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 #define PCI_DEVICE_ID_VIRTIO_IOMMU 0x1014 90 #define PCI_DEVICE_ID_VIRTIO_MEM 0x1015 91 92 #define PCI_VENDOR_ID_REDHAT 0x1b36 93 #define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001 94 #define PCI_DEVICE_ID_REDHAT_SERIAL 0x0002 95 #define PCI_DEVICE_ID_REDHAT_SERIAL2 0x0003 96 #define PCI_DEVICE_ID_REDHAT_SERIAL4 0x0004 97 #define PCI_DEVICE_ID_REDHAT_TEST 0x0005 98 #define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 99 #define PCI_DEVICE_ID_REDHAT_SDHCI 0x0007 100 #define PCI_DEVICE_ID_REDHAT_PCIE_HOST 0x0008 101 #define PCI_DEVICE_ID_REDHAT_PXB 0x0009 102 #define PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT 0x000a 103 #define PCI_DEVICE_ID_REDHAT_PXB_PCIE 0x000b 104 #define PCI_DEVICE_ID_REDHAT_PCIE_RP 0x000c 105 #define PCI_DEVICE_ID_REDHAT_XHCI 0x000d 106 #define PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE 0x000e 107 #define PCI_DEVICE_ID_REDHAT_MDPY 0x000f 108 #define PCI_DEVICE_ID_REDHAT_QXL 0x0100 109 110 #define FMT_PCIBUS PRIx64 111 112 typedef uint64_t pcibus_t; 113 114 struct PCIHostDeviceAddress { 115 unsigned int domain; 116 unsigned int bus; 117 unsigned int slot; 118 unsigned int function; 119 }; 120 121 typedef void PCIConfigWriteFunc(PCIDevice *pci_dev, 122 uint32_t address, uint32_t data, int len); 123 typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev, 124 uint32_t address, int len); 125 typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num, 126 pcibus_t addr, pcibus_t size, int type); 127 typedef void PCIUnregisterFunc(PCIDevice *pci_dev); 128 129 typedef struct PCIIORegion { 130 pcibus_t addr; /* current PCI mapping address. -1 means not mapped */ 131 #define PCI_BAR_UNMAPPED (~(pcibus_t)0) 132 pcibus_t size; 133 uint8_t type; 134 MemoryRegion *memory; 135 MemoryRegion *address_space; 136 } PCIIORegion; 137 138 #define PCI_ROM_SLOT 6 139 #define PCI_NUM_REGIONS 7 140 141 enum { 142 QEMU_PCI_VGA_MEM, 143 QEMU_PCI_VGA_IO_LO, 144 QEMU_PCI_VGA_IO_HI, 145 QEMU_PCI_VGA_NUM_REGIONS, 146 }; 147 148 #define QEMU_PCI_VGA_MEM_BASE 0xa0000 149 #define QEMU_PCI_VGA_MEM_SIZE 0x20000 150 #define QEMU_PCI_VGA_IO_LO_BASE 0x3b0 151 #define QEMU_PCI_VGA_IO_LO_SIZE 0xc 152 #define QEMU_PCI_VGA_IO_HI_BASE 0x3c0 153 #define QEMU_PCI_VGA_IO_HI_SIZE 0x20 154 155 #include "hw/pci/pci_regs.h" 156 157 /* PCI HEADER_TYPE */ 158 #define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80 159 160 /* Size of the standard PCI config header */ 161 #define PCI_CONFIG_HEADER_SIZE 0x40 162 /* Size of the standard PCI config space */ 163 #define PCI_CONFIG_SPACE_SIZE 0x100 164 /* Size of the standard PCIe config space: 4KB */ 165 #define PCIE_CONFIG_SPACE_SIZE 0x1000 166 167 #define PCI_NUM_PINS 4 /* A-D */ 168 169 /* Bits in cap_present field. */ 170 enum { 171 QEMU_PCI_CAP_MSI = 0x1, 172 QEMU_PCI_CAP_MSIX = 0x2, 173 QEMU_PCI_CAP_EXPRESS = 0x4, 174 175 /* multifunction capable device */ 176 #define QEMU_PCI_CAP_MULTIFUNCTION_BITNR 3 177 QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR), 178 179 /* command register SERR bit enabled - unused since QEMU v5.0 */ 180 #define QEMU_PCI_CAP_SERR_BITNR 4 181 QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR), 182 /* Standard hot plug controller. */ 183 #define QEMU_PCI_SHPC_BITNR 5 184 QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR), 185 #define QEMU_PCI_SLOTID_BITNR 6 186 QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR), 