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 * HAL_PIXEL_FORMAT_YV12 requires that (see <system/graphics.h>):
146 * - the aligned height is same as the buffer's height.
147 * - the chroma stride is 16 bytes aligned, i.e., the luma's strides
148 * is 32 bytes aligned.
150 if (bo->format == DRM_FORMAT_YVU420_ANDROID) {
151 assert(aligned_height == bo->height);
152 assert(stride == ALIGN(stride, 32));
155 for (p = 0; p < num_planes; p++) {
156 bo->strides[p] = subsample_stride(stride, format, p);
157 bo->sizes[p] = drv_size_from_format(format, bo->strides[p], aligned_height, p);
158 bo->offsets[p] = offset;
159 offset += bo->sizes[p];
162 bo->total_size = offset;
166 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
171 uint32_t aligned_width, aligned_height;
172 struct drm_mode_create_dumb create_dumb;
174 aligned_width = width;
175 aligned_height = height;
176 if (format == DRM_FORMAT_YVU420_ANDROID) {
178 * Align width to 32 pixels, so chroma strides are 16 bytes as
181 aligned_width = ALIGN(width, 32);
184 if (format == DRM_FORMAT_YVU420_ANDROID || format == DRM_FORMAT_YVU420) {
185 aligned_height = 3 * DIV_ROUND_UP(height, 2);
188 memset(&create_dumb, 0, sizeof(create_dumb));
189 create_dumb.height = aligned_height;
190 create_dumb.width = aligned_width;
191 create_dumb.bpp = bpp_from_format(format, 0);
192 create_dumb.flags = 0;
194 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
196 fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
200 drv_bo_from_format(bo, create_dumb.pitch, height, format);
202 for (plane = 0; plane < bo->num_planes; plane++)
203 bo->handles[plane].u32 = create_dumb.handle;
205 bo->total_size = create_dumb.size;
209 int drv_dumb_bo_destroy(struct bo *bo)
211 struct drm_mode_destroy_dumb destroy_dumb;
214 memset(&destroy_dumb, 0, sizeof(destroy_dumb));
215 destroy_dumb.handle = bo->handles[0].u32;
217 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
219 fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed (handle=%x)\n",
227 int drv_gem_bo_destroy(struct bo *bo)
229 struct drm_gem_close gem_close;
233 for (plane = 0; plane < bo->num_planes; plane++) {
234 for (i = 0; i < plane; i++)
235 if (bo->handles[i].u32 == bo->handles[plane].u32)
237 /* Make sure close hasn't already been called on this handle */
241 memset(&gem_close, 0, sizeof(gem_close));
242 gem_close.handle = bo->handles[plane].u32;
244 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
246 fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed (handle=%x) error %d\n",
247 bo->handles[plane].u32, ret);
255 int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data)
259 struct drm_prime_handle prime_handle;
261 for (plane = 0; plane < bo->num_planes; plane++) {
262 memset(&prime_handle, 0, sizeof(prime_handle));
263 prime_handle.fd = data->fds[plane];
265 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
268 fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed (fd=%u)\n",
272 * Need to call GEM close on planes that were opened,
273 * if any. Adjust the num_planes variable to be the
274 * plane that failed, so GEM close will be called on
275 * planes before that plane.
277 bo->num_planes = plane;
278 drv_gem_bo_destroy(bo);
282 bo->handles[plane].u32 = prime_handle.handle;
285 for (plane = 0; plane < bo->num_planes; plane++) {
286 pthread_mutex_lock(&bo->drv->driver_lock);
287 drv_increment_reference_count(bo->drv, bo, plane);
288 pthread_mutex_unlock(&bo->drv->driver_lock);
294 void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane, int prot)
298 struct drm_mode_map_dumb map_dumb;
300 memset(&map_dumb, 0, sizeof(map_dumb));
301 map_dumb.handle = bo->handles[plane].u32;
303 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
305 fprintf(stderr, "drv: DRM_IOCTL_MODE_MAP_DUMB failed \n");
309 for (i = 0; i < bo->num_planes; i++)
310 if (bo->handles[i].u32 == bo->handles[plane].u32)
311 data->length += bo->sizes[i];
313 return mmap(0, data->length, prot, MAP_SHARED, bo->drv->fd, map_dumb.offset);
316 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane)
321 if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
322 num = (uintptr_t)(count);
327 void drv_increment_reference_count(struct driver *drv, struct bo *bo, size_t plane)
329 uintptr_t num = drv_get_reference_count(drv, bo, plane);
331 /* If a value isn't in the table, drmHashDelete is a no-op */
332 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
333 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num + 1));
336 void drv_decrement_reference_count(struct driver *drv, struct bo *bo, size_t plane)
