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 #include "qom/object.h" 12 13 extern bool pci_available; 14 15 /* PCI bus */ 16 17 #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 18 #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) 19 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 20 #define PCI_FUNC(devfn) ((devfn) & 0x07) 21 #define PCI_BUILD_BDF(bus, devfn) ((bus << 8) | (devfn)) 22 #define PCI_BUS_MAX 256 23 #define PCI_DEVFN_MAX 256 24 #define PCI_SLOT_MAX 32 25 #define PCI_FUNC_MAX 8 26 27 /* Class, Vendor and Device IDs from Linux's pci_ids.h */ 28 #include "hw/pci/pci_ids.h" 29 30 /* QEMU-specific Vendor and Device ID definitions */ 31 32 /* IBM (0x1014) */ 33 #define PCI_DEVICE_ID_IBM_440GX 0x027f 34 #define PCI_DEVICE_ID_IBM_OPENPIC2 0xffff 35 36 /* Hitachi (0x1054) */ 37 #define PCI_VENDOR_ID_HITACHI 0x1054 38 #define PCI_DEVICE_ID_HITACHI_SH7751R 0x350e 39 40 /* Apple (0x106b) */ 41 #define PCI_DEVICE_ID_APPLE_343S1201 0x0010 42 #define PCI_DEVICE_ID_APPLE_UNI_N_I_PCI 0x001e 43 #define PCI_DEVICE_ID_APPLE_UNI_N_PCI 0x001f 44 #define PCI_DEVICE_ID_APPLE_UNI_N_KEYL 0x0022 45 #define PCI_DEVICE_ID_APPLE_IPID_USB 0x003f 46 47 /* Realtek (0x10ec) */ 48 #define PCI_DEVICE_ID_REALTEK_8029 0x8029 49 50 /* Xilinx (0x10ee) */ 51 #define PCI_DEVICE_ID_XILINX_XC2VP30 0x0300 52 53 /* Marvell (0x11ab) */ 54 #define PCI_DEVICE_ID_MARVELL_GT6412X 0x4620 55 56 /* QEMU/Bochs VGA (0x1234) */ 57 #define PCI_VENDOR_ID_QEMU 0x1234 58 #define PCI_DEVICE_ID_QEMU_VGA 0x1111 59 #define PCI_DEVICE_ID_QEMU_IPMI 0x1112 60 61 /* VMWare (0x15ad) */ 62 #define PCI_VENDOR_ID_VMWARE 0x15ad 63 #define PCI_DEVICE_ID_VMWARE_SVGA2 0x0405 64 #define PCI_DEVICE_ID_VMWARE_SVGA 0x0710 65 #define PCI_DEVICE_ID_VMWARE_NET 0x0720 66 #define PCI_DEVICE_ID_VMWARE_SCSI 0x0730 67 #define PCI_DEVICE_ID_VMWARE_PVSCSI 0x07C0 68 #define PCI_DEVICE_ID_VMWARE_IDE 0x1729 69 #define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0 70 71 /* Intel (0x8086) */ 72 #define PCI_DEVICE_ID_INTEL_82551IT 0x1209 73 #define PCI_DEVICE_ID_INTEL_82557 0x1229 74 #define PCI_DEVICE_ID_INTEL_82801IR 0x2922 75 76 /* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */ 77 #define PCI_VENDOR_ID_REDHAT_QUMRANET 0x1af4 78 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4 79 #define PCI_SUBDEVICE_ID_QEMU 0x1100 80 81 #define PCI_DEVICE_ID_VIRTIO_NET 0x1000 82 #define PCI_DEVICE_ID_VIRTIO_BLOCK 0x1001 83 #define PCI_DEVICE_ID_VIRTIO_BALLOON 0x1002 84 #define PCI_DEVICE_ID_VIRTIO_CONSOLE 0x1003 85 #define PCI_DEVICE_ID_VIRTIO_SCSI 0x1004 86 #define PCI_DEVICE_ID_VIRTIO_RNG 0x1005 87 #define PCI_DEVICE_ID_VIRTIO_9P 0x1009 88 #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012 89 #define PCI_DEVICE_ID_VIRTIO_PMEM 0x1013 90 #define PCI_DEVICE_ID_VIRTIO_IOMMU 0x1014 91 #define PCI_DEVICE_ID_VIRTIO_MEM 0x1015 92 93 #define PCI_VENDOR_ID_REDHAT 0x1b36 94 #define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001 95 #define PCI_DEVICE_ID_REDHAT_SERIAL 0x0002 96 #define PCI_DEVICE_ID_REDHAT_SERIAL2 0x0003 97 #define PCI_DEVICE_ID_REDHAT_SERIAL4 0x0004 98 #define PCI_DEVICE_ID_REDHAT_TEST 0x0005 99 #define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 100 #define PCI_DEVICE_ID_REDHAT_SDHCI 0x0007 101 #define PCI_DEVICE_ID_REDHAT_PCIE_HOST 0x0008 102 #define PCI_DEVICE_ID_REDHAT_PXB 0x0009 103 #define PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT 0x000a 104 #define PCI_DEVICE_ID_REDHAT_PXB_PCIE 