1 #ifndef QEMU_HW_SCSI_H 2 #define QEMU_HW_SCSI_H 3 4 #include "block/aio.h" 5 #include "hw/block/block.h" 6 #include "hw/qdev-core.h" 7 #include "scsi/utils.h" 8 #include "qemu/notify.h" 9 #include "qom/object.h" 10 11 #define MAX_SCSI_DEVS 255 12 13 typedef struct SCSIBus SCSIBus; 14 typedef struct SCSIBusInfo SCSIBusInfo; 15 typedef struct SCSIDevice SCSIDevice; 16 typedef struct SCSIRequest SCSIRequest; 17 typedef struct SCSIReqOps SCSIReqOps; 18 19 #define SCSI_SENSE_BUF_SIZE_OLD 96 20 #define SCSI_SENSE_BUF_SIZE 252 21 22 struct SCSIRequest { 23 SCSIBus *bus; 24 SCSIDevice *dev; 25 const SCSIReqOps *ops; 26 uint32_t refcount; 27 uint32_t tag; 28 uint32_t lun; 29 uint32_t status; 30 void *hba_private; 31 size_t resid; 32 SCSICommand cmd; 33 NotifierList cancel_notifiers; 34 35 /* Note: 36 * - fields before sense are initialized by scsi_req_alloc; 37 * - sense[] is uninitialized; 38 * - fields after sense are memset to 0 by scsi_req_alloc. 39 * */ 40 41 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 42 uint32_t sense_len; 43 bool enqueued; 44 bool io_canceled; 45 bool retry; 46 bool dma_started; 47 BlockAIOCB *aiocb; 48 QEMUSGList *sg; 49 QTAILQ_ENTRY(SCSIRequest) next; 50 }; 51 52 #define TYPE_SCSI_DEVICE "scsi-device" 53 OBJECT_DECLARE_TYPE(SCSIDevice, SCSIDeviceClass, SCSI_DEVICE) 54 55 struct SCSIDeviceClass { 56 DeviceClass parent_class; 57 void (*realize)(SCSIDevice *dev, Error **errp); 58 void (*unrealize)(SCSIDevice *dev); 59 int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 60 void *hba_private); 61 SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun, 62 uint8_t *buf, void *hba_private); 63 void (*unit_attention_reported)(SCSIDevice *s); 64 }; 65 66 struct SCSIDevice 67 { 68 DeviceState qdev; 69 VMChangeStateEntry *vmsentry; 70 QEMUBH *bh; 71 uint32_t id; 72 BlockConf conf; 73 SCSISense unit_attention; 74 bool sense_is_ua; 75 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 76 uint32_t sense_len; 77 QTAILQ_HEAD(, SCSIRequest) requests; 78 uint32_t channel; 79 uint32_t lun; 80 int blocksize; 81 int type; 82 uint64_t max_lba; 83 uint64_t wwn; 84 uint64_t port_wwn; 85 int scsi_version; 86 int default_scsi_version; 87 bool needs_vpd_bl_emulation; 88 bool hba_supports_iothread; 89 }; 90 91 extern const VMStateDescription vmstate_scsi_device; 92 93 #define VMSTATE_SCSI_DEVICE(_field, _state) { \ 94 .name = (stringify(_field)), \ 95 .size = sizeof(SCSIDevice), \ 96 .vmsd = &vmstate_scsi_device, \ 97 .flags = VMS_STRUCT, \ 98 .offset = vmstate_offset_value(_state, _field, SCSIDevice), \ 99 } 100 101 /* cdrom.c */ 102 int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track); 103 int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num); 104 105 /* scsi-bus.c */ 106 struct SCSIReqOps { 107 size_t size; 108 void (*free_req)(SCSIRequest *req); 109 int32_t (*send_command)(SCSIRequest *req, uint8_t *buf); 110 void (*read_data)(SCSIRequest *req); 111 void (*write_data)(SCSIRequest *req); 112 uint8_t *(*get_buf)(SCSIRequest *req); 113 114 void (*save_request)(QEMUFile *f, SCSIRequest *req); 115 void (*load_request)(QEMUFile *f, SCSIRequest *req); 116 }; 117 118 struct SCSIBusInfo { 119 int tcq; 120 int max_channel, max_target, max_lun; 121 int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 122 void *hba_private); 123 void (*transfer_data)(SCSIRequest *req, uint32_t arg); 124 void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid); 125 void (*cancel)(SCSIRequest *req); 126 void (*change)(SCSIBus *bus, SCSIDevice *dev, SCSISense sense); 127 QEMUSGList *(*get_sg_list)(SCSIRequest *req); 128 129 void (*save_request)(QEMUFile *f, SCSIRequest *req); 130 void *(*load_request)(QEMUFile *f, SCSIRequest *req); 131 void (*free_request)(SCSIBus *bus, void *priv); 132 }; 133 134 #define TYPE_SCSI_BUS "SCSI" 135 DECLARE_INSTANCE_CHECKER(SCSIBus, SCSI_BUS, 136 TYPE_SCSI_BUS) 137 138 struct SCSIBus { 139 BusState qbus; 140 int busnr; 141 142 SCSISense unit_attention; 143 const SCSIBusInfo *info; 144 }; 145 146 void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, 147 const SCSIBusInfo *info, const char *bus_name); 148 149 static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) 150 { 151 return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); 152 } 153 154 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, 155 int unit, bool removable, int bootindex, 156 bool share_rw, 157 BlockdevOnError rerror, 158 BlockdevOnError werror, 159 const char *serial, Error **errp); 160 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus); 161 void scsi_legacy_handle_cmdline(void); 162 163 SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, 164 uint32_t tag, uint32_t lun, void *hba_private); 165 SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, 166 uint8_t *buf, void *hba_private); 167 int32_t scsi_req_enqueue(SCSIRequest *req); 168 SCSIRequest *scsi_req_ref(SCSIRequest *req); 169 void scsi_req_unref(SCSIRequest *req); 170 171 int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 172 void *hba_private); 173 int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf); 174 void scsi_req_build_sense(SCSIRequest *req, SCSISense sense); 175 void scsi_req_print(SCSIRequest *req); 176 void scsi_req_continue(SCSIRequest *req); 177 void scsi_req_data(SCSIRequest *req, int len); 178 void scsi_req_complete(SCSIRequest *req, int status); 179 uint8_t *scsi_req_get_buf(SCSIRequest *req); 180 int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len); 181 void scsi_req_cancel_complete(SCSIRequest *req); 182 void scsi_req_cancel(SCSIRequest *req); 183 void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier); 184 void scsi_req_retry(SCSIRequest *req); 185 void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense); 186 void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense); 187 void scsi_device_report_change(SCSIDevice *dev, SCSISense sense); 188 void scsi_device_unit_attention_reported(SCSIDevice *dev); 189 void scsi_generic_read_device_inquiry(SCSIDevice *dev); 190 int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); 191 int scsi_SG_IO_FROM_DEV(BlockBackend *blk, uint8_t *cmd, uint8_t cmd_size, 192 uint8_t *buf, uint8_t buf_size); 193 SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); 194 195 /* scsi-generic.c. */ 196 extern const SCSIReqOps scsi_generic_req_ops; 197 198 #endif 199