Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

[qemu.git] / hw / s390x / css.c

diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index a9cf3d7f973c5662067945542de88aa514b4b753..5df450e00bb5b5dacc7260a01f169c08ff316d2d 100644 (file)
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -588,6 +588,7 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
 {
     SCSW *s = &sch->curr_status.scsw;
     PMCW *p = &sch->curr_status.pmcw;
+    uint16_t oldflags;
     int ret;
     SCHIB schib;
 
@@ -610,6 +611,7 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
     copy_schib_from_guest(&schib, orig_schib);
     /* Only update the program-modifiable fields. */
     p->intparm = schib.pmcw.intparm;
+    oldflags = p->flags;
     p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA |
                   PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME |
                   PMCW_FLAGS_MASK_MP);
@@ -625,6 +627,12 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
             (PMCW_CHARS_MASK_MBFC | PMCW_CHARS_MASK_CSENSE);
     sch->curr_status.mba = schib.mba;
 
+    /* Has the channel been disabled? */
+    if (sch->disable_cb && (oldflags & PMCW_FLAGS_MASK_ENA) != 0
+        && (p->flags & PMCW_FLAGS_MASK_ENA) == 0) {
+        sch->disable_cb(sch);
+    }
+
     ret = 0;
 
 out:
@@ -1498,6 +1506,10 @@ void css_reset_sch(SubchDev *sch)
 {
     PMCW *p = &sch->curr_status.pmcw;
 
+    if ((p->flags & PMCW_FLAGS_MASK_ENA) != 0 && sch->disable_cb) {
+        sch->disable_cb(sch);
+    }
+
     p->intparm = 0;
     p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA |
                   PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME |