mirror of https://gitee.com/openkylin/linux.git
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
|
|
* I/O access functions for Hexagon
|
|
*
|
|
* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
|
|
/* These are all FIFO routines! */
|
|
|
|
/*
|
|
* __raw_readsw - read words a short at a time
|
|
* @addr: source address
|
|
* @data: data address
|
|
* @len: number of shorts to read
|
|
*/
|
|
void __raw_readsw(const void __iomem *addr, void *data, int len)
|
|
{
|
|
const volatile short int *src = (short int *) addr;
|
|
short int *dst = (short int *) data;
|
|
|
|
if ((u32)data & 0x1)
|
|
panic("unaligned pointer to readsw");
|
|
|
|
while (len-- > 0)
|
|
*dst++ = *src;
|
|
|
|
}
|
|
|
|
/*
|
|
* __raw_writesw - read words a short at a time
|
|
* @addr: source address
|
|
* @data: data address
|
|
* @len: number of shorts to read
|
|
*/
|
|
void __raw_writesw(void __iomem *addr, const void *data, int len)
|
|
{
|
|
const short int *src = (short int *)data;
|
|
volatile short int *dst = (short int *)addr;
|
|
|
|
if ((u32)data & 0x1)
|
|
panic("unaligned pointer to writesw");
|
|
|
|
while (len-- > 0)
|
|
*dst = *src++;
|
|
|
|
|
|
}
|
|
|
|
/* Pretty sure len is pre-adjusted for the length of the access already */
|
|
void __raw_readsl(const void __iomem *addr, void *data, int len)
|
|
{
|
|
const volatile long *src = (long *) addr;
|
|
long *dst = (long *) data;
|
|
|
|
if ((u32)data & 0x3)
|
|
panic("unaligned pointer to readsl");
|
|
|
|
while (len-- > 0)
|
|
*dst++ = *src;
|
|
|
|
|
|
}
|
|
|
|
void __raw_writesl(void __iomem *addr, const void *data, int len)
|
|
{
|
|
const long *src = (long *)data;
|
|
volatile long *dst = (long *)addr;
|
|
|
|
if ((u32)data & 0x3)
|
|
panic("unaligned pointer to writesl");
|
|
|
|
while (len-- > 0)
|
|
*dst = *src++;
|
|
|
|
|
|
}
|