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/*
* tmm.h
*
* TMM interface definition for TI TILER driver.
*
* Author: Lajos Molnar <molnar@ti.com>
*
* Copyright (C) 2009-2010 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef TMM_H
#define TMM_H
#include <mach/dmm.h>
/**
* TMM interface
*/
struct tmm {
void *pvt;
/* function table */
u32 *(*get) (struct tmm *tmm, u32 num_pages);
void (*free) (struct tmm *tmm, u32 *pages);
s32 (*map) (struct tmm *tmm, struct pat_area area, u32 page_pa);
void (*clear) (struct tmm *tmm, struct pat_area area);
void (*deinit) (struct tmm *tmm);
};
/**
* Request a set of pages from the DMM free page stack.
* @return a pointer to a list of physical page addresses.
*/
static inline
u32 *tmm_get(struct tmm *tmm, u32 num_pages)
{
if (tmm && tmm->pvt)
return tmm->get(tmm, num_pages);
return NULL;
}
/**
* Return a set of used pages to the DMM free page stack.
* @param list a pointer to a list of physical page addresses.
*/
static inline
void tmm_free(struct tmm *tmm, u32 *pages)
{
if (tmm && tmm->pvt)
tmm->free(tmm, pages);
}
/**
* Program the physical address translator.
* @param area PAT area
* @param list of pages
*/
static inline
s32 tmm_map(struct tmm *tmm, struct pat_area area, u32 page_pa)
{
if (tmm && tmm->map && tmm->pvt)
return tmm->map(tmm, area, page_pa);
return -ENODEV;
}
/**
* Clears the physical address translator.
* @param area PAT area
*/
static inline
void tmm_clear(struct tmm *tmm, struct pat_area area)
{
if (tmm && tmm->clear && tmm->pvt)
tmm->clear(tmm, area);
}
/**
* Checks whether tiler memory manager supports mapping
*/
static inline
bool tmm_can_map(struct tmm *tmm)
{
return tmm && tmm->map;
}
/**
* Deinitialize tiler memory manager
*/
static inline
void tmm_deinit(struct tmm *tmm)
{
if (tmm && tmm->pvt)
tmm->deinit(tmm);
}
/**
* TMM implementation for PAT support.
*
* Initialize TMM for PAT with given id.
*/
struct tmm *tmm_pat_init(u32 pat_id);
#endif
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