rockchip.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_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 struct supported_combination combos[11] = {
  21         {DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE,
  22                 BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
  23                 BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  24         {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
  25                 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
  26         {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
  27                 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  28         {DRM_FORMAT_NV12, DRM_FORMAT_MOD_NONE,
  29                 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  30         {DRM_FORMAT_NV12, DRM_FORMAT_MOD_NONE,
  31                 BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
  32         {DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE,
  33                 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  34         {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
  35                 BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
  36                 BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  37         {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
  38                 BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
  39         {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
  40                 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
  41         {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
  42                 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  43         {DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE,
  44                 BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
  45 };
  46
  47 static int rockchip_init(struct driver *drv)
  48 {
  49         drv_insert_combinations(drv, combos, ARRAY_SIZE(combos));
  50         return drv_add_kms_flags(drv);
  51 }
  52
  53 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height,
  54                               uint32_t format, uint32_t flags)
  55 {
  56         int ret;
  57         size_t plane;
  58         struct drm_rockchip_gem_create gem_create;
  59
  60         if (format == DRM_FORMAT_NV12) {
  61                 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
  62                 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
  63
  64                 uint32_t aligned_width = w_mbs * 16;
  65                 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
  66
  67                 drv_bo_from_format(bo, aligned_width, height, format);
  68                 bo->total_size = bo->strides[0] * aligned_height
  69                                  + w_mbs * h_mbs * 128;
  70         } else {
  71                 drv_bo_from_format(bo, width, height, format);
  72         }
  73
  74         memset(&gem_create, 0, sizeof(gem_create));
  75         gem_create.size = bo->total_size;
  76
  77         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
  78                        &gem_create);
  79
  80         if (ret) {
  81                 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
  82                                 "(size=%llu)\n", gem_create.size);
  83                 return ret;
  84         }
  85
  86         for (plane = 0; plane < bo->num_planes; plane++)
  87                 bo->handles[plane].u32 = gem_create.handle;
  88
  89         return 0;
  90 }
  91
  92 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
  93 {
  94         int ret;
  95         struct drm_rockchip_gem_map_off gem_map;
  96
  97         memset(&gem_map, 0, sizeof(gem_map));
  98         gem_map.handle = bo->handles[0].u32;
  99
 100         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
 101                        &gem_map);
 102         if (ret) {
 103                 fprintf(stderr,
 104                         "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
 105                 return MAP_FAILED;
 106         }
 107
 108         data->length = bo->total_size;
 109
 110         return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
 111                     bo->drv->fd, gem_map.offset);
 112 }
 113
 114 static uint32_t rockchip_resolve_format(uint32_t format)
 115 {
 116         switch (format) {
 117         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 118                 /*HACK: See b/28671744 */
 119                 return DRM_FORMAT_XBGR8888;
 120         case DRM_FORMAT_FLEX_YCbCr_420_888:
 121                 return DRM_FORMAT_NV12;
 122         default:
 123                 return format;
 124         }
 125 }
 126
 127 struct backend backend_rockchip =
 128 {
 129         .name = "rockchip",
 130         .init = rockchip_init,
 131         .bo_create = rockchip_bo_create,
 132         .bo_destroy = drv_gem_bo_destroy,
 133         .bo_map = rockchip_bo_map,
 134         .resolve_format = rockchip_resolve_format,
 135 };
 136
 137 #endif