hw/hw.h

   1 /* Declarations for use by hardware emulation.  */
   2 #ifndef QEMU_HW_H
   3 #define QEMU_HW_H
   4
   5 #include "qemu-common.h"
   6
   7 #if defined(TARGET_PHYS_ADDR_BITS) && !defined(NEED_CPU_H)
   8 #include "targphys.h"
   9 #include "poison.h"
  10 #include "cpu-common.h"
  11 #endif
  12
  13 #include "ioport.h"
  14 #include "irq.h"
  15
  16 /* VM Load/Save */
  17
  18 /* This function writes a chunk of data to a file at the given position.
  19  * The pos argument can be ignored if the file is only being used for
  20  * streaming.  The handler should try to write all of the data it can.
  21  */
  22 typedef int (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
  23                                     int64_t pos, int size);
  24
  25 /* Read a chunk of data from a file at the given position.  The pos argument
  26  * can be ignored if the file is only be used for streaming.  The number of
  27  * bytes actually read should be returned.
  28  */
  29 typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
  30                                     int64_t pos, int size);
  31
  32 /* Close a file and return an error code */
  33 typedef int (QEMUFileCloseFunc)(void *opaque);
  34
  35 /* Called to determine if the file has exceeded it's bandwidth allocation.  The
  36  * bandwidth capping is a soft limit, not a hard limit.
  37  */
  38 typedef int (QEMUFileRateLimit)(void *opaque);
  39
  40 /* Called to change the current bandwidth allocation. This function must return
  41  * the new actual bandwidth. It should be new_rate if everything goes ok, and
  42  * the old rate otherwise
  43  */
  44 typedef size_t (QEMUFileSetRateLimit)(void *opaque, size_t new_rate);
  45
  46 QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
  47                          QEMUFileGetBufferFunc *get_buffer,
  48                          QEMUFileCloseFunc *close,
  49                          QEMUFileRateLimit *rate_limit,
  50                          QEMUFileSetRateLimit *set_rate_limit);
  51 QEMUFile *qemu_fopen(const char *filename, const char *mode);
  52 QEMUFile *qemu_fdopen(int fd, const char *mode);
  53 QEMUFile *qemu_fopen_socket(int fd);
  54 QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
  55 QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
  56 int qemu_stdio_fd(QEMUFile *f);
  57 void qemu_fflush(QEMUFile *f);
  58 int qemu_fclose(QEMUFile *f);
  59 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
  60 void qemu_put_byte(QEMUFile *f, int v);
  61
  62 static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
  63 {
  64     qemu_put_byte(f, (int)v);
  65 }
  66
  67 #define qemu_put_sbyte qemu_put_byte
  68
  69 void qemu_put_be16(QEMUFile *f, unsigned int v);
  70 void qemu_put_be32(QEMUFile *f, unsigned int v);
  71 void qemu_put_be64(QEMUFile *f, uint64_t v);
  72 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size);
  73 int qemu_get_byte(QEMUFile *f);
  74
  75 static inline unsigned int qemu_get_ubyte(QEMUFile *f)
  76 {
  77     return (unsigned int)qemu_get_byte(f);
  78 }
  79
  80 #define qemu_get_sbyte qemu_get_byte
  81
  82 unsigned int qemu_get_be16(QEMUFile *f);
  83 unsigned int qemu_get_be32(QEMUFile *f);
  84 uint64_t qemu_get_be64(QEMUFile *f);
  85 int qemu_file_rate_limit(QEMUFile *f);
  86 size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate);
  87 int qemu_file_has_error(QEMUFile *f);
  88 void qemu_file_set_error(QEMUFile *f);
  89
  90 /* Try to send any outstanding data.  This function is useful when output is
  91  * halted due to rate limiting or EAGAIN errors occur as it can be used to
  92  * resume output. */
  93 void qemu_file_put_notify(QEMUFile *f);
  94
  95 static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv)
  96 {
  97     qemu_put_be64(f, *pv);
  98 }
  99
 100 static inline void qemu_put_be32s(QEMUFile *f, const uint32_t *pv)
 101 {
 102     qemu_put_be32(f, *pv);
 103 }
 104
 105 static inline void qemu_put_be16s(QEMUFile *f, const uint16_t *pv)
 106 {
 107     qemu_put_be16(f, *pv);
 108 }
 109
 110 static inline void qemu_put_8s(QEMUFile *f, const uint8_t *pv)
 111 {
 112     qemu_put_byte(f, *pv);
 113 }
 114
