scsi: Use device_cold_reset() and bus_cold_reset()

In the SCSI subsystem we currently use the legacy functions
qdev_reset_all() and qbus_reset_all().  These perform a recursive
reset, starting from either a qbus or a qdev.  However they do not
permit any of the devices in the tree to use three-phase reset,
because device reset goes through the device_legacy_reset() function
that only calls the single DeviceClass::reset method.

Switch to using the device_cold_reset() and bus_cold_reset()
functions.  These also perform a recursive reset, where first the
children are reset and then finally the parent, but they use the new
(...in 2020...) Resettable mechanism, which supports both the old
style single-reset method and also the new 3-phase reset handling.

Since no devices attached to SCSI buses currently try to use 3-phase
reset, this should be a no-behaviour-change commit which just reduces
the use of a deprecated API.

Commit created with:
  sed -i -e 's/qdev_reset_all/device_cold_reset/g;s/qbus_reset_all/bus_cold_reset/g' hw/scsi/*.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20221013160623.1296109-2-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Maydell 2022-10-13 17:06:22 +01:00 committed by Paolo Bonzini
parent 35fd22b01d
commit 4a5fc890b1
7 changed files with 14 additions and 14 deletions

View file

@ -941,7 +941,7 @@ static void esp_soft_reset(ESPState *s)
static void esp_bus_reset(ESPState *s)
{
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
}
static void parent_esp_reset(ESPState *s, int irq, int level)

View file

@ -1868,7 +1868,7 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
}
if (val & LSI_SCNTL1_RST) {
if (!(s->sstat0 & LSI_SSTAT0_RST)) {
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
s->sstat0 |= LSI_SSTAT0_RST;
lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0);
}
@ -1926,7 +1926,7 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
lsi_execute_script(s);
}
if (val & LSI_ISTAT0_SRST) {
qdev_reset_all(DEVICE(s));
device_cold_reset(DEVICE(s));
}
break;
case 0x16: /* MBOX0 */

View file

@ -1484,7 +1484,7 @@ static int megasas_cluster_reset_ld(MegasasState *s, MegasasCmd *cmd)
MegasasCmd *tmp_cmd = &s->frames[i];
if (tmp_cmd->req && tmp_cmd->req->dev->id == target_id) {
SCSIDevice *d = tmp_cmd->req->dev;
qdev_reset_all(&d->qdev);
device_cold_reset(&d->qdev);
}
}
return MFI_STAT_OK;

View file

@ -522,7 +522,7 @@ reply_maybe_async:
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN;
goto out;
}
qdev_reset_all(&sdev->qdev);
device_cold_reset(&sdev->qdev);
break;
case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
@ -538,13 +538,13 @@ reply_maybe_async:
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
sdev = SCSI_DEVICE(kid->child);
if (sdev->channel == 0 && sdev->id == req->TargetID) {
qdev_reset_all(kid->child);
device_cold_reset(kid->child);
}
}
break;
case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
break;
default:
@ -807,7 +807,7 @@ static void mptsas_soft_reset(MPTSASState *s)
s->intr_mask = MPI_HIM_DIM | MPI_HIM_RIM;
mptsas_update_interrupt(s);
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
s->intr_status = 0;
s->intr_mask = save_mask;

View file

@ -865,7 +865,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
break;
}
qdev_reset_all(&d->qdev);
device_cold_reset(&d->qdev);
break;
case SRP_TSK_ABORT_TASK_SET:

View file

@ -365,7 +365,7 @@ static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
goto incorrect_lun;
}
s->resetting++;
qdev_reset_all(&d->qdev);
device_cold_reset(&d->qdev);
s->resetting--;
break;
@ -417,7 +417,7 @@ static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
QTAILQ_FOREACH_RCU(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *d1 = SCSI_DEVICE(kid->child);
if (d1->channel == 0 && d1->id == target) {
qdev_reset_all(&d1->qdev);
device_cold_reset(&d1->qdev);
}
}
rcu_read_unlock();
@ -831,7 +831,7 @@ static void virtio_scsi_reset(VirtIODevice *vdev)
assert(!s->dataplane_started);
s->resetting++;
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
s->resetting--;
vs->sense_size = VIRTIO_SCSI_SENSE_DEFAULT_SIZE;

View file

@ -445,7 +445,7 @@ static void
pvscsi_reset_adapter(PVSCSIState *s)
{
s->resetting++;
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
s->resetting--;
pvscsi_process_completion_queue(s);
assert(QTAILQ_EMPTY(&s->pending_queue));
@ -894,7 +894,7 @@ pvscsi_on_cmd_reset_bus(PVSCSIState *s)
trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_RESET_BUS");
s->resetting++;
qbus_reset_all(BUS(&s->bus));
bus_cold_reset(BUS(&s->bus));
s->resetting--;
return PVSCSI_COMMAND_PROCESSING_SUCCEEDED;
}