[kvm-unit-tests PULL 04/17] s390x: STSI tests

Thomas Huth
2019-09-25T16:37:43Z

For now let's concentrate on the error conditions.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20190826163502.1298-5-frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[thuth: Replaced a "%3" in inline assembly with "%[addr]"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
s390x/Makefile | 1 +
s390x/stsi.c | 84 +++++++++++++++++++++++++++++++++++++++++++++
s390x/unittests.cfg | 3 ++
3 files changed, 88 insertions(+)
create mode 100644 s390x/stsi.c

diff --git a/s390x/Makefile b/s390x/Makefile
index 3453373..76db0bb 100644
--- a/s390x/Makefile
+++ b/s390x/Makefile
@@ -13,6 +13,7 @@ tests += $(TEST_DIR)/gs.elf
tests += $(TEST_DIR)/iep.elf
tests += $(TEST_DIR)/cpumodel.elf
tests += $(TEST_DIR)/diag288.elf
+tests += $(TEST_DIR)/stsi.elf
tests_binary = $(patsubst %.elf,%.bin,$(tests))

all: directories test_cases test_cases_binary
diff --git a/s390x/stsi.c b/s390x/stsi.c
new file mode 100644
index 0000000..7232cb0
--- /dev/null
+++ b/s390x/stsi.c
@@ -0,0 +1,84 @@
+/*
+ * Store System Information tests
+ *
+ * Copyright (c) 2019 IBM Corp
+ *
+ * Authors:
+ * Janosch Frank <frankja@linux.ibm.com>
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License version 2.
+ */
+
+#include <libcflat.h>
+#include <asm/page.h>
+#include <asm/asm-offsets.h>
+#include <asm/interrupt.h>
+
+static uint8_t pagebuf[PAGE_SIZE * 2] __attribute__((aligned(PAGE_SIZE * 2)));
+
+static void test_specs(void)
+{
+ report_prefix_push("specification");
+
+ report_prefix_push("inv r0");
+ expect_pgm_int();
+ stsi(pagebuf, 0, 1 << 8, 0);
+ check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
+ report_prefix_pop();
+
+ report_prefix_push("inv r1");
+ expect_pgm_int();
+ stsi(pagebuf, 1, 0, 1 << 16);
+ check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
+ report_prefix_pop();
+
+ report_prefix_push("unaligned");
+ expect_pgm_int();
+ stsi(pagebuf + 42, 1, 0, 0);
+ check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
+ report_prefix_pop();
+
+ report_prefix_pop();
+}
+
+static void test_priv(void)
+{
+ report_prefix_push("privileged");
+ expect_pgm_int();
+ enter_pstate();
+ stsi(pagebuf, 0, 0, 0);
+ check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION);
+ report_prefix_pop();
+}
+
+static inline unsigned long stsi_get_fc(void *addr)
+{
+ register unsigned long r0 asm("0") = 0;
+ register unsigned long r1 asm("1") = 0;
+ int cc;
+
+ asm volatile("stsi 0(%[addr])\n"
+ "ipm %[cc]\n"
+ "srl %[cc],28\n"
+ : "+d" (r0), [cc] "=d" (cc)
+ : "d" (r1), [addr] "a" (addr)
+ : "cc", "memory");
+ assert(!cc);
+ return r0 >> 28;
+}
+
+static void test_fc(void)
+{
+ report("invalid fc", stsi(pagebuf, 7, 0, 0) == 3);
+ report("query fc >= 2", stsi_get_fc(pagebuf) >= 2);
+}
+
+int main(void)
+{
+ report_prefix_push("stsi");
+ test_priv();
+ test_specs();
+ test_fc();
+ return report_summary();
+}
diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
index 9dd288a..cc79a4e 100644
--- a/s390x/unittests.cfg
+++ b/s390x/unittests.cfg
@@ -68,3 +68,6 @@ file = cpumodel.elf
[diag288]
file = diag288.elf
extra_params=-device diag288,id=watchdog0 --watchdog-action inject-nmi
+
+[stsi]
+file = stsi.elf
--
2.18.1