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 struct planar_layout {
23 int horizontal_subsampling[DRV_MAX_PLANES];
24 int vertical_subsampling[DRV_MAX_PLANES];
25 int bytes_per_pixel[DRV_MAX_PLANES];
30 static const struct planar_layout packed_1bpp_layout = {
32 .horizontal_subsampling = { 1 },
33 .vertical_subsampling = { 1 },
34 .bytes_per_pixel = { 1 }
37 static const struct planar_layout packed_2bpp_layout = {
39 .horizontal_subsampling = { 1 },
40 .vertical_subsampling = { 1 },
41 .bytes_per_pixel = { 2 }
44 static const struct planar_layout packed_3bpp_layout = {
46 .horizontal_subsampling = { 1 },
47 .vertical_subsampling = { 1 },
48 .bytes_per_pixel = { 3 }
51 static const struct planar_layout packed_4bpp_layout = {
53 .horizontal_subsampling = { 1 },
54 .vertical_subsampling = { 1 },
55 .bytes_per_pixel = { 4 }
58 static const struct planar_layout biplanar_yuv_420_layout = {
60 .horizontal_subsampling = { 1, 2 },
61 .vertical_subsampling = { 1, 2 },
62 .bytes_per_pixel = { 1, 2 }
65 static const struct planar_layout triplanar_yuv_420_layout = {
67 .horizontal_subsampling = { 1, 2, 2 },
68 .vertical_subsampling = { 1, 2, 2 },
69 .bytes_per_pixel = { 1, 1, 1 }
74 static const struct planar_layout *layout_from_format(uint32_t format)
77 case DRM_FORMAT_BGR233:
80 case DRM_FORMAT_RGB332:
81 return &packed_1bpp_layout;
83 case DRM_FORMAT_YVU420:
84 case DRM_FORMAT_YVU420_ANDROID:
85 return &triplanar_yuv_420_layout;
89 return &biplanar_yuv_420_layout;
91 case DRM_FORMAT_ABGR1555:
92 case DRM_FORMAT_ABGR4444:
93 case DRM_FORMAT_ARGB1555:
94 case DRM_FORMAT_ARGB4444:
95 case DRM_FORMAT_BGR565:
96 case DRM_FORMAT_BGRA4444:
97 case DRM_FORMAT_BGRA5551:
98 case DRM_FORMAT_BGRX4444:
99 case DRM_FORMAT_BGRX5551:
100 case DRM_FORMAT_GR88:
101 case DRM_FORMAT_RG88:
102 case DRM_FORMAT_RGB565:
103 case DRM_FORMAT_RGBA4444:
104 case DRM_FORMAT_RGBA5551:
105 case DRM_FORMAT_RGBX4444:
106 case DRM_FORMAT_RGBX5551:
107 case DRM_FORMAT_UYVY:
108 case DRM_FORMAT_VYUY:
109 case DRM_FORMAT_XBGR1555:
110 case DRM_FORMAT_XBGR4444:
111 case DRM_FORMAT_XRGB1555:
112 case DRM_FORMAT_XRGB4444:
113 case DRM_FORMAT_YUYV:
114 case DRM_FORMAT_YVYU:
115 return &packed_2bpp_layout;
117 case DRM_FORMAT_BGR888:
118 case DRM_FORMAT_RGB888:
119 return &packed_3bpp_layout;
121 case DRM_FORMAT_ABGR2101010:
122 case DRM_FORMAT_ABGR8888:
123 case DRM_FORMAT_ARGB2101010:
124 case DRM_FORMAT_ARGB8888:
125 case DRM_FORMAT_AYUV:
126 case DRM_FORMAT_BGRA1010102:
127 case DRM_FORMAT_BGRA8888:
128 case DRM_FORMAT_BGRX1010102:
129 case DRM_FORMAT_BGRX8888:
130 case DRM_FORMAT_RGBA1010102:
131 case DRM_FORMAT_RGBA8888:
132 case DRM_FORMAT_RGBX1010102:
133 case DRM_FORMAT_RGBX8888:
134 case DRM_FORMAT_XBGR2101010:
135 case DRM_FORMAT_XBGR8888:
136 case DRM_FORMAT_XRGB2101010:
137 case DRM_FORMAT_XRGB8888:
138 return &packed_4bpp_layout;
141 drv_log("UNKNOWN FORMAT %d\n", format);
146 size_t drv_num_planes_from_format(uint32_t format)
148 const struct planar_layout *layout = layout_from_format(format);
151 * drv_bo_new calls this function early to query number of planes and
152 * considers 0 planes to mean unknown format, so we have to support
153 * that. All other layout_from_format() queries can assume that the
154 * format is supported and that the return value is non-NULL.
