1 #ifndef QEMU_PCI_H 2 #define QEMU_PCI_H 3 4 #include "exec/memory.h" 5 #include "sysemu/dma.h" 6 7 /* PCI includes legacy ISA access. */ 8 #include "hw/isa/isa.h" 9 10 #include "hw/pci/pcie.h" 11 12 extern bool pci_available; 13 14 /* PCI bus */ 15 16 #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 17 #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) 18 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 19 #define PCI_FUNC(devfn) ((devfn) & 0x07) 20 #define PCI_BUILD_BDF(bus, devfn) ((bus << 8) | (devfn)) 21 #define PCI_BUS_MAX 256 22 #define PCI_DEVFN_MAX 256 23 #define PCI_SLOT_MAX 32 24 #define PCI_FUNC_MAX 8 25 26 /* Class, Vendor and Device IDs from Linux's pci_ids.h */ 27 #include "hw/pci/pci_ids.h" 28 29 /* QEMU-specific Vendor and Device ID definitions */ 30 31 /* IBM (0x1014) */ 32 #define PCI_DEVICE_ID_IBM_440GX 0x027f 33 #define PCI_DEVICE_ID_IBM_OPENPIC2 0xffff 34 35 /* Hitachi (0x1054) */ 36 #define PCI_VENDOR_ID_HITACHI 0x1054 37 #define PCI_DEVICE_ID_HITACHI_SH7751R 0x350e 38 39 /* Apple (0x106b) */ 40 #define PCI_DEVICE_ID_APPLE_343S1201 0x0010 41 #define PCI_DEVICE_ID_APPLE_UNI_N_I_PCI 0x001e 42 #define PCI_DEVICE_ID_APPLE_UNI_N_PCI 0x001f 43 #define PCI_DEVICE_ID_APPLE_UNI_N_KEYL 0x0022 44 #define PCI_DEVICE_ID_APPLE_IPID_USB 0x003f 45 46 /* Realtek (0x10ec) */ 47 #define PCI_DEVICE_ID_REALTEK_8029 0x8029 48 49 /* Xilinx (0x10ee) */ 50 #define PCI_DEVICE_ID_XILINX_XC2VP30 0x0300 51 52 /* Marvell (0x11ab) */ 53 #define PCI_DEVICE_ID_MARVELL_GT6412X 0x4620 54 55 /* QEMU/Bochs VGA (0x1234) */ 56 #define PCI_VENDOR_ID_QEMU 0x1234 57 #define PCI_DEVICE_ID_QEMU_VGA 0x1111 58 #define PCI_DEVICE_ID_QEMU_IPMI 0x1112 59 60 /* VMWare (0x15ad) */ 61 #define PCI_VENDOR_ID_VMWARE 0x15ad 62 #define PCI_DEVICE_ID_VMWARE_SVGA2 0x0405 63 #define PCI_DEVICE_ID_VMWARE_SVGA 0x0710 64 #define PCI_DEVICE_ID_VMWARE_NET 0x0720 65 #define PCI_DEVICE_ID_VMWARE_SCSI 0x0730 66 #define PCI_DEVICE_ID_VMWARE_PVSCSI 0x07C0 67 #define PCI_DEVICE_ID_VMWARE_IDE 0x1729 68 #define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0 69 70 /* Intel (0x8086) */ 71 #define PCI_DEVICE_ID_INTEL_82551IT 0x1209 72 #define PCI_DEVICE_ID_INTEL_82557 0x1229 73 #define PCI_DEVICE_ID_INTEL_82801IR 0x2922 74 75 /* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */ 76 #define PCI_VENDOR_ID_REDHAT_QUMRANET 0x1af4 77 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4 78 #define PCI_SUBDEVICE_ID_QEMU 0x1100 79 80 #define PCI_DEVICE_ID_VIRTIO_NET 0x1000 81 #define PCI_DEVICE_ID_VIRTIO_BLOCK 0x1001 82 #define PCI_DEVICE_ID_VIRTIO_BALLOON 0x1002 83 #define PCI_DEVICE_ID_VIRTIO_CONSOLE 0x1003 84 #define PCI_DEVICE_ID_VIRTIO_SCSI 0x1004 85 #define PCI_DEVICE_ID_VIRTIO_RNG 0x1005 86 #define PCI_DEVICE_ID_VIRTIO_9P 0x1009 87 #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012 88 #define PCI_DEVICE_ID_VIRTIO_PMEM 0x1013 89 90 #define PCI_VENDOR_ID_REDHAT 0x1b36 91 #define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001 92 #define PCI_DEVICE_ID_REDHAT_SERIAL 0x0002 93 #define PCI_DEVICE_ID_REDHAT_SERIAL2 0x0003 94 #define PCI_DEVICE_ID_REDHAT_SERIAL4 0x0004 95 #define PCI_DEVICE_ID_REDHAT_TEST 0x0005 96 #define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 97 #define PCI_DEVICE_ID_REDHAT_SDHCI 0x0007 98 #define PCI_DEVICE_ID_REDHAT_PCIE_HOST 0x0008 99 #define