98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
|
/*******************************************************************
|
||
|
|
* This file is part of the Emulex Linux Device Driver for *
|
||
|
|
* Enterprise Fibre Channel Host Bus Adapters. *
|
||
|
|
* Refer to the README file included with this package for *
|
||
|
|
* driver version and adapter support. *
|
||
|
|
* Copyright (C) 2004 Emulex Corporation. *
|
||
|
|
* www.emulex.com *
|
||
|
|
* *
|
||
|
|
* This program is free software; you can redistribute it and/or *
|
||
|
|
* modify it under the terms of the GNU General Public License *
|
||
|
|
* as published by the Free Software Foundation; either version 2 *
|
||
|
|
* of the License, or (at your option) any later version. *
|
||
|
|
* *
|
||
|
|
* 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, a copy of which *
|
||
|
|
* can be found in the file COPYING included with this package. *
|
||
|
|
*******************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* $Id: lpfc_compat.h 1.32 2005/01/25 17:51:45EST sf_support Exp $
|
||
|
|
*
|
||
|
|
* 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().
|
||
|
|
*******************************************************************/
|
||
|
|
|
||
|
|
#if __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)
|
||
|
|
{
|
||
|
|
/* actually returns 1 byte past dest */
|
||
|
|
memcpy_toio( 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 */
|