helpers.c

   1 /*
   2  * Copyright (c) 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 #include <assert.h>
   8 #include <stdbool.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <xf86drm.h>
  13
  14 #include "drv_priv.h"
  15 #include "helpers.h"
  16 #include "util.h"
  17
  18 size_t drv_num_planes_from_format(uint32_t format)
  19 {
  20         switch(format)
  21         {
  22                 case DRV_FORMAT_C8:
  23                 case DRV_FORMAT_R8:
  24                 case DRV_FORMAT_RG88:
  25                 case DRV_FORMAT_GR88:
  26                 case DRV_FORMAT_RGB332:
  27                 case DRV_FORMAT_BGR233:
  28                 case DRV_FORMAT_XRGB4444:
  29                 case DRV_FORMAT_XBGR4444:
  30                 case DRV_FORMAT_RGBX4444:
  31                 case DRV_FORMAT_BGRX4444:
  32                 case DRV_FORMAT_ARGB4444:
  33                 case DRV_FORMAT_ABGR4444:
  34                 case DRV_FORMAT_RGBA4444:
  35                 case DRV_FORMAT_BGRA4444:
  36                 case DRV_FORMAT_XRGB1555:
  37                 case DRV_FORMAT_XBGR1555:
  38                 case DRV_FORMAT_RGBX5551:
  39                 case DRV_FORMAT_BGRX5551:
  40                 case DRV_FORMAT_ARGB1555:
  41                 case DRV_FORMAT_ABGR1555:
  42                 case DRV_FORMAT_RGBA5551:
  43                 case DRV_FORMAT_BGRA5551:
  44                 case DRV_FORMAT_RGB565:
  45                 case DRV_FORMAT_BGR565:
  46                 case DRV_FORMAT_YUYV:
  47                 case DRV_FORMAT_YVYU:
  48                 case DRV_FORMAT_UYVY:
  49                 case DRV_FORMAT_VYUY:
  50                 case DRV_FORMAT_RGB888:
  51                 case DRV_FORMAT_BGR888:
  52                 case DRV_FORMAT_XRGB8888:
  53                 case DRV_FORMAT_XBGR8888:
  54                 case DRV_FORMAT_RGBX8888:
  55                 case DRV_FORMAT_BGRX8888:
  56                 case DRV_FORMAT_ARGB8888:
  57                 case DRV_FORMAT_ABGR8888:
  58                 case DRV_FORMAT_RGBA8888:
  59                 case DRV_FORMAT_BGRA8888:
  60                 case DRV_FORMAT_XRGB2101010:
  61                 case DRV_FORMAT_XBGR2101010:
  62                 case DRV_FORMAT_RGBX1010102:
  63                 case DRV_FORMAT_BGRX1010102:
  64                 case DRV_FORMAT_ARGB2101010:
  65                 case DRV_FORMAT_ABGR2101010:
  66                 case DRV_FORMAT_RGBA1010102:
  67                 case DRV_FORMAT_BGRA1010102:
  68                 case DRV_FORMAT_AYUV:
  69                         return 1;
  70                 case DRV_FORMAT_NV12:
  71                         return 2;
  72         }
  73
  74         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
  75         return 0;
  76 }
  77
  78 int drv_bpp_from_format(uint32_t format)
  79 {
  80         switch(format)
  81         {
  82                 case DRV_FORMAT_C8:
  83                 case DRV_FORMAT_R8:
  84                 case DRV_FORMAT_RGB332:
  85                 case DRV_FORMAT_BGR233:
  86                         return 8;
  87
  88                 case DRV_FORMAT_NV12:
  89                         return 12;
  90
  91                 case DRV_FORMAT_RG88:
  92                 case DRV_FORMAT_GR88:
  93                 case DRV_FORMAT_XRGB4444:
  94                 case DRV_FORMAT_XBGR4444:
  95                 case DRV_FORMAT_RGBX4444:
  96                 case DRV_FORMAT_BGRX4444:
  97                 case DRV_FORMAT_ARGB4444:
  98                 case DRV_FORMAT_ABGR4444:
  99                 case DRV_FORMAT_RGBA4444:
 100                 case DRV_FORMAT_BGRA4444:
 101                 case DRV_FORMAT_XRGB1555:
 102                 case DRV_FORMAT_XBGR1555:
 103                 case DRV_FORMAT_RGBX5551:
 104                 case DRV_FORMAT_BGRX5551:
 105                 case DRV_FORMAT_ARGB1555:
 106                 case DRV_FORMAT_ABGR1555:
 107                 case DRV_FORMAT_RGBA5551:
 108                 case DRV_FORMAT_BGRA5551:
 109                 case DRV_FORMAT_RGB565:
 110                 case DRV_FORMAT_BGR565:
 111                 case DRV_FORMAT_YUYV:
 112                 case DRV_FORMAT_YVYU:
 113                 case DRV_FORMAT_UYVY:
 114                 case DRV_FORMAT_VYUY:
 115                         return 16;
 116
 117                 case DRV_FORMAT_RGB888:
 118                 case DRV_FORMAT_BGR888:
 119                         return 24;
 120
 121                 case DRV_FORMAT_XRGB8888:
 122                 case DRV_FORMAT_XBGR8888:
 123                 case DRV_FORMAT_RGBX8888:
 124                 case DRV_FORMAT_BGRX8888:
 125                 case DRV_FORMAT_ARGB8888:
 126                 case DRV_FORMAT_ABGR8888:
 127                 case DRV_FORMAT_RGBA8888:
 128                 case DRV_FORMAT_BGRA8888:
 129                 case DRV_FORMAT_XRGB2101010:
