1 #ifndef QEMU_HW_SCSI_H 2 #define QEMU_HW_SCSI_H 3 4 #include "hw/qdev.h" 5 #include "block/block.h" 6 #include "hw/block/block.h" 7 #include "sysemu/sysemu.h" 8 9 #define MAX_SCSI_DEVS 255 10 11 #define SCSI_CMD_BUF_SIZE 16 12 #define SCSI_SENSE_LEN 18 13 #define SCSI_INQUIRY_LEN 36 14 15 typedef struct SCSIBus SCSIBus; 16 typedef struct SCSIBusInfo SCSIBusInfo; 17 typedef struct SCSICommand SCSICommand; 18 typedef struct SCSIDevice SCSIDevice; 19 typedef struct SCSIRequest SCSIRequest; 20 typedef struct SCSIReqOps SCSIReqOps; 21 22 enum SCSIXferMode { 23 SCSI_XFER_NONE, /* TEST_UNIT_READY, ... */ 24 SCSI_XFER_FROM_DEV, /* READ, INQUIRY, MODE_SENSE, ... */ 25 SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */ 26 }; 27 28 typedef struct SCSISense { 29 uint8_t key; 30 uint8_t asc; 31 uint8_t ascq; 32 } SCSISense; 33 34 #define SCSI_SENSE_BUF_SIZE 96 35 36 struct SCSICommand { 37 uint8_t buf[SCSI_CMD_BUF_SIZE]; 38 int len; 39 size_t xfer; 40 uint64_t lba; 41 enum SCSIXferMode mode; 42 }; 43 44 struct SCSIRequest { 45 SCSIBus *bus; 46 SCSIDevice *dev; 47 const SCSIReqOps *ops; 48 uint32_t refcount; 49 uint32_t tag; 50 uint32_t lun; 51 uint32_t status; 52 size_t resid; 53 SCSICommand cmd; 54 BlockDriverAIOCB *aiocb; 55 QEMUSGList *sg; 56 bool dma_started; 57 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 58 uint32_t sense_len; 59 bool enqueued; 60 bool io_canceled; 61 bool retry; 62 void *hba_private; 63 QTAILQ_ENTRY(SCSIRequest) next; 64 }; 65 66 #define TYPE_SCSI_DEVICE "scsi-device" 67 #define SCSI_DEVICE(obj) \ 68 OBJECT_CHECK(SCSIDevice, (obj), TYPE_SCSI_DEVICE) 69 #define SCSI_DEVICE_CLASS(klass) \ 70 OBJECT_CLASS_CHECK(SCSIDeviceClass, (klass), TYPE_SCSI_DEVICE) 71 #define SCSI_DEVICE_GET_CLASS(obj) \ 72 OBJECT_GET_CLASS(SCSIDeviceClass, (obj), TYPE_SCSI_DEVICE) 73 74 typedef struct SCSIDeviceClass { 75 DeviceClass parent_class; 76 int (*init)(SCSIDevice *dev); 77 void (*destroy)(SCSIDevice *s); 78 SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun, 79 uint8_t *buf, void *hba_private); 80 void (*unit_attention_reported)(SCSIDevice *s); 81 } SCSIDeviceClass; 82 83 struct SCSIDevice 84 { 85 DeviceState qdev; 86 VMChangeStateEntry *vmsentry; 87 QEMUBH *bh; 88 uint32_t id; 89 BlockConf conf; 90 SCSISense unit_attention; 91 bool sense_is_ua; 92 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 93 uint32_t sense_len; 94 QTAILQ_HEAD(, SCSIRequest) requests; 95 uint32_t channel; 96 uint32_t lun; 97 int blocksize; 98 int type; 99 uint64_t max_lba; 100 }; 101 102 extern const VMStateDescription vmstate_scsi_device; 103 104 #define VMSTATE_SCSI_DEVICE(_field, _state) { \ 105 .name = (stringify(_field)), \ 106 .size = sizeof(SCSIDevice), \ 107 .vmsd = &vmstate_scsi_device, \ 108 .flags = VMS_STRUCT, \ 109 .offset = vmstate_offset_value(_state, _field, SCSIDevice), \ 110 } 111 112 /* cdrom.c */ 113 int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track); 114 int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num); 115 116 /* scsi-bus.c */ 117 struct SCSIReqOps { 118 size_t size; 119 void (*free_req)(SCSIRequest *req); 120 int32_t (*send_command)(SCSIRequest *req, uint8_t *buf); 121 void (*read_data)(SCSIRequest *req); 122 void (*write_data)(SCSIRequest *req); 123 void (*cancel_io)(SCSIRequest *req); 124 uint8_t *(*get_buf)(SCSIRequest *req); 125 126 void (*save_request)(QEMUFile *f, SCSIRequest *req); 127 void (*load_request)(QEMUFile *f, SCSIRequest *req); 128 }; 129 130 struct SCSIBusInfo { 131 int tcq; 132 int max_channel, max_target, max_lun; 133 void (*transfer_data)(SCSIRequest *req, uint32_t arg); 134 void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid); 135 void (*cancel)(SCSIRequest *req); 136 void (*hotplug)(SCSIBus *bus, SCSIDevice *dev); 137 void (*hot_unplug)(SCSIBus *bus, SCSIDevice *dev); 138 void (*change)(SCSIBus *bus, SCSIDevice *dev, SCSISense sense); 139 QEMUSGList *(*get_sg_list)(SCSIRequest *req); 140 141 void (*save_request)(QEMUFile *f, SCSIRequest *req); 142 void *(*load_request)(QEMUFile *f, SCSIRequest *req); 143 void (*free_request)(SCSIBus *bus, void *priv); 144 }; 145 146 #define TYPE_SCSI_BUS "SCSI" 147 #define SCSI_BUS(obj) OBJECT_CHECK(SCSIBus, (obj), TYPE_SCSI_BUS) 148 149 struct SCSIBus { 150 BusState qbus; 151 int busnr; 152 153 SCSISense unit_attention; 154 const SCSIBusInfo *info; 155 }; 156 157 void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, 158 const SCSIBusInfo *info, const char *bus_name); 159 160 static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) 161 { 162 return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); 163 } 164 165 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, 166 int unit, bool removable, int bootindex, 167 const