[kvm-unit-tests PATCH v3 10/16] s390x: css: ssch checking addressing errors

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

We check ORB CPA and CCW address for being inside limits
and existing.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 s390x/css.c         | 79 +++++++++++++++++++++++++++++++++++++++++++++
 s390x/unittests.cfg |  8 +++--
 2 files changed, 85 insertions(+), 2 deletions(-)

diff --git a/s390x/css.c b/s390x/css.c
index 47452ba..f8f91cf 100644
--- a/s390x/css.c
+++ b/s390x/css.c
@@ -16,6 +16,7 @@
 #include <asm/arch_def.h>
 #include <alloc_page.h>
 #include <alloc.h>
+#include <sclp.h>
 
 #include <malloc_io.h>
 #include <css.h>
@@ -34,6 +35,12 @@ static struct senseid *senseid;
 struct ccw1 *ccw;
 struct orb *orb;
 
+phys_addr_t ram_size;
+#define ADDR_1G		0x40000000
+#define ADDR_1_5G	0x60000000
+#define ADDR_3G		0xc0000000
+
+
 static void test_enumerate(void)
 {
 	test_device_sid = css_enumerate();
@@ -123,10 +130,80 @@ static void ssch_orb_alignment(void)
 	free_pages(p - 2);
 }
 
+static void ssch_data_access(void)
+{
+	uint32_t tmp;
+
+	if (ram_size > ADDR_1G) {
+		report_skip("Test with more than 1G available memory");
+		return;
+	}
+
+	tmp = ccw->data_address;
+	ccw->data_address = ADDR_1_5G;
+
+	ssch(test_device_sid, orb);
+	tsch(test_device_sid, &irb);
+	report(check_io_errors(test_device_sid, 0, SCSW_SCHS_PRG_CHK), "expecting Program check");
+
+	ccw->data_address = tmp;
+}
+
+static void ssch_ccw_access(void)
+{
+	uint32_t tmp;
+
+	if (ram_size > ADDR_1G) {
+		report_skip("Test with more than 1G available memory");
+		return;
+	}
+
+	tmp = orb->cpa;
+	orb->cpa = ADDR_1_5G;
+
+	ssch(test_device_sid, orb);
+	tsch(test_device_sid, &irb);
+	report(check_io_errors(test_device_sid, 0, SCSW_SCHS_PRG_CHK), "expecting Program check");
+
+	orb->cpa = tmp;
+}
+
+static void ssch_ccw_dma31(void)
+{
+	uint32_t tmp;
+	struct ccw1 *ccw_high;
+
+	if (ram_size < ADDR_3G) {
+		report_skip("Test with less than 3G available memory");
+		return;
+	}
+
+	ccw_high = alloc_pages_flags(0, AREA_NORMAL);
+	assert(ccw_high);
+	ccw_high->code = CCW_CMD_SENSE_ID;
+	ccw_high->flags = CCW_F_SLI;
+	ccw_high->count = sizeof(*senseid);
+	ccw_high->data_address = (long)senseid;
+
+	tmp = orb->cpa;
+	report_info("ccw_high: %p", ccw_high);
+	orb->cpa = (long)ccw_high;
+
+	expect_pgm_int();
+	ssch(test_device_sid, orb);
+	check_pgm_int_code(PGM_INT_CODE_OPERAND);
+
+	orb->cpa = tmp;
+	free_pages(ccw_high);
+}
+
 static struct tests ssh_tests[] = {
 	{ "privilege", ssch_privilege },
 	{ "orb cpa zero", ssch_orb_cpa_zero },
 	{ "orb alignment", ssch_orb_alignment },
+	{ "data access", ssch_data_access },
+	{ "CCW access", ssch_ccw_access },
+	{ "CCW in DMA31", ssch_ccw_dma31 },
 	{ NULL, NULL }
 };
 
@@ -136,6 +213,7 @@ static void test_ssch(void)
 
 	orb_alloc();
 	assert(css_enable(test_device_sid, 0) == 0);
+	ram_size = get_ram_size();
 
 	for (i = 0; ssh_tests[i].name; i++) {
 		report_prefix_push(ssh_tests[i].name);
@@ -144,6 +222,7 @@ static void test_ssch(void)
 	}
 
 	orb_free();
+	css_enable(test_device_sid, 0);
 }
 
 /*
diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
index 9f81a60..45569dc 100644
--- a/s390x/unittests.cfg
+++ b/s390x/unittests.cfg
@@ -86,9 +86,13 @@ extra_params = -m 1G
 file = sclp.elf
 extra_params = -m 3G
 
-[css]
+[css-1g]
 file = css.elf
-extra_params = -device virtio-net-ccw
+extra_params = -m 1G -device virtio-net-ccw
+
+[css-3g]
+file = css.elf
+extra_params = -m 3G -device virtio-net-ccw
 
 [skrf]
 file = skrf.elf
-- 
2.17.1