drm/selftest: Refactor drm mode setting selftests

Selftest for drm damage helper iterator functions.

Cc Daniel Vetter <[email protected]>

Cc [email protected]

Signed-off-by Deepak Rawat <[email protected]>

Reviewed-by Daniel Vetter <[email protected]>

Reviewed-by Thomas Hellstrom <[email protected]>

---
 drivers/gpu/drm/selftests/Makefile            |   3 +-
 .../selftests/drm_damage_helper_selftests.h   |  22 +
 .../drm/selftests/test-drm_damage_helper.c    | 828 ++++++++++++++++++
 .../drm/selftests/test-drm_modeset_common.c   |  10 +-
 .../drm/selftests/test-drm_modeset_common.h   |   1 +
 5 files changed, 862 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/selftests/drm_damage_helper_selftests.h
 create mode 100644 drivers/gpu/drm/selftests/test-drm_damage_helper.c

drivers/gpu/drm/selftests/Makefile +2 -1

index 7e6581921da0..c6e63ed12f02 100644
@@ -1,3 +1,4 @@
-test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o
+test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
+		      test-drm_damage_helper.o
 
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +22 -0

new file mode 100644
index 000000000000..3a1cbe05bef0
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+selftest(damage_iter_no_damage, igt_damage_iter_no_damage)
+selftest(damage_iter_no_damage_fractional_src, igt_damage_iter_no_damage_fractional_src)
+selftest(damage_iter_no_damage_src_moved, igt_damage_iter_no_damage_src_moved)
+selftest(damage_iter_no_damage_fractional_src_moved, igt_damage_iter_no_damage_fractional_src_moved)
+selftest(damage_iter_no_damage_not_visible, igt_damage_iter_no_damage_not_visible)
+selftest(damage_iter_no_damage_no_crtc, igt_damage_iter_no_damage_no_crtc)
+selftest(damage_iter_no_damage_no_fb, igt_damage_iter_no_damage_no_fb)
+selftest(damage_iter_simple_damage, igt_damage_iter_simple_damage)
+selftest(damage_iter_single_damage, igt_damage_iter_single_damage)
+selftest(damage_iter_single_damage_intersect_src, igt_damage_iter_single_damage_intersect_src)
+selftest(damage_iter_single_damage_outside_src, igt_damage_iter_single_damage_outside_src)
+selftest(damage_iter_single_damage_fractional_src, igt_damage_iter_single_damage_fractional_src)
+selftest(damage_iter_single_damage_intersect_fractional_src, igt_damage_iter_single_damage_intersect_fractional_src)
+selftest(damage_iter_single_damage_outside_fractional_src, igt_damage_iter_single_damage_outside_fractional_src)
+selftest(damage_iter_single_damage_src_moved, igt_damage_iter_single_damage_src_moved)
+selftest(damage_iter_single_damage_fractional_src_moved, igt_damage_iter_single_damage_fractional_src_moved)
+selftest(damage_iter_damage, igt_damage_iter_damage)
+selftest(damage_iter_damage_one_intersect, igt_damage_iter_damage_one_intersect)
+selftest(damage_iter_damage_one_outside, igt_damage_iter_damage_one_outside)
+selftest(damage_iter_damage_src_moved, igt_damage_iter_damage_src_moved)
+selftest(damage_iter_damage_not_visible, igt_damage_iter_damage_not_visible)

