the following 9835 device */ 2288 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && 2289 dev->subsystem_device == 0x0299) 2290 return; 2291 fallthrough; 2292 case PCI_DEVICE_ID_NETMOS_9735: 2293 case PCI_DEVICE_ID_NETMOS_9745: 2294 case PCI_DEVICE_ID_NETMOS_9845: 2295 case PCI_DEVICE_ID_NETMOS_9855: 2296 if (num_parallel) { 2297 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n", 2298 dev->device, num_parallel, num_serial); 2299 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | 2300 (dev->class & 0xff); 2301 } 2302 } 2303 } 2304 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, 2305 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos); 2306 2307 static void quirk_e100_interrupt(struct pci_dev *dev) 2308 { 2309 u16 command, pmcsr; 2310 u8 __iomem *csr; 2311 u8 cmd_hi; 2312 2313 switch (dev->device) { 2314 /* PCI IDs taken from drivers/net/e100.c */ 2315 case 0x1029: 2316 case 0x1030 ... 0x1034: 2317 case 0x1038 ... 0x103E: 2318 case 0x1050 ... 0x1057: 2319 case 0x1059: 2320 case 0x1064 ... 0x106B: 2321 case 0x1091 ... 0x1095: 2322 case 0x1209: 2323 case 0x1229: 2324 case 0x2449: 2325 case 0x2459: 2326 case 0x245D: 2327 case 0x27DC: 2328 break; 2329 default: 2330 return; 2331 } 2332 2333 /* 2334 * Some firmware hands off the e100 with interrupts enabled, 2335 * which can cause a flood of interrupts if packets are 2336 * received before the driver attaches to the device. So 2337 * disable all e100 interrupts here. The driver will 2338 * re-enable them when it's ready. 2339 */ 2340 pci_read_config_word(dev, PCI_COMMAND, &command); 2341 2342 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) 2343 return; 2344 2345 /* 2346 * Check that the device is in the D0 power state. If it's not, 2347 * there is no point to look any further. 2348 */ 2349 if (dev->pm_cap) { 2350 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); 2351 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) 2352 return; 2353 } 2354 2355 /* Convert from PCI bus to resource space. */ 2356 csr = ioremap(pci_resource_start(dev, 0), 8); 2357 if (!csr) { 2358 pci_warn(dev, "Can't map e100 registers\n"); 2359 return; 2360 } 2361 2362 cmd_hi = readb(csr + 3); 2363 if (cmd_hi == 0) { 2364 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n"); 2365 writeb(1, csr + 3); 2366 } 2367 2368 iounmap(csr); 2369 } 2370 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 2371 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt); 2372 2373 /* 2374 * The 82575 and 82598 may experience data corruption issues when transitioning 2375 * out of L0S. To prevent this we need to disable L0S on the PCIe link. 2376 */ 2377 static void quirk_disable_aspm_l0s(struct pci_dev *dev) 2378 { 2379 pci_info(dev, "Disabling L0s\n"); 2380 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); 2381 } 2382 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); 2383 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); 2384 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); 2385 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); 2386 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); 2387 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); 2388 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); 2389 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); 2390 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); 2391 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); 2392 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); 2393 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); 2394 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); 2395 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); 2396 2397 static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev) 2398 { 2399 pci_info(dev, "Disabling ASPM L0s/L1\n"); 2400 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1); 2401 } 2402 2403 /* 2404 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the 2405 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected; 2406 * disable both L0s and L1 for now to be safe. 2407 */ 2408 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1); 2409 2410 /* 2411 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain 2412 * Link bit cleared after starting the link retrain process to allow this 2413 * process to finish. 2414 * 2415 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the 2416 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf. 2417 */ 2418 static void quirk_enable_clear_retrain_link(struct pci_dev *dev) 2419 { 2420 dev->clear_retrain_link = 1; 2421 pci_info(dev, "Enable PCIe Retrain Link quirk\n"); 2422 } 2423 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link); 2424 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link); 2425 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link); 2426 2427 static void fixup_rev1_53c810(struct pci_dev *dev) 2428 { 2429 u32 class = dev->class; 2430 2431 /* 2432 * rev 1 ncr53c810 chips don't set the class at all which means 2433 * they don't get their resources remapped. Fix that here. 2434 */ 2435 if (class) 2436 return; 2437 2438 dev->class = PCI_CLASS_STORAGE_SCSI << 8; 2439 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n", 2440 class, dev->class); 2441 } 2442 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); 2443 2444 /* Enable 1k I/O space granularity on the Intel P64H2 */ 2445 static void quirk_p64h2_1k_io(struct pci_dev *dev) 2446 { 2447 u16 en1k; 2448 2449 pci_read_config_word(dev, 0x40, &en1k); 2450 2451 if (en1k & 0x200) { 2452 pci_info(dev, "Enable I/O Space to 1KB granularity\n"); 2453 dev->io_window_1k = 1; 2454 } 2455 } 2456 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); 2457 2458 /* 2459 * Under some circumstances, AER is not linked with extended capabilities. 2460 * Force it to be linked by setting the corresponding control bit in the 2461 * config space. 2462 */ 2463 static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) 2464 { 2465 uint8_t b; 2466 2467 if (pci_read_config_byte(dev, 0xf41, &b) == 0) { 2468 if (!(b & 0x20)) { 2469 pci_write_config_byte(dev, 0xf41, b | 0x20); 2470 pci_info(dev, "Linking AER extended capability\n"); 2471 } 2472 } 2473 } 2474 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2475 quirk_nvidia_ck804_pcie_aer_ext_cap); 2476 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2477 quirk_nvidia_ck804_pcie_aer_ext_cap); 2478 2479 static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) 2480 { 2481 /* 2482 * Disable PCI Bus Parking and PCI Master read caching on CX700 2483 * which causes unspecified timing errors with a VT6212L on the PCI 2484 * bus leading to USB2.0 packet loss. 2485 * 2486 * This quirk is only enabled if a second (on the external PCI bus) 2487 * VT6212L is found -- the CX700 core itself also contains a USB 2488 * host controller with the same PCI ID as the VT6212L. 2489 */ 2490 2491 /* Count VT6212L instances */ 2492 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA, 2493 PCI_DEVICE_ID_VIA_8235_USB_2, NULL); 2494 uint8_t b; 2495 2496 /* 2497 * p should contain the first (internal) VT6212L -- see if we have 2498 * an external one by searching again. 2499 */ 2500 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p); 2501 if (!p) 2502 return; 2503 pci_dev_put(p); 2504 2505 if (pci_read_config_byte(dev, 0x76, &b) == 0) { 2506 if (b & 0x40) { 2507 /* Turn off PCI Bus Parking */ 2508 pci_write_config_byte(dev, 0x76, b ^ 0x40); 2509 2510 pci_info(dev, "Disabling VIA CX700 PCI parking\n"); 2511 } 2512 } 2513 2514 if (pci_read_config_byte(dev, 0x72, &b) == 0) { 2515 if (b != 0) { 2516 /* Turn off PCI Master read caching */ 2517 pci_write_config_byte(dev, 0x72, 0x0); 2518 2519 /* Set PCI Master Bus time-out to "1x16 PCLK" */ 2520 pci_write_config_byte(dev, 0x75, 0x1); 2521 2522 /* Disable "Read FIFO Timer" */ 2523 pci_write_config_byte(dev, 0x77, 0x0); 2524 2525 pci_info(dev, "Disabling VIA CX700 PCI caching\n"); 2526 } 2527 } 2528 } 2529 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); 2530 2531 static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev) 2532 { 2533 u32 rev; 2534 2535 pci_read_config_dword(dev, 0xf4, &rev); 2536 2537 /* Only CAP the MRRS if the device is a 5719 A0 */ 2538 if (rev == 0x05719000) { 2539 int readrq = pcie_get_readrq(dev); 2540 if (readrq > 2048) 2541 pcie_set_readrq(dev, 2048); 2542 } 2543 } 2544 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM, 2545 PCI_DEVICE_ID_TIGON3_5719, 2546 quirk_brcm_5719_limit_mrrs); 2547 2548 /* 2549 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to 2550 * hide device 6 which configures the overflow device access containing the 2551 * DRBs - this is where we expose device 6. 2552 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm 2553 */ 2554 static void quirk_unhide_mch_dev6(struct pci_dev *dev) 2555 { 2556 u8 reg; 2557 2558 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { 2559 pci_info(dev, "Enabling MCH 'Overflow' Device\n"); 2560 pci_write_config_byte(dev, 0xF4, reg | 0x02); 2561 } 2562 } 2563 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, 2564 quirk_unhide_mch_dev6); 2565 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, 2566 quirk_unhide_mch_dev6); 2567 2568 #ifdef CONFIG_PCI_MSI 2569 /* 2570 * Some chipsets do not support MSI. We cannot easily rely on setting 2571 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some 2572 * other buses controlled by the chipset even if Linux is not aware of it. 2573 * Instead of setting the flag on all buses in the machine, simply disable 2574 * MSI globally. 2575 */ 2576 static void quirk_disable_all_msi(struct pci_dev *dev) 2577 { 2578 pci_no_msi(); 2579 pci_warn(dev, "MSI quirk detected; MSI disabled\n"); 2580 } 2581 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); 2582 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); 2583 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); 2584 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2585 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2586 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2587 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi); 2588 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi); 2589 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi); 2590 2591 /* Disable MSI on chipsets that are known to not support it */ 2592 static void quirk_disable_msi(struct pci_dev *dev) 2593 { 2594 if (dev->subordinate) { 2595 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n"); 2596 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; 2597 } 2598 } 2599 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2600 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); 2601 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); 2602 2603 /* 2604 * The APC bridge device in AMD 780 family northbridges has some random 2605 * OEM subsystem ID in its vendor ID register (erratum 18), so instead 2606 * we use the possible vendor/device IDs of the host bridge for the 2607 * declared quirk, and search for the APC bridge by slot number. 2608 */ 2609 static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge) 2610 { 2611 struct pci_dev *apc_bridge; 2612 2613 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0)); 2614 if (apc_bridge) { 2615 if (apc_bridge->device == 0x9602) 2616 quirk_disable_msi(apc_bridge); 2617 pci_dev_put(apc_bridge); 2618 } 2619 } 2620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi); 2621 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi); 2622 2623 /* 2624 * Go through the list of HyperTransport capabilities and return 1 if a HT 2625 * MSI capability is found and enabled. 2626 */ 2627 static int msi_ht_cap_enabled(struct pci_dev *dev) 2628 { 2629 int pos, ttl = PCI_FIND_CAP_TTL; 2630 2631 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2632 while (pos && ttl--) { 2633 u8 flags; 2634 2635 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2636 &flags) == 0) { 2637 pci_info(dev, "Found %s HT MSI Mapping\n", 2638 flags & HT_MSI_FLAGS_ENABLE ? 2639 "enabled" : "disabled"); 2640 return (flags & HT_MSI_FLAGS_ENABLE) != 0; 2641 } 2642 2643 pos = pci_find_next_ht_capability(dev, pos, 2644 HT_CAPTYPE_MSI_MAPPING); 2645 } 2646 return 0; 2647 } 2648 2649 /* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */ 2650 static void quirk_msi_ht_cap(struct pci_dev *dev) 2651 { 2652 if (!msi_ht_cap_enabled(dev)) 2653 quirk_disable_msi(dev); 2654 } 2655 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, 2656 quirk_msi_ht_cap); 2657 2658 /* 2659 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported 2660 * if the MSI capability is set in any of these mappings. 2661 */ 2662 static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) 2663 { 2664 struct pci_dev *pdev; 2665 2666 /* 2667 * Check HT MSI cap on this chipset and the root one. A single one 2668 * having MSI is enough to be sure that MSI is supported. 2669 */ 2670 pdev = pci_get_slot(dev->bus, 0); 2671 if (!pdev) 2672 return; 2673 if (!msi_ht_cap_enabled(pdev)) 2674 quirk_msi_ht_cap(dev); 2675 pci_dev_put(pdev); 2676 } 2677 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, 2678 quirk_nvidia_ck804_msi_ht_cap); 2679 2680 /* Force enable MSI mapping capability on HT bridges */ 2681 static void ht_enable_msi_mapping(struct pci_dev *dev) 2682 { 2683 int pos, ttl = PCI_FIND_CAP_TTL; 2684 2685 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2686 while (pos && ttl--) { 2687 u8 flags; 2688 2689 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2690 &flags) == 0) { 2691 pci_info(dev, "Enabling HT MSI Mapping\n"); 2692 2693 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2694 flags | HT_MSI_FLAGS_ENABLE); 2695 } 2696 pos = pci_find_next_ht_capability(dev, pos, 2697 HT_CAPTYPE_MSI_MAPPING); 2698 } 2699 } 2700 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 2701 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, 2702 ht_enable_msi_mapping); 2703 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, 2704 ht_enable_msi_mapping); 2705 2706 /* 2707 * The P5N32-SLI motherboards from Asus have a problem with MSI 2708 * for the MCP55 NIC. It is not yet determined whether the MSI problem 2709 * also affects other devices. As for now, turn off MSI for this device. 2710 */ 2711 static void nvenet_msi_disable(struct pci_dev *dev) 2712 { 2713 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); 2714 2715 if (board_name && 2716 (strstr(board_name, "P5N32-SLI PREMIUM") || 2717 strstr(board_name, "P5N32-E SLI"))) { 2718 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n"); 2719 dev->no_msi = 1; 2720 } 2721 } 2722 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2723 PCI_DEVICE_ID_NVIDIA_NVENET_15, 2724 nvenet_msi_disable); 2725 2726 /* 2727 * PCIe spec r6.0 sec 6.1.4.3 says that if MSI/MSI-X is enabled, the device 2728 * can't use INTx interrupts. Tegra's PCIe Root Ports don't generate MSI 2729 * interrupts for PME and AER events; instead only INTx interrupts are 2730 * generated. Though Tegra's PCIe Root Ports can generate MSI interrupts 2731 * for other events, since PCIe specification doesn't support using a mix of 2732 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port 2733 * service drivers registering their respective ISRs for MSIs. 2734 */ 2735 static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev) 2736 { 2737 dev->no_msi = 1; 2738 } 2739 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0, 2740 PCI_CLASS_BRIDGE_PCI, 8, 2741 pci_quirk_nvidia_tegra_disable_rp_msi); 2742 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1, 2743 PCI_CLASS_BRIDGE_PCI, 8, 2744 pci_quirk_nvidia_tegra_disable_rp_msi); 2745 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2, 2746 PCI_CLASS_BRIDGE_PCI, 8, 2747 pci_quirk_nvidia_tegra_disable_rp_msi); 2748 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0, 2749 PCI_CLASS_BRIDGE_PCI, 8, 2750 pci_quirk_nvidia_tegra_disable_rp_msi); 2751 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, 2752 PCI_CLASS_BRIDGE_PCI, 8, 2753 pci_quirk_nvidia_tegra_disable_rp_msi); 2754 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c, 2755 PCI_CLASS_BRIDGE_PCI, 8, 2756 pci_quirk_nvidia_tegra_disable_rp_msi); 2757 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d, 2758 PCI_CLASS_BRIDGE_PCI, 8, 2759 pci_quirk_nvidia_tegra_disable_rp_msi); 2760 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12, 2761 PCI_CLASS_BRIDGE_PCI, 8, 2762 pci_quirk_nvidia_tegra_disable_rp_msi); 2763 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13, 2764 PCI_CLASS_BRIDGE_PCI, 8, 2765 pci_quirk_nvidia_tegra_disable_rp_msi); 2766 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae, 2767 PCI_CLASS_BRIDGE_PCI, 8, 2768 pci_quirk_nvidia_tegra_disable_rp_msi); 2769 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf, 2770 PCI_CLASS_BRIDGE_PCI, 8, 2771 pci_quirk_nvidia_tegra_disable_rp_msi); 2772 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5, 2773 PCI_CLASS_BRIDGE_PCI, 8, 2774 pci_quirk_nvidia_tegra_disable_rp_msi); 2775 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6, 2776 PCI_CLASS_BRIDGE_PCI, 8, 2777 pci_quirk_nvidia_tegra_disable_rp_msi); 2778 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229a, 2779 PCI_CLASS_BRIDGE_PCI, 8, 2780 pci_quirk_nvidia_tegra_disable_rp_msi); 2781 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229c, 2782 PCI_CLASS_BRIDGE_PCI, 8, 2783 pci_quirk_nvidia_tegra_disable_rp_msi); 2784 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229e, 2785 PCI_CLASS_BRIDGE_PCI, 8, 2786 pci_quirk_nvidia_tegra_disable_rp_msi); 2787 2788 /* 2789 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing 2790 * config register. This register controls the routing of legacy 2791 * interrupts from devices that route through the MCP55. If this register 2792 * is misprogrammed, interrupts are only sent to the BSP, unlike 2793 * conventional systems where the IRQ is broadcast to all online CPUs. Not 2794 * having this register set properly prevents kdump from booting up 2795 * properly, so let's make sure that we have it set correctly. 