PCI_DEVICE_ID_REDHAT_PXB 0x0009 100 #define PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT 0x000a 101 #define PCI_DEVICE_ID_REDHAT_PXB_PCIE 0x000b 102 #define PCI_DEVICE_ID_REDHAT_PCIE_RP 0x000c 103 #define PCI_DEVICE_ID_REDHAT_XHCI 0x000d 104 #define PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE 0x000e 105 #define PCI_DEVICE_ID_REDHAT_MDPY 0x000f 106 #define PCI_DEVICE_ID_REDHAT_QXL 0x0100 107 108 #define FMT_PCIBUS PRIx64 109 110 typedef uint64_t pcibus_t; 111 112 struct PCIHostDeviceAddress { 113 unsigned int domain; 114 unsigned int bus; 115 unsigned int slot; 116 unsigned int function; 117 }; 118 119 typedef void PCIConfigWriteFunc(PCIDevice *pci_dev, 120 uint32_t address, uint32_t data, int len); 121 typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev, 122 uint32_t address, int len); 123 typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num, 124 pcibus_t addr, pcibus_t size, int type); 125 typedef void PCIUnregisterFunc(PCIDevice *pci_dev); 126 127 typedef struct PCIIORegion { 128 pcibus_t addr; /* current PCI mapping address. -1 means not mapped */ 129 #define PCI_BAR_UNMAPPED (~(pcibus_t)0) 130 pcibus_t size; 131 uint8_t type; 132 MemoryRegion *memory; 133 MemoryRegion *address_space; 134 } PCIIORegion; 135 136 #define PCI_ROM_SLOT 6 137 #define PCI_NUM_REGIONS 7 138 139 enum { 140 QEMU_PCI_VGA_MEM, 141 QEMU_PCI_VGA_IO_LO, 142 QEMU_PCI_VGA_IO_HI, 143 QEMU_PCI_VGA_NUM_REGIONS, 144 }; 145 146 #define QEMU_PCI_VGA_MEM_BASE 0xa0000 147 #define QEMU_PCI_VGA_MEM_SIZE 0x20000 148 #define QEMU_PCI_VGA_IO_LO_BASE 0x3b0 149 #define QEMU_PCI_VGA_IO_LO_SIZE 0xc 150 #define QEMU_PCI_VGA_IO_HI_BASE 0x3c0 151 #define QEMU_PCI_VGA_IO_HI_SIZE 0x20 152 153 #include "hw/pci/pci_regs.h" 154 155 /* PCI HEADER_TYPE */ 156 #define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80 157 158 /* Size of the standard PCI config header */ 159 #define PCI_CONFIG_HEADER_SIZE 0x40 160 /* Size of the standard PCI config space */ 161 #define PCI_CONFIG_SPACE_SIZE 0x100 162 /* Size of the standard PCIe config space: 4KB */ 163 #define PCIE_CONFIG_SPACE_SIZE 0x1000 164 165 #define PCI_NUM_PINS 4 /* A-D */ 166 167 /* Bits in cap_present field. */ 168 enum { 169 QEMU_PCI_CAP_MSI = 0x1, 170 QEMU_PCI_CAP_MSIX = 0x2, 171 QEMU_PCI_CAP_EXPRESS = 0x4, 172 173 /* multifunction capable device */ 174 #define QEMU_PCI_CAP_MULTIFUNCTION_BITNR 3 175 QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR), 176 177 /* command register SERR bit enabled - unused since QEMU v5.0 */ 178 #define QEMU_PCI_CAP_SERR_BITNR 4 179 QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR), 180 /* Standard hot plug controller. */ 181 #define QEMU_PCI_SHPC_BITNR 5 182 QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR), 183 #define QEMU_PCI_SLOTID_BITNR 6 184 QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR), 185 /* PCI Express capability - Power Controller Present */ 186 #define QEMU_PCIE_SLTCAP_PCP_BITNR 7 187 QEMU_PCIE_SLTCAP_PCP = (1 << QEMU_PCIE_SLTCAP_PCP_BITNR), 188 /* Link active status in endpoint capability is always set */ 189 #define QEMU_PCIE_LNKSTA_DLLLA_BITNR 8 190 QEMU_PCIE_LNKSTA_DLLLA = (1 << QEMU_PCIE_LNKSTA_DLLLA_BITNR), 191 #define QEMU_PCIE_EXTCAP_INIT_BITNR 9 192 QEMU_PCIE_EXTCAP_INIT = (1 << QEMU_PCIE_EXTCAP_INIT_BITNR), 193 }; 194 195 #define TYPE_PCI_DEVICE "pci-device" 