qemu/include/hw/pci/pci.h
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   1#ifndef QEMU_PCI_H
   2#define QEMU_PCI_H
   3
   4#include "qemu-common.h"
   5
   6#include "hw/qdev.h"
   7#include "exec/memory.h"
   8#include "sysemu/dma.h"
   9
  10/* PCI includes legacy ISA access.  */
  11#include "hw/isa/isa.h"
  12
  13#include "hw/pci/pcie.h"
  14
  15/* PCI bus */
  16
  17#define PCI_DEVFN(slot, func)   ((((slot) & 0x1f) << 3) | ((func) & 0x07))
  18#define PCI_SLOT(devfn)         (((devfn) >> 3) & 0x1f)
  19#define PCI_FUNC(devfn)         ((devfn) & 0x07)
  20#define PCI_SLOT_MAX            32
  21#define PCI_FUNC_MAX            8
  22
  23/* Class, Vendor and Device IDs from Linux's pci_ids.h */
  24#include "hw/pci/pci_ids.h"
  25
  26/* QEMU-specific Vendor and Device ID definitions */
  27
  28/* IBM (0x1014) */
  29#define PCI_DEVICE_ID_IBM_440GX          0x027f
  30#define PCI_DEVICE_ID_IBM_OPENPIC2       0xffff
  31
  32/* Hitachi (0x1054) */
  33#define PCI_VENDOR_ID_HITACHI            0x1054
  34#define PCI_DEVICE_ID_HITACHI_SH7751R    0x350e
  35
  36/* Apple (0x106b) */
  37#define PCI_DEVICE_ID_APPLE_343S1201     0x0010
  38#define PCI_DEVICE_ID_APPLE_UNI_N_I_PCI  0x001e
  39#define PCI_DEVICE_ID_APPLE_UNI_N_PCI    0x001f
  40#define PCI_DEVICE_ID_APPLE_UNI_N_KEYL   0x0022
  41#define PCI_DEVICE_ID_APPLE_IPID_USB     0x003f
  42
  43/* Realtek (0x10ec) */
  44#define PCI_DEVICE_ID_REALTEK_8029       0x8029
  45
  46/* Xilinx (0x10ee) */
  47#define PCI_DEVICE_ID_XILINX_XC2VP30     0x0300
  48
  49/* Marvell (0x11ab) */
  50#define PCI_DEVICE_ID_MARVELL_GT6412X    0x4620
  51
  52/* QEMU/Bochs VGA (0x1234) */
  53#define PCI_VENDOR_ID_QEMU               0x1234
  54#define PCI_DEVICE_ID_QEMU_VGA           0x1111
  55
  56/* VMWare (0x15ad) */
  57#define PCI_VENDOR_ID_VMWARE             0x15ad
  58#define PCI_DEVICE_ID_VMWARE_SVGA2       0x0405
  59#define PCI_DEVICE_ID_VMWARE_SVGA        0x0710
  60#define PCI_DEVICE_ID_VMWARE_NET         0x0720
  61#define PCI_DEVICE_ID_VMWARE_SCSI        0x0730
  62#define PCI_DEVICE_ID_VMWARE_PVSCSI      0x07C0
  63#define PCI_DEVICE_ID_VMWARE_IDE         0x1729
  64#define PCI_DEVICE_ID_VMWARE_VMXNET3     0x07B0
  65
  66/* Intel (0x8086) */
  67#define PCI_DEVICE_ID_INTEL_82551IT      0x1209
  68#define PCI_DEVICE_ID_INTEL_82557        0x1229
  69#define PCI_DEVICE_ID_INTEL_82801IR      0x2922
  70
  71/* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */
  72#define PCI_VENDOR_ID_REDHAT_QUMRANET    0x1af4
  73#define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4
  74#define PCI_SUBDEVICE_ID_QEMU            0x1100
  75
  76#define PCI_DEVICE_ID_VIRTIO_NET         0x1000
  77#define PCI_DEVICE_ID_VIRTIO_BLOCK       0x1001
  78#define PCI_DEVICE_ID_VIRTIO_BALLOON     0x1002
  79#define PCI_DEVICE_ID_VIRTIO_CONSOLE     0x1003
  80#define PCI_DEVICE_ID_VIRTIO_SCSI        0x1004
  81#define PCI_DEVICE_ID_VIRTIO_RNG         0x1005
  82#define PCI_DEVICE_ID_VIRTIO_9P          0x1009
  83
  84#define PCI_VENDOR_ID_REDHAT             0x1b36
  85#define PCI_DEVICE_ID_REDHAT_BRIDGE      0x0001
  86#define PCI_DEVICE_ID_REDHAT_SERIAL      0x0002
  87#define PCI_DEVICE_ID_REDHAT_SERIAL2     0x0003
  88#define PCI_DEVICE_ID_REDHAT_SERIAL4     0x0004
  89#define PCI_DEVICE_ID_REDHAT_TEST        0x0005
  90#define PCI_DEVICE_ID_REDHAT_QXL         0x0100
  91
  92#define FMT_PCIBUS                      PRIx64
  93
  94typedef void PCIConfigWriteFunc(PCIDevice *pci_dev,
