[igt-dev] [PATCH i-g-t v3 8/8] i915_pm_rpm: Extend gem-mmap-type test with D3Cold

[Anshuman Gupta]

Added d3cold dynamic subtest to gem-mmap-type with device class
memory region. It test both D3Cold-{VRAM_SR, Off} by using
d3cold_sr_lmem_threshold i915_params debugfs.

v2:
- Two different subtest d3cold-off and d3cold-vrsr. [Rodrigo]
v3:
- Skip the d3cold-vram-sr test when lmem_threshold is not available.

Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 tests/i915/i915_pm_rpm.c | 41 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/tests/i915/i915_pm_rpm.c b/tests/i915/i915_pm_rpm.c
index a062fde88..3a4e2901b 100644
--- a/tests/i915/i915_pm_rpm.c
+++ b/tests/i915/i915_pm_rpm.c
@@ -1129,11 +1129,12 @@ static struct pci_device *setup_d3cold_and_get_root_port(void)
 }
 
 static void gem_mmap_args(const struct mmap_offset *t,
-			  struct drm_i915_gem_memory_class_instance *mem_regions)
+			  struct drm_i915_gem_memory_class_instance *mem_regions, bool d3cold)
 {
 	int i;
 	uint32_t handle;
 	int buf_size = 8192;
+	struct pci_device *root;
 	uint8_t *gem_buf;
 
 	/* Create, map and set data while the device is active. */
@@ -1151,17 +1152,29 @@ static void gem_mmap_args(const struct mmap_offset *t,
 	for (i = 0; i < buf_size; i++)
 		igt_assert(gem_buf[i] == (i & 0xFF));
 
+	if (d3cold)
+		root = setup_d3cold_and_get_root_port();
+
 	/* Now suspend, read and modify. */
 	disable_all_screens_and_wait(&ms_data);
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	for (i = 0; i < buf_size; i++)
 		igt_assert(gem_buf[i] == (i & 0xFF));
 	igt_assert(wait_for_suspended());
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	for (i = 0; i < buf_size; i++)
 		gem_buf[i] = (~i & 0xFF);
 	igt_assert(wait_for_suspended());
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	/* Now resume and see if it's still there. */
 	enable_one_screen_and_wait(&ms_data);
 	for (i = 0; i < buf_size; i++)
@@ -1173,12 +1186,18 @@ static void gem_mmap_args(const struct mmap_offset *t,
 	 * suspended. */
 	disable_all_screens_and_wait(&ms_data);
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	gem_buf = __gem_mmap_offset(drm_fd, handle, 0, buf_size,
 				    PROT_READ | PROT_WRITE, t->type);
 	igt_require(gem_buf);
 
 	igt_assert(wait_for_suspended());
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	for (i = 0; i < buf_size; i++)
 		gem_buf[i] = i & 0xFF;
 
@@ -1187,6 +1206,9 @@ static void gem_mmap_args(const struct mmap_offset *t,
 
 	igt_assert(wait_for_suspended());
 
+	if (d3cold)
+		igt_assert(wait_for_d3cold(root));
+
 	/* Resume and check if it's still there. */
 	enable_one_screen_and_wait(&ms_data);
 	for (i = 0; i < buf_size; i++)
@@ -2186,7 +2208,22 @@ igt_main_args("", long_options, help_str, opt_handler, NULL)
 		for_each_mmap_offset_type(drm_fd, t) {
 			for_each_memory_region(r, drm_fd) {
 				igt_dynamic_f("%s-%s", t->name, r->name)
-				gem_mmap_args(t, &r->ci);
+				gem_mmap_args(t, &r->ci, false);
+
+				if (r->ci.memory_class == I915_MEMORY_CLASS_SYSTEM)
+					continue;
+
+				igt_dynamic_f("%s-%s-%s", t->name, "d3cold-off", r->name) {
+					if (lmem_threshold >= 0)
+						set_d3cold_sr_lmem_threshold(debugfs, 300);
+					gem_mmap_args(t, &r->ci, true);
+				}
+
+				igt_dynamic_f("%s-%s-%s", t->name, "d3cold-vrsr", r->name) {
+					igt_require(lmem_threshold >= 0);
+					set_d3cold_sr_lmem_threshold(debugfs, 0);
+					gem_mmap_args(t, &r->ci, true);
+				}
 			}
 		}
 	}
-- 
2.26.2