Re: [PATCH i-g-t] tests: Add kms_atomic_interruptible test, v2.

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Op 08-09-17 om 09:08 schreef Daniel Vetter:
> On Wed, Sep 06, 2017 at 02:30:28PM +0200, Maarten Lankhorst wrote:
>> This tests the various parts of atomic that I want to make
>> interruptible. Running with --debug shows the stats from
>> __igt_sigiter_continue, which can be used to make sure that
>> we don't fall over.
>>
>> The default igt kms helpers use drmIoctl, which is not intercepted
>> by igt_while_interruptible. Only igt_ioctl is. This means we have
>> to call the ioctls manually here.
>>
>> Changes since v1:
>> - Implement interruptible DPMS checking too.
>> - Use igt_ioctl + igt_while_interruptible, instead of the signal helper
>>   shotgun.
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> Cc: Daniel Stone <daniels@xxxxxxxxxxxxx>
>> ---
>>  lib/igt_kms.c                    |   3 +-
>>  lib/igt_kms.h                    |   1 +
>>  tests/Makefile.sources           |   1 +
>>  tests/kms_atomic_interruptible.c | 319 +++++++++++++++++++++++++++++++++++++++
>>  4 files changed, 323 insertions(+), 1 deletion(-)
>>  create mode 100644 tests/kms_atomic_interruptible.c
>>
>> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
>> index 14e2701c3afd..1f57e8981347 100644
>> --- a/lib/igt_kms.c
>> +++ b/lib/igt_kms.c
>> @@ -186,7 +186,8 @@ const char *igt_crtc_prop_names[IGT_NUM_CRTC_PROPS] = {
>>  
>>  const char *igt_connector_prop_names[IGT_NUM_CONNECTOR_PROPS] = {
>>  	"scaling mode",
>> -	"CRTC_ID"
>> +	"CRTC_ID",
>> +	"DPMS"
>>  };
>>  
>>  /*
>> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
>> index e5dc329b161e..3d1061fa08c8 100644
>> --- a/lib/igt_kms.h
>> +++ b/lib/igt_kms.h
>> @@ -114,6 +114,7 @@ extern const char *igt_crtc_prop_names[];
>>  enum igt_atomic_connector_properties {
>>         IGT_CONNECTOR_SCALING_MODE = 0,
>>         IGT_CONNECTOR_CRTC_ID,
>> +       IGT_CONNECTOR_DPMS,
>>         IGT_NUM_CONNECTOR_PROPS
>>  };
>>  
>> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
>> index 0f4e39af10a1..cf542df181a8 100644
>> --- a/tests/Makefile.sources
>> +++ b/tests/Makefile.sources
>> @@ -172,6 +172,7 @@ TESTS_progs = \
>>  	kms_3d \
>>  	kms_addfb_basic \
>>  	kms_atomic \
>> +	kms_atomic_interruptible \
>>  	kms_atomic_transition \
>>  	kms_busy \
>>  	kms_ccs \
>> diff --git a/tests/kms_atomic_interruptible.c b/tests/kms_atomic_interruptible.c
>> new file mode 100644
>> index 000000000000..6ec7a666b995
>> --- /dev/null
>> +++ b/tests/kms_atomic_interruptible.c
>> @@ -0,0 +1,319 @@
>> +/*
>> + * Copyright © 2016 Intel Corporation
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a
>> + * copy of this software and associated documentation files (the "Software"),
>> + * to deal in the Software without restriction, including without limitation
>> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + * and/or sell copies of the Software, and to permit persons to whom the
>> + * Software is furnished to do so, subject to the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the next
>> + * paragraph) shall be included in all copies or substantial portions of the
>> + * Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
>> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
>> + * IN THE SOFTWARE.
>> + */
>> +
>> +#include "igt.h"
>> +#include "drmtest.h"
>> +#include "sw_sync.h"
>> +
>> +enum plane_test_type
>> +{
>> +	test_legacy_modeset,
>> +	test_atomic_modeset,
>> +	test_legacy_dpms,
