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                                                           DRM_FORMAT_ABGR2101010 };
  28
  29 static const uint32_t private_source_formats[] = { DRM_FORMAT_P010, DRM_FORMAT_NV12_Y_TILED_INTEL };
  30
  31 #if !defined(DRM_CAP_CURSOR_WIDTH)
  32 #define DRM_CAP_CURSOR_WIDTH 0x8
  33 #endif
  34
  35 #if !defined(DRM_CAP_CURSOR_HEIGHT)
  36 #define DRM_CAP_CURSOR_HEIGHT 0x9
  37 #endif
  38
  39 static const uint32_t kDefaultCursorWidth = 64;
  40 static const uint32_t kDefaultCursorHeight = 64;
  41
  42 #define BO_USE_CAMERA_MASK BO_USE_CAMERA_READ | BO_USE_SCANOUT | BO_USE_CAMERA_WRITE
  43
  44 static void get_preferred_cursor_attributes(uint32_t drm_fd, uint64_t *cursor_width,
  45                                             uint64_t *cursor_height)
  46 {
  47         uint64_t width = 0, height = 0;
  48         if (drmGetCap(drm_fd, DRM_CAP_CURSOR_WIDTH, &width)) {
  49                 fprintf(stderr, "cannot get cursor width. \n");
  50         } else if (drmGetCap(drm_fd, DRM_CAP_CURSOR_HEIGHT, &height)) {
  51                 fprintf(stderr, "cannot get cursor height. \n");
  52         }
  53
  54         if (!width)
  55                 width = kDefaultCursorWidth;
  56
  57         *cursor_width = width;
  58
  59         if (!height)
  60                 height = kDefaultCursorHeight;
  61
  62         *cursor_height = height;
  63 }
  64
  65 int i915_private_init(struct driver *drv, uint64_t *cursor_width, uint64_t *cursor_height)
  66 {
  67         get_preferred_cursor_attributes(drv->fd, cursor_width, cursor_height);
  68         return 0;
  69 }
  70
  71 int i915_private_add_combinations(struct driver *drv)
  72 {
  73         struct format_metadata metadata;
  74         uint64_t render_flags, texture_flags;
  75
  76         render_flags = BO_USE_RENDER_MASK;
  77         texture_flags = BO_USE_TEXTURE_MASK;
  78
  79         metadata.tiling = I915_TILING_NONE;
  80         metadata.priority = 1;
  81         metadata.modifier = DRM_FORMAT_MOD_NONE;
  82
  83         drv_modify_combination(drv, DRM_FORMAT_ABGR8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
  84         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  85                                BO_USE_RENDERING | BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  86         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  87                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  88         drv_modify_combination(drv, DRM_FORMAT_VYUY, &metadata,
  89                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  90         drv_modify_combination(drv, DRM_FORMAT_UYVY, &metadata,
  91                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  92         drv_modify_combination(drv, DRM_FORMAT_YVYU, &metadata,
  93                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  94         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata,
  95                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  96         drv_modify_combination(drv, DRM_FORMAT_RGB565, &metadata, BO_USE_CAMERA_MASK);
  97
  98         /* Media/Camera expect these formats support. */
  99         metadata.tiling = I915_TILING_NONE;
 100         metadata.priority = 1;
 101         metadata.modifier = DRM_FORMAT_MOD_NONE;
 102         drv_add_combinations(drv, private_linear_source_formats,
 103                              ARRAY_SIZE(private_linear_source_formats), &metadata,
 104                              texture_flags | BO_USE_CAMERA_MASK);
 105
 106         metadata.tiling = I915_TILING_Y;
 107         metadata.priority = 3;
 108         metadata.modifier = I915_FORMAT_MOD_Y_TILED;
 109         drv_add_combinations(drv, private_source_formats, ARRAY_SIZE(private_source_formats),
 110                              &metadata, texture_flags | BO_USE_CAMERA_MASK);
 111
 112         texture_flags &= ~BO_USE_RENDERSCRIPT;
 113         texture_flags &= ~BO_USE_SW_WRITE_OFTEN;
 114         texture_flags &= ~BO_USE_SW_READ_OFTEN;
 115         texture_flags &= ~BO_USE_LINEAR;
 116
 117         metadata.tiling = I915_TILING_X;
 118         metadata.priority = 2;
 119         metadata.modifier = I915_FORMAT_MOD_X_TILED;
 120
 121         int ret = drv_add_combinations(drv, private_linear_source_formats,
 122                                        ARRAY_SIZE(private_linear_source_formats), &metadata,
 123                                        texture_flags | BO_USE_CAMERA_MASK);
 124         if (ret)
 125                 return ret;
 126
 127         return 0;
 128 }
 129
 130 void i915_private_align_dimensions(uint32_t format, uint32_t *vertical_alignment)
 131 {
 132         switch (format) {
 133         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 134                 *vertical_alignment = 64;
 135                 break;
 136         }
 137 }
 138
 139 uint32_t i915_private_bpp_from_format(uint32_t format, size_t plane)
 140 {
 141         assert(plane < drv_num_planes_from_format(format));
 142
 143         switch (format) {
 144         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 145                 return (plane == 0) ? 8 : 4;
 146         case DRM_FORMAT_P010:
 147                 return (plane == 0) ? 16 : 8;
 148         case DRM_FORMAT_YUV420:
 149         case DRM_FORMAT_YUV422:
 150         case DRM_FORMAT_YUV444:
 151         case DRM_FORMAT_NV16:
 152                 return 8;
 153         case DRM_FORMAT_R16:
 154                 return 16;
 155         case DRM_FORMAT_ABGR2101010:
 156                 return 32;
 157         }
 158
 159         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 160         return 0;
 161 }
 162
 163 void i915_private_vertical_subsampling_from_format(uint32_t *vertical_subsampling, uint32_t format,
 164                                                    size_t plane)
 165 {
 166         switch (format) {
 167         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 168         case DRM_FORMAT_YUV420:
 169         case DRM_FORMAT_P010:
 170                 *vertical_subsampling = (plane == 0) ? 1 : 2;
 171                 break;
 172         default:
 173                 *vertical_subsampling = 1;
 174         }
 175 }
 176
 177 size_t i915_private_num_planes_from_format(uint32_t format)
 178 {
 179         switch (format) {
 180         case DRM_FORMAT_R16:
 181         case DRM_FORMAT_ABGR2101010:
 182                 return 1;
 183         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 184         case DRM_FORMAT_NV16:
 185         case DRM_FORMAT_P010:
 186                 return 2;
 187         case DRM_FORMAT_YUV420:
 188         case DRM_FORMAT_YUV422:
 189         case DRM_FORMAT_YUV444:
 190                 return 3;
 191         }
 192
 193         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 194         return 0;
 195 }
 196
 197 uint32_t i915_private_resolve_format(uint32_t format, uint64_t usage, uint32_t *resolved_format)
 198 {
 199         switch (format) {
 200         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 201                 /* KBL camera subsystem requires NV12. */
 202                 if (usage & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE)) {
 203                         *resolved_format = DRM_FORMAT_NV12;
 204                         return 1;
 205                 }
 206
 207                 if (usage & BO_USE_TEXTURE) {
 208                         *resolved_format = DRM_FORMAT_ABGR8888;
 209                         return 1;
 210                 }
 211         }
 212
 213         return 0;
 214 }
 215
 216 #endif