  95                                uint32_t address, uint32_t data, int len);
  96typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev,
  97                                   uint32_t address, int len);
  98typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
  99                                pcibus_t addr, pcibus_t size, int type);
 100typedef void PCIUnregisterFunc(PCIDevice *pci_dev);
 101
 102typedef struct PCIIORegion {
 103    pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
 104#define PCI_BAR_UNMAPPED (~(pcibus_t)0)
 105    pcibus_t size;
 106    uint8_t type;
 107    MemoryRegion *memory;
 108    MemoryRegion *address_space;
 109} PCIIORegion;
 110
 111#define PCI_ROM_SLOT 6
 112#define PCI_NUM_REGIONS 7
 113
 114enum {
 115    QEMU_PCI_VGA_MEM,
 116    QEMU_PCI_VGA_IO_LO,
 117    QEMU_PCI_VGA_IO_HI,
 118    QEMU_PCI_VGA_NUM_REGIONS,
 119};
 120
 121#define QEMU_PCI_VGA_MEM_BASE 0xa0000
 122#define QEMU_PCI_VGA_MEM_SIZE 0x20000
 123#define QEMU_PCI_VGA_IO_LO_BASE 0x3b0
 124#define QEMU_PCI_VGA_IO_LO_SIZE 0xc
 125#define QEMU_PCI_VGA_IO_HI_BASE 0x3c0
 126#define QEMU_PCI_VGA_IO_HI_SIZE 0x20
 127
 128#include "hw/pci/pci_regs.h"
 129
 130/* PCI HEADER_TYPE */
 131#define  PCI_HEADER_TYPE_MULTI_FUNCTION 0x80
 132
 133/* Size of the standard PCI config header */
 134#define PCI_CONFIG_HEADER_SIZE 0x40
 135/* Size of the standard PCI config space */
 136#define PCI_CONFIG_SPACE_SIZE 0x100
 137/* Size of the standart PCIe config space: 4KB */
 138#define PCIE_CONFIG_SPACE_SIZE  0x1000
 139
 140#define PCI_NUM_PINS 4 /* A-D */
 141
 142/* Bits in cap_present field. */
 143enum {
 144    QEMU_PCI_CAP_MSI = 0x1,
 145    QEMU_PCI_CAP_MSIX = 0x2,
 146    QEMU_PCI_CAP_EXPRESS = 0x4,
 147
 148    /* multifunction capable device */
 149#define QEMU_PCI_CAP_MULTIFUNCTION_BITNR        3
 150    QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR),
 151
 152    /* command register SERR bit enabled */
 153#define QEMU_PCI_CAP_SERR_BITNR 4
 154    QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR),
 155    /* Standard hot plug controller. */
 156#define QEMU_PCI_SHPC_BITNR 5
 157    QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR),
 158#define QEMU_PCI_SLOTID_BITNR 6
 159    QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR),
 160};
 161
 162#define TYPE_PCI_DEVICE "pci-device"
 163#define PCI_DEVICE(obj) \
 164     OBJECT_CHECK(PCIDevice, (obj), TYPE_PCI_DEVICE)
 165#define PCI_DEVICE_CLASS(klass) \
 166     OBJECT_CLASS_CHECK(PCIDeviceClass, (klass), TYPE_PCI_DEVICE)
 167#define PCI_DEVICE_GET_CLASS(obj) \
 168     OBJECT_GET_CLASS(PCIDeviceClass, (obj), TYPE_PCI_DEVICE)
 169
 170typedef struct PCIINTxRoute {
 171    enum {
 172        PCI_INTX_ENABLED,
 173        PCI_INTX_INVERTED,
 174        PCI_INTX_DISABLED,
 175    } mode;
 176    int irq;
 177} PCIINTxRoute;
 178
 179typedef struct PCIDeviceClass {
 180    DeviceClass parent_class;
 181
 182    int (*init)(PCIDevice *dev);
 183    PCIUnregisterFunc *exit;
 184    PCIConfigReadFunc *config_read;
 185    PCIConfigWriteFunc *config_write;
 186
 187    uint16_t vendor_id;
 188    uint16_t device_id;
 189    uint8_t revision;
 190    uint16_t class_id;
 191    uint16_t subsystem_vendor_id;       /* only for header type = 0 */
 192    uint16_t subsystem_id;              /* only for header type = 0 */
 193
 194    /*
 195     * pci-to-pci bridge or normal device.
 196     * This doesn't mean pci host switch.
 197     * When card bus bridge is supported, this would be enhanced.