0x000b 105 #define PCI_DEVICE_ID_REDHAT_PCIE_RP 0x000c 106 #define PCI_DEVICE_ID_REDHAT_XHCI 0x000d 107 #define PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE 0x000e 108 #define PCI_DEVICE_ID_REDHAT_MDPY 0x000f 109 #define PCI_DEVICE_ID_REDHAT_NVME 0x0010 110 #define PCI_DEVICE_ID_REDHAT_PVPANIC 0x0011 111 #define PCI_DEVICE_ID_REDHAT_QXL 0x0100 112 113 #define FMT_PCIBUS PRIx64 114 115 typedef uint64_t pcibus_t; 116 117 struct PCIHostDeviceAddress { 118 unsigned int domain; 119 unsigned int bus; 120 unsigned int slot; 121 unsigned int function; 122 }; 123 124 typedef void PCIConfigWriteFunc(PCIDevice *pci_dev, 125 uint32_t address, uint32_t data, int len); 126 typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev, 127 uint32_t address, int len); 128 typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num, 129 pcibus_t addr, pcibus_t size, int type); 130 typedef void PCIUnregisterFunc(PCIDevice *pci_dev); 131 132 typedef struct PCIIORegion { 133 pcibus_t addr; /* current PCI mapping address. -1 means not mapped */ 134 #define PCI_BAR_UNMAPPED (~(pcibus_t)0) 135 pcibus_t size; 136 uint8_t type; 137 MemoryRegion *memory; 138 MemoryRegion *address_space; 139 } PCIIORegion; 140 141 #define PCI_ROM_SLOT 6 142 #define PCI_NUM_REGIONS 7 143 144 enum { 145 QEMU_PCI_VGA_MEM, 146 QEMU_PCI_VGA_IO_LO, 147 QEMU_PCI_VGA_IO_HI, 148 QEMU_PCI_VGA_NUM_REGIONS, 149 }; 150 151 #define QEMU_PCI_VGA_MEM_BASE 0xa0000 152 #define QEMU_PCI_VGA_MEM_SIZE 0x20000 153 #define QEMU_PCI_VGA_IO_LO_BASE 0x3b0 154 #define QEMU_PCI_VGA_IO_LO_SIZE 0xc 155 #define QEMU_PCI_VGA_IO_HI_BASE 0x3c0 156 #define QEMU_PCI_VGA_IO_HI_SIZE 0x20 157 158 #include "hw/pci/pci_regs.h" 159 160 /* PCI HEADER_TYPE */ 161 #define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80 162 163 /* Size of the standard PCI config header */ 164 #define PCI_CONFIG_HEADER_SIZE 0x40 165 /* Size of the standard PCI config space */ 166 #define PCI_CONFIG_SPACE_SIZE 0x100 167 /* Size of the standard PCIe config space: 4KB */ 168 #define PCIE_CONFIG_SPACE_SIZE 0x1000 169 170 #define PCI_NUM_PINS 4 /* A-D */ 171 172 /* Bits in cap_present field. */ 173 enum { 174 QEMU_PCI_CAP_MSI = 0x1, 175 QEMU_PCI_CAP_MSIX = 0x2, 176 QEMU_PCI_CAP_EXPRESS = 0x4, 177 178 /* multifunction capable device */ 179 #define QEMU_PCI_CAP_MULTIFUNCTION_BITNR 3 180 QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR), 181 182 /* command register SERR bit enabled - unused since QEMU v5.0 */ 183 #define QEMU_PCI_CAP_SERR_BITNR 4 184 QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR), 185 /* Standard hot plug controller. */ 186 #define QEMU_PCI_SHPC_BITNR 5 187 QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR), 188 #define QEMU_PCI_SLOTID_BITNR 6 189 QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR), 190 /* PCI Express capability - Power Controller Present */ 191 #define QEMU_PCIE_SLTCAP_PCP_BITNR 7 192 QEMU_PCIE_SLTCAP_PCP = (1 << QEMU_PCIE_SLTCAP_PCP_BITNR), 193 /* Link active status in endpoint capability is always set */ 194 #define QEMU_PCIE_LNKSTA_DLLLA_BITNR 8 195 QEMU_PCIE_LNKSTA_DLLLA = (1 << QEMU_PCIE_LNKSTA_DLLLA_BITNR), 196 #define QEMU_PCIE_EXTCAP_INIT_BITNR 9 197 QEMU_PCIE_EXTCAP_INIT = (1 << QEMU_PCIE_EXTCAP_INIT_BITNR), 198 }; 199 200 #define TYPE_PCI_DEVICE "pci-device" 201 typedef struct PCIDeviceClass PCIDeviceClass; 202 DECLARE_OBJ_CHECKERS(PCIDevice, PCIDeviceClass, 203 PCI_DEVICE, 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 