char *serial, Error **errp); 168 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp); 169 170 /* 171 * Predefined sense codes 172 */ 173 174 /* No sense data available */ 175 extern const struct SCSISense sense_code_NO_SENSE; 176 /* LUN not ready, Manual intervention required */ 177 extern const struct SCSISense sense_code_LUN_NOT_READY; 178 /* LUN not ready, Medium not present */ 179 extern const struct SCSISense sense_code_NO_MEDIUM; 180 /* LUN not ready, medium removal prevented */ 181 extern const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED; 182 /* Hardware error, internal target failure */ 183 extern const struct SCSISense sense_code_TARGET_FAILURE; 184 /* Illegal request, invalid command operation code */ 185 extern const struct SCSISense sense_code_INVALID_OPCODE; 186 /* Illegal request, LBA out of range */ 187 extern const struct SCSISense sense_code_LBA_OUT_OF_RANGE; 188 /* Illegal request, Invalid field in CDB */ 189 extern const struct SCSISense sense_code_INVALID_FIELD; 190 /* Illegal request, Invalid field in parameter list */ 191 extern const struct SCSISense sense_code_INVALID_PARAM; 192 /* Illegal request, Parameter list length error */ 193 extern const struct SCSISense sense_code_INVALID_PARAM_LEN; 194 /* Illegal request, LUN not supported */ 195 extern const struct SCSISense sense_code_LUN_NOT_SUPPORTED; 196 /* Illegal request, Saving parameters not supported */ 197 extern const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED; 198 /* Illegal request, Incompatible format */ 199 extern const struct SCSISense sense_code_INCOMPATIBLE_FORMAT; 200 /* Illegal request, medium removal prevented */ 201 extern const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED; 202 /* Illegal request, Invalid Transfer Tag */ 203 extern const struct SCSISense sense_code_INVALID_TAG; 204 /* Command aborted, I/O process terminated */ 205 extern const struct SCSISense sense_code_IO_ERROR; 206 /* Command aborted, I_T Nexus loss occurred */ 207 extern const struct SCSISense sense_code_I_T_NEXUS_LOSS; 208 /* Command aborted, Logical Unit failure */ 209 extern const struct SCSISense sense_code_LUN_FAILURE; 210 /* Command aborted, Overlapped Commands Attempted */ 211 extern const struct SCSISense sense_code_OVERLAPPED_COMMANDS; 212 /* LUN not ready, Capacity data has changed */ 213 extern const struct SCSISense sense_code_CAPACITY_CHANGED; 214 /* LUN not ready, Medium not present */ 215 extern const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM; 216 /* Unit attention, Power on, reset or bus device reset occurred */ 217 extern const struct SCSISense sense_code_RESET; 218 /* Unit attention, Medium may have changed*/ 219 extern const struct SCSISense sense_code_MEDIUM_CHANGED; 220 /* Unit attention, Reported LUNs data has changed */ 221 extern const struct SCSISense sense_code_REPORTED_LUNS_CHANGED; 222 /* Unit attention, Device internal reset */ 223 extern const struct SCSISense sense_code_DEVICE_INTERNAL_RESET; 224 /* Data Protection, Write Protected */ 225 extern const struct SCSISense sense_code_WRITE_PROTECTED; 226 227 #define SENSE_CODE(x) sense_code_ ## x 228 229 uint32_t scsi_data_cdb_length(uint8_t *buf); 230 uint32_t scsi_cdb_length(uint8_t *buf); 231 int scsi_sense_valid(SCSISense sense); 232 int scsi_build_sense(uint8_t *in_buf, int in_len, 233 uint8_t *buf, int len, bool fixed); 234 235 SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, 236 uint32_t tag, uint32_t lun, void *hba_private); 237 SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, 238 uint8_t *buf, void *hba_private); 239 int32_t scsi_req_enqueue(SCSIRequest *req); 240 void scsi_req_free(SCSIRequest *req); 241 SCSIRequest *scsi_req_ref(SCSIRequest *req); 242 void scsi_req_unref(SCSIRequest *req); 243 244 void scsi_req_build_sense(SCSIRequest *req, SCSISense sense); 245 void scsi_req_print(SCSIRequest *req); 246 void scsi_req_continue(SCSIRequest *req); 247 void scsi_req_data(SCSIRequest *req, int len); 248 void scsi_req_complete(SCSIRequest *req, int status); 249 uint8_t *scsi_req_get_buf(SCSIRequest *req); 250 int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len); 251 void scsi_req_abort(SCSIRequest *req, int status); 252 void scsi_req_cancel(SCSIRequest *req); 253 void scsi_req_retry(SCSIRequest *req); 254 void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense); 255 void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense); 256 void scsi_device_report_change(SCSIDevice *dev, SCSISense sense); 257 int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); 258 SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); 259 260 /* scsi-generic.c. */ 261 extern const SCSIReqOps scsi_generic_req_ops; 262 263 #endif 264