hw/pci.h

   1 #ifndef QEMU_PCI_H
   2 #define QEMU_PCI_H
   3
   4 #include "qemu-common.h"
   5 #include "qobject.h"
   6
   7 #include "qdev.h"
   8 #include "memory.h"
   9
  10 /* PCI includes legacy ISA access.  */
  11 #include "isa.h"
  12
  13 #include "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 "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_IDE         0x1729
  63
  64 /* Intel (0x8086) */
  65 #define PCI_DEVICE_ID_INTEL_82551IT      0x1209
  66 #define PCI_DEVICE_ID_INTEL_82557        0x1229
  67 #define PCI_DEVICE_ID_INTEL_82801IR      0x2922
  68
  69 /* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */
  70 #define PCI_VENDOR_ID_REDHAT_QUMRANET    0x1af4
  71 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4
  72 #define PCI_SUBDEVICE_ID_QEMU            0x1100
  73
  74 #define PCI_DEVICE_ID_VIRTIO_NET         0x1000
  75 #define PCI_DEVICE_ID_VIRTIO_BLOCK       0x1001
  76 #define PCI_DEVICE_ID_VIRTIO_BALLOON     0x1002
  77 #define PCI_DEVICE_ID_VIRTIO_CONSOLE     0x1003
  78
  79 #define FMT_PCIBUS                      PRIx64
  80
  81 typedef void PCIConfigWriteFunc(PCIDevice *pci_dev,
  82                                 uint32_t address, uint32_t data, int len);
  83 typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev,
  84                                    uint32_t address, int len);
  85 typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
  86                                 pcibus_t addr, pcibus_t size, int type);
  87 typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
  88
  89 typedef struct PCIIORegion {
  90     pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
  91 #define PCI_BAR_UNMAPPED (~(pcibus_t)0)
  92     pcibus_t size;
  93     pcibus_t filtered_size;
  94     uint8_t type;
  95     MemoryRegion *memory;
  96     MemoryRegion *address_space;
  97 } PCIIORegion;
  98
  99 #define PCI_ROM_SLOT 6
 100 #define PCI_NUM_REGIONS 7
 101
 102 #include "pci_regs.h"
 103
 104 /* PCI HEADER_TYPE */
 105 #define  PCI_HEADER_TYPE_MULTI_FUNCTION 0x80
 106
 107 /* Size of the standard PCI config header */
 108 #define PCI_CONFIG_HEADER_SIZE 0x40
 109 /* Size of the standard PCI config space */
 110 #define PCI_CONFIG_SPACE_SIZE 0x100
 111 /* Size of the standart PCIe config space: 4KB */
 112 #define PCIE_CONFIG_SPACE_SIZE  0x1000
 113
 114 #define PCI_NUM_PINS 4 /* A-D */
 115
 116 /* Bits in cap_present field. */
 117 enum {
 118     QEMU_PCI_CAP_MSI = 0x1,
 119     QEMU_PCI_CAP_MSIX = 0x2,
 120     QEMU_PCI_CAP_EXPRESS = 0x4,
 121
 122     /* multifunction capable device */
 123 #define QEMU_PCI_CAP_MULTIFUNCTION_BITNR        3
 124     QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR),
 125
 126     /* command register SERR bit enabled */
 127 #define QEMU_PCI_CAP_SERR_BITNR 4
 128     QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR),
 129 };
 130
 131 struct PCIDevice {
 132     DeviceState qdev;
 133     /* PCI config space */
 134     uint8_t *config;
 135
 136     /* Used to enable config checks on load. Note that writable bits are
 137      * never checked even if set in cmask. */
 138     uint8_t *cmask;
 139
 140     /* Used to implement R/W bytes */
 141     uint8_t *wmask;
 142
 143     /* Used to implement RW1C(Write 1 to Clear) bytes */
 144     uint8_t *w1cmask;
 145
 146     /* Used to allocate config space for capabilities. */
 147     uint8_t *used;
 148
 149     /* the following fields are read only */
 150     PCIBus *bus;
 151     uint32_t devfn;
 152     char name[64];
 153     PCIIORegion io_regions[PCI_NUM_REGIONS];
 154
 155     /* do not access the following fields */
 156     PCIConfigReadFunc *config_read;
 157     PCIConfigWriteFunc *config_write;
 158
 159     /* IRQ objects for the INTA-INTD pins.  */
 160     qemu_irq *irq;
 161
 162     /* Current IRQ levels.  Used internally by the generic PCI code.  */
 163     uint8_t irq_state;
 164
 165     /* Capability bits */
 166     uint32_t cap_present;
 167
 168     /* Offset of MSI-X capability in config space */
 169     uint8_t msix_cap;
 170
 171     /* MSI-X entries */
 172     int msix_entries_nr;
 173
 174     /* Space to store MSIX table */
 175     uint8_t *msix_table_page;
 176     /* MMIO index used to map MSIX table and pending bit entries. */
 177     MemoryRegion msix_mmio;
 178     /* Reference-count for entries actually in use by driver. */
 179     unsigned *msix_entry_used;
 180     /* Region including the MSI-X table */
 181     uint32_t msix_bar_size;
 182     /* Version id needed for VMState */
 183     int32_t version_id;
 184
 185     /* Offset of MSI capability in config space */
 186     uint8_t msi_cap;
 187
 188     /* PCI Express */
 189     PCIExpressDevice exp;
 190
 191     /* Location of option rom */
 192     char *romfile;
 193     bool has_rom;
 194     MemoryRegion rom;
 195     uint32_t rom_bar;
 196 };
 197
 198 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
 199                                int instance_size, int devfn,
 200                                PCIConfigReadFunc *config_read,
 201                                PCIConfigWriteFunc *config_write);
 202
 203 void pci_register_bar(PCIDevice *pci_dev, int region_num,
 204                       uint8_t attr, MemoryRegion *memory);
 205 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num);
 206
 207 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
 208                        uint8_t offset, uint8_t size);
 209
 210 void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
