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minigbm: Make sure no mappings remain when closing a GEM handle
[android-x86/external-minigbm.git] / exynos.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_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
26 static int exynos_init(struct driver *drv)
27 {
28         int ret;
29         ret = drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
30                                    &LINEAR_METADATA, BO_USE_RENDER_MASK);
31         if (ret)
32                 return ret;
33
34         ret = drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
35                                    &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
36         if (ret)
37                 return ret;
38
39         return drv_modify_linear_combinations(drv);
40 }
41
42 static int exynos_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
43                             uint32_t flags)
44 {
45         size_t plane;
46
47         if (format == DRM_FORMAT_NV12) {
48                 uint32_t chroma_height;
49                 /* V4L2 s5p-mfc requires width to be 16 byte aligned and height 32. */
50                 width = ALIGN(width, 16);
51                 height = ALIGN(height, 32);
52                 chroma_height = ALIGN(height / 2, 32);
53                 bo->strides[0] = bo->strides[1] = width;
54                 /* MFC v8+ requires 64 byte padding in the end of luma and chroma buffers. */
55                 bo->sizes[0] = bo->strides[0] * height + 64;
56                 bo->sizes[1] = bo->strides[1] * chroma_height + 64;
57                 bo->offsets[0] = bo->offsets[1] = 0;
58                 bo->total_size = bo->sizes[0] + bo->sizes[1];
59         } else if (format == DRM_FORMAT_XRGB8888 || format == DRM_FORMAT_ARGB8888) {
60                 bo->strides[0] = drv_stride_from_format(format, width, 0);
61                 bo->total_size = bo->sizes[0] = height * bo->strides[0];
62                 bo->offsets[0] = 0;
63         } else {
64                 fprintf(stderr, "drv: unsupported format %X\n", format);
65                 assert(0);
66                 return -EINVAL;
67         }
68
69         int ret;
70         for (plane = 0; plane < bo->num_planes; plane++) {
71                 size_t size = bo->sizes[plane];
72                 struct drm_exynos_gem_create gem_create;
73
74                 memset(&gem_create, 0, sizeof(gem_create));
75                 gem_create.size = size;
76                 gem_create.flags = EXYNOS_BO_NONCONTIG;
77
78                 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &gem_create);
79                 if (ret) {
80                         fprintf(stderr, "drv: DRM_IOCTL_EXYNOS_GEM_CREATE failed (size=%zu)\n",
81                                 size);
82                         goto cleanup_planes;
83                 }
84
85                 bo->handles[plane].u32 = gem_create.handle;
86         }
87
88         return 0;
89
90 cleanup_planes:
91         for (; plane != 0; plane--) {
92                 struct drm_gem_close gem_close;
93                 memset(&gem_close, 0, sizeof(gem_close));
94                 gem_close.handle = bo->handles[plane - 1].u32;
95                 int gem_close_ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
96                 if (gem_close_ret) {
97                         fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed: %d\n", gem_close_ret);
98                 }
99         }
100
101         return ret;
102 }
103
104 /*
105  * Use dumb mapping with exynos even though a GEM buffer is created.
106  * libdrm does the same thing in exynos_drm.c
107  */
108 struct backend backend_exynos = {
109         .name = "exynos",
110         .init = exynos_init,
111         .bo_create = exynos_bo_create,
112         .bo_destroy = drv_gem_bo_destroy,
113         .bo_import = drv_prime_bo_import,
114         .bo_map = drv_dumb_bo_map,
115 };
116
117 #endif