include/hw/ide/internal.h

   1 #ifndef HW_IDE_INTERNAL_H
   2 #define HW_IDE_INTERNAL_H
   3
   4 /*
   5  * QEMU IDE Emulation -- internal header file
   6  * only files in hw/ide/ are supposed to include this file.
   7  * non-internal declarations are in hw/ide.h
   8  */
   9 #include "hw/ide.h"
  10 #include "hw/isa/isa.h"
  11 #include "sysemu/dma.h"
  12 #include "sysemu/sysemu.h"
  13 #include "hw/block/block.h"
  14 #include "block/scsi.h"
  15
  16 /* debug IDE devices */
  17 //#define DEBUG_IDE
  18 //#define DEBUG_IDE_ATAPI
  19 //#define DEBUG_AIO
  20 #define USE_DMA_CDROM
  21
  22 typedef struct IDEBus IDEBus;
  23 typedef struct IDEDevice IDEDevice;
  24 typedef struct IDEState IDEState;
  25 typedef struct IDEDMA IDEDMA;
  26 typedef struct IDEDMAOps IDEDMAOps;
  27
  28 #define TYPE_IDE_BUS "IDE"
  29 #define IDE_BUS(obj) OBJECT_CHECK(IDEBus, (obj), TYPE_IDE_BUS)
  30
  31 /* Bits of HD_STATUS */
  32 #define ERR_STAT                0x01
  33 #define INDEX_STAT              0x02
  34 #define ECC_STAT                0x04    /* Corrected error */
  35 #define DRQ_STAT                0x08
  36 #define SEEK_STAT               0x10
  37 #define SRV_STAT                0x10
  38 #define WRERR_STAT              0x20
  39 #define READY_STAT              0x40
  40 #define BUSY_STAT               0x80
  41
  42 /* Bits for HD_ERROR */
  43 #define MARK_ERR                0x01    /* Bad address mark */
  44 #define TRK0_ERR                0x02    /* couldn't find track 0 */
  45 #define ABRT_ERR                0x04    /* Command aborted */
  46 #define MCR_ERR                 0x08    /* media change request */
  47 #define ID_ERR                  0x10    /* ID field not found */
  48 #define MC_ERR                  0x20    /* media changed */
  49 #define ECC_ERR                 0x40    /* Uncorrectable ECC error */
  50 #define BBD_ERR                 0x80    /* pre-EIDE meaning:  block marked bad */
  51 #define ICRC_ERR                0x80    /* new meaning:  CRC error during transfer */
  52
  53 /* Bits of HD_NSECTOR */
  54 #define CD                      0x01
  55 #define IO                      0x02
  56 #define REL                     0x04
  57 #define TAG_MASK                0xf8
  58
  59 #define IDE_CMD_RESET           0x04
  60 #define IDE_CMD_DISABLE_IRQ     0x02
  61
  62 /* ACS-2 T13/2015-D Table B.2 Command codes */
  63 #define WIN_NOP                         0x00
  64 /* reserved                             0x01..0x02 */
  65 #define CFA_REQ_EXT_ERROR_CODE          0x03 /* CFA Request Extended Error Code */
  66 /* reserved                             0x04..0x05 */
  67 #define WIN_DSM                         0x06
  68 /* reserved                             0x07 */
  69 #define WIN_DEVICE_RESET                0x08
  70 /* reserved                             0x09..0x0a */
  71 /* REQUEST SENSE DATA EXT               0x0B */
  72 /* reserved                             0x0C..0x0F */
  73 #define WIN_RECAL                       0x10 /* obsolete since ATA4 */
  74 /* obsolete since ATA3, retired in ATA4 0x11..0x1F */
  75 #define WIN_READ                        0x20 /* 28-Bit */
  76 #define WIN_READ_ONCE                   0x21 /* 28-Bit w/o retries, obsolete since ATA5 */
  77 /* obsolete since ATA4                  0x22..0x23 */
