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_EXYNOS
8
9 // clang-format off
10 #include <assert.h>
11 #include <errno.h>
12 #include <stdio.h>
13 #include <string.h>
14 #include <xf86drm.h>
15 #include <exynos_drm.h>
16 // clang-format on
17
18 #include "drv_priv.h"
19 #include "helpers.h"
20 #include "util.h"
21
22 static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888 };
23
24 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12 };
25
exynos_init(struct driver * drv)26 static int exynos_init(struct driver *drv)
27 {
28 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
29 &LINEAR_METADATA, BO_USE_RENDER_MASK);
30
31 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
32 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
33
34 return drv_modify_linear_combinations(drv);
35 }
36
exynos_bo_create(struct bo * bo,uint32_t width,uint32_t height,uint32_t format,uint64_t use_flags)37 static int exynos_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
38 uint64_t use_flags)
39 {
40 size_t plane;
41
42 if (format == DRM_FORMAT_NV12) {
43 uint32_t chroma_height;
44 /* V4L2 s5p-mfc requires width to be 16 byte aligned and height 32. */
45 width = ALIGN(width, 16);
46 height = ALIGN(height, 32);
47 chroma_height = ALIGN(height / 2, 32);
48 bo->strides[0] = bo->strides[1] = width;
49 /* MFC v8+ requires 64 byte padding in the end of luma and chroma buffers. */
50 bo->sizes[0] = bo->strides[0] * height + 64;
51 bo->sizes[1] = bo->strides[1] * chroma_height + 64;
52 bo->offsets[0] = bo->offsets[1] = 0;
53 bo->total_size = bo->sizes[0] + bo->sizes[1];
54 } else if (format == DRM_FORMAT_XRGB8888 || format == DRM_FORMAT_ARGB8888) {
55 bo->strides[0] = drv_stride_from_format(format, width, 0);
56 bo->total_size = bo->sizes[0] = height * bo->strides[0];
57 bo->offsets[0] = 0;
58 } else {
59 drv_log("unsupported format %X\n", format);
60 assert(0);
61 return -EINVAL;
62 }
63
64 int ret;
65 for (plane = 0; plane < bo->num_planes; plane++) {
66 size_t size = bo->sizes[plane];
67 struct drm_exynos_gem_create gem_create;
68
69 memset(&gem_create, 0, sizeof(gem_create));
70 gem_create.size = size;
71 gem_create.flags = EXYNOS_BO_NONCONTIG;
72
73 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &gem_create);
74 if (ret) {
75 drv_log("DRM_IOCTL_EXYNOS_GEM_CREATE failed (size=%zu)\n", size);
76 goto cleanup_planes;
77 }
78
79 bo->handles[plane].u32 = gem_create.handle;
80 }
81
82 return 0;
83
84 cleanup_planes:
85 for (; plane != 0; plane--) {
86 struct drm_gem_close gem_close;
87 memset(&gem_close, 0, sizeof(gem_close));
88 gem_close.handle = bo->handles[plane - 1].u32;
89 int gem_close_ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
90 if (gem_close_ret) {
91 drv_log("DRM_IOCTL_GEM_CLOSE failed: %d\n", gem_close_ret);
92 }
93 }
94
95 return ret;
96 }
97
98 /*
99 * Use dumb mapping with exynos even though a GEM buffer is created.
100 * libdrm does the same thing in exynos_drm.c
101 */
102 const struct backend backend_exynos = {
103 .name = "exynos",
104 .init = exynos_init,
105 .bo_create = exynos_bo_create,
106 .bo_destroy = drv_gem_bo_destroy,
107 .bo_import = drv_prime_bo_import,
108 .bo_map = drv_dumb_bo_map,
109 .bo_unmap = drv_bo_munmap,
110 };
111
112 #endif
113