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:
50 return (plane == 0) ? 8 : 4;
52 case DRM_FORMAT_ABGR1555:
53 case DRM_FORMAT_ABGR4444:
54 case DRM_FORMAT_ARGB1555:
55 case DRM_FORMAT_ARGB4444:
56 case DRM_FORMAT_BGR565:
57 case DRM_FORMAT_BGRA4444:
58 case DRM_FORMAT_BGRA5551:
59 case DRM_FORMAT_BGRX4444:
60 case DRM_FORMAT_BGRX5551:
63 case DRM_FORMAT_RGB565:
64 case DRM_FORMAT_RGBA4444:
65 case DRM_FORMAT_RGBA5551:
66 case DRM_FORMAT_RGBX4444:
67 case DRM_FORMAT_RGBX5551:
70 case DRM_FORMAT_XBGR1555:
71 case DRM_FORMAT_XBGR4444:
72 case DRM_FORMAT_XRGB1555:
73 case DRM_FORMAT_XRGB4444:
78 case DRM_FORMAT_BGR888:
79 case DRM_FORMAT_RGB888:
82 case DRM_FORMAT_ABGR2101010:
83 case DRM_FORMAT_ABGR8888:
84 case DRM_FORMAT_ARGB2101010:
85 case DRM_FORMAT_ARGB8888:
87 case DRM_FORMAT_BGRA1010102:
88 case DRM_FORMAT_BGRA8888:
89 case DRM_FORMAT_BGRX1010102:
90 case DRM_FORMAT_BGRX8888:
91 case DRM_FORMAT_RGBA1010102:
92 case DRM_FORMAT_RGBA8888:
93 case DRM_FORMAT_RGBX1010102:
94 case DRM_FORMAT_RGBX8888:
95 case DRM_FORMAT_XBGR2101010:
96 case DRM_FORMAT_XBGR8888:
97 case DRM_FORMAT_XRGB2101010:
98 case DRM_FORMAT_XRGB8888:
102 fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
106 uint32_t drv_bo_get_stride_in_pixels(struct bo *bo)
108 uint32_t bytes_per_pixel = DIV_ROUND_UP(bpp_from_format(bo->format, 0), 8);
109 return DIV_ROUND_UP(bo->strides[0], bytes_per_pixel);
113 * This function returns the stride for a given format, width and plane.
115 uint32_t drv_stride_from_format(uint32_t format, uint32_t width, size_t plane)
117 uint32_t stride = DIV_ROUND_UP(width * bpp_from_format(format, plane), 8);
120 * The stride of Android YV12 buffers is required to be aligned to 16 bytes
121 * (see <system/graphics.h>).
123 if (format == DRM_FORMAT_YVU420_ANDROID)
124 stride = (plane == 0) ? ALIGN(stride, 32) : ALIGN(stride, 16);
130 * This function fills in the buffer object given the driver aligned stride of
131 * the first plane, height and a format. This function assumes there is just
132 * one kernel buffer per buffer object.