 198     */
 199    int is_bridge;
 200
 201    /* pcie stuff */
 202    int is_express;   /* is this device pci express? */
 203
 204    /* device isn't hot-pluggable */
 205    int no_hotplug;
 206
 207    /* rom bar */
 208    const char *romfile;
 209} PCIDeviceClass;
 210
 211typedef void (*PCIINTxRoutingNotifier)(PCIDevice *dev);
 212typedef int (*MSIVectorUseNotifier)(PCIDevice *dev, unsigned int vector,
 213                                      MSIMessage msg);
 214typedef void (*MSIVectorReleaseNotifier)(PCIDevice *dev, unsigned int vector);
 215typedef void (*MSIVectorPollNotifier)(PCIDevice *dev,
 216                                      unsigned int vector_start,
 217                                      unsigned int vector_end);
 218
 219struct PCIDevice {
 220    DeviceState qdev;
 221
 222    /* PCI config space */
 223    uint8_t *config;
 224
 225    /* Used to enable config checks on load. Note that writable bits are
 226     * never checked even if set in cmask. */
 227    uint8_t *cmask;
 228
 229    /* Used to implement R/W bytes */
 230    uint8_t *wmask;
 231
 232    /* Used to implement RW1C(Write 1 to Clear) bytes */
 233    uint8_t *w1cmask;
 234
 235    /* Used to allocate config space for capabilities. */
 236    uint8_t *used;
 237
 238    /* the following fields are read only */
 239    PCIBus *bus;
 240    int32_t devfn;
 241    char name[64];
 242    PCIIORegion io_regions[PCI_NUM_REGIONS];
 243    AddressSpace bus_master_as;
 244    MemoryRegion bus_master_enable_region;
 245
 246    /* do not access the following fields */
 247    PCIConfigReadFunc *config_read;
 248    PCIConfigWriteFunc *config_write;
 249
 250    /* IRQ objects for the INTA-INTD pins.  */
 251    qemu_irq *irq;
 252
 253    /* Legacy PCI VGA regions */
 254    MemoryRegion *vga_regions[QEMU_PCI_VGA_NUM_REGIONS];
 255    bool has_vga;
 256
 257    /* Current IRQ levels.  Used internally by the generic PCI code.  */
 258    uint8_t irq_state;
 259
 260    /* Capability bits */
 261    uint32_t cap_present;
 262
 263    /* Offset of MSI-X capability in config space */
 264    uint8_t msix_cap;
 265
 266    /* MSI-X entries */
 267    int msix_entries_nr;
 268
 269    /* Space to store MSIX table & pending bit array */
 270    uint8_t *msix_table;
 271    uint8_t *msix_pba;
 272    /* MemoryRegion container for msix exclusive BAR setup */
 273    MemoryRegion msix_exclusive_bar;
 274    /* Memory Regions for MSIX table and pending bit entries. */
 275    MemoryRegion msix_table_mmio;
 276    MemoryRegion msix_pba_mmio;
 277    /* Reference-count for entries actually in use by driver. */
 278    unsigned *msix_entry_used;
 279    /* MSIX function mask set or MSIX disabled */
 280    bool msix_function_masked;
 281    /* Version id needed for VMState */
 282    int32_t version_id;
 283
 284    /* Offset of MSI capability in config space */
 285    uint8_t msi_cap;
 286
 287    /* PCI Express */
 288    PCIExpressDevice exp;
 289
 290    /* SHPC */
 291    SHPCDevice *shpc;
 292
 293    /* Location of option rom */
 294    char *romfile;
 295    bool has_rom;
 296    MemoryRegion rom;
 297    uint32_t rom_bar;
 298
 299    /* INTx routing notifier */
 300    PCIINTxRoutingNotifier intx_routing_notifier;
 301
 302    /* MSI-X notifiers */
 303    MSIVectorUseNotifier msix_vector_use_notifier;
 304    MSIVectorReleaseNotifier msix_vector_release_notifier;
 305    MSIVectorPollNotifier msix_vector_poll_notifier;
