160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
#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 "block_int.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 SCSIBusOps SCSIBusOps;
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typedef struct SCSIDevice SCSIDevice;
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typedef struct SCSIDeviceInfo SCSIDeviceInfo;
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typedef struct SCSIRequest SCSIRequest;
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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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struct SCSIRequest {
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SCSIBus *bus;
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SCSIDevice *dev;
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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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struct {
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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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} cmd;
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BlockDriverAIOCB *aiocb;
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bool enqueued;
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QTAILQ_ENTRY(SCSIRequest) next;
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};
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struct SCSIDevice
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{
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DeviceState qdev;
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uint32_t id;
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BlockConf conf;
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SCSIDeviceInfo *info;
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QTAILQ_HEAD(, SCSIRequest) requests;
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int blocksize;
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int type;
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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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typedef int (*scsi_qdev_initfn)(SCSIDevice *dev);
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struct SCSIDeviceInfo {
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DeviceInfo qdev;
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scsi_qdev_initfn init;
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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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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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int (*get_sense)(SCSIRequest *req, uint8_t *buf, int len);
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};
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struct SCSIBusOps {
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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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int tcq, ndev;
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const SCSIBusOps *ops;
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SCSIDevice *devs[MAX_SCSI_DEVS];
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};
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void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,
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const SCSIBusOps *ops);
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void scsi_qdev_register(SCSIDeviceInfo *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);
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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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/* 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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/* 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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#define SENSE_CODE(x) sense_code_ ## x
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int scsi_build_sense(SCSISense sense, uint8_t *buf, int len, int fixed);
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int scsi_sense_valid(SCSISense sense);
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SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
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SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun);
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int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf);
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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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int scsi_req_parse(SCSIRequest *req, uint8_t *buf);
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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);
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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_device_purge_requests(SCSIDevice *sdev);
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#endif
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