 130                 case DRV_FORMAT_XBGR2101010:
 131                 case DRV_FORMAT_RGBX1010102:
 132                 case DRV_FORMAT_BGRX1010102:
 133                 case DRV_FORMAT_ARGB2101010:
 134                 case DRV_FORMAT_ABGR2101010:
 135                 case DRV_FORMAT_RGBA1010102:
 136                 case DRV_FORMAT_BGRA1010102:
 137                 case DRV_FORMAT_AYUV:
 138                         return 32;
 139         }
 140
 141         fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format);
 142         return 0;
 143 }
 144
 145 int drv_stride_from_format(uint32_t format, uint32_t width)
 146 {
 147         /* Only single-plane formats are supported */
 148         assert(drv_num_planes_from_format(format) == 1);
 149         return DIV_ROUND_UP(width * drv_bpp_from_format(format), 8);
 150 }
 151
 152 int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height,
 153                        uint32_t format, uint32_t flags)
 154 {
 155         struct drm_mode_create_dumb create_dumb;
 156         int ret;
 157
 158         /* Only single-plane formats are supported */
 159         assert(drv_num_planes_from_format(format) == 1);
 160
 161         memset(&create_dumb, 0, sizeof(create_dumb));
 162         create_dumb.height = height;
 163         create_dumb.width = width;
 164         create_dumb.bpp = drv_bpp_from_format(format);
 165         create_dumb.flags = 0;
 166
 167         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
 168         if (ret) {
 169                 fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
 170                 return ret;
 171         }
 172
 173         bo->handles[0].u32 = create_dumb.handle;
 174         bo->offsets[0] = 0;
 175         bo->sizes[0] = create_dumb.size;
 176         bo->strides[0] = create_dumb.pitch;
 177
 178         return 0;
 179 }
 180
 181 int drv_dumb_bo_destroy(struct bo *bo)
 182 {
 183         struct drm_mode_destroy_dumb destroy_dumb;
 184         int ret;
 185
 186         memset(&destroy_dumb, 0, sizeof(destroy_dumb));
 187         destroy_dumb.handle = bo->handles[0].u32;
 188
 189         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
 190         if (ret) {
 191                 fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed "
 192                                 "(handle=%x)\n", bo->handles[0].u32);
 193                 return ret;
 194         }
 195
 196         return 0;
 197 }
 198
 199 int drv_gem_bo_destroy(struct bo *bo)
 200 {
 201         struct drm_gem_close gem_close;
 202         int ret, error = 0;
 203         size_t plane, i;
 204
 205         for (plane = 0; plane < bo->num_planes; plane++) {
 206                 for (i = 0; i < plane; i++)
 207                         if (bo->handles[i].u32 == bo->handles[plane].u32)
 208                                 break;
 209                 /* Make sure close hasn't already been called on this handle */
 210                 if (i != plane)
 211                         continue;
 212
 213                 memset(&gem_close, 0, sizeof(gem_close));
 214                 gem_close.handle = bo->handles[plane].u32;
 215
 216                 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 217                 if (ret) {
 218                         fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed "
 219                                         "(handle=%x) error %d\n",
 220                                         bo->handles[plane].u32, ret);
 221                         error = ret;
 222                 }
 223         }
 224
 225         return error;
 226 }
 227
 228 uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo,
 229                                   size_t plane)
 230 {
 231         void *count;
 232         uintptr_t num = 0;
 233
 234         if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count))
 235                 num = (uintptr_t) (count);
 236
 237         return num;
 238 }
 239
 240 void drv_increment_reference_count(struct driver *drv, struct bo *bo,
 241                                    size_t plane)
 242 {
 243         uintptr_t num = drv_get_reference_count(drv, bo, plane);
 244
 245         /* If a value isn't in the table, drmHashDelete is a no-op */
 246         drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
 247         drmHashInsert(drv->buffer_table, bo->handles[plane].u32,
 248                       (void *) (num + 1));
 249 }
 250
 251 void drv_decrement_reference_count(struct driver *drv, struct bo *bo,
 252                                    size_t plane)
 253 {
 254         uintptr_t num = drv_get_reference_count(drv, bo, plane);
 255
 256         drmHashDelete(drv->buffer_table, bo->handles[plane].u32);
 257
 258         if (num > 0)
 259                 drmHashInsert(drv->buffer_table, bo->handles[plane].u32,
 260                               (void *) (num - 1));
 261 }