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 }; 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 bool has_power; 272 273 /* PCI config space */ 274 uint8_t *config; 275 276 /* Used to enable config checks on load. Note that writable bits are 277 * never checked even if set in cmask. */ 278 uint8_t *cmask; 279 280 /* Used to implement R/W bytes */ 281 uint8_t *wmask; 282 283 /* Used to implement RW1C(Write 1 to Clear) bytes */ 284 uint8_t *w1cmask; 285 286 /* Used to allocate config space for capabilities. */ 287 uint8_t *used; 288 289 /* the following fields are read only */ 290 int32_t devfn; 291 /* Cached device to fetch requester ID from, to avoid the PCI 292 * tree walking every time we invoke PCI request (e.g., 293 * MSI). For conventional PCI root complex, this field is 294 * meaningless. */ 295 PCIReqIDCache requester_id_cache; 296 char name[64]; 297 PCIIORegion io_regions[PCI_NUM_REGIONS]; 298 AddressSpace bus_master_as; 299 MemoryRegion bus_master_container_region; 300 MemoryRegion bus_master_enable_region; 301 302 /* do not access the following fields */ 303 PCIConfigReadFunc *config_read; 304 PCIConfigWriteFunc *config_write; 305 306 /* Legacy PCI VGA regions */ 307 MemoryRegion *vga_regions[QEMU_PCI_VGA_NUM_REGIONS]; 308 bool has_vga; 309 310 /* Current IRQ levels. Used internally by the generic PCI code. */ 311 uint8_t irq_state; 312 313 /* Capability bits */ 314 uint32_t cap_present; 315 316 /* Offset of MSI-X capability in config space */ 317 uint8_t msix_cap; 318 319 /* MSI-X entries */ 320 int msix_entries_nr; 321 322 /* Space to store MSIX table & pending bit array */ 323 uint8_t *msix_table; 324 uint8_t *msix_pba; 325 /* MemoryRegion container for msix exclusive BAR setup */ 326 MemoryRegion msix_exclusive_bar; 327 /* Memory Regions for MSIX table and pending bit entries. */ 328 MemoryRegion msix_table_mmio; 329 MemoryRegion msix_pba_mmio; 330 /* Reference-count for entries actually in use by driver. */ 331 unsigned *msix_entry_used; 332 /* MSIX function mask set or MSIX disabled */ 333 bool msix_function_masked; 334 /* Version id needed for VMState */ 335 int32_t version_id; 336 337 /* Offset of MSI capability in config space */ 338 uint8_t msi_cap; 339 340 /* PCI Express */ 341 PCIExpressDevice exp; 342 343 /* SHPC */ 344 SHPCDevice *shpc; 345 346 /* Location of option rom */ 347 char *romfile; 348 uint32_t romsize; 349 bool has_rom; 350 MemoryRegion rom; 351 uint32_t rom_bar; 352 353 /* INTx routing notifier */ 354 PCIINTxRoutingNotifier intx_routing_notifier; 355 356 /* MSI-X notifiers */ 357 MSIVectorUseNotifier msix_vector_use_notifier; 358 MSIVectorReleaseNotifier msix_vector_release_notifier; 359 MSIVectorPollNotifier msix_vector_poll_notifier; 360 361 /* ID of standby device in net_failover pair */ 362 char *failover_pair_id; 363 uint32_t acpi_index; 364 }; 365 366 void pci_register_bar(PCIDevice *pci_dev, int region_num, 367 uint8_t attr, MemoryRegion *memory); 368 void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, 369 MemoryRegion *io_lo, MemoryRegion *io_hi); 370 void pci_unregister_vga(PCIDevice *pci_dev); 371 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num); 372 373 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, 374 uint8_t offset, uint8_t size, 375 Error **errp); 376 377 void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size); 378 379 uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id); 