src/intel/isl/isl_drm.c

   1 /*
   2  * Copyright 2017 Intel Corporation
   3  *
   4  *  Permission is hereby granted, free of charge, to any person obtaining a
   5  *  copy of this software and associated documentation files (the "Software"),
   6  *  to deal in the Software without restriction, including without limitation
   7  *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  *  and/or sell copies of the Software, and to permit persons to whom the
   9  *  Software is furnished to do so, subject to the following conditions:
  10  *
  11  *  The above copyright notice and this permission notice (including the next
  12  *  paragraph) shall be included in all copies or substantial portions of the
  13  *  Software.
  14  *
  15  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  *  IN THE SOFTWARE.
  22  */
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26
  27 #include <drm_fourcc.h>
  28 #include <i915_drm.h>
  29
  30 #include "isl.h"
  31 #include "common/gen_device_info.h"
  32
  33 uint32_t
  34 isl_tiling_to_i915_tiling(enum isl_tiling tiling)
  35 {
  36    switch (tiling) {
  37    case ISL_TILING_LINEAR:
  38       return I915_TILING_NONE;
  39
  40    case ISL_TILING_X:
  41       return I915_TILING_X;
  42
  43    case ISL_TILING_Y0:
  44       return I915_TILING_Y;
  45
  46    case ISL_TILING_W:
  47    case ISL_TILING_Yf:
  48    case ISL_TILING_Ys:
  49    case ISL_TILING_HIZ:
  50    case ISL_TILING_CCS:
  51       return I915_TILING_NONE;
  52    }
  53
  54    unreachable("Invalid ISL tiling");
  55 }
  56
  57 enum isl_tiling
  58 isl_tiling_from_i915_tiling(uint32_t tiling)
  59 {
  60    switch (tiling) {
  61    case I915_TILING_NONE:
  62       return ISL_TILING_LINEAR;
  63
  64    case I915_TILING_X:
  65       return ISL_TILING_X;
  66
  67    case I915_TILING_Y:
  68       return ISL_TILING_Y0;
  69    }
  70
  71    unreachable("Invalid i915 tiling");
  72 }
  73
  74 static const struct isl_drm_modifier_info modifier_info[] = {
  75    {
  76       .modifier = DRM_FORMAT_MOD_NONE,
  77       .name = "DRM_FORMAT_MOD_NONE",
  78       .tiling = ISL_TILING_LINEAR,
  79    },
  80    {
  81       .modifier = I915_FORMAT_MOD_X_TILED,
  82       .name = "I915_FORMAT_MOD_X_TILED",
  83       .tiling = ISL_TILING_X,
  84    },
  85    {
  86       .modifier = I915_FORMAT_MOD_Y_TILED,
  87       .name = "I915_FORMAT_MOD_Y_TILED",
  88       .tiling = ISL_TILING_Y0,
  89    },
  90    {
  91       .modifier = I915_FORMAT_MOD_Y_TILED_CCS,
  92       .name = "I915_FORMAT_MOD_Y_TILED_CCS",
  93       .tiling = ISL_TILING_Y0,
  94       .aux_usage = ISL_AUX_USAGE_CCS_E,
  95       .supports_clear_color = false,
  96    },
  97 };
  98
  99 const struct isl_drm_modifier_info *
 100 isl_drm_modifier_get_info(uint64_t modifier)
 101 {
 102    for (unsigned i = 0; i < ARRAY_SIZE(modifier_info); i++) {
 103       if (modifier_info[i].modifier == modifier)
 104          return &modifier_info[i];
 105    }
 106
 107    return NULL;
 108 }