With the upcoming sglist support, HBAs will not see any transfer_data
call and will not have a way to detect short transfers. So pass the
residual amount of data upon command completion.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
hw/esp.c | 3 ++-
hw/lsi53c895a.c | 2 +-
hw/scsi-bus.c | 12 ++++++++----
hw/scsi.h | 3 ++-
hw/spapr_vscsi.c | 2 +-
hw/usb-msd.c | 2 +-
6 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/hw/esp.c b/hw/esp.c
index 2dda8e3..8d73e56 100644
--- a/hw/esp.c
+++ b/hw/esp.c
@@ -390,7 +390,8 @@ static void esp_do_dma(ESPState *s)
esp_dma_done(s);
}
-static void esp_command_complete(SCSIRequest *req, uint32_t status)
+static void esp_command_complete(SCSIRequest *req, uint32_t status,
+ size_t resid)
{
ESPState *s = DO_UPCAST(ESPState, busdev.qdev, req->bus->qbus.parent);
diff --git a/hw/lsi53c895a.c b/hw/lsi53c895a.c
index 0acd1d0..edc09b7 100644
--- a/hw/lsi53c895a.c
+++ b/hw/lsi53c895a.c
@@ -699,7 +699,7 @@ static int lsi_queue_req(LSIState *s, SCSIRequest *req,
uint32_t len)
}
/* Callback to indicate that the SCSI layer has completed a command. */
-static void lsi_command_complete(SCSIRequest *req, uint32_t status)
+static void lsi_command_complete(SCSIRequest *req, uint32_t status, size_t
resid)
{
LSIState *s = DO_UPCAST(LSIState, dev.qdev, req->bus->qbus.parent);
int out;
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index b3e97ce..eb97c87 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -533,6 +533,8 @@ SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag,
uint32_t lun,
}
req->cmd = cmd;
+ req->resid = req->cmd.xfer;
+
switch (buf[0]) {
case INQUIRY:
trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]);
@@ -1275,10 +1277,12 @@ void scsi_req_data(SCSIRequest *req, int len)
{
if (req->io_canceled) {
trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len);
- } else {
- trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
- req->bus->info->transfer_data(req, len);
+ return;
}
+ trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
+ assert(req->cmd.mode != SCSI_XFER_NONE);
+ req->resid -= len;
+ req->bus->info->transfer_data(req, len);
}
void scsi_req_print(SCSIRequest *req)
@@ -1337,7 +1341,7 @@ void scsi_req_complete(SCSIRequest *req, int status)
scsi_req_ref(req);
scsi_req_dequeue(req);
- req->bus->info->complete(req, req->status);
+ req->bus->info->complete(req, req->status, req->resid);
scsi_req_unref(req);
}
diff --git a/hw/scsi.h b/hw/scsi.h
index dc72b6f..8722ef9 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -46,6 +46,7 @@ struct SCSIRequest {
uint32_t tag;
uint32_t lun;
uint32_t status;
+ size_t resid;
SCSICommand cmd;
BlockDriverAIOCB *aiocb;
uint8_t sense[SCSI_SENSE_BUF_SIZE];
@@ -112,7 +113,7 @@ struct SCSIBusInfo {
int tcq;
int max_channel, max_target, max_lun;
void (*transfer_data)(SCSIRequest *req, uint32_t arg);
- void (*complete)(SCSIRequest *req, uint32_t arg);
+ void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid);
void (*cancel)(SCSIRequest *req);
};
diff --git a/hw/spapr_vscsi.c b/hw/spapr_vscsi.c
index ffce261..2167017 100644
--- a/hw/spapr_vscsi.c
+++ b/hw/spapr_vscsi.c
@@ -494,7 +494,7 @@ static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t
len)
}
/* Callback to indicate that the SCSI layer has completed a transfer. */
-static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status)
+static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t
resid)
{
VSCSIState *s = DO_UPCAST(VSCSIState, vdev.qdev, sreq->bus->qbus.parent);
vscsi_req *req = sreq->hba_private;
diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index c933efe..5fbd2d0 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -223,7 +223,7 @@ static void usb_msd_transfer_data(SCSIRequest *req,
uint32_t len)
}
}
-static void usb_msd_command_complete(SCSIRequest *req, uint32_t status)
+static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t
resid)
{
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
USBPacket *p = s->packet;
--
1.7.7.6
