diff options
Diffstat (limited to 'include/hw/scsi/scsi.h')
| -rw-r--r-- | include/hw/scsi/scsi.h | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h new file mode 100644 index 0000000..3bda1c4 --- /dev/null +++ b/include/hw/scsi/scsi.h @@ -0,0 +1,256 @@ +#ifndef QEMU_HW_SCSI_H +#define QEMU_HW_SCSI_H + +#include "hw/qdev.h" +#include "block/block.h" +#include "hw/block/block.h" +#include "sysemu/sysemu.h" + +#define MAX_SCSI_DEVS 255 + +#define SCSI_CMD_BUF_SIZE 16 + +typedef struct SCSIBus SCSIBus; +typedef struct SCSIBusInfo SCSIBusInfo; +typedef struct SCSICommand SCSICommand; +typedef struct SCSIDevice SCSIDevice; +typedef struct SCSIRequest SCSIRequest; +typedef struct SCSIReqOps SCSIReqOps; + +enum SCSIXferMode { + SCSI_XFER_NONE, /* TEST_UNIT_READY, ... */ + SCSI_XFER_FROM_DEV, /* READ, INQUIRY, MODE_SENSE, ... */ + SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */ +}; + +typedef struct SCSISense { + uint8_t key; + uint8_t asc; + uint8_t ascq; +} SCSISense; + +#define SCSI_SENSE_BUF_SIZE 96 + +struct SCSICommand { + uint8_t buf[SCSI_CMD_BUF_SIZE]; + int len; + size_t xfer; + uint64_t lba; + enum SCSIXferMode mode; +}; + +struct SCSIRequest { + SCSIBus *bus; + SCSIDevice *dev; + const SCSIReqOps *ops; + uint32_t refcount; + uint32_t tag; + uint32_t lun; + uint32_t status; + size_t resid; + SCSICommand cmd; + BlockDriverAIOCB *aiocb; + QEMUSGList *sg; + bool dma_started; + uint8_t sense[SCSI_SENSE_BUF_SIZE]; + uint32_t sense_len; + bool enqueued; + bool io_canceled; + bool retry; + void *hba_private; + QTAILQ_ENTRY(SCSIRequest) next; +}; + +#define TYPE_SCSI_DEVICE "scsi-device" +#define SCSI_DEVICE(obj) \ + OBJECT_CHECK(SCSIDevice, (obj), TYPE_SCSI_DEVICE) +#define SCSI_DEVICE_CLASS(klass) \ + OBJECT_CLASS_CHECK(SCSIDeviceClass, (klass), TYPE_SCSI_DEVICE) +#define SCSI_DEVICE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(SCSIDeviceClass, (obj), TYPE_SCSI_DEVICE) + +typedef struct SCSIDeviceClass { + DeviceClass parent_class; + int (*init)(SCSIDevice *dev); + void (*destroy)(SCSIDevice *s); + SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun, + uint8_t *buf, void *hba_private); + void (*unit_attention_reported)(SCSIDevice *s); +} SCSIDeviceClass; + +struct SCSIDevice +{ + DeviceState qdev; + VMChangeStateEntry *vmsentry; + QEMUBH *bh; + uint32_t id; + BlockConf conf; + SCSISense unit_attention; + bool sense_is_ua; + uint8_t sense[SCSI_SENSE_BUF_SIZE]; + uint32_t sense_len; + QTAILQ_HEAD(, SCSIRequest) requests; + uint32_t channel; + uint32_t lun; + int blocksize; + int type; + uint64_t max_lba; +}; + +extern const VMStateDescription vmstate_scsi_device; + +#define VMSTATE_SCSI_DEVICE(_field, _state) { \ + .name = (stringify(_field)), \ + .size = sizeof(SCSIDevice), \ + .vmsd = &vmstate_scsi_device, \ + .flags = VMS_STRUCT, \ + .offset = vmstate_offset_value(_state, _field, SCSIDevice), \ +} + +/* cdrom.c */ +int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track); +int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num); + +/* scsi-bus.c */ +struct SCSIReqOps { + size_t size; + void (*free_req)(SCSIRequest *req); + int32_t (*send_command)(SCSIRequest *req, uint8_t *buf); + void (*read_data)(SCSIRequest *req); + void (*write_data)(SCSIRequest *req); + void (*cancel_io)(SCSIRequest *req); + uint8_t *(*get_buf)(SCSIRequest *req); + + void (*save_request)(QEMUFile *f, SCSIRequest *req); + void (*load_request)(QEMUFile *f, SCSIRequest *req); +}; + +struct SCSIBusInfo { + int tcq; + int max_channel, max_target, max_lun; + void (*transfer_data)(SCSIRequest *req, uint32_t arg); + void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid); + void (*cancel)(SCSIRequest *req); + void (*hotplug)(SCSIBus *bus, SCSIDevice *dev); + void (*hot_unplug)(SCSIBus *bus, SCSIDevice *dev); + void (*change)(SCSIBus *bus, SCSIDevice *dev, SCSISense sense); + QEMUSGList *(*get_sg_list)(SCSIRequest *req); + + void (*save_request)(QEMUFile *f, SCSIRequest *req); + void *(*load_request)(QEMUFile *f, SCSIRequest *req); + void (*free_request)(SCSIBus *bus, void *priv); +}; + +#define TYPE_SCSI_BUS "SCSI" +#define SCSI_BUS(obj) OBJECT_CHECK(SCSIBus, (obj), TYPE_SCSI_BUS) + +struct SCSIBus { + BusState qbus; + int busnr; + + SCSISense unit_attention; + const SCSIBusInfo *info; +}; + +void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info); + +static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) +{ + return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); +} + +SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, + int unit, bool removable, int bootindex, + const char *serial); +int scsi_bus_legacy_handle_cmdline(SCSIBus *bus); + +/* + * Predefined sense codes + */ + +/* No sense data available */ +extern const struct SCSISense sense_code_NO_SENSE; +/* LUN not ready, Manual intervention required */ +extern const struct SCSISense sense_code_LUN_NOT_READY; +/* LUN not ready, Medium not present */ +extern const struct SCSISense sense_code_NO_MEDIUM; +/* LUN not ready, medium removal prevented */ +extern const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED; +/* Hardware error, internal target failure */ +extern const struct SCSISense sense_code_TARGET_FAILURE; +/* Illegal request, invalid command operation code */ +extern const struct SCSISense sense_code_INVALID_OPCODE; +/* Illegal request, LBA out of range */ +extern const struct SCSISense sense_code_LBA_OUT_OF_RANGE; +/* Illegal request, Invalid field in CDB */ +extern const struct SCSISense sense_code_INVALID_FIELD; +/* Illegal request, Invalid field in parameter list */ +extern const struct SCSISense sense_code_INVALID_PARAM; +/* Illegal request, Parameter list length error */ +extern const struct SCSISense sense_code_INVALID_PARAM_LEN; +/* Illegal request, LUN not supported */ +extern const struct SCSISense sense_code_LUN_NOT_SUPPORTED; +/* Illegal request, Saving parameters not supported */ +extern const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED; +/* Illegal request, Incompatible format */ +extern const struct SCSISense sense_code_INCOMPATIBLE_FORMAT; +/* Illegal request, medium removal prevented */ +extern const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED; +/* Command aborted, I/O process terminated */ +extern const struct SCSISense sense_code_IO_ERROR; +/* Command aborted, I_T Nexus loss occurred */ +extern const struct SCSISense sense_code_I_T_NEXUS_LOSS; +/* Command aborted, Logical Unit failure */ +extern const struct SCSISense sense_code_LUN_FAILURE; +/* LUN not ready, Capacity data has changed */ +extern const struct SCSISense sense_code_CAPACITY_CHANGED; +/* LUN not ready, Medium not present */ +extern const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM; +/* Unit attention, Power on, reset or bus device reset occurred */ +extern const struct SCSISense sense_code_RESET; +/* Unit attention, Medium may have changed*/ +extern const struct SCSISense sense_code_MEDIUM_CHANGED; +/* Unit attention, Reported LUNs data has changed */ +extern const struct SCSISense sense_code_REPORTED_LUNS_CHANGED; +/* Unit attention, Device internal reset */ +extern const struct SCSISense sense_code_DEVICE_INTERNAL_RESET; +/* Data Protection, Write Protected */ +extern const struct SCSISense sense_code_WRITE_PROTECTED; + +#define SENSE_CODE(x) sense_code_ ## x + +uint32_t scsi_data_cdb_length(uint8_t *buf); +uint32_t scsi_cdb_length(uint8_t *buf); +int scsi_sense_valid(SCSISense sense); +int scsi_build_sense(uint8_t *in_buf, int in_len, + uint8_t *buf, int len, bool fixed); + +SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, + uint32_t tag, uint32_t lun, void *hba_private); +SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, + uint8_t *buf, void *hba_private); +int32_t scsi_req_enqueue(SCSIRequest *req); +void scsi_req_free(SCSIRequest *req); +SCSIRequest *scsi_req_ref(SCSIRequest *req); +void scsi_req_unref(SCSIRequest *req); + +void scsi_req_build_sense(SCSIRequest *req, SCSISense sense); +void scsi_req_print(SCSIRequest *req); +void scsi_req_continue(SCSIRequest *req); +void scsi_req_data(SCSIRequest *req, int len); +void scsi_req_complete(SCSIRequest *req, int status); +uint8_t *scsi_req_get_buf(SCSIRequest *req); +int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len); +void scsi_req_abort(SCSIRequest *req, int status); +void scsi_req_cancel(SCSIRequest *req); +void scsi_req_retry(SCSIRequest *req); +void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense); +void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense); +void scsi_device_report_change(SCSIDevice *dev, SCSISense sense); +int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); +SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); + +/* scsi-generic.c. */ +extern const SCSIReqOps scsi_generic_req_ops; + +#endif |