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minigbm: cros_gralloc: remove constexpr functions
[android-x86/external-minigbm.git] / vc4.c
1 /*
2  * Copyright 2017 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_VC4
8
9 #include <stdio.h>
10 #include <string.h>
11 #include <sys/mman.h>
12 #include <vc4_drm.h>
13 #include <xf86drm.h>
14
15 #include "drv_priv.h"
16 #include "helpers.h"
17 #include "util.h"
18
19 static const uint32_t supported_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
20                                               DRM_FORMAT_XRGB8888 };
21
22 static int vc4_init(struct driver *drv)
23 {
24         return drv_add_linear_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats));
25 }
26
27 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
28                          uint32_t flags)
29 {
30         int ret;
31         size_t plane;
32         uint32_t stride;
33         struct drm_vc4_create_bo bo_create;
34
35         /*
36          * Since the ARM L1 cache line size is 64 bytes, align to that as a
37          * performance optimization.
38          */
39         stride = drv_stride_from_format(format, width, 0);
40         stride = ALIGN(stride, 64);
41         drv_bo_from_format(bo, stride, height, format);
42
43         memset(&bo_create, 0, sizeof(bo_create));
44         bo_create.size = bo->total_size;
45
46         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
47         if (ret) {
48                 fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n",
49                         bo->total_size);
50                 return ret;
51         }
52
53         for (plane = 0; plane < bo->num_planes; plane++)
54                 bo->handles[plane].u32 = bo_create.handle;
55
56         return 0;
57 }
58
59 static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane)
60 {
61         int ret;
62         struct drm_vc4_mmap_bo bo_map;
63
64         memset(&bo_map, 0, sizeof(bo_map));
65         bo_map.handle = bo->handles[0].u32;
66
67         ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
68         if (ret) {
69                 fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n");
70                 return MAP_FAILED;
71         }
72
73         data->length = bo->total_size;
74
75         return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
76                     bo_map.offset);
77 }
78
79 struct backend backend_vc4 = {
80         .name = "vc4",
81         .init = vc4_init,
82         .bo_create = vc4_bo_create,
83         .bo_import = drv_prime_bo_import,
84         .bo_destroy = drv_gem_bo_destroy,
85         .bo_map = vc4_bo_map,
86 };
87
88 #endif