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_XRGB161616, DRM_FORMAT_XBGR161616,
  28                                                           DRM_FORMAT_ABGR2101010 };
  29
  30 static const uint32_t private_source_formats[] = { DRM_FORMAT_P010, DRM_FORMAT_NV12_Y_TILED_INTEL };
  31
  32 #if !defined(DRM_CAP_CURSOR_WIDTH)
  33 #define DRM_CAP_CURSOR_WIDTH 0x8
  34 #endif
  35
  36 #if !defined(DRM_CAP_CURSOR_HEIGHT)
  37 #define DRM_CAP_CURSOR_HEIGHT 0x9
  38 #endif
  39
  40 static const uint32_t kDefaultCursorWidth = 64;
  41 static const uint32_t kDefaultCursorHeight = 64;
  42
  43 #define BO_USE_CAMERA_MASK BO_USE_CAMERA_READ | BO_USE_SCANOUT | BO_USE_CAMERA_WRITE
  44
  45 static void get_preferred_cursor_attributes(uint32_t drm_fd, uint64_t *cursor_width,
  46                                             uint64_t *cursor_height)
  47 {
  48         uint64_t width = 0, height = 0;
  49         if (drmGetCap(drm_fd, DRM_CAP_CURSOR_WIDTH, &width)) {
  50                 fprintf(stderr, "cannot get cursor width. \n");
  51         } else if (drmGetCap(drm_fd, DRM_CAP_CURSOR_HEIGHT, &height)) {
  52                 fprintf(stderr, "cannot get cursor height. \n");
  53         }
  54
  55         if (!width)
  56                 width = kDefaultCursorWidth;
  57
  58         *cursor_width = width;
  59
  60         if (!height)
  61                 height = kDefaultCursorHeight;
  62
  63         *cursor_height = height;
  64 }
  65
  66 int i915_private_init(struct driver *drv, uint64_t *cursor_width, uint64_t *cursor_height)
  67 {
  68         get_preferred_cursor_attributes(drv->fd, cursor_width, cursor_height);
  69         return 0;
  70 }
  71
  72 int i915_private_add_combinations(struct driver *drv)
  73 {
  74         struct format_metadata metadata;
  75         uint64_t render_flags, texture_flags;
  76
  77         render_flags = BO_USE_RENDER_MASK;
  78         texture_flags = BO_USE_TEXTURE_MASK;
  79
  80         metadata.tiling = I915_TILING_NONE;
  81         metadata.priority = 1;
  82         metadata.modifier = DRM_FORMAT_MOD_NONE;
  83
  84         drv_modify_combination(drv, DRM_FORMAT_ABGR8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
  85         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  86                                BO_USE_RENDERING | BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  87         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  88                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  89         drv_modify_combination(drv, DRM_FORMAT_VYUY, &metadata,
  90                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  91         drv_modify_combination(drv, DRM_FORMAT_UYVY, &metadata,
  92                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  93         drv_modify_combination(drv, DRM_FORMAT_YVYU, &metadata,
  94                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK | BO_USE_RENDERING);
  95         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata,
  96                                BO_USE_TEXTURE | BO_USE_CAMERA_MASK);
  97         drv_modify_combination(drv, DRM_FORMAT_RGB565, &metadata, BO_USE_CAMERA_MASK);
  98
  99         /* Media/Camera expect these formats support. */
 100         metadata.tiling = I915_TILING_NONE;
 101         metadata.priority = 1;
 102         metadata.modifier = DRM_FORMAT_MOD_NONE;
 103         drv_add_combinations(drv, private_linear_source_formats,
 104                              ARRAY_SIZE(private_linear_source_formats), &metadata,
 105                              texture_flags | BO_USE_CAMERA_MASK);
 106
 107         metadata.tiling = I915_TILING_Y;
 108         metadata.priority = 3;
 109         metadata.modifier = I915_FORMAT_MOD_Y_TILED;
 110         drv_add_combinations(drv, private_source_formats, ARRAY_SIZE(private_source_formats),
 111                              &metadata, texture_flags | BO_USE_CAMERA_MASK);