 306};
 307
 308void pci_register_bar(PCIDevice *pci_dev, int region_num,
 309                      uint8_t attr, MemoryRegion *memory);
 310void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem,
 311                      MemoryRegion *io_lo, MemoryRegion *io_hi);
 312void pci_unregister_vga(PCIDevice *pci_dev);
 313pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num);
 314
 315int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
 316                       uint8_t offset, uint8_t size);
 317
 318void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
 319
 320uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id);
 321
 322
 323uint32_t pci_default_read_config(PCIDevice *d,
 324                                 uint32_t address, int len);
 325void pci_default_write_config(PCIDevice *d,
 326                              uint32_t address, uint32_t val, int len);
 327void pci_device_save(PCIDevice *s, QEMUFile *f);
 328int pci_device_load(PCIDevice *s, QEMUFile *f);
 329MemoryRegion *pci_address_space(PCIDevice *dev);
 330MemoryRegion *pci_address_space_io(PCIDevice *dev);
 331
 332typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
 333typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
 334typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin);
 335
 336typedef enum {
 337    PCI_HOTPLUG_DISABLED,
 338    PCI_HOTPLUG_ENABLED,
 339    PCI_COLDPLUG_ENABLED,
 340} PCIHotplugState;
 341
 342typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev,
 343                              PCIHotplugState state);
 344
 345#define TYPE_PCI_BUS "PCI"
 346#define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS)
 347#define TYPE_PCIE_BUS "PCIE"
 348
 349bool pci_bus_is_express(PCIBus *bus);
 350bool pci_bus_is_root(PCIBus *bus);
 351void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
 352                         const char *name,
 353                         MemoryRegion *address_space_mem,
 354                         MemoryRegion *address_space_io,
 355                         uint8_t devfn_min, const char *typename);
 356PCIBus *pci_bus_new(DeviceState *parent, const char *name,
 357                    MemoryRegion *address_space_mem,
 358                    MemoryRegion *address_space_io,
 359                    uint8_t devfn_min, const char *typename);
 360void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
 361                  void *irq_opaque, int nirq);
 362int pci_bus_get_irq_level(PCIBus *bus, int irq_num);
 363void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev);
 364/* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */
 365int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin);
 366PCIBus *pci_register_bus(DeviceState *parent, const char *name,
 367                         pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
 368                         void *irq_opaque,
 369                         MemoryRegion *address_space_mem,
 370                         MemoryRegion *address_space_io,
 371                         uint8_t devfn_min, int nirq, const char *typename);
 372void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn);
 373PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin);
 374bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new);
 375void pci_bus_fire_intx_routing_notifier(PCIBus *bus);
 376void pci_device_set_intx_routing_notifier(PCIDevice *dev,
 377                                          PCIINTxRoutingNotifier notifier);