2796 * Note that this is an undocumented register. 2797 */ 2798 static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev) 2799 { 2800 u32 cfg; 2801 2802 if (!pci_find_capability(dev, PCI_CAP_ID_HT)) 2803 return; 2804 2805 pci_read_config_dword(dev, 0x74, &cfg); 2806 2807 if (cfg & ((1 << 2) | (1 << 15))) { 2808 pr_info("Rewriting IRQ routing register on MCP55\n"); 2809 cfg &= ~((1 << 2) | (1 << 15)); 2810 pci_write_config_dword(dev, 0x74, cfg); 2811 } 2812 } 2813 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2814 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0, 2815 nvbridge_check_legacy_irq_routing); 2816 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 2817 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4, 2818 nvbridge_check_legacy_irq_routing); 2819 2820 static int ht_check_msi_mapping(struct pci_dev *dev) 2821 { 2822 int pos, ttl = PCI_FIND_CAP_TTL; 2823 int found = 0; 2824 2825 /* Check if there is HT MSI cap or enabled on this device */ 2826 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2827 while (pos && ttl--) { 2828 u8 flags; 2829 2830 if (found < 1) 2831 found = 1; 2832 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2833 &flags) == 0) { 2834 if (flags & HT_MSI_FLAGS_ENABLE) { 2835 if (found < 2) { 2836 found = 2; 2837 break; 2838 } 2839 } 2840 } 2841 pos = pci_find_next_ht_capability(dev, pos, 2842 HT_CAPTYPE_MSI_MAPPING); 2843 } 2844 2845 return found; 2846 } 2847 2848 static int host_bridge_with_leaf(struct pci_dev *host_bridge) 2849 { 2850 struct pci_dev *dev; 2851 int pos; 2852 int i, dev_no; 2853 int found = 0; 2854 2855 dev_no = host_bridge->devfn >> 3; 2856 for (i = dev_no + 1; i < 0x20; i++) { 2857 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); 2858 if (!dev) 2859 continue; 2860 2861 /* found next host bridge? */ 2862 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2863 if (pos != 0) { 2864 pci_dev_put(dev); 2865 break; 2866 } 2867 2868 if (ht_check_msi_mapping(dev)) { 2869 found = 1; 2870 pci_dev_put(dev); 2871 break; 2872 } 2873 pci_dev_put(dev); 2874 } 2875 2876 return found; 2877 } 2878 2879 #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ 2880 #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ 2881 2882 static int is_end_of_ht_chain(struct pci_dev *dev) 2883 { 2884 int pos, ctrl_off; 2885 int end = 0; 2886 u16 flags, ctrl; 2887 2888 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); 2889 2890 if (!pos) 2891 goto out; 2892 2893 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); 2894 2895 ctrl_off = ((flags >> 10) & 1) ? 2896 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; 2897 pci_read_config_word(dev, pos + ctrl_off, &ctrl); 2898 2899 if (ctrl & (1 << 6)) 2900 end = 1; 2901 2902 out: 2903 return end; 2904 } 2905 2906 static void nv_ht_enable_msi_mapping(struct pci_dev *dev) 2907 { 2908 struct pci_dev *host_bridge; 2909 int pos; 2910 int i, dev_no; 2911 int found = 0; 2912 2913 dev_no = dev->devfn >> 3; 2914 for (i = dev_no; i >= 0; i--) { 2915 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); 2916 if (!host_bridge) 2917 continue; 2918 2919 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2920 if (pos != 0) { 2921 found = 1; 2922 break; 2923 } 2924 pci_dev_put(host_bridge); 2925 } 2926 2927 if (!found) 2928 return; 2929 2930 /* don't enable end_device/host_bridge with leaf directly here */ 2931 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && 2932 host_bridge_with_leaf(host_bridge)) 2933 goto out; 2934 2935 /* root did that ! */ 2936 if (msi_ht_cap_enabled(host_bridge)) 2937 goto out; 2938 2939 ht_enable_msi_mapping(dev); 2940 2941 out: 2942 pci_dev_put(host_bridge); 2943 } 2944 2945 static void ht_disable_msi_mapping(struct pci_dev *dev) 2946 { 2947 int pos, ttl = PCI_FIND_CAP_TTL; 2948 2949 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); 2950 while (pos && ttl--) { 2951 u8 flags; 2952 2953 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, 2954 &flags) == 0) { 2955 pci_info(dev, "Disabling HT MSI Mapping\n"); 2956 2957 pci_write_config_byte(dev, pos + HT_MSI_FLAGS, 2958 flags & ~HT_MSI_FLAGS_ENABLE); 2959 } 2960 pos = pci_find_next_ht_capability(dev, pos, 2961 HT_CAPTYPE_MSI_MAPPING); 2962 } 2963 } 2964 2965 static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) 2966 { 2967 struct pci_dev *host_bridge; 2968 int pos; 2969 int found; 2970 2971 if (!pci_msi_enabled()) 2972 return; 2973 2974 /* check if there is HT MSI cap or enabled on this device */ 2975 found = ht_check_msi_mapping(dev); 2976 2977 /* no HT MSI CAP */ 2978 if (found == 0) 2979 return; 2980 2981 /* 2982 * HT MSI mapping should be disabled on devices that are below 2983 * a non-Hypertransport host bridge. Locate the host bridge... 2984 */ 2985 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0, 2986 PCI_DEVFN(0, 0)); 2987 if (host_bridge == NULL) { 2988 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n"); 2989 return; 2990 } 2991 2992 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); 2993 if (pos != 0) { 2994 /* Host bridge is to HT */ 2995 if (found == 1) { 2996 /* it is not enabled, try to enable it */ 2997 if (all) 2998 ht_enable_msi_mapping(dev); 2999 else 3000 nv_ht_enable_msi_mapping(dev); 3001 } 3002 goto out; 3003 } 3004 3005 /* HT MSI is not enabled */ 3006 if (found == 1) 3007 goto out; 3008 3009 /* Host bridge is not to HT, disable HT MSI mapping on this device */ 3010 ht_disable_msi_mapping(dev); 3011 3012 out: 3013 pci_dev_put(host_bridge); 3014 } 3015 3016 static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev) 3017 { 3018 return __nv_msi_ht_cap_quirk(dev, 1); 3019 } 3020 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 3021 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); 3022 3023 static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) 3024 { 3025 return __nv_msi_ht_cap_quirk(dev, 0); 3026 } 3027 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 3028 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); 3029 3030 static void quirk_msi_intx_disable_bug(struct pci_dev *dev) 3031 { 3032 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 3033 } 3034 3035 static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) 3036 { 3037 struct pci_dev *p; 3038 3039 /* 3040 * SB700 MSI issue will be fixed at HW level from revision A21; 3041 * we need check PCI REVISION ID of SMBus controller to get SB700 3042 * revision. 3043 */ 3044 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, 3045 NULL); 3046 if (!p) 3047 return; 3048 3049 if ((p->revision < 0x3B) && (p->revision >= 0x30)) 3050 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 3051 pci_dev_put(p); 3052 } 3053 3054 static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev) 3055 { 3056 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */ 3057 if (dev->revision < 0x18) { 3058 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n"); 3059 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; 3060 } 3061 } 3062 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3063 PCI_DEVICE_ID_TIGON3_5780, 3064 quirk_msi_intx_disable_bug); 3065 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3066 PCI_DEVICE_ID_TIGON3_5780S, 3067 quirk_msi_intx_disable_bug); 3068 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3069 PCI_DEVICE_ID_TIGON3_5714, 3070 quirk_msi_intx_disable_bug); 3071 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3072 PCI_DEVICE_ID_TIGON3_5714S, 3073 quirk_msi_intx_disable_bug); 3074 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3075 PCI_DEVICE_ID_TIGON3_5715, 3076 quirk_msi_intx_disable_bug); 3077 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, 3078 PCI_DEVICE_ID_TIGON3_5715S, 3079 quirk_msi_intx_disable_bug); 3080 3081 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, 3082 quirk_msi_intx_disable_ati_bug); 3083 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, 3084 quirk_msi_intx_disable_ati_bug); 3085 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, 3086 quirk_msi_intx_disable_ati_bug); 3087 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, 3088 quirk_msi_intx_disable_ati_bug); 3089 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, 3090 quirk_msi_intx_disable_ati_bug); 3091 3092 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, 3093 quirk_msi_intx_disable_bug); 3094 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, 3095 quirk_msi_intx_disable_bug); 3096 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, 3097 quirk_msi_intx_disable_bug); 3098 3099 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062, 3100 quirk_msi_intx_disable_bug); 3101 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063, 3102 quirk_msi_intx_disable_bug); 3103 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060, 3104 quirk_msi_intx_disable_bug); 3105 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062, 3106 quirk_msi_intx_disable_bug); 3107 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073, 3108 quirk_msi_intx_disable_bug); 3109 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083, 3110 quirk_msi_intx_disable_bug); 3111 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090, 3112 quirk_msi_intx_disable_qca_bug); 3113 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091, 3114 quirk_msi_intx_disable_qca_bug); 3115 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0, 3116 quirk_msi_intx_disable_qca_bug); 3117 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1, 3118 quirk_msi_intx_disable_qca_bug); 3119 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091, 3120 quirk_msi_intx_disable_qca_bug); 3121 3122 /* 3123 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it 3124 * should be disabled on platforms where the device (mistakenly) advertises it. 3125 * 3126 * Notice that this quirk also disables MSI (which may work, but hasn't been 3127 * tested), since currently there is no standard way to disable only MSI-X. 3128 * 3129 * The 0031 device id is reused for other non Root Port device types, 3130 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class. 3131 */ 3132 static void quirk_al_msi_disable(struct pci_dev *dev) 3133 { 3134 dev->no_msi = 1; 3135 pci_warn(dev, "Disabling MSI/MSI-X\n"); 3136 } 3137 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, 3138 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable); 3139 #endif /* CONFIG_PCI_MSI */ 3140 3141 /* 3142 * Allow manual resource allocation for PCI hotplug bridges via 3143 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI 3144 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to 3145 * allocate resources when hotplug device is inserted and PCI bus is 3146 * rescanned. 3147 */ 3148 static void quirk_hotplug_bridge(struct pci_dev *dev) 3149 { 3150 dev->is_hotplug_bridge = 1; 3151 } 3152 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge); 3153 3154 /* 3155 * This is a quirk for the Ricoh MMC controller found as a part of some 3156 * multifunction chips. 3157 * 3158 * This is very similar and based on the ricoh_mmc driver written by 3159 * Philip Langdale. Thank you for these magic sequences. 3160 * 3161 * These chips implement the four main memory card controllers (SD, MMC, 3162 * MS, xD) and one or both of CardBus or FireWire. 3163 * 3164 * It happens that they implement SD and MMC support as separate 3165 * controllers (and PCI functions). The Linux SDHCI driver supports MMC 3166 * cards but the chip detects MMC cards in hardware and directs them to the 3167 * MMC controller - so the SDHCI driver never sees them. 3168 * 3169 * To get around this, we must disable the useless MMC controller. At that 3170 * point, the SDHCI controller will start seeing them. It seems to be the 3171 * case that the relevant PCI registers to deactivate the MMC controller 3172 * live on PCI function 0, which might be the CardBus controller or the 3173 * FireWire controller, depending on the particular chip in question 3174 * 3175 * This has to be done early, because as soon as we disable the MMC controller 3176 * other PCI functions shift up one level, e.g. function #2 becomes function 3177 * #1, and this will confuse the PCI core. 3178 */ 3179 #ifdef CONFIG_MMC_RICOH_MMC 3180 static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev) 3181 { 3182 u8 write_enable; 3183 u8 write_target; 3184 u8 disable; 3185 3186 /* 3187 * Disable via CardBus interface 3188 * 3189 * This must be done via function #0 3190 */ 3191 if (PCI_FUNC(dev->devfn)) 3192 return; 3193 3194 pci_read_config_byte(dev, 0xB7, &disable); 3195 if (disable & 0x02) 3196 return; 3197 3198 pci_read_config_byte(dev, 0x8E, &write_enable); 3199 pci_write_config_byte(dev, 0x8E, 0xAA); 3200 pci_read_config_byte(dev, 0x8D, &write_target); 3201 pci_write_config_byte(dev, 0x8D, 0xB7); 3202 pci_write_config_byte(dev, 0xB7, disable | 0x02); 3203 pci_write_config_byte(dev, 0x8E, write_enable); 3204 pci_write_config_byte(dev, 0x8D, write_target); 3205 3206 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n"); 3207 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); 3208 } 3209 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 3210 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); 3211 3212 static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) 3213 { 3214 u8 write_enable; 3215 u8 disable; 3216 3217 /* 3218 * Disable via FireWire interface 3219 * 3220 * This must be done via function #0 3221 */ 3222 if (PCI_FUNC(dev->devfn)) 3223 return; 3224 /* 3225 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize 3226 * certain types of SD/MMC cards. Lowering the SD base clock 3227 * frequency from 200Mhz to 50Mhz fixes this issue. 3228 * 3229 * 0x150 - SD2.0 mode enable for changing base clock 3230 * frequency to 50Mhz 3231 * 0xe1 - Base clock frequency 3232 * 0x32 - 50Mhz new clock frequency 3233 * 0xf9 - Key register for 0x150 3234 * 0xfc - key register for 0xe1 3235 */ 3236 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 || 3237 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) { 3238 pci_write_config_byte(dev, 0xf9, 0xfc); 3239 pci_write_config_byte(dev, 0x150, 0x10); 3240 pci_write_config_byte(dev, 0xf9, 0x00); 3241 pci_write_config_byte(dev, 0xfc, 0x01); 3242 pci_write_config_byte(dev, 0xe1, 0x32); 3243 pci_write_config_byte(dev, 0xfc, 0x00); 3244 3245 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n"); 3246 } 3247 3248 pci_read_config_byte(dev, 0xCB, &disable); 3249 3250 if (disable & 0x02) 3251 return; 3252 3253 pci_read_config_byte(dev, 0xCA, &write_enable); 3254 pci_write_config_byte(dev, 0xCA, 0x57); 3255 pci_write_config_byte(dev, 0xCB, disable | 0x02); 3256 pci_write_config_byte(dev, 0xCA, write_enable); 3257 3258 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n"); 3259 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); 3260 3261 } 3262 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 3263 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); 3264 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); 3265 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); 3266 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); 3267 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); 3268 #endif /*CONFIG_MMC_RICOH_MMC*/ 3269 3270 #ifdef CONFIG_DMAR_TABLE 3271 #define VTUNCERRMSK_REG 0x1ac 3272 #define VTD_MSK_SPEC_ERRORS (1 << 31) 3273 /* 3274 * This is a quirk for masking VT-d spec-defined errors to platform error 3275 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets 3276 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based 3277 * on the RAS config settings of the platform) when a VT-d fault happens. 3278 * The resulting SMI caused the system to hang. 3279 * 3280 * VT-d spec-related errors are already handled by the VT-d OS code, so no 3281 * need to report the same error through other channels. 3282 */ 3283 static void vtd_mask_spec_errors(struct pci_dev *dev) 3284 { 3285 u32 word; 3286 3287 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word); 3288 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS); 3289 } 3290 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); 3291 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); 3292 #endif 3293 3294 static void fixup_ti816x_class(struct pci_dev *dev) 3295 { 3296 u32 class = dev->class; 3297 3298 /* TI 816x devices do not have class code set when in PCIe boot mode */ 3299 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8; 3300 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n", 3301 class, dev->class); 3302 } 3303 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800, 3304 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class); 3305 3306 /* 3307 * Some PCIe devices do not work reliably with the claimed maximum 3308 * payload size supported. 3309 */ 3310 static void fixup_mpss_256(struct pci_dev *dev) 3311 { 3312 dev->pcie_mpss = 1; /* 256 bytes */ 3313 } 3314 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, 3315 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256); 3316 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, 3317 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256); 3318 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, 3319 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256); 3320 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256); 3321 3322 /* 3323 * Intel 5000 and 5100 Memory controllers have an erratum with read completion 3324 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B. 3325 * Since there is no way of knowing what the PCIe MPS on each fabric will be 3326 * until all of the devices are discovered and buses walked, read completion 3327 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because 3328 * it is possible to hotplug a device with MPS of 256B. 3329 */ 3330 static void quirk_intel_mc_errata(struct pci_dev *dev) 3331 { 3332 int err; 3333 u16 rcc; 3334 3335 if (pcie_bus_config == PCIE_BUS_TUNE_OFF || 3336 pcie_bus_config == PCIE_BUS_DEFAULT) 3337 return; 3338 3339 /* 3340 * Intel erratum specifies bits to change but does not say what 3341 * they are. Keeping them magical until such time as the registers 3342 * and values can be explained. 