OSDN Git Service

minigbm: rockchip/mediatek: remove R8 as texture source on Mali/Bifrost
[android-x86/external-minigbm.git] / rockchip.c
1 /*
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.
5  */
6
7 #ifdef DRV_ROCKCHIP
8
9 #include <errno.h>
10 #include <inttypes.h>
11 #include <rockchip_drm.h>
12 #include <stdio.h>
13 #include <string.h>
14 #include <sys/mman.h>
15 #include <xf86drm.h>
16
17 #include "drv_priv.h"
18 #include "helpers.h"
19 #include "util.h"
20
21 struct rockchip_private_map_data {
22         void *cached_addr;
23         void *gem_addr;
24 };
25
26 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
27                                                   DRM_FORMAT_BGR888,   DRM_FORMAT_RGB565,
28                                                   DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };
29
30 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_YVU420,
31                                                    DRM_FORMAT_YVU420_ANDROID };
32
33 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
34 {
35         /* We've restricted ourselves to four bytes per pixel. */
36         const uint32_t pixel_size = 4;
37
38         const uint32_t clump_width = 4;
39         const uint32_t clump_height = 4;
40
41 #define AFBC_NARROW 1
42 #if AFBC_NARROW == 1
43         const uint32_t block_width = 4 * clump_width;
44         const uint32_t block_height = 4 * clump_height;
45 #else
46         const uint32_t block_width = 8 * clump_width;
47         const uint32_t block_height = 2 * clump_height;
48 #endif
49
50         const uint32_t header_block_size = 16;
51         const uint32_t body_block_size = block_width * block_height * pixel_size;
52         const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
53         const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
54         const uint32_t total_blocks = width_in_blocks * height_in_blocks;
55
56         const uint32_t header_plane_size = total_blocks * header_block_size;
57         const uint32_t body_plane_size = total_blocks * body_block_size;
58
59         /* GPU requires 64 bytes, but EGL import code expects 1024 byte
60          * alignement for the body plane. */
61         const uint32_t body_plane_alignment = 1024;
62
63         const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
64         const uint32_t total_size = body_plane_offset + body_plane_size;
65
66         bo->strides[0] = width_in_blocks * block_width * pixel_size;
67         bo->sizes[0] = total_size;
68         bo->offsets[0] = 0;
69
70         bo->total_size = total_size;
71
72         bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
73
74         return 0;
75 }
76
77 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
78 {
79         uint32_t i, j;
80         uint64_t use_flags;
81         struct combination *combo;
82         struct format_metadata metadata;
83
84         for (i = 0; i < drv_array_size(drv->combos); i++) {
85                 combo = (struct combination *)drv_array_at_idx(drv->combos, i);
86                 if (combo->format == item->format) {
87                         if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
88                                 use_flags = BO_USE_RENDERING | BO_USE_SCANOUT | BO_USE_TEXTURE;
89                                 metadata.modifier = item->modifier;
90                                 metadata.tiling = 0;
91                                 metadata.priority = 2;
92
93                                 for (j = 0; j < ARRAY_SIZE(texture_source_formats); j++) {
94                                         if (item->format == texture_source_formats[j])
95                                                 use_flags &= ~BO_USE_RENDERING;
96                                 }
97
98                                 drv_add_combinations(drv, &item->format, 1, &metadata, use_flags);
99                         } else {
100                                 combo->use_flags |= item->use_flags;
101                         }
102                 }
103         }
104
105         return 0;
106 }
107
108 static int rockchip_init(struct driver *drv)
109 {
110         int ret;
111         uint32_t i;
112         struct drv_array *kms_items;
113         struct format_metadata metadata;
114
115         metadata.tiling = 0;
116         metadata.priority = 1;
117         metadata.modifier = DRM_FORMAT_MOD_LINEAR;
118
119         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
120                              &metadata, BO_USE_RENDER_MASK);
121
122         drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
123                              &metadata, BO_USE_TEXTURE_MASK);
124
125         /*
126          * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
127          * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
128          */
129         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_ENCODER);
130         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_ENCODER);
131
132         drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
133         drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
134
135         /* Camera ISP supports only NV12 output. */
136         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
137                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_DECODER);
138         /*
139          * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
140          * from camera.
141          */
142         drv_add_combination(drv, DRM_FORMAT_R8, &metadata,
143                             BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK |
144                                 BO_USE_LINEAR);
145
146         kms_items = drv_query_kms(drv);
147         if (!kms_items)
148                 return 0;
149
150         for (i = 0; i < drv_array_size(kms_items); i++) {
151                 ret = rockchip_add_kms_item(drv, (struct kms_item *)drv_array_at_idx(kms_items, i));
152                 if (ret) {
153                         drv_array_destroy(kms_items);
154                         return ret;
155                 }
156         }
157
158         drv_array_destroy(kms_items);
159         return 0;
160 }
161
162 static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
163                                              uint32_t format, const uint64_t *modifiers,
164                                              uint32_t count)
165 {
166         int ret;
167         size_t plane;
168         struct drm_rockchip_gem_create gem_create;
169
170         if (format == DRM_FORMAT_NV12) {
171                 uint32_t w_mbs = DIV_ROUND_UP(width, 16);
172                 uint32_t h_mbs = DIV_ROUND_UP(height, 16);
173
174                 uint32_t aligned_width = w_mbs * 16;
175
176                 // TODO(b/140152839): Align height by 16 once camera HAL
177                 // supports multi planar format.