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +828 -0

new file mode 100644
index 000000000000..9cec7778e5b2
@@ -0,0 +1,828 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test case for drm_damage_helper functions
+ */
+
+#define pr_fmt(fmt) "drm_damage_helper: " fmt
+
+#include <drm/drm_damage_helper.h>
+
+#include "test-drm_modeset_common.h"
+
+#define TESTS "drm_damage_helper_selftests.h"
+#include "drm_selftest.h"
+
+static void set_plane_src(struct drm_plane_state *state, int x1, int y1, int x2,
+			  int y2)
+{
+	state->src.x1 = x1;
+	state->src.y1 = y1;
+	state->src.x2 = x2;
+	state->src.y2 = y2;
+}
+
+static void set_damage_clip(struct drm_mode_rect *r, int x1, int y1, int x2,
+			    int y2)
+{
+	r->x1 = x1;
+	r->y1 = y1;
+	r->x2 = x2;
+	r->y2 = y2;
+}
+
+static void set_damage_blob(struct drm_property_blob *damage_blob,
+			    struct drm_mode_rect *r, uint32_t size)
+{
+	damage_blob->length = size;
+	damage_blob->data = r;
+}
+
+static void set_plane_damage(struct drm_plane_state *state,
+			     struct drm_property_blob *damage_blob)
+{
+	state->fb_damage_clips = damage_blob;
+}
+
+static bool check_damage_clip(struct drm_plane_state *state, struct drm_rect *r,
+			      int x1, int y1, int x2, int y2)
+{
+	/*
+	 * Round down x1/y1 and round up x2/y2. This is because damage is not in
+	 * 16.16 fixed point so to catch all pixels.
+	 */
+	int src_x1 = state->src.x1 >> 16;
+	int src_y1 = state->src.y1 >> 16;
+	int src_x2 = (state->src.x2 >> 16) + !!(state->src.x2 & 0xFFFF);
+	int src_y2 = (state->src.y2 >> 16) + !!(state->src.y2 & 0xFFFF);
+
+	if (x1 >= x2 || y1 >= y2) {
+		pr_err("Cannot have damage clip with no dimention.\n");
+		return false;
+	}
+
+	if (x1 < src_x1 || y1 < src_y1 || x2 > src_x2 || y2 > src_y2) {
+		pr_err("Damage cannot be outside rounded plane src.\n");
+		return false;
+	}
+
+	if (r->x1 != x1 || r->y1 != y1 || r->x2 != x2 || r->y2 != y2) {
+		pr_err("Damage = %d %d %d %d\n", r->x1, r->y1, r->x2, r->y2);
+		return false;
+	}
+
+	return true;
+}
+
+static int igt_damage_iter_no_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src same as fb size. */
+	set_plane_src(&old_state, 0, 0, fb.width << 16, fb.height << 16);
+	set_plane_src(&state, 0, 0, fb.width << 16, fb.height << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 2048, 2048));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part and it moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_crtc(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = 0,
+		.fb = &fb,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_fb(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = 0,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_simple_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage set to plane src */
+	set_damage_clip(&damage, 0, 0, 1024, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	set_damage_clip(&damage, 256, 192, 768, 576);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 768, 576));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 256, 192, 1360, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_damage_clip(&damage, 10, 10, 256, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 256, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 10, 1, 1360, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to rounded off src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 4, 1029, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	set_damage_clip(&damage, 20, 30, 256, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src with fractional part moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 20, 30, 1360, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30, 200, 180));
+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_intersect(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* 2 damage clips, one intersect plane src. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 2, 2, 1360, 1360);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30, 200, 180));
+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_outside(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return round off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should not return any damage.");
+
+	return 0;
+}
+
+#include "drm_selftest.c"
+
+/**
+ * test_drm_damage_helper - Run drm damage helper selftests.
+ */
+int test_drm_damage_helper(void)
+{
+	int err;
+
+	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
+
+	return err > 0 ? 0 : err;
+}

drivers/gpu/drm/selftests/test-drm_modeset_common.c +9 -1

index fad5209043f1..43a9ab522a66 100644
@@ -9,7 +9,15 @@
 
 static int __init test_drm_modeset_init(void)
 {
-	return test_drm_plane_helper();
+	int ret = 0, err;
+
+	if ((err = test_drm_plane_helper()))
+		ret = err;
+
+	if ((err = test_drm_damage_helper()))
+		ret = err;
+
+	return ret;
 }
 
 static void __exit test_drm_modeset_exit(void)

drivers/gpu/drm/selftests/test-drm_modeset_common.h +1 -0

index bdeba264661f..5fa8fb07e0e9 100644
@@ -14,5 +14,6 @@
 #define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
 
 int test_drm_plane_helper(void);
+int test_drm_damage_helper(void);
 
 #endif

Signature · 1 line

2.17.1

Quoted 7 lines

Selftest for drm damage helper iterator functions.