157 return layout ? layout->num_planes : 0;
160 uint32_t drv_height_from_format(uint32_t format, uint32_t height, size_t plane)
162 const struct planar_layout *layout = layout_from_format(format);
164 assert(plane < layout->num_planes);
166 return DIV_ROUND_UP(height, layout->vertical_subsampling[plane]);
169 uint32_t drv_bytes_per_pixel_from_format(uint32_t format, size_t plane)
171 const struct planar_layout *layout = layout_from_format(format);
173 assert(plane < layout->num_planes);
175 return layout->bytes_per_pixel[plane];
179 * This function returns the stride for a given format, width and plane.
181 uint32_t drv_stride_from_format(uint32_t format, uint32_t width, size_t plane)
183 const struct planar_layout *layout = layout_from_format(format);
184 assert(plane < layout->num_planes);
186 uint32_t plane_width =
187 DIV_ROUND_UP(width, layout->horizontal_subsampling[plane]);
188 uint32_t stride = plane_width * layout->bytes_per_pixel[plane];
191 * The stride of Android YV12 buffers is required to be aligned to 16 bytes
192 * (see <system/graphics.h>).
194 if (format == DRM_FORMAT_YVU420_ANDROID)
195 stride = (plane == 0) ? ALIGN(stride, 32) : ALIGN(stride, 16);
200 uint32_t drv_size_from_format(uint32_t format, uint32_t stride, uint32_t height, size_t plane)
202 return stride * drv_height_from_format(format, height, plane);
205 static uint32_t subsample_stride(uint32_t stride, uint32_t format, size_t plane)
209 case DRM_FORMAT_YVU420:
210 case DRM_FORMAT_YVU420_ANDROID:
211 stride = DIV_ROUND_UP(stride, 2);
220 * This function fills in the buffer object given the driver aligned stride of
221 * the first plane, height and a format. This function assumes there is just
222 * one kernel buffer per buffer object.
224 int drv_bo_from_format(struct bo *bo, uint32_t stride, uint32_t aligned_height, uint32_t format)
227 size_t p, num_planes;
230 num_planes = drv_num_planes_from_format(format);
234 * HAL_PIXEL_FORMAT_YV12 requires that (see <system/graphics.h>):
235 * - the aligned height is same as the buffer's height.
236 * - the chroma stride is 16 bytes aligned, i.e., the luma's strides
237 * is 32 bytes aligned.
239 if (format == DRM_FORMAT_YVU420_ANDROID) {
240 assert(aligned_height == bo->height);
241 assert(stride == ALIGN(stride, 32));
244 for (p = 0; p < num_planes; p++) {
245 bo->strides[p] = subsample_stride(stride, format, p);
246 bo->sizes[p] = drv_size_from_format(format, bo->strides[p], aligned_height, p);
247 bo->offsets[p] = offset;
248 offset += bo->sizes[p];
251 bo->total_size = offset;
255 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
260 uint32_t aligned_width, aligned_height;
261 struct drm_mode_create_dumb create_dumb;
263 aligned_width = width;
264 aligned_height = height;
265 if (format == DRM_FORMAT_YVU420_ANDROID) {
267 * Align width to 32 pixels, so chroma strides are 16 bytes as
270 aligned_width = ALIGN(width, 32);
273 if (format == DRM_FORMAT_YVU420_ANDROID || format == DRM_FORMAT_YVU420) {
274 aligned_height = 3 * DIV_ROUND_UP(height, 2);
277 memset(&create_dumb, 0, sizeof(create_dumb));
278 create_dumb.height = aligned_height;
279 create_dumb.width = aligned_width;
280 create_dumb.bpp = layout_from_format(format)->bytes_per_pixel[0] * 8;
281 create_dumb.flags = 0;
283 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
285 drv_log("DRM_IOCTL_MODE_CREATE_DUMB failed (%d, %d)\n", bo->drv->fd, errno);
289 drv_bo_from_format(bo, create_dumb.pitch, height, format);
291 for (plane = 0; plane < bo->num_planes; plane++)
292 bo->handles[plane].u32 = create_dumb.handle;
294 bo->total_size = create_dumb.size;
298 int drv_dumb_bo_destroy(struct bo *bo)
300 struct drm_mode_destroy_dumb destroy_dumb;
303 memset(&destroy_dumb, 0, sizeof(destroy_dumb));
304 destroy_dumb.handle = bo->handles[0].u32;
306 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
308 drv_log("DRM_IOCTL_MODE_DESTROY_DUMB failed (handle=%x)\n", bo->handles[0].u32);
315 int drv_gem_bo_destroy(struct bo *bo)
317 struct drm_gem_close gem_close;
321 for (plane = 0; plane < bo->num_planes; plane++) {
322 for (i = 0; i < plane; i++)
323 if (bo->handles[i].u32 == bo->handles[plane].u32)
325 /* Make sure close hasn't already been called on this handle */
329 memset(&gem_close, 0, sizeof(gem_close));
330 gem_close.handle = bo->handles[plane].u32;
332 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
334 drv_log("DRM_IOCTL_GEM_CLOSE failed (handle=%x) error %d\n",
335 bo->handles[plane].u32, ret);
343 int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data)
