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; 271 272 /* 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 uint32_t romsize; 348 bool has_rom; 349 MemoryRegion rom; 350 uint32_t rom_bar; 351 352 /* INTx routing notifier */ 353 PCIINTxRoutingNotifier intx_routing_notifier; 354 355 /* MSI-X notifiers */ 356 MSIVectorUseNotifier msix_vector_use_notifier; 357 MSIVectorReleaseNotifier msix_vector_release_notifier; 358 MSIVectorPollNotifier msix_vector_poll_notifier; 359 360 /* ID of standby device in net_failover pair */ 361 char *failover_pair_id; 362 uint32_t acpi_index; 363 }; 364 365 void pci_register_bar(PCIDevice *pci_dev, int region_num, 366 uint8_t attr, MemoryRegion *memory); 367 void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, 368 MemoryRegion *io_lo, MemoryRegion *io_hi); 369 void pci_unregister_vga(PCIDevice *pci_dev); 370 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num); 371 372 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, 373 uint8_t offset, uint8_t size, 374 Error **errp); 375 376 void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size); 377 378 uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id); 379 380 381 uint32_t pci_default_read_config(PCIDevice *d, 382 uint32_t address, int len); 383 void pci_default_write_config(PCIDevice *d, 384 uint32_t address, uint32_t val, int len); 385 void pci_device_save(PCIDevice *s, QEMUFile *f); 386 int pci_device_load(PCIDevice *s, QEMUFile *f); 387 MemoryRegion *pci_address_space(PCIDevice *dev); 388 MemoryRegion *pci_address_space_io(PCIDevice *dev); 389 390 /* 391 * Should not normally be used by devices. For use by sPAPR target 392 * where QEMU emulates firmware. 393 */ 394 int pci_bar(PCIDevice *d, int reg); 395 396 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level); 397 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num); 398 typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); 399 400 #define TYPE_PCI_BUS "PCI" 401 OBJECT_DECLARE_TYPE(PCIBus, PCIBusClass, PCI_BUS) 402 #define TYPE_PCIE_BUS "PCIE" 403 404 typedef void (*pci_bus_dev_fn)(PCIBus *b, PCIDevice *d, void *opaque); 405 typedef void (*pci_bus_fn)(PCIBus *b, void *opaque); 406 typedef void *(*pci_bus_ret_fn)(PCIBus *b, void *opaque); 407 408 bool pci_bus_is_express(PCIBus *bus); 409 410 void pci_root_bus_init(PCIBus *bus, size_t bus_size, DeviceState *parent, 411 const char *name, 412 MemoryRegion *address_space_mem, 413 MemoryRegion *address_space_io, 414 uint8_t devfn_min, const char *typename); 415 PCIBus *pci_root_bus_new(DeviceState *parent, const char *name, 416 MemoryRegion *address_space_mem, 417 MemoryRegion *address_space_io, 418 uint8_t devfn_min, const char *typename); 419 void pci_root_bus_cleanup(PCIBus *bus); 420 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 421 void *irq_opaque, int nirq); 422 void pci_bus_irqs_cleanup(PCIBus *bus); 423 int pci_bus_get_irq_level(PCIBus *bus, int irq_num); 424 /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ 425 static inline int pci_swizzle(int slot, int pin) 426 { 427 return (slot + pin) % PCI_NUM_PINS; 428 } 429 int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); 430 PCIBus *pci_register_root_bus(DeviceState *parent, const char *name, 431 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, 432 void *irq_opaque, 433 MemoryRegion *address_space_mem, 434 MemoryRegion *address_space_io, 435 uint8_t devfn_min, int nirq, 436 const char *typename); 437 void pci_unregister_root_bus(PCIBus *bus); 438 void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn); 439 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin); 440 bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new); 441 void pci_bus_fire_intx_routing_notifier(PCIBus *bus); 442 void pci_device_set_intx_routing_notifier(PCIDevice *dev, 443 PCIINTxRoutingNotifier notifier); 444 void pci_device_reset(PCIDevice *dev); 445 446 PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, 447 const char *default_model, 448 const char *default_devaddr); 449 450 PCIDevice *pci_vga_init(PCIBus *bus); 451 452 static inline PCIBus *pci_get_bus(const PCIDevice *dev) 453 { 454 return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); 455 } 456 int pci_bus_num(PCIBus *s); 457 void pci_bus_range(PCIBus *bus, int *min_bus, int *max_bus); 458 static inline int pci_dev_bus_num(const PCIDevice *dev) 459 { 460 return pci_bus_num(pci_get_bus(dev)); 461 } 462 463 int pci_bus_numa_node(PCIBus *bus); 464 void pci_for_each_device(PCIBus *bus, int bus_num, 465 pci_bus_dev_fn fn, 466 void *opaque); 467 void pci_for_each_device_reverse(PCIBus *bus, int bus_num, 468 pci_bus_dev_fn fn, 469 void *opaque); 470 void pci_for_each_device_under_bus(PCIBus *bus, 471 pci_bus_dev_fn fn, void *opaque); 472 void pci_for_each_device_under_bus_reverse(PCIBus *bus, 473 pci_bus_dev_fn fn, 474 void *opaque); 475 void pci_for_each_bus_depth_first(PCIBus *bus, pci_bus_ret_fn begin, 476 pci_bus_fn end, void *parent_state); 477 PCIDevice *pci_get_function_0(PCIDevice *pci_dev); 478 479 /* Use this wrapper when specific scan order is not required. */ 480 static inline 481 void pci_for_each_bus(PCIBus *bus, pci_bus_fn fn, void *opaque) 482 { 483 pci_for_each_bus_depth_first(bus, NULL, fn, opaque); 484 } 485 486 PCIBus *pci_device_root_bus(const PCIDevice *d); 487 const char *pci_root_bus_path(PCIDevice *dev); 488 bool pci_bus_bypass_iommu(PCIBus *bus); 489 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); 490 int pci_qdev_find_device(const char *id, PCIDevice **pdev); 491 void pci_bus_get_w64_range(PCIBus *bus, Range *range); 492 493 void pci_device_deassert_intx(PCIDevice *dev); 494 495 typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); 496 497 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); 498 void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); 499 500 static inline void 501 pci_set_byte(uint8_t *config, uint8_t val) 502 { 503 *config = val; 504 } 505 506 static inline uint8_t 507 pci_get_byte(const uint8_t *config) 508 { 509 return *config; 510 } 511 512 static inline void 513 pci_set_word(uint8_t *config, uint16_t val) 514 { 515 stw_le_p(config, val); 516 } 517 518 static inline uint16_t 519 pci_get_word(const uint8_t *config) 520 { 521 return lduw_le_p(config); 522 } 523 524 static inline void 525 pci_set_long(uint8_t *config, uint32_t val) 526 { 527 stl_le_p(config, val); 528 } 529 530 static inline uint32_t 531 pci_get_long(const uint8_t *config) 532 { 533 return ldl_le_p(config); 534 } 535 536 /* 537 * PCI capabilities and/or their fields 538 * are generally DWORD aligned only so 539 * mechanism used by pci_set/get_quad() 540 * must be tolerant to unaligned pointers 541 * 542 */ 543 static inline void 544 pci_set_quad(uint8_t *config, uint64_t val) 545 { 546 stq_le_p(config, val); 547 } 548 549 static inline uint64_t 550 pci_get_quad(const uint8_t *config) 551 { 552 return ldq_le_p(config); 553 } 554 555 static inline void 556 pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val) 557 { 558 pci_set_word(&pci_config[PCI_VENDOR_ID], val); 559 } 560 561 static inline void 562 pci_config_set_device_id(uint8_t *pci_config, uint16_t val) 563 { 564 pci_set_word(&pci_config[PCI_DEVICE_ID], val); 565 } 566 567 static inline void 568 pci_config_set_revision(uint8_t *pci_config, uint8_t val) 569 { 570 pci_set_byte(&pci_config[PCI_REVISION_ID], val); 571 } 572 573 static inline void 574 pci_config_set_class(uint8_t *pci_config, uint16_t val) 575 { 576 pci_set_word(&pci_config[PCI_CLASS_DEVICE], val); 577 } 578 579 static inline void 580 pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val) 581 { 582 pci_set_byte(&pci_config[PCI_CLASS_PROG], val); 583 } 584 585 static inline void 586 pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val) 587 { 588 pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val); 589 } 590 591 /* 592 * helper functions to do bit mask operation on configuration space. 593 * Just to set bit, use test-and-set and discard returned value. 594 * Just to clear bit, use test-and-clear and discard returned value. 595 * NOTE: They aren't atomic. 