 378void pci_device_reset(PCIDevice *dev);
 379void pci_bus_reset(PCIBus *bus);
 380
 381PCIDevice *pci_nic_init(NICInfo *nd, PCIBus *rootbus,
 382                        const char *default_model,
 383                        const char *default_devaddr);
 384PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
 385                               const char *default_model,
 386                               const char *default_devaddr);
 387
 388PCIDevice *pci_vga_init(PCIBus *bus);
 389
 390int pci_bus_num(PCIBus *s);
 391void pci_for_each_device(PCIBus *bus, int bus_num,
 392                         void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque),
 393                         void *opaque);
 394PCIBus *pci_find_primary_bus(void);
 395PCIBus *pci_device_root_bus(const PCIDevice *d);
 396const char *pci_root_bus_path(PCIDevice *dev);
 397PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn);
 398int pci_qdev_find_device(const char *id, PCIDevice **pdev);
 399PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root, const char *devaddr);
 400
 401int pci_parse_devaddr(const char *addr, int *domp, int *busp,
 402                      unsigned int *slotp, unsigned int *funcp);
 403
 404void pci_device_deassert_intx(PCIDevice *dev);
 405
 406typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int);
 407
 408void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque);
 409
 410static inline void
 411pci_set_byte(uint8_t *config, uint8_t val)
 412{
 413    *config = val;
 414}
 415
 416static inline uint8_t
 417pci_get_byte(const uint8_t *config)
 418{
 419    return *config;
 420}
 421
 422static inline void
 423pci_set_word(uint8_t *config, uint16_t val)
 424{
 425    cpu_to_le16wu((uint16_t *)config, val);
 426}
 427
 428static inline uint16_t
 429pci_get_word(const uint8_t *config)
 430{
 431    return le16_to_cpupu((const uint16_t *)config);
 432}
 433
 434static inline void
 435pci_set_long(uint8_t *config, uint32_t val)
 436{
 437    cpu_to_le32wu((uint32_t *)config, val);
 438}
 439
 440static inline uint32_t
 441pci_get_long(const uint8_t *config)
 442{
 443    return le32_to_cpupu((const uint32_t *)config);
 444}
 445
 446static inline void
 447pci_set_quad(uint8_t *config, uint64_t val)
 448{
 449    cpu_to_le64w((uint64_t *)config, val);
 450}
 451
 452static inline uint64_t
 453pci_get_quad(const uint8_t *config)
 454{
 455    return le64_to_cpup((const uint64_t *)config);
 456}
 457
 458static inline void
 459pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val)
 460{
 461    pci_set_word(&pci_config[PCI_VENDOR_ID], val);
 462}
 463
 464static inline void
 465pci_config_set_device_id(uint8_t *pci_config, uint16_t val)
 466{
 467    pci_set_word(&pci_config[PCI_DEVICE_ID], val);
 468}
 469
 470static inline void
 471pci_config_set_revision(uint8_t *pci_config, uint8_t val)
 472{
 473    pci_set_byte(&pci_config[PCI_REVISION_ID], val);
 474}
 475
 476static inline void
 477pci_config_set_class(uint8_t *pci_config, uint16_t val)
 478{
 479    pci_set_word(&pci_config[PCI_CLASS_DEVICE], val);
 480}
 481
 482static inline void
 483pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val)
 484{
 485    pci_set_byte(&pci_config[PCI_CLASS_PROG], val);
 486}
 487
 488static inline void
 489pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val)
 490{
 491    pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val);
 492}
 493
 494/*
 495 * helper functions to do bit mask operation on configuration space.
