[PATCH 1/3] tests/intel/xe_exec_system_allocator: Test to validate basic SVM functionality

[sai.gowtham.ch at intel.com]

From: Sai Gowtham Ch <sai.gowtham.ch at intel.com>

Basic test validates basic SVM functionality.

Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Signed-off-by: Sai Gowtham Ch <sai.gowtham.ch at intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
---
 tests/intel/xe_exec_system_allocator.c | 63 ++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/tests/intel/xe_exec_system_allocator.c b/tests/intel/xe_exec_system_allocator.c
index 06daac8c2..68bf29898 100644
--- a/tests/intel/xe_exec_system_allocator.c
+++ b/tests/intel/xe_exec_system_allocator.c
@@ -32,6 +32,8 @@
 struct batch_data {
 	uint32_t batch[16];
 	uint64_t pad;
+	uint64_t vm_sync;
+	uint64_t exec_sync;
 	uint32_t data;
 	uint32_t expected_data;
 };
@@ -405,6 +407,63 @@ static void __aligned_partial_free(struct aligned_alloc_type  *aligned_alloc_typ
 		       aligned_alloc_type->__size - aligned_alloc_type->size - begin_size);
 }
 
+/**
+ * SUBTEST: basic-svm
+ * Description: Test validates basic svm.
+ * Test category: functionality test
+ */
+static void test_basic(int fd, struct drm_xe_engine_class_instance *eci,
+		       size_t bo_size, int num_dwords)
+{
+	uint64_t addr;
+	struct drm_xe_sync sync[1] = {
+		{ .type = DRM_XE_SYNC_TYPE_USER_FENCE, .flags = DRM_XE_SYNC_FLAG_SIGNAL,
+		  .timeline_value = USER_FENCE_VALUE },
+	};
+	struct drm_xe_exec exec = {
+		.num_batch_buffer = 1,
+		.num_syncs = 1,
+		.syncs = to_user_pointer(sync),
+	};
+	struct batch_data *data;
+	uint32_t exec_queues, vm;
+	size_t aligned_size = bo_size ?: xe_get_default_alignment(fd);
+
+	vm = xe_vm_create(fd, DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE, 0);
+	data = aligned_alloc(aligned_size, bo_size);
+	igt_assert(data != NULL);
+	memset(data, 0, bo_size);
+
+	exec_queues = xe_exec_queue_create(fd, vm, eci, 0);
+	sync[0].addr = to_user_pointer(&data[0].vm_sync);
+	bind_system_allocator(sync, 1);
+	xe_wait_ufence(fd, &data[0].vm_sync, USER_FENCE_VALUE, 0, NSEC_PER_SEC);
+	data[0].vm_sync = 0;
+
+	addr = to_user_pointer(data);
+	for (int i = 0; i <= num_dwords; i++) {
+		uint64_t batch_offset = (char *)&data[i].batch - (char *)data;
+		uint64_t batch_addr = addr + batch_offset;
+		uint64_t sdi_offset = (char *)&(data[i].data) - (char *)data;
+		uint64_t sdi_addr = addr + sdi_offset;
+		int b = 0;
+
+		write_dword(data[i].batch, sdi_addr, WRITE_VALUE(&data[i], i), &b);
+		igt_assert(b <= ARRAY_SIZE(data[i].batch));
+
+		exec.exec_queue_id = exec_queues;
+		exec.address = batch_addr;
+		sync[0].addr = addr + (char *)&data[i].exec_sync - (char *)data;
+		xe_exec(fd, &exec);
+		xe_wait_ufence(fd, &data[i].exec_sync, USER_FENCE_VALUE, exec_queues, NSEC_PER_SEC);
+		data[i].exec_sync = 0;
+		igt_assert_eq(data[i].data, READ_VALUE(&data[i]));
+	}
+	unbind_system_allocator();
+	free(data);
+	xe_exec_queue_destroy(fd, exec_queues);
+	xe_vm_destroy(fd, vm);
+}
 /**
  * SUBTEST: unaligned-alloc
  * Description: allocate unaligned sizes of memory
@@ -1700,6 +1759,10 @@ igt_main
 		open_sync_file();
 	}
 
+	igt_subtest("basic-svm")
+		xe_for_each_engine(fd, hwe)
+			test_basic(fd, hwe, SZ_64K, 1);
+
 	for (const struct section *s = sections; s->name; s++) {
 		igt_subtest_f("once-%s", s->name)
 			xe_for_each_engine(fd, hwe)
-- 
2.34.1