[PATCH i-g-t v4 8/8] tests/intel/gem_mmap: add basic multi-GPU subtest

[Kamil Konieczny]

Test basic mmap for two or more GPU cards.

Signed-off-by: Kamil Konieczny <kamil.konieczny at linux.intel.com>
Reviewed-by: Dominik Karol Piątkowski <dominik.karol.piatkowski at intel.com>
---
 tests/intel/gem_mmap.c | 77 +++++++++++++++++++++++++++---------------
 1 file changed, 50 insertions(+), 27 deletions(-)

diff --git a/tests/intel/gem_mmap.c b/tests/intel/gem_mmap.c
index d4ca1eda7..90bcec7b0 100644
--- a/tests/intel/gem_mmap.c
+++ b/tests/intel/gem_mmap.c
@@ -38,6 +38,8 @@
 
 #include "drm.h"
 #include "i915/gem_create.h"
+#include "intel_multigpu.h"
+
 /**
  * TEST: gem mmap
  * Description: Basic MMAP IOCTL tests for memory regions.
@@ -61,6 +63,11 @@
  *   mapping existence after gem_close and unmapping.
  * Run type: BAT
  *
+ * SUBTEST: basic-multigpu
+ * Description:
+ *   Test basics of mmap on two or more GPUs.
+ * Run type: BAT
+ *
  * SUBTEST: basic-small-bo
  * Description:
  *   Test the write read coherency and simultaneous access of different pages of a small buffer
@@ -209,12 +216,40 @@ static int mmap_ioctl(int i915, struct drm_i915_gem_mmap *arg)
 	return err;
 }
 
-igt_main
+static void test_basic(int i915, int pat)
 {
+	struct drm_i915_gem_mmap arg = {
+		.handle = gem_create(fd, OBJECT_SIZE),
+		.size = OBJECT_SIZE,
+	};
 	uint8_t expected[OBJECT_SIZE];
 	uint8_t buf[OBJECT_SIZE];
 	uint8_t *addr;
 
+	igt_assert_eq(mmap_ioctl(fd, &arg), 0);
+	addr = from_user_pointer(arg.addr_ptr);
+
+	igt_info("Testing contents of newly created object.\n");
+	memset(expected, 0, sizeof(expected));
+	igt_assert(memcmp(addr, expected, sizeof(expected)) == 0);
+
+	igt_info("Testing coherency of writes and mmap reads.\n");
+	memset(buf, 0, sizeof(buf));
+	memset(buf + 1024, pat, 1024);
+	memset(expected + 1024, pat, 1024);
+	gem_write(fd, arg.handle, 0, buf, OBJECT_SIZE);
+	igt_assert(memcmp(buf, addr, sizeof(buf)) == 0);
+
+	igt_info("Testing that mapping stays after close\n");
+	gem_close(fd, arg.handle);
+	igt_assert(memcmp(buf, addr, sizeof(buf)) == 0);
+
+	igt_info("Testing unmapping\n");
+	munmap(addr, OBJECT_SIZE);
+}
+
+igt_main
+{
 	igt_fixture {
 		fd = drm_open_driver(DRIVER_INTEL);
 		igt_require(gem_has_legacy_mmap(fd));
@@ -306,36 +341,13 @@ igt_main
 
 	igt_describe("Test basics of newly mapped gem object like default content, write and read "
 		     "coherency, mapping existence after gem_close and unmapping.");
-	igt_subtest("basic") {
-		struct drm_i915_gem_mmap arg = {
-			.handle = gem_create(fd, OBJECT_SIZE),
-			.size = OBJECT_SIZE,
-		};
-		igt_assert_eq(mmap_ioctl(fd, &arg), 0);
-		addr = from_user_pointer(arg.addr_ptr);
-
-		igt_info("Testing contents of newly created object.\n");
-		memset(expected, 0, sizeof(expected));
-		igt_assert(memcmp(addr, expected, sizeof(expected)) == 0);
-
-		igt_info("Testing coherency of writes and mmap reads.\n");
-		memset(buf, 0, sizeof(buf));
-		memset(buf + 1024, 0x01, 1024);
-		memset(expected + 1024, 0x01, 1024);
-		gem_write(fd, arg.handle, 0, buf, OBJECT_SIZE);
-		igt_assert(memcmp(buf, addr, sizeof(buf)) == 0);
-
-		igt_info("Testing that mapping stays after close\n");
-		gem_close(fd, arg.handle);
-		igt_assert(memcmp(buf, addr, sizeof(buf)) == 0);
-
-		igt_info("Testing unmapping\n");
-		munmap(addr, OBJECT_SIZE);
-	}
+	igt_subtest("basic")
+		test_basic(fd, 1);
 
 	igt_describe("Map small buffer object though direct CPU access, bypassing GPU.");
 	igt_subtest("short-mmap") {
 		uint32_t handle = gem_create(fd, OBJECT_SIZE);
+		uint8_t *addr;
 
 		igt_assert(OBJECT_SIZE > 4096);
 
@@ -373,4 +385,15 @@ igt_main
 
 	igt_fixture
 		drm_close_driver(fd);
+
+	igt_describe("Test basics of mapped on two or more GPUs.");
+	igt_subtest("basic-multigpu") {
+		igt_multi_fork_foreach_gpu(gpu, DRIVER_INTEL) {
+			int pat = 1 + rand() % 128;
+
+			igt_info("Basic mmap test with pattern x%x\n", pat);
+			test_basic(gpu, pat);
+		}
+		igt_waitchildren();
+	}
 }
-- 
2.42.0