  78 #define WIN_READ_EXT                    0x24 /* 48-Bit */
  79 #define WIN_READDMA_EXT                 0x25 /* 48-Bit */
  80 #define WIN_READDMA_QUEUED_EXT          0x26 /* 48-Bit, obsolete since ACS2 */
  81 #define WIN_READ_NATIVE_MAX_EXT         0x27 /* 48-Bit */
  82 /* reserved                             0x28 */
  83 #define WIN_MULTREAD_EXT                0x29 /* 48-Bit */
  84 /* READ STREAM DMA EXT                  0x2A */
  85 /* READ STREAM EXT                      0x2B */
  86 /* reserved                             0x2C..0x2E */
  87 /* READ LOG EXT                         0x2F */
  88 #define WIN_WRITE                       0x30 /* 28-Bit */
  89 #define WIN_WRITE_ONCE                  0x31 /* 28-Bit w/o retries, obsolete since ATA5 */
  90 /* obsolete since ATA4                  0x32..0x33 */
  91 #define WIN_WRITE_EXT                   0x34 /* 48-Bit */
  92 #define WIN_WRITEDMA_EXT                0x35 /* 48-Bit */
  93 #define WIN_WRITEDMA_QUEUED_EXT         0x36 /* 48-Bit */
  94 #define WIN_SET_MAX_EXT                 0x37 /* 48-Bit, obsolete since ACS2 */
  95 #define WIN_SET_MAX_EXT                 0x37 /* 48-Bit */
  96 #define CFA_WRITE_SECT_WO_ERASE         0x38 /* CFA Write Sectors without erase */
  97 #define WIN_MULTWRITE_EXT               0x39 /* 48-Bit */
  98 /* WRITE STREAM DMA EXT                 0x3A */
  99 /* WRITE STREAM EXT                     0x3B */
 100 #define WIN_WRITE_VERIFY                0x3C /* 28-Bit, obsolete since ATA4 */
 101 /* WRITE DMA FUA EXT                    0x3D */
 102 /* obsolete since ACS2                  0x3E */
 103 /* WRITE LOG EXT                        0x3F */
 104 #define WIN_VERIFY                      0x40 /* 28-Bit - Read Verify Sectors */
 105 #define WIN_VERIFY_ONCE                 0x41 /* 28-Bit - w/o retries, obsolete since ATA5 */
 106 #define WIN_VERIFY_EXT                  0x42 /* 48-Bit */
 107 /* reserved                             0x43..0x44 */
 108 /* WRITE UNCORRECTABLE EXT              0x45 */
 109 /* reserved                             0x46 */
 110 /* READ LOG DMA EXT                     0x47 */
 111 /* reserved                             0x48..0x4F */
 112 /* obsolete since ATA4                  0x50 */
 113 /* CONFIGURE STREAM                     0x51 */
 114 /* reserved                             0x52..0x56 */
 115 /* WRITE LOG DMA EXT                    0x57 */
 116 /* reserved                             0x58..0x5A */
 117 /* TRUSTED NON DATA                     0x5B */
 118 /* TRUSTED RECEIVE                      0x5C */
 119 /* TRUSTED RECEIVE DMA                  0x5D */
 120 /* TRUSTED SEND                         0x5E */
 121 /* TRUSTED SEND DMA                     0x5F */
 122 /* READ FPDMA QUEUED                    0x60 */
 123 /* WRITE FPDMA QUEUED                   0x61 */
 124 /* reserved                             0x62->0x6F */
 125 #define WIN_SEEK                        0x70 /* obsolete since ATA7 */
 126 /* reserved                             0x71-0x7F */
 127 /* vendor specific                      0x80-0x86 */
 128 #define CFA_TRANSLATE_SECTOR            0x87 /* CFA Translate Sector */
 129 /* vendor specific                      0x88-0x8F */
 130 #define WIN_DIAGNOSE                    0x90
 131 #define WIN_SPECIFY                     0x91 /* set drive geometry translation, obsolete since ATA6 */
