2 * Copyright (c) 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.
14 #include <xf86drmMode.h>
20 int drv_bpp_from_format(uint32_t format, size_t plane)
22 assert(plane < drv_num_planes_from_format(format));
25 case DRM_FORMAT_BGR233:
28 case DRM_FORMAT_RGB332:
29 case DRM_FORMAT_YVU420:
33 * NV12 is laid out as follows. Each letter represents a byte.
35 * Y0_0, Y0_1, Y0_2, Y0_3, ..., Y0_N
36 * Y1_0, Y1_1, Y1_2, Y1_3, ..., Y1_N
38 * YM_0, YM_1, YM_2, YM_3, ..., YM_N
40 * Cb01_01, Cr01_01, Cb01_23, Cr01_23, ..., Cb01_(N-1)N, Cr01_(N-1)N
41 * Cb23_01, Cr23_01, Cb23_23, Cr23_23, ..., Cb23_(N-1)N, Cr23_(N-1)N
43 * Cb(M-1)M_01, Cr(M-1)M_01, ..., Cb(M-1)M_(N-1)N, Cr(M-1)M_(N-1)N
45 * Pixel (0, 0) requires Y0_0, Cb01_01 and Cr01_01. Pixel (0, 1) requires
46 * Y0_1, Cb01_01 and Cr01_01. So for a single pixel, 2 bytes of luma data
50 return (plane == 0) ? 8 : 16;
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);
107 * This function fills in the buffer object given driver aligned dimensions
108 * and a format. This function assumes there is just one kernel buffer per
111 int drv_bo_from_format(struct bo *bo, uint32_t width, uint32_t height,
115 size_t p, num_planes;
118 num_planes = drv_num_planes_from_format(format);
121 for (p = 0; p < num_planes; p++) {
122 bo->strides[p] = drv_stride_from_format(format, width, p);
123 bo->sizes[p] = drv_size_from_format(format, bo->strides[p],
125 bo->offsets[p] = offset;
126 offset += bo->sizes[p];
129 bo->total_size = bo->offsets[bo->num_planes - 1] +
130 bo->sizes[bo->num_planes - 1];
135 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height,
136 uint32_t format, uint32_t flags)
138 struct drm_mode_create_dumb create_dumb;
141 /* Only single-plane formats are supported */
142 assert(drv_num_planes_from_format(format) == 1);
144 memset(&create_dumb, 0, sizeof(create_dumb));
145 create_dumb.height = height;
146 create_dumb.width = width;
147 create_dumb.bpp = drv_bpp_from_format(format, 0);
148 create_dumb.flags = 0;
150 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
152 fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
156 bo->handles[0].u32 = create_dumb.handle;
158 bo->total_size = bo->sizes[0] = create_dumb.size;
159 bo->strides[0] = create_dumb.pitch;
164 int drv_dumb_bo_destroy(struct bo *bo)
166 struct drm_mode_destroy_dumb destroy_dumb;
169 memset(&destroy_dumb, 0, sizeof(destroy_dumb));
170 destroy_dumb.handle = bo->handles[0].u32;
172 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
174 fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed "
175 "(handle=%x)\n", bo->handles[0].u32);
182 int drv_gem_bo_destroy(struct bo *bo)
184 struct drm_gem_close gem_close;
188 for (plane = 0; plane < bo->num_planes; plane++) {
189 for (i = 0; i < plane; i++)
190 if (bo->handles[i].u32 == bo->handles[plane].u32)
192 /* Make sure close hasn't already been called on this handle */
196 memset(&gem_close, 0, sizeof(gem_close));
197 gem_close.handle = bo->handles[plane].u32;
199 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
201 fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed "
202 "(handle=%x) error %d\n",
203 bo->handles[plane].u32, ret);
211 void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane)
215 struct drm_mode_map_dumb map_dumb;
217 memset(&map_dumb, 0, sizeof(map_dumb));
218 map_dumb.handle = bo->handles[plane].u32;
220 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
222 fprintf(stderr, "drv: DRM_IOCTL_MODE_MAP_DUMB failed \n");
226 for (i = 0; i < bo->num_planes; i++)
227 if (bo->handles[i].u32 == bo->handles[plane].u32)
228 data->length += bo->sizes[i];
230 return mmap(0, data->length, PROT_READ | PROT_WRITE, MAP_SHARED,
231 bo->drv->fd, map_dumb.offset);
234 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo,
240 if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
241 num = (uintptr_t) (count);
