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s390x/css: Split out the IRB sense data 

Let's move this logic into its own routine,
so it can be reused later.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210617232537.1337506-3-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Eric Farman 2021-06-18 01:25:35 +02:00 committed by Cornelia Huck
parent 3fdc622ad7
commit 1b01dedaed
1 changed files with 12 additions and 7 deletions
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19
hw/s390x/css.c
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@ -1639,6 +1639,17 @@ static void copy_irb_to_guest(IRB *dest, const IRB *src, const PMCW *pmcw,
*irb_len = sizeof(*dest);
}
static void build_irb_sense_data(SubchDev *sch, IRB *irb)
{
int i;
/* Attention: sense_data is already BE! */
memcpy(irb->ecw, sch->sense_data, sizeof(sch->sense_data));
for (i = 0; i < ARRAY_SIZE(irb->ecw); i++) {
irb->ecw[i] = be32_to_cpu(irb->ecw[i]);
}
}
int css_do_tsch_get_irb(SubchDev *sch, IRB *target_irb, int *irb_len)
{
SCHIB *schib = &sch->curr_status;
@ -1669,14 +1680,8 @@ int css_do_tsch_get_irb(SubchDev *sch, IRB *target_irb, int *irb_len)
/* If a unit check is pending, copy sense data. */
if ((schib->scsw.dstat & SCSW_DSTAT_UNIT_CHECK) &&
(schib->pmcw.chars & PMCW_CHARS_MASK_CSENSE)) {
int i;
irb.scsw.flags |= SCSW_FLAGS_MASK_ESWF | SCSW_FLAGS_MASK_ECTL;
/* Attention: sense_data is already BE! */
memcpy(irb.ecw, sch->sense_data, sizeof(sch->sense_data));
for (i = 0; i < ARRAY_SIZE(irb.ecw); i++) {
irb.ecw[i] = be32_to_cpu(irb.ecw[i]);
}
build_irb_sense_data(sch, &irb);
irb.esw.erw = ESW_ERW_SENSE | (sizeof(sch->sense_data) << 8);
}
}