2 * Copyright 2014 The Chromium OS Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
15 #include <xf86drmMode.h>
21 static uint32_t subsample_stride(uint32_t stride, uint32_t format, size_t plane)
26 case DRM_FORMAT_YVU420:
27 case DRM_FORMAT_YVU420_ANDROID:
28 stride = DIV_ROUND_UP(stride, 2);
36 static uint32_t bpp_from_format(uint32_t format, size_t plane)
38 assert(plane < drv_num_planes_from_format(format));
41 case DRM_FORMAT_BGR233:
44 case DRM_FORMAT_RGB332:
45 case DRM_FORMAT_YVU420:
46 case DRM_FORMAT_YVU420_ANDROID:
51 return (plane == 0) ? 8 : 4;
53 case DRM_FORMAT_ABGR1555:
54 case DRM_FORMAT_ABGR4444:
55 case DRM_FORMAT_ARGB1555:
56 case DRM_FORMAT_ARGB4444:
57 case DRM_FORMAT_BGR565:
58 case DRM_FORMAT_BGRA4444:
59 case DRM_FORMAT_BGRA5551:
60 case DRM_FORMAT_BGRX4444:
61 case DRM_FORMAT_BGRX5551:
64 case DRM_FORMAT_RGB565:
65 case DRM_FORMAT_RGBA4444:
66 case DRM_FORMAT_RGBA5551:
67 case DRM_FORMAT_RGBX4444:
68 case DRM_FORMAT_RGBX5551:
71 case DRM_FORMAT_XBGR1555:
72 case DRM_FORMAT_XBGR4444:
73 case DRM_FORMAT_XRGB1555:
74 case DRM_FORMAT_XRGB4444:
79 case DRM_FORMAT_BGR888:
80 case DRM_FORMAT_RGB888:
83 case DRM_FORMAT_ABGR2101010:
84 case DRM_FORMAT_ABGR8888:
85 case DRM_FORMAT_ARGB2101010:
86 case DRM_FORMAT_ARGB8888:
88 case DRM_FORMAT_BGRA1010102:
89 case DRM_FORMAT_BGRA8888:
90 case DRM_FORMAT_BGRX1010102:
91 case DRM_FORMAT_BGRX8888:
92 case DRM_FORMAT_RGBA1010102:
93 case DRM_FORMAT_RGBA8888:
94 case DRM_FORMAT_RGBX1010102:
95 case DRM_FORMAT_RGBX8888:
96 case DRM_FORMAT_XBGR2101010:
97 case DRM_FORMAT_XBGR8888:
98 case DRM_FORMAT_XRGB2101010:
99 case DRM_FORMAT_XRGB8888:
103 fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
107 uint32_t drv_bo_get_stride_in_pixels(struct bo *bo)
109 uint32_t bytes_per_pixel = DIV_ROUND_UP(bpp_from_format(bo->format, 0), 8);
110 return DIV_ROUND_UP(bo->strides[0], bytes_per_pixel);
114 * This function returns the stride for a given format, width and plane.
116 uint32_t drv_stride_from_format(uint32_t format, uint32_t width, size_t plane)
118 uint32_t stride = DIV_ROUND_UP(width * bpp_from_format(format, plane), 8);
121 * The stride of Android YV12 buffers is required to be aligned to 16 bytes
122 * (see <system/graphics.h>).
124 if (format == DRM_FORMAT_YVU420_ANDROID)
125 stride = (plane == 0) ? ALIGN(stride, 32) : ALIGN(stride, 16);
131 * This function fills in the buffer object given the driver aligned stride of
132 * the first plane, height and a format. This function assumes there is just
133 * one kernel buffer per buffer object.
