@@ -74,7 +74,7 @@ struct SCSIDiskClass {
*/
DMAIOFunc *dma_readv;
DMAIOFunc *dma_writev;
- bool (*need_fua_emulation)(SCSICommand *cmd);
+ bool (*need_fua)(SCSICommand *cmd);
void (*update_sense)(SCSIRequest *r);
};
@@ -85,7 +85,7 @@ typedef struct SCSIDiskReq {
uint32_t sector_count;
uint32_t buflen;
bool started;
- bool need_fua_emulation;
+ bool need_fua;
struct iovec iov;
QEMUIOVector qiov;
BlockAcctCookie acct;
@@ -389,24 +389,6 @@ static bool scsi_is_cmd_fua(SCSICommand *cmd)
}
}
-static void scsi_write_do_fua(SCSIDiskReq *r)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- assert(r->req.aiocb == NULL);
- assert(!r->req.io_canceled);
-
- if (r->need_fua_emulation) {
- block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
- BLOCK_ACCT_FLUSH);
- r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete, r);
- return;
- }
-
- scsi_req_complete(&r->req, GOOD);
- scsi_req_unref(&r->req);
-}
-
static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret)
{
assert(r->req.aiocb == NULL);
@@ -416,12 +398,7 @@ static void scsi_dma_complete_noio(SCSIDiskReq *r, int ret)
r->sector += r->sector_count;
r->sector_count = 0;
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- scsi_write_do_fua(r);
- return;
- } else {
- scsi_req_complete(&r->req, GOOD);
- }
+ scsi_req_complete(&r->req, GOOD);
done:
scsi_req_unref(&r->req);
@@ -564,7 +541,7 @@ static void scsi_read_data(SCSIRequest *req)
first = !r->started;
r->started = true;
- if (first && r->need_fua_emulation) {
+ if (first && r->need_fua) {
block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0,
BLOCK_ACCT_FLUSH);
r->req.aiocb = blk_aio_flush(s->qdev.conf.blk, scsi_do_read_cb, r);
@@ -589,8 +566,7 @@ static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)
r->sector += n;
r->sector_count -= n;
if (r->sector_count == 0) {
- scsi_write_do_fua(r);
- return;
+ scsi_req_complete(&r->req, GOOD);
} else {
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
trace_scsi_disk_write_complete_noio(r->req.tag, r->qiov.size);
@@ -2391,7 +2367,7 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
return 0;
}
- r->need_fua_emulation = sdc->need_fua_emulation(&r->req.cmd);
+ r->need_fua = sdc->need_fua(&r->req.cmd);
if (r->sector_count == 0) {
scsi_req_complete(&r->req, GOOD);
}
@@ -3137,7 +3113,8 @@ BlockAIOCB *scsi_dma_writev(int64_t offset, QEMUIOVector *iov,
{
SCSIDiskReq *r = opaque;
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque);
+ int flags = r->need_fua ? BDRV_REQ_FUA : 0;
+ return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, flags, cb, cb_opaque);
}
static char *scsi_property_get_loadparm(Object *obj, Error **errp)
@@ -3186,7 +3163,7 @@ static void scsi_disk_base_class_initfn(ObjectClass *klass, void *data)
device_class_set_legacy_reset(dc, scsi_disk_reset);
sdc->dma_readv = scsi_dma_readv;
sdc->dma_writev = scsi_dma_writev;
- sdc->need_fua_emulation = scsi_is_cmd_fua;
+ sdc->need_fua = scsi_is_cmd_fua;
}
static const TypeInfo scsi_disk_base_info = {
@@ -3338,7 +3315,7 @@ static void scsi_block_class_initfn(ObjectClass *klass, void *data)
sdc->dma_readv = scsi_block_dma_readv;
sdc->dma_writev = scsi_block_dma_writev;
sdc->update_sense = scsi_block_update_sense;
- sdc->need_fua_emulation = scsi_block_no_fua;
+ sdc->need_fua = scsi_block_no_fua;
dc->desc = "SCSI block device passthrough";
device_class_set_props(dc, scsi_block_properties);
dc->vmsd = &vmstate_scsi_disk_state;
Simply propagate the FUA flag on write requests to the driver. The block layer will emulate it if necessary. Signed-off-by: Alberto Faria <afaria@redhat.com> --- hw/scsi/scsi-disk.c | 43 ++++++++++--------------------------------- 1 file changed, 10 insertions(+), 33 deletions(-)