134 int drv_bo_from_format(struct bo *bo, uint32_t stride, uint32_t aligned_height, uint32_t format)
137 size_t p, num_planes;
140 num_planes = drv_num_planes_from_format(format);
144 for (p = 0; p < num_planes; p++) {
145 bo->strides[p] = subsample_stride(stride, format, p);
146 bo->sizes[p] = drv_size_from_format(format, bo->strides[p], bo->height, p);
147 bo->offsets[p] = offset;
148 offset += bo->sizes[p];
149 bo->total_size += drv_size_from_format(format, bo->strides[p], aligned_height, p);
155 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
160 uint32_t aligned_width, aligned_height;
161 struct drm_mode_create_dumb create_dumb;
163 aligned_width = width;
164 aligned_height = height;
165 if (format == DRM_FORMAT_YVU420_ANDROID) {
167 * Align width to 32 pixels, so chroma strides are 16 bytes as
170 aligned_width = ALIGN(width, 32);
171 aligned_height = 3 * DIV_ROUND_UP(height, 2);
174 memset(&create_dumb, 0, sizeof(create_dumb));
175 create_dumb.height = aligned_height;
176 create_dumb.width = aligned_width;
177 create_dumb.bpp = bpp_from_format(format, 0);
178 create_dumb.flags = 0;
180 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
182 fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
186 drv_bo_from_format(bo, create_dumb.pitch, height, format);
188 for (plane = 0; plane < bo->num_planes; plane++)
189 bo->handles[plane].u32 = create_dumb.handle;
191 bo->total_size = create_dumb.size;
195 int drv_dumb_bo_destroy(struct bo *bo)
197 struct drm_mode_destroy_dumb destroy_dumb;
200 memset(&destroy_dumb, 0, sizeof(destroy_dumb));
201 destroy_dumb.handle = bo->handles[0].u32;
203 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
205 fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed (handle=%x)\n",
213 int drv_gem_bo_destroy(struct bo *bo)
215 struct drm_gem_close gem_close;
219 for (plane = 0; plane < bo->num_planes; plane++) {
220 for (i = 0; i < plane; i++)
221 if (bo->handles[i].u32 == bo->handles[plane].u32)
223 /* Make sure close hasn't already been called on this handle */
227 memset(&gem_close, 0, sizeof(gem_close));
228 gem_close.handle = bo->handles[plane].u32;
230 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
232 fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed (handle=%x) error %d\n",
233 bo->handles[plane].u32, ret);
241 int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data)
245 struct drm_prime_handle prime_handle;
247 for (plane = 0; plane < bo->num_planes; plane++) {
248 memset(&prime_handle, 0, sizeof(prime_handle));
249 prime_handle.fd = data->fds[plane];
251 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
254 fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed (fd=%u)\n",
258 * Need to call GEM close on planes that were opened,
259 * if any. Adjust the num_planes variable to be the
260 * plane that failed, so GEM close will be called on
261 * planes before that plane.
263 bo->num_planes = plane;
264 drv_gem_bo_destroy(bo);
268 bo->handles[plane].u32 = prime_handle.handle;
271 for (plane = 0; plane < bo->num_planes; plane++) {
272 pthread_mutex_lock(&bo->drv->driver_lock);
273 drv_increment_reference_count(bo->drv, bo, plane);
274 pthread_mutex_unlock(&bo->drv->driver_lock);
280 void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane)
284 struct drm_mode_map_dumb map_dumb;
286 memset(&map_dumb, 0, sizeof(map_dumb));
287 map_dumb.handle = bo->handles[plane].u32;
289 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
291 fprintf(stderr, "drv: DRM_IOCTL_MODE_MAP_DUMB failed \n");
295 for (i = 0; i < bo->num_planes; i++)
296 if (bo->handles[i].u32 == bo->handles[plane].u32)
297 data->length += bo->sizes[i];
299 return mmap(0, data->length, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
303 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane)
308 if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
309 num = (uintptr_t)(count);
314 void drv_increment_reference_count(struct driver *drv, struct bo *bo, size_t plane)
316 uintptr_t num = drv_get_reference_count(drv, bo, plane);
318 /* If a value isn't in the table, drmHashDelete is a no-op */
319 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
320 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num + 1));
323 void drv_decrement_reference_count(struct driver *drv, struct bo *bo, size_t plane)
325 uintptr_t num = drv_get_reference_count(drv, bo, plane);
327 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
330 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num - 1));
333 uint32_t drv_log_base2(uint32_t value)
