90 строки
2.8 KiB
C
90 строки
2.8 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
|
|
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
* USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
**************************************************************************/
|
|
/*
|
|
* Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
|
|
*/
|
|
|
|
#ifndef _TTM_PLACEMENT_H_
|
|
#define _TTM_PLACEMENT_H_
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* Memory regions for data placement.
|
|
*/
|
|
|
|
#define TTM_PL_SYSTEM 0
|
|
#define TTM_PL_TT 1
|
|
#define TTM_PL_VRAM 2
|
|
#define TTM_PL_PRIV 3
|
|
|
|
/*
|
|
* TTM_PL_FLAG_TOPDOWN requests to be placed from the
|
|
* top of the memory area, instead of the bottom.
|
|
*/
|
|
|
|
#define TTM_PL_FLAG_CONTIGUOUS (1 << 0)
|
|
#define TTM_PL_FLAG_TOPDOWN (1 << 1)
|
|
|
|
/* For multihop handling */
|
|
#define TTM_PL_FLAG_TEMPORARY (1 << 2)
|
|
|
|
/**
|
|
* struct ttm_place
|
|
*
|
|
* @fpfn: first valid page frame number to put the object
|
|
* @lpfn: last valid page frame number to put the object
|
|
* @flags: memory domain and caching flags for the object
|
|
*
|
|
* Structure indicating a possible place to put an object.
|
|
*/
|
|
struct ttm_place {
|
|
unsigned fpfn;
|
|
unsigned lpfn;
|
|
uint32_t mem_type;
|
|
uint32_t flags;
|
|
};
|
|
|
|
/**
|
|
* struct ttm_placement
|
|
*
|
|
* @num_placement: number of preferred placements
|
|
* @placement: preferred placements
|
|
* @num_busy_placement: number of preferred placements when need to evict buffer
|
|
* @busy_placement: preferred placements when need to evict buffer
|
|
*
|
|
* Structure indicating the placement you request for an object.
|
|
*/
|
|
struct ttm_placement {
|
|
unsigned num_placement;
|
|
const struct ttm_place *placement;
|
|
unsigned num_busy_placement;
|
|
const struct ttm_place *busy_placement;
|
|
};
|
|
|
|
#endif
|