megasas: Clear unit attention on initial reset

The EFI firmware doesn't handle unit attentions properly,
so we need to clear the Power On/Reset unit attention upon
initial reset.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 58e29aed71..57d52885b7 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -2202,11 +2202,26 @@ static void megasas_soft_reset(MegasasState *s)
     int i;
     MegasasCmd *cmd;
 
-    trace_megasas_reset();
+    trace_megasas_reset(s->fw_state);
     for (i = 0; i < s->fw_cmds; i++) {
         cmd = &s->frames[i];
         megasas_abort_command(cmd);
     }
+    if (s->fw_state == MFI_FWSTATE_READY) {
+        BusChild *kid;
+
+        /*
+         * The EFI firmware doesn't handle UA,
+         * so we need to clear the Power On/Reset UA
+         * after the initial reset.
+         */
+        QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
+            SCSIDevice *sdev = DO_UPCAST(SCSIDevice, qdev, kid->child);
+
+            sdev->unit_attention = SENSE_CODE(NO_SENSE);
+            scsi_device_unit_attention_reported(sdev);
+        }
+    }
     megasas_reset_frames(s);
     s->reply_queue_len = s->fw_cmds;
     s->reply_queue_pa = 0;
@@ -2334,6 +2349,7 @@ static int megasas_scsi_init(PCIDevice *dev)
         msix_vector_use(dev, 0);
     }
 
+    s->fw_state = MFI_FWSTATE_READY;
     if (!s->sas_addr) {
         s->sas_addr = ((NAA_LOCALLY_ASSIGNED_ID << 24) |
                        IEEE_COMPANY_LOCALLY_ASSIGNED) << 36;