1 /*
2 * Copyright 2015 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.
5 */
6
7 #ifdef DRV_MEDIATEK
8
9 // clang-format off
10 #include <errno.h>
11 #include <fcntl.h>
12 #include <inttypes.h>
13 #include <poll.h>
14 #include <stdio.h>
15 #include <string.h>
16 #include <sys/mman.h>
17 #include <unistd.h>
18 #include <xf86drm.h>
19 #include <mediatek_drm.h>
20 // clang-format on
21
22 #include "drv_priv.h"
23 #include "helpers.h"
24 #include "util.h"
25
26 #define TILE_TYPE_LINEAR 0
27
28 struct mediatek_private_map_data {
29 void *cached_addr;
30 void *gem_addr;
31 int prime_fd;
32 };
33
34 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
35 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
36 DRM_FORMAT_XRGB8888 };
37
38 #ifdef MTK_MT8183
39 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV21, DRM_FORMAT_NV12,
40 DRM_FORMAT_YUYV, DRM_FORMAT_YVU420,
41 DRM_FORMAT_YVU420_ANDROID };
42 #else
43 static const uint32_t texture_source_formats[] = { DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID,
44 DRM_FORMAT_NV12 };
45 #endif
46
mediatek_init(struct driver * drv)47 static int mediatek_init(struct driver *drv)
48 {
49 struct format_metadata metadata;
50
51 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
52 &LINEAR_METADATA, BO_USE_RENDER_MASK | BO_USE_SCANOUT);
53
54 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
55 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
56
57 drv_add_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA, BO_USE_SW_MASK | BO_USE_LINEAR);
58
59 /* Android CTS tests require this. */
60 drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
61
62 /* Support BO_USE_HW_VIDEO_DECODER for protected content minigbm allocations. */
63 metadata.tiling = TILE_TYPE_LINEAR;
64 metadata.priority = 1;
65 metadata.modifier = DRM_FORMAT_MOD_LINEAR;
66 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_DECODER);
67 drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata, BO_USE_HW_VIDEO_DECODER);
68 #if defined(MTK_MT8183) || defined(MTK_MT8192) || defined(MTK_MT8195)
69 // TODO(hiroh): Switch to use NV12 for video decoder on MT8173 as well.
70 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_DECODER);
71 #endif
72
73 /*
74 * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB for input/output from
75 * hardware decoder/encoder.
76 */
77 drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
78 BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER |
79 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
80
81 /* NV12 format for encoding and display. */
82 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
83 BO_USE_SCANOUT | BO_USE_HW_VIDEO_ENCODER | BO_USE_CAMERA_READ |
84 BO_USE_CAMERA_WRITE);
85
86 #ifdef MTK_MT8183
87 /* Only for MT8183 Camera subsystem */
88 drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
89 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
90 drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
91 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
92 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
93 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
94 /* Private formats for private reprocessing in camera */
95 drv_add_combination(drv, DRM_FORMAT_MTISP_SXYZW10, &metadata,
96 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK);
97 #endif
98
99 return drv_modify_linear_combinations(drv);
100 }
101
mediatek_bo_create_with_modifiers(struct bo * bo,uint32_t width,uint32_t height,uint32_t format,const uint64_t * modifiers,uint32_t count)102 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
103 uint32_t format, const uint64_t *modifiers,
104 uint32_t count)
105 {
106 int ret;
107 size_t plane;
108 uint32_t stride;
109 struct drm_mtk_gem_create gem_create = { 0 };
110
111 if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
112 errno = EINVAL;
113 drv_log("no usable modifier found\n");
114 return -EINVAL;
115 }
116
117 /*
118 * Since the ARM L1 cache line size is 64 bytes, align to that as a
119 * performance optimization.
120 */
121 stride = drv_stride_from_format(format, width, 0);
122 stride = ALIGN(stride, 64);
123
124 if (bo->meta.use_flags & BO_USE_HW_VIDEO_ENCODER) {
125 uint32_t aligned_height = ALIGN(height, 32);
126 uint32_t padding[DRV_MAX_PLANES] = { 0 };
127
128 for (plane = 0; plane < bo->meta.num_planes; ++plane) {
129 uint32_t plane_stride = drv_stride_from_format(format, stride, plane);
130 padding[plane] = plane_stride *
131 (32 / drv_vertical_subsampling_from_format(format, plane));
132 }
133
134 drv_bo_from_format_and_padding(bo, stride, aligned_height, format, padding);
135 } else {
136 #ifdef MTK_MT8183
137 /*
138 * JPEG Encoder Accelerator requires 16x16 alignment. We want the buffer
139 * from camera can be put in JEA directly so align the height to 16
140 * bytes.
