1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef _LINUX_PCI_H_ 32 #define _LINUX_PCI_H_ 33 34 #define CONFIG_PCI_MSI 35 36 #include <linux/types.h> 37 38 #include <sys/param.h> 39 #include <sys/bus.h> 40 #include <sys/pciio.h> 41 #include <sys/rman.h> 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pci_private.h> 45 46 #include <machine/resource.h> 47 48 #include <linux/list.h> 49 #include <linux/dmapool.h> 50 #include <linux/dma-mapping.h> 51 #include <linux/compiler.h> 52 #include <linux/errno.h> 53 #include <asm/atomic.h> 54 #include <linux/device.h> 55 56 struct pci_device_id { 57 uint32_t vendor; 58 uint32_t device; 59 uint32_t subvendor; 60 uint32_t subdevice; 61 uint32_t class; 62 uint32_t class_mask; 63 uintptr_t driver_data; 64 }; 65 66 #define MODULE_DEVICE_TABLE(bus, table) 67 68 #define PCI_BASE_CLASS_DISPLAY 0x03 69 #define PCI_CLASS_DISPLAY_VGA 0x0300 70 #define PCI_CLASS_DISPLAY_OTHER 0x0380 71 #define PCI_BASE_CLASS_BRIDGE 0x06 72 #define PCI_CLASS_BRIDGE_ISA 0x0601 73 74 #define PCI_ANY_ID -1U 75 #define PCI_VENDOR_ID_APPLE 0x106b 76 #define PCI_VENDOR_ID_ASUSTEK 0x1043 77 #define PCI_VENDOR_ID_ATI 0x1002 78 #define PCI_VENDOR_ID_DELL 0x1028 79 #define PCI_VENDOR_ID_HP 0x103c 80 #define PCI_VENDOR_ID_IBM 0x1014 81 #define PCI_VENDOR_ID_INTEL 0x8086 82 #define PCI_VENDOR_ID_MELLANOX 0x15b3 83 #define PCI_VENDOR_ID_REDHAT_QUMRANET 0x1af4 84 #define PCI_VENDOR_ID_SERVERWORKS 0x1166 85 #define PCI_VENDOR_ID_SONY 0x104d 86 #define PCI_VENDOR_ID_TOPSPIN 0x1867 87 #define PCI_VENDOR_ID_VIA 0x1106 88 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4 89 #define PCI_DEVICE_ID_ATI_RADEON_QY 0x5159 90 #define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44 91 #define PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE 0x5a46 92 #define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278 93 #define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282 94 #define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c 95 #define PCI_DEVICE_ID_MELLANOX_SINAI 0x6274 96 #define PCI_SUBDEVICE_ID_QEMU 0x1100 97 98 #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 99 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 100 #define PCI_FUNC(devfn) ((devfn) & 0x07) 101 #define PCI_BUS_NUM(devfn) (((devfn) >> 8) & 0xff) 102 103 #define PCI_VDEVICE(_vendor, _device) \ 104 .vendor = PCI_VENDOR_ID_##_vendor, .device = (_device), \ 105 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 106 #define PCI_DEVICE(_vendor, _device) \ 107 .vendor = (_vendor), .device = (_device), \ 108 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 109 110 #define to_pci_dev(n) container_of(n, struct pci_dev, dev) 111 112 #define PCI_VENDOR_ID PCIR_DEVVENDOR 113 #define PCI_COMMAND PCIR_COMMAND 114 #define PCI_EXP_DEVCTL PCIER_DEVICE_CTL /* Device Control */ 115 #define PCI_EXP_LNKCTL PCIER_LINK_CTL /* Link Control */ 116 #define PCI_EXP_FLAGS_TYPE PCIEM_FLAGS_TYPE /* Device/Port type */ 117 #define PCI_EXP_DEVCAP PCIER_DEVICE_CAP /* Device capabilities */ 118 #define PCI_EXP_DEVSTA PCIER_DEVICE_STA /* Device Status */ 119 #define PCI_EXP_LNKCAP PCIER_LINK_CAP /* Link Capabilities */ 120 #define PCI_EXP_LNKSTA PCIER_LINK_STA /* Link Status */ 121 #define PCI_EXP_SLTCAP PCIER_SLOT_CAP /* Slot Capabilities */ 122 #define PCI_EXP_SLTCTL PCIER_SLOT_CTL /* Slot