187 /* PCI Express capability - Power Controller Present */ 188 #define QEMU_PCIE_SLTCAP_PCP_BITNR 7 189 QEMU_PCIE_SLTCAP_PCP = (1 << QEMU_PCIE_SLTCAP_PCP_BITNR), 190 /* Link active status in endpoint capability is always set */ 191 #define QEMU_PCIE_LNKSTA_DLLLA_BITNR 8 192 QEMU_PCIE_LNKSTA_DLLLA = (1 << QEMU_PCIE_LNKSTA_DLLLA_BITNR), 193 #define QEMU_PCIE_EXTCAP_INIT_BITNR 9 194 QEMU_PCIE_EXTCAP_INIT = (1 << QEMU_PCIE_EXTCAP_INIT_BITNR), 195 }; 196 197 #define TYPE_PCI_DEVICE "pci-device" 198 #define PCI_DEVICE(obj) \ 199 OBJECT_CHECK(PCIDevice, (obj), TYPE_PCI_DEVICE) 200 #define PCI_DEVICE_CLASS(klass) \ 201 OBJECT_CLASS_CHECK(PCIDeviceClass, (klass), TYPE_PCI_DEVICE) 202 #define PCI_DEVICE_GET_CLASS(obj) \ 203 OBJECT_GET_CLASS(PCIDeviceClass, (obj), TYPE_PCI_DEVICE) 204 205 /* Implemented by devices that can be plugged on PCI Express buses */ 206 #define INTERFACE_PCIE_DEVICE "pci-express-device" 207 208 /* Implemented by devices that can be plugged on Conventional PCI buses */ 209 #define INTERFACE_CONVENTIONAL_PCI_DEVICE "conventional-pci-device" 210 211 typedef struct PCIINTxRoute { 212 enum { 213 PCI_INTX_ENABLED, 214 PCI_INTX_INVERTED, 215 PCI_INTX_DISABLED, 216 } mode; 217 int irq; 218 } PCIINTxRoute; 219 220 typedef struct PCIDeviceClass { 221 DeviceClass parent_class; 222 223 void (*realize)(PCIDevice *dev, Error **errp); 224 PCIUnregisterFunc *exit; 225 PCIConfigReadFunc *config_read; 226 PCIConfigWriteFunc *config_write; 227 228 uint16_t vendor_id; 229 uint16_t device_id; 230 uint8_t revision; 231 uint16_t class_id; 232 uint16_t subsystem_vendor_id; /* only for header type = 0 */ 233 uint16_t subsystem_id; /* only for header type = 0 */ 234 235 /* 236 * pci-to-pci bridge or normal device. 237 * This doesn't mean pci host switch. 238 * When card bus bridge is supported, this would be enhanced. 239 */ 240 bool is_bridge; 241 242 /* rom bar */ 243 const char *romfile; 244 } PCIDeviceClass; 245 246 typedef void (*PCIINTxRoutingNotifier)(PCIDevice *dev); 247 typedef int (*MSIVectorUseNotifier)(PCIDevice *dev, unsigned int vector, 248 MSIMessage msg); 249 typedef void (*MSIVectorReleaseNotifier)(PCIDevice *dev, unsigned int vector); 250 typedef void (*MSIVectorPollNotifier)(PCIDevice *dev, 251 unsigned int vector_start, 252 unsigned int vector_end); 253 254 enum PCIReqIDType { 255 PCI_REQ_ID_INVALID = 0, 256 PCI_REQ_ID_BDF, 257 PCI_REQ_ID_SECONDARY_BUS, 258 PCI_REQ_ID_MAX, 259 }; 260 typedef enum PCIReqIDType PCIReqIDType; 261 262 struct PCIReqIDCache { 263 PCIDevice *dev; 264 PCIReqIDType type; 265 }; 266 typedef struct PCIReqIDCache PCIReqIDCache; 267 268 struct PCIDevice { 269 DeviceState qdev; 270 bool partially_hotplugged; 271 272 /* PCI config space */ 273 uint8_t *config; 274 275 /* Used to enable config checks on load. Note that writable bits are 276 * never checked even if set in cmask. */ 277 uint8_t *cmask; 278 279 /* Used to implement R/W bytes */ 280 uint8_t *wmask; 281 282 /* Used to implement RW1C(Write 1 to Clear) bytes */ 283 uint8_t *w1cmask; 284 285 /* Used to allocate config space for capabilities. */ 286 uint8_t *used; 287 288 /* the following fields are read only */ 289 int32_t devfn; 290 /* Cached device to fetch requester ID from, to avoid the PCI 291 * tree walking every time we invoke PCI request (e.g., 292 * MSI). For conventional PCI root complex, this field is 293 * meaningless. */ 294 PCIReqIDCache requester_id_cache; 295 