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