Cc Daniel Vetter <[email protected]>

Cc [email protected]

Signed-off-by Deepak Rawat <[email protected]>

Reviewed-by Daniel Vetter <[email protected]>

Reviewed-by Thomas Hellstrom <[email protected]>

I guess this needs your entire damage series to make sense, right?

Another question: Does anyone from vmwgfx want drm-misc commit rights for pushing stuff like this?

-Daniel

Quoted 8 lines

---
 drivers/gpu/drm/selftests/Makefile            |   3 +-
 .../selftests/drm_damage_helper_selftests.h   |  22 +
 .../drm/selftests/test-drm_damage_helper.c    | 828 ++++++++++++++++++
 .../drm/selftests/test-drm_modeset_common.c   |  10 +-
 .../drm/selftests/test-drm_modeset_common.h   |   1 +
 5 files changed, 862 insertions(+), 2 deletions(-)
 create mode 100644

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

Review

Quoted 3 lines

 create mode 100644 drivers/gpu/drm/selftests/test-drm_damage_helper.c

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/Makefile

drivers/gpu/drm/selftests/Makefile line 1

Quoted 5 lines

index 7e6581921da0..c6e63ed12f02 100644

drivers/gpu/drm/selftests/Makefile +0 -1

@@ -1,3 +1,4 @@
-test-drm_modeset-y := test-drm_modeset_common.o test-

drm_plane_helper.o

drivers/gpu/drm/selftests/Makefile line 1

Quoted 1 line

drivers/gpu/drm/selftests/Makefile +1 -0

+test-drm_modeset-y := test-drm_modeset_common.o test-

drm_plane_helper.o \

drivers/gpu/drm/selftests/Makefile

Quoted 3 lines

drivers/gpu/drm/selftests/Makefile +1 -0

+		      test-drm_damage_helper.o
 
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-

drm_modeset.o

Review

Quoted 1 line

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 3

Quoted 8 lines

new file mode 100644
index 000000000000..3a1cbe05bef0

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +3 -0

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+selftest(damage_iter_no_damage, igt_damage_iter_no_damage)
+selftest(damage_iter_no_damage_fractional_src,

igt_damage_iter_no_damage_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 4

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_src_moved,

igt_damage_iter_no_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 5

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_fractional_src_moved,

igt_damage_iter_no_damage_fractional_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 6

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_not_visible,

igt_damage_iter_no_damage_not_visible)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 7

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_no_crtc,

igt_damage_iter_no_damage_no_crtc)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 8

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_no_fb,

igt_damage_iter_no_damage_no_fb)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

Quoted 3 lines

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +3 -0

+selftest(damage_iter_simple_damage, igt_damage_iter_simple_damage)
+selftest(damage_iter_single_damage, igt_damage_iter_single_damage)
+selftest(damage_iter_single_damage_intersect_src,

igt_damage_iter_single_damage_intersect_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 12

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_outside_src,

igt_damage_iter_single_damage_outside_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 13

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_fractional_src,

igt_damage_iter_single_damage_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 14

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_intersect_fractional_src,

igt_damage_iter_single_damage_intersect_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 15

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_outside_fractional_src,

igt_damage_iter_single_damage_outside_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 16

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_src_moved,

igt_damage_iter_single_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 17

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_fractional_src_moved,

igt_damage_iter_single_damage_fractional_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 19

Quoted 2 lines

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +2 -0

+selftest(damage_iter_damage, igt_damage_iter_damage)
+selftest(damage_iter_damage_one_intersect,

igt_damage_iter_damage_one_intersect)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 20

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_one_outside,

igt_damage_iter_damage_one_outside)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 21