 132 #define WIN_DOWNLOAD_MICROCODE          0x92
 133 /* DOWNLOAD MICROCODE DMA               0x93 */
 134 #define WIN_STANDBYNOW2                 0x94 /* retired in ATA4 */
 135 #define WIN_IDLEIMMEDIATE2              0x95 /* force drive to become "ready", retired in ATA4 */
 136 #define WIN_STANDBY2                    0x96 /* retired in ATA4 */
 137 #define WIN_SETIDLE2                    0x97 /* retired in ATA4 */
 138 #define WIN_CHECKPOWERMODE2             0x98 /* retired in ATA4 */
 139 #define WIN_SLEEPNOW2                   0x99 /* retired in ATA4 */
 140 /* vendor specific                      0x9A */
 141 /* reserved                             0x9B..0x9F */
 142 #define WIN_PACKETCMD                   0xA0 /* Send a packet command. */
 143 #define WIN_PIDENTIFY                   0xA1 /* identify ATAPI device   */
 144 #define WIN_QUEUED_SERVICE              0xA2 /* obsolete since ACS2 */
 145 /* reserved                             0xA3..0xAF */
 146 #define WIN_SMART                       0xB0 /* self-monitoring and reporting */
 147 /* Device Configuration Overlay         0xB1 */
 148 /* reserved                             0xB2..0xB3 */
 149 /* Sanitize Device                      0xB4 */
 150 /* reserved                             0xB5 */
 151 /* NV Cache                             0xB6 */
 152 /* reserved for CFA                     0xB7..0xBB */
 153 #define CFA_ACCESS_METADATA_STORAGE     0xB8
 154 /* reserved                             0xBC..0xBF */
 155 #define CFA_ERASE_SECTORS               0xC0 /* microdrives implement as NOP */
 156 /* vendor specific                      0xC1..0xC3 */
 157 #define WIN_MULTREAD                    0xC4 /* read sectors using multiple mode*/
 158 #define WIN_MULTWRITE                   0xC5 /* write sectors using multiple mode */
 159 #define WIN_SETMULT                     0xC6 /* enable/disable multiple mode */
 160 #define WIN_READDMA_QUEUED              0xC7 /* read sectors using Queued DMA transfers, obsolete since ACS2 */
 161 #define WIN_READDMA                     0xC8 /* read sectors using DMA transfers */
 162 #define WIN_READDMA_ONCE                0xC9 /* 28-Bit - w/o retries, obsolete since ATA5 */
 163 #define WIN_WRITEDMA                    0xCA /* write sectors using DMA transfers */
 164 #define WIN_WRITEDMA_ONCE               0xCB /* 28-Bit - w/o retries, obsolete since ATA5 */
 165 #define WIN_WRITEDMA_QUEUED             0xCC /* write sectors using Queued DMA transfers, obsolete since ACS2 */
 166 #define CFA_WRITE_MULTI_WO_ERASE        0xCD /* CFA Write multiple without erase */
 167 /* WRITE MULTIPLE FUA EXT               0xCE */
 168 /* reserved                             0xCF..0xDO */
 169 /* CHECK MEDIA CARD TYPE                0xD1 */
 170 /* reserved for media card pass through 0xD2..0xD4 */
 171 /* reserved                             0xD5..0xD9 */
 172 #define WIN_GETMEDIASTATUS              0xDA /* obsolete since ATA8 */
 173 /* obsolete since ATA3, retired in ATA4 0xDB..0xDD */
 174 #define WIN_DOORLOCK                    0xDE /* lock door on removable drives, obsolete since ATA8 */
 175 #define WIN_DOORUNLOCK                  0xDF /* unlock door on removable drives, obsolete since ATA8 */
 176 #define WIN_STANDBYNOW1                 0xE0
