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scsi-generic: drop SCSIGenericState 

It is not needed, because s->bs is already stored in SCSIDevice, and
can be reached from the conf.bs member.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-10-12 12:49:35 +02:00 committed by Kevin Wolf
parent 628e95b616
commit 8869e10397
1 changed files with 40 additions and 50 deletions
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90
hw/scsi-generic.c
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@ -46,8 +46,6 @@ do { fprintf(stderr, "scsi-generic: " fmt , ## __VA_ARGS__); } while (0)
#define MAX_UINT ((unsigned int)-1)
#endif
typedef struct SCSIGenericState SCSIGenericState;
typedef struct SCSIGenericReq {
SCSIRequest req;
uint8_t *buf;
@ -56,12 +54,6 @@ typedef struct SCSIGenericReq {
sg_io_hdr_t io_header;
} SCSIGenericReq;
struct SCSIGenericState
{
SCSIDevice qdev;
BlockDriverState *bs;
};
static void scsi_free_request(SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
@ -174,7 +166,7 @@ static void scsi_read_complete(void * opaque, int ret)
static void scsi_read_data(SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev);
SCSIDevice *s = r->req.dev;
int ret;
DPRINTF("scsi_read_data 0x%x\n", req->tag);
@ -183,17 +175,16 @@ static void scsi_read_data(SCSIRequest *req)
return;
}
ret = execute_command(s->bs, r, SG_DXFER_FROM_DEV, scsi_read_complete);
ret = execute_command(s->conf.bs, r, SG_DXFER_FROM_DEV, scsi_read_complete);
if (ret < 0) {
scsi_command_complete(r, ret);
return;
}
}
static void scsi_write_complete(void * opaque, int ret)
{
SCSIGenericReq *r = (SCSIGenericReq *)opaque;
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, r->req.dev);
SCSIDevice *s = r->req.dev;
DPRINTF("scsi_write_complete() ret = %d\n", ret);
r->req.aiocb = NULL;
@ -204,9 +195,9 @@ static void scsi_write_complete(void * opaque, int ret)
}
if (r->req.cmd.buf[0] == MODE_SELECT && r->req.cmd.buf[4] == 12 &&
s->qdev.type == TYPE_TAPE) {
s->qdev.blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11];
DPRINTF("block size %d\n", s->qdev.blocksize);
s->type == TYPE_TAPE) {
s->blocksize = (r->buf[9] << 16) | (r->buf[10] << 8) | r->buf[11];
DPRINTF("block size %d\n", s->blocksize);
}
scsi_command_complete(r, ret);
@ -216,8 +207,8 @@ static void scsi_write_complete(void * opaque, int ret)
The transfer may complete asynchronously. */
static void scsi_write_data(SCSIRequest *req)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev);
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
SCSIDevice *s = r->req.dev;
int ret;
DPRINTF("scsi_write_data 0x%x\n", req->tag);
@ -227,7 +218,7 @@ static void scsi_write_data(SCSIRequest *req)
return;
}
ret = execute_command(s->bs, r, SG_DXFER_TO_DEV, scsi_write_complete);
ret = execute_command(s->conf.bs, r, SG_DXFER_TO_DEV, scsi_write_complete);
if (ret < 0) {
scsi_command_complete(r, ret);
}
@ -261,8 +252,8 @@ static void scsi_req_fixup(SCSIRequest *req)
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *cmd)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev);
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
SCSIDevice *s = r->req.dev;
int ret;
scsi_req_fixup(&r->req);
@ -285,7 +276,7 @@ static int32_t scsi_send_command(SCSIRequest *req, uint8_t *cmd)
g_free(r->buf);
r->buflen = 0;
r->buf = NULL;
ret = execute_command(s->bs, r, SG_DXFER_NONE, scsi_command_complete);
ret = execute_command(s->conf.bs, r, SG_DXFER_NONE, scsi_command_complete);
if (ret < 0) {
scsi_command_complete(r, ret);
return 0;