>> +	test_setplane,
>> +	test_setcursor,
>> +	test_pageflip
>> +};
>> +
>> +static int block_plane(igt_display_t *display, igt_output_t *output, enum plane_test_type test_type, igt_plane_t *plane)
>> +{
>> +	int timeline = sw_sync_timeline_create();
>> +
>> +	igt_fork(child, 1) {
>> +		/* Ignore the signal helper, we need to block indefinitely on the fence. */
>> +		signal(SIGCONT, SIG_IGN);
>> +
>> +		if (test_type == test_legacy_modeset || test_type == test_atomic_modeset) {
>> +			igt_output_set_pipe(output, PIPE_NONE);
>> +			igt_plane_set_fb(plane, NULL);
>> +		}
>> +		igt_plane_set_fence_fd(plane, sw_sync_timeline_create_fence(timeline, 1));
>> +
>> +		igt_display_commit2(display, COMMIT_ATOMIC);
>> +	}
>> +
>> +	return timeline;
>> +}
>> +
>> +static void unblock(int block)
>> +{
>> +	sw_sync_timeline_inc(block, 1);
>> +	close(block);
>> +}
>> +
>> +static void ev_page_flip(int fd, unsigned seq, unsigned tv_sec, unsigned tv_usec, void *user_data)
>> +{
>> +	igt_debug("Retrieved vblank seq: %u on unk\n", seq);
>> +}
>> +
>> +static drmEventContext drm_events = {
>> +	.version = 2,
>> +	.page_flip_handler = ev_page_flip
>> +};
>> +
>> +static void run_plane_test(igt_display_t *display, enum pipe pipe, igt_output_t *output,
>> +			   enum plane_test_type test_type, unsigned plane_type)
>> +{
>> +	drmModeModeInfo *mode;
>> +	igt_fb_t fb, fb2;
>> +	igt_plane_t *primary, *plane;
>> +	int block;
>> +
>> +	/*
>> +	 * Make sure we start with everything disabled to force a real modeset.
>> +	 * igt_display_init only sets sw state, and assumes the first test doesn't care
>> +	 * about hw state.
>> +	 */
>> +	igt_display_commit2(display, COMMIT_ATOMIC);
>> +
>> +	igt_output_set_pipe(output, pipe);
>> +
>> +	primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
>> +	plane = igt_output_get_plane_type(output, plane_type);
>> +	mode = igt_output_get_mode(output);
>> +
>> +	igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
>> +		      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb);
>> +
>> +	switch (plane_type) {
>> +	case DRM_PLANE_TYPE_PRIMARY:
>> +		igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
>> +			      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb2);
>> +		break;
>> +	case DRM_PLANE_TYPE_CURSOR:
>> +		igt_create_fb(display->drm_fd, 64, 64,
>> +		      DRM_FORMAT_ARGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb2);
>> +		break;
>> +	}
>> +
>> +	if (test_type != test_legacy_modeset && test_type != test_atomic_modeset) {
>> +		igt_plane_set_fb(primary, &fb);
>> +		igt_display_commit2(display, COMMIT_ATOMIC);
>> +	}
>> +
>> +	igt_plane_set_fb(plane, &fb2);
>> +
>> +	block = block_plane(display, output, test_type, plane);
>> +	sleep(1);
> Ugh. Oh well.
>
>> +
>> +	igt_fork(child, 1) {
>> +		signal(SIGCONT, SIG_IGN);
>> +		igt_assert(sleep(5) == 0);
>> +
>> +		unblock(block);
>> +	}
>> +
>> +	/* run the test */
>> +	igt_while_interruptible(true) {
>> +		switch (test_type) {
>> +		case test_legacy_modeset: {
>> +			struct drm_mode_crtc crtc = {
>> +				.set_connectors_ptr = (uint64_t)(uintptr_t)&output->id,
>> +				.count_connectors = 1,
>> +				.crtc_id = primary->pipe->crtc_id,
>> +				.fb_id = fb2.fb_id,
>> +				.mode_valid = 1,
>> +				.mode = *(struct drm_mode_modeinfo*)mode,
>> +			};
>> +
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_SETCRTC, &crtc));
>> +			break;
>> +		}
>> +		case test_atomic_modeset: {
> Why all these {} for each case statement? I've never seen that before,
> looks funny and un-C.