178                 drv_bo_from_format(bo, aligned_width, height, format);
179                 /*
180                  * drv_bo_from_format updates total_size. Add an extra data space for rockchip video
181                  * driver to store motion vectors.
182                  */
183                 bo->total_size += w_mbs * h_mbs * 128;
184         } else if (width <= 2560 &&
185                    drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
186                 /* If the caller has decided they can use AFBC, always
187                  * pick that */
188                 afbc_bo_from_format(bo, width, height, format);
189         } else {
190                 if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
191                         errno = EINVAL;
192                         drv_log("no usable modifier found\n");
193                         return -1;
194                 }
195
196                 uint32_t stride;
197                 /*
198                  * Since the ARM L1 cache line size is 64 bytes, align to that
199                  * as a performance optimization. For YV12, the Mali cmem allocator
200                  * requires that chroma planes are aligned to 64-bytes, so align the
201                  * luma plane to 128 bytes.
202                  */
203                 stride = drv_stride_from_format(format, width, 0);
204                 if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID)
205                         stride = ALIGN(stride, 128);
206                 else
207                         stride = ALIGN(stride, 64);
208
209                 drv_bo_from_format(bo, stride, height, format);
210         }
211
212         memset(&gem_create, 0, sizeof(gem_create));
213         gem_create.size = bo->total_size;
214
215         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);
216
217         if (ret) {
218                 drv_log("DRM_IOCTL_ROCKCHIP_GEM_CREATE failed (size=%" PRIu64 ")\n",
219                         gem_create.size);
220                 return -errno;
221         }
222
223         for (plane = 0; plane < bo->num_planes; plane++)
224                 bo->handles[plane].u32 = gem_create.handle;
225
226         return 0;
227 }
228
229 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
230                               uint64_t use_flags)
231 {
232         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
233         return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
234                                                  ARRAY_SIZE(modifiers));
235 }
236
237 static void *rockchip_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
238 {
239         int ret;
240         struct drm_rockchip_gem_map_off gem_map;
241         struct rockchip_private_map_data *priv;
242
243         /* We can only map buffers created with SW access flags, which should
244          * have no modifiers (ie, not AFBC). */
245         if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
246                 return MAP_FAILED;
247
248         memset(&gem_map, 0, sizeof(gem_map));
249         gem_map.handle = bo->handles[0].u32;
250
251         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
252         if (ret) {
253                 drv_log("DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
254                 return MAP_FAILED;
255         }
256
257         void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
258                           gem_map.offset);
259
260         vma->length = bo->total_size;
261
262         if (bo->use_flags & BO_USE_RENDERSCRIPT) {
263                 priv = calloc(1, sizeof(*priv));
264                 priv->cached_addr = calloc(1, bo->total_size);
265                 priv->gem_addr = addr;
266                 vma->priv = priv;
267                 addr = priv->cached_addr;
268         }
269
270         return addr;
271 }
272
273 static int rockchip_bo_unmap(struct bo *bo, struct vma *vma)
274 {
275         if (vma->priv) {
276                 struct rockchip_private_map_data *priv = vma->priv;
277                 vma->addr = priv->gem_addr;
278                 free(priv->cached_addr);
279                 free(priv);
280                 vma->priv = NULL;
281         }
282
283         return munmap(vma->addr, vma->length);
284 }
285
286 static int rockchip_bo_invalidate(struct bo *bo, struct mapping *mapping)
287 {
288         if (mapping->vma->priv) {
289                 struct rockchip_private_map_data *priv = mapping->vma->priv;
290                 memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
291         }
292
293         return 0;
294 }
295
296 static int rockchip_bo_flush(struct bo *bo, struct mapping *mapping)
297 {
298         struct rockchip_private_map_data *priv = mapping->vma->priv;
299         if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
300                 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
301
302         return 0;
303 }
304
305 static uint32_t rockchip_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
306 {
307         switch (format) {
308         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
309                 /* Camera subsystem requires NV12. */
310                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
311                         return DRM_FORMAT_NV12;
312                 /*HACK: See b/28671744 */
313                 return DRM_FORMAT_XBGR8888;
314         case DRM_FORMAT_FLEX_YCbCr_420_888:
315                 return DRM_FORMAT_NV12;
316         default:
317                 return format;
318         }
319 }
320
321 const struct backend backend_rockchip = {
322         .name = "rockchip",
323         .init = rockchip_init,
324         .bo_create = rockchip_bo_create,
325         .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
326         .bo_destroy = drv_gem_bo_destroy,
327         .bo_import = drv_prime_bo_import,
328         .bo_map = rockchip_bo_map,
329         .bo_unmap = rockchip_bo_unmap,
330         .bo_invalidate = rockchip_bo_invalidate,
331         .bo_flush = rockchip_bo_flush,
332         .resolve_format = rockchip_resolve_format,
333 };
334
335 #endif