Control */ 123 #define PCI_EXP_SLTSTA PCIER_SLOT_STA /* Slot Status */ 124 #define PCI_EXP_RTCTL PCIER_ROOT_CTL /* Root Control */ 125 #define PCI_EXP_RTCAP PCIER_ROOT_CAP /* Root Capabilities */ 126 #define PCI_EXP_RTSTA PCIER_ROOT_STA /* Root Status */ 127 #define PCI_EXP_DEVCAP2 PCIER_DEVICE_CAP2 /* Device Capabilities 2 */ 128 #define PCI_EXP_DEVCTL2 PCIER_DEVICE_CTL2 /* Device Control 2 */ 129 #define PCI_EXP_LNKCAP2 PCIER_LINK_CAP2 /* Link Capabilities 2 */ 130 #define PCI_EXP_LNKCTL2 PCIER_LINK_CTL2 /* Link Control 2 */ 131 #define PCI_EXP_LNKSTA2 PCIER_LINK_STA2 /* Link Status 2 */ 132 #define PCI_EXP_FLAGS PCIER_FLAGS /* Capabilities register */ 133 #define PCI_EXP_FLAGS_VERS PCIEM_FLAGS_VERSION /* Capability version */ 134 #define PCI_EXP_TYPE_ROOT_PORT PCIEM_TYPE_ROOT_PORT /* Root Port */ 135 #define PCI_EXP_TYPE_ENDPOINT PCIEM_TYPE_ENDPOINT /* Express Endpoint */ 136 #define PCI_EXP_TYPE_LEG_END PCIEM_TYPE_LEGACY_ENDPOINT /* Legacy Endpoint */ 137 #define PCI_EXP_TYPE_DOWNSTREAM PCIEM_TYPE_DOWNSTREAM_PORT /* Downstream Port */ 138 #define PCI_EXP_FLAGS_SLOT PCIEM_FLAGS_SLOT /* Slot implemented */ 139 #define PCI_EXP_TYPE_RC_EC PCIEM_TYPE_ROOT_EC /* Root Complex Event Collector */ 140 #define PCI_EXP_LNKCAP_SLS_2_5GB 0x01 /* Supported Link Speed 2.5GT/s */ 141 #define PCI_EXP_LNKCAP_SLS_5_0GB 0x02 /* Supported Link Speed 5.0GT/s */ 142 #define PCI_EXP_LNKCAP_SLS_8_0GB 0x04 /* Supported Link Speed 8.0GT/s */ 143 #define PCI_EXP_LNKCAP_SLS_16_0GB 0x08 /* Supported Link Speed 16.0GT/s */ 144 #define PCI_EXP_LNKCAP_MLW 0x03f0 /* Maximum Link Width */ 145 #define PCI_EXP_LNKCAP2_SLS_2_5GB 0x02 /* Supported Link Speed 2.5GT/s */ 146 #define PCI_EXP_LNKCAP2_SLS_5_0GB 0x04 /* Supported Link Speed 5.0GT/s */ 147 #define PCI_EXP_LNKCAP2_SLS_8_0GB 0x08 /* Supported Link Speed 8.0GT/s */ 148 #define PCI_EXP_LNKCAP2_SLS_16_0GB 0x10 /* Supported Link Speed 16.0GT/s */ 149 150 #define PCI_EXP_LNKCTL_HAWD PCIEM_LINK_CTL_HAWD 151 #define PCI_EXP_LNKCAP_CLKPM 0x00040000 152 #define PCI_EXP_DEVSTA_TRPND 0x0020 153 154 #define IORESOURCE_MEM (1 << SYS_RES_MEMORY) 155 #define IORESOURCE_IO (1 << SYS_RES_IOPORT) 156 #define IORESOURCE_IRQ (1 << SYS_RES_IRQ) 157 158 enum pci_bus_speed { 159 PCI_SPEED_UNKNOWN = -1, 160 PCIE_SPEED_2_5GT, 161 PCIE_SPEED_5_0GT, 162 PCIE_SPEED_8_0GT, 163 PCIE_SPEED_16_0GT, 164 }; 165 166 enum pcie_link_width { 167 PCIE_LNK_WIDTH_RESRV = 0x00, 168 PCIE_LNK_X1 = 0x01, 169 PCIE_LNK_X2 = 0x02, 170 PCIE_LNK_X4 = 0x04, 171 PCIE_LNK_X8 = 0x08, 172 PCIE_LNK_X12 = 0x0c, 173 PCIE_LNK_X16 = 0x10, 174 PCIE_LNK_X32 = 0x20, 175 PCIE_LNK_WIDTH_UNKNOWN = 0xff, 176 }; 177 178 typedef int pci_power_t; 179 180 #define PCI_D0 PCI_POWERSTATE_D0 181 #define PCI_D1 PCI_POWERSTATE_D1 182 #define PCI_D2 PCI_POWERSTATE_D2 183 #define PCI_D3hot PCI_POWERSTATE_D3 184 #define PCI_D3cold 4 185 186 #define PCI_POWER_ERROR PCI_POWERSTATE_UNKNOWN 187 188 struct pci_dev; 189 190 struct pci_driver { 191 struct list_head links; 192 char *name; 193 const struct pci_device_id *id_table; 194 int (*probe)(struct pci_dev *dev, const struct pci_device_id *id); 195 void (*remove)(struct pci_dev *dev); 196 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ 197 int (*resume) (struct pci_dev *dev); /* Device woken up */ 198 void (*shutdown) (struct pci_dev *dev); /* Device shutdown */ 199 