[RFC,i-g-t,2/2] tests/gem_userptr_blits: Refresh other now MMAP_GTT dependent subtests

Commit Message

Janusz Krzysztofik March 3, 2020, 12:15 p.m. UTC

Extend initial check for support of MMAP_GTT mapping to userptr with
equivalent checks for each MMAP_OFFSET mapping type supported by i915
driver.  Based on that, extend coverage of process-exit-gtt* subtests
over non-GTT mapping types.  In case of dmabuf-* subtests, use first
supported mapping type if there are any.

Signed-off-by: Janusz Krzysztofik <[e-mail]>
---
 tests/i915/gem_userptr_blits.c | 108 ++++++++++++++++++++++++---------
 1 file changed, 79 insertions(+), 29 deletions(-)

Patch

diff --git a/tests/i915/gem_userptr_blits.c b/tests/i915/gem_userptr_blits.c
index efe34c512..3c659db0c 100644
--- a/tests/i915/gem_userptr_blits.c
+++ b/tests/i915/gem_userptr_blits.c
@@ -73,18 +73,30 @@ 
 
 static uint32_t userptr_flags = LOCAL_I915_USERPTR_UNSYNCHRONIZED;
 
-static bool can_gtt_mmap;
+static bool *can_mmap;
 
 #define WIDTH 512
 #define HEIGHT 512
 
 static uint32_t linear[WIDTH*HEIGHT];
 
-static bool has_gtt_mmap(int i915)
+static bool has_mmap(int i915, const struct mmap_offset *t)
 {
 	void *ptr, *map = NULL;
 	uint32_t handle;
 
+	handle = gem_create(i915, PAGE_SIZE);
+	map = __gem_mmap_offset(i915, handle, 0, PAGE_SIZE, PROT_WRITE,
+				t->type);
+	gem_close(i915, handle);
+	if (map) {
+		munmap(map, PAGE_SIZE);
+	} else {
+		igt_debug("no HW / kernel support for mmap-offset(%s)\n",
+			  t->name);
+		return false;
+	}
+
 	igt_assert(posix_memalign(&ptr, PAGE_SIZE, PAGE_SIZE) == 0);
 
 	if (__gem_userptr(i915, ptr, 4096, 0,
@@ -92,9 +104,12 @@  static bool has_gtt_mmap(int i915)
 		goto out_ptr;
 	igt_assert(handle != 0);
 
-	map = __gem_mmap__gtt(i915, handle, 4096, PROT_WRITE);
+	map = __gem_mmap_offset(i915, handle, 0, 4096, PROT_WRITE, t->type);
 	if (map)
 		munmap(map, 4096);
+	else if (errno == ENODEV)
+		igt_debug("mmap-offset(%s) banned, lockdep loop prevention\n",
+			  t->name);
 
 	gem_close(i915, handle);
 out_ptr:
@@ -641,20 +656,25 @@  static int test_invalid_gtt_mapping(int fd)
 	return 0;
 }
 
-#define PE_GTT_MAP 0x1
-#define PE_BUSY 0x2
-static void test_process_exit(int fd, int flags)
+#define PE_BUSY 0x1
+static void test_process_exit(int fd, const struct mmap_offset *mmo, int flags)
 {
-	if (flags & PE_GTT_MAP)
-		igt_require(can_gtt_mmap);
+	if (mmo)
+		igt_require_f(can_mmap[mmo->type],
+			      "HW & kernel support for LLC and mmap-offset(%s) over userptr\n",
+			      mmo->name);
 
 	igt_fork(child, 1) {
 		uint32_t handle;
 
 		handle = create_userptr_bo(fd, sizeof(linear));
 
-		if (flags & PE_GTT_MAP) {
-			uint32_t *ptr = __gem_mmap__gtt(fd, handle, sizeof(linear), PROT_READ | PROT_WRITE);
+		if (mmo) {
+			uint32_t *ptr;
+
+			ptr = __gem_mmap_offset(fd, handle, 0, sizeof(linear),
+						PROT_READ | PROT_WRITE,
+						mmo->type);
 			if (ptr)
 				*ptr = 0;
 		}
@@ -878,13 +898,14 @@  static void (* volatile orig_sigbus)(int sig, siginfo_t *info, void *param);
 static volatile unsigned long sigbus_start;
 static volatile long sigbus_cnt = -1;
 
-static void *umap(int fd, uint32_t handle)
+static void *umap(int fd, uint32_t handle, const struct mmap_offset *mmo)
 {
 	void *ptr;
 
-	if (can_gtt_mmap) {
-		ptr = gem_mmap__gtt(fd, handle, sizeof(linear),
-				    PROT_READ | PROT_WRITE);
+	if (mmo) {
+		ptr = __gem_mmap_offset(fd, handle, 0, sizeof(linear),
+					PROT_READ | PROT_WRITE, mmo->type);
+		igt_assert(ptr);
 	} else {
 		uint32_t tmp = gem_create(fd, sizeof(linear));
 		igt_assert_eq(copy(fd, tmp, handle), 0);
@@ -896,16 +917,17 @@  static void *umap(int fd, uint32_t handle)
 }
 
 static void
-check_bo(int fd1, uint32_t handle1, int is_userptr, int fd2, uint32_t handle2)
+check_bo(int fd1, uint32_t handle1, int is_userptr, int fd2, uint32_t handle2,
+	 const struct mmap_offset *mmo)
 {
 	unsigned char *ptr1, *ptr2;
 	unsigned long size = sizeof(linear);
 
