[PATCH i-g-t v2 03/10] tests/xe_svm: basic svm test

[Bommu Krishnaiah]

Test will verify SVM basic functionality, by allocating a memory with
system allocator(malloc() or mmap()) and accessing in GPU.

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>
---
 include/drm-uapi/xe_drm.h |  2 ++
 tests/intel/xe_svm.c      | 57 +++++++++++++++++++++++++++++++++++++--
 2 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/include/drm-uapi/xe_drm.h b/include/drm-uapi/xe_drm.h
index 0b709b374..228bc2974 100644
--- a/include/drm-uapi/xe_drm.h
+++ b/include/drm-uapi/xe_drm.h
@@ -973,6 +973,8 @@ struct drm_xe_vm_bind_op {
 #define DRM_XE_VM_BIND_FLAG_IMMEDIATE	(1 << 1)
 #define DRM_XE_VM_BIND_FLAG_NULL	(1 << 2)
 #define DRM_XE_VM_BIND_FLAG_DUMPABLE	(1 << 3)
+#define DRM_XE_VM_BIND_FLAG_SYSTEM_ALLOCATOR	(1 << 4)
+
 	/** @flags: Bind flags */
 	__u32 flags;
 
diff --git a/tests/intel/xe_svm.c b/tests/intel/xe_svm.c
index 7d0892a3d..2daed1eff 100644
--- a/tests/intel/xe_svm.c
+++ b/tests/intel/xe_svm.c
@@ -14,8 +14,18 @@
  */
 
 /**
- * TEST: xe_basic
+ * TEST: xe_svm
+ * Description: Test shared virtual memory
+ * Sub-category: Memory management
+ * Functionality: svm
+ * Run type: FULL
+ *
+ * SUBTEST: xe_basic
  * Description: Basic test to verify store dword by using helper funtions
+ * SUBTEST: svm-basic-malloc
+ * Description: verify SVM basic functionality by using malloc
+ * SUBTEST: svm-basic-mmap
+ * Description: verify SVM basic functionality by using mmap
  */
 
 #include <fcntl.h>
@@ -67,6 +77,40 @@ static void xe_basic(int fd, uint32_t vm, struct drm_xe_engine_class_instance *e
 	xe_destroy_buffer(&dst_buf);
 }
 
+/**
+ *  Use malloc or mmap memory for direct GPU submission
+ */
+static void svm_basic(int fd, uint32_t vm, struct drm_xe_engine_class_instance *eci, bool test_mmap)
+{
+	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,
+	};
+
+	if (test_mmap)
+		dst = mmap(NULL, 4, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+	else
+		dst = aligned_alloc(xe_get_default_alignment(fd), 4);
+
+	xe_create_cmdbuf(&cmd_buf, insert_store, (uint64_t)dst, 0xc0ffee, eci);
+	xe_submit_cmd(&cmd_buf);
+	igt_assert_eq(*dst, 0xc0ffee);
+	xe_destroy_cmdbuf(&cmd_buf);
+
+	if (test_mmap)
+		munmap(dst, 4);
+	else
+		free(dst);
+}
+
 igt_main
 {
 	int fd;
@@ -77,13 +121,22 @@ igt_main
 		fd = drm_open_driver(DRIVER_XE);
 		igt_require(xe_supports_faults(fd));
 		vm = xe_vm_create(fd, DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE, 0);
+		__xe_vm_bind_assert(fd, vm, 0, 0, 0, 0, 0x1ull << 47, DRM_XE_VM_BIND_OP_MAP,
+				DRM_XE_VM_BIND_FLAG_SYSTEM_ALLOCATOR, 0, 0, 0, 0);
 	}
 
-
 	igt_subtest_f("xe-basic")
 		xe_for_each_engine(fd, hwe)
 			xe_basic(fd, vm, hwe);
 
+	igt_subtest_f("svm-basic-malloc")
+		xe_for_each_engine(fd, hwe)
+			svm_basic(fd, vm, hwe, false);
+
+	igt_subtest_f("svm-basic-mmap")
+		xe_for_each_engine(fd, hwe)
+			svm_basic(fd, vm, hwe, true);
+
 	igt_fixture {
 		xe_vm_destroy(fd, vm);
 		drm_close_driver(fd);
-- 
2.25.1