driver_t bsddriver; 200 devclass_t bsdclass; 201 struct device_driver driver; 202 const struct pci_error_handlers *err_handler; 203 bool isdrm; 204 }; 205 206 struct pci_bus { 207 struct pci_dev *self; 208 int domain; 209 int number; 210 }; 211 212 extern struct list_head pci_drivers; 213 extern struct list_head pci_devices; 214 extern spinlock_t pci_lock; 215 216 #define __devexit_p(x) x 217 218 struct pci_dev { 219 struct device dev; 220 struct list_head links; 221 struct pci_driver *pdrv; 222 struct pci_bus *bus; 223 uint16_t device; 224 uint16_t vendor; 225 uint16_t subsystem_vendor; 226 uint16_t subsystem_device; 227 unsigned int irq; 228 unsigned int devfn; 229 uint32_t class; 230 uint8_t revision; 231 bool msi_enabled; 232 }; 233 234 static inline struct resource_list_entry * 235 linux_pci_get_rle(struct pci_dev *pdev, int type, int rid) 236 { 237 struct pci_devinfo *dinfo; 238 struct resource_list *rl; 239 240 dinfo = device_get_ivars(pdev->dev.bsddev); 241 rl = &dinfo->resources; 242 return resource_list_find(rl, type, rid); 243 } 244 245 static inline struct resource_list_entry * 246 linux_pci_get_bar(struct pci_dev *pdev, int bar) 247 { 248 struct resource_list_entry *rle; 249 250 bar = PCIR_BAR(bar); 251 if ((rle = linux_pci_get_rle(pdev, SYS_RES_MEMORY, bar)) == NULL) 252 rle = linux_pci_get_rle(pdev, SYS_RES_IOPORT, bar); 253 return (rle); 254 } 255 256 static inline struct device * 257 linux_pci_find_irq_dev(unsigned int irq) 258 { 259 struct pci_dev *pdev; 260 struct device *found; 261 262 found = NULL; 263 spin_lock(&pci_lock); 264 list_for_each_entry(pdev, &pci_devices, links) { 265 if (irq == pdev->dev.irq || 266 (irq >= pdev->dev.irq_start && irq < pdev->dev.irq_end)) { 267 found = &pdev->dev; 268 break; 269 } 270 } 271 spin_unlock(&pci_lock); 272 return (found); 273 } 274 275 static inline int 276 pci_resource_type(struct pci_dev *pdev, int bar) 277 { 278 struct pci_map *pm; 279 280 pm = pci_find_bar(pdev->dev.bsddev, PCIR_BAR(bar)); 281 if (!pm) 282 return (-1); 283 284 if (PCI_BAR_IO(pm->pm_value)) 285 return (SYS_RES_IOPORT); 286 else 287 return (SYS_RES_MEMORY); 288 } 289 290 /* 291 * All drivers just seem to want to inspect the type not flags. 292 */ 293 static inline int 294 pci_resource_flags(struct pci_dev *pdev, int bar) 295 { 296 int type; 297 298 type = pci_resource_type(pdev, bar); 299 if (type < 0) 300 return (0); 301 return (1 << type); 302 } 303 304 static inline const char * 305 pci_name(struct pci_dev *d) 306 { 307 308 return device_get_desc(d->dev.bsddev); 309 } 310 311 static inline void * 312 pci_get_drvdata(struct pci_dev *pdev) 313 { 314 315 return dev_get_drvdata(&pdev->dev); 316 } 317 318 static inline void 319 pci_set_drvdata(struct pci_dev *pdev, void *data) 320 { 321 322 dev_set_drvdata(&pdev->dev, data); 323 } 324 325 static inline int 326 pci_enable_device(struct pci_dev *pdev) 327 { 328 329 pci_enable_io(pdev->dev.bsddev, SYS_RES_IOPORT); 330 pci_enable_io(pdev->dev.bsddev, SYS_RES_MEMORY); 331 return (0); 332 } 333 334 static inline void 335 pci_disable_device(struct pci_dev *pdev) 336 { 337 338 pci_disable_busmaster(pdev->dev.bsddev); 339 } 340 341 static inline int 342 pci_set_master(struct pci_dev *pdev) 343 { 344 345 pci_enable_busmaster(pdev->dev.bsddev); 346 return (0); 347 } 348 349 static inline int 350 