 115 static inline void qemu_get_be64s(QEMUFile *f, uint64_t *pv)
 116 {
 117     *pv = qemu_get_be64(f);
 118 }
 119
 120 static inline void qemu_get_be32s(QEMUFile *f, uint32_t *pv)
 121 {
 122     *pv = qemu_get_be32(f);
 123 }
 124
 125 static inline void qemu_get_be16s(QEMUFile *f, uint16_t *pv)
 126 {
 127     *pv = qemu_get_be16(f);
 128 }
 129
 130 static inline void qemu_get_8s(QEMUFile *f, uint8_t *pv)
 131 {
 132     *pv = qemu_get_byte(f);
 133 }
 134
 135 // Signed versions for type safety
 136 static inline void qemu_put_sbuffer(QEMUFile *f, const int8_t *buf, int size)
 137 {
 138     qemu_put_buffer(f, (const uint8_t *)buf, size);
 139 }
 140
 141 static inline void qemu_put_sbe16(QEMUFile *f, int v)
 142 {
 143     qemu_put_be16(f, (unsigned int)v);
 144 }
 145
 146 static inline void qemu_put_sbe32(QEMUFile *f, int v)
 147 {
 148     qemu_put_be32(f, (unsigned int)v);
 149 }
 150
 151 static inline void qemu_put_sbe64(QEMUFile *f, int64_t v)
 152 {
 153     qemu_put_be64(f, (uint64_t)v);
 154 }
 155
 156 static inline size_t qemu_get_sbuffer(QEMUFile *f, int8_t *buf, int size)
 157 {
 158     return qemu_get_buffer(f, (uint8_t *)buf, size);
 159 }
 160
 161 static inline int qemu_get_sbe16(QEMUFile *f)
 162 {
 163     return (int)qemu_get_be16(f);
 164 }
 165
 166 static inline int qemu_get_sbe32(QEMUFile *f)
 167 {
 168     return (int)qemu_get_be32(f);
 169 }
 170
 171 static inline int64_t qemu_get_sbe64(QEMUFile *f)
 172 {
 173     return (int64_t)qemu_get_be64(f);
 174 }
 175
 176 static inline void qemu_put_s8s(QEMUFile *f, const int8_t *pv)
 177 {
 178     qemu_put_8s(f, (const uint8_t *)pv);
 179 }
 180
 181 static inline void qemu_put_sbe16s(QEMUFile *f, const int16_t *pv)
 182 {
 183     qemu_put_be16s(f, (const uint16_t *)pv);
 184 }
 185
 186 static inline void qemu_put_sbe32s(QEMUFile *f, const int32_t *pv)
 187 {
 188     qemu_put_be32s(f, (const uint32_t *)pv);
 189 }
 190
 191 static inline void qemu_put_sbe64s(QEMUFile *f, const int64_t *pv)
 192 {
 193     qemu_put_be64s(f, (const uint64_t *)pv);
 194 }
 195
 196 static inline void qemu_get_s8s(QEMUFile *f, int8_t *pv)
 197 {
 198     qemu_get_8s(f, (uint8_t *)pv);
 199 }
 200
 201 static inline void qemu_get_sbe16s(QEMUFile *f, int16_t *pv)
 202 {
 203     qemu_get_be16s(f, (uint16_t *)pv);
 204 }
 205
 206 static inline void qemu_get_sbe32s(QEMUFile *f, int32_t *pv)
 207 {
 208     qemu_get_be32s(f, (uint32_t *)pv);
 209 }
 210
 211 static inline void qemu_get_sbe64s(QEMUFile *f, int64_t *pv)
 212 {
 213     qemu_get_be64s(f, (uint64_t *)pv);
 214 }
 215
 216 #ifdef NEED_CPU_H
 217 #if TARGET_LONG_BITS == 64
 218 #define qemu_put_betl qemu_put_be64
 219 #define qemu_get_betl qemu_get_be64
 220 #define qemu_put_betls qemu_put_be64s
 221 #define qemu_get_betls qemu_get_be64s
 222 #define qemu_put_sbetl qemu_put_sbe64
 223 #define qemu_get_sbetl qemu_get_sbe64
 224 #define qemu_put_sbetls qemu_put_sbe64s
 225 #define qemu_get_sbetls qemu_get_sbe64s
 226 #else
 227 #define qemu_put_betl qemu_put_be32
 228 #define qemu_get_betl qemu_get_be32
 229 #define qemu_put_betls qemu_put_be32s
 230 #define qemu_get_betls qemu_get_be32s
 231 #define qemu_put_sbetl qemu_put_sbe32
 232 #define qemu_get_sbetl qemu_get_sbe32
 233 #define qemu_put_sbetls qemu_put_sbe32s
 234 #define qemu_get_sbetls qemu_get_sbe32s
 235 #endif
 236 #endif
 237
 238 int64_t qemu_ftell(QEMUFile *f);
 239 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence);
 240
 241 typedef void SaveStateHandler(QEMUFile *f, void *opaque);
 242 typedef int SaveLiveStateHandler(QEMUFile *f, int stage, void *opaque);
 243 typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
 244
 245 int register_savevm(const char *idstr,
 246                     int instance_id,
 247                     int version_id,
 248                     SaveStateHandler *save_state,
 249                     LoadStateHandler *load_state,
 250                     void *opaque);
 251
 252 int register_savevm_live(const char *idstr,
 253                          int instance_id,
 254                          int version_id,
 255                          SaveLiveStateHandler *save_live_state,
 256                          SaveStateHandler *save_state,
