mediatek.c

   1 /*
   2  * Copyright 2015 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_MEDIATEK
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <sys/mman.h>
  12 #include <xf86drm.h>
  13 #include <mediatek_drm.h>
  14
  15 #include "drv_priv.h"
  16 #include "helpers.h"
  17
  18 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height,
  19                               uint32_t format, uint32_t flags)
  20 {
  21         size_t size;
  22         struct drm_mtk_gem_create gem_create;
  23         int ret;
  24
  25         bo->strides[0] = drv_stride_from_format(format, width);
  26         size = height * bo->strides[0];
  27
  28         memset(&gem_create, 0, sizeof(gem_create));
  29         gem_create.size = size;
  30
  31         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
  32         if (ret) {
  33                 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed "
  34                                 "(size=%zu)\n", size);
  35                 return ret;
  36         }
  37
  38         bo->handles[0].u32 = gem_create.handle;
  39         bo->sizes[0] = size;
  40         bo->offsets[0] = 0;
  41
  42         return 0;
  43 }
  44
  45 static void *mediatek_bo_map(struct bo *bo)
  46 {
  47         int ret;
  48         struct drm_mtk_gem_map_off gem_map;
  49
  50         memset(&gem_map, 0, sizeof(gem_map));
  51         gem_map.handle = bo->handles[0].u32;
  52
  53         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
  54         if (ret) {
  55                 fprintf(stderr,"drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
  56                 return MAP_FAILED;
  57         }
  58
  59         return mmap(0, bo->sizes[0], PROT_READ | PROT_WRITE, MAP_SHARED,
  60                     bo->drv->fd, gem_map.offset);
  61 }
  62
  63 const struct backend backend_mediatek =
  64 {
  65         .name = "mediatek",
  66         .bo_create = mediatek_bo_create,
  67         .bo_destroy = drv_gem_bo_destroy,
  68         .bo_map = mediatek_bo_map,
  69         .format_list = {
  70                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  71                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  72                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  73                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  74                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  75                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  76                                       DRV_BO_USE_SW_WRITE_OFTEN},
  77                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  78                                       DRV_BO_USE_RENDERING | DRV_BO_USE_HW_TEXTURE |
  79                                       DRV_BO_USE_HW_RENDER | DRV_BO_USE_HW_2D |
  80                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
  81                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR |
  82                                       DRV_BO_USE_LINEAR | DRV_BO_USE_SW_READ_OFTEN |
  83                                       DRV_BO_USE_SW_WRITE_OFTEN},
  84         }
  85 };
  86
  87 #endif