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[Qemu-devel] [PULL 3/5] virtio-ccw: respond to READ_STATUS command
From: |
Cornelia Huck |
Subject: |
[Qemu-devel] [PULL 3/5] virtio-ccw: respond to READ_STATUS command |
Date: |
Mon, 19 Sep 2016 11:14:47 +0200 |
From: Pierre Morel <address@hidden>
This patch adds the response to the READ_STATUS CCW command.
Signed-off-by: Pierre Morel <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
---
hw/s390x/virtio-ccw.c | 20 ++++++++++++++++++++
hw/s390x/virtio-ccw.h | 1 +
2 files changed, 21 insertions(+)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 9678956..0a997e1 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -455,6 +455,26 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
}
}
break;
+ case CCW_CMD_READ_STATUS:
+ if (check_len) {
+ if (ccw.count != sizeof(status)) {
+ ret = -EINVAL;
+ break;
+ }
+ } else if (ccw.count < sizeof(status)) {
+ /* Can't execute command. */
+ ret = -EINVAL;
+ break;
+ }
+ if (!ccw.cda) {
+ ret = -EFAULT;
+ } else {
+ address_space_stb(&address_space_memory, ccw.cda, vdev->status,
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);;
+ ret = 0;
+ }
+ break;
case CCW_CMD_WRITE_STATUS:
if (check_len) {
if (ccw.count != sizeof(status)) {
diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h
index b58ab21..6ef940a 100644
--- a/hw/s390x/virtio-ccw.h
+++ b/hw/s390x/virtio-ccw.h
@@ -45,6 +45,7 @@
#define CCW_CMD_SET_IND 0x43
#define CCW_CMD_SET_CONF_IND 0x53
#define CCW_CMD_READ_VQ_CONF 0x32
+#define CCW_CMD_READ_STATUS 0x72
#define CCW_CMD_SET_IND_ADAPTER 0x73
#define CCW_CMD_SET_VIRTIO_REV 0x83
--
2.9.3
- [Qemu-devel] [PULL 0/5] next round of s390x patches, Cornelia Huck, 2016/09/19
- [Qemu-devel] [PULL 1/5] s390x/kvm: disable cpu model for the 2.7 machine, Cornelia Huck, 2016/09/19
- [Qemu-devel] [PULL 2/5] MAINTAINERS: update s390 machine file patterns, Cornelia Huck, 2016/09/19
- [Qemu-devel] [PULL 5/5] QMP: fixup typos and whitespace damage, Cornelia Huck, 2016/09/19
- [Qemu-devel] [PULL 4/5] virtio-ccw: set revision 2 as maximal revision number, Cornelia Huck, 2016/09/19
- [Qemu-devel] [PULL 3/5] virtio-ccw: respond to READ_STATUS command,
Cornelia Huck <=
- Re: [Qemu-devel] [PULL 0/5] next round of s390x patches, Peter Maydell, 2016/09/19