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78 lines
1.5 KiB
78 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* I/O access functions for Hexagon |
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* |
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* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. |
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*/ |
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#include <asm/io.h> |
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/* These are all FIFO routines! */ |
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/* |
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* __raw_readsw - read words a short at a time |
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* @addr: source address |
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* @data: data address |
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* @len: number of shorts to read |
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*/ |
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void __raw_readsw(const void __iomem *addr, void *data, int len) |
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{ |
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const volatile short int *src = (short int *) addr; |
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short int *dst = (short int *) data; |
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if ((u32)data & 0x1) |
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panic("unaligned pointer to readsw"); |
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while (len-- > 0) |
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*dst++ = *src; |
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} |
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/* |
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* __raw_writesw - read words a short at a time |
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* @addr: source address |
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* @data: data address |
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* @len: number of shorts to read |
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*/ |
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void __raw_writesw(void __iomem *addr, const void *data, int len) |
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{ |
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const short int *src = (short int *)data; |
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volatile short int *dst = (short int *)addr; |
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if ((u32)data & 0x1) |
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panic("unaligned pointer to writesw"); |
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while (len-- > 0) |
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*dst = *src++; |
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} |
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/* Pretty sure len is pre-adjusted for the length of the access already */ |
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void __raw_readsl(const void __iomem *addr, void *data, int len) |
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{ |
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const volatile long *src = (long *) addr; |
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long *dst = (long *) data; |
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if ((u32)data & 0x3) |
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panic("unaligned pointer to readsl"); |
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while (len-- > 0) |
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*dst++ = *src; |
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} |
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void __raw_writesl(void __iomem *addr, const void *data, int len) |
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{ |
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const long *src = (long *)data; |
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volatile long *dst = (long *)addr; |
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if ((u32)data & 0x3) |
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panic("unaligned pointer to writesl"); |
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while (len-- > 0) |
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*dst = *src++; |
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}
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