 257                          LoadStateHandler *load_state,
 258                          void *opaque);
 259
 260 void unregister_savevm(const char *idstr, void *opaque);
 261
 262 typedef void QEMUResetHandler(void *opaque);
 263
 264 void qemu_register_reset(QEMUResetHandler *func, void *opaque);
 265 void qemu_unregister_reset(QEMUResetHandler *func, void *opaque);
 266
 267 /* handler to set the boot_device order for a specific type of QEMUMachine */
 268 /* return 0 if success */
 269 typedef int QEMUBootSetHandler(void *opaque, const char *boot_devices);
 270 void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque);
 271 int qemu_boot_set(const char *boot_devices);
 272
 273 typedef struct VMStateInfo VMStateInfo;
 274 typedef struct VMStateDescription VMStateDescription;
 275
 276 struct VMStateInfo {
 277     const char *name;
 278     int (*get)(QEMUFile *f, void *pv, size_t size);
 279     void (*put)(QEMUFile *f, const void *pv, size_t size);
 280 };
 281
 282 enum VMStateFlags {
 283     VMS_SINGLE  = 0x001,
 284     VMS_POINTER = 0x002,
 285     VMS_ARRAY   = 0x004,
 286     VMS_STRUCT  = 0x008,
 287     VMS_VARRAY  = 0x010,  /* Array with size in another field */
 288     VMS_BUFFER  = 0x020,  /* static sized buffer */
 289 };
 290
 291 typedef struct {
 292     const char *name;
 293     size_t offset;
 294     size_t size;
 295     int num;
 296     size_t num_offset;
 297     const VMStateInfo *info;
 298     enum VMStateFlags flags;
 299     const VMStateDescription *vmsd;
 300     int version_id;
 301 } VMStateField;
 302
 303 struct VMStateDescription {
 304     const char *name;
 305     int version_id;
 306     int minimum_version_id;
 307     int minimum_version_id_old;
 308     LoadStateHandler *load_state_old;
 309     int (*run_after_load)(void *opaque);
 310     VMStateField *fields;
 311 };
 312
 313 extern const VMStateInfo vmstate_info_int8;
 314 extern const VMStateInfo vmstate_info_int16;
 315 extern const VMStateInfo vmstate_info_int32;
 316 extern const VMStateInfo vmstate_info_int64;
 317
 318 extern const VMStateInfo vmstate_info_int32_equal;
 319 extern const VMStateInfo vmstate_info_int32_le;
 320
 321 extern const VMStateInfo vmstate_info_uint8;
 322 extern const VMStateInfo vmstate_info_uint16;
 323 extern const VMStateInfo vmstate_info_uint32;
 324 extern const VMStateInfo vmstate_info_uint64;
 325
 326 extern const VMStateInfo vmstate_info_timer;
 327 extern const VMStateInfo vmstate_info_ptimer;
 328 extern const VMStateInfo vmstate_info_buffer;
 329
 330 #define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
 331 #define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
 332
 333 #define VMSTATE_SINGLE(_field, _state, _version, _info, _type) {     \
 334     .name       = (stringify(_field)),                               \
 335     .version_id = (_version),                                        \
 336     .size       = sizeof(_type),                                     \
 337     .info       = &(_info),                                          \
 338     .flags      = VMS_SINGLE,                                        \
 339     .offset     = offsetof(_state, _field)                           \
 340             + type_check(_type,typeof_field(_state, _field))         \
 341 }
 342
 343 #define VMSTATE_POINTER(_field, _state, _version, _info, _type) {    \
 344     .name       = (stringify(_field)),                               \
 345     .version_id = (_version),                                        \
 346     .info       = &(_info),                                          \
 347     .size       = sizeof(_type),                                     \
 348     .flags      = VMS_SINGLE|VMS_POINTER,                            \
 349     .offset     = offsetof(_state, _field)                           \
 350             + type_check(_type,typeof_field(_state, _field))         \
 351 }
 352
 353 #define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
 354     .name       = (stringify(_field)),                               \
 355     .version_id = (_version),                                        \
 356     .num        = (_num),                                            \