 211
 212 void pci_reserve_capability(PCIDevice *pci_dev, uint8_t offset, uint8_t size);
 213
 214 uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id);
 215
 216
 217 uint32_t pci_default_read_config(PCIDevice *d,
 218                                  uint32_t address, int len);
 219 void pci_default_write_config(PCIDevice *d,
 220                               uint32_t address, uint32_t val, int len);
 221 void pci_device_save(PCIDevice *s, QEMUFile *f);
 222 int pci_device_load(PCIDevice *s, QEMUFile *f);
 223 MemoryRegion *pci_address_space(PCIDevice *dev);
 224
 225 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
 226 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
 227
 228 typedef enum {
 229     PCI_HOTPLUG_DISABLED,
 230     PCI_HOTPLUG_ENABLED,
 231     PCI_COLDPLUG_ENABLED,
 232 } PCIHotplugState;
 233
 234 typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev,
 235                               PCIHotplugState state);
 236 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
 237                          const char *name,
 238                          MemoryRegion *address_space_mem,
 239                          MemoryRegion *address_space_io,
 240                          uint8_t devfn_min);
 241 PCIBus *pci_bus_new(DeviceState *parent, const char *name,
 242                     MemoryRegion *address_space_mem,
 243                     MemoryRegion *address_space_io,
 244                     uint8_t devfn_min);
 245 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
 246                   void *irq_opaque, int nirq);
 247 int pci_bus_get_irq_level(PCIBus *bus, int irq_num);
 248 void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev);
 249 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
 250                          pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
 251                          void *irq_opaque,
 252                          MemoryRegion *address_space_mem,
 253                          MemoryRegion *address_space_io,
 254                          uint8_t devfn_min, int nirq);
 255 void pci_device_reset(PCIDevice *dev);
 256 void pci_bus_reset(PCIBus *bus);
 257
 258 PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,
 259                         const char *default_devaddr);
 260 PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model,
 261                                const char *default_devaddr);
 262 int pci_bus_num(PCIBus *s);
 263 void pci_for_each_device(PCIBus *bus, int bus_num, void (*fn)(PCIBus *bus, PCIDevice *d));
 264 PCIBus *pci_find_root_bus(int domain);
 265 int pci_find_domain(const PCIBus *bus);
 266 PCIBus *pci_find_bus(PCIBus *bus, int bus_num);
 267 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn);
 268 int pci_qdev_find_device(const char *id, PCIDevice **pdev);
 269 PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr);
 270
 271 int pci_parse_devaddr(const char *addr, int *domp, int *busp,
 272                       unsigned int *slotp, unsigned int *funcp);
 273 int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp,
 274                      unsigned *slotp);
 275
 276 void do_pci_info_print(Monitor *mon, const QObject *data);
 277 void do_pci_info(Monitor *mon, QObject **ret_data);
 278 void pci_bridge_update_mappings(PCIBus *b);
 279
 280 void pci_device_deassert_intx(PCIDevice *dev);
 281
 282 static inline void
 283 pci_set_byte(uint8_t *config, uint8_t val)
 284 {
 285     *config = val;
 286 }
 287
 288 static inline uint8_t
 289 pci_get_byte(const uint8_t *config)
 290 {
 291     return *config;
 292 }
 293
 294 static inline void
 295 pci_set_word(uint8_t *config, uint16_t val)
 296 {
 297     cpu_to_le16wu((uint16_t *)config, val);
 298 }
 299
 300 static inline uint16_t
 301 pci_get_word(const uint8_t *config)
 302 {
 303     return le16_to_cpupu((const uint16_t *)config);
 304 }
 305
 306 static inline void
 307 pci_set_long(uint8_t *config, uint32_t val)
 308 {
 309     cpu_to_le32wu((uint32_t *)config, val);
 310 }
 311
 312 static inline uint32_t
 313 pci_get_long(const uint8_t *config)
 314 {
 315     return le32_to_cpupu((const uint32_t *)config);
 316 }
 317
 318 static inline void
 319 pci_set_quad(uint8_t *config, uint64_t val)
 320 {
 321     cpu_to_le64w((uint64_t *)config, val);
 322 }
 323
 324 static inline uint64_t
 325 pci_get_quad(const uint8_t *config)
 326 {
 327     return le64_to_cpup((const uint64_t *)config);
 328 }
 329
 330 static inline void
 331 pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val)
 332 {
 333     pci_set_word(&pci_config[PCI_VENDOR_ID], val);
 334 }
 335
 336 static inline void
 337 pci_config_set_device_id(uint8_t *pci_config, uint16_t val)
 338 {
 339     pci_set_word(&pci_config[PCI_DEVICE_ID], val);
 340 }
 341
 342 static inline void
 343 pci_config_set_revision(uint8_t *pci_config, uint8_t val)
 344 {
 345     pci_set_byte(&pci_config[PCI_REVISION_ID], val);
 346 }
 347
 348 static inline void
 349 pci_config_set_class(uint8_t *pci_config, uint16_t val)
 350 {
 351     pci_set_word(&pci_config[PCI_CLASS_DEVICE], val);
 352 }
 353
 354 static inline void
 355 pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val)
 356 {
 357     pci_set_byte(&pci_config[PCI_CLASS_PROG], val);
 358 }
 359
 360 static inline void
 361 pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val)
 362 {
 363     pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val);
 364 }
 365
 366 /*
 367  * helper functions to do bit mask operation on configuration space.