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_src_moved,

igt_damage_iter_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 22

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_not_visible,

igt_damage_iter_damage_not_visible)

Review

Quoted 1 line

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 41 lines

new file mode 100644
index 000000000000..9cec7778e5b2

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +36 -0

@@ -0,0 +1,828 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test case for drm_damage_helper functions
+ */
+
+#define pr_fmt(fmt) "drm_damage_helper: " fmt
+
+#include <drm/drm_damage_helper.h>
+
+#include "test-drm_modeset_common.h"
+
+#define TESTS "drm_damage_helper_selftests.h"
+#include "drm_selftest.h"
+
+static void set_plane_src(struct drm_plane_state *state, int x1, int y1, int x2,
+			  int y2)
+{
+	state->src.x1 = x1;
+	state->src.y1 = y1;
+	state->src.x2 = x2;
+	state->src.y2 = y2;
+}
+
+static void set_damage_clip(struct drm_mode_rect *r, int x1, int y1, int x2,
+			    int y2)
+{
+	r->x1 = x1;
+	r->y1 = y1;
+	r->x2 = x2;
+	r->y2 = y2;
+}
+
+static void set_damage_blob(struct drm_property_blob *damage_blob,
+			    struct drm_mode_rect *r, uint32_t size)
+{
+	damage_blob->length = size;

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 46

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	damage_blob->data = r;
+}
+
+static void set_plane_damage(struct drm_plane_state *state,
+			     struct drm_property_blob *damage_blob)
+{
+	state->fb_damage_clips = damage_blob;
+}
+
+static bool check_damage_clip(struct drm_plane_state *state, struct

drm_rect *r,

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 4 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +4 -0

+			      int x1, int y1, int x2, int y2)
+{
+	/*
+	 * Round down x1/y1 and round up x2/y2. This is because damage is not

in

Quoted 405 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +405 -0

+	 * 16.16 fixed point so to catch all pixels.
+	 */
+	int src_x1 = state->src.x1 >> 16;
+	int src_y1 = state->src.y1 >> 16;
+	int src_x2 = (state->src.x2 >> 16) + !!(state->src.x2 & 0xFFFF);
+	int src_y2 = (state->src.y2 >> 16) + !!(state->src.y2 & 0xFFFF);
+
+	if (x1 >= x2 || y1 >= y2) {
+		pr_err("Cannot have damage clip with no dimention.\n");
+		return false;
+	}
+
+	if (x1 < src_x1 || y1 < src_y1 || x2 > src_x2 || y2 > src_y2) {
+		pr_err("Damage cannot be outside rounded plane src.\n");
+		return false;
+	}
+
+	if (r->x1 != x1 || r->y1 != y1 || r->x2 != x2 || r->y2 != y2) {
+		pr_err("Damage = %d %d %d %d\n", r->x1, r->y1, r->x2, r->y2);
+		return false;
+	}
+
+	return true;
+}
+
+static int igt_damage_iter_no_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src same as fb size. */
+	set_plane_src(&old_state, 0, 0, fb.width << 16, fb.height << 16);
+	set_plane_src(&state, 0, 0, fb.width << 16, fb.height << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 2048, 2048));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part and it moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_crtc(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = 0,
+		.fb = &fb,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_fb(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = 0,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_simple_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage set to plane src */
+	set_damage_clip(&damage, 0, 0, 1024, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	set_damage_clip(&damage, 256, 192, 768, 576);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 768, 576));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 256, 192, 1360, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_damage_clip(&damage, 10, 10, 256, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 256, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_fractional_src(void

*ignored)

Quoted 29 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +29 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 10, 1, 1360, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to rounded off src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 4, 1029, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_fractional_src(void

*ignored)

Quoted 65 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +65 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	set_damage_clip(&damage, 20, 30, 256, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src_moved(void

*ignored)

Quoted 59 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +59 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src with fractional part moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 20, 30, 1360, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30,

200, 180));

