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/* -*- pse-c -*-
*-----------------------------------------------------------------------------
* Filename: memmap.h
* $Revision: 1.3 $
*-----------------------------------------------------------------------------
* Copyright © 2002-2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*-----------------------------------------------------------------------------
* Description:
* This file contains OS abstractions for memory mapping of bus addresses.
*-----------------------------------------------------------------------------
*/
#ifndef _OAL_IO_MEMMAP_H
#define _OAL_IO_MEMMAP_H
void * os_map_io_to_mem_cache(
unsigned long base_address,
unsigned long size);
void * os_map_io_to_mem_nocache(
unsigned long base_address,
unsigned long size);
void os_unmap_io_from_mem(
void * virt_addr,
unsigned long size);
/*****************************************************************************
* Function: os_map_io_to_mem_cache
*
* Description:
* This function will reserve a range of virtual memory space of "size" and
* map the that virtual address to the hardware "base_address" provided. This
* function call will enable caching of read write transactions to the region.
* Parameters:
* IN: base_address -> the base bus/hardware address that will be
* used as the target of the memory mapping.
* IN: size-> the size of the virtual memory range requested to
* be mapped
* Return Value:
* NULL for failure OR
* valid virtual address casted as a void *
*
****************************************************************************/
#define OS_MAP_IO_TO_MEM_CACHE(a, b) os_map_io_to_mem_cache(a, b)
/*****************************************************************************
* Function: os_map_io_to_mem_cache
*
* Description:
* This function will reserve a range of virtual memory space of "size" and
* map the that virtual address to the hardware "base_address" provided. This
* function call will NOT cache any read/write transactions to the region and
* apply the access directly to the hardware bus address that is mapped.
* Parameters:
* IN: base_address -> the base bus/hardware address that will be
* used as the target of the memory mapping.
* IN: size-> the size of the virtual memory range requested to
* be mapped
* Return Value:
* NULL for failure OR
* valid virtual address casted as a void *
*
****************************************************************************/
#define OS_MAP_IO_TO_MEM_NOCACHE(a, b) os_map_io_to_mem_nocache(a, b)
#define OS_MAP_IO_TO_LARGE_MEM_NOCACHE(a, b) os_map_io_to_mem_nocache(a, b)
/*****************************************************************************
* Function: os_map_io_to_mem_cache
*
* Description:
* This function will unmap the range of virtual memory space of "size" that
* was previously mapped with any of the above functions.
* Parameters:
* IN: virt_address -> the base bus or hardware address that will
* be used as the target of the memory
* mapping.
* IN: size-> the size of the virtual memory range as requested in
* os_map_io*
* Return Value:
* none (N/A)
*
****************************************************************************/
#define OS_UNMAP_IO_FROM_MEM(a, b) os_unmap_io_from_mem(a, b)
#endif
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