char name[64]; 296 PCIIORegion io_regions[PCI_NUM_REGIONS]; 297 AddressSpace bus_master_as; 298 MemoryRegion bus_master_container_region; 299 MemoryRegion bus_master_enable_region; 300 301 /* do not access the following fields */ 302 PCIConfigReadFunc *config_read; 303 PCIConfigWriteFunc *config_write; 304 305 /* Legacy PCI VGA regions */ 306 MemoryRegion *vga_regions[QEMU_PCI_VGA_NUM_REGIONS]; 307 bool has_vga; 308 309 /* Current IRQ levels. Used internally by the generic PCI code. */ 310 uint8_t irq_state; 311 312 /* Capability bits */ 313 uint32_t cap_present; 314 315 /* Offset of MSI-X capability in config space */ 316 uint8_t msix_cap; 317 318 /* MSI-X entries */ 319 int msix_entries_nr; 320 321 /* Space to store MSIX table & pending bit array */ 322 uint8_t *msix_table; 323 uint8_t *msix_pba; 324 /* MemoryRegion container for msix exclusive BAR setup */ 325 MemoryRegion msix_exclusive_bar; 326 /* Memory Regions for MSIX table and pending bit entries. */ 327 MemoryRegion msix_table_mmio; 328 MemoryRegion msix_pba_mmio; 329 /* Reference-count for entries actually in use by driver. */ 330 unsigned *msix_entry_used; 331 /* MSIX function mask set or MSIX disabled */ 332 bool msix_function_masked; 333 /* Version id needed for VMState */ 334 int32_t version_id; 335 336 /* Offset of MSI capability in config space */ 337 uint8_t msi_cap; 338 339 /* PCI Express */ 340 PCIExpressDevice exp; 341 342 /* SHPC */ 343 SHPCDevice *shpc; 344 345 /* Location of option rom */ 346 char *romfile; 347 bool has_rom; 348 MemoryRegion rom; 349 uint32_t rom_bar; 350 351 /* INTx routing notifier */ 352 PCIINTxRoutingNotifier intx_routing_notifier; 353 354 /* MSI-X notifiers */ 355 MSIVectorUseNotifier msix_vector_use_notifier; 356 MSIVectorReleaseNotifier msix_vector_release_notifier; 357 MSIVectorPollNotifier msix_vector_poll_notifier; 358 359 /* ID of standby device in net_failover pair */ 360 char *failover_pair_id; 361 }; 362 363 void pci_register_bar(PCIDevice *pci_dev, int region_num, 364 uint8_t attr, MemoryRegion *memory); 365 void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, 366 MemoryRegion *io_lo, MemoryRegion *io_hi); 367 void pci_unregister_vga(PCIDevice *pci_dev); 368 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num); 369 370 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, 371 uint8_t offset, uint8_t size, 372 Error **errp); 373 374 void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size); 375 376 uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id); 377 378 379 uint32_t pci_default_read_config(PCIDevice *d, 380 uint32_t address, int len); 381 void pci_default_write_config(PCIDevice *d, 382 uint32_t address, uint32_t val, int len); 383 void pci_device_save(PCIDevice *s, QEMUFile *f); 384 int pci_device_load(PCIDevice *s, QEMUFile *f); 385 MemoryRegion *pci_address_space(PCIDevice *dev); 386 MemoryRegion *pci_address_space_io(PCIDevice *dev); 387 388 /* 389 * Should not normally be used by devices. For use by sPAPR target 390 * where QEMU emulates firmware. 