[kvm-unit-tests PATCH v2 5/5] s390x: css: testing measurement block format 1

Pierre Morel
2021-02-10T13:21:51Z

Measurement block format 1 is made available by the extended
mesurement block facility and is indicated in the SCHIB by
the bit in the PMCW.

The MBO is specified in the SCHIB of each channel and the MBO
defined by the SCHM instruction is ignored.

The test of the MB format 1 is just skipped if the feature is
not available.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
lib/s390x/css.h | 14 ++++++++++++++
s390x/css.c | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+)

diff --git a/lib/s390x/css.h b/lib/s390x/css.h
index 5478f45..ee525f1 100644
--- a/lib/s390x/css.h
+++ b/lib/s390x/css.h
@@ -389,4 +389,18 @@ struct measurement_block_format0 {
uint32_t initial_cmd_resp_time;
};

+struct measurement_block_format1 {
+ uint32_t ssch_rsch_count;
+ uint32_t sample_count;
+ uint32_t device_connect_time;
+ uint32_t function_pending_time;
+ uint32_t device_disconnect_time;
+ uint32_t cu_queuing_time;
+ uint32_t device_active_only_time;
+ uint32_t device_busy_time;
+ uint32_t initial_cmd_resp_time;
+ uint32_t irq_delay_time;
+ uint32_t irq_prio_delay_time;
+};
+
#endif
diff --git a/s390x/css.c b/s390x/css.c
index f3fdc0c..ec5e365 100644
--- a/s390x/css.c
+++ b/s390x/css.c
@@ -246,6 +246,41 @@ end:
report_prefix_pop();
}

+static void test_schm_fmt1(void)
+{
+ struct measurement_block_format1 *mb1;
+
+ report_prefix_push("Format 1");
+
+ mb1 = alloc_io_mem(sizeof(struct measurement_block_format1), 0);
+ if (!mb1) {
+ report_abort("measurement_block_format1 allocation failed");
+ goto end;
+ }
+
+ schm(NULL, 0); /* Clear previous MB address */
+ schm(0, SCHM_MBU);
+
+ /* Expect error for non aligned MB */
+ report_prefix_push("Unaligned MB origin");
+ report_xfail(start_measure((u64)mb1 + 1, 0, true), mb1->ssch_rsch_count != 0,
+ "SSCH measured %d", mb1->ssch_rsch_count);
+ report_prefix_pop();
+
+ memset(mb1, 0, sizeof(*mb1));
+
+ /* Expect success */
+ report_prefix_push("Valid MB address and index");
+ report(start_measure((u64)mb1, 0, true) &&
+ mb1->ssch_rsch_count == SCHM_UPDATE_CNT,
+ "SSCH measured %d", mb1->ssch_rsch_count);
+ report_prefix_pop();
+
+ free_io_mem(mb1, sizeof(struct measurement_block_format1));
+end:
+ report_prefix_pop();
+}
+
static struct {
const char *name;
void (*func)(void);
@@ -257,6 +292,7 @@ static struct {
{ "sense (ssch/tsch)", test_sense },
{ "measurement block (schm)", test_schm },
{ "measurement block format0", test_schm_fmt0 },
+ { "measurement block format1", test_schm_fmt1 },
{ NULL, NULL }
};

--
2.17.1