diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/s390x/css.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 65e6b712a1..f6d0c0a80e 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -801,7 +801,8 @@ out: return ret; } -static void copy_irb_to_guest(IRB *dest, const IRB *src, PMCW *pmcw) +static void copy_irb_to_guest(IRB *dest, const IRB *src, PMCW *pmcw, + int *irb_len) { int i; uint16_t stctl = src->scsw.ctrl & SCSW_CTRL_MASK_STCTL; @@ -815,6 +816,8 @@ static void copy_irb_to_guest(IRB *dest, const IRB *src, PMCW *pmcw) for (i = 0; i < ARRAY_SIZE(dest->ecw); i++) { dest->ecw[i] = cpu_to_be32(src->ecw[i]); } + *irb_len = sizeof(*dest) - sizeof(dest->emw); + /* extended measurements enabled? */ if ((src->scsw.flags & SCSW_FLAGS_MASK_ESWF) || !(pmcw->flags & PMCW_FLAGS_MASK_TF) || @@ -832,26 +835,21 @@ static void copy_irb_to_guest(IRB *dest, const IRB *src, PMCW *pmcw) dest->emw[i] = cpu_to_be32(src->emw[i]); } } + *irb_len = sizeof(*dest); } -int css_do_tsch(SubchDev *sch, IRB *target_irb) +int css_do_tsch_get_irb(SubchDev *sch, IRB *target_irb, int *irb_len) { SCSW *s = &sch->curr_status.scsw; PMCW *p = &sch->curr_status.pmcw; uint16_t stctl; - uint16_t fctl; - uint16_t actl; IRB irb; - int ret; if (!(p->flags & (PMCW_FLAGS_MASK_DNV | PMCW_FLAGS_MASK_ENA))) { - ret = 3; - goto out; + return 3; } stctl = s->ctrl & SCSW_CTRL_MASK_STCTL; - fctl = s->ctrl & SCSW_CTRL_MASK_FCTL; - actl = s->ctrl & SCSW_CTRL_MASK_ACTL; /* Prepare the irb for the guest. */ memset(&irb, 0, sizeof(IRB)); @@ -876,7 +874,22 @@ int css_do_tsch(SubchDev *sch, IRB *target_irb) } } /* Store the irb to the guest. */ - copy_irb_to_guest(target_irb, &irb, p); + copy_irb_to_guest(target_irb, &irb, p, irb_len); + + return ((stctl & SCSW_STCTL_STATUS_PEND) == 0); +} + +void css_do_tsch_update_subch(SubchDev *sch) +{ + SCSW *s = &sch->curr_status.scsw; + PMCW *p = &sch->curr_status.pmcw; + uint16_t stctl; + uint16_t fctl; + uint16_t actl; + + stctl = s->ctrl & SCSW_CTRL_MASK_STCTL; + fctl = s->ctrl & SCSW_CTRL_MASK_FCTL; + actl = s->ctrl & SCSW_CTRL_MASK_ACTL; /* Clear conditions on subchannel, if applicable. */ if (stctl & SCSW_STCTL_STATUS_PEND) { @@ -913,11 +926,6 @@ int css_do_tsch(SubchDev *sch, IRB *target_irb) memset(sch->sense_data, 0 , sizeof(sch->sense_data)); } } - - ret = ((stctl & SCSW_STCTL_STATUS_PEND) == 0); - -out: - return ret; } static void copy_crw_to_guest(CRW *dest, const CRW *src) |