-	ptr2 = umap(fd2, handle2);
+	ptr2 = umap(fd2, handle2, mmo);
 	if (is_userptr)
 		ptr1 = is_userptr > 0 ? get_handle_ptr(handle1) : ptr2;
 	else
-		ptr1 = umap(fd1, handle1);
+		ptr1 = umap(fd1, handle1, mmo);
 
 	igt_assert(ptr1);
 	igt_assert(ptr2);
@@ -913,7 +935,7 @@  check_bo(int fd1, uint32_t handle1, int is_userptr, int fd2, uint32_t handle2)
 	sigbus_start = (unsigned long)ptr2;
 	igt_assert(memcmp(ptr1, ptr2, sizeof(linear)) == 0);
 
-	if (can_gtt_mmap) {
+	if (mmo) {
 		counter++;
 		memset(ptr1, counter, size);
 		memset(ptr2, counter, size);
@@ -971,9 +993,17 @@  static int test_dmabuf(void)
 	uint32_t handle, handle_import;
 	int dma_buf_fd = -1;
 	int ret;
+	const struct mmap_offset *mmo = NULL;
 
 	fd1 = drm_open_driver(DRIVER_INTEL);
 
+	for_each_mmap_offset_type(fd1, t)
+		if (can_mmap[t->type]) {
+			igt_debug("using mmap-offset(%s)\n", t->name);
+			mmo = t;
+			break;
+	}
+
 	handle = create_userptr_bo(fd1, sizeof(linear));
 	memset(get_handle_ptr(handle), counter, sizeof(linear));
 
@@ -990,17 +1020,17 @@  static int test_dmabuf(void)
 
 	fd2 = drm_open_driver(DRIVER_INTEL);
 	handle_import = prime_fd_to_handle(fd2, dma_buf_fd);
-	check_bo(fd1, handle, 1, fd2, handle_import);
+	check_bo(fd1, handle, 1, fd2, handle_import, mmo);
 
 	/* close dma_buf, check whether nothing disappears. */
 	close(dma_buf_fd);
-	check_bo(fd1, handle, 1, fd2, handle_import);
+	check_bo(fd1, handle, 1, fd2, handle_import, mmo);
 
 	/* destroy userptr object and expect SIGBUS */
 	free_userptr_bo(fd1, handle);
 	close(fd1);
 
-	if (can_gtt_mmap) {
+	if (mmo) {
 		struct sigaction sigact, orig_sigact;
 
 		memset(&sigact, 0, sizeof(sigact));
@@ -1012,7 +1042,7 @@  static int test_dmabuf(void)
 		orig_sigbus = orig_sigact.sa_sigaction;
 
 		sigbus_cnt = 0;
-		check_bo(fd2, handle_import, -1, fd2, handle_import);
+		check_bo(fd2, handle_import, -1, fd2, handle_import, mmo);
 		igt_assert(sigbus_cnt > 0);
 
 		ret = sigaction(SIGBUS, &orig_sigact, NULL);
@@ -1975,12 +2005,23 @@  igt_main_args("c:", NULL, help_str, opt_handler, NULL)
 	int size = sizeof(linear);
 
 	igt_fixture {
+		unsigned int mmo_max = 0;
+
 		fd = drm_open_driver(DRIVER_INTEL);
 		igt_assert(fd >= 0);
 		igt_require_gem(fd);
 		gem_require_blitter(fd);
 
-		can_gtt_mmap = has_gtt_mmap(fd) && gem_has_llc(fd);
+		for_each_mmap_offset_type(fd, t)
+			if (t->type >= mmo_max)
+				mmo_max = t->type + 1;
+		igt_assert(mmo_max);
+
+		can_mmap = calloc(mmo_max, sizeof(*can_mmap));
+		igt_assert(can_mmap);
+
+		for_each_mmap_offset_type(fd, t)
+			can_mmap[t->type] = has_mmap(fd, t) && gem_has_llc(fd);
 
 		size = sizeof(linear);
 
@@ -2135,16 +2176,22 @@  igt_main_args("c:", NULL, help_str, opt_handler, NULL)
 		}
 
 		igt_subtest("process-exit")
-			test_process_exit(fd, 0);
+			test_process_exit(fd, NULL, 0);
 
-		igt_subtest("process-exit-gtt")
-			test_process_exit(fd, PE_GTT_MAP);
+		igt_describe("Test process exit with userptr object mmapped via mmap-offset");
+		igt_subtest_with_dynamic("process-exit-mmap")
+			for_each_mmap_offset_type(fd, t)
+				igt_dynamic(t->name)
+					test_process_exit(fd, t, 0);
 
 		igt_subtest("process-exit-busy")
-			test_process_exit(fd, PE_BUSY);
+			test_process_exit(fd, NULL, PE_BUSY);
 
-		igt_subtest("process-exit-gtt-busy")
-			test_process_exit(fd, PE_GTT_MAP | PE_BUSY);
+		igt_describe("Test process exit with busy userptr object mmapped via mmap-offset");
+		igt_subtest_with_dynamic("process-exit-mmap-busy")
+			for_each_mmap_offset_type(fd, t)
+				igt_dynamic(t->name)
+					test_process_exit(fd, t, PE_BUSY);
 
 		igt_subtest("create-destroy-sync")
 			test_create_destroy(fd, 5);
@@ -2244,4 +2291,7 @@  igt_main_args("c:", NULL, help_str, opt_handler, NULL)
 
 	igt_subtest("access-control")
 		test_access_control(fd);
+
+	igt_fixture
+		free(can_mmap);
 }