From a987dfced200adf1e4c2d3c39f0b5da0fb7e6ead Mon Sep 17 00:00:00 2001
From: Eric Farman <farman@linux.ibm.com>
Date: Thu, 24 Jun 2021 14:15:14 -0400
Subject: [PATCH 02/43] s390x/css: Split out the IRB sense data

RH-Author: Miroslav Rezanina <mrezanin@redhat.com>
RH-Bugzilla: 1957194

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>
(cherry picked from commit 1b01dedaed41c2ca6129475c22b7b778b109fae8)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/s390x/css.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index bd3172a688..fac7d5b39d 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -1640,6 +1640,17 @@ 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;
@@ -1670,14 +1681,8 @@ 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);
         }
     }
-- 
2.27.0