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[Qemu-devel] [PULL 01/23] s390x/css: handle ccw-0 TIC correctly
From: |
Cornelia Huck |
Subject: |
[Qemu-devel] [PULL 01/23] s390x/css: handle ccw-0 TIC correctly |
Date: |
Mon, 7 Sep 2015 16:48:15 +0200 |
From: Pierre Morel <address@hidden>
In CCW-0 format TIC command 4 highest bits are ignored in the subchannel.
In CCW-1 format the TIC command 4 highest bits must be 0.
To convert TIC from CCW-0 to CCW-1 we clear the 4 highest bits
to guarantee compatibility.
Signed-off-by: Pierre Morel <address@hidden>
Reviewed-by: Cornelia Huck <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
---
hw/s390x/css.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 5df450e..2c0782c 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -261,6 +261,9 @@ static CCW1 copy_ccw_from_guest(hwaddr addr, bool fmt1)
ret.flags = tmp0.flags;
ret.count = be16_to_cpu(tmp0.count);
ret.cda = be16_to_cpu(tmp0.cda1) | (tmp0.cda0 << 16);
+ if ((ret.cmd_code & 0x0f) == CCW_CMD_TIC) {
+ ret.cmd_code &= 0x0f;
+ }
}
return ret;
}
--
2.5.1
- [Qemu-devel] [PULL 00/23] s390x: further patches, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 01/23] s390x/css: handle ccw-0 TIC correctly,
Cornelia Huck <=
- [Qemu-devel] [PULL 10/23] sclp/s390: rework sclp cpu hotplug device notification, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 02/23] s390x/css: ccw-0 enforces count > 0, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 03/23] s390x/event-facility: fix receive mask check, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 05/23] s390x/event-facility: fix location of receive mask, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 06/23] pc-bios/s390-ccw: Device detection in higher subchannel sets, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 07/23] pc-bios/s390-ccw: rebuild image, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 11/23] s390/sclp: rework sclp event facility initialization + device realization, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 12/23] s390/sclp: replace sclp event types with proper defines, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 04/23] s390x/css: start with cleared cstat/dstat, Cornelia Huck, 2015/09/07
- [Qemu-devel] [PULL 18/23] s390: disallow memory hotplug for the s390-virtio machine, Cornelia Huck, 2015/09/07