196 #define PCI_DEVICE(obj) \ 197 OBJECT_CHECK(PCIDevice, (obj), TYPE_PCI_DEVICE) 198 #define PCI_DEVICE_CLASS(klass) \ 199 OBJECT_CLASS_CHECK(PCIDeviceClass, (klass), TYPE_PCI_DEVICE) 200 #define PCI_DEVICE_GET_CLASS(obj) \ 201 OBJECT_GET_CLASS(PCIDeviceClass, (obj), TYPE_PCI_DEVICE) 202 203 /* Implemented by devices that can be plugged on PCI Express buses */ 204 #define INTERFACE_PCIE_DEVICE "pci-express-device" 205 206 /* Implemented by devices that can be plugged on Conventional PCI buses */ 207 #define INTERFACE_CONVENTIONAL_PCI_DEVICE "conventional-pci-device" 208 209 typedef struct PCIINTxRoute { 210 enum { 211 PCI_INTX_ENABLED, 212 PCI_INTX_INVERTED, 213 PCI_INTX_DISABLED, 214 } mode; 215 int irq; 216 } PCIINTxRoute; 217 218 typedef struct PCIDeviceClass { 219 DeviceClass parent_class; 220 221 void (*realize)(PCIDevice *dev, Error **errp); 222 PCIUnregisterFunc *exit; 223 PCIConfigReadFunc *config_read; 224 PCIConfigWriteFunc *config_write; 225 226 uint16_t vendor_id; 227 uint16_t device_id; 228 uint8_t revision; 229 uint16_t class_id; 230 uint16_t subsystem_vendor_id; /* only for header type = 0 */ 231 uint16_t subsystem_id; /* only for header type = 0 */ 232 233 /* 234 * pci-to-pci bridge or normal device. 235 * This doesn't mean pci host switch. 236 * When card bus bridge is supported, this would be enhanced. 237 */ 238 bool is_bridge; 239 240 /* rom bar */ 241 const char *romfile; 242 } PCIDeviceClass; 243 244 typedef void (*PCIINTxRoutingNotifier)(PCIDevice *dev); 245 typedef int (*MSIVectorUseNotifier)(PCIDevice *dev, unsigned int vector, 246 MSIMessage msg); 247 typedef void (*MSIVectorReleaseNotifier)(PCIDevice *dev, unsigned int vector); 248 typedef void (*MSIVectorPollNotifier)(PCIDevice *dev, 249 unsigned int vector_start, 250 unsigned int vector_end); 251 252 enum PCIReqIDType { 253 PCI_REQ_ID_INVALID = 0, 254 PCI_REQ_ID_BDF, 255 PCI_REQ_ID_SECONDARY_BUS, 256 PCI_REQ_ID_MAX, 257 }; 258 typedef enum PCIReqIDType PCIReqIDType; 259 260 struct PCIReqIDCache { 261 PCIDevice *dev; 262 PCIReqIDType type; 263 }; 264 typedef struct PCIReqIDCache PCIReqIDCache; 265 266 struct PCIDevice { 267 DeviceState qdev; 268 bool partially_hotplugged; 269 270 /* PCI config space */ 271 uint8_t *config; 272 273 /* Used to enable config checks on load. Note that writable bits are 274 * never checked even if set in cmask. */ 275 uint8_t *cmask; 276 277 /* Used to implement R/W bytes */ 278 uint8_t *wmask; 279 280 /* Used to implement RW1C(Write 1 to Clear) bytes */ 281 uint8_t *w1cmask; 282 283 /* Used to allocate config space for capabilities. */ 284 uint8_t *used; 285 286 /* the following fields are read only */ 287 int32_t devfn; 288 /* Cached device to fetch requester ID from, to avoid the PCI 289 * tree walking every time we invoke PCI request (e.g., 290 * MSI). For conventional PCI root complex, this field is 291 * meaningless. */ 292 PCIReqIDCache requester_id_cache; 293 char name[64]; 294 PCIIORegion io_regions[PCI_NUM_REGIONS]; 295 AddressSpace bus_master_as; 296 MemoryRegion bus_master_container_region; 297 MemoryRegion bus_master_enable_region; 298 299 /* do not access the following fields */ 300 PCIConfigReadFunc *config_read; 301 PCIConfigWriteFunc *config_write; 302 303 /* Legacy PCI VGA regions */ 304 MemoryRegion *vga_regions[QEMU_PCI_VGA_NUM_REGIONS]; 305 