i915_private.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_I915
   8
   9 #include <assert.h>
  10 #include <errno.h>
  11 #include <i915_drm.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <sys/mman.h>
  15 #include <drm_fourcc.h>
  16 #include <xf86drm.h>
  17
  18 #include "drv_priv.h"
  19 #include "helpers.h"
  20 #include "util.h"
  21 #include "i915_private.h"
  22
  23 static const uint32_t private_linear_source_formats[] = { DRM_FORMAT_R16,    DRM_FORMAT_NV16,
  24                                                           DRM_FORMAT_YUV420, DRM_FORMAT_YUV422,
  25                                                           DRM_FORMAT_YUV444, DRM_FORMAT_NV21,
  26                                                           DRM_FORMAT_P010, DRM_FORMAT_RGB888, DRM_FORMAT_BGR888 };
  27
  28 static const uint32_t private_source_formats[] = { DRM_FORMAT_P010, DRM_FORMAT_NV12_Y_TILED_INTEL };
  29
  30 #if !defined(DRM_CAP_CURSOR_WIDTH)
  31 #define DRM_CAP_CURSOR_WIDTH 0x8
  32 #endif
  33
  34 #if !defined(DRM_CAP_CURSOR_HEIGHT)
  35 #define DRM_CAP_CURSOR_HEIGHT 0x9
  36 #endif
  37
  38 static const uint32_t kDefaultCursorWidth = 64;
  39 static const uint32_t kDefaultCursorHeight = 64;
  40
  41 #define BO_USE_CAMERA_MASK BO_USE_CAMERA_READ | BO_USE_SCANOUT | BO_USE_CAMERA_WRITE
  42
  43 static void get_preferred_cursor_attributes(uint32_t drm_fd, uint64_t *cursor_width,
  44                                             uint64_t *cursor_height)
  45 {
  46         uint64_t width = 0, height = 0;
  47         if (drmGetCap(drm_fd, DRM_CAP_CURSOR_WIDTH, &width)) {
  48                 fprintf(stderr, "cannot get cursor width. \n");
  49         } else if (drmGetCap(drm_fd, DRM_CAP_CURSOR_HEIGHT, &height)) {
  50                 fprintf(stderr, "cannot get cursor height. \n");
  51         }
  52
  53         if (!width)
  54                 width = kDefaultCursorWidth;
  55
  56         *cursor_width = width;
  57
  58         if (!height)
  59                 height = kDefaultCursorHeight;
  60
  61         *cursor_height = height;
  62 }
  63
  64 int i915_private_init(struct driver *drv, uint64_t *cursor_width, uint64_t *cursor_height)
  65 {
  66         get_preferred_cursor_attributes(drv->fd, cursor_width, cursor_height);
  67         return 0;
  68 }
  69
  70 int i915_private_add_combinations(struct driver *drv)
  71 {
  72         struct format_metadata metadata;
  73         uint64_t render_flags, texture_flags;
  74
  75         render_flags = BO_USE_RENDER_MASK;
  76         texture_flags = BO_USE_TEXTURE_MASK;
  77
  78         metadata.tiling = I915_TILING_NONE;
  79         metadata.priority = 1;
  80         metadata.modifier = DRM_FORMAT_MOD_NONE;
  81
  82         drv_modify_combination(drv, DRM_FORMAT_ABGR8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
  83         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  84                                BO_USE_RENDERING | BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  85         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  86                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  87         drv_modify_combination(drv, DRM_FORMAT_VYUY, &metadata,
  88                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  89         drv_modify_combination(drv, DRM_FORMAT_UYVY, &metadata,
  90                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  91         drv_modify_combination(drv, DRM_FORMAT_YVYU, &metadata,
  92                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  93         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata,
  94                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  95
  96         /* Media/Camera expect these formats support. */
  97         metadata.tiling = I915_TILING_NONE;
  98         metadata.priority = 1;
  99         metadata.modifier = DRM_FORMAT_MOD_NONE;
 100         drv_add_combinations(drv, private_linear_source_formats,
 101                              ARRAY_SIZE(private_linear_source_formats), &metadata,