pci_set_power_state(struct pci_dev *pdev, int state) 351 { 352 353 pci_set_powerstate(pdev->dev.bsddev, state); 354 return (0); 355 } 356 357 static inline int 358 pci_clear_master(struct pci_dev *pdev) 359 { 360 361 pci_disable_busmaster(pdev->dev.bsddev); 362 return (0); 363 } 364 365 static inline int 366 pci_request_region(struct pci_dev *pdev, int bar, const char *res_name) 367 { 368 int rid; 369 int type; 370 371 type = pci_resource_type(pdev, bar); 372 if (type < 0) 373 return (-ENODEV); 374 rid = PCIR_BAR(bar); 375 if (bus_alloc_resource_any(pdev->dev.bsddev, type, &rid, 376 RF_ACTIVE) == NULL) 377 return (-EINVAL); 378 return (0); 379 } 380 381 static inline void 382 pci_release_region(struct pci_dev *pdev, int bar) 383 { 384 struct resource_list_entry *rle; 385 386 if ((rle = linux_pci_get_bar(pdev, bar)) == NULL) 387 return; 388 bus_release_resource(pdev->dev.bsddev, rle->type, rle->rid, rle->res); 389 } 390 391 static inline void 392 pci_release_regions(struct pci_dev *pdev) 393 { 394 int i; 395 396 for (i = 0; i <= PCIR_MAX_BAR_0; i++) 397 pci_release_region(pdev, i); 398 } 399 400 static inline int 401 pci_request_regions(struct pci_dev *pdev, const char *res_name) 402 { 403 int error; 404 int i; 405 406 for (i = 0; i <= PCIR_MAX_BAR_0; i++) { 407 error = pci_request_region(pdev, i, res_name); 408 if (error && error != -ENODEV) { 409 pci_release_regions(pdev); 410 return (error); 411 } 412 } 413 return (0); 414 } 415 416 static inline void 417 pci_disable_msix(struct pci_dev *pdev) 418 { 419 420 pci_release_msi(pdev->dev.bsddev); 421 422 /* 423 * The MSIX IRQ numbers associated with this PCI device are no 424 * longer valid and might be re-assigned. Make sure 425 * linux_pci_find_irq_dev() does no longer see them by 426 * resetting their references to zero: 427 */ 428 pdev->dev.irq_start = 0; 429 pdev->dev.irq_end = 0; 430 } 431 432 #define pci_disable_msi(pdev) \ 433 linux_pci_disable_msi(pdev) 434 435 static inline void 436 linux_pci_disable_msi(struct pci_dev *pdev) 437 { 438 439 pci_release_msi(pdev->dev.bsddev); 440 441 pdev->dev.irq_start = 0; 442 pdev->dev.irq_end = 0; 443 pdev->irq = pdev->dev.irq; 444 pdev->msi_enabled = false; 445 } 446 447 unsigned long pci_resource_start(struct pci_dev *pdev, int bar); 448 unsigned long pci_resource_len(struct pci_dev *pdev, int bar); 449 450 static inline bus_addr_t 451 pci_bus_address(struct pci_dev *pdev, int bar) 452 { 453 454 return (pci_resource_start(pdev, bar)); 455 } 456 457 #define PCI_CAP_ID_EXP PCIY_EXPRESS 458 #define PCI_CAP_ID_PCIX PCIY_PCIX 459 #define PCI_CAP_ID_AGP PCIY_AGP 460 #define PCI_CAP_ID_PM PCIY_PMG 461 462 #define PCI_EXP_DEVCTL PCIER_DEVICE_CTL 463 #define PCI_EXP_DEVCTL_PAYLOAD PCIEM_CTL_MAX_PAYLOAD 464 #define PCI_EXP_DEVCTL_READRQ PCIEM_CTL_MAX_READ_REQUEST 465 #define PCI_EXP_LNKCTL PCIER_LINK_CTL 466 #define PCI_EXP_LNKSTA PCIER_LINK_STA 467 468 static inline int 469 pci_find_capability(struct pci_dev *pdev, int capid) 470 { 471 int reg; 472 473 if (pci_find_cap(pdev->dev.bsddev, capid, ®)) 474 return (0); 475 return (reg); 476 } 477 478 static inline int pci_pcie_cap(struct pci_dev *dev) 479 { 480 return pci_find_capability(dev, PCI_CAP_ID_EXP); 481 } 482 483 484 static inline int 485 pci_read_config_byte(struct pci_dev *pdev, int where, u8 *val) 486 { 487 488 *val = (u8)pci_read_config(pdev->dev.bsddev, where, 1); 489 return (0); 490 } 491 492 static inline int 493 pci_read_config_word(struct pci_dev *pdev, int where, u16 *val) 494 { 495 496 *val = (u16)pci_read_config(pdev->dev.bsddev, where, 2); 497 return (0); 498 } 499 500 static inline int 501 pci_read_config_dword(struct pci_dev *pdev, int where, u32 *val) 502 { 503 504 *val = (u32)pci_read_config(pdev->dev.bsddev, where, 4); 505 return (0); 506 } 507 508 static inline int 509 pci_write_config_byte(struct pci_dev *pdev, int where, u8 val) 510 { 511 512 pci_write_config(pdev->dev.bsddev, where, val, 1); 513 return (0); 514 } 515 516 static inline int 517 pci_write_config_word(struct pci_dev *pdev, int where, u16 val) 518 { 519 520 pci_write_config(pdev->dev.bsddev, where, val, 2); 521 return (0); 522 } 523 524 static inline int 525 pci_write_config_dword(struct pci_dev *pdev, int where, u32 val) 526 { 527 528 pci_write_config(pdev->dev.bsddev, where, val, 4); 529 return (0); 530 } 531 532 int linux_pci_register_driver(struct pci_driver *pdrv); 533 int linux_pci_register_drm_driver(struct pci_driver *pdrv); 534 void linux_pci_unregister_driver(struct pci_driver *pdrv); 535 void linux_pci_unregister_drm_driver(struct pci_driver *pdrv); 536 537 #define pci_register_driver(pdrv) linux_pci_register_driver(pdrv) 538 #define pci_unregister_driver(pdrv) linux_pci_unregister_driver(pdrv) 539 540 struct msix_entry { 541 int entry; 542 int vector; 543 }; 544 545 /* 546 * Enable msix, positive errors indicate actual number of available 547 * vectors. Negative errors are failures. 548 * 549 * NB: define added to prevent this definition of pci_enable_msix from 550 * clashing with the native FreeBSD version. 551 */ 552 #define pci_enable_msix(...) \ 553 linux_pci_enable_msix(__VA_ARGS__) 554 555 static inline int 556 pci_enable_msix(struct pci_dev *pdev, struct msix_entry *entries, int nreq) 557 { 558 struct resource_list_entry *rle; 559 int error; 560 int avail; 561 int i; 562 563 avail = pci_msix_count(pdev->dev.bsddev); 564 if (avail < nreq) { 565 if (avail == 0) 566 return -EINVAL; 567 return avail; 568 } 569 avail = nreq; 570 if ((error = -pci_alloc_msix(pdev->dev.bsddev, &avail)) != 0) 571 return error; 572 /* 573 * Handle case where "pci_alloc_msix()" may allocate less 574 * interrupts than available and return with no error: 575 */ 576 if (avail < nreq) { 577 pci_release_msi(pdev->dev.bsddev); 578 return avail; 579 } 580 rle = linux_pci_get_rle(pdev, SYS_RES_IRQ, 1); 581 pdev->dev.irq_start = rle->start; 582 pdev->dev.irq_end = rle->start + avail; 583 for (i = 0; i < nreq; i++) 584 entries[i].vector = pdev->dev.irq_start + i; 585 return (0); 586 } 587 588 #define pci_enable_msix_range(...) \ 589 linux_pci_enable_msix_range(__VA_ARGS__) 590 591 static inline int 592 pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, 593 int minvec, int maxvec) 594 { 595 int nvec = maxvec; 596 int rc; 597 598 if (maxvec < minvec) 599 return (-ERANGE); 600 601 do { 602 rc = pci_enable_msix(dev, entries, nvec); 603 if (rc < 0) { 604 return (rc); 605 } else if (rc > 0) { 606 if (rc < minvec) 607 return (-ENOSPC); 608 nvec = rc; 609 } 610 } while (rc); 611 return (nvec); 612 } 613 614 #define pci_enable_msi(pdev) \ 615 linux_pci_enable_msi(pdev) 616 617 static inline int 618 pci_enable_msi(struct pci_dev *pdev) 619 { 620 struct resource_list_entry *rle; 621 int error; 622 int avail; 623 624 avail = pci_msi_count(pdev->dev.bsddev); 625 if (avail < 1) 626 return -EINVAL; 627 628 avail = 1; /* this function only enable one MSI IRQ */ 629 if ((error = -pci_alloc_msi(pdev->dev.bsddev, &avail)) != 0) 630 return error; 631 632 rle = linux_pci_get_rle(pdev, SYS_RES_IRQ, 1); 633 pdev->dev.irq_start = rle->start; 634 pdev->dev.irq_end = rle->start + avail; 635 pdev->irq = rle->start; 636 pdev->msi_enabled = true; 637 return (0); 638 } 639 640 static inline int 641 pci_channel_offline(struct pci_dev *pdev) 642 { 643 644 return (pci_get_vendor(pdev->dev.bsddev) == PCIV_INVALID); 645 } 646 647 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) 648 { 649 return -ENODEV; 650 } 651 static inline void pci_disable_sriov(struct pci_dev *dev) 652 { 653 } 654 655 #define DEFINE_PCI_DEVICE_TABLE(_table) \ 656 const struct pci_device_id _table[] __devinitdata 657 658 659 /* XXX This should not be necessary. */ 660 #define pcix_set_mmrbc(d, v) 0 661 #define pcix_get_max_mmrbc(d) 0 662 #define pcie_set_readrq(d, v) pci_set_max_read_req(&(d)->dev, (v)) 663 664 #define PCI_DMA_BIDIRECTIONAL 0 665 #define PCI_DMA_TODEVICE 1 666 #define PCI_DMA_FROMDEVICE 2 667 #define PCI_DMA_NONE 3 668 669 #define pci_pool dma_pool 670 #define pci_pool_destroy(...) dma_pool_destroy(__VA_ARGS__) 671 #define pci_pool_alloc(...) dma_pool_alloc(__VA_ARGS__) 672 #define pci_pool_free(...) dma_pool_free(__VA_ARGS__) 673 #define pci_pool_create(_name, _pdev, _size, _align, _alloc) \ 674 dma_pool_create(_name, &(_pdev)->dev, _size, _align, _alloc) 675 #define pci_free_consistent(_hwdev, _size, _vaddr, _dma_handle) \ 676 dma_free_coherent((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 677 _size, _vaddr, _dma_handle) 678 #define pci_map_sg(_hwdev, _sg, _nents, _dir) \ 679 dma_map_sg((_hwdev) == NULL ? NULL : &(_hwdev->dev), \ 680 _sg, _nents, (enum dma_data_direction)_dir) 681 #define pci_map_single(_hwdev, _ptr, _size, _dir) \ 682 dma_map_single((_hwdev) == NULL ? NULL : &(_hwdev->dev), \ 683 (_ptr), (_size), (enum dma_data_direction)_dir) 684 #define pci_unmap_single(_hwdev, _addr, _size, _dir) \ 685 dma_unmap_single((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 686 _addr, _size, (enum dma_data_direction)_dir) 687 #define pci_unmap_sg(_hwdev, _sg, _nents, _dir) \ 688 dma_unmap_sg((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 689 _sg, _nents, (enum dma_data_direction)_dir) 690 #define pci_map_page(_hwdev, _page, _offset, _size, _dir) \ 691 dma_map_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, _page,\ 692 _offset, _size, (enum dma_data_direction)_dir) 693 #define pci_unmap_page(_hwdev, _dma_address, _size, _dir) \ 694 dma_unmap_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 695 _dma_address, _size, (enum dma_data_direction)_dir) 696 #define pci_set_dma_mask(_pdev, mask) dma_set_mask(&(_pdev)->dev, (mask)) 697 #define pci_dma_mapping_error(_pdev, _dma_addr) \ 698 dma_mapping_error(&(_pdev)->dev, _dma_addr) 699 #define pci_set_consistent_dma_mask(_pdev, _mask) \ 700 dma_set_coherent_mask(&(_pdev)->dev, (_mask)) 701 #define DECLARE_PCI_UNMAP_ADDR(x) DEFINE_DMA_UNMAP_ADDR(x); 702 #define DECLARE_PCI_UNMAP_LEN(x) DEFINE_DMA_UNMAP_LEN(x); 703 #define pci_unmap_addr dma_unmap_addr 704 #define