 177 #define WIN_IDLEIMMEDIATE               0xE1 /* force drive to become "ready" */
 178 #define WIN_STANDBY                     0xE2 /* Set device in Standby Mode */
 179 #define WIN_SETIDLE1                    0xE3
 180 #define WIN_READ_BUFFER                 0xE4 /* force read only 1 sector */
 181 #define WIN_CHECKPOWERMODE1             0xE5
 182 #define WIN_SLEEPNOW1                   0xE6
 183 #define WIN_FLUSH_CACHE                 0xE7
 184 #define WIN_WRITE_BUFFER                0xE8 /* force write only 1 sector */
 185 /* READ BUFFER DMA                      0xE9 */
 186 #define WIN_FLUSH_CACHE_EXT             0xEA /* 48-Bit */
 187 /* WRITE BUFFER DMA                     0xEB */
 188 #define WIN_IDENTIFY                    0xEC /* ask drive to identify itself    */
 189 #define WIN_MEDIAEJECT                  0xED /* obsolete since ATA8 */
 190 /* obsolete since ATA4                  0xEE */
 191 #define WIN_SETFEATURES                 0xEF /* set special drive features */
 192 #define IBM_SENSE_CONDITION             0xF0 /* measure disk temperature, vendor specific */
 193 #define WIN_SECURITY_SET_PASS           0xF1
 194 #define WIN_SECURITY_UNLOCK             0xF2
 195 #define WIN_SECURITY_ERASE_PREPARE      0xF3
 196 #define WIN_SECURITY_ERASE_UNIT         0xF4
 197 #define WIN_SECURITY_FREEZE_LOCK        0xF5
 198 #define CFA_WEAR_LEVEL                  0xF5 /* microdrives implement as NOP; not specified in T13! */
 199 #define WIN_SECURITY_DISABLE            0xF6
 200 /* vendor specific                      0xF7 */
 201 #define WIN_READ_NATIVE_MAX             0xF8 /* return the native maximum address */
 202 #define WIN_SET_MAX                     0xF9
 203 /* vendor specific                      0xFA..0xFF */
 204
 205 /* set to 1 set disable mult support */
 206 #define MAX_MULT_SECTORS 16
 207
 208 #define IDE_DMA_BUF_SECTORS 256
 209
 210 /* feature values for Data Set Management */
 211 #define DSM_TRIM                        0x01
 212
 213 #if (IDE_DMA_BUF_SECTORS < MAX_MULT_SECTORS)
 214 #error "IDE_DMA_BUF_SECTORS must be bigger or equal to MAX_MULT_SECTORS"
 215 #endif
 216
 217 /* ATAPI defines */
 218
 219 #define ATAPI_PACKET_SIZE 12
 220
 221 /* The generic packet command opcodes for CD/DVD Logical Units,
 222  * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */
 223 #define GPCMD_BLANK                         0xa1
 224 #define GPCMD_CLOSE_TRACK                   0x5b
 225 #define GPCMD_FLUSH_CACHE                   0x35
 226 #define GPCMD_FORMAT_UNIT                   0x04
 227 #define GPCMD_GET_CONFIGURATION             0x46
 228 #define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
 229 #define GPCMD_GET_PERFORMANCE               0xac
 230 #define GPCMD_INQUIRY                       0x12
 231 #define GPCMD_LOAD_UNLOAD                   0xa6
 232 #define GPCMD_MECHANISM_STATUS              0xbd
 233 #define GPCMD_MODE_SELECT_10                0x55
 234 #define GPCMD_MODE_SENSE_10                 0x5a
 235 #define GPCMD_PAUSE_RESUME                  0x4b
 236 #define GPCMD_PLAY_AUDIO_10                 0x45
 237 #define GPCMD_PLAY_AUDIO_MSF                0x47
 238 #define GPCMD_PLAY_AUDIO_TI                 0x48
 239 #define GPCMD_PLAY_CD                       0xbc
 240 #define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL  0x1e
 241 #define GPCMD_READ_10                       0x28
