summaryrefslogtreecommitdiff
path: root/tests/kms_ccs.c
blob: e1ee58801ac3f009db4fcdab94b1c71d37911fe9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
/*
 * 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"

IGT_TEST_DESCRIPTION("Test render compression (RC), in which the main surface "
		     "is complemented by a color control surface (CCS) that "
		     "the display uses to interpret the compressed data.");

enum test_flags {
	TEST_CRC			= 1 << 1,
	TEST_ROTATE_180			= 1 << 2,
	TEST_BAD_PIXEL_FORMAT		= 1 << 3,
	TEST_BAD_ROTATION_90		= 1 << 4,
	TEST_NO_AUX_BUFFER		= 1 << 5,
	TEST_BAD_CCS_HANDLE		= 1 << 6,
	TEST_BAD_AUX_STRIDE		= 1 << 7,
};

#define TEST_FAIL_ON_ADDFB2 \
	(TEST_BAD_PIXEL_FORMAT | TEST_NO_AUX_BUFFER | TEST_BAD_CCS_HANDLE | \
	 TEST_BAD_AUX_STRIDE)

enum test_fb_flags {
	FB_COMPRESSED			= 1 << 0,
	FB_HAS_PLANE			= 1 << 1,
	FB_MISALIGN_AUX_STRIDE		= 1 << 2,
	FB_SMALL_AUX_STRIDE		= 1 << 3,
	FB_ZERO_AUX_STRIDE		= 1 << 4,
};

typedef struct {
	int drm_fd;
	igt_display_t display;
	igt_output_t *output;
	enum pipe pipe;
	enum test_flags flags;
	igt_plane_t *plane;
	igt_pipe_crc_t *pipe_crc;
} data_t;

#define RED			0x00ff0000
#define COMPRESSED_RED		0x0ff0000f
#define GREEN			0x0000ff00
#define COMPRESSED_GREEN	0x000ff00f

#define CCS_UNCOMPRESSED	0x0
#define CCS_COMPRESSED		0x55

struct local_drm_format_modifier {
       /* Bitmask of formats in get_plane format list this info applies to. The
	* offset allows a sliding window of which 64 formats (bits).
	*
	* Some examples:
	* In today's world with < 65 formats, and formats 0, and 2 are
	* supported
	* 0x0000000000000005
	*		  ^-offset = 0, formats = 5
	*
	* If the number formats grew to 128, and formats 98-102 are
	* supported with the modifier:
	*
	* 0x0000003c00000000 0000000000000000
	*		  ^
	*		  |__offset = 64, formats = 0x3c00000000
	*
	*/
       uint64_t formats;
       uint32_t offset;
       uint32_t pad;

       /* This modifier can be used with the format for this plane. */
       uint64_t modifier;
};

struct local_drm_format_modifier_blob {
#define LOCAL_FORMAT_BLOB_CURRENT 1
	/* Version of this blob format */
	uint32_t version;

	/* Flags */
	uint32_t flags;

	/* Number of fourcc formats supported */
	uint32_t count_formats;

	/* Where in this blob the formats exist (in bytes) */
	uint32_t formats_offset;

	/* Number of drm_format_modifiers */
	uint32_t count_modifiers;

	/* Where in this blob the modifiers exist (in bytes) */
	uint32_t modifiers_offset;

	/* u32 formats[] */
	/* struct drm_format_modifier modifiers[] */
};

static inline uint32_t *
formats_ptr(struct local_drm_format_modifier_blob *blob)
{
	return (uint32_t *)(((char *)blob) + blob->formats_offset);
}

static inline struct local_drm_format_modifier *
modifiers_ptr(struct local_drm_format_modifier_blob *blob)
{
	return (struct local_drm_format_modifier *)(((char *)blob) + blob->modifiers_offset);
}

static bool plane_has_format_with_ccs(data_t *data, igt_plane_t *plane, uint32_t format)
{
	drmModePropertyBlobPtr blob;
	struct local_drm_format_modifier_blob *blob_data;
	struct local_drm_format_modifier *modifiers, *last_mod;
	uint32_t *formats, *last_fmt;
	uint64_t blob_id;
	bool ret;
	int fmt_idx = -1;