 102                              texture_flags | BO_USE_CAMERA_MASK);
 103
 104         metadata.tiling = I915_TILING_Y;
 105         metadata.priority = 3;
 106         metadata.modifier = I915_FORMAT_MOD_Y_TILED;
 107         drv_add_combinations(drv, private_source_formats, ARRAY_SIZE(private_source_formats),
 108                              &metadata, texture_flags | BO_USE_CAMERA_MASK);
 109
 110         texture_flags &= ~BO_USE_RENDERSCRIPT;
 111         texture_flags &= ~BO_USE_SW_WRITE_OFTEN;
 112         texture_flags &= ~BO_USE_SW_READ_OFTEN;
 113         texture_flags &= ~BO_USE_LINEAR;
 114
 115         metadata.tiling = I915_TILING_X;
 116         metadata.priority = 2;
 117         metadata.modifier = I915_FORMAT_MOD_X_TILED;
 118
 119         int ret = drv_add_combinations(drv, private_linear_source_formats,
 120                                        ARRAY_SIZE(private_linear_source_formats), &metadata,
 121                                        texture_flags | BO_USE_CAMERA_MASK);
 122         if (ret)
 123                 return ret;
 124
 125         return 0;
 126 }
 127
 128 void i915_private_align_dimensions(uint32_t format, uint32_t *vertical_alignment)
 129 {
 130         switch (format) {
 131         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 132                 *vertical_alignment = 64;
 133                 break;
 134         }
 135 }
 136
 137 uint32_t i915_private_bpp_from_format(uint32_t format, size_t plane)
 138 {
 139         assert(plane < drv_num_planes_from_format(format));
 140
 141         switch (format) {
 142         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 143                 return (plane == 0) ? 8 : 4;
 144         case DRM_FORMAT_P010:
 145                 return (plane == 0) ? 16 : 8;
 146         case DRM_FORMAT_YUV420:
 147         case DRM_FORMAT_YUV422:
 148         case DRM_FORMAT_YUV444:
 149         case DRM_FORMAT_NV16:
 150                 return 8;
 151         case DRM_FORMAT_R16:
 152                 return 16;
 153         }
 154
 155         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 156         return 0;
 157 }
 158
 159 void i915_private_vertical_subsampling_from_format(uint32_t *vertical_subsampling, uint32_t format,
 160                                                    size_t plane)
 161 {
 162         switch (format) {
 163         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 164         case DRM_FORMAT_YUV420:
 165         case DRM_FORMAT_P010:
 166                 *vertical_subsampling = (plane == 0) ? 1 : 2;
 167                 break;
 168         default:
 169                 *vertical_subsampling = 1;
 170         }
 171 }
 172
 173 size_t i915_private_num_planes_from_format(uint32_t format)
 174 {
 175         switch (format) {
 176         case DRM_FORMAT_R16:
 177                 return 1;
 178         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 179         case DRM_FORMAT_NV16:
 180         case DRM_FORMAT_P010:
 181                 return 2;
 182         case DRM_FORMAT_YUV420:
 183         case DRM_FORMAT_YUV422:
 184         case DRM_FORMAT_YUV444:
 185                 return 3;
 186         }
 187
 188         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 189         return 0;
 190 }
 191
 192 uint32_t i915_private_resolve_format(uint32_t format, uint64_t usage, uint32_t *resolved_format)
 193 {
 194         switch (format) {
 195         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 196                 /* KBL camera subsystem requires NV12. */
 197                 if (usage & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE)) {
 198                         *resolved_format = DRM_FORMAT_NV12;
 199                         return 1;
 200                 }
 201
 202                 if (usage & BO_USE_TEXTURE) {
 203                         *resolved_format = DRM_FORMAT_ABGR8888;
 204                         return 1;
 205                 }
 206         }
 207
 208         return 0;
 209 }
 210
 211 #endif