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#ifndef QEMU_HW_SCSI_H
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#define QEMU_HW_SCSI_H
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#include "qdev.h" |
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#include "block.h" |
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#include "sysemu.h" |
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#define MAX_SCSI_DEVS 255 |
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#define SCSI_CMD_BUF_SIZE 16 |
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typedef struct SCSIBus SCSIBus; |
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typedef struct SCSIBusInfo SCSIBusInfo; |
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typedef struct SCSICommand SCSICommand; |
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typedef struct SCSIDevice SCSIDevice; |
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typedef struct SCSIRequest SCSIRequest; |
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typedef struct SCSIReqOps SCSIReqOps; |
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enum SCSIXferMode {
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SCSI_XFER_NONE, /* TEST_UNIT_READY, ... */
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SCSI_XFER_FROM_DEV, /* READ, INQUIRY, MODE_SENSE, ... */
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SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */
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}; |
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typedef struct SCSISense { |
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uint8_t key; |
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uint8_t asc; |
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uint8_t ascq; |
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} SCSISense; |
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#define SCSI_SENSE_BUF_SIZE 96 |
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struct SCSICommand {
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uint8_t buf[SCSI_CMD_BUF_SIZE]; |
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int len;
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size_t xfer; |
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uint64_t lba; |
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enum SCSIXferMode mode;
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}; |
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struct SCSIRequest {
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SCSIBus *bus; |
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SCSIDevice *dev; |
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const SCSIReqOps *ops;
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uint32_t refcount; |
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uint32_t tag; |
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uint32_t lun; |
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uint32_t status; |
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SCSICommand cmd; |
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BlockDriverAIOCB *aiocb; |
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uint8_t sense[SCSI_SENSE_BUF_SIZE]; |
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uint32_t sense_len; |
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bool enqueued;
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bool io_canceled;
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bool retry;
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void *hba_private;
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QTAILQ_ENTRY(SCSIRequest) next; |
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}; |
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#define TYPE_SCSI_DEVICE "scsi-device" |
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#define SCSI_DEVICE(obj) \
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OBJECT_CHECK(SCSIDevice, (obj), TYPE_SCSI_DEVICE) |
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#define SCSI_DEVICE_CLASS(klass) \
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OBJECT_CLASS_CHECK(SCSIDeviceClass, (klass), TYPE_SCSI_DEVICE) |
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#define SCSI_DEVICE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(SCSIDeviceClass, (obj), TYPE_SCSI_DEVICE) |
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typedef struct SCSIDeviceClass { |
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DeviceClass parent_class; |
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int (*init)(SCSIDevice *dev);
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void (*destroy)(SCSIDevice *s);
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SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun, |
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uint8_t *buf, void *hba_private);
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void (*unit_attention_reported)(SCSIDevice *s);
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} SCSIDeviceClass; |
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struct SCSIDevice
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{ |
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DeviceState qdev; |
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VMChangeStateEntry *vmsentry; |
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QEMUBH *bh; |
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uint32_t id; |
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BlockConf conf; |
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SCSISense unit_attention; |
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bool sense_is_ua;
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uint8_t sense[SCSI_SENSE_BUF_SIZE]; |
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uint32_t sense_len; |
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QTAILQ_HEAD(, SCSIRequest) requests; |
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uint32_t channel; |
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uint32_t lun; |
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int blocksize;
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int type;
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uint64_t max_lba; |
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}; |
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/* cdrom.c */
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int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track); |
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int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num); |
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/* scsi-bus.c */
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struct SCSIReqOps {
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size_t size; |
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void (*free_req)(SCSIRequest *req);
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int32_t (*send_command)(SCSIRequest *req, uint8_t *buf); |
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void (*read_data)(SCSIRequest *req);
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void (*write_data)(SCSIRequest *req);
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void (*cancel_io)(SCSIRequest *req);
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uint8_t *(*get_buf)(SCSIRequest *req); |
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}; |
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struct SCSIBusInfo {
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int tcq;
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int max_channel, max_target, max_lun;
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void (*transfer_data)(SCSIRequest *req, uint32_t arg);
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void (*complete)(SCSIRequest *req, uint32_t arg);
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void (*cancel)(SCSIRequest *req);
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}; |
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struct SCSIBus {
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BusState qbus; |