347 struct drm_prime_handle prime_handle;
349 for (plane = 0; plane < bo->num_planes; plane++) {
350 memset(&prime_handle, 0, sizeof(prime_handle));
351 prime_handle.fd = data->fds[plane];
353 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
356 drv_log("DRM_IOCTL_PRIME_FD_TO_HANDLE failed (fd=%u)\n", prime_handle.fd);
359 * Need to call GEM close on planes that were opened,
360 * if any. Adjust the num_planes variable to be the
361 * plane that failed, so GEM close will be called on
362 * planes before that plane.
364 bo->num_planes = plane;
365 drv_gem_bo_destroy(bo);
369 bo->handles[plane].u32 = prime_handle.handle;
372 for (plane = 0; plane < bo->num_planes; plane++) {
373 pthread_mutex_lock(&bo->drv->driver_lock);
374 drv_increment_reference_count(bo->drv, bo, plane);
375 pthread_mutex_unlock(&bo->drv->driver_lock);
381 void *drv_dumb_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
385 struct drm_mode_map_dumb map_dumb;
387 memset(&map_dumb, 0, sizeof(map_dumb));
388 map_dumb.handle = bo->handles[plane].u32;
390 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
392 drv_log("DRM_IOCTL_MODE_MAP_DUMB failed\n");
396 for (i = 0; i < bo->num_planes; i++)
397 if (bo->handles[i].u32 == bo->handles[plane].u32)
398 vma->length += bo->sizes[i];
400 return mmap(0, vma->length, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
404 int drv_bo_munmap(struct bo *bo, struct vma *vma)
406 return munmap(vma->addr, vma->length);
409 int drv_mapping_destroy(struct bo *bo)
413 struct mapping *mapping;
417 * This function is called right before the buffer is destroyed. It will free any mappings
418 * associated with the buffer.
422 for (plane = 0; plane < bo->num_planes; plane++) {
423 while (idx < drv_array_size(bo->drv->mappings)) {
424 mapping = (struct mapping *)drv_array_at_idx(bo->drv->mappings, idx);
425 if (mapping->vma->handle != bo->handles[plane].u32) {
430 if (!--mapping->vma->refcount) {
431 ret = bo->drv->backend->bo_unmap(bo, mapping->vma);
433 drv_log("munmap failed\n");
440 /* This shrinks and shifts the array, so don't increment idx. */
441 drv_array_remove(bo->drv->mappings, idx);
448 int drv_get_prot(uint32_t map_flags)
450 return (BO_MAP_WRITE & map_flags) ? PROT_WRITE | PROT_READ : PROT_READ;
453 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, size_t plane)
458 if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
459 num = (uintptr_t)(count);
464 void drv_increment_reference_count(struct driver *drv, struct bo *bo, size_t plane)
466 uintptr_t num = drv_get_reference_count(drv, bo, plane);
468 /* If a value isn't in the table, drmHashDelete is a no-op */
469 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
470 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num + 1));
473 void drv_decrement_reference_count(struct driver *drv, struct bo *bo, size_t plane)
475 uintptr_t num = drv_get_reference_count(drv, bo, plane);
477 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
480 drmHashInsert(drv->buffer_table, bo->handles[plane].u32, (void *)(num - 1));
483 uint32_t drv_log_base2(uint32_t value)
493 void drv_add_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats,
494 struct format_metadata *metadata, uint64_t use_flags)
498 for (i = 0; i < num_formats; i++) {
499 struct combination combo = { .format = formats[i],
500 .metadata = *metadata,
501 .use_flags = use_flags };
503 drv_array_append(drv->combos, &combo);
507 void drv_modify_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
511 struct combination *combo;
512 /* Attempts to add the specified flags to an existing combination. */
513 for (i = 0; i < drv_array_size(drv->combos); i++) {
514 combo = (struct combination *)drv_array_at_idx(drv->combos, i);
515 if (combo->format == format && combo->metadata.tiling == metadata->tiling &&
516 combo->metadata.modifier == metadata->modifier)
517 combo->use_flags |= use_flags;
521 struct drv_array *drv_query_kms(struct driver *drv)
523 struct drv_array *kms_items;
524 uint64_t plane_type, use_flag;
527 drmModePlanePtr plane;
528 drmModePropertyPtr prop;
529 drmModePlaneResPtr resources;
530 drmModeObjectPropertiesPtr props;
532 kms_items = drv_array_init(sizeof(struct kms_item));
537 * The ability to return universal planes is only complete on
538 * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl
539 * therefore might return an error code, so don't check it. If it
540 * fails, it'll just return the plane list as overlay planes, which is
541 * fine in our case (our drivers already have cursor bits set).