3343 */ 3344 err = pci_read_config_word(dev, 0x48, &rcc); 3345 if (err) { 3346 pci_err(dev, "Error attempting to read the read completion coalescing register\n"); 3347 return; 3348 } 3349 3350 if (!(rcc & (1 << 10))) 3351 return; 3352 3353 rcc &= ~(1 << 10); 3354 3355 err = pci_write_config_word(dev, 0x48, rcc); 3356 if (err) { 3357 pci_err(dev, "Error attempting to write the read completion coalescing register\n"); 3358 return; 3359 } 3360 3361 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n"); 3362 } 3363 /* Intel 5000 series memory controllers and ports 2-7 */ 3364 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata); 3365 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata); 3366 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata); 3367 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata); 3368 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata); 3369 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata); 3370 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata); 3371 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata); 3372 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata); 3373 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata); 3374 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata); 3375 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata); 3376 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata); 3377 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata); 3378 /* Intel 5100 series memory controllers and ports 2-7 */ 3379 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata); 3380 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata); 3381 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata); 3382 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata); 3383 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata); 3384 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata); 3385 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata); 3386 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata); 3387 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata); 3388 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata); 3389 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata); 3390 3391 /* 3392 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. 3393 * To work around this, query the size it should be configured to by the 3394 * device and modify the resource end to correspond to this new size. 3395 */ 3396 static void quirk_intel_ntb(struct pci_dev *dev) 3397 { 3398 int rc; 3399 u8 val; 3400 3401 rc = pci_read_config_byte(dev, 0x00D0, &val); 3402 if (rc) 3403 return; 3404 3405 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1; 3406 3407 rc = pci_read_config_byte(dev, 0x00D1, &val); 3408 if (rc) 3409 return; 3410 3411 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1; 3412 } 3413 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb); 3414 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb); 3415 3416 /* 3417 * Some BIOS implementations leave the Intel GPU interrupts enabled, even 3418 * though no one is handling them (e.g., if the i915 driver is never 3419 * loaded). Additionally the interrupt destination is not set up properly 3420 * and the interrupt ends up -somewhere-. 3421 * 3422 * These spurious interrupts are "sticky" and the kernel disables the 3423 * (shared) interrupt line after 100,000+ generated interrupts. 3424 * 3425 * Fix it by disabling the still enabled interrupts. This resolves crashes 3426 * often seen on monitor unplug. 3427 */ 3428 #define I915_DEIER_REG 0x4400c 3429 static void disable_igfx_irq(struct pci_dev *dev) 3430 { 3431 void __iomem *regs = pci_iomap(dev, 0, 0); 3432 if (regs == NULL) { 3433 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n"); 3434 return; 3435 } 3436 3437 /* Check if any interrupt line is still enabled */ 3438 if (readl(regs + I915_DEIER_REG) != 0) { 3439 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n"); 3440 3441 writel(0, regs + I915_DEIER_REG); 3442 } 3443 3444 pci_iounmap(dev, regs); 3445 } 3446 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq); 3447 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq); 3448 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq); 3449 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq); 3450 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq); 3451 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq); 3452 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq); 3453 3454 /* 3455 * PCI devices which are on Intel chips can skip the 10ms delay 3456 * before entering D3 mode. 3457 */ 3458 static void quirk_remove_d3hot_delay(struct pci_dev *dev) 3459 { 3460 dev->d3hot_delay = 0; 3461 } 3462 /* C600 Series devices do not need 10ms d3hot_delay */ 3463 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay); 3464 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay); 3465 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay); 3466 /* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */ 3467 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay); 3468 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay); 3469 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay); 3470 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay); 3471 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay); 3472 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay); 3473 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay); 3474 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay); 3475 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay); 3476 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay); 3477 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay); 3478 /* Intel Cherrytrail devices do not need 10ms d3hot_delay */ 3479 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay); 3480 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay); 3481 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay); 3482 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay); 3483 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay); 3484 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay); 3485 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay); 3486 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay); 3487 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay); 3488 3489 /* 3490 * Some devices may pass our check in pci_intx_mask_supported() if 3491 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly 3492 * support this feature. 3493 */ 3494 static void quirk_broken_intx_masking(struct pci_dev *dev) 3495 { 3496 dev->broken_intx_masking = 1; 3497 } 3498 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030, 3499 quirk_broken_intx_masking); 3500 DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */ 3501 quirk_broken_intx_masking); 3502 DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */ 3503 quirk_broken_intx_masking); 3504 3505 /* 3506 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10) 3507 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC 3508 * 3509 * RTL8110SC - Fails under PCI device assignment using DisINTx masking. 3510 */ 3511 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169, 3512 quirk_broken_intx_masking); 3513 3514 /* 3515 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking, 3516 * DisINTx can be set but the interrupt status bit is non-functional. 3517 */ 3518 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking); 3519 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking); 3520 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking); 3521 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking); 3522 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking); 3523 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking); 3524 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking); 3525 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking); 3526 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking); 3527 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking); 3528 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking); 3529 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking); 3530 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking); 3531 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking); 3532 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking); 3533 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking); 3534 3535 static u16 mellanox_broken_intx_devs[] = { 3536 PCI_DEVICE_ID_MELLANOX_HERMON_SDR, 3537 PCI_DEVICE_ID_MELLANOX_HERMON_DDR, 3538 PCI_DEVICE_ID_MELLANOX_HERMON_QDR, 3539 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2, 3540 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2, 3541 PCI_DEVICE_ID_MELLANOX_HERMON_EN, 3542 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2, 3543 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN, 3544 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2, 3545 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2, 3546 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2, 3547 PCI_DEVICE_ID_MELLANOX_CONNECTX2, 3548 PCI_DEVICE_ID_MELLANOX_CONNECTX3, 3549 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO, 3550 }; 3551 3552 #define CONNECTX_4_CURR_MAX_MINOR 99 3553 #define CONNECTX_4_INTX_SUPPORT_MINOR 14 3554 3555 /* 3556 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts. 3557 * If so, don't mark it as broken. 3558 * FW minor > 99 means older FW version format and no INTx masking support. 3559 * FW minor < 14 means new FW version format and no INTx masking support. 3560 */ 3561 static void mellanox_check_broken_intx_masking(struct pci_dev *pdev) 3562 { 3563 __be32 __iomem *fw_ver; 3564 u16 fw_major; 3565 u16 fw_minor; 3566 u16 fw_subminor; 3567 u32 fw_maj_min; 3568 u32 fw_sub_min; 3569 int i; 3570 3571 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) { 3572 if (pdev->device == mellanox_broken_intx_devs[i]) { 3573 pdev->broken_intx_masking = 1; 3574 return; 3575 } 3576 } 3577 3578 /* 3579 * Getting here means Connect-IB cards and up. Connect-IB has no INTx 3580 * support so shouldn't be checked further 3581 */ 3582 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB) 3583 return; 3584 3585 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 && 3586 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX) 3587 return; 3588 3589 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */ 3590 if (pci_enable_device_mem(pdev)) { 3591 pci_warn(pdev, "Can't enable device memory\n"); 3592 return; 3593 } 3594 3595 fw_ver = ioremap(pci_resource_start(pdev, 0), 4); 3596 if (!fw_ver) { 3597 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n"); 3598 goto out; 3599 } 3600 3601 /* Reading from resource space should be 32b aligned */ 3602 fw_maj_min = ioread32be(fw_ver); 3603 fw_sub_min = ioread32be(fw_ver + 1); 3604 fw_major = fw_maj_min & 0xffff; 3605 fw_minor = fw_maj_min >> 16; 3606 fw_subminor = fw_sub_min & 0xffff; 3607 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR || 3608 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) { 3609 pci_warn(pdev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n", 3610 fw_major, fw_minor, fw_subminor, pdev->device == 3611 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14); 3612 pdev->broken_intx_masking = 1; 3613 } 3614 3615 iounmap(fw_ver); 3616 3617 out: 3618 pci_disable_device(pdev); 3619 } 3620 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID, 3621 mellanox_check_broken_intx_masking); 3622 3623 static void quirk_no_bus_reset(struct pci_dev *dev) 3624 { 3625 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET; 3626 } 3627 3628 /* 3629 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be 3630 * prevented for those affected devices. 3631 */ 3632 static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) 3633 { 3634 if ((dev->device & 0xffc0) == 0x2340) 3635 quirk_no_bus_reset(dev); 3636 } 3637 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 3638 quirk_nvidia_no_bus_reset); 3639 3640 /* 3641 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset. 3642 * The device will throw a Link Down error on AER-capable systems and 3643 * regardless of AER, config space of the device is never accessible again 3644 * and typically causes the system to hang or reset when access is attempted. 3645 * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/ 3646 */ 3647 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset); 3648 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset); 3649 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset); 3650 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset); 3651 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset); 3652 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset); 3653 3654 /* 3655 * Root port on some Cavium CN8xxx chips do not successfully complete a bus 3656 * reset when used with certain child devices. After the reset, config 3657 * accesses to the child may fail. 3658 */ 3659 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset); 3660 3661 /* 3662 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS 3663 * automatically disables LTSSM when Secondary Bus Reset is received and 3664 * the device stops working. Prevent bus reset for these devices. With 3665 * this change, the device can be assigned to VMs with VFIO, but it will 3666 * leak state between VMs. Reference 3667 * https://e2e.ti.com/support/processors/f/791/t/954382 3668 */ 3669 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset); 3670 3671 static void quirk_no_pm_reset(struct pci_dev *dev) 3672 { 3673 /* 3674 * We can't do a bus reset on root bus devices, but an ineffective 3675 * PM reset may be better than nothing. 3676 */ 3677 if (!pci_is_root_bus(dev->bus)) 3678 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET; 3679 } 3680 3681 /* 3682 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition 3683 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems 3684 * to have no effect on the device: it retains the framebuffer contents and 3685 * monitor sync. Advertising this support makes other layers, like VFIO, 3686 * assume pci_reset_function() is viable for this device. Mark it as 3687 * unavailable to skip it when testing reset methods. 3688 */ 3689 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 3690 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset); 3691 3692 /* 3693 * Thunderbolt controllers with broken MSI hotplug signaling: 3694 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part 3695 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge). 3696 */ 3697 static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev) 3698 { 3699 if (pdev->is_hotplug_bridge && 3700 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C || 3701 pdev->revision <= 1)) 3702 pdev->no_msi = 1; 3703 } 3704 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE, 3705 quirk_thunderbolt_hotplug_msi); 3706 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE, 3707 quirk_thunderbolt_hotplug_msi); 3708 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK, 3709 quirk_thunderbolt_hotplug_msi); 3710 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, 3711 quirk_thunderbolt_hotplug_msi); 3712 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE, 3713 quirk_thunderbolt_hotplug_msi); 3714 3715 #ifdef CONFIG_ACPI 3716 /* 3717 * Apple: Shutdown Cactus Ridge Thunderbolt controller. 3718 * 3719 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be 3720 * shutdown before suspend. Otherwise the native host interface (NHI) will not 3721 * be present after resume if a device was plugged in before suspend. 3722 * 3723 * The Thunderbolt controller consists of a PCIe switch with downstream 3724 * bridges leading to the NHI and to the tunnel PCI bridges. 3725 * 3726 * This quirk cuts power to the whole chip. Therefore we have to apply it 3727 * during suspend_noirq of the upstream bridge. 3728 * 3729 * Power is automagically restored before resume. No action is needed. 3730 */ 3731 static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev) 3732 { 3733 acpi_handle bridge, SXIO, SXFP, SXLV; 3734 3735 if (!x86_apple_machine) 3736 return; 3737 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM) 3738 return; 3739 3740 /* 3741 * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller. 3742 * We don't know how to turn it back on again, but firmware does, 3743 * so we can only use SXIO/SXFP/SXLF if we're suspending via 3744 * firmware. 3745 */ 3746 if (!pm_suspend_via_firmware()) 3747 return; 3748 3749 bridge = ACPI_HANDLE(&dev->dev); 3750 if (!bridge) 3751 return; 3752 3753 /* 3754 * SXIO and SXLV are present only on machines requiring this quirk. 3755 * Thunderbolt bridges in external devices might have the same 3756 * device ID as those on the host, but they will not have the 3757 * associated ACPI methods. This implicitly checks that we are at 3758 * the right bridge. 