drm_atomic_get_property uses it so you might have seen it, but never noticed.
It's required to declare the local variables in a case statement.

>
>> +			uint32_t objs[3] = { plane->pipe->crtc_id, output->id, plane->drm_plane->plane_id };
>> +			uint32_t count_props[3] = { 2, 1, 6 };
>> +			uint32_t props[] = {
>> +				/* crtc: 2 props */
>> +				plane->pipe->atomic_props_crtc[IGT_CRTC_MODE_ID],
>> +				plane->pipe->atomic_props_crtc[IGT_CRTC_ACTIVE],
>> +				/* connector: 1 prop */
>> +				output->config.atomic_props_connector[IGT_CONNECTOR_CRTC_ID],
>> +				/* plane: remainder props */
>> +				plane->atomic_props_plane[IGT_PLANE_CRTC_ID],
>> +				plane->atomic_props_plane[IGT_PLANE_FB_ID],
>> +				plane->atomic_props_plane[IGT_PLANE_SRC_W],
>> +				plane->atomic_props_plane[IGT_PLANE_SRC_H],
>> +				plane->atomic_props_plane[IGT_PLANE_CRTC_W],
>> +				plane->atomic_props_plane[IGT_PLANE_CRTC_H]
>> +			};
>> +			uint64_t prop_vals[] = {
>> +				/* crtc */
>> +				0, /* mode_id, filled in below */
>> +				true,
>> +				/* connector */
>> +				plane->pipe->crtc_id,
>> +				/* plane */
>> +				plane->pipe->crtc_id,
>> +				fb2.fb_id,
>> +				IGT_FIXED(fb2.width, 0),
>> +				IGT_FIXED(fb2.height, 0),
>> +				fb2.width,
>> +				fb2.height
>> +			};
>> +			uint32_t mode_blob;
>> +
>> +			struct drm_mode_atomic atm = {
>> +				.flags = DRM_MODE_ATOMIC_ALLOW_MODESET,
>> +				.count_objs = 3, /* crtc, connector, plane */
>> +				.objs_ptr = (uint64_t)(uintptr_t)&objs,
>> +				.count_props_ptr = (uint64_t)(uintptr_t)&count_props,
>> +				.props_ptr = (uint64_t)(uintptr_t)&props,
>> +				.prop_values_ptr = (uint64_t)(uintptr_t)&prop_vals,
>> +			};
>> +
>> +			do_or_die(drmModeCreatePropertyBlob(display->drm_fd, mode, sizeof(*mode), &mode_blob));
>> +			prop_vals[0] = mode_blob;
>> +
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_ATOMIC, &atm));
>> +
>> +			do_or_die(drmModeDestroyPropertyBlob(display->drm_fd, mode_blob));
>> +			break;
>> +		}
>> +		case test_legacy_dpms: {
>> +			struct drm_mode_connector_set_property prop = {
>> +				.value = DRM_MODE_DPMS_OFF,
>> +				.prop_id = output->config.atomic_props_connector[IGT_CONNECTOR_DPMS],
>> +				.connector_id = output->id,
>> +			};
>> +
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_SETPROPERTY, &prop));
>> +			break;
>> +		}
>> +		case test_setcursor: {
>> +			struct drm_mode_cursor cur = {
>> +				.flags = DRM_MODE_CURSOR_BO,
>> +				.crtc_id = plane->pipe->crtc_id,
>> +				.width = fb2.width,
>> +				.height = fb2.height,
>> +				.handle = fb2.gem_handle,
>> +			};
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_CURSOR, &cur));
>> +			break;
>> +		}
>> +		case test_setplane: {
>> +			struct drm_mode_set_plane setplane = {
>> +				.plane_id = plane->drm_plane->plane_id,
>> +				.crtc_id = plane->pipe->crtc_id,
>> +				.fb_id = fb2.fb_id,
>> +				.crtc_w = fb2.width,
>> +				.crtc_h = fb2.height,
>> +				.src_w = IGT_FIXED(fb2.width, 0),
>> +				.src_h = IGT_FIXED(fb2.height, 0),
>> +			};
>> +
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_SETPLANE, &setplane));
>> +			break;
>> +		}
>> +		case test_pageflip: {
>> +			struct drm_mode_crtc_page_flip pageflip = {
>> +				.crtc_id = plane->pipe->crtc_id,
>> +				.fb_id = fb2.fb_id,
>> +				.flags = DRM_MODE_PAGE_FLIP_EVENT,
>> +			};
>> +
>> +			do_or_die(igt_ioctl(display->drm_fd, DRM_IOCTL_MODE_PAGE_FLIP, &pageflip));
>> +
>> +			drmHandleEvent(display->drm_fd, &drm_events);
>> +			break;
>> +		}
>> +		}
> Especially since it makes it look like you double-close the same block
> here (but it's actually the case + switch you close). Please remove those
> {} case blocks.
It's required for declaring the local variables. I can increase
the indent of case by 1, which should make the apparent double close disappear. :)
> Otherwise lgtm. The time-based blocking isn't the most perfect testing
> technique, but well, replacing all of libdrm's atomic stuff is a bit over
> the top.
>
> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Thanks for review.

~Maarten

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