380 381 382 uint32_t pci_default_read_config(PCIDevice *d, 383 uint32_t address, int len); 384 void pci_default_write_config(PCIDevice *d, 385 uint32_t address, uint32_t val, int len); 386 void pci_device_save(PCIDevice *s, QEMUFile *f); 387 int pci_device_load(PCIDevice *s, QEMUFile *f); 388 MemoryRegion *pci_address_space(PCIDevice *dev); 389 MemoryRegion *pci_address_space_io(PCIDevice *dev); 390 391 /* 392 * Should not normally be used by devices. For use by sPAPR target 393 * where QEMU emulates firmware. 394 */ 395 int pci_bar(PCIDevice *d, int reg); 396 397 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level); 398 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num); 399 typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); 400 401 #define TYPE_PCI_BUS "PCI" 402 OBJECT_DECLARE_TYPE(PCIBus, PCIBusClass, PCI_BUS) 403 #define TYPE_PCIE_BUS "PCIE" 404 405 typedef void (*pci_bus_dev_fn)(PCIBus *b, PCIDevice *d, void *opaque); 406 typedef void (*pci_bus_fn)(PCIBus *b, void *opaque); 407 typedef void *(*pci_bus_ret_fn)(PCIBus *b, void *opaque); 408 409 bool pci_bus_is_express(PCIBus *bus); 410 411 void pci_root_bus_init(PCIBus *bus, size_t bus_size, DeviceState *parent, 412 const char *name, 413 MemoryRegion *address_space_mem, 414 MemoryRegion *address_space_io, 415 uint8_t devfn_min, const char *typename); 416 PCIBus *pci_root_bus_new(DeviceState *parent, const char *name, 417 MemoryRegion *address_space_mem, 418 MemoryRegion *address_space_io, 419 uint8_t devfn_min, const char *typename); 420 void pci_root_bus_cleanup(PCIBus *bus); 421 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 422 void *irq_opaque, int nirq); 423 void pci_bus_irqs_cleanup(PCIBus *bus); 424 int pci_bus_get_irq_level(PCIBus *bus, int irq_num); 425 /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ 426 static inline int pci_swizzle(int slot, int pin) 427 { 428 return (slot + pin) % PCI_NUM_PINS; 429 } 430 int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); 431 PCIBus *pci_register_root_bus(DeviceState *parent, const char *name, 432 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 433 void *irq_opaque, 434 MemoryRegion *address_space_mem, 435 MemoryRegion *address_space_io, 436 uint8_t devfn_min, int nirq, 437 const char *typename); 438 void pci_unregister_root_bus(PCIBus *bus); 439 void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn); 440 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin); 441 bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new); 442 void pci_bus_fire_intx_routing_notifier(PCIBus *bus); 443 void pci_device_set_intx_routing_notifier(PCIDevice *dev, 444 PCIINTxRoutingNotifier notifier); 445 void pci_device_reset(PCIDevice *dev); 446 447 PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, 448 const char *default_model, 449 const char *default_devaddr); 450 451 PCIDevice *pci_vga_init(PCIBus *bus); 452 453 static inline PCIBus *pci_get_bus(const PCIDevice *dev) 454 { 455 return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); 456 } 457 int pci_bus_num(PCIBus *s); 458 void pci_bus_range(PCIBus *bus, int *min_bus, int *max_bus); 459 static inline int pci_dev_bus_num(const PCIDevice *dev) 460 { 461 return pci_bus_num(pci_get_bus(dev)); 462 } 463 464 int pci_bus_numa_node(PCIBus *bus); 465 void pci_for_each_device(PCIBus *bus, int bus_num, 466 pci_bus_dev_fn fn, 467 void *opaque); 468 void pci_for_each_device_reverse(PCIBus *bus, int bus_num, 469 pci_bus_dev_fn fn, 470 void *opaque); 471 void pci_for_each_device_under_bus(PCIBus *bus, 472 pci_bus_dev_fn fn, void *opaque); 473 void pci_for_each_device_under_bus_reverse(PCIBus *bus, 474 pci_bus_dev_fn fn, 475 void *opaque); 476 void pci_for_each_bus_depth_first(PCIBus *bus, pci_bus_ret_fn begin, 477 pci_bus_fn end, void *parent_state); 478 PCIDevice *pci_get_function_0(PCIDevice *pci_dev); 479 480 /* Use this wrapper when specific scan order is not required. */ 481 static inline 482 void pci_for_each_bus(PCIBus *bus, pci_bus_fn fn, void *opaque) 483 { 484 pci_for_each_bus_depth_first(bus, NULL, fn, opaque); 485 } 486 487 PCIBus *pci_device_root_bus(const PCIDevice *d); 488 const char *pci_root_bus_path(PCIDevice *dev); 489 bool pci_bus_bypass_iommu(PCIBus *bus); 490 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); 491 int pci_qdev_find_device(const char *id, PCIDevice **pdev); 492 void pci_bus_get_w64_range(PCIBus *bus, Range *range); 493 494 void pci_device_deassert_intx(PCIDevice *dev); 495 496 typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); 497 498 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); 499 void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); 500 501 static inline void 502 pci_set_byte(uint8_t *config, uint8_t val) 503 { 504 *config = val; 505 } 506 507 static inline uint8_t 508 pci_get_byte(const uint8_t *config) 509 { 510 return *config; 511 } 512 513 static inline void 514 pci_set_word(uint8_t *config, uint16_t val) 515 { 516 stw_le_p(config, val); 517 } 518 519 static inline uint16_t 520 pci_get_word(const uint8_t *config) 521 { 522 return lduw_le_p(config); 523 } 524 525 static inline void 526 pci_set_long(uint8_t *config, uint32_t val) 527 { 528 stl_le_p(config, val); 529 } 530 531 static inline uint32_t 532 pci_get_long(const uint8_t *config) 533 { 534 return ldl_le_p(config); 535 } 536 537 /* 538 * PCI capabilities and/or their fields 539 * are generally DWORD aligned only so 540 * mechanism used by pci_set/get_quad() 541 * must be tolerant to unaligned pointers 542 * 543 */ 544 static inline void 545 pci_set_quad(uint8_t *config, uint64_t val) 546 { 547 stq_le_p(config, val); 548 } 549 550 static inline uint64_t 551 pci_get_quad(const uint8_t *config) 552 { 553 return ldq_le_p(config); 554 } 555 556 static inline void 557 pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val) 558 { 559 pci_set_word(&pci_config[PCI_VENDOR_ID], val); 560 } 561 562 static inline void 563 pci_config_set_device_id(uint8_t *pci_config, uint16_t val) 564 { 565 pci_set_word(&pci_config[PCI_DEVICE_ID], val); 566 } 567 568 static inline void 569 pci_config_set_revision(uint8_t *pci_config, uint8_t val) 570 { 571 pci_set_byte(&pci_config[PCI_REVISION_ID], val); 572 } 573 574 static inline void 575 pci_config_set_class(uint8_t *pci_config, uint16_t val) 576 { 577 pci_set_word(&pci_config[PCI_CLASS_DEVICE], val); 578 } 579 580 static inline void 581 pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val) 582 { 583 pci_set_byte(&pci_config[PCI_CLASS_PROG], val); 584 } 585 586 static inline void 587 pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val) 588 { 589 pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val); 590 } 591 592 /* 593 * helper functions to do bit mask operation on configuration space. 594 * Just to set bit, use test-and-set and discard returned value. 595 * Just to clear bit, use test-and-clear and discard returned value. 