3759 */ 3760 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO)) 3761 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP)) 3762 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV))) 3763 return; 3764 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n"); 3765 3766 /* magic sequence */ 3767 acpi_execute_simple_method(SXIO, NULL, 1); 3768 acpi_execute_simple_method(SXFP, NULL, 0); 3769 msleep(300); 3770 acpi_execute_simple_method(SXLV, NULL, 0); 3771 acpi_execute_simple_method(SXIO, NULL, 0); 3772 acpi_execute_simple_method(SXLV, NULL, 0); 3773 } 3774 DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL, 3775 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, 3776 quirk_apple_poweroff_thunderbolt); 3777 #endif 3778 3779 /* 3780 * Following are device-specific reset methods which can be used to 3781 * reset a single function if other methods (e.g. FLR, PM D0->D3) are 3782 * not available. 3783 */ 3784 static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, bool probe) 3785 { 3786 /* 3787 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf 3788 * 3789 * The 82599 supports FLR on VFs, but FLR support is reported only 3790 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5). 3791 * Thus we must call pcie_flr() directly without first checking if it is 3792 * supported. 3793 */ 3794 if (!probe) 3795 pcie_flr(dev); 3796 return 0; 3797 } 3798 3799 #define SOUTH_CHICKEN2 0xc2004 3800 #define PCH_PP_STATUS 0xc7200 3801 #define PCH_PP_CONTROL 0xc7204 3802 #define MSG_CTL 0x45010 3803 #define NSDE_PWR_STATE 0xd0100 3804 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */ 3805 3806 static int reset_ivb_igd(struct pci_dev *dev, bool probe) 3807 { 3808 void __iomem *mmio_base; 3809 unsigned long timeout; 3810 u32 val; 3811 3812 if (probe) 3813 return 0; 3814 3815 mmio_base = pci_iomap(dev, 0, 0); 3816 if (!mmio_base) 3817 return -ENOMEM; 3818 3819 iowrite32(0x00000002, mmio_base + MSG_CTL); 3820 3821 /* 3822 * Clobbering SOUTH_CHICKEN2 register is fine only if the next 3823 * driver loaded sets the right bits. However, this's a reset and 3824 * the bits have been set by i915 previously, so we clobber 3825 * SOUTH_CHICKEN2 register directly here. 3826 */ 3827 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2); 3828 3829 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe; 3830 iowrite32(val, mmio_base + PCH_PP_CONTROL); 3831 3832 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT); 3833 do { 3834 val = ioread32(mmio_base + PCH_PP_STATUS); 3835 if ((val & 0xb0000000) == 0) 3836 goto reset_complete; 3837 msleep(10); 3838 } while (time_before(jiffies, timeout)); 3839 pci_warn(dev, "timeout during reset\n"); 3840 3841 reset_complete: 3842 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE); 3843 3844 pci_iounmap(dev, mmio_base); 3845 return 0; 3846 } 3847 3848 /* Device-specific reset method for Chelsio T4-based adapters */ 3849 static int reset_chelsio_generic_dev(struct pci_dev *dev, bool probe) 3850 { 3851 u16 old_command; 3852 u16 msix_flags; 3853 3854 /* 3855 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating 3856 * that we have no device-specific reset method. 3857 */ 3858 if ((dev->device & 0xf000) != 0x4000) 3859 return -ENOTTY; 3860 3861 /* 3862 * If this is the "probe" phase, return 0 indicating that we can 3863 * reset this device. 3864 */ 3865 if (probe) 3866 return 0; 3867 3868 /* 3869 * T4 can wedge if there are DMAs in flight within the chip and Bus 3870 * Master has been disabled. We need to have it on till the Function 3871 * Level Reset completes. (BUS_MASTER is disabled in 3872 * pci_reset_function()). 3873 */ 3874 pci_read_config_word(dev, PCI_COMMAND, &old_command); 3875 pci_write_config_word(dev, PCI_COMMAND, 3876 old_command | PCI_COMMAND_MASTER); 3877 3878 /* 3879 * Perform the actual device function reset, saving and restoring 3880 * configuration information around the reset. 3881 */ 3882 pci_save_state(dev); 3883 3884 /* 3885 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts 3886 * are disabled when an MSI-X interrupt message needs to be delivered. 3887 * So we briefly re-enable MSI-X interrupts for the duration of the 3888 * FLR. The pci_restore_state() below will restore the original 3889 * MSI-X state. 3890 */ 3891 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags); 3892 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0) 3893 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, 3894 msix_flags | 3895 PCI_MSIX_FLAGS_ENABLE | 3896 PCI_MSIX_FLAGS_MASKALL); 3897 3898 pcie_flr(dev); 3899 3900 /* 3901 * Restore the configuration information (BAR values, etc.) including 3902 * the original PCI Configuration Space Command word, and return 3903 * success. 3904 */ 3905 pci_restore_state(dev); 3906 pci_write_config_word(dev, PCI_COMMAND, old_command); 3907 return 0; 3908 } 3909 3910 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed 3911 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156 3912 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166 3913 3914 /* 3915 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after 3916 * FLR where config space reads from the device return -1. We seem to be 3917 * able to avoid this condition if we disable the NVMe controller prior to 3918 * FLR. This quirk is generic for any NVMe class device requiring similar 3919 * assistance to quiesce the device prior to FLR. 3920 * 3921 * NVMe specification: https://nvmexpress.org/resources/specifications/ 3922 * Revision 1.0e: 3923 * Chapter 2: Required and optional PCI config registers 3924 * Chapter 3: NVMe control registers 3925 * Chapter 7.3: Reset behavior 3926 */ 3927 static int nvme_disable_and_flr(struct pci_dev *dev, bool probe) 3928 { 3929 void __iomem *bar; 3930 u16 cmd; 3931 u32 cfg; 3932 3933 if (dev->class != PCI_CLASS_STORAGE_EXPRESS || 3934 pcie_reset_flr(dev, PCI_RESET_PROBE) || !pci_resource_start(dev, 0)) 3935 return -ENOTTY; 3936 3937 if (probe) 3938 return 0; 3939 3940 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg)); 3941 if (!bar) 3942 return -ENOTTY; 3943 3944 pci_read_config_word(dev, PCI_COMMAND, &cmd); 3945 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY); 3946 3947 cfg = readl(bar + NVME_REG_CC); 3948 3949 /* Disable controller if enabled */ 3950 if (cfg & NVME_CC_ENABLE) { 3951 u32 cap = readl(bar + NVME_REG_CAP); 3952 unsigned long timeout; 3953 3954 /* 3955 * Per nvme_disable_ctrl() skip shutdown notification as it 3956 * could complete commands to the admin queue. We only intend 3957 * to quiesce the device before reset. 3958 */ 3959 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE); 3960 3961 writel(cfg, bar + NVME_REG_CC); 3962 3963 /* 3964 * Some controllers require an additional delay here, see 3965 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet 3966 * supported by this quirk. 3967 */ 3968 3969 /* Cap register provides max timeout in 500ms increments */ 3970 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies; 3971 3972 for (;;) { 3973 u32 status = readl(bar + NVME_REG_CSTS); 3974 3975 /* Ready status becomes zero on disable complete */ 3976 if (!(status & NVME_CSTS_RDY)) 3977 break; 3978 3979 msleep(100); 3980 3981 if (time_after(jiffies, timeout)) { 3982 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n"); 3983 break; 3984 } 3985 } 3986 } 3987 3988 pci_iounmap(dev, bar); 3989 3990 pcie_flr(dev); 3991 3992 return 0; 3993 } 3994 3995 /* 3996 * Intel DC P3700 NVMe controller will timeout waiting for ready status 3997 * to change after NVMe enable if the driver starts interacting with the 3998 * device too soon after FLR. A 250ms delay after FLR has heuristically 3999 * proven to produce reliably working results for device assignment cases. 4000 */ 4001 static int delay_250ms_after_flr(struct pci_dev *dev, bool probe) 4002 { 4003 if (probe) 4004 return pcie_reset_flr(dev, PCI_RESET_PROBE); 4005 4006 pcie_reset_flr(dev, PCI_RESET_DO_RESET); 4007 4008 msleep(250); 4009 4010 return 0; 4011 } 4012 4013 #define PCI_DEVICE_ID_HINIC_VF 0x375E 4014 #define HINIC_VF_FLR_TYPE 0x1000 4015 #define HINIC_VF_FLR_CAP_BIT (1UL << 30) 4016 #define HINIC_VF_OP 0xE80 4017 #define HINIC_VF_FLR_PROC_BIT (1UL << 18) 4018 #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */ 4019 4020 /* Device-specific reset method for Huawei Intelligent NIC virtual functions */ 4021 static int reset_hinic_vf_dev(struct pci_dev *pdev, bool probe) 4022 { 4023 unsigned long timeout; 4024 void __iomem *bar; 4025 u32 val; 4026 4027 if (probe) 4028 return 0; 4029 4030 bar = pci_iomap(pdev, 0, 0); 4031 if (!bar) 4032 return -ENOTTY; 4033 4034 /* Get and check firmware capabilities */ 4035 val = ioread32be(bar + HINIC_VF_FLR_TYPE); 4036 if (!(val & HINIC_VF_FLR_CAP_BIT)) { 4037 pci_iounmap(pdev, bar); 4038 return -ENOTTY; 4039 } 4040 4041 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */ 4042 val = ioread32be(bar + HINIC_VF_OP); 4043 val = val | HINIC_VF_FLR_PROC_BIT; 4044 iowrite32be(val, bar + HINIC_VF_OP); 4045 4046 pcie_flr(pdev); 4047 4048 /* 4049 * The device must recapture its Bus and Device Numbers after FLR 4050 * in order generate Completions. Issue a config write to let the 4051 * device capture this information. 4052 */ 4053 pci_write_config_word(pdev, PCI_VENDOR_ID, 0); 4054 4055 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */ 4056 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT); 4057 do { 4058 val = ioread32be(bar + HINIC_VF_OP); 4059 if (!(val & HINIC_VF_FLR_PROC_BIT)) 4060 goto reset_complete; 4061 msleep(20); 4062 } while (time_before(jiffies, timeout)); 4063 4064 val = ioread32be(bar + HINIC_VF_OP); 4065 if (!(val & HINIC_VF_FLR_PROC_BIT)) 4066 goto reset_complete; 4067 4068 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val); 4069 4070 reset_complete: 4071 pci_iounmap(pdev, bar); 4072 4073 return 0; 4074 } 4075 4076 static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { 4077 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF, 4078 reset_intel_82599_sfp_virtfn }, 4079 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA, 4080 reset_ivb_igd }, 4081 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA, 4082 reset_ivb_igd }, 4083 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr }, 4084 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr }, 4085 { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr }, 4086 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, 4087 reset_chelsio_generic_dev }, 4088 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF, 4089 reset_hinic_vf_dev }, 4090 { 0 } 4091 }; 4092 4093 /* 4094 * These device-specific reset methods are here rather than in a driver 4095 * because when a host assigns a device to a guest VM, the host may need 4096 * to reset the device but probably doesn't have a driver for it. 4097 */ 4098 int pci_dev_specific_reset(struct pci_dev *dev, bool probe) 4099 { 4100 const struct pci_dev_reset_methods *i; 4101 4102 for (i = pci_dev_reset_methods; i->reset; i++) { 4103 if ((i->vendor == dev->vendor || 4104 i->vendor == (u16)PCI_ANY_ID) && 4105 (i->device == dev->device || 4106 i->device == (u16)PCI_ANY_ID)) 4107 return i->reset(dev, probe); 4108 } 4109 4110 return -ENOTTY; 4111 } 4112 4113 static void quirk_dma_func0_alias(struct pci_dev *dev) 4114 { 4115 if (PCI_FUNC(dev->devfn) != 0) 4116 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1); 4117 } 4118 4119 /* 4120 * https://bugzilla.redhat.com/show_bug.cgi?id=605888 4121 * 4122 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA. 4123 */ 4124 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias); 4125 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias); 4126 4127 static void quirk_dma_func1_alias(struct pci_dev *dev) 4128 { 4129 if (PCI_FUNC(dev->devfn) != 1) 4130 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1); 4131 } 4132 4133 /* 4134 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some 4135 * SKUs function 1 is present and is a legacy IDE controller, in other 4136 * SKUs this function is not present, making this a ghost requester. 4137 * https://bugzilla.kernel.org/show_bug.cgi?id=42679 4138 */ 4139 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120, 4140 quirk_dma_func1_alias); 4141 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123, 4142 quirk_dma_func1_alias); 4143 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */ 4144 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125, 4145 quirk_dma_func1_alias); 4146 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128, 4147 quirk_dma_func1_alias); 4148 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */ 4149 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130, 4150 quirk_dma_func1_alias); 4151 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170, 4152 quirk_dma_func1_alias); 4153 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */ 4154 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172, 4155 quirk_dma_func1_alias); 4156 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */ 4157 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a, 4158 quirk_dma_func1_alias); 4159 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */ 4160 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182, 4161 quirk_dma_func1_alias); 4162 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */ 4163 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183, 4164 quirk_dma_func1_alias); 4165 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */ 4166 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0, 4167 quirk_dma_func1_alias); 4168 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */ 4169 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215, 4170 quirk_dma_func1_alias); 4171 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */ 4172 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220, 4173 quirk_dma_func1_alias); 4174 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */ 4175 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230, 4176 quirk_dma_func1_alias); 4177 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642, 4178 quirk_dma_func1_alias); 4179 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645, 4180 quirk_dma_func1_alias); 4181 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */ 4182 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON, 4183 PCI_DEVICE_ID_JMICRON_JMB388_ESD, 4184 quirk_dma_func1_alias); 4185 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */ 4186 DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */ 4187 0x0122, /* Plextor M6E (Marvell 88SS9183)*/ 4188 quirk_dma_func1_alias); 4189 4190 /* 4191 * Some devices DMA with the wrong devfn, not just the wrong function. 4192 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where 4193 * the alias is "fixed" and independent of the device devfn. 4194 * 4195 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O 4196 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a 4197 * single device on the secondary bus. In reality, the single exposed 4198 * device at 0e.0 is the Address Translation Unit (ATU) of the controller 4199 * that provides a bridge to the internal bus of the I/O processor. The 4200 * controller supports private devices, which can be hidden from PCI config 4201 * space. In the case of the Adaptec 3405, a private device at 01.0 4202 * appears to be the DMA engine, which therefore needs to become a DMA 4203 * alias for the device. 4204 */ 4205 static const struct pci_device_id fixed_dma_alias_tbl[] = { 4206 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285, 4207 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */ 4208 .driver_data = PCI_DEVFN(1, 0) }, 4209 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285, 4210 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */ 4211 .driver_data = PCI_DEVFN(1, 0) }, 4212 { 0 } 4213 }; 4214 4215 static void quirk_fixed_dma_alias(struct pci_dev *dev) 4216 { 4217 const struct pci_device_id *id; 4218 4219 id = pci_match_id(fixed_dma_alias_tbl, dev); 4220 if (id) 4221 pci_add_dma_alias(dev, id->driver_data, 1); 4222 } 4223 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias); 4224 4225 /* 4226 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in 4227 * using the wrong DMA alias for the device. Some of these devices can be 4228 * used as either forward or reverse bridges, so we need to test whether the 4229 * device is operating in the correct mode. We could probably apply this 4230 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test 4231 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and 4232 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge. 4233 */ 4234 static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev) 4235 { 4236 if (!pci_is_root_bus(pdev->bus) && 4237 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE && 4238 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) && 4239 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE) 4240 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS; 4241 } 4242 /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */ 4243 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080, 4244 quirk_use_pcie_bridge_dma_alias); 4245 /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */ 4246 DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias); 4247 /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */ 4248 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); 4249 /* ITE 8893 has the same problem as the 8892 */ 4250 DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias); 4251 /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */ 4252 DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias); 4253 4254 /* 4255 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to 4256 * be added as aliases to the DMA device in order to allow buffer access 4257 * when IOMMU is enabled. Following devfns have to match RIT-LUT table 4258 * programmed in the EEPROM. 4259 */ 4260 static void quirk_mic_x200_dma_alias(struct pci_dev *pdev) 4261 { 4262 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1); 4263 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1); 4264 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1); 4265 } 4266 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias); 4267 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias); 4268 4269 /* 4270 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices 4271 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx). 