343 int drv_add_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
346 struct combinations *combos = &drv->backend->combos;
347 if (combos->size >= combos->allocations) {
348 struct combination *new_data;
349 combos->allocations *= 2;
350 new_data = realloc(combos->data, combos->allocations * sizeof(*combos->data));
354 combos->data = new_data;
357 combos->data[combos->size].format = format;
358 combos->data[combos->size].metadata.priority = metadata->priority;
359 combos->data[combos->size].metadata.tiling = metadata->tiling;
360 combos->data[combos->size].metadata.modifier = metadata->modifier;
361 combos->data[combos->size].usage = usage;
366 int drv_add_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats,
367 struct format_metadata *metadata, uint64_t usage)
371 for (i = 0; i < num_formats; i++) {
372 ret = drv_add_combination(drv, formats[i], metadata, usage);
380 void drv_modify_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
384 struct combination *combo;
385 /* Attempts to add the specified usage to an existing combination. */
386 for (i = 0; i < drv->backend->combos.size; i++) {
387 combo = &drv->backend->combos.data[i];
388 if (combo->format == format && combo->metadata.tiling == metadata->tiling &&
389 combo->metadata.modifier == metadata->modifier)
390 combo->usage |= usage;
394 struct kms_item *drv_query_kms(struct driver *drv, uint32_t *num_items)
396 uint64_t flag, usage;
397 struct kms_item *items;
398 uint32_t i, j, k, allocations, item_size;
400 drmModePlanePtr plane;
401 drmModePropertyPtr prop;
402 drmModePlaneResPtr resources;
403 drmModeObjectPropertiesPtr props;
405 /* Start with a power of 2 number of allocations. */
408 items = calloc(allocations, sizeof(*items));
413 * The ability to return universal planes is only complete on
414 * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl
415 * therefore might return an error code, so don't check it. If it
416 * fails, it'll just return the plane list as overlay planes, which is
417 * fine in our case (our drivers already have cursor bits set).
418 * modetest in libdrm does the same thing.
420 drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
422 resources = drmModeGetPlaneResources(drv->fd);
426 for (i = 0; i < resources->count_planes; i++) {
427 plane = drmModeGetPlane(drv->fd, resources->planes[i]);
431 props = drmModeObjectGetProperties(drv->fd, plane->plane_id, DRM_MODE_OBJECT_PLANE);
435 for (j = 0; j < props->count_props; j++) {
436 prop = drmModeGetProperty(drv->fd, props->props[j]);
438 if (strcmp(prop->name, "type") == 0) {
439 flag = props->prop_values[j];
442 drmModeFreeProperty(prop);
447 case DRM_PLANE_TYPE_OVERLAY:
448 case DRM_PLANE_TYPE_PRIMARY:
449 usage = BO_USE_SCANOUT;
451 case DRM_PLANE_TYPE_CURSOR:
452 usage = BO_USE_CURSOR;
458 for (j = 0; j < plane->count_formats; j++) {
460 for (k = 0; k < item_size; k++) {
461 if (items[k].format == plane->formats[j] &&
462 items[k].modifier == DRM_FORMAT_MOD_NONE) {
463 items[k].usage |= usage;
469 if (!found && item_size >= allocations) {
470 struct kms_item *new_data = NULL;
472 new_data = realloc(items, allocations * sizeof(*items));
482 items[item_size].format = plane->formats[j];
483 items[item_size].modifier = DRM_FORMAT_MOD_NONE;
484 items[item_size].usage = usage;
489 drmModeFreeObjectProperties(props);
490 drmModeFreePlane(plane);
493 drmModeFreePlaneResources(resources);
495 if (items && item_size == 0) {
500 *num_items = item_size;
504 int drv_add_linear_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats)
507 uint32_t i, j, num_items;
508 struct kms_item *items;
509 struct combination *combo;
510 struct format_metadata metadata;
513 metadata.priority = 1;
514 metadata.modifier = DRM_FORMAT_MOD_NONE;
516 ret = drv_add_combinations(drv, formats, num_formats, &metadata, BO_COMMON_USE_MASK);
520 * All current drivers can scanout linear XRGB8888/ARGB8888 as a primary
521 * plane and as a cursor. Some drivers don't support
522 * drmModeGetPlaneResources, so add the combination here. Note that the
523 * kernel disregards the alpha component of ARGB unless it's an overlay
526 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
527 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
529 items = drv_query_kms(drv, &num_items);
530 if (!items || !num_items)
533 for (i = 0; i < num_items; i++) {
534 for (j = 0; j < drv->backend->combos.size; j++) {
535 combo = &drv->backend->combos.data[j];
536 if (items[i].format == combo->format)
537 combo->usage |= BO_USE_SCANOUT;