79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
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// 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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