 242 #define GPCMD_READ_12                       0xa8
 243 #define GPCMD_READ_CDVD_CAPACITY            0x25
 244 #define GPCMD_READ_CD                       0xbe
 245 #define GPCMD_READ_CD_MSF                   0xb9
 246 #define GPCMD_READ_DISC_INFO                0x51
 247 #define GPCMD_READ_DVD_STRUCTURE            0xad
 248 #define GPCMD_READ_FORMAT_CAPACITIES        0x23
 249 #define GPCMD_READ_HEADER                   0x44
 250 #define GPCMD_READ_TRACK_RZONE_INFO         0x52
 251 #define GPCMD_READ_SUBCHANNEL               0x42
 252 #define GPCMD_READ_TOC_PMA_ATIP             0x43
 253 #define GPCMD_REPAIR_RZONE_TRACK            0x58
 254 #define GPCMD_REPORT_KEY                    0xa4
 255 #define GPCMD_REQUEST_SENSE                 0x03
 256 #define GPCMD_RESERVE_RZONE_TRACK           0x53
 257 #define GPCMD_SCAN                          0xba
 258 #define GPCMD_SEEK                          0x2b
 259 #define GPCMD_SEND_DVD_STRUCTURE            0xad
 260 #define GPCMD_SEND_EVENT                    0xa2
 261 #define GPCMD_SEND_KEY                      0xa3
 262 #define GPCMD_SEND_OPC                      0x54
 263 #define GPCMD_SET_READ_AHEAD                0xa7
 264 #define GPCMD_SET_STREAMING                 0xb6
 265 #define GPCMD_START_STOP_UNIT               0x1b
 266 #define GPCMD_STOP_PLAY_SCAN                0x4e
 267 #define GPCMD_TEST_UNIT_READY               0x00
 268 #define GPCMD_VERIFY_10                     0x2f
 269 #define GPCMD_WRITE_10                      0x2a
 270 #define GPCMD_WRITE_AND_VERIFY_10           0x2e
 271 /* This is listed as optional in ATAPI 2.6, but is (curiously)
 272  * missing from Mt. Fuji, Table 57.  It _is_ mentioned in Mt. Fuji
 273  * Table 377 as an MMC command for SCSi devices though...  Most ATAPI
 274  * drives support it. */
 275 #define GPCMD_SET_SPEED                     0xbb
 276 /* This seems to be a SCSI specific CD-ROM opcode
 277  * to play data at track/index */
 278 #define GPCMD_PLAYAUDIO_TI                  0x48
 279 /*
 280  * From MS Media Status Notification Support Specification. For
 281  * older drives only.
 282  */
 283 #define GPCMD_GET_MEDIA_STATUS              0xda
 284 #define GPCMD_MODE_SENSE_6                  0x1a
 285
 286 #define ATAPI_INT_REASON_CD             0x01 /* 0 = data transfer */
 287 #define ATAPI_INT_REASON_IO             0x02 /* 1 = transfer to the host */
 288 #define ATAPI_INT_REASON_REL            0x04
 289 #define ATAPI_INT_REASON_TAG            0xf8
 290
 291 /* same constants as bochs */
 292 #define ASC_NO_SEEK_COMPLETE                 0x02
 293 #define ASC_ILLEGAL_OPCODE                   0x20
 294 #define ASC_LOGICAL_BLOCK_OOR                0x21
 295 #define ASC_INV_FIELD_IN_CMD_PACKET          0x24
 296 #define ASC_MEDIUM_MAY_HAVE_CHANGED          0x28
 297 #define ASC_INCOMPATIBLE_FORMAT              0x30
 298 #define ASC_MEDIUM_NOT_PRESENT               0x3a
 299 #define ASC_SAVING_PARAMETERS_NOT_SUPPORTED  0x39
 300 #define ASC_DATA_PHASE_ERROR                 0x4b
 301 #define ASC_MEDIA_REMOVAL_PREVENTED          0x53
 302
 303 #define CFA_NO_ERROR            0x00
 304 #define CFA_MISC_ERROR          0x09
 305 #define CFA_INVALID_COMMAND     0x20
 306 #define CFA_INVALID_ADDRESS     0x21
 307 #define CFA_ADDRESS_OVERFLOW    0x2f
 308