 496 * Just to set bit, use test-and-set and discard returned value.
 497 * Just to clear bit, use test-and-clear and discard returned value.
 498 * NOTE: They aren't atomic.
 499 */
 500static inline uint8_t
 501pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask)
 502{
 503    uint8_t val = pci_get_byte(config);
 504    pci_set_byte(config, val & ~mask);
 505    return val & mask;
 506}
 507
 508static inline uint8_t
 509pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask)
 510{
 511    uint8_t val = pci_get_byte(config);
 512    pci_set_byte(config, val | mask);
 513    return val & mask;
 514}
 515
 516static inline uint16_t
 517pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask)
 518{
 519    uint16_t val = pci_get_word(config);
 520    pci_set_word(config, val & ~mask);
 521    return val & mask;
 522}
 523
 524static inline uint16_t
 525pci_word_test_and_set_mask(uint8_t *config, uint16_t mask)
 526{
 527    uint16_t val = pci_get_word(config);
 528    pci_set_word(config, val | mask);
 529    return val & mask;
 530}
 531
 532static inline uint32_t
 533pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask)
 534{
 535    uint32_t val = pci_get_long(config);
 536    pci_set_long(config, val & ~mask);
 537    return val & mask;
 538}
 539
 540static inline uint32_t
 541pci_long_test_and_set_mask(uint8_t *config, uint32_t mask)
 542{
 543    uint32_t val = pci_get_long(config);
 544    pci_set_long(config, val | mask);
 545    return val & mask;
 546}
 547
 548static inline uint64_t
 549pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask)
 550{
 551    uint64_t val = pci_get_quad(config);
 552    pci_set_quad(config, val & ~mask);
 553    return val & mask;
 554}
 555
 556static inline uint64_t
 557pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask)
 558{
 559    uint64_t val = pci_get_quad(config);
 560    pci_set_quad(config, val | mask);
 561    return val & mask;
 562}
 563
 564/* Access a register specified by a mask */
 565static inline void
 566pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg)
 567{
 568    uint8_t val = pci_get_byte(config);
 569    uint8_t rval = reg << (ffs(mask) - 1);
 570    pci_set_byte(config, (~mask & val) | (mask & rval));
 571}
 572
 573static inline uint8_t
 574pci_get_byte_by_mask(uint8_t *config, uint8_t mask)
 575{
 576    uint8_t val = pci_get_byte(config);
 577    return (val & mask) >> (ffs(mask) - 1);
 578}
 579
 580static inline void
 581pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg)
 582{
 583    uint16_t val = pci_get_word(config);
 584    uint16_t rval = reg << (ffs(mask) - 1);
 585    pci_set_word(config, (~mask & val) | (mask & rval));
 586}
 587
 588static inline uint16_t
 589pci_get_word_by_mask(uint8_t *config, uint16_t mask)
 590{
 591    uint16_t val = pci_get_word(config);
 592    return (val & mask) >> (ffs(mask) - 1);
 593}
 594
 595static inline void
 596pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg)
 597{
 598    uint32_t val = pci_get_long(config);
 599    uint32_t rval = reg << (ffs(mask) - 1);
 600    pci_set_long(config, (~mask & val) | (mask & rval));
 601}
 602
 603static inline uint32_t
 604pci_get_long_by_mask(uint8_t *config, uint32_t mask)
 605{
 606    uint32_t val = pci_get_long(config);
 607    return (val & mask) >> (ffs(mask) - 1);
 608}
 609
 610static inline void
 611pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg)
 612{
 613    uint64_t val = pci_get_quad(config);
 614    uint64_t rval = reg << (ffs(mask) - 1);
 615    pci_set_quad(config, (~mask & val) | (mask & rval));
 616}
 617
 618static inline uint64_t
 619pci_get_quad_by_mask(uint8_t *config, uint64_t mask)
 620{
 621    uint64_t val = pci_get_quad(config);
 622    return (val & mask) >> (ffs(mask) - 1);
 623}
 624
 625PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
 626                                    const char *name);
 627PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
 628                                           bool multifunction,
 629                                           const char *name);