pci_unmap_addr_set dma_unmap_addr_set 705 #define pci_unmap_len dma_unmap_len 706 #define pci_unmap_len_set dma_unmap_len_set 707 708 typedef unsigned int __bitwise pci_channel_state_t; 709 typedef unsigned int __bitwise pci_ers_result_t; 710 711 enum pci_channel_state { 712 pci_channel_io_normal = 1, 713 pci_channel_io_frozen = 2, 714 pci_channel_io_perm_failure = 3, 715 }; 716 717 enum pci_ers_result { 718 PCI_ERS_RESULT_NONE = 1, 719 PCI_ERS_RESULT_CAN_RECOVER = 2, 720 PCI_ERS_RESULT_NEED_RESET = 3, 721 PCI_ERS_RESULT_DISCONNECT = 4, 722 PCI_ERS_RESULT_RECOVERED = 5, 723 }; 724 725 726 /* PCI bus error event callbacks */ 727 struct pci_error_handlers { 728 pci_ers_result_t (*error_detected)(struct pci_dev *dev, 729 enum pci_channel_state error); 730 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); 731 pci_ers_result_t (*link_reset)(struct pci_dev *dev); 732 pci_ers_result_t (*slot_reset)(struct pci_dev *dev); 733 void (*resume)(struct pci_dev *dev); 734 }; 735 736 /* FreeBSD does not support SRIOV - yet */ 737 static inline struct pci_dev *pci_physfn(struct pci_dev *dev) 738 { 739 return dev; 740 } 741 742 static inline bool pci_is_pcie(struct pci_dev *dev) 743 { 744 return !!pci_pcie_cap(dev); 745 } 746 747 static inline u16 pcie_flags_reg(struct pci_dev *dev) 748 { 749 int pos; 750 u16 reg16; 751 752 pos = pci_find_capability(dev, PCI_CAP_ID_EXP); 753 if (!pos) 754 return 0; 755 756 pci_read_config_word(dev, pos + PCI_EXP_FLAGS, ®16); 757 758 return reg16; 759 } 760 761 762 static inline int pci_pcie_type(struct pci_dev *dev) 763 { 764 return (pcie_flags_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; 765 } 766 767 static inline int pcie_cap_version(struct pci_dev *dev) 768 { 769 return pcie_flags_reg(dev) & PCI_EXP_FLAGS_VERS; 770 } 771 772 static inline bool pcie_cap_has_lnkctl(struct pci_dev *dev) 773 { 774 int type = pci_pcie_type(dev); 775 776 return pcie_cap_version(dev) > 1 || 777 type == PCI_EXP_TYPE_ROOT_PORT || 778 type == PCI_EXP_TYPE_ENDPOINT || 779 type == PCI_EXP_TYPE_LEG_END; 780 } 781 782 static inline bool pcie_cap_has_devctl(const struct pci_dev *dev) 783 { 784 return true; 785 } 786 787 static inline bool pcie_cap_has_sltctl(struct pci_dev *dev) 788 { 789 int type = pci_pcie_type(dev); 790 791 return pcie_cap_version(dev) > 1 || type == PCI_EXP_TYPE_ROOT_PORT || 792 (type == PCI_EXP_TYPE_DOWNSTREAM && 793 pcie_flags_reg(dev) & PCI_EXP_FLAGS_SLOT); 794 } 795 796 static inline bool pcie_cap_has_rtctl(struct pci_dev *dev) 797 { 798 int type = pci_pcie_type(dev); 799 800 return pcie_cap_version(dev) > 1 || type == PCI_EXP_TYPE_ROOT_PORT || 801 type == PCI_EXP_TYPE_RC_EC; 802 } 803 804 static bool pcie_capability_reg_implemented(struct pci_dev *dev, int pos) 805 { 806 if (!pci_is_pcie(dev)) 807 return false; 808 809 switch (pos) { 810 case PCI_EXP_FLAGS_TYPE: 811 return true; 812 case PCI_EXP_DEVCAP: 813 case PCI_EXP_DEVCTL: 814 case PCI_EXP_DEVSTA: 815 return pcie_cap_has_devctl(dev); 816 case PCI_EXP_LNKCAP: 817 case PCI_EXP_LNKCTL: 818 case PCI_EXP_LNKSTA: 819 return pcie_cap_has_lnkctl(dev); 820 case PCI_EXP_SLTCAP: 821 case PCI_EXP_SLTCTL: 822 case PCI_EXP_SLTSTA: 823 return pcie_cap_has_sltctl(dev); 824 case PCI_EXP_RTCTL: 825 case PCI_EXP_RTCAP: 826 case PCI_EXP_RTSTA: 827 return pcie_cap_has_rtctl(dev); 828 case PCI_EXP_DEVCAP2: 