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, ...         */

};

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);

};

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);

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

void scsi_req_enqueue(SCSIRequest *req);

void scsi_req_free(SCSIRequest *req);

void scsi_req_dequeue(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_device_purge_requests(SCSIDevice *sdev);

#endif