scsi: qla2xxx: Add ability to send PRLO
Add ability to send Implicit PRLO to flush IOs
from FW back to driver.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 39d1edc..56bff78 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -278,6 +278,65 @@ qla2x00_async_logout(struct scsi_qla_host *vha, fc_port_t *fcport)
fcport->flags &= ~FCF_ASYNC_SENT;
return rval;
}
+
+void
+qla2x00_async_prlo_done(struct scsi_qla_host *vha, fc_port_t *fcport,
+ uint16_t *data)
+{
+ /* Don't re-login in target mode */
+ if (!fcport->tgt_session)
+ qla2x00_mark_device_lost(vha, fcport, 1, 0);
+ qlt_logo_completion_handler(fcport, data[0]);
+}
+
+static void
+qla2x00_async_prlo_sp_done(void *s, int res)
+{
+ srb_t *sp = (srb_t *)s;
+ struct srb_iocb *lio = &sp->u.iocb_cmd;
+ struct scsi_qla_host *vha = sp->vha;
+
+ if (!test_bit(UNLOADING, &vha->dpc_flags))
+ qla2x00_post_async_prlo_done_work(sp->fcport->vha, sp->fcport,
+ lio->u.logio.data);
+ sp->free(sp);
+}
+
+int
+qla2x00_async_prlo(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+ srb_t *sp;
+ struct srb_iocb *lio;
+ int rval;
+
+ rval = QLA_FUNCTION_FAILED;
+ sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
+ if (!sp)
+ goto done;
+
+ sp->type = SRB_PRLO_CMD;
+ sp->name = "prlo";
+ qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
+
+ lio = &sp->u.iocb_cmd;
+ lio->timeout = qla2x00_async_iocb_timeout;
+ sp->done = qla2x00_async_prlo_sp_done;
+ rval = qla2x00_start_sp(sp);
+ if (rval != QLA_SUCCESS)
+ goto done_free_sp;
+
+ ql_dbg(ql_dbg_disc, vha, 0x2070,
+ "Async-prlo - hdl=%x loop-id=%x portid=%02x%02x%02x.\n",
+ sp->handle, fcport->loop_id, fcport->d_id.b.domain,
+ fcport->d_id.b.area, fcport->d_id.b.al_pa);
+ return rval;
+
+done_free_sp:
+ sp->free(sp);
+done:
+ return rval;
+}
+
static
void qla24xx_handle_adisc_event(scsi_qla_host_t *vha, struct event_arg *ea)
{