 630PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name);
 631PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
 632
 633static inline int pci_is_express(const PCIDevice *d)
 634{
 635    return d->cap_present & QEMU_PCI_CAP_EXPRESS;
 636}
 637
 638static inline uint32_t pci_config_size(const PCIDevice *d)
 639{
 640    return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE;
 641}
 642
 643/* DMA access functions */
 644static inline AddressSpace *pci_get_address_space(PCIDevice *dev)
 645{
 646    return &dev->bus_master_as;
 647}
 648
 649static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr,
 650                             void *buf, dma_addr_t len, DMADirection dir)
 651{
 652    dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir);
 653    return 0;
 654}
 655
 656static inline int pci_dma_read(PCIDevice *dev, dma_addr_t addr,
 657                               void *buf, dma_addr_t len)
 658{
 659    return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE);
 660}
 661
 662static inline int pci_dma_write(PCIDevice *dev, dma_addr_t addr,
 663                                const void *buf, dma_addr_t len)
 664{
 665    return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEVICE);
 666}
 667
 668#define PCI_DMA_DEFINE_LDST(_l, _s, _bits)                              \
 669    static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev,      \
 670                                                   dma_addr_t addr)     \
 671    {                                                                   \
 672        return ld##_l##_dma(pci_get_address_space(dev), addr);          \
 673    }                                                                   \
 674    static inline void st##_s##_pci_dma(PCIDevice *dev,                 \
 675                                        dma_addr_t addr, uint##_bits##_t val) \
 676    {                                                                   \
 677        st##_s##_dma(pci_get_address_space(dev), addr, val);            \
 678    }
 679
 680PCI_DMA_DEFINE_LDST(ub, b, 8);
 681PCI_DMA_DEFINE_LDST(uw_le, w_le, 16)
 682PCI_DMA_DEFINE_LDST(l_le, l_le, 32);
 683PCI_DMA_DEFINE_LDST(q_le, q_le, 64);
 684PCI_DMA_DEFINE_LDST(uw_be, w_be, 16)
 685PCI_DMA_DEFINE_LDST(l_be, l_be, 32);
 686PCI_DMA_DEFINE_LDST(q_be, q_be, 64);
 687
 688#undef PCI_DMA_DEFINE_LDST
 689
 690static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr,
 691                                dma_addr_t *plen, DMADirection dir)
 692{
 693    void *buf;
 694
 695    buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir);
 696    return buf;
 697}
 698
 699static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len,
 700                                 DMADirection dir, dma_addr_t access_len)
 701{
 702    dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len);
 703}
 704
 705static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev,
 706                                       int alloc_hint)
 707{
 708    qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev));
 709}
 710
 711extern const VMStateDescription vmstate_pci_device;
 712
 713#define VMSTATE_PCI_DEVICE(_field, _state) {                         \
 714    .name       = (stringify(_field)),                               \
 715    .size       = sizeof(PCIDevice),                                 \
 716    .vmsd       = &vmstate_pci_device,                               \
 717    .flags      = VMS_STRUCT,                                        \
 718    .offset     = vmstate_offset_value(_state, _field, PCIDevice),   \
 719}
 720
 721#define VMSTATE_PCI_DEVICE_POINTER(_field, _state) {                 \
 722    .name       = (stringify(_field)),                               \
 723    .size       = sizeof(PCIDevice),                                 \
 724    .vmsd       = &vmstate_pci_device,                               \
 725    .flags      = VMS_STRUCT|VMS_POINTER,                            \
 726    .offset     = vmstate_offset_pointer(_state, _field, PCIDevice), \
 727}
 728
 729#endif
 730