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