 112
 113         texture_flags &= ~BO_USE_RENDERSCRIPT;
 114         texture_flags &= ~BO_USE_SW_WRITE_OFTEN;
 115         texture_flags &= ~BO_USE_SW_READ_OFTEN;
 116         texture_flags &= ~BO_USE_LINEAR;
 117
 118         metadata.tiling = I915_TILING_X;
 119         metadata.priority = 2;
 120         metadata.modifier = I915_FORMAT_MOD_X_TILED;
 121
 122         int ret = drv_add_combinations(drv, private_linear_source_formats,
 123                                        ARRAY_SIZE(private_linear_source_formats), &metadata,
 124                                        texture_flags | BO_USE_CAMERA_MASK);
 125         if (ret)
 126                 return ret;
 127
 128         return 0;
 129 }
 130
 131 void i915_private_align_dimensions(uint32_t format, uint32_t *vertical_alignment)
 132 {
 133         switch (format) {
 134         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 135                 *vertical_alignment = 64;
 136                 break;
 137         }
 138 }
 139
 140 uint32_t i915_private_bpp_from_format(uint32_t format, size_t plane)
 141 {
 142         assert(plane < drv_num_planes_from_format(format));
 143
 144         switch (format) {
 145         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 146                 return (plane == 0) ? 8 : 4;
 147         case DRM_FORMAT_P010:
 148                 return (plane == 0) ? 16 : 8;
 149         case DRM_FORMAT_YUV420:
 150         case DRM_FORMAT_YUV422:
 151         case DRM_FORMAT_YUV444:
 152         case DRM_FORMAT_NV16:
 153                 return 8;
 154         case DRM_FORMAT_R16:
 155                 return 16;
 156         case DRM_FORMAT_XRGB161616:
 157         case DRM_FORMAT_XBGR161616:
 158                 return 64;
 159         case DRM_FORMAT_ABGR2101010:
 160                 return 32;
 161         }
 162
 163         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 164         return 0;
 165 }
 166
 167 void i915_private_vertical_subsampling_from_format(uint32_t *vertical_subsampling, uint32_t format,
 168                                                    size_t plane)
 169 {
 170         switch (format) {
 171         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 172         case DRM_FORMAT_YUV420:
 173         case DRM_FORMAT_P010:
 174                 *vertical_subsampling = (plane == 0) ? 1 : 2;
 175                 break;
 176         default:
 177                 *vertical_subsampling = 1;
 178         }
 179 }
 180
 181 size_t i915_private_num_planes_from_format(uint32_t format)
 182 {
 183         switch (format) {
 184         case DRM_FORMAT_R16:
 185         case DRM_FORMAT_XRGB161616:
 186         case DRM_FORMAT_XBGR161616:
 187         case DRM_FORMAT_ABGR2101010:
 188                 return 1;
 189         case DRM_FORMAT_NV12_Y_TILED_INTEL:
 190         case DRM_FORMAT_NV16:
 191         case DRM_FORMAT_P010:
 192                 return 2;
 193         case DRM_FORMAT_YUV420:
 194         case DRM_FORMAT_YUV422:
 195         case DRM_FORMAT_YUV444:
 196                 return 3;
 197         }
 198
 199         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 200         return 0;
 201 }
 202
 203 uint32_t i915_private_resolve_format(uint32_t format, uint64_t usage, uint32_t *resolved_format)
 204 {
 205         switch (format) {
 206         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 207                 /* KBL camera subsystem requires NV12. */
 208                 if (usage & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE)) {
 209                         *resolved_format = DRM_FORMAT_NV12;
 210                         return 1;
 211                 }
 212
 213                 if (usage & BO_USE_TEXTURE) {
 214                         *resolved_format = DRM_FORMAT_ABGR8888;
 215                         return 1;
 216                 }
 217         }
 218
 219         return 0;
 220 }
 221
 222 #endif