	ret = kmstest_get_property(data->drm_fd, plane->drm_plane->plane_id,
				   DRM_MODE_OBJECT_PLANE, "IN_FORMATS",
				   NULL, &blob_id, NULL);
	igt_skip_on_f(ret == false, "IN_FORMATS not supported by kernel\n");
	igt_skip_on_f(blob_id == 0, "IN_FORMATS not supported by plane\n");
	blob = drmModeGetPropertyBlob(data->drm_fd, blob_id);
	igt_assert(blob);
	igt_assert_lte(sizeof(struct local_drm_format_modifier_blob),
		       blob->length);

	blob_data = (struct local_drm_format_modifier_blob *) blob->data;
	formats = formats_ptr(blob_data);
	last_fmt = &formats[blob_data->count_formats];
	igt_assert_lte(((char *) last_fmt - (char *) blob_data), blob->length);
	for (int i = 0; i < blob_data->count_formats; i++) {
		if (formats[i] == format) {
			fmt_idx = i;
			break;
		}
	}

	if (fmt_idx == -1)
		return false;

	modifiers = modifiers_ptr(blob_data);
	last_mod = &modifiers[blob_data->count_modifiers];
	igt_assert_lte(((char *) last_mod - (char *) blob_data), blob->length);
	for (int i = 0; i < blob_data->count_modifiers; i++) {
		if (modifiers[i].modifier != LOCAL_I915_FORMAT_MOD_Y_TILED_CCS)
			continue;

		if (modifiers[i].offset > fmt_idx ||
		    fmt_idx > modifiers[i].offset + 63)
			continue;

		if (modifiers[i].formats &
		    (1UL << (fmt_idx - modifiers[i].offset)))
			return true;
	}

	return false;
}

static void render_fb(data_t *data, uint32_t gem_handle, unsigned int size,
		      enum test_fb_flags fb_flags,
		      int height, unsigned int stride)
{
	uint32_t *ptr;
	unsigned int half_height, half_size;
	uint32_t uncompressed_color = data->plane ? GREEN : RED;
	uint32_t compressed_color =
		data->plane ? COMPRESSED_GREEN : COMPRESSED_RED;
	uint32_t bad_color = RED;
	int i;

	ptr = gem_mmap__cpu(data->drm_fd, gem_handle, 0, size,
			    PROT_READ | PROT_WRITE);

	if (fb_flags & FB_COMPRESSED) {
		/* In the compressed case, we want the top half of the
		 * surface to be uncompressed and the bottom half to be
		 * compressed.
		 *
		 * We need to cut the surface on a CCS cache-line boundary,
		 * otherwise, we're going to be in trouble when we try to
		 * generate CCS data for the surface.  A cache line in the
		 * CCS is 16x16 cache-line-pairs in the main surface.  16
		 * cache lines is 64 rows high.
		 */
		half_height = ALIGN(height, 128) / 2;
		half_size = half_height * stride;
		for (i = 0; i < size / 4; i++) {
			if (i < half_size / 4)
				ptr[i] = uncompressed_color;
			else
				ptr[i] = compressed_color;
		}
	} else {
		/* When we're displaying the primary plane underneath a
		 * sprite plane, cut out a 128 x 128 area (less than the sprite)
		 * plane size which we paint red, so we know easily if it's
		 * bad.
		 */
		for (i = 0; i < size / 4; i++) {
			if ((fb_flags & FB_HAS_PLANE) &&
			    (i / (stride / 4)) < 128 &&
			    (i % (stride / 4)) < 128) {
				ptr[i] = bad_color;
			} else {
				ptr[i] = uncompressed_color;
			}
		}
	}

	munmap(ptr, size);
}

static unsigned int
y_tile_y_pos(unsigned int offset, unsigned int stride)
{
	unsigned int y_tiles, y;
	y_tiles = (offset / 4096) / (stride / 128);
	y = y_tiles * 32 + ((offset & 0x1f0) >> 4);
	return y;
}

static void render_ccs(data_t *data, uint32_t gem_handle,
		       uint32_t offset, uint32_t size,
		       int height, unsigned int ccs_stride)
{
	unsigned int half_height, ccs_half_height;
	uint8_t *ptr;
	int i;