@ -373,77 +364,76 @@ static int get_stream_blocksize(BlockDriverState *bdrv)
static void scsi_generic_reset(DeviceState *dev)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev.qdev, dev);
SCSIDevice *s = DO_UPCAST(SCSIDevice, qdev, dev);
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET));
scsi_device_purge_requests(s, SENSE_CODE(RESET));
}
static void scsi_destroy(SCSIDevice *d)
static void scsi_destroy(SCSIDevice *s)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE));
blockdev_mark_auto_del(s->qdev.conf.bs);
scsi_device_purge_requests(s, SENSE_CODE(NO_SENSE));
blockdev_mark_auto_del(s->conf.bs);
}
static int scsi_generic_initfn(SCSIDevice *dev)
static int scsi_generic_initfn(SCSIDevice *s)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, dev);
int sg_version;
struct sg_scsi_id scsiid;
if (!s->qdev.conf.bs) {
if (!s->conf.bs) {
error_report("scsi-generic: drive property not set");
return -1;
}
s->bs = s->qdev.conf.bs;
/* check we are really using a /dev/sg* file */
if (!bdrv_is_sg(s->bs)) {
if (!bdrv_is_sg(s->conf.bs)) {
error_report("scsi-generic: not /dev/sg*");
return -1;
}
if (bdrv_get_on_error(s->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
if (bdrv_get_on_error(s->conf.bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
error_report("Device doesn't support drive option werror");
return -1;
}
if (bdrv_get_on_error(s->bs, 1) != BLOCK_ERR_REPORT) {
if (bdrv_get_on_error(s->conf.bs, 1) != BLOCK_ERR_REPORT) {
error_report("Device doesn't support drive option rerror");
return -1;
}
/* check we are using a driver managing SG_IO (version 3 and after */
if (bdrv_ioctl(s->bs, SG_GET_VERSION_NUM, &sg_version) < 0 ||
if (bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 ||
sg_version < 30000) {
error_report("scsi-generic: scsi generic interface too old");
return -1;
}
/* get LUN of the /dev/sg? */
if (bdrv_ioctl(s->bs, SG_GET_SCSI_ID, &scsiid)) {
if (bdrv_ioctl(s->conf.bs, SG_GET_SCSI_ID, &scsiid)) {
error_report("scsi-generic: SG_GET_SCSI_ID ioctl failed");
return -1;
}
/* define device state */
s->qdev.type = scsiid.scsi_type;
DPRINTF("device type %d\n", s->qdev.type);
if (s->qdev.type == TYPE_TAPE) {
s->qdev.blocksize = get_stream_blocksize(s->bs);
if (s->qdev.blocksize == -1)
s->qdev.blocksize = 0;
s->type = scsiid.scsi_type;
DPRINTF("device type %d\n", s->type);
if (s->type == TYPE_TAPE) {
s->blocksize = get_stream_blocksize(s->conf.bs);
if (s->blocksize == -1) {
s->blocksize = 0;
}
} else {
s->qdev.blocksize = get_blocksize(s->bs);
s->blocksize = get_blocksize(s->conf.bs);
/* removable media returns 0 if not present */
if (s->qdev.blocksize <= 0) {
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM)
s->qdev.blocksize = 2048;
else
s->qdev.blocksize = 512;
if (s->blocksize <= 0) {
if (s->type == TYPE_ROM || s->type == TYPE_WORM) {
s->blocksize = 2048;
} else {
s->blocksize = 512;
}
}
}
DPRINTF("block size %d\n", s->qdev.blocksize);
DPRINTF("block size %d\n", s->blocksize);
return 0;
}
@ -469,13 +459,13 @@ static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
static SCSIDeviceInfo scsi_generic_info = {
.qdev.name = "scsi-generic",
.qdev.desc = "pass through generic scsi device (/dev/sg*)",
.qdev.size = sizeof(SCSIGenericState),
.qdev.size = sizeof(SCSIDevice),
.qdev.reset = scsi_generic_reset,
.init = scsi_generic_initfn,
.destroy = scsi_destroy,
.alloc_req = scsi_new_request,
.qdev.props = (Property[]) {
DEFINE_BLOCK_PROPERTIES(SCSIGenericState, qdev.conf),
DEFINE_BLOCK_PROPERTIES(SCSIDevice, conf),
DEFINE_PROP_END_OF_LIST(),
},
};