135 int drv_bo_from_format(struct bo *bo, uint32_t stride, uint32_t aligned_height, uint32_t format)
138 size_t p, num_planes;
141 num_planes = drv_num_planes_from_format(format);
145 for (p = 0; p < num_planes; p++) {
146 bo->strides[p] = subsample_stride(stride, format, p);
147 bo->sizes[p] = drv_size_from_format(format, bo->strides[p], bo->height, p);
148 bo->offsets[p] = offset;
149 offset += bo->sizes[p];
150 bo->total_size += drv_size_from_format(format, bo->strides[p], aligned_height, p);
156 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
161 uint32_t aligned_width, aligned_height;
162 struct drm_mode_create_dumb create_dumb;
164 aligned_width = width;
165 aligned_height = height;
166 if (format == DRM_FORMAT_YVU420_ANDROID) {
168 * Align width to 32 pixels, so chroma strides are 16 bytes as
171 aligned_width = ALIGN(width, 32);
172 aligned_height = 3 * DIV_ROUND_UP(height, 2);
175 memset(&create_dumb, 0, sizeof(create_dumb));
176 create_dumb.height = aligned_height;
177 create_dumb.width = aligned_width;
178 create_dumb.bpp = bpp_from_format(format, 0);
179 create_dumb.flags = 0;
181 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
183 fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
187 drv_bo_from_format(bo, create_dumb.pitch, height, format);
189 for (plane = 0; plane < bo->num_planes; plane++)
190 bo->handles[plane].u32 = create_dumb.handle;
192 bo->total_size = create_dumb.size;
196 int drv_dumb_bo_destroy(struct bo *bo)
198 struct drm_mode_destroy_dumb destroy_dumb;
201 memset(&destroy_dumb, 0, sizeof(destroy_dumb));
202 destroy_dumb.handle = bo->handles[0].u32;
204 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
206 fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed (handle=%x)\n",
214 int drv_gem_bo_destroy(struct bo *bo)
216 struct drm_gem_close gem_close;
220 for (plane = 0; plane < bo->num_planes; plane++) {
221 for (i = 0; i < plane; i++)
222 if (bo->handles[i].u32 == bo->handles[plane].u32)
224 /* Make sure close hasn't already been called on this handle */
228 memset(&gem_close, 0, sizeof(gem_close));
229 gem_close.handle = bo->handles[plane].u32;
231 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
233 fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed (handle=%x) error %d\n",
234 bo->handles[plane].u32, ret);
242 int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data)
246 struct drm_prime_handle prime_handle;
248 for (plane = 0; plane < bo->num_planes; plane++) {
249 memset(&prime_handle, 0, sizeof(prime_handle));
250 prime_handle.fd = data->fds[plane];
252 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
255 fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed (fd=%u)\n",
259 * Need to call GEM close on planes that were opened,
260 * if any. Adjust the num_planes variable to be the
261 * plane that failed, so GEM close will be called on
262 * planes before that plane.
264 bo->num_planes = plane;
265 drv_gem_bo_destroy(bo);
269 bo->handles[plane].u32 = prime_handle.handle;
272 for (plane = 0; plane < bo->num_planes; plane++) {
273 pthread_mutex_lock(&bo->drv->driver_lock);
274 drv_increment_reference_count(bo->drv, bo, plane);
275 pthread_mutex_unlock(&bo->drv->driver_lock);
281 void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane)
285 struct drm_mode_map_dumb map_dumb;
287 memset(&map_dumb, 0, sizeof(map_dumb));
288 map_dumb.handle = bo->handles[plane].u32;
290 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
292 fprintf(stderr, "drv: DRM_IOCTL_MODE_MAP_DUMB failed \n");
296 for (i = 0; i < bo->num_planes; i++)
297 if (bo->handles[i].u32 == bo->handles[plane].u32)
298 data->length += bo->sizes[i];
300 return mmap(0, data->length, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
304 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane)
309 if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
310 num = (uintptr_t)(count);
315 void drv_increment_reference_count(struct driver *drv, struct bo *bo, size_t plane)
317 uintptr_t num = drv_get_reference_count(drv, bo, plane);
319 /* If a value isn't in the table, drmHashDelete is a no-op */
320 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
321 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num + 1));
324 void drv_decrement_reference_count(struct driver *drv, struct bo *bo, size_t plane)
326 uintptr_t num = drv_get_reference_count(drv, bo, plane);
328 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