	half_height = ALIGN(height, 128) / 2;
	ccs_half_height = half_height / 16;

	ptr = gem_mmap__cpu(data->drm_fd, gem_handle, offset, size,
			    PROT_READ | PROT_WRITE);

	for (i = 0; i < size; i++) {
		if (y_tile_y_pos(i, ccs_stride) < ccs_half_height)
			ptr[i] = CCS_UNCOMPRESSED;
		else
			ptr[i] = CCS_COMPRESSED;
	}

	munmap(ptr, size);
}

static void generate_fb(data_t *data, struct igt_fb *fb,
			int width, int height,
			enum test_fb_flags fb_flags)
{
	struct local_drm_mode_fb_cmd2 f = {};
	unsigned int size[2];
	uint64_t modifier;
	int ret;
	uint32_t ccs_handle;

	memset(fb, 0, sizeof(*fb));

	/* Use either compressed or Y-tiled to test. However, given the lack of
	 * available bandwidth, we use linear for the primary plane when
	 * testing sprites, since we cannot fit two CCS planes into the
	 * available FIFO configurations.
	 */
	if (fb_flags & FB_COMPRESSED)
		modifier = LOCAL_I915_FORMAT_MOD_Y_TILED_CCS;
	else if (!(fb_flags & FB_HAS_PLANE))
		modifier = LOCAL_I915_FORMAT_MOD_Y_TILED;
	else
		modifier = 0;

	f.flags = LOCAL_DRM_MODE_FB_MODIFIERS;
	f.width = width;
	f.height = height;

	if (data->flags & TEST_BAD_PIXEL_FORMAT)
		f.pixel_format = DRM_FORMAT_RGB565;
	else
		f.pixel_format = DRM_FORMAT_XRGB8888;

	f.pitches[0] = ALIGN(width * 4, 128);
	f.modifier[0] = modifier;
	f.offsets[0] = 0;
	size[0] = f.pitches[0] * ALIGN(height, 32);

	if (fb_flags & FB_COMPRESSED) {
		/* From the Sky Lake PRM, Vol 12, "Color Control Surface":
		 *
		 *    "The compression state of the cache-line pair is
		 *    specified by 2 bits in the CCS.  Each CCS cache-line
		 *    represents an area on the main surface of 16x16 sets
		 *    of 128 byte Y-tiled cache-line-pairs. CCS is always Y
		 *    tiled."
		 *
		 * A "cache-line-pair" for a Y-tiled surface is two
		 * horizontally adjacent cache lines.  When operating in
		 * bytes and rows, this gives us a scale-down factor of
		 * 32x16.  Since the main surface has a 32-bit format, we
		 * need to multiply width by 4 to get bytes.
		 */
		int ccs_width = ALIGN(width * 4, 32) / 32;
		int ccs_height = ALIGN(height, 16) / 16;
		int ccs_pitches = ALIGN(ccs_width * 1, 128);
		int ccs_offsets = size[0];

		if (fb_flags & FB_MISALIGN_AUX_STRIDE) {
			igt_skip_on_f(width <= 1024,
				      "FB already has the smallest possible stride\n");
			ccs_pitches -= 64;
		}
		else if (fb_flags & FB_SMALL_AUX_STRIDE) {
			igt_skip_on_f(width <= 1024,
				      "FB already has the smallest possible stride\n");
			ccs_pitches = ALIGN(ccs_width/2, 128);
		}

		size[1] = ccs_pitches * ALIGN(ccs_height, 32);

		f.handles[0] = gem_create(data->drm_fd, size[0] + size[1]);
		if (data->flags & TEST_BAD_CCS_HANDLE) {
			/* Put the CCS buffer on a different BO. */
			ccs_handle = gem_create(data->drm_fd, size[0] + size[1]);
		} else
			ccs_handle = f.handles[0];

		if (!(data->flags & TEST_NO_AUX_BUFFER)) {
			f.modifier[1] = modifier;
			f.handles[1] = ccs_handle;
			f.offsets[1] = ccs_offsets;
			f.pitches[1] = (fb_flags & FB_ZERO_AUX_STRIDE)? 0:ccs_pitches;