 309 #define SMART_READ_DATA       0xd0
 310 #define SMART_READ_THRESH     0xd1
 311 #define SMART_ATTR_AUTOSAVE   0xd2
 312 #define SMART_SAVE_ATTR       0xd3
 313 #define SMART_EXECUTE_OFFLINE 0xd4
 314 #define SMART_READ_LOG        0xd5
 315 #define SMART_WRITE_LOG       0xd6
 316 #define SMART_ENABLE          0xd8
 317 #define SMART_DISABLE         0xd9
 318 #define SMART_STATUS          0xda
 319
 320 typedef enum { IDE_HD, IDE_CD, IDE_CFATA } IDEDriveKind;
 321
 322 typedef void EndTransferFunc(IDEState *);
 323
 324 typedef void DMAStartFunc(IDEDMA *, IDEState *, BlockCompletionFunc *);
 325 typedef void DMAVoidFunc(IDEDMA *);
 326 typedef int DMAIntFunc(IDEDMA *, int);
 327 typedef int32_t DMAInt32Func(IDEDMA *, int32_t len);
 328 typedef void DMAu32Func(IDEDMA *, uint32_t);
 329 typedef void DMAStopFunc(IDEDMA *, bool);
 330 typedef void DMARestartFunc(void *, int, RunState);
 331
 332 struct unreported_events {
 333     bool eject_request;
 334     bool new_media;
 335 };
 336
 337 enum ide_dma_cmd {
 338     IDE_DMA_READ,
 339     IDE_DMA_WRITE,
 340     IDE_DMA_TRIM,
 341     IDE_DMA_ATAPI,
 342 };
 343
 344 #define ide_cmd_is_read(s) \
 345         ((s)->dma_cmd == IDE_DMA_READ)
 346
 347 typedef struct IDEBufferedRequest {
 348     QLIST_ENTRY(IDEBufferedRequest) list;
 349     struct iovec iov;
 350     QEMUIOVector qiov;
 351     QEMUIOVector *original_qiov;
 352     BlockCompletionFunc *original_cb;
 353     void *original_opaque;
 354     bool orphaned;
 355 } IDEBufferedRequest;
 356
 357 /* NOTE: IDEState represents in fact one drive */
 358 struct IDEState {
 359     IDEBus *bus;
 360     uint8_t unit;
 361     /* ide config */
 362     IDEDriveKind drive_kind;
 363     int cylinders, heads, sectors, chs_trans;
 364     int64_t nb_sectors;
 365     int mult_sectors;
 366     int identify_set;
 367     uint8_t identify_data[512];
 368     int drive_serial;
 369     char drive_serial_str[21];
 370     char drive_model_str[41];
 371     uint64_t wwn;
 372     /* ide regs */
 373     uint8_t feature;
 374     uint8_t error;
 375     uint32_t nsector;
 376     uint8_t sector;
 377     uint8_t lcyl;
 378     uint8_t hcyl;
 379     /* other part of tf for lba48 support */
 380     uint8_t hob_feature;
 381     uint8_t hob_nsector;
 382     uint8_t hob_sector;
 383     uint8_t hob_lcyl;
 384     uint8_t hob_hcyl;
 385
 386     uint8_t select;
 387     uint8_t status;
 388
 389     /* set for lba48 access */
 390     uint8_t lba48;
 391     BlockBackend *blk;
 392     char version[9];
 393     /* ATAPI specific */
 394     struct unreported_events events;
 395     uint8_t sense_key;
 396     uint8_t asc;
 397     bool tray_open;
 398     bool tray_locked;
 399     uint8_t cdrom_changed;
 400     int packet_transfer_size;
 401     int elementary_transfer_size;
 402     int32_t io_buffer_index;
 403     int lba;
 404     int cd_sector_size;
 405     int atapi_dma; /* true if dma is requested for the packet cmd */
 406     BlockAcctCookie acct;
 407     BlockAIOCB *pio_aiocb;
 408     struct iovec iov;
 409     QEMUIOVector qiov;
 410     QLIST_HEAD(, IDEBufferedRequest) buffered_requests;
 411     /* ATA DMA state */
 412     uint64_t io_buffer_offset;
 413     int32_t io_buffer_size;
 414     QEMUSGList sg;
 415     /* PIO transfer handling */