4272 * 4273 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access 4274 * when IOMMU is enabled. These aliases allow computational unit access to 4275 * host memory. These aliases mark the whole VCA device as one IOMMU 4276 * group. 4277 * 4278 * All possible slot numbers (0x20) are used, since we are unable to tell 4279 * what slot is used on other side. This quirk is intended for both host 4280 * and computational unit sides. The VCA devices have up to five functions 4281 * (four for DMA channels and one additional). 4282 */ 4283 static void quirk_pex_vca_alias(struct pci_dev *pdev) 4284 { 4285 const unsigned int num_pci_slots = 0x20; 4286 unsigned int slot; 4287 4288 for (slot = 0; slot < num_pci_slots; slot++) 4289 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5); 4290 } 4291 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias); 4292 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias); 4293 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias); 4294 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias); 4295 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias); 4296 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias); 4297 4298 /* 4299 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are 4300 * associated not at the root bus, but at a bridge below. This quirk avoids 4301 * generating invalid DMA aliases. 4302 */ 4303 static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev) 4304 { 4305 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT; 4306 } 4307 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000, 4308 quirk_bridge_cavm_thrx2_pcie_root); 4309 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084, 4310 quirk_bridge_cavm_thrx2_pcie_root); 4311 4312 /* 4313 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) 4314 * class code. Fix it. 4315 */ 4316 static void quirk_tw686x_class(struct pci_dev *pdev) 4317 { 4318 u32 class = pdev->class; 4319 4320 /* Use "Multimedia controller" class */ 4321 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01; 4322 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n", 4323 class, pdev->class); 4324 } 4325 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8, 4326 quirk_tw686x_class); 4327 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8, 4328 quirk_tw686x_class); 4329 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8, 4330 quirk_tw686x_class); 4331 DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8, 4332 quirk_tw686x_class); 4333 4334 /* 4335 * Some devices have problems with Transaction Layer Packets with the Relaxed 4336 * Ordering Attribute set. Such devices should mark themselves and other 4337 * device drivers should check before sending TLPs with RO set. 4338 */ 4339 static void quirk_relaxedordering_disable(struct pci_dev *dev) 4340 { 4341 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING; 4342 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n"); 4343 } 4344 4345 /* 4346 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root 4347 * Complex have a Flow Control Credit issue which can cause performance 4348 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set. 4349 */ 4350 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8, 4351 quirk_relaxedordering_disable); 4352 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8, 4353 quirk_relaxedordering_disable); 4354 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8, 4355 quirk_relaxedordering_disable); 4356 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8, 4357 quirk_relaxedordering_disable); 4358 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8, 4359 quirk_relaxedordering_disable); 4360 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8, 4361 quirk_relaxedordering_disable); 4362 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8, 4363 quirk_relaxedordering_disable); 4364 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8, 4365 quirk_relaxedordering_disable); 4366 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8, 4367 quirk_relaxedordering_disable); 4368 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8, 4369 quirk_relaxedordering_disable); 4370 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8, 4371 quirk_relaxedordering_disable); 4372 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8, 4373 quirk_relaxedordering_disable); 4374 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8, 4375 quirk_relaxedordering_disable); 4376 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8, 4377 quirk_relaxedordering_disable); 4378 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8, 4379 quirk_relaxedordering_disable); 4380 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8, 4381 quirk_relaxedordering_disable); 4382 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8, 4383 quirk_relaxedordering_disable); 4384 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8, 4385 quirk_relaxedordering_disable); 4386 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8, 4387 quirk_relaxedordering_disable); 4388 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8, 4389 quirk_relaxedordering_disable); 4390 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8, 4391 quirk_relaxedordering_disable); 4392 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8, 4393 quirk_relaxedordering_disable); 4394 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8, 4395 quirk_relaxedordering_disable); 4396 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8, 4397 quirk_relaxedordering_disable); 4398 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8, 4399 quirk_relaxedordering_disable); 4400 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8, 4401 quirk_relaxedordering_disable); 4402 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8, 4403 quirk_relaxedordering_disable); 4404 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8, 4405 quirk_relaxedordering_disable); 4406 4407 /* 4408 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex 4409 * where Upstream Transaction Layer Packets with the Relaxed Ordering 4410 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering 4411 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules 4412 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0 4413 * November 10, 2010). As a result, on this platform we can't use Relaxed 4414 * Ordering for Upstream TLPs. 4415 */ 4416 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8, 4417 quirk_relaxedordering_disable); 4418 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8, 4419 quirk_relaxedordering_disable); 4420 DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8, 4421 quirk_relaxedordering_disable); 4422 4423 /* 4424 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same 4425 * values for the Attribute as were supplied in the header of the 4426 * corresponding Request, except as explicitly allowed when IDO is used." 4427 * 4428 * If a non-compliant device generates a completion with a different 4429 * attribute than the request, the receiver may accept it (which itself 4430 * seems non-compliant based on sec 2.3.2), or it may handle it as a 4431 * Malformed TLP or an Unexpected Completion, which will probably lead to a 4432 * device access timeout. 4433 * 4434 * If the non-compliant device generates completions with zero attributes 4435 * (instead of copying the attributes from the request), we can work around 4436 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in 4437 * upstream devices so they always generate requests with zero attributes. 4438 * 4439 * This affects other devices under the same Root Port, but since these 4440 * attributes are performance hints, there should be no functional problem. 4441 * 4442 * Note that Configuration Space accesses are never supposed to have TLP 4443 * Attributes, so we're safe waiting till after any Configuration Space 4444 * accesses to do the Root Port fixup. 4445 */ 4446 static void quirk_disable_root_port_attributes(struct pci_dev *pdev) 4447 { 4448 struct pci_dev *root_port = pcie_find_root_port(pdev); 4449 4450 if (!root_port) { 4451 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n"); 4452 return; 4453 } 4454 4455 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n", 4456 dev_name(&pdev->dev)); 4457 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL, 4458 PCI_EXP_DEVCTL_RELAX_EN | 4459 PCI_EXP_DEVCTL_NOSNOOP_EN, 0); 4460 } 4461 4462 /* 4463 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the 4464 * Completion it generates. 4465 */ 4466 static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev) 4467 { 4468 /* 4469 * This mask/compare operation selects for Physical Function 4 on a 4470 * T5. We only need to fix up the Root Port once for any of the 4471 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely 4472 * 0x54xx so we use that one. 4473 */ 4474 if ((pdev->device & 0xff00) == 0x5400) 4475 quirk_disable_root_port_attributes(pdev); 4476 } 4477 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, 4478 quirk_chelsio_T5_disable_root_port_attributes); 4479 4480 /* 4481 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided 4482 * by a device 4483 * @acs_ctrl_req: Bitmask of desired ACS controls 4484 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by 4485 * the hardware design 4486 * 4487 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included 4488 * in @acs_ctrl_ena, i.e., the device provides all the access controls the 4489 * caller desires. Return 0 otherwise. 4490 */ 4491 static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena) 4492 { 4493 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req) 4494 return 1; 4495 return 0; 4496 } 4497 4498 /* 4499 * AMD has indicated that the devices below do not support peer-to-peer 4500 * in any system where they are found in the southbridge with an AMD 4501 * IOMMU in the system. Multifunction devices that do not support 4502 * peer-to-peer between functions can claim to support a subset of ACS. 4503 * Such devices effectively enable request redirect (RR) and completion 4504 * redirect (CR) since all transactions are redirected to the upstream 4505 * root complex. 4506 * 4507 * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/ 4508 * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/ 4509 * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/ 4510 * 4511 * 1002:4385 SBx00 SMBus Controller 4512 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller 4513 * 1002:4383 SBx00 Azalia (Intel HDA) 4514 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller 4515 * 1002:4384 SBx00 PCI to PCI Bridge 4516 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller 4517 * 4518 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15 4519 * 4520 * 1022:780f [AMD] FCH PCI Bridge 4521 * 1022:7809 [AMD] FCH USB OHCI Controller 4522 */ 4523 static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags) 4524 { 4525 #ifdef CONFIG_ACPI 4526 struct acpi_table_header *header = NULL; 4527 acpi_status status; 4528 4529 /* Targeting multifunction devices on the SB (appears on root bus) */ 4530 if (!dev->multifunction || !pci_is_root_bus(dev->bus)) 4531 return -ENODEV; 4532 4533 /* The IVRS table describes the AMD IOMMU */ 4534 status = acpi_get_table("IVRS", 0, &header); 4535 if (ACPI_FAILURE(status)) 4536 return -ENODEV; 4537 4538 acpi_put_table(header); 4539 4540 /* Filter out flags not applicable to multifunction */ 4541 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT); 4542 4543 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR); 4544 #else 4545 return -ENODEV; 4546 #endif 4547 } 4548 4549 static bool pci_quirk_cavium_acs_match(struct pci_dev *dev) 4550 { 4551 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) 4552 return false; 4553 4554 switch (dev->device) { 4555 /* 4556 * Effectively selects all downstream ports for whole ThunderX1 4557 * (which represents 8 SoCs). 4558 */ 4559 case 0xa000 ... 0xa7ff: /* ThunderX1 */ 4560 case 0xaf84: /* ThunderX2 */ 4561 case 0xb884: /* ThunderX3 */ 4562 return true; 4563 default: 4564 return false; 4565 } 4566 } 4567 4568 static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags) 4569 { 4570 if (!pci_quirk_cavium_acs_match(dev)) 4571 return -ENOTTY; 4572 4573 /* 4574 * Cavium Root Ports don't advertise an ACS capability. However, 4575 * the RTL internally implements similar protection as if ACS had 4576 * Source Validation, Request Redirection, Completion Redirection, 4577 * and Upstream Forwarding features enabled. Assert that the 4578 * hardware implements and enables equivalent ACS functionality for 4579 * these flags. 4580 */ 4581 return pci_acs_ctrl_enabled(acs_flags, 4582 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4583 } 4584 4585 static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags) 4586 { 4587 /* 4588 * X-Gene Root Ports matching this quirk do not allow peer-to-peer 4589 * transactions with others, allowing masking out these bits as if they 4590 * were unimplemented in the ACS capability. 4591 */ 4592 return pci_acs_ctrl_enabled(acs_flags, 4593 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4594 } 4595 4596 /* 4597 * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability. 4598 * But the implementation could block peer-to-peer transactions between them 4599 * and provide ACS-like functionality. 4600 */ 4601 static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) 4602 { 4603 if (!pci_is_pcie(dev) || 4604 ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) && 4605 (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM))) 4606 return -ENOTTY; 4607 4608 switch (dev->device) { 4609 case 0x0710 ... 0x071e: 4610 case 0x0721: 4611 case 0x0723 ... 0x0732: 4612 return pci_acs_ctrl_enabled(acs_flags, 4613 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4614 } 4615 4616 return false; 4617 } 4618 4619 /* 4620 * Many Intel PCH Root Ports do provide ACS-like features to disable peer 4621 * transactions and validate bus numbers in requests, but do not provide an 4622 * actual PCIe ACS capability. This is the list of device IDs known to fall 4623 * into that category as provided by Intel in Red Hat bugzilla 1037684. 4624 */ 4625 static const u16 pci_quirk_intel_pch_acs_ids[] = { 4626 /* Ibexpeak PCH */ 4627 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49, 4628 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51, 4629 /* Cougarpoint PCH */ 4630 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17, 4631 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f, 4632 /* Pantherpoint PCH */ 4633 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17, 4634 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f, 4635 /* Lynxpoint-H PCH */ 4636 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17, 4637 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f, 4638 /* Lynxpoint-LP PCH */ 4639 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17, 4640 0x9c18, 0x9c19, 0x9c1a, 0x9c1b, 4641 /* Wildcat PCH */ 4642 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97, 4643 0x9c98, 0x9c99, 0x9c9a, 0x9c9b, 4644 /* Patsburg (X79) PCH */ 4645 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e, 4646 /* Wellsburg (X99) PCH */ 4647 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17, 4648 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e, 4649 /* Lynx Point (9 series) PCH */ 4650 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e, 4651 }; 4652 4653 static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev) 4654 { 4655 int i; 4656 4657 /* Filter out a few obvious non-matches first */ 4658 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) 4659 return false; 4660 4661 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++) 4662 if (pci_quirk_intel_pch_acs_ids[i] == dev->device) 4663 return true; 4664 4665 return false; 4666 } 4667 4668 static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags) 4669 { 4670 if (!pci_quirk_intel_pch_acs_match(dev)) 4671 return -ENOTTY; 4672 4673 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK) 4674 return pci_acs_ctrl_enabled(acs_flags, 4675 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4676 4677 return pci_acs_ctrl_enabled(acs_flags, 0); 4678 } 4679 4680 /* 4681 * These QCOM Root Ports do provide ACS-like features to disable peer 4682 * transactions and validate bus numbers in requests, but do not provide an 4683 * actual PCIe ACS capability. Hardware supports source validation but it 4684 * will report the issue as Completer Abort instead of ACS Violation. 4685 * Hardware doesn't support peer-to-peer and each Root Port is a Root 4686 * Complex with unique segment numbers. It is not possible for one Root 4687 * Port to pass traffic to another Root Port. All PCIe transactions are 4688 * terminated inside the Root Port. 4689 */ 4690 static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags) 4691 { 4692 return pci_acs_ctrl_enabled(acs_flags, 4693 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4694 } 4695 4696 /* 4697 * Each of these NXP Root Ports is in a Root Complex with a unique segment 4698 * number and does provide isolation features to disable peer transactions 4699 * and validate bus numbers in requests, but does not provide an ACS 4700 * capability. 4701 */ 4702 static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags) 4703 { 4704 return pci_acs_ctrl_enabled(acs_flags, 4705 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4706 } 4707 4708 static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags) 4709 { 4710 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) 4711 return -ENOTTY; 4712 4713 /* 4714 * Amazon's Annapurna Labs root ports don't include an ACS capability, 4715 * but do include ACS-like functionality. The hardware doesn't support 4716 * peer-to-peer transactions via the root port and each has a unique 4717 * segment number. 