bool has_vga; 306 307 /* Current IRQ levels. Used internally by the generic PCI code. */ 308 uint8_t irq_state; 309 310 /* Capability bits */ 311 uint32_t cap_present; 312 313 /* Offset of MSI-X capability in config space */ 314 uint8_t msix_cap; 315 316 /* MSI-X entries */ 317 int msix_entries_nr; 318 319 /* Space to store MSIX table & pending bit array */ 320 uint8_t *msix_table; 321 uint8_t *msix_pba; 322 /* MemoryRegion container for msix exclusive BAR setup */ 323 MemoryRegion msix_exclusive_bar; 324 /* Memory Regions for MSIX table and pending bit entries. */ 325 MemoryRegion msix_table_mmio; 326 MemoryRegion msix_pba_mmio; 327 /* Reference-count for entries actually in use by driver. */ 328 unsigned *msix_entry_used; 329 /* MSIX function mask set or MSIX disabled */ 330 bool msix_function_masked; 331 /* Version id needed for VMState */ 332 int32_t version_id; 333 334 /* Offset of MSI capability in config space */ 335 uint8_t msi_cap; 336 337 /* PCI Express */ 338 PCIExpressDevice exp; 339 340 /* SHPC */ 341 SHPCDevice *shpc; 342 343 /* Location of option rom */ 344 char *romfile; 345 bool has_rom; 346 MemoryRegion rom; 347 uint32_t rom_bar; 348 349 /* INTx routing notifier */ 350 PCIINTxRoutingNotifier intx_routing_notifier; 351 352 /* MSI-X notifiers */ 353 MSIVectorUseNotifier msix_vector_use_notifier; 354 MSIVectorReleaseNotifier msix_vector_release_notifier; 355 MSIVectorPollNotifier msix_vector_poll_notifier; 356 357 /* ID of standby device in net_failover pair */ 358 char *failover_pair_id; 359 }; 360 361 void pci_register_bar(PCIDevice *pci_dev, int region_num, 362 uint8_t attr, MemoryRegion *memory); 363 void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, 364 MemoryRegion *io_lo, MemoryRegion *io_hi); 365 void pci_unregister_vga(PCIDevice *pci_dev); 366 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num); 367 368 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, 369 uint8_t offset, uint8_t size, 370 Error **errp); 371 372 void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size); 373 374 uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id); 375 376 377 uint32_t pci_default_read_config(PCIDevice *d, 378 uint32_t address, int len); 379 void pci_default_write_config(PCIDevice *d, 380 uint32_t address, uint32_t val, int len); 381 void pci_device_save(PCIDevice *s, QEMUFile *f); 382 int pci_device_load(PCIDevice *s, QEMUFile *f); 383 MemoryRegion *pci_address_space(PCIDevice *dev); 384 MemoryRegion *pci_address_space_io(PCIDevice *dev); 385 386 /* 387 * Should not normally be used by devices. For use by sPAPR target 388 * where QEMU emulates firmware. 389 */ 390 int pci_bar(PCIDevice *d, int reg); 391 392 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level); 393 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num); 394 typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); 395 396 #define TYPE_PCI_BUS "PCI" 397 #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) 398 #define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) 399 #define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) 400 #define TYPE_PCIE_BUS "PCIE" 401 402 bool pci_bus_is_express(PCIBus *bus); 403 404 void pci_root_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, 405 const char *name, 406 MemoryRegion *address_space_mem, 407 MemoryRegion *address_space_io, 408 uint8_t devfn_min, const char *typename); 409 PCIBus *pci_root_bus_new(DeviceState *parent, const char *name, 410 MemoryRegion *address_space_mem, 411 MemoryRegion *address_space_io, 412 uint8_t devfn_min, const char *typename); 413 void pci_root_bus_cleanup(PCIBus *bus); 414 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 415 void *irq_opaque, int nirq); 416 void pci_bus_irqs_cleanup(PCIBus *bus); 417 int pci_bus_get_irq_level(PCIBus *bus, int irq_num); 418 /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ 419 static inline int pci_swizzle(int slot, int pin) 420 { 421 return (slot + pin) % PCI_NUM_PINS; 422 } 423 int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); 424 PCIBus *pci_register_root_bus(DeviceState *parent, const char *name, 425 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 426 void *irq_opaque, 427 MemoryRegion *address_space_mem, 428 MemoryRegion *address_space_io, 429 uint8_t devfn_min, int nirq, 430 const char *typename); 431 void pci_unregister_root_bus(PCIBus *bus); 432 void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn); 433 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin); 434 bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new); 435 void pci_bus_fire_intx_routing_notifier(PCIBus *bus); 436 void pci_device_set_intx_routing_notifier(PCIDevice *dev, 437 PCIINTxRoutingNotifier notifier); 438 void pci_device_reset(PCIDevice *dev); 439 440 PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, 441 const char *default_model, 442 const char *default_devaddr); 443 444 PCIDevice *pci_vga_init(PCIBus *bus); 445 446 static inline PCIBus *pci_get_bus(const PCIDevice *dev) 447 { 448 return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); 449 } 450 int pci_bus_num(PCIBus *s); 451 static inline int pci_dev_bus_num(const PCIDevice *dev) 452 { 453 return pci_bus_num(pci_get_bus(dev)); 454 } 455 456 int pci_bus_numa_node(PCIBus *bus); 457 void pci_for_each_device(PCIBus *bus, int bus_num, 458 void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque), 459 void *opaque); 460 void pci_for_each_device_reverse(PCIBus *bus, int bus_num, 461 void (*fn)(PCIBus *bus, PCIDevice *d, 462 void *opaque), 463 void *opaque); 464 void pci_for_each_bus_depth_first(PCIBus *bus, 465 void *(*begin)(PCIBus *bus, void *parent_state), 466 void (*end)(PCIBus *bus, void *state), 467 void *parent_state); 468 PCIDevice *pci_get_function_0(PCIDevice *pci_dev); 469 470 /* Use this wrapper when specific scan order is not required. */ 471 static inline 472 void pci_for_each_bus(PCIBus *bus, 473 void (*fn)(PCIBus *bus, void *opaque), 474 void *opaque) 475 { 476 pci_for_each_bus_depth_first(bus, NULL, fn, opaque); 477 } 478 479 PCIBus *pci_device_root_bus(const PCIDevice *d); 480 const char *pci_root_bus_path(PCIDevice *dev); 481 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); 482 int pci_qdev_find_device(const char *id, PCIDevice **pdev); 483 void pci_bus_get_w64_range(PCIBus *bus, Range *range); 484 485 void pci_device_deassert_intx(PCIDevice *dev); 486 487 typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); 488 489 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); 490 void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); 491 492 static inline void 493 pci_set_byte(uint8_t *config, uint8_t val) 