596 * NOTE: They aren't atomic. 597 */ 598 static inline uint8_t 599 pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask) 600 { 601 uint8_t val = pci_get_byte(config); 602 pci_set_byte(config, val & ~mask); 603 return val & mask; 604 } 605 606 static inline uint8_t 607 pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask) 608 { 609 uint8_t val = pci_get_byte(config); 610 pci_set_byte(config, val | mask); 611 return val & mask; 612 } 613 614 static inline uint16_t 615 pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask) 616 { 617 uint16_t val = pci_get_word(config); 618 pci_set_word(config, val & ~mask); 619 return val & mask; 620 } 621 622 static inline uint16_t 623 pci_word_test_and_set_mask(uint8_t *config, uint16_t mask) 624 { 625 uint16_t val = pci_get_word(config); 626 pci_set_word(config, val | mask); 627 return val & mask; 628 } 629 630 static inline uint32_t 631 pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask) 632 { 633 uint32_t val = pci_get_long(config); 634 pci_set_long(config, val & ~mask); 635 return val & mask; 636 } 637 638 static inline uint32_t 639 pci_long_test_and_set_mask(uint8_t *config, uint32_t mask) 640 { 641 uint32_t val = pci_get_long(config); 642 pci_set_long(config, val | mask); 643 return val & mask; 644 } 645 646 static inline uint64_t 647 pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask) 648 { 649 uint64_t val = pci_get_quad(config); 650 pci_set_quad(config, val & ~mask); 651 return val & mask; 652 } 653 654 static inline uint64_t 655 pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask) 656 { 657 uint64_t val = pci_get_quad(config); 658 pci_set_quad(config, val | mask); 659 return val & mask; 660 } 661 662 /* Access a register specified by a mask */ 663 static inline void 664 pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg) 665 { 666 uint8_t val = pci_get_byte(config); 667 uint8_t rval = reg << ctz32(mask); 668 pci_set_byte(config, (~mask & val) | (mask & rval)); 669 } 670 671 static inline uint8_t 672 pci_get_byte_by_mask(uint8_t *config, uint8_t mask) 673 { 674 uint8_t val = pci_get_byte(config); 675 return (val & mask) >> ctz32(mask); 676 } 677 678 static inline void 679 pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg) 680 { 681 uint16_t val = pci_get_word(config); 682 uint16_t rval = reg << ctz32(mask); 683 pci_set_word(config, (~mask & val) | (mask & rval)); 684 } 685 686 static inline uint16_t 687 pci_get_word_by_mask(uint8_t *config, uint16_t mask) 688 { 689 uint16_t val = pci_get_word(config); 690 return (val & mask) >> ctz32(mask); 691 } 692 693 static inline void 694 pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg) 695 { 696 uint32_t val = pci_get_long(config); 697 uint32_t rval = reg << ctz32(mask); 698 pci_set_long(config, (~mask & val) | (mask & rval)); 699 } 700 701 static inline uint32_t 702 pci_get_long_by_mask(uint8_t *config, uint32_t mask) 703 { 704 uint32_t val = pci_get_long(config); 705 return (val & mask) >> ctz32(mask); 706 } 707 708 static inline void 709 pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg) 710 { 711 uint64_t val = pci_get_quad(config); 712 uint64_t rval = reg << ctz32(mask); 713 pci_set_quad(config, (~mask & val) | (mask & rval)); 714 } 715 716 static inline uint64_t 717 pci_get_quad_by_mask(uint8_t *config, uint64_t mask) 718 { 719 uint64_t val = pci_get_quad(config); 720 return (val & mask) >> ctz32(mask); 721 } 