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 "irq.h"
  14
  15 /* VM Load/Save */
  16
  17 /* This function writes a chunk of data to a file at the given position.
  18  * The pos argument can be ignored if the file is only being used for
  19  * streaming.  The handler should try to write all of the data it can.
  20  */
  21 typedef int (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
  22                                     int64_t pos, int size);
  23
  24 /* Read a chunk of data from a file at the given position.  The pos argument
  25  * can be ignored if the file is only be used for streaming.  The number of
  26  * bytes actually read should be returned.
  27  */
  28 typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
  29                                     int64_t pos, int size);
  30
  31 /* Close a file and return an error code */
  32 typedef int (QEMUFileCloseFunc)(void *opaque);
  33
  34 /* Called to determine if the file has exceeded it's bandwidth allocation.  The
  35  * bandwidth capping is a soft limit, not a hard limit.
  36  */
  37 typedef int (QEMUFileRateLimit)(void *opaque);
  38
  39 QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
  40                          QEMUFileGetBufferFunc *get_buffer,
  41                          QEMUFileCloseFunc *close,
  42                          QEMUFileRateLimit *rate_limit);
  43 QEMUFile *qemu_fopen(const char *filename, const char *mode);
  44 QEMUFile *qemu_fopen_socket(int fd);
  45 QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
  46 QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
  47 void qemu_fflush(QEMUFile *f);
  48 int qemu_fclose(QEMUFile *f);
  49 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
  50 void qemu_put_byte(QEMUFile *f, int v);
  51
  52 static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
  53 {
  54     qemu_put_byte(f, (int)v);
  55 }
  56
  57 #define qemu_put_sbyte qemu_put_byte
  58
  59 void qemu_put_be16(QEMUFile *f, unsigned int v);
  60 void qemu_put_be32(QEMUFile *f, unsigned int v);
  61 void qemu_put_be64(QEMUFile *f, uint64_t v);
  62 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size);
  63 int qemu_get_byte(QEMUFile *f);
  64
  65 static inline unsigned int qemu_get_ubyte(QEMUFile *f)
  66 {
  67     return (unsigned int)qemu_get_byte(f);
  68 }
  69
  70 #define qemu_get_sbyte qemu_get_byte
  71
  72 unsigned int qemu_get_be16(QEMUFile *f);
  73 unsigned int qemu_get_be32(QEMUFile *f);
  74 uint64_t qemu_get_be64(QEMUFile *f);
  75 int qemu_file_rate_limit(QEMUFile *f);
  76 int qemu_file_has_error(QEMUFile *f);
  77 void qemu_file_set_error(QEMUFile *f);
  78
  79 /* Try to send any outstanding data.  This function is useful when output is
  80  * halted due to rate limiting or EAGAIN errors occur as it can be used to
  81  * resume output. */
  82 void qemu_file_put_notify(QEMUFile *f);
  83
  84 static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv)
  85 {
  86     qemu_put_be64(f, *pv);
  87 }
  88
  89 static inline void qemu_put_be32s(QEMUFile *f, const uint32_t *pv)
  90 {
  91     qemu_put_be32(f, *pv);
  92 }
  93
  94 static inline void qemu_put_be16s(QEMUFile *f, const uint16_t *pv)
  95 {
  96     qemu_put_be16(f, *pv);
  97 }
  98
  99 static inline void qemu_put_8s(QEMUFile *f, const uint8_t *pv)
 100 {
 101     qemu_put_byte(f, *pv);
 102 }
 103
 104 static inline void qemu_get_be64s(QEMUFile *f, uint64_t *pv)
 105 {
 106     *pv = qemu_get_be64(f);
 107 }
 108
 109 static inline void qemu_get_be32s(QEMUFile *f, uint32_t *pv)
 110 {
 111     *pv = qemu_get_be32(f);
 112 }
 113
 114 static inline void qemu_get_be16s(QEMUFile *f, uint16_t *pv)
 115 {
 116     *pv = qemu_get_be16(f);
 117 }
 118
 119 static inline void qemu_get_8s(QEMUFile *f, uint8_t *pv)
 120 {
 121     *pv = qemu_get_byte(f);
 122 }
 123
 124 // Signed versions for type safety
 125 static inline void qemu_put_sbuffer(QEMUFile *f, const int8_t *buf, int size)
 126 {
 127     qemu_put_buffer(f, (const uint8_t *)buf, size);
 128 }
 129
 130 static inline void qemu_put_sbe16(QEMUFile *f, int v)
 131 {
 132     qemu_put_be16(f, (unsigned int)v);
 133 }
 134
 135 static inline void qemu_put_sbe32(QEMUFile *f, int v)