 368  * Just to set bit, use test-and-set and discard returned value.
 369  * Just to clear bit, use test-and-clear and discard returned value.
 370  * NOTE: They aren't atomic.
 371  */
 372 static inline uint8_t
 373 pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask)
 374 {
 375     uint8_t val = pci_get_byte(config);
 376     pci_set_byte(config, val & ~mask);
 377     return val & mask;
 378 }
 379
 380 static inline uint8_t
 381 pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask)
 382 {
 383     uint8_t val = pci_get_byte(config);
 384     pci_set_byte(config, val | mask);
 385     return val & mask;
 386 }
 387
 388 static inline uint16_t
 389 pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask)
 390 {
 391     uint16_t val = pci_get_word(config);
 392     pci_set_word(config, val & ~mask);
 393     return val & mask;
 394 }
 395
 396 static inline uint16_t
 397 pci_word_test_and_set_mask(uint8_t *config, uint16_t mask)
 398 {
 399     uint16_t val = pci_get_word(config);
 400     pci_set_word(config, val | mask);
 401     return val & mask;
 402 }
 403
 404 static inline uint32_t
 405 pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask)
 406 {
 407     uint32_t val = pci_get_long(config);
 408     pci_set_long(config, val & ~mask);
 409     return val & mask;
 410 }
 411
 412 static inline uint32_t
 413 pci_long_test_and_set_mask(uint8_t *config, uint32_t mask)
 414 {
 415     uint32_t val = pci_get_long(config);
 416     pci_set_long(config, val | mask);
 417     return val & mask;
 418 }
 419
 420 static inline uint64_t
 421 pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask)
 422 {
 423     uint64_t val = pci_get_quad(config);
 424     pci_set_quad(config, val & ~mask);
 425     return val & mask;
 426 }
 427
 428 static inline uint64_t
 429 pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask)
 430 {
 431     uint64_t val = pci_get_quad(config);
 432     pci_set_quad(config, val | mask);
 433     return val & mask;
 434 }
 435
 436 typedef int (*pci_qdev_initfn)(PCIDevice *dev);
 437 typedef struct {
 438     DeviceInfo qdev;
 439     pci_qdev_initfn init;
 440     PCIUnregisterFunc *exit;
 441     PCIConfigReadFunc *config_read;
 442     PCIConfigWriteFunc *config_write;
 443
 444     uint16_t vendor_id;
 445     uint16_t device_id;
 446     uint8_t revision;
 447     uint16_t class_id;
 448     uint16_t subsystem_vendor_id;       /* only for header type = 0 */
 449     uint16_t subsystem_id;              /* only for header type = 0 */
 450
 451     /*
 452      * pci-to-pci bridge or normal device.
 453      * This doesn't mean pci host switch.
 454      * When card bus bridge is supported, this would be enhanced.
 455      */
 456     int is_bridge;
 457
 458     /* pcie stuff */
 459     int is_express;   /* is this device pci express? */
 460
 461     /* device isn't hot-pluggable */
 462     int no_hotplug;
 463
 464     /* rom bar */
 465     const char *romfile;
 466 } PCIDeviceInfo;
 467
 468 void pci_qdev_register(PCIDeviceInfo *info);
 469 void pci_qdev_register_many(PCIDeviceInfo *info);
 470
 471 PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
 472                                     const char *name);
 473 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
 474                                            bool multifunction,
 475                                            const char *name);
 476 PCIDevice *pci_try_create_multifunction(PCIBus *bus, int devfn,
 477                                         bool multifunction,
 478                                         const char *name);
 479 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name);
 480 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
 481 PCIDevice *pci_try_create(PCIBus *bus, int devfn, const char *name);
 482
 483 static inline int pci_is_express(const PCIDevice *d)
 484 {
 485     return d->cap_present & QEMU_PCI_CAP_EXPRESS;
 486 }
 487
 488 static inline uint32_t pci_config_size(const PCIDevice *d)
 489 {
 490     return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE;
 491 }
 492
 493 #endif