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Merge 'aosp/upstream-master' into 'aosp/master' am: 24cb462579
[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 <errno.h>
10 #include <stdio.h>
11 #include <string.h>
12 #include <sys/mman.h>
13 #include <vc4_drm.h>
14 #include <xf86drm.h>
15
16 #include "drv_priv.h"
17 #include "helpers.h"
18 #include "util.h"
19
20 static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
21                                                   DRM_FORMAT_XRGB8888 };
22
23 static int vc4_init(struct driver *drv)
24 {
25         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
26                              &LINEAR_METADATA, BO_USE_RENDER_MASK);
27
28         return drv_modify_linear_combinations(drv);
29 }
30
31 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
32                          uint64_t use_flags)
33 {
34         int ret;
35         size_t plane;
36         uint32_t stride;
37         struct drm_vc4_create_bo bo_create;
38
39         /*
40          * Since the ARM L1 cache line size is 64 bytes, align to that as a
41          * performance optimization.
42          */
43         stride = drv_stride_from_format(format, width, 0);
44         stride = ALIGN(stride, 64);
45         drv_bo_from_format(bo, stride, height, format);
46
47         memset(&bo_create, 0, sizeof(bo_create));
48         bo_create.size = bo->meta.total_size;
49
50         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
51         if (ret) {
52                 drv_log("DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n", bo->meta.total_size);
53                 return -errno;
54         }
55
56         for (plane = 0; plane < bo->meta.num_planes; plane++)
57                 bo->handles[plane].u32 = bo_create.handle;
58
59         return 0;
60 }
61
62 static void *vc4_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
63 {
64         int ret;
65         struct drm_vc4_mmap_bo bo_map;
66
67         memset(&bo_map, 0, sizeof(bo_map));
68         bo_map.handle = bo->handles[0].u32;
69
70         ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
71         if (ret) {
72                 drv_log("DRM_VC4_MMAP_BO failed\n");
73                 return MAP_FAILED;
74         }
75
76         vma->length = bo->meta.total_size;
77         return mmap(NULL, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
78                     bo_map.offset);
79 }
80
81 const struct backend backend_vc4 = {
82         .name = "vc4",
83         .init = vc4_init,
84         .bo_create = vc4_bo_create,
85         .bo_import = drv_prime_bo_import,
86         .bo_destroy = drv_gem_bo_destroy,
87         .bo_map = vc4_bo_map,
88         .bo_unmap = drv_bo_munmap,
89 };
90
91 #endif