96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/*******************************************************************
|
|
* This file is part of the Emulex Linux Device Driver for *
|
|
* Fibre Channel Host Bus Adapters. *
|
|
* Copyright (C) 2004-2005 Emulex. All rights reserved. *
|
|
* EMULEX and SLI are trademarks of Emulex. *
|
|
* www.emulex.com *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of version 2 of the GNU General *
|
|
* Public License as published by the Free Software Foundation. *
|
|
* This program is distributed in the hope that it will be useful. *
|
|
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
|
|
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
|
|
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
|
|
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
|
|
* TO BE LEGALLY INVALID. See the GNU General Public License for *
|
|
* more details, a copy of which can be found in the file COPYING *
|
|
* included with this package. *
|
|
*******************************************************************/
|
|
|
|
/*
|
|
* This file provides macros to aid compilation in the Linux 2.4 kernel
|
|
* over various platform architectures.
|
|
*/
|
|
|
|
/*******************************************************************
|
|
Note: HBA's SLI memory contains little-endian LW.
|
|
Thus to access it from a little-endian host,
|
|
memcpy_toio() and memcpy_fromio() can be used.
|
|
However on a big-endian host, copy 4 bytes at a time,
|
|
using writel() and readl().
|
|
*******************************************************************/
|
|
#include <asm/byteorder.h>
|
|
|
|
#ifdef __BIG_ENDIAN
|
|
|
|
static inline void
|
|
lpfc_memcpy_to_slim(void __iomem *dest, void *src, unsigned int bytes)
|
|
{
|
|
uint32_t __iomem *dest32;
|
|
uint32_t *src32;
|
|
unsigned int four_bytes;
|
|
|
|
|
|
dest32 = (uint32_t __iomem *) dest;
|
|
src32 = (uint32_t *) src;
|
|
|
|
/* write input bytes, 4 bytes at a time */
|
|
for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
|
|
writel( *src32, dest32);
|
|
readl(dest32); /* flush */
|
|
dest32++;
|
|
src32++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static inline void
|
|
lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
|
|
{
|
|
uint32_t *dest32;
|
|
uint32_t __iomem *src32;
|
|
unsigned int four_bytes;
|
|
|
|
|
|
dest32 = (uint32_t *) dest;
|
|
src32 = (uint32_t __iomem *) src;
|
|
|
|
/* read input bytes, 4 bytes at a time */
|
|
for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
|
|
*dest32 = readl( src32);
|
|
dest32++;
|
|
src32++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void
|
|
lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes)
|
|
{
|
|
__iowrite32_copy(dest, src, bytes);
|
|
}
|
|
|
|
static inline void
|
|
lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
|
|
{
|
|
/* actually returns 1 byte past dest */
|
|
memcpy_fromio( dest, src, bytes);
|
|
}
|
|
|
|
#endif /* __BIG_ENDIAN */
|