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[Qemu-devel] [PATCH v7 12/13] vfio/ccw: update sense data if a unit chec
From: |
Dong Jia Shi |
Subject: |
[Qemu-devel] [PATCH v7 12/13] vfio/ccw: update sense data if a unit check is pending |
Date: |
Fri, 5 May 2017 04:03:51 +0200 |
Concurrent-sense data is currently not delivered. This patch stores
the concurrent-sense data to the subchannel if a unit check is pending
and the concurrent-sense bit is enabled. Then a TSCH can retreive the
right IRB data back to the guest.
Signed-off-by: Dong Jia Shi <address@hidden>
---
hw/vfio/ccw.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index 3c8b518..73f326f 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -94,6 +94,7 @@ static void vfio_ccw_io_notifier_handler(void *opaque)
CcwDevice *ccw_dev = CCW_DEVICE(cdev);
SubchDev *sch = ccw_dev->sch;
SCSW *s = &sch->curr_status.scsw;
+ PMCW *p = &sch->curr_status.pmcw;
IRB irb;
int size;
@@ -143,6 +144,12 @@ static void vfio_ccw_io_notifier_handler(void *opaque)
/* Update control block via irb. */
copy_scsw_to_guest(s, &irb.scsw);
+ /* If a uint check is pending, copy sense data. */
+ if ((s->dstat & SCSW_DSTAT_UNIT_CHECK) &&
+ (p->chars & PMCW_CHARS_MASK_CSENSE)) {
+ memcpy(sch->sense_data, irb.ecw, sizeof(irb.ecw));
+ }
+
read_err:
css_inject_io_interrupt(sch);
}
--
2.10.2
- [Qemu-devel] [PATCH v7 10/13] s390x/css: introduce and realize ccw-request callback, (continued)
Re: [Qemu-devel] [PATCH v7 13/13] MAINTAINERS: Add vfio-ccw maintainer, Alex Williamson, 2017/05/11
[Qemu-devel] [PATCH v7 12/13] vfio/ccw: update sense data if a unit check is pending,
Dong Jia Shi <=
Re: [Qemu-devel] [PATCH v7 00/13] basic channel IO passthrough infrastructure based on vfio, Cornelia Huck, 2017/05/05