246 void drv_increment_reference_count(struct driver *drv, struct bo *bo,
249 uintptr_t num = drv_get_reference_count(drv, bo, plane);
251 /* If a value isn't in the table, drmHashDelete is a no-op */
252 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
253 drmHashInsert(drv->buffer_table, bo->handles[plane].u32,
257 void drv_decrement_reference_count(struct driver *drv, struct bo *bo,
260 uintptr_t num = drv_get_reference_count(drv, bo, plane);
262 drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
265 drmHashInsert(drv->buffer_table, bo->handles[plane].u32,
269 uint32_t drv_log_base2(uint32_t value)
279 /* Inserts a combination into list -- caller should have lock on driver. */
280 void drv_insert_supported_combination(struct driver *drv, uint32_t format,
281 uint64_t usage, uint64_t modifier)
283 struct combination_list_element *elem;
285 elem = calloc(1, sizeof(*elem));
286 elem->combination.format = format;
287 elem->combination.modifier = modifier;
288 elem->combination.usage = usage;
289 LIST_ADD(&elem->link, &drv->backend->combinations);
292 void drv_insert_combinations(struct driver *drv, struct supported_combination *combos,
297 pthread_mutex_lock(&drv->driver_lock);
299 for (i = 0; i < size; i++)
300 drv_insert_supported_combination(drv, combos[i].format,
304 pthread_mutex_unlock(&drv->driver_lock);
307 void drv_modify_supported_combination(struct driver *drv, uint32_t format,
308 uint64_t usage, uint64_t modifier)
311 * Attempts to add the specified usage to an existing {format, modifier}
312 * pair. If the pair is not present, a new combination is created.
316 pthread_mutex_lock(&drv->driver_lock);
318 list_for_each_entry(struct combination_list_element,
319 elem, &drv->backend->combinations, link) {
320 if (elem->combination.format == format &&
321 elem->combination.modifier == modifier) {
322 elem->combination.usage |= usage;
329 drv_insert_supported_combination(drv, format, usage, modifier);
331 pthread_mutex_unlock(&drv->driver_lock);
334 int drv_add_kms_flags(struct driver *drv)
338 uint64_t flag, usage;
339 drmModePlanePtr plane;
340 drmModePropertyPtr prop;
341 drmModePlaneResPtr resources;
342 drmModeObjectPropertiesPtr props;
345 * All current drivers can scanout XRGB8888/ARGB8888 as a primary plane.
346 * Some older kernel versions can only return overlay planes, so add the
347 * combination here. Note that the kernel disregards the alpha component
348 * of ARGB unless it's an overlay plane.
350 drv_modify_supported_combination(drv, DRM_FORMAT_XRGB8888,
352 drv_modify_supported_combination(drv, DRM_FORMAT_ARGB8888,
356 * The ability to return universal planes is only complete on
357 * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl
358 * therefore might return an error code, so don't check it. If it
359 * fails, it'll just return the plane list as overlay planes, which is
360 * fine in our case (our drivers already have cursor bits set).
361 * modetest in libdrm does the same thing.
363 drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
365 resources = drmModeGetPlaneResources(drv->fd);
369 for (i = 0; i < resources->count_planes; i++) {
371 plane = drmModeGetPlane(drv->fd, resources->planes[i]);
376 props = drmModeObjectGetProperties(drv->fd, plane->plane_id,
377 DRM_MODE_OBJECT_PLANE);
381 for (j = 0; j < props->count_props; j++) {
383 prop = drmModeGetProperty(drv->fd, props->props[j]);
385 if (strcmp(prop->name, "type") == 0) {
386 flag = props->prop_values[j];
388 drmModeFreeProperty(prop);
393 case DRM_PLANE_TYPE_OVERLAY:
394 case DRM_PLANE_TYPE_PRIMARY:
395 usage = BO_USE_SCANOUT;
397 case DRM_PLANE_TYPE_CURSOR:
398 usage = BO_USE_CURSOR;
404 for (j = 0; j < plane->count_formats; j++)
405 drv_modify_supported_combination(drv, plane->formats[j],
408 drmModeFreeObjectProperties(props);
409 drmModeFreePlane(plane);
413 drmModeFreePlaneResources(resources);