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/*
* drivers/video/tegra/nvmap_mru.c
*
* IOVMM virtualization support for nvmap
*
* Copyright (c) 2009-2010, NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __VIDEO_TEGRA_NVMAP_MRU_H
#define __VIDEO_TEGRA_NVMAP_MRU_H
#include <linux/spinlock.h>
#include "nvmap.h"
struct tegra_iovmm_area;
struct tegra_iovmm_client;
#ifdef CONFIG_NVMAP_RECLAIM_UNPINNED_VM
static inline void nvmap_mru_lock(struct nvmap_share *share)
{
spin_lock(&share->mru_lock);
}
static inline void nvmap_mru_unlock(struct nvmap_share *share)
{
spin_unlock(&share->mru_lock);
}
int nvmap_mru_init(struct nvmap_share *share);
void nvmap_mru_destroy(struct nvmap_share *share);
size_t nvmap_mru_vm_size(struct tegra_iovmm_client *iovmm);
void nvmap_mru_insert_locked(struct nvmap_share *share, struct nvmap_handle *h);
void nvmap_mru_remove(struct nvmap_share *s, struct nvmap_handle *h);
struct tegra_iovmm_area *nvmap_handle_iovmm(struct nvmap_client *c,
struct nvmap_handle *h);
#else
#define nvmap_mru_lock(_s) do { } while (0)
#define nvmap_mru_unlock(_s) do { } while (0)
#define nvmap_mru_init(_s) 0
#define nvmap_mru_destroy(_s) do { } while (0)
#define nvmap_mru_vm_size(_a) tegra_iovmm_get_vm_size(_a)
static inline void nvmap_mru_insert_locked(struct nvmap_share *share,
struct nvmap_handle *h)
{ }
static inline void nvmap_mru_remove(struct nvmap_share *s,
struct nvmap_handle *h)
{ }
static inline struct tegra_iovmm_area *nvmap_handle_iovmm(struct nvmap_client *c,
struct nvmap_handle *h)
{
BUG_ON(!h->pgalloc.area);
return h->pgalloc.area;
}
#endif
#endif
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