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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/scsi/lpfc/lpfc_compat.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_compat.h')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_compat.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_compat.h b/drivers/scsi/lpfc/lpfc_compat.h new file mode 100644 index 000000000..43cf46a3a --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_compat.h @@ -0,0 +1,98 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term * + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * + * Copyright (C) 2004-2011 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.broadcom.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) +{ + /* convert bytes in argument list to word count for copy function */ + __iowrite32_copy(dest, src, bytes / sizeof(uint32_t)); +} + +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 */ |