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1/*******************************************************************2 * This file is part of the Emulex Linux Device Driver for *3 * Fibre Channel Host Bus Adapters. *4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *6 * Copyright (C) 2004-2011 Emulex. All rights reserved. *7 * EMULEX and SLI are trademarks of Emulex. *8 * www.broadcom.com *9 * *10 * This program is free software; you can redistribute it and/or *11 * modify it under the terms of version 2 of the GNU General *12 * Public License as published by the Free Software Foundation. *13 * This program is distributed in the hope that it will be useful. *14 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *15 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *16 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *17 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *18 * TO BE LEGALLY INVALID. See the GNU General Public License for *19 * more details, a copy of which can be found in the file COPYING *20 * included with this package. *21 *******************************************************************/22 23/*24 * This file provides macros to aid compilation in the Linux 2.4 kernel25 * over various platform architectures.26 */27 28/*******************************************************************29Note: HBA's SLI memory contains little-endian LW.30Thus to access it from a little-endian host,31memcpy_toio() and memcpy_fromio() can be used.32However on a big-endian host, copy 4 bytes at a time,33using writel() and readl().34 *******************************************************************/35#include <asm/byteorder.h>36 37#ifdef __BIG_ENDIAN38 39static inline void40lpfc_memcpy_to_slim(void __iomem *dest, void *src, unsigned int bytes)41{42 uint32_t __iomem *dest32;43 uint32_t *src32;44 unsigned int four_bytes;45 46 47 dest32 = (uint32_t __iomem *) dest;48 src32 = (uint32_t *) src;49 50 /* write input bytes, 4 bytes at a time */51 for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {52 writel( *src32, dest32);53 readl(dest32); /* flush */54 dest32++;55 src32++;56 }57 58 return;59}60 61static inline void62lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)63{64 uint32_t *dest32;65 uint32_t __iomem *src32;66 unsigned int four_bytes;67 68 69 dest32 = (uint32_t *) dest;70 src32 = (uint32_t __iomem *) src;71 72 /* read input bytes, 4 bytes at a time */73 for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {74 *dest32 = readl( src32);75 dest32++;76 src32++;77 }78 79 return;80}81 82#else83 84static inline void85lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes)86{87 /* convert bytes in argument list to word count for copy function */88 __iowrite32_copy(dest, src, bytes / sizeof(uint32_t));89}90 91static inline void92lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)93{94 /* actually returns 1 byte past dest */95 memcpy_fromio( dest, src, bytes);96}97 98#endif /* __BIG_ENDIAN */99