829 case PCI_EXP_DEVCTL2: 830 case PCI_EXP_LNKCAP2: 831 case PCI_EXP_LNKCTL2: 832 case PCI_EXP_LNKSTA2: 833 return pcie_cap_version(dev) > 1; 834 default: 835 return false; 836 } 837 } 838 839 static inline int 840 pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *dst) 841 { 842 if (pos & 3) 843 return -EINVAL; 844 845 if (!pcie_capability_reg_implemented(dev, pos)) 846 return -EINVAL; 847 848 return pci_read_config_dword(dev, pci_pcie_cap(dev) + pos, dst); 849 } 850 851 static inline int 852 pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *dst) 853 { 854 if (pos & 3) 855 return -EINVAL; 856 857 if (!pcie_capability_reg_implemented(dev, pos)) 858 return -EINVAL; 859 860 return pci_read_config_word(dev, pci_pcie_cap(dev) + pos, dst); 861 } 862 863 static inline int 864 pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val) 865 { 866 if (pos & 1) 867 return -EINVAL; 868 869 if (!pcie_capability_reg_implemented(dev, pos)) 870 return 0; 871 872 return pci_write_config_word(dev, pci_pcie_cap(dev) + pos, val); 873 } 874 875 static inline int pcie_get_minimum_link(struct pci_dev *dev, 876 enum pci_bus_speed *speed, enum pcie_link_width *width) 877 { 878 *speed = PCI_SPEED_UNKNOWN; 879 *width = PCIE_LNK_WIDTH_UNKNOWN; 880 return (0); 881 } 882 883 static inline int 884 pci_num_vf(struct pci_dev *dev) 885 { 886 return (0); 887 } 888 889 static inline enum pci_bus_speed 890 pcie_get_speed_cap(struct pci_dev *dev) 891 { 892 device_t root; 893 uint32_t lnkcap, lnkcap2; 894 int error, pos; 895 896 root = device_get_parent(dev->dev.bsddev); 897 if (root == NULL) 898 return (PCI_SPEED_UNKNOWN); 899 root = device_get_parent(root); 900 if (root == NULL) 901 return (PCI_SPEED_UNKNOWN); 902 root = device_get_parent(root); 903 if (root == NULL) 904 return (PCI_SPEED_UNKNOWN); 905 906 if (pci_get_vendor(root) == PCI_VENDOR_ID_VIA || 907 pci_get_vendor(root) == PCI_VENDOR_ID_SERVERWORKS) 908 return (PCI_SPEED_UNKNOWN); 909 910 if ((error = pci_find_cap(root, PCIY_EXPRESS, &pos)) != 0) 911 return (PCI_SPEED_UNKNOWN); 912 913 lnkcap2 = pci_read_config(root, pos + PCIER_LINK_CAP2, 4); 914 915 if (lnkcap2) { /* PCIe r3.0-compliant */ 916 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB) 917 return (PCIE_SPEED_2_5GT); 918 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB) 919 return (PCIE_SPEED_5_0GT); 920 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB) 921 return (PCIE_SPEED_8_0GT); 922 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_16_0GB) 923 return (PCIE_SPEED_16_0GT); 924 } else { /* pre-r3.0 */ 925 lnkcap = pci_read_config(root, pos + PCIER_LINK_CAP, 4); 926 if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB) 927 return (PCIE_SPEED_2_5GT); 928 if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB) 929 return (PCIE_SPEED_5_0GT); 930 if (lnkcap & PCI_EXP_LNKCAP_SLS_8_0GB) 931 return (PCIE_SPEED_8_0GT); 932 if (lnkcap & PCI_EXP_LNKCAP_SLS_16_0GB) 933 return (PCIE_SPEED_16_0GT); 934 } 935 return (PCI_SPEED_UNKNOWN); 936 } 937 938 static inline enum pcie_link_width 939 pcie_get_width_cap(struct pci_dev *dev) 940 { 941 uint32_t lnkcap; 942 943 pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); 944 if (lnkcap) 945 return ((lnkcap & PCI_EXP_LNKCAP_MLW) >> 4); 946 947 return (PCIE_LNK_WIDTH_UNKNOWN); 948 } 949 950 #endif /* _LINUX_PCI_H_ */ 951