722 723 PCIDevice *pci_new_multifunction(int devfn, bool multifunction, 724 const char *name); 725 PCIDevice *pci_new(int devfn, const char *name); 726 bool pci_realize_and_unref(PCIDevice *dev, PCIBus *bus, Error **errp); 727 728 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, 729 bool multifunction, 730 const char *name); 731 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name); 732 733 void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev); 734 735 qemu_irq pci_allocate_irq(PCIDevice *pci_dev); 736 void pci_set_irq(PCIDevice *pci_dev, int level); 737 738 static inline int pci_intx(PCIDevice *pci_dev) 739 { 740 return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1; 741 } 742 743 static inline void pci_irq_assert(PCIDevice *pci_dev) 744 { 745 pci_set_irq(pci_dev, 1); 746 } 747 748 static inline void pci_irq_deassert(PCIDevice *pci_dev) 749 { 750 pci_set_irq(pci_dev, 0); 751 } 752 753 /* 754 * FIXME: PCI does not work this way. 755 * All the callers to this method should be fixed. 756 */ 757 static inline void pci_irq_pulse(PCIDevice *pci_dev) 758 { 759 pci_irq_assert(pci_dev); 760 pci_irq_deassert(pci_dev); 761 } 762 763 static inline int pci_is_express(const PCIDevice *d) 764 { 765 return d->cap_present & QEMU_PCI_CAP_EXPRESS; 766 } 767 768 static inline int pci_is_express_downstream_port(const PCIDevice *d) 769 { 770 uint8_t type; 771 772 if (!pci_is_express(d) || !d->exp.exp_cap) { 773 return 0; 774 } 775 776 type = pcie_cap_get_type(d); 777 778 return type == PCI_EXP_TYPE_DOWNSTREAM || type == PCI_EXP_TYPE_ROOT_PORT; 779 } 780 781 static inline uint32_t pci_config_size(const PCIDevice *d) 782 { 783 return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE; 784 } 785 786 static inline uint16_t pci_get_bdf(PCIDevice *dev) 787 { 788 return PCI_BUILD_BDF(pci_bus_num(pci_get_bus(dev)), dev->devfn); 789 } 790 791 uint16_t pci_requester_id(PCIDevice *dev); 792 793 /* DMA access functions */ 794 static inline AddressSpace *pci_get_address_space(PCIDevice *dev) 795 { 796 return &dev->bus_master_as; 797 } 798 799 /** 800 * pci_dma_rw: Read from or write to an address space from PCI device. 801 * 802 * Return a MemTxResult indicating whether the operation succeeded 803 * or failed (eg unassigned memory, device rejected the transaction, 804 * IOMMU fault). 805 * 806 * @dev: #PCIDevice doing the memory access 807 * @addr: address within the #PCIDevice address space 808 * @buf: buffer with the data transferred 809 * @len: the number of bytes to read or write 810 * @dir: indicates the transfer direction 811 */ 812 static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr, 813 void *buf, dma_addr_t len, 814 DMADirection dir, MemTxAttrs attrs) 815 { 816 return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, 817 dir, attrs); 818 } 819 820 /** 821 * pci_dma_read: Read from an address space from PCI device. 822 * 823 * Return a MemTxResult indicating whether the operation succeeded 824 * or failed (eg unassigned memory, device rejected the transaction, 825 * IOMMU fault). Called within RCU critical section. 826 * 827 * @dev: #PCIDevice doing the memory access 828 * @addr: address within the #PCIDevice address space 829 * @buf: buffer with the data transferred 830 * @len: length of the data transferred 831 */ 832 static inline MemTxResult pci_dma_read(PCIDevice *dev, dma_addr_t addr, 833 void *buf, dma_addr_t len) 834 { 835 return pci_dma_rw(dev, addr, buf, len, 836 DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED); 837 } 838 839 /** 840 * pci_dma_write: Write to address space from PCI device. 