Archipelago » qemu

#ifndef QEMU_HW_SCSI_H

#define QEMU_HW_SCSI_H

#include "qdev.h"

#include "block.h"

#include "block_int.h"

#define MAX_SCSI_DEVS        255

#define SCSI_CMD_BUF_SIZE     16

/* scsi-disk.c */

enum scsi_reason {

    SCSI_REASON_DONE, /* Command complete.  */

    SCSI_REASON_DATA  /* Transfer complete, more data required.  */

};

typedef struct SCSIBus SCSIBus;

typedef struct SCSIBusOps SCSIBusOps;

typedef struct SCSIDevice SCSIDevice;

typedef struct SCSIDeviceInfo SCSIDeviceInfo;

typedef struct SCSIRequest SCSIRequest;

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;

struct SCSIRequest {

    SCSIBus           *bus;

    SCSIDevice        *dev;

    uint32_t          refcount;

    uint32_t          tag;

    uint32_t          lun;

    uint32_t          status;

    struct {

        uint8_t buf[SCSI_CMD_BUF_SIZE];

        int len;

        size_t xfer;

        uint64_t lba;

        enum SCSIXferMode mode;

    } cmd;

    BlockDriverAIOCB  *aiocb;

    bool enqueued;

    QTAILQ_ENTRY(SCSIRequest) next;

};

struct SCSIDevice

{

    DeviceState qdev;

    uint32_t id;

    BlockConf conf;

    SCSIDeviceInfo *info;

    QTAILQ_HEAD(, SCSIRequest) requests;

    int blocksize;

    int type;

};

/* 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 */

typedef int (*scsi_qdev_initfn)(SCSIDevice *dev);

struct SCSIDeviceInfo {

    DeviceInfo qdev;

    scsi_qdev_initfn init;

    void (*destroy)(SCSIDevice *s);

    SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun);

    void (*free_req)(SCSIRequest *req);

    int32_t (*send_command)(SCSIRequest *req, uint8_t *buf);

    void (*read_data)(SCSIRequest *req);

    int (*write_data)(SCSIRequest *req);

    void (*cancel_io)(SCSIRequest *req);

    uint8_t *(*get_buf)(SCSIRequest *req);

};

struct SCSIBusOps {

    void (*complete)(SCSIRequest *req, int reason, uint32_t arg);

    void (*cancel)(SCSIRequest *req);

};

struct SCSIBus {

    BusState qbus;

    int busnr;

    int tcq, ndev;

    const SCSIBusOps *ops;

    SCSIDevice *devs[MAX_SCSI_DEVS];

};

void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev,

                  const SCSIBusOps *ops);

void scsi_qdev_register(SCSIDeviceInfo *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 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;

/* 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, LUN not supported */

extern const struct SCSISense sense_code_LUN_NOT_SUPPORTED;

/* 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;

#define SENSE_CODE(x) sense_code_ ## x

int scsi_build_sense(SCSISense sense, uint8_t *buf, int len, int fixed);

int scsi_sense_valid(SCSISense sense);

SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);

int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf);

void scsi_req_free(SCSIRequest *req);

SCSIRequest *scsi_req_ref(SCSIRequest *req);

void scsi_req_unref(SCSIRequest *req);

int scsi_req_parse(SCSIRequest *req, uint8_t *buf);

void scsi_req_print(SCSIRequest *req);

void scsi_req_data(SCSIRequest *req, int len);

void scsi_req_complete(SCSIRequest *req);

void scsi_req_abort(SCSIRequest *req, int status);

void scsi_req_cancel(SCSIRequest *req);

void scsi_device_purge_requests(SCSIDevice *sdev);

#endif