596 */ 597 static inline uint8_t 598 pci_byte_test_and_clear_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 uint8_t 606 pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask) 607 { 608 uint8_t val = pci_get_byte(config); 609 pci_set_byte(config, val | mask); 610 return val & mask; 611 } 612 613 static inline uint16_t 614 pci_word_test_and_clear_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 uint16_t 622 pci_word_test_and_set_mask(uint8_t *config, uint16_t mask) 623 { 624 uint16_t val = pci_get_word(config); 625 pci_set_word(config, val | mask); 626 return val & mask; 627 } 628 629 static inline uint32_t 630 pci_long_test_and_clear_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 uint32_t 638 pci_long_test_and_set_mask(uint8_t *config, uint32_t mask) 639 { 640 uint32_t val = pci_get_long(config); 641 pci_set_long(config, val | mask); 642 return val & mask; 643 } 644 645 static inline uint64_t 646 pci_quad_test_and_clear_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 static inline uint64_t 654 pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask) 655 { 656 uint64_t val = pci_get_quad(config); 657 pci_set_quad(config, val | mask); 658 return val & mask; 659 } 660 661 /* Access a register specified by a mask */ 662 static inline void 663 pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg) 664 { 665 uint8_t val = pci_get_byte(config); 666 uint8_t rval = reg << ctz32(mask); 667 pci_set_byte(config, (~mask & val) | (mask & rval)); 668 } 669 670 static inline uint8_t 671 pci_get_byte_by_mask(uint8_t *config, uint8_t mask) 672 { 673 uint8_t val = pci_get_byte(config); 674 return (val & mask) >> ctz32(mask); 675 } 676 677 static inline void 678 pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg) 679 { 680 uint16_t val = pci_get_word(config); 681 uint16_t rval = reg << ctz32(mask); 682 pci_set_word(config, (~mask & val) | (mask & rval)); 683 } 684 685 static inline uint16_t 686 pci_get_word_by_mask(uint8_t *config, uint16_t mask) 687 { 688 uint16_t val = pci_get_word(config); 689 return (val & mask) >> ctz32(mask); 690 } 691 692 static inline void 693 pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg) 694 { 695 uint32_t val = pci_get_long(config); 696 uint32_t rval = reg << ctz32(mask); 697 pci_set_long(config, (~mask & val) | (mask & rval)); 698 } 699 700 static inline uint32_t 701 pci_get_long_by_mask(uint8_t *config, uint32_t mask) 702 { 703 uint32_t val = pci_get_long(config); 704 return (val & mask) >> ctz32(mask); 705 } 706 707 static inline void 708 pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg) 709 { 710 uint64_t val = pci_get_quad(config); 711 uint64_t rval = reg << ctz32(mask); 712 pci_set_quad(config, (~mask & val) | (mask & rval)); 713 } 714 715 static inline uint64_t 716 pci_get_quad_by_mask(uint8_t *config, uint64_t mask) 717 { 718 uint64_t val = pci_get_quad(config); 719 return (val & mask) >> ctz32(mask); 720 } 721 722 PCIDevice *pci_new_multifunction(int devfn, bool multifunction, 723 const char *name); 724 PCIDevice *pci_new(int devfn, const char *name); 725 bool pci_realize_and_unref(PCIDevice *dev, PCIBus *bus, Error **errp); 726 727 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, 728 bool multifunction, 729 const char *name); 730 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name); 731 732 void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev); 733 734 qemu_irq pci_allocate_irq(PCIDevice *pci_dev); 735 void pci_set_irq(PCIDevice *pci_dev, int level); 736 737 static inline void pci_irq_assert(PCIDevice *pci_dev) 738 { 739 pci_set_irq(pci_dev, 1); 740 } 741 742 static inline void pci_irq_deassert(PCIDevice *pci_dev) 743 { 744 pci_set_irq(pci_dev, 0); 745 } 746 747 /* 748 * FIXME: PCI does not work this way. 749 * All the callers to this method should be fixed. 750 */ 751 static inline void pci_irq_pulse(PCIDevice *pci_dev) 752 { 753 pci_irq_assert(pci_dev); 754 pci_irq_deassert(pci_dev); 755 } 756 757 static inline int pci_is_express(const PCIDevice *d) 758 { 759 return d->cap_present & QEMU_PCI_CAP_EXPRESS; 760 } 761 762 static inline int pci_is_express_downstream_port(const PCIDevice *d) 763 { 764 uint8_t type; 765 766 if (!pci_is_express(d) || !d->exp.exp_cap) { 767 return 0; 768 } 769 770 type = pcie_cap_get_type(d); 771 772 return type == PCI_EXP_TYPE_DOWNSTREAM || type == PCI_EXP_TYPE_ROOT_PORT; 773 } 774 775 static inline uint32_t pci_config_size(const PCIDevice *d) 776 { 777 return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE; 778 } 779 780 static inline uint16_t pci_get_bdf(PCIDevice *dev) 781 { 782 return PCI_BUILD_BDF(pci_bus_num(pci_get_bus(dev)), dev->devfn); 783 } 784 785 uint16_t pci_requester_id(PCIDevice *dev); 786 787 /* DMA access functions */ 788 static inline AddressSpace *pci_get_address_space(PCIDevice *dev) 789 { 790 return &dev->bus_master_as; 791 } 792 793 /** 794 * pci_dma_rw: Read from or write to an address space from PCI device. 