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/*
* tilermem.h
*
* Tiler Memory Interface functions for TI OMAP processors.
*
* Copyright (C) 2009-2011 Texas Instruments, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TILERMEM_H_
#define _TILERMEM_H_
/* retrieve type definitions */
#include "mem_types.h"
/**
* Tiler Memory Allocator is responsible for:
* <ol>
* <li>Getting the stride information for containers(???) or
* buffers
* <li>Converting virtual addresses to physical addresses.
* </ol>
*/
/**
* Returns the tiler stride corresponding to the system space
* address. For 2D buffers it returns the container stride. For
* 1D buffers it returns the page size. For non-tiler buffers
* it returns 0.
*
* @author a0194118 (9/1/2009)
*
* @param ptr pointer to a virtual address
*
* @return The stride of the block that contains the address.
*/
bytes_t TilerMem_GetStride(SSPtr ssptr);
/**
* Retrieves the physical system-space address that corresponds
* to the virtual address.
*
* @author a0194118 (9/1/2009)
*
* @param ptr pointer to a virtual address
*
* @return The physical system-space address that the virtual
* address refers to. If the virtual address is invalid
* or unmapped, it returns 0.
*/
SSPtr TilerMem_VirtToPhys(void *ptr);
#endif
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