 357     .info       = &(_info),                                          \
 358     .size       = sizeof(_type),                                     \
 359     .flags      = VMS_ARRAY,                                         \
 360     .offset     = offsetof(_state, _field)                           \
 361         + type_check_array(_type,typeof_field(_state, _field),_num)  \
 362 }
 363
 364 #define VMSTATE_VARRAY(_field, _state, _field_num, _version, _info, _type) {\
 365     .name       = (stringify(_field)),                               \
 366     .version_id = (_version),                                        \
 367     .num_offset = offsetof(_state, _field_num)                       \
 368         + type_check(int32_t,typeof_field(_state, _field_num)),      \
 369     .info       = &(_info),                                          \
 370     .size       = sizeof(_type),                                     \
 371     .flags      = VMS_VARRAY|VMS_POINTER,                            \
 372     .offset     = offsetof(_state, _field)                           \
 373         + type_check_pointer(_type,typeof_field(_state, _field))     \
 374 }
 375
 376 #define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) {     \
 377     .name       = (stringify(_field)),                               \
 378     .version_id = (_version),                                        \
 379     .vmsd       = &(_vmsd),                                          \
 380     .size       = sizeof(_type),                                     \
 381     .flags      = VMS_STRUCT,                                        \
 382     .offset     = offsetof(_state, _field)                           \
 383             + type_check(_type,typeof_field(_state, _field))         \
 384 }
 385
 386 #define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) { \
 387     .name       = (stringify(_field)),                               \
 388     .num        = (_num),                                            \
 389     .version_id = (_version),                                        \
 390     .vmsd       = &(_vmsd),                                          \
 391     .size       = sizeof(_type),                                     \
 392     .flags      = VMS_STRUCT|VMS_ARRAY,                              \
 393     .offset     = offsetof(_state, _field)                           \
 394         + type_check_array(_type,typeof_field(_state, _field),_num)  \
 395 }
 396
 397 #define VMSTATE_STATIC_BUFFER(_field, _state, _version) {            \
 398     .name       = (stringify(_field)),                               \
 399     .version_id = (_version),                                        \
 400     .size       = sizeof(typeof_field(_state,_field)),               \
 401     .info       = &vmstate_info_buffer,                              \
 402     .flags      = VMS_BUFFER,                                        \
 403     .offset     = offsetof(_state, _field)                           \
 404         + type_check_array(uint8_t,typeof_field(_state, _field),sizeof(typeof_field(_state,_field))) \
 405 }
 406
 407 extern const VMStateDescription vmstate_pci_device;
 408
 409 #define VMSTATE_PCI_DEVICE(_field, _state) {                         \
 410     .name       = (stringify(_field)),                               \
 411     .size       = sizeof(PCIDevice),                                 \
 412     .vmsd       = &vmstate_pci_device,                               \
 413     .flags      = VMS_STRUCT,                                        \
 414     .offset     = offsetof(_state, _field)                           \
 415             + type_check(PCIDevice,typeof_field(_state, _field))     \
 416 }
 417
 418 /* _f : field name
 419    _f_n : num of elements field_name
 420    _n : num of elements
 421    _s : struct state name
 422    _v : version
 423 */
 424
 425 #define VMSTATE_INT8_V(_f, _s, _v)                                    \
 426     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
 427 #define VMSTATE_INT16_V(_f, _s, _v)                                   \
 428     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
 429 #define VMSTATE_INT32_V(_f, _s, _v)                                   \