542 * modetest in libdrm does the same thing.
544 drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
546 resources = drmModeGetPlaneResources(drv->fd);
550 for (i = 0; i < resources->count_planes; i++) {
551 plane = drmModeGetPlane(drv->fd, resources->planes[i]);
555 props = drmModeObjectGetProperties(drv->fd, plane->plane_id, DRM_MODE_OBJECT_PLANE);
559 for (j = 0; j < props->count_props; j++) {
560 prop = drmModeGetProperty(drv->fd, props->props[j]);
562 if (strcmp(prop->name, "type") == 0) {
563 plane_type = props->prop_values[j];
566 drmModeFreeProperty(prop);
570 switch (plane_type) {
571 case DRM_PLANE_TYPE_OVERLAY:
572 case DRM_PLANE_TYPE_PRIMARY:
573 use_flag = BO_USE_SCANOUT;
575 case DRM_PLANE_TYPE_CURSOR:
576 use_flag = BO_USE_CURSOR;
582 for (j = 0; j < plane->count_formats; j++) {
584 for (k = 0; k < drv_array_size(kms_items); k++) {
585 struct kms_item *item = drv_array_at_idx(kms_items, k);
586 if (item->format == plane->formats[j] &&
587 item->modifier == DRM_FORMAT_MOD_LINEAR) {
588 item->use_flags |= use_flag;
595 struct kms_item item = { .format = plane->formats[j],
596 .modifier = DRM_FORMAT_MOD_LINEAR,
597 .use_flags = use_flag };
599 drv_array_append(kms_items, &item);
603 drmModeFreeObjectProperties(props);
604 drmModeFreePlane(plane);
607 drmModeFreePlaneResources(resources);
609 if (kms_items && !drv_array_size(kms_items)) {
610 drv_array_destroy(kms_items);
617 int drv_modify_linear_combinations(struct driver *drv)
620 struct kms_item *item;
621 struct combination *combo;
622 struct drv_array *kms_items;
625 * All current drivers can scanout linear XRGB8888/ARGB8888 as a primary
626 * plane and as a cursor. Some drivers don't support
627 * drmModeGetPlaneResources, so add the combination here. Note that the
628 * kernel disregards the alpha component of ARGB unless it's an overlay
631 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &LINEAR_METADATA,
632 BO_USE_CURSOR | BO_USE_SCANOUT);
633 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &LINEAR_METADATA,
634 BO_USE_CURSOR | BO_USE_SCANOUT);
636 kms_items = drv_query_kms(drv);
640 for (i = 0; i < drv_array_size(kms_items); i++) {
641 item = (struct kms_item *)drv_array_at_idx(kms_items, i);
642 for (j = 0; j < drv_array_size(drv->combos); j++) {
643 combo = drv_array_at_idx(drv->combos, j);
644 if (item->format == combo->format)
645 combo->use_flags |= BO_USE_SCANOUT;
649 drv_array_destroy(kms_items);
654 * Pick the best modifier from modifiers, according to the ordering
655 * given by modifier_order.
657 uint64_t drv_pick_modifier(const uint64_t *modifiers, uint32_t count,
658 const uint64_t *modifier_order, uint32_t order_count)
662 for (i = 0; i < order_count; i++) {
663 for (j = 0; j < count; j++) {
664 if (modifiers[j] == modifier_order[i]) {
670 return DRM_FORMAT_MOD_LINEAR;