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 650

Quoted 2 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +2 -0

+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 240, 200,

280, 250));

Quoted 31 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +31 -0

+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_intersect(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* 2 damage clips, one intersect plane src. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 2, 2, 1360, 1360);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30,

200, 180));

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 693

Quoted 2 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +2 -0

+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029,

773));

Review

Quoted 136 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +135 -0

+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_outside(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return round off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should not return any damage.");
+
+	return 0;
+}
+
+#include "drm_selftest.c"
+
+/**
+ * test_drm_damage_helper - Run drm damage helper selftests.
+ */
+int test_drm_damage_helper(void)
+{
+	int err;
+
+	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
+
+	return err > 0 ? 0 : err;
+}

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_modeset_common.c

Review

Quoted 21 lines

index fad5209043f1..43a9ab522a66 100644

drivers/gpu/drm/selftests/test-drm_modeset_common.c +9 -1

@@ -9,7 +9,15 @@
 
 static int __init test_drm_modeset_init(void)
 {
-	return test_drm_plane_helper();
+	int ret = 0, err;
+
+	if ((err = test_drm_plane_helper()))
+		ret = err;
+
+	if ((err = test_drm_damage_helper()))
+		ret = err;
+
+	return ret;
 }
 
 static void __exit test_drm_modeset_exit(void)

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_modeset_common.h

Quoted 9 lines

index bdeba264661f..5fa8fb07e0e9 100644

drivers/gpu/drm/selftests/test-drm_modeset_common.h +1 -0

@@ -14,5 +14,6 @@
 #define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
 
 int test_drm_plane_helper(void);
+int test_drm_damage_helper(void);
 

Quoted 4 lines

drivers/gpu/drm/selftests/test-drm_modeset_common.h +0 -1

 #endif
--

2.17.1

--
Daniel Vetter
Software Engineer, Intel Corporation
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fblog.ffwll.
ch&amp;data=02%7C01%7Cdrawat%40vmware.com%7C26ffc4b4ed0b4da17da 508d633fb73a4%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C63675 3552420942632&amp;sdata=rq68c2dOssSNp2B1gC6verDYoItm6mSGPS4oIwJzJa c%3D&amp;reserved=0

Quoted 10 lines · Deepak Rawat

Quoted 7 lines

Selftest for drm damage helper iterator functions.

Cc Daniel Vetter <[email protected]>

Cc [email protected]

Signed-off-by Deepak Rawat <[email protected]>

Reviewed-by Daniel Vetter <[email protected]>

Reviewed-by Thomas Hellstrom <[email protected]>

I guess this needs your entire damage series to make sense, right?

Ah yes sorry. Although this patch is same as what I sent earlier except linking with test-drm_modeset.ko

Quoted 3 lines

Another question: Does anyone from vmwgfx want drm-misc commit rights for pushing stuff like this?

Hi Daniel, Thanks for the suggestion. I am not sure about eligibility criteria for commit rights but I think I will wait until drm-mics is moved to gitlab and I have more experience working with open-source. Beside me Thomas works on vmwgfx, I am not sure if he already have commit rights.

Quoted 949 lines

-Daniel

Quoted 8 lines

---
 drivers/gpu/drm/selftests/Makefile            |   3 +-
 .../selftests/drm_damage_helper_selftests.h   |  22 +
 .../drm/selftests/test-drm_damage_helper.c    | 828 ++++++++++++++++++
 .../drm/selftests/test-drm_modeset_common.c   |  10 +-
 .../drm/selftests/test-drm_modeset_common.h   |   1 +
 5 files changed, 862 insertions(+), 2 deletions(-)
 create mode 100644

