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authorHalil Pasic <pasic@linux.vnet.ibm.com>2017-09-21 20:08:38 +0200
committerCornelia Huck <cohuck@redhat.com>2017-10-06 10:53:01 +0200
commit0a22eac5aaf90b2c2c1a4c29eecc25ef508d520b (patch)
tree72230ff6f6160cde405dcb44f568746639bbc97c /hw
parent57065a70d00c36f5d20d430eb64d16db8e761c31 (diff)
s390x/css: use ccw data stream
Replace direct access which implicitly assumes no IDA or MIDA with the new ccw data stream interface which should cope with these transparently in the future. Note that checking the return code for ccw_dstream_* will be done in a follow-on patch. Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Message-Id: <20170921180841.24490-3-pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/s390x/css.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 248e9d47e5..390c78f7d0 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -894,6 +894,7 @@ static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr,
}
/* Look at the command. */
+ ccw_dstream_init(&sch->cds, &ccw, &(sch->orb));
switch (ccw.cmd_code) {
case CCW_CMD_NOOP:
/* Nothing to do. */
@@ -907,8 +908,8 @@ static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr,
}
}
len = MIN(ccw.count, sizeof(sch->sense_data));
- cpu_physical_memory_write(ccw.cda, sch->sense_data, len);
- sch->curr_status.scsw.count = ccw.count - len;
+ ccw_dstream_write_buf(&sch->cds, sch->sense_data, len);
+ sch->curr_status.scsw.count = ccw_dstream_residual_count(&sch->cds);
memset(sch->sense_data, 0, sizeof(sch->sense_data));
ret = 0;
break;
@@ -934,8 +935,8 @@ static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr,
} else {
sense_id.reserved = 0;
}
- cpu_physical_memory_write(ccw.cda, &sense_id, len);
- sch->curr_status.scsw.count = ccw.count - len;
+ ccw_dstream_write_buf(&sch->cds, &sense_id, len);
+ sch->curr_status.scsw.count = ccw_dstream_residual_count(&sch->cds);
ret = 0;
break;
}