331 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num - 1));
334 uint32_t drv_log_base2(uint32_t value)
344 int drv_add_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
347 struct combinations *combos = &drv->backend->combos;
348 if (combos->size >= combos->allocations) {
349 struct combination *new_data;
350 combos->allocations *= 2;
351 new_data = realloc(combos->data, combos->allocations * sizeof(*combos->data));
355 combos->data = new_data;
358 combos->data[combos->size].format = format;
359 combos->data[combos->size].metadata.priority = metadata->priority;
360 combos->data[combos->size].metadata.tiling = metadata->tiling;
361 combos->data[combos->size].metadata.modifier = metadata->modifier;
362 combos->data[combos->size].usage = usage;
367 int drv_add_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats,
368 struct format_metadata *metadata, uint64_t usage)
372 for (i = 0; i < num_formats; i++) {
373 ret = drv_add_combination(drv, formats[i], metadata, usage);
381 void drv_modify_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
385 struct combination *combo;
386 /* Attempts to add the specified usage to an existing combination. */
387 for (i = 0; i < drv->backend->combos.size; i++) {
388 combo = &drv->backend->combos.data[i];
389 if (combo->format == format && combo->metadata.tiling == metadata->tiling &&
390 combo->metadata.modifier == metadata->modifier)
391 combo->usage |= usage;
395 struct kms_item *drv_query_kms(struct driver *drv, uint32_t *num_items)
397 uint64_t flag, usage;
398 struct kms_item *items;
399 uint32_t i, j, k, allocations, item_size;
401 drmModePlanePtr plane;
402 drmModePropertyPtr prop;
403 drmModePlaneResPtr resources;
404 drmModeObjectPropertiesPtr props;
406 /* Start with a power of 2 number of allocations. */
409 items = calloc(allocations, sizeof(*items));
414 * The ability to return universal planes is only complete on
415 * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl
416 * therefore might return an error code, so don't check it. If it
417 * fails, it'll just return the plane list as overlay planes, which is
418 * fine in our case (our drivers already have cursor bits set).
419 * modetest in libdrm does the same thing.
421 drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
423 resources = drmModeGetPlaneResources(drv->fd);
427 for (i = 0; i < resources->count_planes; i++) {
428 plane = drmModeGetPlane(drv->fd, resources->planes[i]);
432 props = drmModeObjectGetProperties(drv->fd, plane->plane_id, DRM_MODE_OBJECT_PLANE);
436 for (j = 0; j < props->count_props; j++) {
437 prop = drmModeGetProperty(drv->fd, props->props[j]);
439 if (strcmp(prop->name, "type") == 0) {
440 flag = props->prop_values[j];
443 drmModeFreeProperty(prop);
448 case DRM_PLANE_TYPE_OVERLAY:
449 case DRM_PLANE_TYPE_PRIMARY:
450 usage = BO_USE_SCANOUT;
452 case DRM_PLANE_TYPE_CURSOR:
453 usage = BO_USE_CURSOR;
459 for (j = 0; j < plane->count_formats; j++) {
461 for (k = 0; k < item_size; k++) {
462 if (items[k].format == plane->formats[j] &&
463 items[k].modifier == DRM_FORMAT_MOD_NONE) {
464 items[k].usage |= usage;
470 if (!found && item_size >= allocations) {
471 struct kms_item *new_data = NULL;
473 new_data = realloc(items, allocations * sizeof(*items));
483 items[item_size].format = plane->formats[j];
484 items[item_size].modifier = DRM_FORMAT_MOD_NONE;
485 items[item_size].usage = usage;
490 drmModeFreeObjectProperties(props);
491 drmModeFreePlane(plane);
494 drmModeFreePlaneResources(resources);
496 if (items && item_size == 0) {
501 *num_items = item_size;
505 int drv_modify_linear_combinations(struct driver *drv)
507 uint32_t i, j, num_items;
508 struct kms_item *items;
509 struct combination *combo;
512 * All current drivers can scanout linear XRGB8888/ARGB8888 as a primary
513 * plane and as a cursor. Some drivers don't support
514 * drmModeGetPlaneResources, so add the combination here. Note that the
515 * kernel disregards the alpha component of ARGB unless it's an overlay
518 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &LINEAR_METADATA,
519 BO_USE_CURSOR | BO_USE_SCANOUT);
520 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &LINEAR_METADATA,
521 BO_USE_CURSOR | BO_USE_SCANOUT);
523 items = drv_query_kms(drv, &num_items);
524 if (!items || !num_items)
527 for (i = 0; i < num_items; i++) {
528 for (j = 0; j < drv->backend->combos.size; j++) {
529 combo = &drv->backend->combos.data[j];
530 if (items[i].format == combo->format)
531 combo->usage |= BO_USE_SCANOUT;