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int busnr;
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SCSISense unit_attention; |
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const SCSIBusInfo *info;
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}; |
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void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info); |
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static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) |
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{ |
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return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
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} |
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SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
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int unit, bool removable, int bootindex); |
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int scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
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/*
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* Predefined sense codes
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*/
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/* No sense data available */
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extern const struct SCSISense sense_code_NO_SENSE; |
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/* LUN not ready, Manual intervention required */
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extern const struct SCSISense sense_code_LUN_NOT_READY; |
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/* LUN not ready, Medium not present */
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extern const struct SCSISense sense_code_NO_MEDIUM; |
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/* LUN not ready, medium removal prevented */
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extern const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED; |
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/* Hardware error, internal target failure */
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extern const struct SCSISense sense_code_TARGET_FAILURE; |
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/* Illegal request, invalid command operation code */
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extern const struct SCSISense sense_code_INVALID_OPCODE; |
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/* Illegal request, LBA out of range */
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extern const struct SCSISense sense_code_LBA_OUT_OF_RANGE; |
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/* Illegal request, Invalid field in CDB */
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extern const struct SCSISense sense_code_INVALID_FIELD; |
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/* Illegal request, LUN not supported */
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extern const struct SCSISense sense_code_LUN_NOT_SUPPORTED; |
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/* Illegal request, Saving parameters not supported */
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extern const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED; |
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/* Illegal request, Incompatible format */
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extern const struct SCSISense sense_code_INCOMPATIBLE_FORMAT; |
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/* Illegal request, medium removal prevented */
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extern const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED; |
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/* Command aborted, I/O process terminated */
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extern const struct SCSISense sense_code_IO_ERROR; |
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/* Command aborted, I_T Nexus loss occurred */
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extern const struct SCSISense sense_code_I_T_NEXUS_LOSS; |
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/* Command aborted, Logical Unit failure */
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extern const struct SCSISense sense_code_LUN_FAILURE; |
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/* LUN not ready, Medium not present */
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extern const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM; |
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/* Unit attention, Power on, reset or bus device reset occurred */
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extern const struct SCSISense sense_code_RESET; |
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/* Unit attention, Medium may have changed*/
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extern const struct SCSISense sense_code_MEDIUM_CHANGED; |
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/* Unit attention, Reported LUNs data has changed */
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extern const struct SCSISense sense_code_REPORTED_LUNS_CHANGED; |
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/* Unit attention, Device internal reset */
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extern const struct SCSISense sense_code_DEVICE_INTERNAL_RESET; |
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#define SENSE_CODE(x) sense_code_ ## x |
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int scsi_sense_valid(SCSISense sense);
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int scsi_build_sense(uint8_t *in_buf, int in_len, |
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uint8_t *buf, int len, bool fixed); |
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SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
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uint32_t tag, uint32_t lun, void *hba_private);
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SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
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uint8_t *buf, void *hba_private);
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int32_t scsi_req_enqueue(SCSIRequest *req); |
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void scsi_req_free(SCSIRequest *req);
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SCSIRequest *scsi_req_ref(SCSIRequest *req); |
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void scsi_req_unref(SCSIRequest *req);
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void scsi_req_build_sense(SCSIRequest *req, SCSISense sense);
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void scsi_req_print(SCSIRequest *req);
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void scsi_req_continue(SCSIRequest *req);
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void scsi_req_data(SCSIRequest *req, int len); |
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void scsi_req_complete(SCSIRequest *req, int status); |
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uint8_t *scsi_req_get_buf(SCSIRequest *req); |
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int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len); |
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void scsi_req_abort(SCSIRequest *req, int status); |
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void scsi_req_cancel(SCSIRequest *req);
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void scsi_req_retry(SCSIRequest *req);
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void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);
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int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); |
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SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); |
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/* scsi-generic.c. */
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extern const SCSIReqOps scsi_generic_req_ops; |
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#endif
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