projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dea3101e | 1 | /******************************************************************* |
| 2 | * This file is part of the Emulex Linux Device Driver for * | |
| c44ce173 JSEC |
3 | * Fibre Channel Host Bus Adapters. * |
| 4 | * Copyright (C) 2004-2005 Emulex. All rights reserved. * | |
| 5 | * EMULEX and SLI are trademarks of Emulex. * | |
| dea3101e | 6 | * www.emulex.com * |
| 7 | * * | |
| 8 | * This program is free software; you can redistribute it and/or * | |
| c44ce173 JSEC |
9 | * modify it under the terms of version 2 of the GNU General * |
| 10 | * Public License as published by the Free Software Foundation. * | |
| 11 | * This program is distributed in the hope that it will be useful. * | |
| 12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
| 13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
| 15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
| 16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
| 17 | * more details, a copy of which can be found in the file COPYING * | |
| 18 | * included with this package. * | |
| dea3101e | 19 | *******************************************************************/ |
| 20 | ||
| 21 | /* | |
| dea3101e | 22 | * This file provides macros to aid compilation in the Linux 2.4 kernel |
| 23 | * over various platform architectures. | |
| 24 | */ | |
| 25 | ||
| 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 | *******************************************************************/ | |
| 33 | ||
| 34 | #if __BIG_ENDIAN | |
| 35 | ||
| 36 | static inline void | |
| 37 | lpfc_memcpy_to_slim(void __iomem *dest, void *src, unsigned int bytes) | |
| 38 | { | |
| 39 | uint32_t __iomem *dest32; | |
| 40 | uint32_t *src32; | |
| 41 | unsigned int four_bytes; | |
| 42 | ||
| 43 | ||
| 44 | dest32 = (uint32_t __iomem *) dest; | |
| 45 | src32 = (uint32_t *) src; | |
| 46 | ||
| 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 */ | |
| 51 | dest32++; | |
| 52 | src32++; | |
| 53 | } | |
| 54 | ||
| 55 | return; | |
| 56 | } | |
| 57 | ||
| 58 | static inline void | |
| 59 | lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes) | |
| 60 | { | |
| 61 | uint32_t *dest32; | |
| 62 | uint32_t __iomem *src32; | |
| 63 | unsigned int four_bytes; | |
| 64 | ||
| 65 | ||
| 66 | dest32 = (uint32_t *) dest; | |
| 67 | src32 = (uint32_t __iomem *) src; | |
| 68 | ||
| 69 | /* read input bytes, 4 bytes at a time */ | |
| 70 | for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) { | |
| 71 | *dest32 = readl( src32); | |
| 72 | dest32++; | |
| 73 | src32++; | |
| 74 | } | |
| 75 | ||
| 76 | return; | |
| 77 | } | |
| 78 | ||
| 79 | #else | |
| 80 | ||
| 81 | static inline void | |
| 82 | lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes) | |
| 83 | { | |
| 84 | /* actually returns 1 byte past dest */ | |
| 85 | memcpy_toio( dest, src, bytes); | |
| 86 | } | |
| 87 | ||
| 88 | static inline void | |
| 89 | lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes) | |
| 90 | { | |
| 91 | /* actually returns 1 byte past dest */ | |
| 92 | memcpy_fromio( dest, src, bytes); | |
| 93 | } | |
| 94 | ||
| 95 | #endif /* __BIG_ENDIAN */ |