4718 * 4719 * Additionally, the root ports cannot send traffic to each other. 4720 */ 4721 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4722 4723 return acs_flags ? 0 : 1; 4724 } 4725 4726 /* 4727 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in 4728 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2, 4729 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and 4730 * control registers whereas the PCIe spec packs them into words (Rev 3.0, 4731 * 7.16 ACS Extended Capability). The bit definitions are correct, but the 4732 * control register is at offset 8 instead of 6 and we should probably use 4733 * dword accesses to them. This applies to the following PCI Device IDs, as 4734 * found in volume 1 of the datasheet[2]: 4735 * 4736 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16} 4737 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20} 4738 * 4739 * N.B. This doesn't fix what lspci shows. 4740 * 4741 * The 100 series chipset specification update includes this as errata #23[3]. 4742 * 4743 * The 200 series chipset (Union Point) has the same bug according to the 4744 * specification update (Intel 200 Series Chipset Family Platform Controller 4745 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001, 4746 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this 4747 * chipset include: 4748 * 4749 * 0xa290-0xa29f PCI Express Root port #{0-16} 4750 * 0xa2e7-0xa2ee PCI Express Root port #{17-24} 4751 * 4752 * Mobile chipsets are also affected, 7th & 8th Generation 4753 * Specification update confirms ACS errata 22, status no fix: (7th Generation 4754 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel 4755 * Processor Family I/O for U Quad Core Platforms Specification Update, 4756 * August 2017, Revision 002, Document#: 334660-002)[6] 4757 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O 4758 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U 4759 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7] 4760 * 4761 * 0x9d10-0x9d1b PCI Express Root port #{1-12} 4762 * 4763 * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html 4764 * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html 4765 * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html 4766 * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html 4767 * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html 4768 * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html 4769 * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html 4770 */ 4771 static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev) 4772 { 4773 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) 4774 return false; 4775 4776 switch (dev->device) { 4777 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */ 4778 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */ 4779 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */ 4780 return true; 4781 } 4782 4783 return false; 4784 } 4785 4786 #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4) 4787 4788 static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags) 4789 { 4790 int pos; 4791 u32 cap, ctrl; 4792 4793 if (!pci_quirk_intel_spt_pch_acs_match(dev)) 4794 return -ENOTTY; 4795 4796 pos = dev->acs_cap; 4797 if (!pos) 4798 return -ENOTTY; 4799 4800 /* see pci_acs_flags_enabled() */ 4801 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); 4802 acs_flags &= (cap | PCI_ACS_EC); 4803 4804 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); 4805 4806 return pci_acs_ctrl_enabled(acs_flags, ctrl); 4807 } 4808 4809 static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags) 4810 { 4811 /* 4812 * SV, TB, and UF are not relevant to multifunction endpoints. 4813 * 4814 * Multifunction devices are only required to implement RR, CR, and DT 4815 * in their ACS capability if they support peer-to-peer transactions. 4816 * Devices matching this quirk have been verified by the vendor to not 4817 * perform peer-to-peer with other functions, allowing us to mask out 4818 * these bits as if they were unimplemented in the ACS capability. 4819 */ 4820 return pci_acs_ctrl_enabled(acs_flags, 4821 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR | 4822 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT); 4823 } 4824 4825 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags) 4826 { 4827 /* 4828 * Intel RCiEP's are required to allow p2p only on translated 4829 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16, 4830 * "Root-Complex Peer to Peer Considerations". 4831 */ 4832 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END) 4833 return -ENOTTY; 4834 4835 return pci_acs_ctrl_enabled(acs_flags, 4836 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4837 } 4838 4839 static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags) 4840 { 4841 /* 4842 * iProc PAXB Root Ports don't advertise an ACS capability, but 4843 * they do not allow peer-to-peer transactions between Root Ports. 4844 * Allow each Root Port to be in a separate IOMMU group by masking 4845 * SV/RR/CR/UF bits. 4846 */ 4847 return pci_acs_ctrl_enabled(acs_flags, 4848 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4849 } 4850 4851 /* 4852 * Wangxun 10G/1G NICs have no ACS capability, and on multi-function 4853 * devices, peer-to-peer transactions are not be used between the functions. 4854 * So add an ACS quirk for below devices to isolate functions. 4855 * SFxxx 1G NICs(em). 4856 * RP1000/RP2000 10G NICs(sp). 4857 */ 4858 static int pci_quirk_wangxun_nic_acs(struct pci_dev *dev, u16 acs_flags) 4859 { 4860 switch (dev->device) { 4861 case 0x0100 ... 0x010F: 4862 case 0x1001: 4863 case 0x2001: 4864 return pci_acs_ctrl_enabled(acs_flags, 4865 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4866 } 4867 4868 return false; 4869 } 4870 4871 static const struct pci_dev_acs_enabled { 4872 u16 vendor; 4873 u16 device; 4874 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags); 4875 } pci_dev_acs_enabled[] = { 4876 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs }, 4877 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs }, 4878 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs }, 4879 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs }, 4880 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs }, 4881 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs }, 4882 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs }, 4883 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs }, 4884 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs }, 4885 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs }, 4886 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs }, 4887 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs }, 4888 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs }, 4889 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs }, 4890 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs }, 4891 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs }, 4892 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs }, 4893 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs }, 4894 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs }, 4895 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs }, 4896 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs }, 4897 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs }, 4898 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs }, 4899 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs }, 4900 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs }, 4901 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs }, 4902 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs }, 4903 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs }, 4904 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs }, 4905 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs }, 4906 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs }, 4907 /* 82580 */ 4908 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs }, 4909 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs }, 4910 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs }, 4911 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs }, 4912 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs }, 4913 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs }, 4914 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs }, 4915 /* 82576 */ 4916 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs }, 4917 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs }, 4918 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs }, 4919 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs }, 4920 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs }, 4921 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs }, 4922 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs }, 4923 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs }, 4924 /* 82575 */ 4925 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs }, 4926 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs }, 4927 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs }, 4928 /* I350 */ 4929 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs }, 4930 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs }, 4931 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs }, 4932 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs }, 4933 /* 82571 (Quads omitted due to non-ACS switch) */ 4934 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs }, 4935 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs }, 4936 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs }, 4937 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs }, 4938 /* I219 */ 4939 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs }, 4940 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs }, 4941 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs }, 4942 /* QCOM QDF2xxx root ports */ 4943 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs }, 4944 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs }, 4945 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */ 4946 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs }, 4947 /* Intel PCH root ports */ 4948 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs }, 4949 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs }, 4950 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */ 4951 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */ 4952 /* Cavium ThunderX */ 4953 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs }, 4954 /* Cavium multi-function devices */ 4955 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs }, 4956 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs }, 4957 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs }, 4958 /* APM X-Gene */ 4959 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs }, 4960 /* Ampere Computing */ 4961 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs }, 4962 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs }, 4963 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs }, 4964 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs }, 4965 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs }, 4966 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs }, 4967 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs }, 4968 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs }, 4969 /* Broadcom multi-function device */ 4970 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs }, 4971 { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs }, 4972 { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs }, 4973 { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs }, 4974 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs }, 4975 /* Amazon Annapurna Labs */ 4976 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs }, 4977 /* Zhaoxin multi-function devices */ 4978 { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs }, 4979 { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs }, 4980 { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs }, 4981 /* NXP root ports, xx=16, 12, or 08 cores */ 4982 /* LX2xx0A : without security features + CAN-FD */ 4983 { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs }, 4984 { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs }, 4985 { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs }, 4986 /* LX2xx0C : security features + CAN-FD */ 4987 { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs }, 4988 { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs }, 4989 { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs }, 4990 /* LX2xx0E : security features + CAN */ 4991 { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs }, 4992 { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs }, 4993 { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs }, 4994 /* LX2xx0N : without security features + CAN */ 4995 { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs }, 4996 { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs }, 4997 { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs }, 4998 /* LX2xx2A : without security features + CAN-FD */ 4999 { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs }, 5000 { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs }, 5001 { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs }, 5002 /* LX2xx2C : security features + CAN-FD */ 5003 { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs }, 5004 { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs }, 5005 { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs }, 5006 /* LX2xx2E : security features + CAN */ 5007 { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs }, 5008 { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs }, 5009 { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs }, 5010 /* LX2xx2N : without security features + CAN */ 5011 { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs }, 5012 { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs }, 5013 { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs }, 5014 /* Zhaoxin Root/Downstream Ports */ 5015 { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs }, 5016 /* Wangxun nics */ 5017 { PCI_VENDOR_ID_WANGXUN, PCI_ANY_ID, pci_quirk_wangxun_nic_acs }, 5018 { 0 } 5019 }; 5020 5021 /* 5022 * pci_dev_specific_acs_enabled - check whether device provides ACS controls 5023 * @dev: PCI device 5024 * @acs_flags: Bitmask of desired ACS controls 5025 * 5026 * Returns: 5027 * -ENOTTY: No quirk applies to this device; we can't tell whether the 5028 * device provides the desired controls 5029 * 0: Device does not provide all the desired controls 5030 * >0: Device provides all the controls in @acs_flags 5031 */ 5032 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags) 5033 { 5034 const struct pci_dev_acs_enabled *i; 5035 int ret; 5036 5037 /* 5038 * Allow devices that do not expose standard PCIe ACS capabilities 5039 * or control to indicate their support here. Multi-function express 5040 * devices which do not allow internal peer-to-peer between functions, 5041 * but do not implement PCIe ACS may wish to return true here. 5042 */ 5043 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) { 5044 if ((i->vendor == dev->vendor || 5045 i->vendor == (u16)PCI_ANY_ID) && 5046 (i->device == dev->device || 5047 i->device == (u16)PCI_ANY_ID)) { 5048 ret = i->acs_enabled(dev, acs_flags); 5049 if (ret >= 0) 5050 return ret; 5051 } 5052 } 5053 5054 return -ENOTTY; 5055 } 5056 5057 /* Config space offset of Root Complex Base Address register */ 5058 #define INTEL_LPC_RCBA_REG 0xf0 5059 /* 31:14 RCBA address */ 5060 #define INTEL_LPC_RCBA_MASK 0xffffc000 5061 /* RCBA Enable */ 5062 #define INTEL_LPC_RCBA_ENABLE (1 << 0) 5063 5064 /* Backbone Scratch Pad Register */ 5065 #define INTEL_BSPR_REG 0x1104 5066 /* Backbone Peer Non-Posted Disable */ 5067 #define INTEL_BSPR_REG_BPNPD (1 << 8) 5068 /* Backbone Peer Posted Disable */ 5069 #define INTEL_BSPR_REG_BPPD (1 << 9) 5070 5071 /* Upstream Peer Decode Configuration Register */ 5072 #define INTEL_UPDCR_REG 0x1014 5073 /* 5:0 Peer Decode Enable bits */ 5074 #define INTEL_UPDCR_REG_MASK 0x3f 5075 5076 static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev) 5077 { 5078 u32 rcba, bspr, updcr; 5079 void __iomem *rcba_mem; 5080 5081 /* 5082 * Read the RCBA register from the LPC (D31:F0). PCH root ports 5083 * are D28:F* and therefore get probed before LPC, thus we can't 5084 * use pci_get_slot()/pci_read_config_dword() here. 5085 */ 5086 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0), 5087 INTEL_LPC_RCBA_REG, &rcba); 5088 if (!(rcba & INTEL_LPC_RCBA_ENABLE)) 5089 return -EINVAL; 5090 5091 rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK, 5092 PAGE_ALIGN(INTEL_UPDCR_REG)); 5093 if (!rcba_mem) 5094 return -ENOMEM; 5095 5096 /* 5097 * The BSPR can disallow peer cycles, but it's set by soft strap and 5098 * therefore read-only. If both posted and non-posted peer cycles are 5099 * disallowed, we're ok. If either are allowed, then we need to use 5100 * the UPDCR to disable peer decodes for each port. This provides the 5101 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF 5102 */ 5103 bspr = readl(rcba_mem + INTEL_BSPR_REG); 5104 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD; 5105 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) { 5106 updcr = readl(rcba_mem + INTEL_UPDCR_REG); 5107 if (updcr & INTEL_UPDCR_REG_MASK) { 5108 pci_info(dev, "Disabling UPDCR peer decodes\n"); 5109 updcr &= ~INTEL_UPDCR_REG_MASK; 5110 writel(updcr, rcba_mem + INTEL_UPDCR_REG); 5111 } 5112 } 5113 5114 iounmap(rcba_mem); 5115 return 0; 5116 } 5117 5118 /* Miscellaneous Port Configuration register */ 5119 #define INTEL_MPC_REG 0xd8 5120 /* MPC: Invalid Receive Bus Number Check Enable */ 5121 #define INTEL_MPC_REG_IRBNCE (1 << 26) 5122 5123 static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev) 5124 { 5125 u32 mpc; 5126 5127 /* 5128 * When enabled, the IRBNCE bit of the MPC register enables the 5129 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which 5130 * ensures that requester IDs fall within the bus number range 5131 * of the bridge. Enable if not already. 