494 { 495 *config = val; 496 } 497 498 static inline uint8_t 499 pci_get_byte(const uint8_t *config) 500 { 501 return *config; 502 } 503 504 static inline void 505 pci_set_word(uint8_t *config, uint16_t val) 506 { 507 stw_le_p(config, val); 508 } 509 510 static inline uint16_t 511 pci_get_word(const uint8_t *config) 512 { 513 return lduw_le_p(config); 514 } 515 516 static inline void 517 pci_set_long(uint8_t *config, uint32_t val) 518 { 519 stl_le_p(config, val); 520 } 521 522 static inline uint32_t 523 pci_get_long(const uint8_t *config) 524 { 525 return ldl_le_p(config); 526 } 527 528 /* 529 * PCI capabilities and/or their fields 530 * are generally DWORD aligned only so 531 * mechanism used by pci_set/get_quad() 532 * must be tolerant to unaligned pointers 533 * 534 */ 535 static inline void 536 pci_set_quad(uint8_t *config, uint64_t val) 537 { 538 stq_le_p(config, val); 539 } 540 541 static inline uint64_t 542 pci_get_quad(const uint8_t *config) 543 { 544 return ldq_le_p(config); 545 } 546 547 static inline void 548 pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val) 549 { 550 pci_set_word(&pci_config[PCI_VENDOR_ID], val); 551 } 552 553 static inline void 554 pci_config_set_device_id(uint8_t *pci_config, uint16_t val) 555 { 556 pci_set_word(&pci_config[PCI_DEVICE_ID], val); 557 } 558 559 static inline void 560 pci_config_set_revision(uint8_t *pci_config, uint8_t val) 561 { 562 pci_set_byte(&pci_config[PCI_REVISION_ID], val); 563 } 564 565 static inline void 566 pci_config_set_class(uint8_t *pci_config, uint16_t val) 567 { 568 pci_set_word(&pci_config[PCI_CLASS_DEVICE], val); 569 } 570 571 static inline void 572 pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val) 573 { 574 pci_set_byte(&pci_config[PCI_CLASS_PROG], val); 575 } 576 577 static inline void 578 pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val) 579 { 580 pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val); 581 } 582 583 /* 584 * helper functions to do bit mask operation on configuration space. 585 * Just to set bit, use test-and-set and discard returned value. 586 * Just to clear bit, use test-and-clear and discard returned value. 587 * NOTE: They aren't atomic. 588 */ 589 static inline uint8_t 590 pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask) 591 { 592 uint8_t val = pci_get_byte(config); 593 pci_set_byte(config, val & ~mask); 594 return val & mask; 595 } 596 597 static inline uint8_t 598 pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask) 599 { 600 uint8_t val = pci_get_byte(config); 601 pci_set_byte(config, val | mask); 602 return val & mask; 603 } 604 605 static inline uint16_t 606 pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask) 607 { 608 uint16_t val = pci_get_word(config); 609 pci_set_word(config, val & ~mask); 610 return val & mask; 611 } 612 613 static inline uint16_t 614 pci_word_test_and_set_mask(uint8_t *config, uint16_t mask) 615 { 616 uint16_t val = pci_get_word(config); 617 pci_set_word(config, val | mask); 618 return val & mask; 619 } 620 621 static inline uint32_t 622 pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask) 623 { 624 uint32_t val = pci_get_long(config); 625 pci_set_long(config, val & ~mask); 626 return val & mask; 627 } 628 629 static inline uint32_t 630 pci_long_test_and_set_mask(uint8_t *config, uint32_t mask) 631 { 632 uint32_t val = pci_get_long(config); 633 pci_set_long(config, val | mask); 634 return val & mask; 635 } 636 637 static inline uint64_t 638 pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask) 639 { 640 uint64_t val = pci_get_quad(config); 641 pci_set_quad(config, val & ~mask); 642 return val & mask; 643 } 644 645 static inline uint64_t 646 pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask) 647 { 648 uint64_t val = pci_get_quad(config); 649 pci_set_quad(config, val | mask); 650 return val & mask; 651 } 652 653 /* Access a register specified by a mask */ 654 static inline void 655 pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg) 656 { 657 uint8_t val = pci_get_byte(config); 658 uint8_t rval = reg << ctz32(mask); 659 pci_set_byte(config, (~mask & val) | (mask & rval)); 660 } 661 662 static inline uint8_t 663 pci_get_byte_by_mask(uint8_t *config, uint8_t mask) 664 { 665 uint8_t val = pci_get_byte(config); 666 return (val & mask) >> ctz32(mask); 667 } 668 669 static inline void 670 pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg) 671 { 672 uint16_t val = pci_get_word(config); 673 uint16_t rval = reg << ctz32(mask); 674 pci_set_word(config, (~mask & val) | (mask & rval)); 675 } 676 677 static inline uint16_t 678 pci_get_word_by_mask(uint8_t *config, uint16_t mask) 679 { 680 uint16_t val = pci_get_word(config); 681 return (val & mask) >> ctz32(mask); 682 } 683 684 static inline void 685 pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg) 686 { 687 uint32_t val = pci_get_long(config); 688 uint32_t rval = reg << ctz32(mask); 689 pci_set_long(config, (~mask & val) | (mask & rval)); 690 } 691 692 static inline uint32_t 693 pci_get_long_by_mask(uint8_t *config, uint32_t mask) 694 { 695 uint32_t val = pci_get_long(config); 696 return (val & mask) >> ctz32(mask); 697 } 698 699 static inline void 700 pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg) 701 { 702 uint64_t val = pci_get_quad(config); 703 uint64_t rval = reg << ctz32(mask); 704 pci_set_quad(config, (~mask & val) | (mask & rval)); 705 } 706 707 static inline uint64_t 708 pci_get_quad_by_mask(uint8_t *config, uint64_t mask) 709 { 710 uint64_t val = pci_get_quad(config); 711 return (val & mask) >> ctz32(mask); 712 } 713 714 PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction, 715 const char *name); 716 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, 717 bool multifunction, 718 const char *name); 719 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name); 720 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name); 721 722 void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev); 723 724 qemu_irq pci_allocate_irq(PCIDevice *pci_dev); 725 void pci_set_irq(PCIDevice *pci_dev, int level); 726 727 static inline void pci_irq_assert(PCIDevice *pci_dev) 728 { 729 pci_set_irq(pci_dev, 1); 730 } 731 732 static inline void pci_irq_deassert(PCIDevice *pci_dev) 733 { 734 pci_set_irq(pci_dev, 0); 735 } 736 737 /* 738 * FIXME: PCI does not work this way. 739 * All the callers to this method should be fixed. 