391 */ 392 int pci_bar(PCIDevice *d, int reg); 393 394 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level); 395 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num); 396 typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); 397 398 #define TYPE_PCI_BUS "PCI" 399 typedef struct PCIBusClass PCIBusClass; 400 #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) 401 #define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) 402 #define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) 403 #define TYPE_PCIE_BUS "PCIE" 404 405 bool pci_bus_is_express(PCIBus *bus); 406 407 void pci_root_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, 408 const char *name, 409 MemoryRegion *address_space_mem, 410 MemoryRegion *address_space_io, 411 uint8_t devfn_min, const char *typename); 412 PCIBus *pci_root_bus_new(DeviceState *parent, const char *name, 413 MemoryRegion *address_space_mem, 414 MemoryRegion *address_space_io, 415 uint8_t devfn_min, const char *typename); 416 void pci_root_bus_cleanup(PCIBus *bus); 417 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 418 void *irq_opaque, int nirq); 419 void pci_bus_irqs_cleanup(PCIBus *bus); 420 int pci_bus_get_irq_level(PCIBus *bus, int irq_num); 421 /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ 422 static inline int pci_swizzle(int slot, int pin) 423 { 424 return (slot + pin) % PCI_NUM_PINS; 425 } 426 int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); 427 PCIBus *pci_register_root_bus(DeviceState *parent, const char *name, 428 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 429 void *irq_opaque, 430 MemoryRegion *address_space_mem, 431 MemoryRegion *address_space_io, 432 uint8_t devfn_min, int nirq, 433 const char *typename); 434 void pci_unregister_root_bus(PCIBus *bus); 435 void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn); 436 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin); 437 bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new); 438 void pci_bus_fire_intx_routing_notifier(PCIBus *bus); 439 void pci_device_set_intx_routing_notifier(PCIDevice *dev, 440 PCIINTxRoutingNotifier notifier); 441 void pci_device_reset(PCIDevice *dev); 442 443 PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, 444 const char *default_model, 445 const char *default_devaddr); 446 447 PCIDevice *pci_vga_init(PCIBus *bus); 448 449 static inline PCIBus *pci_get_bus(const PCIDevice *dev) 450 { 451 return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); 452 } 453 int pci_bus_num(PCIBus *s); 454 static inline int pci_dev_bus_num(const PCIDevice *dev) 455 { 456 return pci_bus_num(pci_get_bus(dev)); 457 } 458 459 int pci_bus_numa_node(PCIBus *bus); 460 void pci_for_each_device(PCIBus *bus, int bus_num, 461 void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque), 462 void *opaque); 463 void pci_for_each_device_reverse(PCIBus *bus, int bus_num, 464 void (*fn)(PCIBus *bus, PCIDevice *d, 465 void *opaque), 466 void *opaque); 467 void pci_for_each_bus_depth_first(PCIBus *bus, 468 void *(*begin)(PCIBus *bus, void *parent_state), 469 void (*end)(PCIBus *bus, void *state), 470 void *parent_state); 471 PCIDevice *pci_get_function_0(PCIDevice *pci_dev); 472 473 /* Use this wrapper when specific scan order is not required. */ 474 static inline 475 void pci_for_each_bus(PCIBus *bus, 476 void (*fn)(PCIBus *bus, void *opaque), 477 void *opaque) 478 { 479 pci_for_each_bus_depth_first(bus, NULL, fn, opaque); 480 } 481 482 PCIBus *pci_device_root_bus(const PCIDevice *d); 483 const char *pci_root_bus_path(PCIDevice *dev); 484 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); 485 int pci_qdev_find_device(const char *id, PCIDevice **pdev); 486 void pci_bus_get_w64_range(PCIBus *bus, Range *range); 487 488 void pci_device_deassert_intx(PCIDevice *dev); 489 490 typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); 491 492 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); 493 void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); 494 495 static inline void 496 pci_set_byte(uint8_t *config, uint8_t val) 497 { 498 *config = val; 499 } 500 501 static inline uint8_t 502 pci_get_byte(const uint8_t *config) 503 { 504 return *config; 505 } 506 507 static inline void 508 pci_set_word(uint8_t *config, uint16_t val) 509 { 510 stw_le_p(config, val); 511 } 512 513 static inline uint16_t 514 pci_get_word(const uint8_t *config) 515 { 516 return lduw_le_p(config); 517 } 518 519 static inline void 520 pci_set_long(uint8_t *config, uint32_t val) 521 { 522 stl_le_p(config, val); 523 } 524 525 static inline uint32_t 526 pci_get_long(const uint8_t *config) 527 { 528 return ldl_le_p(config); 529 } 530 531 /* 532 * PCI capabilities and/or their fields 533 * are generally DWORD aligned only so 534 * mechanism used by pci_set/get_quad() 535 * must be tolerant to unaligned pointers 536 * 537 */ 538 static inline void 539 pci_set_quad(uint8_t *config, uint64_t val) 540 { 541 stq_le_p(config, val); 542 } 543 544 static inline uint64_t 545 pci_get_quad(const uint8_t *config) 546 { 547 return ldq_le_p(config); 548 } 549 550 static inline void 551 pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val) 552 { 553 pci_set_word(&pci_config[PCI_VENDOR_ID], val); 554 } 555 556 static inline void 557 pci_config_set_device_id(uint8_t *pci_config, uint16_t val) 558 { 559 pci_set_word(&pci_config[PCI_DEVICE_ID], val); 560 } 561 562 static inline void 563 pci_config_set_revision(uint8_t *pci_config, uint8_t val) 564 { 565 pci_set_byte(&pci_config[PCI_REVISION_ID], val); 566 } 567 568 static inline void 569 pci_config_set_class(uint8_t *pci_config, uint16_t val) 570 { 571 pci_set_word(&pci_config[PCI_CLASS_DEVICE], val); 572 } 573 574 static inline void 575 pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val) 576 { 577 pci_set_byte(&pci_config[PCI_CLASS_PROG], val); 578 } 579 580 static inline void 581 pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val) 582 { 583 pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val); 584 } 585 586 /* 587 * helper functions to do bit mask operation on configuration space. 588 * Just to set bit, use test-and-set and discard returned value. 589 * Just to clear bit, use test-and-clear and discard returned value. 590 * NOTE: They aren't atomic. 591 */ 592 static inline uint8_t 593 pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask) 594 { 595 uint8_t val = pci_get_byte(config); 596 pci_set_byte(config, val & ~mask); 597 return val & mask; 598 } 599 600 static inline uint8_t 601 pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask) 602 { 603 uint8_t val = pci_get_byte(config); 604 pci_set_byte(config, val | mask); 605 return val & mask; 606 } 607 608 static inline uint16_t 609 pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask) 610 { 611 uint16_t val = pci_get_word(config); 612 pci_set_word(config, val & ~mask); 613 return val & mask; 614 } 615 616 static inline uint16_t 617 pci_word_test_and_set_mask(uint8_t *config, uint16_t mask) 618 { 619 uint16_t val = pci_get_word(config); 620 pci_set_word(config, val | mask); 621 return val & mask; 622 } 623 624 static inline uint32_t 625 pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask) 626 { 627 uint32_t val = pci_get_long(config); 628 pci_set_long(config, val & ~mask); 629 return val & mask; 630 } 631 632 static inline uint32_t 633 pci_long_test_and_set_mask(uint8_t *config, uint32_t mask) 634 { 635 uint32_t val = pci_get_long(config); 636 pci_set_long(config, val | mask); 637 return val & mask; 638 } 639 640 static inline uint64_t 641 pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask) 642 { 643 uint64_t val = pci_get_quad(config); 644 pci_set_quad(config, val & ~mask); 645 return val & mask; 646 } 647 648 static inline uint64_t 649 pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask) 650 { 651 uint64_t val = pci_get_quad(config); 652 pci_set_quad(config, val | mask); 653 return val & mask; 654 } 655 656 /* Access a register specified by a mask */ 657 static inline void 658 pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg) 659 { 660 uint8_t val = pci_get_byte(config); 661 uint8_t rval = reg << ctz32(mask); 662 pci_set_byte(config, (~mask & val) | (mask & rval)); 663 } 664 665 static inline uint8_t 666 pci_get_byte_by_mask(uint8_t *config, uint8_t mask) 667 { 668 uint8_t val = pci_get_byte(config); 669 return (val & mask) >> ctz32(mask); 670 } 671 672 static inline void 673 pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg) 674 { 675 uint16_t val = pci_get_word(config); 676 uint16_t rval = reg << ctz32(mask); 677 pci_set_word(config, (~mask & val) | (mask & rval)); 678 } 679 680 static inline uint16_t 681 pci_get_word_by_mask(uint8_t *config, uint16_t mask) 682 { 683 uint16_t val = pci_get_word(config); 684 return (val & mask) >> ctz32(mask); 685 } 686 687 static inline void 688 pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg) 689 { 690 uint32_t val = pci_get_long(config); 691 uint32_t rval = reg << ctz32(mask); 692 pci_set_long(config, (~mask & val) | (mask & rval)); 693 } 694 695 static inline uint32_t 696 pci_get_long_by_mask(uint8_t *config, uint32_t mask) 697 { 698 uint32_t val = pci_get_long(config); 699 return (val & mask) >> ctz32(mask); 700 } 701 702 static inline void 703 pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg) 704 { 705 uint64_t val = pci_get_quad(config); 706 uint64_t rval = reg << ctz32(mask); 707 pci_set_quad(config, (~mask & val) | (mask & rval)); 708 } 709 710 static inline uint64_t 711 pci_get_quad_by_mask(uint8_t *config, uint64_t mask) 712 { 713 uint64_t val = pci_get_quad(config); 714 return (val & mask) >> ctz32(mask); 715 } 716 717 PCIDevice *pci_new_multifunction(int devfn, bool multifunction, 718 const char *name); 719 PCIDevice *pci_new(int devfn, const char *name); 720 bool pci_realize_and_unref(PCIDevice *dev, PCIBus *bus, Error **errp); 721 722 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, 723 bool multifunction, 724 const char *name); 725 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name); 726 727 void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev); 728 729 qemu_irq pci_allocate_irq(PCIDevice *pci_dev); 730 void pci_set_irq(PCIDevice *pci_dev, int level); 731 732 static inline void pci_irq_assert(PCIDevice *pci_dev) 733 { 734 pci_set_irq(pci_dev, 1); 735 } 736 737 static inline void pci_irq_deassert(PCIDevice *pci_dev) 738 { 739 pci_set_irq(pci_dev, 0); 740 } 741 742 /* 743 * FIXME: PCI does not work this way. 744 * All the callers to this method should be fixed. 