[kvm-unit-tests PATCH v3 14/16] s390x: css: issuing SSCH when the channel is status pending

[Pierre Morel <pmorel@linux.ibm.com>]

We await CC=1 when we issue a SSCH on a channel with status pending.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 lib/s390x/css.h |  2 ++
 s390x/css.c     | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/lib/s390x/css.h b/lib/s390x/css.h
index 08b2974..3eb6957 100644
--- a/lib/s390x/css.h
+++ b/lib/s390x/css.h
@@ -90,6 +90,8 @@ struct scsw {
 #define SCSW_ESW_FORMAT		0x04000000
 #define SCSW_SUSPEND_CTRL	0x08000000
 #define SCSW_KEY		0xf0000000
+#define SCSW_SSCH_COMPLETED	(SCSW_CCW_FORMAT | SCSW_FC_START | SCSW_SC_PENDING | SCSW_SC_SECONDARY | \
+				 SCSW_SC_PRIMARY)
 	uint32_t ctrl;
 	uint32_t ccw_addr;
 #define SCSW_DEVS_DEV_END	0x04
diff --git a/s390x/css.c b/s390x/css.c
index f8c6688..52264f2 100644
--- a/s390x/css.c
+++ b/s390x/css.c
@@ -258,6 +258,15 @@ static void ssch_orb_fcx(void)
 	orb->ctrl = tmp;
 }
 
+static void ssch_status_pending(void)
+{
+	assert(ssch(test_device_sid, orb) == 0);
+	report(ssch(test_device_sid, orb) == 1, "CC = 1");
+	/* now we clear the status */
+	assert(tsch(test_device_sid, &irb) == 0);
+	check_io_completion(test_device_sid, SCSW_SSCH_COMPLETED);
+}
+
 static struct tests ssh_tests[] = {
 	{ "privilege", ssch_privilege },
 	{ "orb cpa zero", ssch_orb_cpa_zero },
@@ -269,6 +278,7 @@ static struct tests ssh_tests[] = {
 	{ "ORB reserved CTRL bits", ssch_orb_ctrl },
 	{ "ORB extensions", ssch_orb_extension},
 	{ "FC extensions", ssch_orb_fcx},
+	{ "status pending before ssch", ssch_status_pending},
 	{ NULL, NULL }
 };
 
-- 
2.17.1