740 */ 741 static inline void pci_irq_pulse(PCIDevice *pci_dev) 742 { 743 pci_irq_assert(pci_dev); 744 pci_irq_deassert(pci_dev); 745 } 746 747 static inline int pci_is_express(const PCIDevice *d) 748 { 749 return d->cap_present & QEMU_PCI_CAP_EXPRESS; 750 } 751 752 static inline int pci_is_express_downstream_port(const PCIDevice *d) 753 { 754 uint8_t type; 755 756 if (!pci_is_express(d) || !d->exp.exp_cap) { 757 return 0; 758 } 759 760 type = pcie_cap_get_type(d); 761 762 return type == PCI_EXP_TYPE_DOWNSTREAM || type == PCI_EXP_TYPE_ROOT_PORT; 763 } 764 765 static inline uint32_t pci_config_size(const PCIDevice *d) 766 { 767 return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE; 768 } 769 770 static inline uint16_t pci_get_bdf(PCIDevice *dev) 771 { 772 return PCI_BUILD_BDF(pci_bus_num(pci_get_bus(dev)), dev->devfn); 773 } 774 775 uint16_t pci_requester_id(PCIDevice *dev); 776 777 /* DMA access functions */ 778 static inline AddressSpace *pci_get_address_space(PCIDevice *dev) 779 { 780 return &dev->bus_master_as; 781 } 782 783 static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr, 784 void *buf, dma_addr_t len, DMADirection dir) 785 { 786 dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); 787 return 0; 788 } 789 790 static inline int pci_dma_read(PCIDevice *dev, dma_addr_t addr, 791 void *buf, dma_addr_t len) 792 { 793 return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE); 794 } 795 796 static inline int pci_dma_write(PCIDevice *dev, dma_addr_t addr, 797 const void *buf, dma_addr_t len) 798 { 799 return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEVICE); 800 } 801 802 #define PCI_DMA_DEFINE_LDST(_l, _s, _bits) \ 803 static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev, \ 804 dma_addr_t addr) \ 805 { \ 806 return ld##_l##_dma(pci_get_address_space(dev), addr); \ 807 } \ 808 static inline void st##_s##_pci_dma(PCIDevice *dev, \ 809 dma_addr_t addr, uint##_bits##_t val) \ 810 { \ 811 st##_s##_dma(pci_get_address_space(dev), addr, val); \ 812 } 813 814 PCI_DMA_DEFINE_LDST(ub, b, 8); 815 PCI_DMA_DEFINE_LDST(uw_le, w_le, 16) 816 PCI_DMA_DEFINE_LDST(l_le, l_le, 32); 817 PCI_DMA_DEFINE_LDST(q_le, q_le, 64); 818 PCI_DMA_DEFINE_LDST(uw_be, w_be, 16) 819 PCI_DMA_DEFINE_LDST(l_be, l_be, 32); 820 PCI_DMA_DEFINE_LDST(q_be, q_be, 64); 821 822 #undef PCI_DMA_DEFINE_LDST 823 824 static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, 825 dma_addr_t *plen, DMADirection dir) 826 { 827 void *buf; 828 829 buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir); 830 return buf; 831 } 832 833 static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len, 834 DMADirection dir, dma_addr_t access_len) 835 { 836 dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len); 837 } 838 839 static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev, 840 int alloc_hint) 841 { 842 qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev)); 843 } 844 845 extern const VMStateDescription vmstate_pci_device; 846 847 #define VMSTATE_PCI_DEVICE(_field, _state) { \ 848 .name = (stringify(_field)), \ 849 .size = sizeof(PCIDevice), \ 850 .vmsd = &vmstate_pci_device, \ 851 .flags = VMS_STRUCT, \ 852 .offset = vmstate_offset_value(_state, _field, PCIDevice), \ 853 } 854 855 #define VMSTATE_PCI_DEVICE_POINTER(_field, _state) { \ 856 .name = (stringify(_field)), \ 857 .size = sizeof(PCIDevice), \ 858 .vmsd = &vmstate_pci_device, \ 859 .flags = VMS_STRUCT|VMS_POINTER, \ 860 .offset = vmstate_offset_pointer(_state, _field, PCIDevice), \ 861 } 862 863 MSIMessage pci_get_msi_message(PCIDevice *dev, int vector); 864 865 #endif 866