 416     int req_nb_sectors; /* number of sectors per interrupt */
 417     EndTransferFunc *end_transfer_func;
 418     uint8_t *data_ptr;
 419     uint8_t *data_end;
 420     uint8_t *io_buffer;
 421     /* PIO save/restore */
 422     int32_t io_buffer_total_len;
 423     int32_t cur_io_buffer_offset;
 424     int32_t cur_io_buffer_len;
 425     uint8_t end_transfer_fn_idx;
 426     QEMUTimer *sector_write_timer; /* only used for win2k install hack */
 427     uint32_t irq_count; /* counts IRQs when using win2k install hack */
 428     /* CF-ATA extended error */
 429     uint8_t ext_error;
 430     /* CF-ATA metadata storage */
 431     uint32_t mdata_size;
 432     uint8_t *mdata_storage;
 433     int media_changed;
 434     enum ide_dma_cmd dma_cmd;
 435     /* SMART */
 436     uint8_t smart_enabled;
 437     uint8_t smart_autosave;
 438     int smart_errors;
 439     uint8_t smart_selftest_count;
 440     uint8_t *smart_selftest_data;
 441     /* AHCI */
 442     int ncq_queues;
 443 };
 444
 445 struct IDEDMAOps {
 446     DMAStartFunc *start_dma;
 447     DMAVoidFunc *start_transfer;
 448     DMAInt32Func *prepare_buf;
 449     DMAu32Func *commit_buf;
 450     DMAIntFunc *rw_buf;
 451     DMAVoidFunc *restart;
 452     DMAVoidFunc *restart_dma;
 453     DMAStopFunc *set_inactive;
 454     DMAVoidFunc *cmd_done;
 455     DMAVoidFunc *reset;
 456 };
 457
 458 struct IDEDMA {
 459     const struct IDEDMAOps *ops;
 460     struct iovec iov;
 461     QEMUIOVector qiov;
 462     BlockAIOCB *aiocb;
 463 };
 464
 465 struct IDEBus {
 466     BusState qbus;
 467     IDEDevice *master;
 468     IDEDevice *slave;
 469     IDEState ifs[2];
 470     QEMUBH *bh;
 471
 472     int bus_id;
 473     int max_units;
 474     IDEDMA *dma;
 475     uint8_t unit;
 476     uint8_t cmd;
 477     qemu_irq irq;
 478
 479     int error_status;
 480     uint8_t retry_unit;
 481     int64_t retry_sector_num;
 482     uint32_t retry_nsector;
 483 };
 484
 485 #define TYPE_IDE_DEVICE "ide-device"
 486 #define IDE_DEVICE(obj) \
 487      OBJECT_CHECK(IDEDevice, (obj), TYPE_IDE_DEVICE)
 488 #define IDE_DEVICE_CLASS(klass) \
 489      OBJECT_CLASS_CHECK(IDEDeviceClass, (klass), TYPE_IDE_DEVICE)
 490 #define IDE_DEVICE_GET_CLASS(obj) \
 491      OBJECT_GET_CLASS(IDEDeviceClass, (obj), TYPE_IDE_DEVICE)
 492
 493 typedef struct IDEDeviceClass {
 494     DeviceClass parent_class;
 495     int (*init)(IDEDevice *dev);
 496 } IDEDeviceClass;
 497
 498 struct IDEDevice {
 499     DeviceState qdev;
 500     uint32_t unit;
 501     BlockConf conf;
 502     int chs_trans;
 503     char *version;
 504     char *serial;
 505     char *model;
 506     uint64_t wwn;
 507 };
 508
 509 /* These are used for the error_status field of IDEBus */
 510 #define IDE_RETRY_MASK 0xf8
 511 #define IDE_RETRY_DMA  0x08
 512 #define IDE_RETRY_PIO  0x10
 513 #define IDE_RETRY_ATAPI 0x20 /* reused IDE_RETRY_READ bit */
 514 #define IDE_RETRY_READ  0x20
 515 #define IDE_RETRY_FLUSH 0x40
 516 #define IDE_RETRY_TRIM 0x80
 517 #define IDE_RETRY_HBA  0x100
 518
 519 #define IS_IDE_RETRY_DMA(_status) \
 520     ((_status) & IDE_RETRY_DMA)
 521
 522 #define IS_IDE_RETRY_PIO(_status) \
 523     ((_status) & IDE_RETRY_PIO)
 524
 525 /*
 526  * The method of the IDE_RETRY_ATAPI determination is to use a previously
 527  * impossible bit combination as a new status value.