795 * 796 * Return a MemTxResult indicating whether the operation succeeded 797 * or failed (eg unassigned memory, device rejected the transaction, 798 * IOMMU fault). 799 * 800 * @dev: #PCIDevice doing the memory access 801 * @addr: address within the #PCIDevice address space 802 * @buf: buffer with the data transferred 803 * @len: the number of bytes to read or write 804 * @dir: indicates the transfer direction 805 */ 806 static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr, 807 void *buf, dma_addr_t len, 808 DMADirection dir) 809 { 810 return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); 811 } 812 813 /** 814 * pci_dma_read: Read from an address space from PCI device. 815 * 816 * Return a MemTxResult indicating whether the operation succeeded 817 * or failed (eg unassigned memory, device rejected the transaction, 818 * IOMMU fault). Called within RCU critical section. 819 * 820 * @dev: #PCIDevice doing the memory access 821 * @addr: address within the #PCIDevice address space 822 * @buf: buffer with the data transferred 823 * @len: length of the data transferred 824 */ 825 static inline MemTxResult pci_dma_read(PCIDevice *dev, dma_addr_t addr, 826 void *buf, dma_addr_t len) 827 { 828 return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE); 829 } 830 831 /** 832 * pci_dma_write: Write to address space from PCI device. 833 * 834 * Return a MemTxResult indicating whether the operation succeeded 835 * or failed (eg unassigned memory, device rejected the transaction, 836 * IOMMU fault). 837 * 838 * @dev: #PCIDevice doing the memory access 839 * @addr: address within the #PCIDevice address space 840 * @buf: buffer with the data transferred 841 * @len: the number of bytes to write 842 */ 843 static inline MemTxResult pci_dma_write(PCIDevice *dev, dma_addr_t addr, 844 const void *buf, dma_addr_t len) 845 { 846 return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEVICE); 847 } 848 849 #define PCI_DMA_DEFINE_LDST(_l, _s, _bits) \ 850 static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev, \ 851 dma_addr_t addr) \ 852 { \ 853 return ld##_l##_dma(pci_get_address_space(dev), addr); \ 854 } \ 855 static inline void st##_s##_pci_dma(PCIDevice *dev, \ 856 dma_addr_t addr, uint##_bits##_t val) \ 857 { \ 858 st##_s##_dma(pci_get_address_space(dev), addr, val); \ 859 } 860 861 PCI_DMA_DEFINE_LDST(ub, b, 8); 862 PCI_DMA_DEFINE_LDST(uw_le, w_le, 16) 863 PCI_DMA_DEFINE_LDST(l_le, l_le, 32); 864 PCI_DMA_DEFINE_LDST(q_le, q_le, 64); 865 PCI_DMA_DEFINE_LDST(uw_be, w_be, 16) 866 PCI_DMA_DEFINE_LDST(l_be, l_be, 32); 867 PCI_DMA_DEFINE_LDST(q_be, q_be, 64); 868 869 #undef PCI_DMA_DEFINE_LDST 870 871 static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, 872 dma_addr_t *plen, DMADirection dir) 873 { 874 void *buf; 875 876 buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir); 877 return buf; 878 } 879 880 static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len, 881 DMADirection dir, dma_addr_t access_len) 882 { 883 dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len); 884 } 885 886 static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev, 887 int alloc_hint) 888 { 889 qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev)); 890 } 891 892 extern const VMStateDescription vmstate_pci_device; 893 894 #define VMSTATE_PCI_DEVICE(_field, _state) { \ 895 .name = (stringify(_field)), \ 896 .size = sizeof(PCIDevice), \ 897 .vmsd = &vmstate_pci_device, \ 898 .flags = VMS_STRUCT, \ 899 .offset = vmstate_offset_value(_state, _field, PCIDevice), \ 900 } 901 902 #define VMSTATE_PCI_DEVICE_POINTER(_field, _state) { \ 903 .name = (stringify(_field)), \ 904 .size = sizeof(PCIDevice), \ 905 .vmsd = &vmstate_pci_device, \ 906 .flags = VMS_STRUCT|VMS_POINTER, \ 907 .offset = vmstate_offset_pointer(_state, _field, PCIDevice), \ 908 } 909 910 MSIMessage pci_get_msi_message(PCIDevice *dev, int vector); 911 912 #endif 913