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 #include <linux/types.h> 35 36 /* 37 * Memory regions for data placement. 38 */ 39 40 #define TTM_PL_SYSTEM 0 41 #define TTM_PL_TT 1 42 #define TTM_PL_VRAM 2 43 #define TTM_PL_PRIV 3 44 45 /* 46 * TTM_PL_FLAG_TOPDOWN requests to be placed from the 47 * top of the memory area, instead of the bottom. 48 */ 49 50 #define TTM_PL_FLAG_CONTIGUOUS (1 << 19) 51 #define TTM_PL_FLAG_TOPDOWN (1 << 22) 52 53 /** 54 * struct ttm_place 55 * 56 * @fpfn: first valid page frame number to put the object 57 * @lpfn: last valid page frame number to put the object 58 * @flags: memory domain and caching flags for the object 59 * 60 * Structure indicating a possible place to put an object. 61 */ 62 struct ttm_place { 63 unsigned fpfn; 64 unsigned lpfn; 65 uint32_t mem_type; 66 uint32_t flags; 67 }; 68 69 /** 70 * struct ttm_placement 71 * 72 * @num_placement: number of preferred placements 73 * @placement: preferred placements 74 * @num_busy_placement: number of preferred placements when need to evict buffer 75 * @busy_placement: preferred placements when need to evict buffer 76 * 77 * Structure indicating the placement you request for an object. 78 */ 79 struct ttm_placement { 80 unsigned num_placement; 81 const struct ttm_place *placement; 82 unsigned num_busy_placement; 83 const struct ttm_place *busy_placement; 84 }; 85 86 #endif 87