include/drm/ttm/ttm_placement.h

   1 /**************************************************************************
   2  *
   3  * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 /*
  28  * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  29  */
  30
  31 #ifndef _TTM_PLACEMENT_H_
  32 #define _TTM_PLACEMENT_H_
  33 /*
  34  * Memory regions for data placement.
  35  */
  36
  37 #define TTM_PL_SYSTEM           0
  38 #define TTM_PL_TT               1
  39 #define TTM_PL_VRAM             2
  40 #define TTM_PL_PRIV0            3
  41 #define TTM_PL_PRIV1            4
  42 #define TTM_PL_PRIV2            5
  43 #define TTM_PL_PRIV3            6
  44 #define TTM_PL_PRIV4            7
  45 #define TTM_PL_PRIV5            8
  46 #define TTM_PL_SWAPPED          15
  47
  48 #define TTM_PL_FLAG_SYSTEM      (1 << TTM_PL_SYSTEM)
  49 #define TTM_PL_FLAG_TT          (1 << TTM_PL_TT)
  50 #define TTM_PL_FLAG_VRAM        (1 << TTM_PL_VRAM)
  51 #define TTM_PL_FLAG_PRIV0       (1 << TTM_PL_PRIV0)
  52 #define TTM_PL_FLAG_PRIV1       (1 << TTM_PL_PRIV1)
  53 #define TTM_PL_FLAG_PRIV2       (1 << TTM_PL_PRIV2)
  54 #define TTM_PL_FLAG_PRIV3       (1 << TTM_PL_PRIV3)
  55 #define TTM_PL_FLAG_PRIV4       (1 << TTM_PL_PRIV4)
  56 #define TTM_PL_FLAG_PRIV5       (1 << TTM_PL_PRIV5)
  57 #define TTM_PL_FLAG_SWAPPED     (1 << TTM_PL_SWAPPED)
  58 #define TTM_PL_MASK_MEM         0x0000FFFF
  59
  60 /*
  61  * Other flags that affects data placement.
  62  * TTM_PL_FLAG_CACHED indicates cache-coherent mappings
  63  * if available.
  64  * TTM_PL_FLAG_SHARED means that another application may
  65  * reference the buffer.
  66  * TTM_PL_FLAG_NO_EVICT means that the buffer may never
  67  * be evicted to make room for other buffers.
  68  * TTM_PL_FLAG_TOPDOWN requests to be placed from the
  69  * top of the memory area, instead of the bottom.
  70  */
  71
  72 #define TTM_PL_FLAG_CACHED      (1 << 16)
  73 #define TTM_PL_FLAG_UNCACHED    (1 << 17)
  74 #define TTM_PL_FLAG_WC          (1 << 18)
  75 #define TTM_PL_FLAG_SHARED      (1 << 20)
  76 #define TTM_PL_FLAG_NO_EVICT    (1 << 21)
  77 #define TTM_PL_FLAG_TOPDOWN     (1 << 22)
  78
  79 #define TTM_PL_MASK_CACHING     (TTM_PL_FLAG_CACHED | \
  80                                  TTM_PL_FLAG_UNCACHED | \
  81                                  TTM_PL_FLAG_WC)
  82
  83 #define TTM_PL_MASK_MEMTYPE     (TTM_PL_MASK_MEM | TTM_PL_MASK_CACHING)
  84
  85 /*
  86  * Access flags to be used for CPU- and GPU- mappings.
  87  * The idea is that the TTM synchronization mechanism will
  88  * allow concurrent READ access and exclusive write access.
  89  * Currently GPU- and CPU accesses are exclusive.
  90  */
  91
  92 #define TTM_ACCESS_READ         (1 << 0)
  93 #define TTM_ACCESS_WRITE        (1 << 1)
  94
  95 #endif