			render_ccs(data, f.handles[1], f.offsets[1], size[1],
				   height, ccs_pitches);
		}
	} else {
		f.handles[0] = gem_create(data->drm_fd, size[0]);
	}

	render_fb(data, f.handles[0], size[0], fb_flags, height, f.pitches[0]);

	ret = drmIoctl(data->drm_fd, LOCAL_DRM_IOCTL_MODE_ADDFB2, &f);
	if (data->flags & TEST_FAIL_ON_ADDFB2) {
		igt_assert_eq(ret, -1);
		igt_assert_eq(errno, EINVAL);
		return;
	} else
		igt_assert_eq(ret, 0);

	fb->fb_id = f.fb_id;
	fb->fd = data->drm_fd;
	fb->gem_handle = f.handles[0];
	fb->is_dumb = false;
	fb->drm_format = f.pixel_format;
	fb->width = f.width;
	fb->height = f.height;
	fb->stride = f.pitches[0];
	fb->tiling = f.modifier[0];
	fb->size = size[0];
	fb->cairo_surface = NULL;
	fb->domain = 0;
}

static bool try_config(data_t *data, enum test_fb_flags fb_flags,
		       igt_crc_t *crc)
{
	igt_display_t *display = &data->display;
	igt_plane_t *primary;
	drmModeModeInfo *drm_mode = igt_output_get_mode(data->output);
	enum igt_commit_style commit;
	struct igt_fb fb, fb_sprite;
	int ret;

	if (data->display.is_atomic)
		commit = COMMIT_ATOMIC;
	else
		commit = COMMIT_UNIVERSAL;

	primary = igt_output_get_plane_type(data->output,
					    DRM_PLANE_TYPE_PRIMARY);
	if (!plane_has_format_with_ccs(data, primary, DRM_FORMAT_XRGB8888))
		return false;

	if (data->plane && fb_flags & FB_COMPRESSED) {
		if (!plane_has_format_with_ccs(data, data->plane, DRM_FORMAT_XRGB8888))
			return false;
		generate_fb(data, &fb, drm_mode->hdisplay,
			    drm_mode->vdisplay,
			    (fb_flags & ~FB_COMPRESSED) | FB_HAS_PLANE);
		generate_fb(data, &fb_sprite, 256, 256, fb_flags);
	} else {
		generate_fb(data, &fb, drm_mode->hdisplay,
			    drm_mode->vdisplay, fb_flags);
	}

	if (data->flags & TEST_FAIL_ON_ADDFB2)
		return true;

	igt_plane_set_position(primary, 0, 0);
	igt_plane_set_size(primary, drm_mode->hdisplay, drm_mode->vdisplay);
	igt_plane_set_fb(primary, &fb);

	if (data->plane && fb_flags & FB_COMPRESSED) {
		igt_plane_set_position(data->plane, 0, 0);
		igt_plane_set_size(data->plane, 256, 256);
		igt_plane_set_fb(data->plane, &fb_sprite);
	}

	if (data->flags & TEST_ROTATE_180)
		igt_plane_set_rotation(primary, IGT_ROTATION_180);
	if (data->flags & TEST_BAD_ROTATION_90)
		igt_plane_set_rotation(primary, IGT_ROTATION_90);

	ret = igt_display_try_commit2(display, commit);
	if (data->flags & TEST_BAD_ROTATION_90) {
		igt_assert_eq(ret, -EINVAL);
	} else {
		igt_assert_eq(ret, 0);

		if (crc)
			igt_pipe_crc_collect_crc(data->pipe_crc, crc);
	}

	igt_debug_wait_for_keypress("ccs");

	if (data->plane && fb_flags & FB_COMPRESSED) {
		igt_plane_set_position(data->plane, 0, 0);
		igt_plane_set_size(data->plane, 0, 0);
		igt_plane_set_fb(data->plane, NULL);
		igt_remove_fb(display->drm_fd, &fb_sprite);
	}

	igt_plane_set_fb(primary, NULL);
	igt_plane_set_rotation(primary, IGT_ROTATION_0);
	igt_display_commit2(display, commit);

	if (data->flags & TEST_CRC)
		igt_remove_fb(data->drm_fd, &fb);

	return true;
}

static int test_output(data_t *data)
{
	igt_display_t *display = &data->display;
	igt_crc_t crc, ref_crc;
	enum test_fb_flags fb_flags = 0;
	int valid_tests = 0;

	igt_display_require_output_on_pipe(display, data->pipe);