745 */ 746 static inline void pci_irq_pulse(PCIDevice *pci_dev) 747 { 748 pci_irq_assert(pci_dev); 749 pci_irq_deassert(pci_dev); 750 } 751 752 static inline int pci_is_express(const PCIDevice *d) 753 { 754 return d->cap_present & QEMU_PCI_CAP_EXPRESS; 755 } 756 757 static inline int pci_is_express_downstream_port(const PCIDevice *d) 758 { 759 uint8_t type; 760 761 if (!pci_is_express(d) || !d->exp.exp_cap) { 762 return 0; 763 } 764 765 type = pcie_cap_get_type(d); 766 767 return type == PCI_EXP_TYPE_DOWNSTREAM || type == PCI_EXP_TYPE_ROOT_PORT; 768 } 769 770 static inline uint32_t pci_config_size(const PCIDevice *d) 771 { 772 return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE; 773 } 774 775 static inline uint16_t pci_get_bdf(PCIDevice *dev) 776 { 777 return PCI_BUILD_BDF(pci_bus_num(pci_get_bus(dev)), dev->devfn); 778 } 779 780 uint16_t pci_requester_id(PCIDevice *dev); 781 782 /* DMA access functions */ 783 static inline AddressSpace *pci_get_address_space(PCIDevice *dev) 784 { 785 return &dev->bus_master_as; 786 } 787 788 static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr, 789 void *buf, dma_addr_t len, DMADirection dir) 790 { 791 dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); 792 return 0; 793 } 794 795 static inline int pci_dma_read(PCIDevice *dev, dma_addr_t addr, 796 void *buf, dma_addr_t len) 797 { 798 return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE); 799 } 800 801 static inline int pci_dma_write(PCIDevice *dev, dma_addr_t addr, 802 const void *buf, dma_addr_t len) 803 { 804 return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEVICE); 805 } 806 807 #define PCI_DMA_DEFINE_LDST(_l, _s, _bits) \ 808 static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev, \ 809 dma_addr_t addr) \ 810 { \ 811 return ld##_l##_dma(pci_get_address_space(dev), addr); \ 812 } \ 813 static inline void st##_s##_pci_dma(PCIDevice *dev, \ 814 dma_addr_t addr, uint##_bits##_t val) \ 815 { \ 816 st##_s##_dma(pci_get_address_space(dev), addr, val); \ 817 } 818 819 PCI_DMA_DEFINE_LDST(ub, b, 8); 820 PCI_DMA_DEFINE_LDST(uw_le, w_le, 16) 821 PCI_DMA_DEFINE_LDST(l_le, l_le, 32); 822 PCI_DMA_DEFINE_LDST(q_le, q_le, 64); 823 PCI_DMA_DEFINE_LDST(uw_be, w_be, 16) 824 PCI_DMA_DEFINE_LDST(l_be, l_be, 32); 825 PCI_DMA_DEFINE_LDST(q_be, q_be, 64); 826 827 #undef PCI_DMA_DEFINE_LDST 828 829 static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, 830 dma_addr_t *plen, DMADirection dir) 831 { 832 void *buf; 833 834 buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir); 835 return buf; 836 } 837 838 static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len, 839 DMADirection dir, dma_addr_t access_len) 840 { 841 dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len); 842 } 843 844 static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev, 845 int alloc_hint) 846 { 847 qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev)); 848 } 849 850 extern const VMStateDescription vmstate_pci_device; 851 852 #define VMSTATE_PCI_DEVICE(_field, _state) { \ 853 .name = (stringify(_field)), \ 854 .size = sizeof(PCIDevice), \ 855 .vmsd = &vmstate_pci_device, \ 856 .flags = VMS_STRUCT, \ 857 .offset = vmstate_offset_value(_state, _field, PCIDevice), \ 858 } 859 860 #define VMSTATE_PCI_DEVICE_POINTER(_field, _state) { \ 861 .name = (stringify(_field)), \ 862 .size = sizeof(PCIDevice), \ 863 .vmsd = &vmstate_pci_device, \ 864 .flags = VMS_STRUCT|VMS_POINTER, \ 865 .offset = vmstate_offset_pointer(_state, _field, PCIDevice), \ 866 } 867 868 MSIMessage pci_get_msi_message(PCIDevice *dev, int vector); 869 870 #endif 871