[PATCH i-g-t 18/19] NORELOC - gem_exec_store - store_cachelines()

[Zbigniew Kempczyński]

From: Andrzej Turko <andrzej.turko at intel.com>

---
 tests/i915/gem_exec_store.c | 35 ++++++++++++++++++++++++++---------
 1 file changed, 26 insertions(+), 9 deletions(-)

diff --git a/tests/i915/gem_exec_store.c b/tests/i915/gem_exec_store.c
index 74666899f..129bb42be 100644
--- a/tests/i915/gem_exec_store.c
+++ b/tests/i915/gem_exec_store.c
@@ -127,7 +127,9 @@ static void store_cachelines(int fd, const struct intel_execution_engine2 *e,
 	struct drm_i915_gem_execbuffer2 execbuf;
 #define NCACHELINES (4096/64)
 	uint32_t *batch;
+	uint64_t ahnd, reloc_value;
 	int i;
+	bool do_relocs = !gem_uses_ppgtt(fd);
 
 	reloc = calloc(NCACHELINES, sizeof(*reloc));
 	igt_assert(reloc);
@@ -139,12 +141,23 @@ static void store_cachelines(int fd, const struct intel_execution_engine2 *e,
 	if (gen > 3 && gen < 6)
 		execbuf.flags |= I915_EXEC_SECURE;
 
+	ahnd = intel_allocator_open(fd, 0, INTEL_ALLOCATOR_SIMPLE);
 	obj = calloc(execbuf.buffer_count, sizeof(*obj));
 	igt_assert(obj);
-	for (i = 0; i < execbuf.buffer_count; i++)
+	for (i = 0; i < execbuf.buffer_count; i++) {
 		obj[i].handle = gem_create(fd, 4096);
-	obj[i-1].relocs_ptr = to_user_pointer(reloc);
-	obj[i-1].relocation_count = NCACHELINES;
+		obj[i].offset = intel_allocator_alloc(ahnd, obj[i].handle,
+						      4096, ALIGNMENT);
+		obj[i].offset = CANONICAL(obj[i].offset);
+		obj[i].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS |
+			       (do_relocs ? 0 : EXEC_OBJECT_PINNED);
+		if (i + 1 < execbuf.buffer_count && !do_relocs)
+			obj[i].flags |= EXEC_OBJECT_WRITE;
+	}
+	if (do_relocs) {
+		obj[i-1].relocs_ptr = to_user_pointer(reloc);
+		obj[i-1].relocation_count = NCACHELINES;
+	}
 	execbuf.buffers_ptr = to_user_pointer(obj);
 
 	batch = gem_mmap__cpu(fd, obj[i-1].handle, 0, 4096, PROT_WRITE);
@@ -152,23 +165,24 @@ static void store_cachelines(int fd, const struct intel_execution_engine2 *e,
 	i = 0;
 	for (unsigned n = 0; n < NCACHELINES; n++) {
 		reloc[n].target_handle = obj[n % (execbuf.buffer_count-1)].handle;
-		reloc[n].presumed_offset = -1;
+		reloc[n].presumed_offset = obj[n % (execbuf.buffer_count-1)].offset;
 		reloc[n].offset = (i + 1)*sizeof(uint32_t);
 		reloc[n].delta = 4 * (n * 16 + n % 16);
 		reloc[n].read_domains = I915_GEM_DOMAIN_INSTRUCTION;
 		reloc[n].write_domain = I915_GEM_DOMAIN_INSTRUCTION;
+		reloc_value = reloc[n].presumed_offset + reloc[n].delta;
 
 		batch[i] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
 		if (gen >= 8) {
-			batch[++i] = 0;
-			batch[++i] = 0;
+			batch[++i] = reloc_value;
+			batch[++i] = reloc_value >> 32;
 		} else if (gen >= 4) {
 			batch[++i] = 0;
-			batch[++i] = 0;
+			batch[++i] = reloc_value;
 			reloc[n].offset += sizeof(uint32_t);
 		} else {
 			batch[i]--;
-			batch[++i] = 0;
+			batch[++i] = reloc_value;
 		}
 		batch[++i] = n | ~n << 16;
 		i++;
@@ -188,11 +202,14 @@ static void store_cachelines(int fd, const struct intel_execution_engine2 *e,
 	}
 	free(reloc);
 
-	for (unsigned n = 0; n < execbuf.buffer_count; n++)
+	for (unsigned n = 0; n < execbuf.buffer_count; n++) {
 		gem_close(fd, obj[n].handle);
+		intel_allocator_free(ahnd, obj[n].handle);
+	}
 	free(obj);
 
 	igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
+	intel_allocator_close(ahnd);
 }
 
 static void store_all(int fd)
-- 
2.26.0