	/* Sets data->output with a valid output. */
	for_each_valid_output_on_pipe(display, data->pipe, data->output) {
		break;
	}

	igt_output_set_pipe(data->output, data->pipe);

	if (data->flags & TEST_CRC) {
		data->pipe_crc = igt_pipe_crc_new(data->drm_fd, data->pipe, INTEL_PIPE_CRC_SOURCE_AUTO);

		if (try_config(data, fb_flags | FB_COMPRESSED, &ref_crc) &&
		    try_config(data, fb_flags, &crc)) {
			igt_assert_crc_equal(&crc, &ref_crc);
			valid_tests++;
		}

		igt_pipe_crc_free(data->pipe_crc);
		data->pipe_crc = NULL;
	}

	if (data->flags & TEST_BAD_PIXEL_FORMAT ||
	    data->flags & TEST_BAD_ROTATION_90 ||
	    data->flags & TEST_NO_AUX_BUFFER ||
	    data->flags & TEST_BAD_CCS_HANDLE) {
		valid_tests += try_config(data, fb_flags | FB_COMPRESSED, NULL);
	}

	if (data->flags & TEST_BAD_AUX_STRIDE) {
		valid_tests += try_config(data, fb_flags | FB_COMPRESSED | FB_MISALIGN_AUX_STRIDE , NULL);
		valid_tests += try_config(data, fb_flags | FB_COMPRESSED | FB_SMALL_AUX_STRIDE , NULL);
		valid_tests += try_config(data, fb_flags | FB_COMPRESSED | FB_ZERO_AUX_STRIDE , NULL);
	}

	igt_output_set_pipe(data->output, PIPE_ANY);
	igt_display_commit2(display, display->is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);

	return valid_tests;
}

static data_t data;

igt_main
{
	enum pipe pipe;

	igt_fixture {
		data.drm_fd = drm_open_driver_master(DRIVER_INTEL);

		igt_require(intel_gen(intel_get_drm_devid(data.drm_fd)) >= 9);
		kmstest_set_vt_graphics_mode();
		igt_require_pipe_crc(data.drm_fd);

		igt_display_init(&data.display, data.drm_fd);
	}

	for_each_pipe_static(pipe) {
		const char *pipe_name = kmstest_pipe_name(pipe);

		data.pipe = pipe;

		data.flags = TEST_BAD_PIXEL_FORMAT;
		igt_subtest_f("pipe-%s-bad-pixel-format", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_BAD_ROTATION_90;
		igt_subtest_f("pipe-%s-bad-rotation-90", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_CRC;
		igt_subtest_f("pipe-%s-crc-primary-basic", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_CRC | TEST_ROTATE_180;
		igt_subtest_f("pipe-%s-crc-primary-rotation-180", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_CRC;
		igt_subtest_f("pipe-%s-crc-sprite-planes-basic", pipe_name) {
			int valid_tests = 0;

			igt_display_require_output_on_pipe(&data.display, data.pipe);

			for_each_plane_on_pipe(&data.display, data.pipe, data.plane) {
				if (data.plane->type == DRM_PLANE_TYPE_PRIMARY)
					continue;
				valid_tests += test_output(&data);
			}

			igt_require(valid_tests);
		}

		data.plane = NULL;

		data.flags = TEST_NO_AUX_BUFFER;
		igt_subtest_f("pipe-%s-missing-ccs-buffer", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_BAD_CCS_HANDLE;
		igt_subtest_f("pipe-%s-ccs-on-another-bo", pipe_name)
			igt_require(test_output(&data));

		data.flags = TEST_BAD_AUX_STRIDE;
		igt_subtest_f("pipe-%s-bad-aux-stride", pipe_name)
			igt_require(test_output(&data));
	}

	igt_fixture
		igt_display_fini(&data.display);
}