841 * 842 * Return a MemTxResult indicating whether the operation succeeded 843 * or failed (eg unassigned memory, device rejected the transaction, 844 * IOMMU fault). 845 * 846 * @dev: #PCIDevice doing the memory access 847 * @addr: address within the #PCIDevice address space 848 * @buf: buffer with the data transferred 849 * @len: the number of bytes to write 850 */ 851 static inline MemTxResult pci_dma_write(PCIDevice *dev, dma_addr_t addr, 852 const void *buf, dma_addr_t len) 853 { 854 return pci_dma_rw(dev, addr, (void *) buf, len, 855 DMA_DIRECTION_FROM_DEVICE, MEMTXATTRS_UNSPECIFIED); 856 } 857 858 #define PCI_DMA_DEFINE_LDST(_l, _s, _bits) \ 859 static inline MemTxResult ld##_l##_pci_dma(PCIDevice *dev, \ 860 dma_addr_t addr, \ 861 uint##_bits##_t *val, \ 862 MemTxAttrs attrs) \ 863 { \ 864 return ld##_l##_dma(pci_get_address_space(dev), addr, val, attrs); \ 865 } \ 866 static inline MemTxResult st##_s##_pci_dma(PCIDevice *dev, \ 867 dma_addr_t addr, \ 868 uint##_bits##_t val, \ 869 MemTxAttrs attrs) \ 870 { \ 871 return st##_s##_dma(pci_get_address_space(dev), addr, val, attrs); \ 872 } 873 874 PCI_DMA_DEFINE_LDST(ub, b, 8); 875 PCI_DMA_DEFINE_LDST(uw_le, w_le, 16) 876 PCI_DMA_DEFINE_LDST(l_le, l_le, 32); 877 PCI_DMA_DEFINE_LDST(q_le, q_le, 64); 878 PCI_DMA_DEFINE_LDST(uw_be, w_be, 16) 879 PCI_DMA_DEFINE_LDST(l_be, l_be, 32); 880 PCI_DMA_DEFINE_LDST(q_be, q_be, 64); 881 882 #undef PCI_DMA_DEFINE_LDST 883 884 /** 885 * pci_dma_map: Map device PCI address space range into host virtual address 886 * @dev: #PCIDevice to be accessed 887 * @addr: address within that device's address space 888 * @plen: pointer to length of buffer; updated on return to indicate 889 * if only a subset of the requested range has been mapped 890 * @dir: indicates the transfer direction 891 * 892 * Return: A host pointer, or %NULL if the resources needed to 893 * perform the mapping are exhausted (in that case *@plen 894 * is set to zero). 895 */ 896 static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, 897 dma_addr_t *plen, DMADirection dir) 898 { 899 void *buf; 900 901 buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir, 902 MEMTXATTRS_UNSPECIFIED); 903 return buf; 904 } 905 906 static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len, 907 DMADirection dir, dma_addr_t access_len) 908 { 909 dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len); 910 } 911 912 static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev, 913 int alloc_hint) 914 { 915 qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev)); 916 } 917 918 extern const VMStateDescription vmstate_pci_device; 919 920 #define VMSTATE_PCI_DEVICE(_field, _state) { \ 921 .name = (stringify(_field)), \ 922 .size = sizeof(PCIDevice), \ 923 .vmsd = &vmstate_pci_device, \ 924 .flags = VMS_STRUCT, \ 925 .offset = vmstate_offset_value(_state, _field, PCIDevice), \ 926 } 927 928 #define VMSTATE_PCI_DEVICE_POINTER(_field, _state) { \ 929 .name = (stringify(_field)), \ 930 .size = sizeof(PCIDevice), \ 931 .vmsd = &vmstate_pci_device, \ 932 .flags = VMS_STRUCT|VMS_POINTER, \ 933 .offset = vmstate_offset_pointer(_state, _field, PCIDevice), \ 934 } 935 936 MSIMessage pci_get_msi_message(PCIDevice *dev, int vector); 937 void pci_set_power(PCIDevice *pci_dev, bool state); 938 939 #endif 940