5132 */ 5133 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc); 5134 if (!(mpc & INTEL_MPC_REG_IRBNCE)) { 5135 pci_info(dev, "Enabling MPC IRBNCE\n"); 5136 mpc |= INTEL_MPC_REG_IRBNCE; 5137 pci_write_config_word(dev, INTEL_MPC_REG, mpc); 5138 } 5139 } 5140 5141 /* 5142 * Currently this quirk does the equivalent of 5143 * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF 5144 * 5145 * TODO: This quirk also needs to do equivalent of PCI_ACS_TB, 5146 * if dev->external_facing || dev->untrusted 5147 */ 5148 static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev) 5149 { 5150 if (!pci_quirk_intel_pch_acs_match(dev)) 5151 return -ENOTTY; 5152 5153 if (pci_quirk_enable_intel_lpc_acs(dev)) { 5154 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n"); 5155 return 0; 5156 } 5157 5158 pci_quirk_enable_intel_rp_mpc_acs(dev); 5159 5160 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK; 5161 5162 pci_info(dev, "Intel PCH root port ACS workaround enabled\n"); 5163 5164 return 0; 5165 } 5166 5167 static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev) 5168 { 5169 int pos; 5170 u32 cap, ctrl; 5171 5172 if (!pci_quirk_intel_spt_pch_acs_match(dev)) 5173 return -ENOTTY; 5174 5175 pos = dev->acs_cap; 5176 if (!pos) 5177 return -ENOTTY; 5178 5179 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); 5180 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); 5181 5182 ctrl |= (cap & PCI_ACS_SV); 5183 ctrl |= (cap & PCI_ACS_RR); 5184 ctrl |= (cap & PCI_ACS_CR); 5185 ctrl |= (cap & PCI_ACS_UF); 5186 5187 if (pci_ats_disabled() || dev->external_facing || dev->untrusted) 5188 ctrl |= (cap & PCI_ACS_TB); 5189 5190 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl); 5191 5192 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n"); 5193 5194 return 0; 5195 } 5196 5197 static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev) 5198 { 5199 int pos; 5200 u32 cap, ctrl; 5201 5202 if (!pci_quirk_intel_spt_pch_acs_match(dev)) 5203 return -ENOTTY; 5204 5205 pos = dev->acs_cap; 5206 if (!pos) 5207 return -ENOTTY; 5208 5209 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); 5210 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); 5211 5212 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC); 5213 5214 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl); 5215 5216 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n"); 5217 5218 return 0; 5219 } 5220 5221 static const struct pci_dev_acs_ops { 5222 u16 vendor; 5223 u16 device; 5224 int (*enable_acs)(struct pci_dev *dev); 5225 int (*disable_acs_redir)(struct pci_dev *dev); 5226 } pci_dev_acs_ops[] = { 5227 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 5228 .enable_acs = pci_quirk_enable_intel_pch_acs, 5229 }, 5230 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, 5231 .enable_acs = pci_quirk_enable_intel_spt_pch_acs, 5232 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir, 5233 }, 5234 }; 5235 5236 int pci_dev_specific_enable_acs(struct pci_dev *dev) 5237 { 5238 const struct pci_dev_acs_ops *p; 5239 int i, ret; 5240 5241 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) { 5242 p = &pci_dev_acs_ops[i]; 5243 if ((p->vendor == dev->vendor || 5244 p->vendor == (u16)PCI_ANY_ID) && 5245 (p->device == dev->device || 5246 p->device == (u16)PCI_ANY_ID) && 5247 p->enable_acs) { 5248 ret = p->enable_acs(dev); 5249 if (ret >= 0) 5250 return ret; 5251 } 5252 } 5253 5254 return -ENOTTY; 5255 } 5256 5257 int pci_dev_specific_disable_acs_redir(struct pci_dev *dev) 5258 { 5259 const struct pci_dev_acs_ops *p; 5260 int i, ret; 5261 5262 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) { 5263 p = &pci_dev_acs_ops[i]; 5264 if ((p->vendor == dev->vendor || 5265 p->vendor == (u16)PCI_ANY_ID) && 5266 (p->device == dev->device || 5267 p->device == (u16)PCI_ANY_ID) && 5268 p->disable_acs_redir) { 5269 ret = p->disable_acs_redir(dev); 5270 if (ret >= 0) 5271 return ret; 5272 } 5273 } 5274 5275 return -ENOTTY; 5276 } 5277 5278 /* 5279 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with 5280 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The 5281 * Next Capability pointer in the MSI Capability Structure should point to 5282 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating 5283 * the list. 5284 */ 5285 static void quirk_intel_qat_vf_cap(struct pci_dev *pdev) 5286 { 5287 int pos, i = 0; 5288 u8 next_cap; 5289 u16 reg16, *cap; 5290 struct pci_cap_saved_state *state; 5291 5292 /* Bail if the hardware bug is fixed */ 5293 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP)) 5294 return; 5295 5296 /* Bail if MSI Capability Structure is not found for some reason */ 5297 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); 5298 if (!pos) 5299 return; 5300 5301 /* 5302 * Bail if Next Capability pointer in the MSI Capability Structure 5303 * is not the expected incorrect 0x00. 5304 */ 5305 pci_read_config_byte(pdev, pos + 1, &next_cap); 5306 if (next_cap) 5307 return; 5308 5309 /* 5310 * PCIe Capability Structure is expected to be at 0x50 and should 5311 * terminate the list (Next Capability pointer is 0x00). Verify 5312 * Capability Id and Next Capability pointer is as expected. 5313 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext() 5314 * to correctly set kernel data structures which have already been 5315 * set incorrectly due to the hardware bug. 5316 */ 5317 pos = 0x50; 5318 pci_read_config_word(pdev, pos, ®16); 5319 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) { 5320 u32 status; 5321 #ifndef PCI_EXP_SAVE_REGS 5322 #define PCI_EXP_SAVE_REGS 7 5323 #endif 5324 int size = PCI_EXP_SAVE_REGS * sizeof(u16); 5325 5326 pdev->pcie_cap = pos; 5327 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16); 5328 pdev->pcie_flags_reg = reg16; 5329 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16); 5330 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD; 5331 5332 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE; 5333 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) != 5334 PCIBIOS_SUCCESSFUL || (status == 0xffffffff)) 5335 pdev->cfg_size = PCI_CFG_SPACE_SIZE; 5336 5337 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP)) 5338 return; 5339 5340 /* Save PCIe cap */ 5341 state = kzalloc(sizeof(*state) + size, GFP_KERNEL); 5342 if (!state) 5343 return; 5344 5345 state->cap.cap_nr = PCI_CAP_ID_EXP; 5346 state->cap.cap_extended = 0; 5347 state->cap.size = size; 5348 cap = (u16 *)&state->cap.data[0]; 5349 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]); 5350 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]); 5351 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]); 5352 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]); 5353 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]); 5354 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]); 5355 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]); 5356 hlist_add_head(&state->next, &pdev->saved_cap_space); 5357 } 5358 } 5359 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap); 5360 5361 /* 5362 * FLR may cause the following to devices to hang: 5363 * 5364 * AMD Starship/Matisse HD Audio Controller 0x1487 5365 * AMD Starship USB 3.0 Host Controller 0x148c 5366 * AMD Matisse USB 3.0 Host Controller 0x149c 5367 * Intel 82579LM Gigabit Ethernet Controller 0x1502 5368 * Intel 82579V Gigabit Ethernet Controller 0x1503 5369 * 5370 */ 5371 static void quirk_no_flr(struct pci_dev *dev) 5372 { 5373 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET; 5374 } 5375 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr); 5376 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr); 5377 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr); 5378 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x7901, quirk_no_flr); 5379 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr); 5380 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr); 5381 5382 /* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */ 5383 static void quirk_no_flr_snet(struct pci_dev *dev) 5384 { 5385 if (dev->revision == 0x1) 5386 quirk_no_flr(dev); 5387 } 5388 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet); 5389 5390 static void quirk_no_ext_tags(struct pci_dev *pdev) 5391 { 5392 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus); 5393 5394 if (!bridge) 5395 return; 5396 5397 bridge->no_ext_tags = 1; 5398 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n"); 5399 5400 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL); 5401 } 5402 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags); 5403 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags); 5404 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags); 5405 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags); 5406 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags); 5407 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags); 5408 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags); 5409 5410 #ifdef CONFIG_PCI_ATS 5411 /* 5412 * Some devices require additional driver setup to enable ATS. Don't use 5413 * ATS for those devices as ATS will be enabled before the driver has had a 5414 * chance to load and configure the device. 5415 */ 5416 static void quirk_amd_harvest_no_ats(struct pci_dev *pdev) 5417 { 5418 if (pdev->device == 0x15d8) { 5419 if (pdev->revision == 0xcf && 5420 pdev->subsystem_vendor == 0xea50 && 5421 (pdev->subsystem_device == 0xce19 || 5422 pdev->subsystem_device == 0xcc10 || 5423 pdev->subsystem_device == 0xcc08)) 5424 goto no_ats; 5425 else 5426 return; 5427 } 5428 5429 no_ats: 5430 pci_info(pdev, "disabling ATS\n"); 5431 pdev->ats_cap = 0; 5432 } 5433 5434 /* AMD Stoney platform GPU */ 5435 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats); 5436 /* AMD Iceland dGPU */ 5437 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats); 5438 /* AMD Navi10 dGPU */ 5439 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7310, quirk_amd_harvest_no_ats); 5440 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats); 5441 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7318, quirk_amd_harvest_no_ats); 5442 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7319, quirk_amd_harvest_no_ats); 5443 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731a, quirk_amd_harvest_no_ats); 5444 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731b, quirk_amd_harvest_no_ats); 5445 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731e, quirk_amd_harvest_no_ats); 5446 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731f, quirk_amd_harvest_no_ats); 5447 /* AMD Navi14 dGPU */ 5448 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats); 5449 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats); 5450 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7347, quirk_amd_harvest_no_ats); 5451 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x734f, quirk_amd_harvest_no_ats); 5452 /* AMD Raven platform iGPU */ 5453 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats); 5454 #endif /* CONFIG_PCI_ATS */ 5455 5456 /* Freescale PCIe doesn't support MSI in RC mode */ 5457 static void quirk_fsl_no_msi(struct pci_dev *pdev) 5458 { 5459 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT) 5460 pdev->no_msi = 1; 5461 } 5462 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi); 5463 5464 /* 5465 * Although not allowed by the spec, some multi-function devices have 5466 * dependencies of one function (consumer) on another (supplier). For the 5467 * consumer to work in D0, the supplier must also be in D0. Create a 5468 * device link from the consumer to the supplier to enforce this 5469 * dependency. Runtime PM is allowed by default on the consumer to prevent 5470 * it from permanently keeping the supplier awake. 5471 */ 5472 static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer, 5473 unsigned int supplier, unsigned int class, 5474 unsigned int class_shift) 5475 { 5476 struct pci_dev *supplier_pdev; 5477 5478 if (PCI_FUNC(pdev->devfn) != consumer) 5479 return; 5480 5481 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus), 5482 pdev->bus->number, 5483 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier)); 5484 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) { 5485 pci_dev_put(supplier_pdev); 5486 return; 5487 } 5488 5489 if (device_link_add(&pdev->dev, &supplier_pdev->dev, 5490 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME)) 5491 pci_info(pdev, "D0 power state depends on %s\n", 5492 pci_name(supplier_pdev)); 5493 else 5494 pci_err(pdev, "Cannot enforce power dependency on %s\n", 5495 pci_name(supplier_pdev)); 5496 5497 pm_runtime_allow(&pdev->dev); 5498 pci_dev_put(supplier_pdev); 5499 } 5500 5501 /* 5502 * Create device link for GPUs with integrated HDA controller for streaming 5503 * audio to attached displays. 5504 */ 5505 static void quirk_gpu_hda(struct pci_dev *hda) 5506 { 5507 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16); 5508 } 5509 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 5510 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); 5511 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID, 5512 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); 5513 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 5514 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); 5515 5516 /* 5517 * Create device link for GPUs with integrated USB xHCI Host 5518 * controller to VGA. 5519 */ 5520 static void quirk_gpu_usb(struct pci_dev *usb) 5521 { 5522 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16); 5523 } 5524 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 5525 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb); 5526 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 5527 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb); 5528 5529 /* 5530 * Create device link for GPUs with integrated Type-C UCSI controller 5531 * to VGA. Currently there is no class code defined for UCSI device over PCI 5532 * so using UNKNOWN class for now and it will be updated when UCSI 5533 * over PCI gets a class code. 5534 */ 5535 #define PCI_CLASS_SERIAL_UNKNOWN 0x0c80 5536 static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi) 5537 { 5538 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16); 5539 } 5540 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 5541 PCI_CLASS_SERIAL_UNKNOWN, 8, 5542 quirk_gpu_usb_typec_ucsi); 5543 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, 5544 PCI_CLASS_SERIAL_UNKNOWN, 8, 5545 quirk_gpu_usb_typec_ucsi); 5546 5547 /* 5548 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it 5549 * disabled. https://devtalk.nvidia.com/default/topic/1024022 5550 */ 5551 static void quirk_nvidia_hda(struct pci_dev *gpu) 5552 { 5553 u8 hdr_type; 5554 u32 val; 5555 5556 /* There was no integrated HDA controller before MCP89 */ 5557 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M) 5558 return; 5559 5560 /* Bit 25 at offset 0x488 enables the HDA controller */ 5561 pci_read_config_dword(gpu, 0x488, &val); 5562 if (val & BIT(25)) 5563 return; 5564 5565 pci_info(gpu, "Enabling HDA controller\n"); 5566 pci_write_config_dword(gpu, 0x488, val | BIT(25)); 5567 5568 /* The GPU becomes a multi-function device when the HDA is enabled */ 5569 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type); 5570 gpu->multifunction = !!(hdr_type & 0x80); 5571 } 5572 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 5573 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda); 5574 DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, 5575 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda); 5576 5577 /* 5578 * Some IDT switches incorrectly flag an ACS Source Validation error on 5579 * completions for config read requests even though PCIe r4.0, sec 5580 * 6.12.1.1, says that completions are never affected by ACS Source 5581 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36: 5582 * 5583 * Item #36 - Downstream port applies ACS Source Validation to Completions 5584 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that 5585 * completions are never affected by ACS Source Validation. However, 5586 * completions received by a downstream port of the PCIe switch from a 5587 * device that has not yet captured a PCIe bus number are incorrectly 5588 * dropped by ACS Source Validation by the switch downstream port. 5589 * 5590 * The workaround suggested by IDT is to issue a config write to the 5591 * downstream device before issuing the first config read. This allows the 5592 * downstream device to capture its bus and device numbers (see PCIe r4.0, 5593 * sec 2.2.9), thus avoiding the ACS error on the completion. 5594 * 5595 * However, we don't know when the device is ready to accept the config 5596 * write, so we do config reads until we receive a non-Config Request Retry 5597 * Status, then do the config write. 5598 * 5599 * To avoid hitting the erratum when doing the config reads, we disable ACS 5600 * SV around this process. 