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.
14 #include <rockchip_drm.h>
20 static struct supported_combination combos[12] = {
21 {DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE,
22 BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
23 BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
24 {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
25 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
26 {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
27 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
28 {DRM_FORMAT_NV12, DRM_FORMAT_MOD_NONE,
29 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
30 {DRM_FORMAT_NV12, DRM_FORMAT_MOD_NONE,
31 BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
32 {DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE,
33 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
34 {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
35 BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
36 BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
37 {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
38 BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
39 {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
40 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
41 {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
42 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
43 {DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE,
44 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
45 {DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE,
46 BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
49 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height,
52 /* We've restricted ourselves to four bytes per pixel. */
53 const uint32_t pixel_size = 4;
55 const uint32_t clump_width = 4;
56 const uint32_t clump_height = 4;
60 const uint32_t block_width = 4 * clump_width;
61 const uint32_t block_height = 4 * clump_height;
63 const uint32_t block_width = 8 * clump_width;
64 const uint32_t block_height = 2 * clump_height;
67 const uint32_t header_block_size = 16;
68 const uint32_t body_block_size = block_width * block_height * pixel_size;
69 const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
70 const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
71 const uint32_t total_blocks = width_in_blocks * height_in_blocks;
73 const uint32_t header_plane_size = total_blocks * header_block_size;
74 const uint32_t body_plane_size = total_blocks * body_block_size;
76 /* GPU requires 64 bytes, but EGL import code expects 1024 byte
77 * alignement for the body plane. */
78 const uint32_t body_plane_alignment = 1024;
80 const uint32_t body_plane_offset =
81 ALIGN(header_plane_size, body_plane_alignment);
82 const uint32_t total_size =
83 body_plane_offset + body_plane_size;
85 bo->strides[0] = width_in_blocks * block_width * pixel_size;
86 bo->sizes[0] = total_size;
89 bo->total_size = total_size;
91 bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
96 static int rockchip_init(struct driver *drv)
98 drv_insert_combinations(drv, combos, ARRAY_SIZE(combos));
99 return drv_add_kms_flags(drv);
102 static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
106 for (i = 0; i < count; i++)
107 if (list[i] == modifier)
113 static int rockchip_bo_create_with_modifiers(struct bo *bo,
114 uint32_t width, uint32_t height,
116 const uint64_t *modifiers,
121 struct drm_rockchip_gem_create gem_create;
123 if (format == DRM_FORMAT_NV12) {
124 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
125 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);
127 uint32_t aligned_width = w_mbs * 16;
128 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
130 drv_bo_from_format(bo, aligned_width, height, format);
131 bo->total_size = bo->strides[0] * aligned_height
132 + w_mbs * h_mbs * 128;
133 } else if (width <= 2560 &&
134 has_modifier(modifiers, count,
135 DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
136 /* If the caller has decided they can use AFBC, always
138 afbc_bo_from_format(bo, width, height, format);
140 if (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
142 fprintf(stderr, "no usable modifier found\n");
147 * Since the ARM L1 cache line size is 64 bytes, align to that
148 * as a performance optimization.
150 uint32_t bytes_per_pixel = drv_stride_from_format(format, 1, 0);
151 width = ALIGN(width, DIV_ROUND_UP(64, bytes_per_pixel));
152 drv_bo_from_format(bo, width, height, format);
155 memset(&gem_create, 0, sizeof(gem_create));
156 gem_create.size = bo->total_size;
158 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
162 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
163 "(size=%llu)\n", gem_create.size);
167 for (plane = 0; plane < bo->num_planes; plane++)
168 bo->handles[plane].u32 = gem_create.handle;
173 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height,
174 uint32_t format, uint32_t flags)
176 uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };
178 return rockchip_bo_create_with_modifiers(bo, width, height, format,
179 modifiers, ARRAY_SIZE(modifiers));
182 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
185 struct drm_rockchip_gem_map_off gem_map;
187 /* We can only map buffers created with SW access flags, which should
188 * have no modifiers (ie, not AFBC). */
189 if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
192 memset(&gem_map, 0, sizeof(gem_map));
193 gem_map.handle = bo->handles[0].u32;
195 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
199 "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
203 data->length = bo->total_size;
205 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
206 bo->drv->fd, gem_map.offset);
209 static uint32_t rockchip_resolve_format(uint32_t format)
212 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
213 /*HACK: See b/28671744 */
214 return DRM_FORMAT_XBGR8888;
215 case DRM_FORMAT_FLEX_YCbCr_420_888:
216 return DRM_FORMAT_NV12;
222 struct backend backend_rockchip =
225 .init = rockchip_init,
226 .bo_create = rockchip_bo_create,
227 .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
228 .bo_destroy = drv_gem_bo_destroy,
229 .bo_import = drv_prime_bo_import,
230 .bo_map = rockchip_bo_map,
231 .resolve_format = rockchip_resolve_format,