 528  */
 529 #define IS_IDE_RETRY_ATAPI(_status)   \
 530     (((_status) & IDE_RETRY_MASK) == IDE_RETRY_ATAPI)
 531
 532 static inline uint8_t ide_dma_cmd_to_retry(uint8_t dma_cmd)
 533 {
 534     switch (dma_cmd) {
 535     case IDE_DMA_READ:
 536         return IDE_RETRY_DMA | IDE_RETRY_READ;
 537     case IDE_DMA_WRITE:
 538         return IDE_RETRY_DMA;
 539     case IDE_DMA_TRIM:
 540         return IDE_RETRY_DMA | IDE_RETRY_TRIM;
 541     case IDE_DMA_ATAPI:
 542         return IDE_RETRY_ATAPI;
 543     default:
 544         break;
 545     }
 546     return 0;
 547 }
 548
 549 static inline IDEState *idebus_active_if(IDEBus *bus)
 550 {
 551     return bus->ifs + bus->unit;
 552 }
 553
 554 static inline void ide_set_irq(IDEBus *bus)
 555 {
 556     if (!(bus->cmd & IDE_CMD_DISABLE_IRQ)) {
 557         qemu_irq_raise(bus->irq);
 558     }
 559 }
 560
 561 /* hw/ide/core.c */
 562 extern const VMStateDescription vmstate_ide_bus;
 563
 564 #define VMSTATE_IDE_BUS(_field, _state)                          \
 565     VMSTATE_STRUCT(_field, _state, 1, vmstate_ide_bus, IDEBus)
 566
 567 #define VMSTATE_IDE_BUS_ARRAY(_field, _state, _num)              \
 568     VMSTATE_STRUCT_ARRAY(_field, _state, _num, 1, vmstate_ide_bus, IDEBus)
 569
 570 extern const VMStateDescription vmstate_ide_drive;
 571
 572 #define VMSTATE_IDE_DRIVES(_field, _state) \
 573     VMSTATE_STRUCT_ARRAY(_field, _state, 2, 3, vmstate_ide_drive, IDEState)
 574
 575 #define VMSTATE_IDE_DRIVE(_field, _state) \
 576     VMSTATE_STRUCT(_field, _state, 1, vmstate_ide_drive, IDEState)
 577
 578 void ide_bus_reset(IDEBus *bus);
 579 int64_t ide_get_sector(IDEState *s);
 580 void ide_set_sector(IDEState *s, int64_t sector_num);
 581
 582 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb);
 583 void dma_buf_commit(IDEState *s, uint32_t tx_bytes);
 584 void ide_dma_error(IDEState *s);
 585 void ide_abort_command(IDEState *s);
 586
 587 void ide_atapi_cmd_ok(IDEState *s);
 588 void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc);
 589 void ide_atapi_dma_restart(IDEState *s);
 590 void ide_atapi_io_error(IDEState *s, int ret);
 591
 592 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val);
 593 uint32_t ide_ioport_read(void *opaque, uint32_t addr1);
 594 uint32_t ide_status_read(void *opaque, uint32_t addr);
 595 void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val);
 596 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val);
 597 uint32_t ide_data_readw(void *opaque, uint32_t addr);
 598 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val);
 599 uint32_t ide_data_readl(void *opaque, uint32_t addr);
 600
 601 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
 602                    const char *version, const char *serial, const char *model,
 603                    uint64_t wwn,
 604                    uint32_t cylinders, uint32_t heads, uint32_t secs,
 605                    int chs_trans);
 606 void ide_init2(IDEBus *bus, qemu_irq irq);
 607 void ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2);
 608 void ide_register_restart_cb(IDEBus *bus);
 609
 610 void ide_exec_cmd(IDEBus *bus, uint32_t val);
 611
 612 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
 613                         EndTransferFunc *end_transfer_func);
 614 void ide_transfer_stop(IDEState *s);
 615 void ide_set_inactive(IDEState *s, bool more);
 616 BlockAIOCB *ide_issue_trim(
 617         int64_t offset, QEMUIOVector *qiov,
 618         BlockCompletionFunc *cb, void *cb_opaque, void *opaque);
 619 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
 620                                QEMUIOVector *iov, int nb_sectors,
 621                                BlockCompletionFunc *cb, void *opaque);
 622 void ide_cancel_dma_sync(IDEState *s);
 623
 624 /* hw/ide/atapi.c */
 625 void ide_atapi_cmd(IDEState *s);
 626 void ide_atapi_cmd_reply_end(IDEState *s);
 627
 628 /* hw/ide/qdev.c */
 629 void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
 630                  int bus_id, int max_units);
 631 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive);
 632
 633 int ide_handle_rw_error(IDEState *s, int error, int op);
 634
 635 #endif /* HW_IDE_INTERNAL_H */