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

Review

Quoted 3 lines

 create mode 100644 drivers/gpu/drm/selftests/test-drm_damage_helper.c

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/Makefile

drivers/gpu/drm/selftests/Makefile line 1

Quoted 5 lines

index 7e6581921da0..c6e63ed12f02 100644

drivers/gpu/drm/selftests/Makefile +0 -1

@@ -1,3 +1,4 @@
-test-drm_modeset-y := test-drm_modeset_common.o test-

drm_plane_helper.o

drivers/gpu/drm/selftests/Makefile line 1

Quoted 1 line

drivers/gpu/drm/selftests/Makefile +1 -0

+test-drm_modeset-y := test-drm_modeset_common.o test-

drm_plane_helper.o \

drivers/gpu/drm/selftests/Makefile

Quoted 3 lines

drivers/gpu/drm/selftests/Makefile +1 -0

+		      test-drm_damage_helper.o
 
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-

drm_modeset.o

Review

Quoted 1 line

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 3

Quoted 8 lines

new file mode 100644
index 000000000000..3a1cbe05bef0

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +3 -0

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+selftest(damage_iter_no_damage, igt_damage_iter_no_damage)
+selftest(damage_iter_no_damage_fractional_src,

igt_damage_iter_no_damage_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 4

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_src_moved,

igt_damage_iter_no_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 5

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_fractional_src_moved,

igt_damage_iter_no_damage_fractional_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 6

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_not_visible,

igt_damage_iter_no_damage_not_visible)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 7

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_no_crtc,

igt_damage_iter_no_damage_no_crtc)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 8

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_no_damage_no_fb,

igt_damage_iter_no_damage_no_fb)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h

Quoted 3 lines

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +3 -0

+selftest(damage_iter_simple_damage, igt_damage_iter_simple_damage)
+selftest(damage_iter_single_damage, igt_damage_iter_single_damage)
+selftest(damage_iter_single_damage_intersect_src,

igt_damage_iter_single_damage_intersect_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 12

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_outside_src,

igt_damage_iter_single_damage_outside_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 13

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_fractional_src,

igt_damage_iter_single_damage_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 14

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_intersect_fractional_src,

igt_damage_iter_single_damage_intersect_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 15

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_outside_fractional_src,

igt_damage_iter_single_damage_outside_fractional_src)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 16

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_src_moved,

igt_damage_iter_single_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 17

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_single_damage_fractional_src_moved,

igt_damage_iter_single_damage_fractional_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 19

Quoted 2 lines

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +2 -0

+selftest(damage_iter_damage, igt_damage_iter_damage)
+selftest(damage_iter_damage_one_intersect,

igt_damage_iter_damage_one_intersect)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 20

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_one_outside,

igt_damage_iter_damage_one_outside)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 21

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_src_moved,

igt_damage_iter_damage_src_moved)

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h line 22

Quoted 1 line

drivers/gpu/drm/selftests/drm_damage_helper_selftests.h new file +1 -0

+selftest(damage_iter_damage_not_visible,

igt_damage_iter_damage_not_visible)

Review

Quoted 1 line

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 41 lines

new file mode 100644
index 000000000000..9cec7778e5b2

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +36 -0

@@ -0,0 +1,828 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test case for drm_damage_helper functions
+ */
+
+#define pr_fmt(fmt) "drm_damage_helper: " fmt
+
+#include <drm/drm_damage_helper.h>
+
+#include "test-drm_modeset_common.h"
+
+#define TESTS "drm_damage_helper_selftests.h"
+#include "drm_selftest.h"
+
+static void set_plane_src(struct drm_plane_state *state, int x1, int y1, int x2,
+			  int y2)
+{
+	state->src.x1 = x1;
+	state->src.y1 = y1;
+	state->src.x2 = x2;
+	state->src.y2 = y2;
+}
+
+static void set_damage_clip(struct drm_mode_rect *r, int x1, int y1, int x2,
+			    int y2)
+{
+	r->x1 = x1;
+	r->y1 = y1;
+	r->x2 = x2;
+	r->y2 = y2;
+}
+
+static void set_damage_blob(struct drm_property_blob *damage_blob,
+			    struct drm_mode_rect *r, uint32_t size)
+{
+	damage_blob->length = size;