 430     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
 431 #define VMSTATE_INT64_V(_f, _s, _v)                                   \
 432     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
 433
 434 #define VMSTATE_UINT8_V(_f, _s, _v)                                   \
 435     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
 436 #define VMSTATE_UINT16_V(_f, _s, _v)                                  \
 437     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
 438 #define VMSTATE_UINT32_V(_f, _s, _v)                                  \
 439     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
 440 #define VMSTATE_UINT64_V(_f, _s, _v)                                  \
 441     VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
 442
 443 #define VMSTATE_INT8(_f, _s)                                          \
 444     VMSTATE_INT8_V(_f, _s, 0)
 445 #define VMSTATE_INT16(_f, _s)                                         \
 446     VMSTATE_INT16_V(_f, _s, 0)
 447 #define VMSTATE_INT32(_f, _s)                                         \
 448     VMSTATE_INT32_V(_f, _s, 0)
 449 #define VMSTATE_INT64(_f, _s)                                         \
 450     VMSTATE_INT64_V(_f, _s, 0)
 451
 452 #define VMSTATE_UINT8(_f, _s)                                         \
 453     VMSTATE_UINT8_V(_f, _s, 0)
 454 #define VMSTATE_UINT16(_f, _s)                                        \
 455     VMSTATE_UINT16_V(_f, _s, 0)
 456 #define VMSTATE_UINT32(_f, _s)                                        \
 457     VMSTATE_UINT32_V(_f, _s, 0)
 458 #define VMSTATE_UINT64(_f, _s)                                        \
 459     VMSTATE_UINT64_V(_f, _s, 0)
 460
 461 #define VMSTATE_INT32_EQUAL(_f, _s)                                   \
 462     VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t)
 463
 464 #define VMSTATE_INT32_LE(_f, _s)                                   \
 465     VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
 466
 467 #define VMSTATE_TIMER_V(_f, _s, _v)                                   \
 468     VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
 469
 470 #define VMSTATE_TIMER(_f, _s)                                         \
 471     VMSTATE_TIMER_V(_f, _s, 0)
 472
 473 #define VMSTATE_PTIMER_V(_f, _s, _v)                                  \
 474     VMSTATE_POINTER(_f, _s, _v, vmstate_info_ptimer, ptimer_state *)
 475
 476 #define VMSTATE_PTIMER(_f, _s)                                        \
 477     VMSTATE_PTIMER_V(_f, _s, 0)
 478
 479 #define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v)                        \
 480     VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
 481
 482 #define VMSTATE_UINT32_ARRAY(_f, _s, _n)                              \
 483     VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
 484
 485 #define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v)                         \
 486     VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
 487
 488 #define VMSTATE_INT32_ARRAY(_f, _s, _n)                               \
 489     VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0)
 490
 491 #define VMSTATE_INT32_VARRAY_V(_f, _s, _f_n, _v)                      \
 492     VMSTATE_VARRAY(_f, _s, _f_n, _v, vmstate_info_int32, int32_t)
 493
 494 #define VMSTATE_INT32_VARRAY(_f, _s, _f_n)                            \
 495     VMSTATE_INT32_VARRAY_V(_f, _s, _f_n, 0)
 496
 497 #define VMSTATE_BUFFER_V(_f, _s, _v)                                  \
 498     VMSTATE_STATIC_BUFFER(_f, _s, _v)
 499
 500 #define VMSTATE_BUFFER(_f, _s)                                        \
 501     VMSTATE_STATIC_BUFFER(_f, _s, 0)
 502
 503 #define VMSTATE_END_OF_LIST()                                         \
 504     {}
 505
 506 extern int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
 507                               void *opaque, int version_id);
 508 extern void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
 509                                const void *opaque);
 510 extern int vmstate_register(int instance_id, const VMStateDescription *vmsd,
 511                             void *base);
 512 void vmstate_unregister(const VMStateDescription *vmsd, void *opaque);
 513 #endif