 136 {
 137     qemu_put_be32(f, (unsigned int)v);
 138 }
 139
 140 static inline void qemu_put_sbe64(QEMUFile *f, int64_t v)
 141 {
 142     qemu_put_be64(f, (uint64_t)v);
 143 }
 144
 145 static inline size_t qemu_get_sbuffer(QEMUFile *f, int8_t *buf, int size)
 146 {
 147     return qemu_get_buffer(f, (uint8_t *)buf, size);
 148 }
 149
 150 static inline int qemu_get_sbe16(QEMUFile *f)
 151 {
 152     return (int)qemu_get_be16(f);
 153 }
 154
 155 static inline int qemu_get_sbe32(QEMUFile *f)
 156 {
 157     return (int)qemu_get_be32(f);
 158 }
 159
 160 static inline int64_t qemu_get_sbe64(QEMUFile *f)
 161 {
 162     return (int64_t)qemu_get_be64(f);
 163 }
 164
 165 static inline void qemu_put_s8s(QEMUFile *f, const int8_t *pv)
 166 {
 167     qemu_put_8s(f, (const uint8_t *)pv);
 168 }
 169
 170 static inline void qemu_put_sbe16s(QEMUFile *f, const int16_t *pv)
 171 {
 172     qemu_put_be16s(f, (const uint16_t *)pv);
 173 }
 174
 175 static inline void qemu_put_sbe32s(QEMUFile *f, const int32_t *pv)
 176 {
 177     qemu_put_be32s(f, (const uint32_t *)pv);
 178 }
 179
 180 static inline void qemu_put_sbe64s(QEMUFile *f, const int64_t *pv)
 181 {
 182     qemu_put_be64s(f, (const uint64_t *)pv);
 183 }
 184
 185 static inline void qemu_get_s8s(QEMUFile *f, int8_t *pv)
 186 {
 187     qemu_get_8s(f, (uint8_t *)pv);
 188 }
 189
 190 static inline void qemu_get_sbe16s(QEMUFile *f, int16_t *pv)
 191 {
 192     qemu_get_be16s(f, (uint16_t *)pv);
 193 }
 194
 195 static inline void qemu_get_sbe32s(QEMUFile *f, int32_t *pv)
 196 {
 197     qemu_get_be32s(f, (uint32_t *)pv);
 198 }
 199
 200 static inline void qemu_get_sbe64s(QEMUFile *f, int64_t *pv)
 201 {
 202     qemu_get_be64s(f, (uint64_t *)pv);
 203 }
 204
 205 #ifdef NEED_CPU_H
 206 #if TARGET_LONG_BITS == 64
 207 #define qemu_put_betl qemu_put_be64
 208 #define qemu_get_betl qemu_get_be64
 209 #define qemu_put_betls qemu_put_be64s
 210 #define qemu_get_betls qemu_get_be64s
 211 #define qemu_put_sbetl qemu_put_sbe64
 212 #define qemu_get_sbetl qemu_get_sbe64
 213 #define qemu_put_sbetls qemu_put_sbe64s
 214 #define qemu_get_sbetls qemu_get_sbe64s
 215 #else
 216 #define qemu_put_betl qemu_put_be32
 217 #define qemu_get_betl qemu_get_be32
 218 #define qemu_put_betls qemu_put_be32s
 219 #define qemu_get_betls qemu_get_be32s
 220 #define qemu_put_sbetl qemu_put_sbe32
 221 #define qemu_get_sbetl qemu_get_sbe32
 222 #define qemu_put_sbetls qemu_put_sbe32s
 223 #define qemu_get_sbetls qemu_get_sbe32s
 224 #endif
 225 #endif
 226
 227 int64_t qemu_ftell(QEMUFile *f);
 228 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence);
 229
 230 typedef void SaveStateHandler(QEMUFile *f, void *opaque);
 231 typedef int SaveLiveStateHandler(QEMUFile *f, int stage, void *opaque);
 232 typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
 233
 234 int register_savevm(const char *idstr,
 235                     int instance_id,
 236                     int version_id,
 237                     SaveStateHandler *save_state,
 238                     LoadStateHandler *load_state,
 239                     void *opaque);
 240
 241 int register_savevm_live(const char *idstr,
 242                          int instance_id,
 243                          int version_id,
 244                          SaveLiveStateHandler *save_live_state,
 245                          SaveStateHandler *save_state,
 246                          LoadStateHandler *load_state,
 247                          void *opaque);
 248
 249 void unregister_savevm(const char *idstr, void *opaque);
 250
 251 typedef void QEMUResetHandler(void *opaque);
 252
 253 void qemu_register_reset(QEMUResetHandler *func, void *opaque);
 254
 255 /* handler to set the boot_device for a specific type of QEMUMachine */
 256 /* return 0 if success */
 257 typedef int QEMUBootSetHandler(void *opaque, const char *boot_device);
 258 void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque);
 259
 260 /* These should really be in isa.h, but are here to make pc.h happy.  */
 261 typedef void (IOPortWriteFunc)(void *opaque, uint32_t address, uint32_t data);
 262 typedef uint32_t (IOPortReadFunc)(void *opaque, uint32_t address);
 263
 264 #endif