338 uintptr_t num = drv_get_reference_count(drv, bo, plane);
340 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
343 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num - 1));
346 uint32_t drv_log_base2(uint32_t value)
356 int drv_add_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
359 struct combinations *combos = &drv->backend->combos;
360 if (combos->size >= combos->allocations) {
361 struct combination *new_data;
362 combos->allocations *= 2;
363 new_data = realloc(combos->data, combos->allocations * sizeof(*combos->data));
367 combos->data = new_data;
370 combos->data[combos->size].format = format;
371 combos->data[combos->size].metadata.priority = metadata->priority;
372 combos->data[combos->size].metadata.tiling = metadata->tiling;
373 combos->data[combos->size].metadata.modifier = metadata->modifier;
374 combos->data[combos->size].usage = usage;
379 int drv_add_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats,
380 struct format_metadata *metadata, uint64_t usage)
384 for (i = 0; i < num_formats; i++) {
385 ret = drv_add_combination(drv, formats[i], metadata, usage);
393 void drv_modify_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
397 struct combination *combo;
398 /* Attempts to add the specified usage to an existing combination. */
399 for (i = 0; i < drv->backend->combos.size; i++) {
400 combo = &drv->backend->combos.data[i];
401 if (combo->format == format && combo->metadata.tiling == metadata->tiling &&
402 combo->metadata.modifier == metadata->modifier)
403 combo->usage |= usage;
407 struct kms_item *drv_query_kms(struct driver *drv, uint32_t *num_items)
409 uint64_t flag, usage;
410 struct kms_item *items;
411 uint32_t i, j, k, allocations, item_size;
413 drmModePlanePtr plane;
414 drmModePropertyPtr prop;
415 drmModePlaneResPtr resources;
416 drmModeObjectPropertiesPtr props;
418 /* Start with a power of 2 number of allocations. */
421 items = calloc(allocations, sizeof(*items));
426 * The ability to return universal planes is only complete on
427 * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl
428 * therefore might return an error code, so don't check it. If it
429 * fails, it'll just return the plane list as overlay planes, which is
430 * fine in our case (our drivers already have cursor bits set).
431 * modetest in libdrm does the same thing.
433 drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
435 resources = drmModeGetPlaneResources(drv->fd);
439 for (i = 0; i < resources->count_planes; i++) {
440 plane = drmModeGetPlane(drv->fd, resources->planes[i]);
444 props = drmModeObjectGetProperties(drv->fd, plane->plane_id, DRM_MODE_OBJECT_PLANE);
448 for (j = 0; j < props->count_props; j++) {
449 prop = drmModeGetProperty(drv->fd, props->props[j]);
451 if (strcmp(prop->name, "type") == 0) {
452 flag = props->prop_values[j];
455 drmModeFreeProperty(prop);
460 case DRM_PLANE_TYPE_OVERLAY:
461 case DRM_PLANE_TYPE_PRIMARY:
462 usage = BO_USE_SCANOUT;
464 case DRM_PLANE_TYPE_CURSOR:
465 usage = BO_USE_CURSOR;
471 for (j = 0; j < plane->count_formats; j++) {
473 for (k = 0; k < item_size; k++) {
474 if (items[k].format == plane->formats[j] &&
475 items[k].modifier == DRM_FORMAT_MOD_NONE) {
476 items[k].usage |= usage;
482 if (!found && item_size >= allocations) {
483 struct kms_item *new_data = NULL;
485 new_data = realloc(items, allocations * sizeof(*items));
495 items[item_size].format = plane->formats[j];
496 items[item_size].modifier = DRM_FORMAT_MOD_NONE;
497 items[item_size].usage = usage;
502 drmModeFreeObjectProperties(props);
503 drmModeFreePlane(plane);
506 drmModeFreePlaneResources(resources);
508 if (items && item_size == 0) {
513 *num_items = item_size;
517 int drv_modify_linear_combinations(struct driver *drv)
519 uint32_t i, j, num_items;
520 struct kms_item *items;
521 struct combination *combo;
524 * All current drivers can scanout linear XRGB8888/ARGB8888 as a primary
525 * plane and as a cursor. Some drivers don't support
526 * drmModeGetPlaneResources, so add the combination here. Note that the
527 * kernel disregards the alpha component of ARGB unless it's an overlay
530 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &LINEAR_METADATA,
531 BO_USE_CURSOR | BO_USE_SCANOUT);
532 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &LINEAR_METADATA,
533 BO_USE_CURSOR | BO_USE_SCANOUT);
535 items = drv_query_kms(drv, &num_items);
536 if (!items || !num_items)
539 for (i = 0; i < num_items; i++) {
540 for (j = 0; j < drv->backend->combos.size; j++) {
541 combo = &drv->backend->combos.data[j];
542 if (items[i].format == combo->format)
543 combo->usage |= BO_USE_SCANOUT;