Re: [PATCH v3 04/18] drm/selftest: Add drm damage helper selftest

[Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@arm.com>]

On Tue, Oct 16, 2018 at 02:21:17PM +0200, Daniel Vetter wrote:
> On Mon, Oct 15, 2018 at 04:11:41PM +0000, Deepak Singh Rawat wrote:
> > > On Wed, Oct 10, 2018 at 05:16:43PM -0700, Deepak Rawat wrote:
> > > > Selftest for drm damage helper iterator functions.
> > > >
> > > > Cc: ville.syrjala@linux.intel.com
> > > > Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> > > > Cc: Pekka Paalanen <ppaalanen@gmail.com>
> > > > Cc: Daniel Stone <daniel@fooishbar.org>
> > > > Cc: intel-gfx@lists.freedesktop.org
> > > > Cc: igt-dev@lists.freedesktop.org
> > > > Cc: petri.latvala@intel.com
> > > > Cc: chris@chris-wilson.co.uk
> > > > Signed-off-by: Deepak Rawat <drawat@vmware.com>
> > > > ---
> > > >  drivers/gpu/drm/selftests/Makefile            |   3 +-
> > > >  .../selftests/drm_damage_helper_selftests.h   |  22 +
> > > >  .../drm/selftests/test-drm_damage_helper.c    | 844
> > > ++++++++++++++++++
> > > >  3 files changed, 868 insertions(+), 1 deletion(-)
> > > >  create mode 100644
> > > drivers/gpu/drm/selftests/drm_damage_helper_selftests.h
> > > >  create mode 100644 drivers/gpu/drm/selftests/test-
> > > drm_damage_helper.c
> > > >
> > > > diff --git a/drivers/gpu/drm/selftests/Makefile
> > > b/drivers/gpu/drm/selftests/Makefile
> > > > index 9fc349fa18e9..88ac216f5962 100644
> > > > --- a/drivers/gpu/drm/selftests/Makefile
> > > > +++ b/drivers/gpu/drm/selftests/Makefile
> > > > @@ -1 +1,2 @@
> > > > -obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm-
> > > helper.o
> > > > +obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm-
> > > helper.o \
> > > > +				    test-drm_damage_helper.o
> > > 
> > > With the testcase intagrated into the test-drm-helper.ko module, for
> > > patches 1-4 in this series:
> > > 
> > > Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> > > 
> > > Obviously needs some adjusting on the igt side too, since we seem to be
> > > missing the igt scaffolding for tests-drm-helper.ko.
> > > -Daniel
> > 
> > Hi Daniel,
> > 
> > Thanks for the review. I am a little confused here. Should we have single
> > kernel module for drm plane helper selftest and damage helper selftest?
> > Also shall I rename the kernel selfttest to kms_*?
> > 
> > For user-space igt test it should be it makes sense to rename to kms_selftets?
> 
> Since I went back&forth on this way too many times:
> - igt should be called kms_selftest. Please work together with igt
>   maintainers (Arek and Petri), since we also need to update the CI
>   building infrastructure to make sure it updates the list of subtests
>   implemented by the kernel.
> 
> - Kernel module I'd call test-drm_modeset.ko. That kernel module can then
>   include the existing test-drm-helper.c (could probably rename to
>   test-drm_plane_helper.c for clarity) and your new damage helper (named
>   test-drm_damage_helper.c for consistency).
> 
> Does that make sense to everyone?

I was trying to add some selftests, as well here [1], with that in
mind, I think it makes sense to have just one module, call it
"test-drm_modeset" or whatever and separate the tests source code base
on whatever core functionality they are testing. 

Besides compiling everything together, probably some stuff will have
to move out of test-drm-helper.c into some common header. For example
this "FAIL/FAIL_ON" macros 

[1] https://lists.freedesktop.org/archives/dri-devel/2018-October/192973.html

> 
> Thanks, Daniel
> 
> > 
> > > 
> > > > diff --git a/drivers/gpu/drm/selftests/drm_damage_helper_selftests.h
> > > b/drivers/gpu/drm/selftests/drm_damage_helper_selftests.h
> > > > new file mode 100644
> > > > index 000000000000..3a1cbe05bef0
> > > > --- /dev/null
> > > > +++ b/drivers/gpu/drm/selftests/drm_damage_helper_selftests.h
> > > > @@ -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)
> > > > diff --git a/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> > > b/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> > > > new file mode 100644
> > > > index 000000000000..17754734c47a
> > > > --- /dev/null
> > > > +++ b/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> > > > @@ -0,0 +1,844 @@
> > > > +/* SPDX-License-Identifier: GPL-2.0 */
> > > > +/*
> > > > + * Test case for drm_damage_helper functions
> > > > + */
> > > > +
> > > > +#define pr_fmt(fmt) "drm_damage_helper: " fmt
> > > > +
> > > > +#include <linux/module.h>
> > > > +#include <drm/drm_damage_helper.h>
> > > > +
> > > > +#define TESTS "drm_damage_helper_selftests.h"
> > > > +#include "drm_selftest.h"
> > > > +
> > > > +#define FAIL(test, msg, ...) \
> > > > +	do { \
> > > > +		if (test) { \
> > > > +			pr_err("%s/%u: " msg, __FUNCTION__, __LINE__,
> > > ##__VA_ARGS__); \
> > > > +			return -EINVAL; \
> > > > +		} \
> > > > +	} while (0)
> > > > +
> > > > +#define FAIL_ON(x) FAIL((x), "%s", "FAIL_ON(" __stringify(x) ")\n")
> > > > +
> > > > +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"
> > > > +
> > > > +static int __init test_drm_damage_helper_init(void)
> > > > +{
> > > > +	int err;
> > > > +
> > > > +	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
> > > > +
> > > > +	return err > 0 ? 0 : err;
> > > > +}
> > > > +
> > > > +static void __exit test_drm_damage_helper_exit(void)
> > > > +{
> > > > +}
> > > > +
> > > > +module_init(test_drm_damage_helper_init);
> > > > +module_exit(test_drm_damage_helper_exit);
> > > > +
> > > > +MODULE_AUTHOR("VMware Inc.");
> > > > +MODULE_LICENSE("GPL");
> > > > --
> > > > 2.17.1
> > > >
> > > 
> > > --
> > > Daniel Vetter
> > > Software Engineer, Intel Corporation
> > > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fblog.ff
> > > wll.ch&amp;data=02%7C01%7Cdrawat%40vmware.com%7C64e7deb3dc264c
> > > 6f11a008d62f95d96e%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7
> > > C636748717979714197&amp;sdata=vCz71L%2BoMpFSGFZifg%2F0bR1CxzReLa
> > > 7Dy3ss3UKeLrU%3D&amp;reserved=0
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Cheers,
Alex G
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