1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Enterprise Fibre Channel Host Bus Adapters. *
4 * Refer to the README file included with this package for *
5 * driver version and adapter support. *
6 * Copyright (C) 2004 Emulex Corporation. *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of the GNU General Public License *
11 * as published by the Free Software Foundation; either version 2 *
12 * of the License, or (at your option) any later version. *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details, a copy of which *
18 * can be found in the file COPYING included with this package. *
19 *******************************************************************/
22 * This file provides macros to aid compilation in the Linux 2.4 kernel
23 * over various platform architectures.
26 /*******************************************************************
27 Note: HBA's SLI memory contains little-endian LW.
28 Thus to access it from a little-endian host,
29 memcpy_toio() and memcpy_fromio() can be used.
30 However on a big-endian host, copy 4 bytes at a time,
31 using writel() and readl().
32 *******************************************************************/
37 lpfc_memcpy_to_slim(void __iomem *dest, void *src, unsigned int bytes)
39 uint32_t __iomem *dest32;
41 unsigned int four_bytes;
44 dest32 = (uint32_t __iomem *) dest;
45 src32 = (uint32_t *) src;
47 /* write input bytes, 4 bytes at a time */
48 for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
49 writel( *src32, dest32);
50 readl(dest32); /* flush */
59 lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
62 uint32_t __iomem *src32;
63 unsigned int four_bytes;
66 dest32 = (uint32_t *) dest;
67 src32 = (uint32_t __iomem *) src;
69 /* read input bytes, 4 bytes at a time */
70 for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
71 *dest32 = readl( src32);
82 lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes)
84 /* actually returns 1 byte past dest */
85 memcpy_toio( dest, src, bytes);
89 lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
91 /* actually returns 1 byte past dest */
92 memcpy_fromio( dest, src, bytes);
95 #endif /* __BIG_ENDIAN */