5601 */ 5602 int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout) 5603 { 5604 int pos; 5605 u16 ctrl = 0; 5606 bool found; 5607 struct pci_dev *bridge = bus->self; 5608 5609 pos = bridge->acs_cap; 5610 5611 /* Disable ACS SV before initial config reads */ 5612 if (pos) { 5613 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl); 5614 if (ctrl & PCI_ACS_SV) 5615 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, 5616 ctrl & ~PCI_ACS_SV); 5617 } 5618 5619 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout); 5620 5621 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */ 5622 if (found) 5623 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0); 5624 5625 /* Re-enable ACS_SV if it was previously enabled */ 5626 if (ctrl & PCI_ACS_SV) 5627 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl); 5628 5629 return found; 5630 } 5631 5632 /* 5633 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between 5634 * NT endpoints via the internal switch fabric. These IDs replace the 5635 * originating requestor ID TLPs which access host memory on peer NTB 5636 * ports. Therefore, all proxy IDs must be aliased to the NTB device 5637 * to permit access when the IOMMU is turned on. 5638 */ 5639 static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev) 5640 { 5641 void __iomem *mmio; 5642 struct ntb_info_regs __iomem *mmio_ntb; 5643 struct ntb_ctrl_regs __iomem *mmio_ctrl; 5644 u64 partition_map; 5645 u8 partition; 5646 int pp; 5647 5648 if (pci_enable_device(pdev)) { 5649 pci_err(pdev, "Cannot enable Switchtec device\n"); 5650 return; 5651 } 5652 5653 mmio = pci_iomap(pdev, 0, 0); 5654 if (mmio == NULL) { 5655 pci_disable_device(pdev); 5656 pci_err(pdev, "Cannot iomap Switchtec device\n"); 5657 return; 5658 } 5659 5660 pci_info(pdev, "Setting Switchtec proxy ID aliases\n"); 5661 5662 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET; 5663 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET; 5664 5665 partition = ioread8(&mmio_ntb->partition_id); 5666 5667 partition_map = ioread32(&mmio_ntb->ep_map); 5668 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32; 5669 partition_map &= ~(1ULL << partition); 5670 5671 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) { 5672 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl; 5673 u32 table_sz = 0; 5674 int te; 5675 5676 if (!(partition_map & (1ULL << pp))) 5677 continue; 5678 5679 pci_dbg(pdev, "Processing partition %d\n", pp); 5680 5681 mmio_peer_ctrl = &mmio_ctrl[pp]; 5682 5683 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size); 5684 if (!table_sz) { 5685 pci_warn(pdev, "Partition %d table_sz 0\n", pp); 5686 continue; 5687 } 5688 5689 if (table_sz > 512) { 5690 pci_warn(pdev, 5691 "Invalid Switchtec partition %d table_sz %d\n", 5692 pp, table_sz); 5693 continue; 5694 } 5695 5696 for (te = 0; te < table_sz; te++) { 5697 u32 rid_entry; 5698 u8 devfn; 5699 5700 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]); 5701 devfn = (rid_entry >> 1) & 0xFF; 5702 pci_dbg(pdev, 5703 "Aliasing Partition %d Proxy ID %02x.%d\n", 5704 pp, PCI_SLOT(devfn), PCI_FUNC(devfn)); 5705 pci_add_dma_alias(pdev, devfn, 1); 5706 } 5707 } 5708 5709 pci_iounmap(pdev, mmio); 5710 pci_disable_device(pdev); 5711 } 5712 #define SWITCHTEC_QUIRK(vid) \ 5713 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \ 5714 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias) 5715 5716 SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */ 5717 SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */ 5718 SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */ 5719 SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */ 5720 SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */ 5721 SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */ 5722 SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */ 5723 SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */ 5724 SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */ 5725 SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */ 5726 SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */ 5727 SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */ 5728 SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */ 5729 SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */ 5730 SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */ 5731 SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */ 5732 SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */ 5733 SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */ 5734 SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */ 5735 SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */ 5736 SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */ 5737 SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */ 5738 SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */ 5739 SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */ 5740 SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */ 5741 SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */ 5742 SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */ 5743 SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */ 5744 SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */ 5745 SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */ 5746 SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */ 5747 SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */ 5748 SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */ 5749 SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */ 5750 SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */ 5751 SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */ 5752 SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */ 5753 SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */ 5754 SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */ 5755 SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */ 5756 SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */ 5757 SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */ 5758 SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */ 5759 SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */ 5760 SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */ 5761 SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */ 5762 SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */ 5763 SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */ 5764 SWITCHTEC_QUIRK(0x4352); /* PFXA 52XG4 */ 5765 SWITCHTEC_QUIRK(0x4336); /* PFXA 36XG4 */ 5766 SWITCHTEC_QUIRK(0x4328); /* PFXA 28XG4 */ 5767 SWITCHTEC_QUIRK(0x4452); /* PSXA 52XG4 */ 5768 SWITCHTEC_QUIRK(0x4436); /* PSXA 36XG4 */ 5769 SWITCHTEC_QUIRK(0x4428); /* PSXA 28XG4 */ 5770 SWITCHTEC_QUIRK(0x4552); /* PAXA 52XG4 */ 5771 SWITCHTEC_QUIRK(0x4536); /* PAXA 36XG4 */ 5772 SWITCHTEC_QUIRK(0x4528); /* PAXA 28XG4 */ 5773 5774 /* 5775 * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints. 5776 * These IDs are used to forward responses to the originator on the other 5777 * side of the NTB. Alias all possible IDs to the NTB to permit access when 5778 * the IOMMU is turned on. 5779 */ 5780 static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev) 5781 { 5782 pci_info(pdev, "Setting PLX NTB proxy ID aliases\n"); 5783 /* PLX NTB may use all 256 devfns */ 5784 pci_add_dma_alias(pdev, 0, 256); 5785 } 5786 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias); 5787 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias); 5788 5789 /* 5790 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does 5791 * not always reset the secondary Nvidia GPU between reboots if the system 5792 * is configured to use Hybrid Graphics mode. This results in the GPU 5793 * being left in whatever state it was in during the *previous* boot, which 5794 * causes spurious interrupts from the GPU, which in turn causes us to 5795 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly, 5796 * this also completely breaks nouveau. 5797 * 5798 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a 5799 * clean state and fixes all these issues. 5800 * 5801 * When the machine is configured in Dedicated display mode, the issue 5802 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this 5803 * mode, so we can detect that and avoid resetting it. 5804 */ 5805 static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev) 5806 { 5807 void __iomem *map; 5808 int ret; 5809 5810 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO || 5811 pdev->subsystem_device != 0x222e || 5812 !pci_reset_supported(pdev)) 5813 return; 5814 5815 if (pci_enable_device_mem(pdev)) 5816 return; 5817 5818 /* 5819 * Based on nvkm_device_ctor() in 5820 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c 5821 */ 5822 map = pci_iomap(pdev, 0, 0x23000); 5823 if (!map) { 5824 pci_err(pdev, "Can't map MMIO space\n"); 5825 goto out_disable; 5826 } 5827 5828 /* 5829 * Make sure the GPU looks like it's been POSTed before resetting 5830 * it. 5831 */ 5832 if (ioread32(map + 0x2240c) & 0x2) { 5833 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n"); 5834 ret = pci_reset_bus(pdev); 5835 if (ret < 0) 5836 pci_err(pdev, "Failed to reset GPU: %d\n", ret); 5837 } 5838 5839 iounmap(map); 5840 out_disable: 5841 pci_disable_device(pdev); 5842 } 5843 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1, 5844 PCI_CLASS_DISPLAY_VGA, 8, 5845 quirk_reset_lenovo_thinkpad_p50_nvgpu); 5846 5847 /* 5848 * Device [1b21:2142] 5849 * When in D0, PME# doesn't get asserted when plugging USB 3.0 device. 5850 */ 5851 static void pci_fixup_no_d0_pme(struct pci_dev *dev) 5852 { 5853 pci_info(dev, "PME# does not work under D0, disabling it\n"); 5854 dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT); 5855 } 5856 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme); 5857 5858 /* 5859 * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI] 5860 * 5861 * These devices advertise PME# support in all power states but don't 5862 * reliably assert it. 5863 * 5864 * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf) 5865 * says "The MSI Function is not implemented on this device" in chapters 5866 * 7.3.27, 7.3.29-7.3.31. 5867 */ 5868 static void pci_fixup_no_msi_no_pme(struct pci_dev *dev) 5869 { 5870 #ifdef CONFIG_PCI_MSI 5871 pci_info(dev, "MSI is not implemented on this device, disabling it\n"); 5872 dev->no_msi = 1; 5873 #endif 5874 pci_info(dev, "PME# is unreliable, disabling it\n"); 5875 dev->pme_support = 0; 5876 } 5877 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme); 5878 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme); 5879 5880 static void apex_pci_fixup_class(struct pci_dev *pdev) 5881 { 5882 pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class; 5883 } 5884 DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a, 5885 PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class); 5886 5887 /* 5888 * Pericom PI7C9X2G404/PI7C9X2G304/PI7C9X2G303 switch erratum E5 - 5889 * ACS P2P Request Redirect is not functional 5890 * 5891 * When ACS P2P Request Redirect is enabled and bandwidth is not balanced 5892 * between upstream and downstream ports, packets are queued in an internal 5893 * buffer until CPLD packet. The workaround is to use the switch in store and 5894 * forward mode. 5895 */ 5896 #define PI7C9X2Gxxx_MODE_REG 0x74 5897 #define PI7C9X2Gxxx_STORE_FORWARD_MODE BIT(0) 5898 static void pci_fixup_pericom_acs_store_forward(struct pci_dev *pdev) 5899 { 5900 struct pci_dev *upstream; 5901 u16 val; 5902 5903 /* Downstream ports only */ 5904 if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM) 5905 return; 5906 5907 /* Check for ACS P2P Request Redirect use */ 5908 if (!pdev->acs_cap) 5909 return; 5910 pci_read_config_word(pdev, pdev->acs_cap + PCI_ACS_CTRL, &val); 5911 if (!(val & PCI_ACS_RR)) 5912 return; 5913 5914 upstream = pci_upstream_bridge(pdev); 5915 if (!upstream) 5916 return; 5917 5918 pci_read_config_word(upstream, PI7C9X2Gxxx_MODE_REG, &val); 5919 if (!(val & PI7C9X2Gxxx_STORE_FORWARD_MODE)) { 5920 pci_info(upstream, "Setting PI7C9X2Gxxx store-forward mode to avoid ACS erratum\n"); 5921 pci_write_config_word(upstream, PI7C9X2Gxxx_MODE_REG, val | 5922 PI7C9X2Gxxx_STORE_FORWARD_MODE); 5923 } 5924 } 5925 /* 5926 * Apply fixup on enable and on resume, in order to apply the fix up whenever 5927 * ACS configuration changes or switch mode is reset 5928 */ 5929 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2404, 5930 pci_fixup_pericom_acs_store_forward); 5931 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2404, 5932 pci_fixup_pericom_acs_store_forward); 5933 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2304, 5934 pci_fixup_pericom_acs_store_forward); 5935 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2304, 5936 pci_fixup_pericom_acs_store_forward); 5937 DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303, 5938 pci_fixup_pericom_acs_store_forward); 5939 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303, 5940 pci_fixup_pericom_acs_store_forward); 5941 5942 static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) 5943 { 5944 pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING; 5945 } 5946 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup); 5947 5948 static void rom_bar_overlap_defect(struct pci_dev *dev) 5949 { 5950 pci_info(dev, "working around ROM BAR overlap defect\n"); 5951 dev->rom_bar_overlap = 1; 5952 } 5953 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect); 5954 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect); 5955 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect); 5956 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect); 5957 5958 #ifdef CONFIG_PCIEASPM 5959 /* 5960 * Several Intel DG2 graphics devices advertise that they can only tolerate 5961 * 1us latency when transitioning from L1 to L0, which may prevent ASPM L1 5962 * from being enabled. But in fact these devices can tolerate unlimited 5963 * latency. Override their Device Capabilities value to allow ASPM L1 to 5964 * be enabled. 5965 */ 5966 static void aspm_l1_acceptable_latency(struct pci_dev *dev) 5967 { 5968 u32 l1_lat = FIELD_GET(PCI_EXP_DEVCAP_L1, dev->devcap); 5969 5970 if (l1_lat < 7) { 5971 dev->devcap |= FIELD_PREP(PCI_EXP_DEVCAP_L1, 7); 5972 pci_info(dev, "ASPM: overriding L1 acceptable latency from %#x to 0x7\n", 5973 l1_lat); 5974 } 5975 } 5976 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f80, aspm_l1_acceptable_latency); 5977 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f81, aspm_l1_acceptable_latency); 5978 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f82, aspm_l1_acceptable_latency); 5979 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f83, aspm_l1_acceptable_latency); 5980 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f84, aspm_l1_acceptable_latency); 5981 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f85, aspm_l1_acceptable_latency); 5982 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f86, aspm_l1_acceptable_latency); 5983 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f87, aspm_l1_acceptable_latency); 5984 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f88, aspm_l1_acceptable_latency); 5985 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5690, aspm_l1_acceptable_latency); 5986 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5691, aspm_l1_acceptable_latency); 5987 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5692, aspm_l1_acceptable_latency); 5988 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5693, aspm_l1_acceptable_latency); 5989 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5694, aspm_l1_acceptable_latency); 5990 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5695, aspm_l1_acceptable_latency); 5991 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a0, aspm_l1_acceptable_latency); 5992 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a1, aspm_l1_acceptable_latency); 5993 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a2, aspm_l1_acceptable_latency); 5994 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a3, aspm_l1_acceptable_latency); 5995 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a4, aspm_l1_acceptable_latency); 5996 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a5, aspm_l1_acceptable_latency); 5997 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a6, aspm_l1_acceptable_latency); 5998 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b0, aspm_l1_acceptable_latency); 5999 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b1, aspm_l1_acceptable_latency); 6000 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c0, aspm_l1_acceptable_latency); 6001 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency); 6002 #endif 6003 6004 #ifdef CONFIG_PCIE_DPC 6005 /* 6006 * Intel Tiger Lake and Alder Lake BIOS has a bug that clears the DPC 6007 * RP PIO Log Size of the integrated Thunderbolt PCIe Root Ports. 6008 */ 6009 static void dpc_log_size(struct pci_dev *dev) 6010 { 6011 u16 dpc, val; 6012 6013 dpc = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC); 6014 if (!dpc) 6015 return; 6016 6017 pci_read_config_word(dev, dpc + PCI_EXP_DPC_CAP, &val); 6018 if (!(val & PCI_EXP_DPC_CAP_RP_EXT)) 6019 return; 6020 6021 if (!((val & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8)) { 6022 pci_info(dev, "Overriding RP PIO Log Size to 4\n"); 6023 dev->dpc_rp_log_size = 4; 6024 } 6025 } 6026 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x461f, dpc_log_size); 6027 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x462f, dpc_log_size); 6028 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x463f, dpc_log_size); 6029 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x466e, dpc_log_size); 6030 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a23, dpc_log_size); 6031 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a25, dpc_log_size); 6032 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a27, dpc_log_size); 6033 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a29, dpc_log_size); 6034 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size); 6035 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size); 6036 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size); 6037 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size); 6038 #endif 6039