rockchip.c

   1 /*
   2  * Copyright (c) 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_ROCKCHIP
   8
   9 #include <errno.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <sys/mman.h>
  13 #include <xf86drm.h>
  14 #include <rockchip_drm.h>
  15
  16 #include "drv_priv.h"
  17 #include "helpers.h"
  18 #include "util.h"
  19
  20 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height,
  21                               uint32_t format, uint32_t flags)
  22 {
  23         int ret;
  24         size_t plane;
  25         struct drm_rockchip_gem_create gem_create;
  26
  27         if (format == DRM_FORMAT_NV12) {
  28                 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
  29                 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
  30
  31                 uint32_t aligned_width = w_mbs * 16;
  32                 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
  33
  34                 drv_bo_from_format(bo, aligned_width, height, format);
  35                 bo->total_size = bo->strides[0] * aligned_height
  36                                  + w_mbs * h_mbs * 128;
  37         } else {
  38                 drv_bo_from_format(bo, width, height, format);
  39         }
  40
  41         memset(&gem_create, 0, sizeof(gem_create));
  42         gem_create.size = bo->total_size;
  43
  44         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
  45                        &gem_create);
  46
  47         if (ret) {
  48                 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
  49                                 "(size=%llu)\n", gem_create.size);
  50                 return ret;
  51         }
  52
  53         for (plane = 0; plane < bo->num_planes; plane++)
  54                 bo->handles[plane].u32 = gem_create.handle;
  55
  56         return 0;
  57 }
  58
  59 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
  60 {
  61         int ret;
  62         struct drm_rockchip_gem_map_off gem_map;
  63
  64         memset(&gem_map, 0, sizeof(gem_map));
  65         gem_map.handle = bo->handles[0].u32;
  66
  67         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
  68                        &gem_map);
  69         if (ret) {
  70                 fprintf(stderr,
  71                         "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
  72                 return MAP_FAILED;
  73         }
  74
  75         data->length = bo->total_size;
  76
  77         return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
  78                     bo->drv->fd, gem_map.offset);
  79 }
  80
  81 static uint32_t rockchip_resolve_format(uint32_t format)
  82 {
  83         switch (format) {
  84         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
  85                 /*HACK: See b/28671744 */
  86                 return DRM_FORMAT_XBGR8888;
  87         case DRM_FORMAT_FLEX_YCbCr_420_888:
  88                 return DRM_FORMAT_NV12;
  89         default:
  90                 return format;
  91         }
  92 }
  93
  94 const struct backend backend_rockchip =
  95 {
  96         .name = "rockchip",
  97         .bo_create = rockchip_bo_create,
  98         .bo_destroy = drv_gem_bo_destroy,
  99         .bo_map = rockchip_bo_map,
 100         .resolve_format = rockchip_resolve_format,
 101         .format_list = {
 102                 {DRM_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING
 103                                       | DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 104                 {DRM_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR |
 105                                       DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN},
 106                 {DRM_FORMAT_XBGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING
 107                                       | DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN
 108                                       | DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 109                 {DRM_FORMAT_XBGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR |
 110                                       DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN},
 111                 {DRM_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING
 112                                       | DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 113                 {DRM_FORMAT_RGB565,   DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING
 114                                       | DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 115                 {DRM_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR |
 116                                       DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN},
 117                 {DRM_FORMAT_ABGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING
 118                                       | DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN
 119                                       | DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 120                 {DRM_FORMAT_NV12,     DRV_BO_USE_SCANOUT | DRV_BO_USE_RENDERING |
 121                                       DRV_BO_USE_SW_READ_RARELY | DRV_BO_USE_SW_WRITE_RARELY},
 122                 {DRM_FORMAT_NV12,     DRV_BO_USE_SCANOUT | DRV_BO_USE_LINEAR |
 123                                       DRV_BO_USE_SW_READ_OFTEN | DRV_BO_USE_SW_WRITE_OFTEN},
 124                 {DRM_FORMAT_YVU420,   DRV_BO_USE_RENDERING | DRV_BO_USE_SW_READ_RARELY |
 125                                       DRV_BO_USE_SW_WRITE_RARELY},
 126         }
 127 };
 128
 129 #endif