[PATCH i-g-t v2 07/10] tests/intel/xe_svm: svm-invalid-va

[Bommu Krishnaiah]

Verify SVM functionality while accessing invalid address

Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu at intel.com>
Cc: Oak Zeng <oak.zeng at intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
---
 tests/intel/xe_svm.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tests/intel/xe_svm.c b/tests/intel/xe_svm.c
index 421d7fd1a..b846ca71a 100644
--- a/tests/intel/xe_svm.c
+++ b/tests/intel/xe_svm.c
@@ -32,6 +32,8 @@
  * Description: verify SVM basic functionality by using huge page access
  * SUBTEST: svm-atomic-access
  * Description: verify SVM basic functionality by using GPU atomic access any location in malloc'ed memory
+ * SUBTEST: svm_invalid_va
+ * Description: verify SVM functionality while accessing invalid address
  */
 
 #include <fcntl.h>
@@ -224,6 +226,34 @@ static void svm_atomic_access(int fd, uint32_t vm, struct drm_xe_engine_class_in
 	free(dst);
 }
 
+/**
+ * Submit a GPU command to access an invalid address.
+ * Driver should detect a catstrophic error.
+ */
+static void svm_invalid_va(int fd, uint32_t vm, struct drm_xe_engine_class_instance *eci)
+{
+	uint64_t gpu_va = 0x1a0000;
+	size_t bo_size = xe_bb_size(fd, PAGE_ALIGN_UFENCE);
+	uint32_t *dst;
+
+	struct xe_buffer cmd_buf = {
+		.fd = fd,
+		.gpu_addr = (void *)(uintptr_t)gpu_va,
+		.vm = vm,
+		.size = bo_size,
+		.placement = vram_if_possible(fd, eci->gt_id),
+		.flag = DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM
+	};
+
+	dst = (uint32_t *)0x1fffffffffff000;
+
+	xe_create_cmdbuf(&cmd_buf, insert_store, (uint64_t)dst, 0xc0ffee, eci);
+	igt_assert_eq(__xe_submit_cmd(&cmd_buf), -EIO); // for invalid address __xe_wait_ufence will return -EIO
+
+	xe_destroy_cmdbuf(&cmd_buf);
+	free(dst);
+}
+
 igt_main
 {
 	int fd;
@@ -262,6 +292,10 @@ igt_main
 		xe_for_each_engine(fd, hwe)
 			svm_atomic_access(fd, vm, hwe);
 
+	igt_subtest_f("svm-invalid-va")
+		xe_for_each_engine(fd, hwe)
+			svm_invalid_va(fd, vm, hwe);
+
 	igt_fixture {
 		xe_vm_destroy(fd, vm);
 		drm_close_driver(fd);
-- 
2.25.1