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 46

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	damage_blob->data = r;
+}
+
+static void set_plane_damage(struct drm_plane_state *state,
+			     struct drm_property_blob *damage_blob)
+{
+	state->fb_damage_clips = damage_blob;
+}
+
+static bool check_damage_clip(struct drm_plane_state *state, struct

drm_rect *r,

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 4 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +4 -0

+			      int x1, int y1, int x2, int y2)
+{
+	/*
+	 * Round down x1/y1 and round up x2/y2. This is because damage is not

in

Quoted 405 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +405 -0

+	 * 16.16 fixed point so to catch all pixels.
+	 */
+	int src_x1 = state->src.x1 >> 16;
+	int src_y1 = state->src.y1 >> 16;
+	int src_x2 = (state->src.x2 >> 16) + !!(state->src.x2 & 0xFFFF);
+	int src_y2 = (state->src.y2 >> 16) + !!(state->src.y2 & 0xFFFF);
+
+	if (x1 >= x2 || y1 >= y2) {
+		pr_err("Cannot have damage clip with no dimention.\n");
+		return false;
+	}
+
+	if (x1 < src_x1 || y1 < src_y1 || x2 > src_x2 || y2 > src_y2) {
+		pr_err("Damage cannot be outside rounded plane src.\n");
+		return false;
+	}
+
+	if (r->x1 != x1 || r->y1 != y1 || r->x2 != x2 || r->y2 != y2) {
+		pr_err("Damage = %d %d %d %d\n", r->x1, r->y1, r->x2, r->y2);
+		return false;
+	}
+
+	return true;
+}
+
+static int igt_damage_iter_no_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src same as fb size. */
+	set_plane_src(&old_state, 0, 0, fb.width << 16, fb.height << 16);
+	set_plane_src(&state, 0, 0, fb.width << 16, fb.height << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 2048, 2048));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_fractional_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part and it moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_crtc(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = 0,
+		.fb = &fb,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_no_damage_no_fb(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = 0,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_simple_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage set to plane src */
+	set_damage_clip(&damage, 0, 0, 1024, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	set_damage_clip(&damage, 256, 192, 768, 576);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 768, 576));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 256, 192, 1360, 768);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 1024, 768));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_damage_clip(&damage, 10, 10, 256, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 256, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_intersect_fractional_src(void

*ignored)

Quoted 29 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +29 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 10, 1, 1360, 330);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage clipped to rounded off src.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 4, 1029, 330));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_outside_fractional_src(void

*ignored)

Quoted 65 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +65 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src has fractional part. */
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage clip outside plane src */
+	set_damage_clip(&damage, 1360, 1360, 1380, 1380);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should have no damage.");
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src moved since old plane state. */
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 10 << 16, 10 << 16,
+		      (10 + 1024) << 16, (10 + 768) << 16);
+	set_damage_clip(&damage, 20, 30, 256, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
+
+	return 0;
+}
+
+static int igt_damage_iter_single_damage_fractional_src_moved(void

*ignored)

Quoted 59 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +59 -0

+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage;
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	/* Plane src with fractional part moved since old plane state. */
+	set_plane_src(&old_state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* Damage intersect with plane src. */
+	set_damage_clip(&damage, 20, 30, 1360, 256);
+	set_damage_blob(&damage_blob, &damage, sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30,

200, 180));

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 650

Quoted 2 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +2 -0

+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 240, 200,

280, 250));

Quoted 31 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +31 -0

+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_intersect(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x40002, 0x40002,

drivers/gpu/drm/selftests/test-drm_damage_helper.c

Quoted 10 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +10 -0

+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	/* 2 damage clips, one intersect plane src. */
+	set_damage_clip(&damage[0], 20, 30, 200, 180);
+	set_damage_clip(&damage[1], 2, 2, 1360, 1360);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip) {
+		if (num_hits == 0)
+			FAIL_ON(!check_damage_clip(&state, &clip, 20, 30,