141 */
142 if (format == DRM_FORMAT_NV12)
143 height = ALIGN(height, 16);
144 #endif
145 drv_bo_from_format(bo, stride, height, format);
146 }
147
148 gem_create.size = bo->meta.total_size;
149
150 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
151 if (ret) {
152 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
153 return -errno;
154 }
155
156 for (plane = 0; plane < bo->meta.num_planes; plane++)
157 bo->handles[plane].u32 = gem_create.handle;
158
159 return 0;
160 }
161
mediatek_bo_create(struct bo * bo,uint32_t width,uint32_t height,uint32_t format,uint64_t use_flags)162 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
163 uint64_t use_flags)
164 {
165 uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
166 return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
167 ARRAY_SIZE(modifiers));
168 }
169
mediatek_bo_map(struct bo * bo,struct vma * vma,size_t plane,uint32_t map_flags)170 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
171 {
172 int ret, prime_fd;
173 struct drm_mtk_gem_map_off gem_map = { 0 };
174 struct mediatek_private_map_data *priv;
175
176 gem_map.handle = bo->handles[0].u32;
177
178 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
179 if (ret) {
180 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
181 return MAP_FAILED;
182 }
183
184 prime_fd = drv_bo_get_plane_fd(bo, 0);
185 if (prime_fd < 0) {
186 drv_log("Failed to get a prime fd\n");
187 return MAP_FAILED;
188 }
189
190 void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
191 gem_map.offset);
192
193 vma->length = bo->meta.total_size;
194
195 priv = calloc(1, sizeof(*priv));
196 priv->prime_fd = prime_fd;
197 vma->priv = priv;
198
199 if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
200 priv->cached_addr = calloc(1, bo->meta.total_size);
201 priv->gem_addr = addr;
202 addr = priv->cached_addr;
203 }
204
205 return addr;
206 }
207
mediatek_bo_unmap(struct bo * bo,struct vma * vma)208 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
209 {
210 if (vma->priv) {
211 struct mediatek_private_map_data *priv = vma->priv;
212
213 if (priv->cached_addr) {
214 vma->addr = priv->gem_addr;
215 free(priv->cached_addr);
216 }
217
218 close(priv->prime_fd);
219 free(priv);
220 vma->priv = NULL;
221 }
222
223 return munmap(vma->addr, vma->length);
224 }
225
mediatek_bo_invalidate(struct bo * bo,struct mapping * mapping)226 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
227 {
228 struct mediatek_private_map_data *priv = mapping->vma->priv;
229
230 if (priv) {
231 struct pollfd fds = {
232 .fd = priv->prime_fd,
233 };
234
235 if (mapping->vma->map_flags & BO_MAP_WRITE)
236 fds.events |= POLLOUT;
237
238 if (mapping->vma->map_flags & BO_MAP_READ)
239 fds.events |= POLLIN;
240
241 poll(&fds, 1, -1);
242 if (fds.revents != fds.events)
243 drv_log("poll prime_fd failed\n");
244
245 if (priv->cached_addr)
246 memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
247 }
248
249 return 0;
250 }
251
mediatek_bo_flush(struct bo * bo,struct mapping * mapping)252 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
253 {
254 struct mediatek_private_map_data *priv = mapping->vma->priv;
255 if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
256 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
257
258 return 0;
259 }
260
mediatek_resolve_format(struct driver * drv,uint32_t format,uint64_t use_flags)261 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
262 {
263 switch (format) {
264 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
265 #ifdef MTK_MT8183
266 /* Only MT8183 Camera subsystem offers private reprocessing
267 * capability. CAMERA_READ indicates the buffer is intended for
268 * reprocessing and hence given the private format for MTK. */
269 if (use_flags & BO_USE_CAMERA_READ)
270 return DRM_FORMAT_MTISP_SXYZW10;
271 #endif
272 if (use_flags & BO_USE_CAMERA_WRITE)
273 return DRM_FORMAT_NV12;
274
275 /*HACK: See b/28671744 */
276 return DRM_FORMAT_XBGR8888;
277 case DRM_FORMAT_FLEX_YCbCr_420_888:
278 #if defined(MTK_MT8183) || defined(MTK_MT8192) || defined(MTK_MT8195)
279 // TODO(hiroh): Switch to use NV12 for video decoder on MT8173 as well.
280 if (use_flags & (BO_USE_HW_VIDEO_DECODER)) {
281 return DRM_FORMAT_NV12;
282 }
283 #endif
284 if (use_flags &
285 (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_ENCODER)) {
286 return DRM_FORMAT_NV12;
287 }
288 return DRM_FORMAT_YVU420;
289 default:
290 return format;
291 }
292 }
293
294 const struct backend backend_mediatek = {
295 .name = "mediatek",
296 .init = mediatek_init,
297 .bo_create = mediatek_bo_create,
298 .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
299 .bo_destroy = drv_gem_bo_destroy,
300 .bo_import = drv_prime_bo_import,
301 .bo_map = mediatek_bo_map,
302 .bo_unmap = mediatek_bo_unmap,
303 .bo_invalidate = mediatek_bo_invalidate,
304 .bo_flush = mediatek_bo_flush,
305 .resolve_format = mediatek_resolve_format,
306 };
307
308 #endif
309