200, 180));

drivers/gpu/drm/selftests/test-drm_damage_helper.c line 693

Quoted 2 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +2 -0

+		if (num_hits == 1)
+			FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029,

773));

Review

Quoted 136 lines

drivers/gpu/drm/selftests/test-drm_damage_helper.c new file +135 -0

+		num_hits++;
+	}
+
+	FAIL(num_hits != 2, "Should return damage when set.");
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_one_outside(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0, 0, 1024 << 16, 768 << 16);
+	set_plane_src(&state, 0, 0, 1024 << 16, 768 << 16);
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return damage when set.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_src_moved(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = true,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 1, "Should return round off plane src as damage.");
+	FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
+
+	return 0;
+}
+
+static int igt_damage_iter_damage_not_visible(void *ignored)
+{
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_plane_state old_state;
+	struct drm_property_blob damage_blob;
+	struct drm_mode_rect damage[2];
+	struct drm_rect clip;
+	uint32_t num_hits = 0;
+
+	struct drm_framebuffer fb = {
+		.width = 2048,
+		.height = 2048
+	};
+
+	struct drm_plane_state state = {
+		.crtc = ZERO_SIZE_PTR,
+		.fb = &fb,
+		.visible = false,
+	};
+
+	set_plane_src(&old_state, 0x40002, 0x40002,
+		      0x40002 + (1024 << 16), 0x40002 + (768 << 16));
+	set_plane_src(&state, 0x3fffe, 0x3fffe,
+		      0x3fffe + (1024 << 16), 0x3fffe + (768 << 16));
+	/* 2 damage clips, one outside plane src. */
+	set_damage_clip(&damage[0], 1360, 1360, 1380, 1380);
+	set_damage_clip(&damage[1], 240, 200, 280, 250);
+	set_damage_blob(&damage_blob, &damage[0], sizeof(damage));
+	set_plane_damage(&state, &damage_blob);
+	drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
+	drm_atomic_for_each_plane_damage(&iter, &clip)
+		num_hits++;
+
+	FAIL(num_hits != 0, "Should not return any damage.");
+
+	return 0;
+}
+
+#include "drm_selftest.c"
+
+/**
+ * test_drm_damage_helper - Run drm damage helper selftests.
+ */
+int test_drm_damage_helper(void)
+{
+	int err;
+
+	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
+
+	return err > 0 ? 0 : err;
+}

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_modeset_common.c

Review

Quoted 21 lines

index fad5209043f1..43a9ab522a66 100644

drivers/gpu/drm/selftests/test-drm_modeset_common.c +9 -1

@@ -9,7 +9,15 @@
 
 static int __init test_drm_modeset_init(void)
 {
-	return test_drm_plane_helper();
+	int ret = 0, err;
+
+	if ((err = test_drm_plane_helper()))
+		ret = err;
+
+	if ((err = test_drm_damage_helper()))
+		ret = err;
+
+	return ret;
 }
 
 static void __exit test_drm_modeset_exit(void)

(quoted diff) +0 -0

b/drivers/gpu/drm/selftests/test-drm_modeset_common.h

Quoted 9 lines

index bdeba264661f..5fa8fb07e0e9 100644

drivers/gpu/drm/selftests/test-drm_modeset_common.h +1 -0

@@ -14,5 +14,6 @@
 #define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
 
 int test_drm_plane_helper(void);
+int test_drm_damage_helper(void);
 

Quoted 13 lines

Quoted 4 lines

drivers/gpu/drm/selftests/test-drm_modeset_common.h +0 -1

 #endif
--

2.17.1

--
Daniel Vetter
Software Engineer, Intel Corporation
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fblog.ffwll.
ch&amp;data=02%7C01%7Cdrawat%40vmware.com%7C26ffc4b4ed0b4da17da 508d633fb73a4%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C63675 3552420942632&amp;sdata=rq68c2dOssSNp2B1gC6verDYoItm6mSGPS4oIwJzJa c%3D&amp;reserved=0

_______________________________________________
dri-devel mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/dri-devel