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https://github.com/torvalds/linux
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37b7a97884
This takes a bit of a sledgehammer to the machvec I/O routines. The iomem case requires no special casing and so can just be dropped outright. This only leaves the ioport casing for PCI and SuperIO mangling. With the SuperIO case going through the standard ioport mapping, it's possible to replace everything with generic routines. With this done the standard I/O routines are tidied up and NO_IOPORT now gets default-enabled for the vast majority of boards. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
165 lines
3.2 KiB
C
165 lines
3.2 KiB
C
/*
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* arch/sh/kernel/iomap.c
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*
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* Copyright (C) 2000 Niibe Yutaka
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* Copyright (C) 2005 - 2007 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/module.h>
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#include <linux/io.h>
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unsigned int ioread8(void __iomem *addr)
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{
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return readb(addr);
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}
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EXPORT_SYMBOL(ioread8);
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unsigned int ioread16(void __iomem *addr)
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{
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return readw(addr);
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}
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EXPORT_SYMBOL(ioread16);
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unsigned int ioread16be(void __iomem *addr)
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{
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return be16_to_cpu(__raw_readw(addr));
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}
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EXPORT_SYMBOL(ioread16be);
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unsigned int ioread32(void __iomem *addr)
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{
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return readl(addr);
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}
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EXPORT_SYMBOL(ioread32);
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unsigned int ioread32be(void __iomem *addr)
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{
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return be32_to_cpu(__raw_readl(addr));
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}
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EXPORT_SYMBOL(ioread32be);
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void iowrite8(u8 val, void __iomem *addr)
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{
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writeb(val, addr);
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}
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EXPORT_SYMBOL(iowrite8);
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void iowrite16(u16 val, void __iomem *addr)
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{
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writew(val, addr);
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}
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EXPORT_SYMBOL(iowrite16);
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void iowrite16be(u16 val, void __iomem *addr)
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{
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__raw_writew(cpu_to_be16(val), addr);
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}
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EXPORT_SYMBOL(iowrite16be);
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void iowrite32(u32 val, void __iomem *addr)
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{
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writel(val, addr);
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}
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EXPORT_SYMBOL(iowrite32);
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void iowrite32be(u32 val, void __iomem *addr)
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{
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__raw_writel(cpu_to_be32(val), addr);
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}
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EXPORT_SYMBOL(iowrite32be);
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/*
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* These are the "repeat MMIO read/write" functions.
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* Note the "__raw" accesses, since we don't want to
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* convert to CPU byte order. We write in "IO byte
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* order" (we also don't have IO barriers).
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*/
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static inline void mmio_insb(void __iomem *addr, u8 *dst, int count)
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{
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while (--count >= 0) {
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u8 data = __raw_readb(addr);
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*dst = data;
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dst++;
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}
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}
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static inline void mmio_insw(void __iomem *addr, u16 *dst, int count)
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{
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while (--count >= 0) {
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u16 data = __raw_readw(addr);
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*dst = data;
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dst++;
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}
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}
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static inline void mmio_insl(void __iomem *addr, u32 *dst, int count)
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{
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while (--count >= 0) {
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u32 data = __raw_readl(addr);
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*dst = data;
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dst++;
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}
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}
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static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count)
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{
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while (--count >= 0) {
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__raw_writeb(*src, addr);
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src++;
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}
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}
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static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count)
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{
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while (--count >= 0) {
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__raw_writew(*src, addr);
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src++;
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}
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}
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static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count)
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{
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while (--count >= 0) {
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__raw_writel(*src, addr);
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src++;
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}
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}
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void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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mmio_insb(addr, dst, count);
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}
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EXPORT_SYMBOL(ioread8_rep);
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void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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mmio_insw(addr, dst, count);
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}
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EXPORT_SYMBOL(ioread16_rep);
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void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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mmio_insl(addr, dst, count);
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}
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EXPORT_SYMBOL(ioread32_rep);
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void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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mmio_outsb(addr, src, count);
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}
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EXPORT_SYMBOL(iowrite8_rep);
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void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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mmio_outsw(addr, src, count);
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}
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EXPORT_SYMBOL(iowrite16_rep);
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void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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mmio_outsl(addr, src, count);
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}
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EXPORT_SYMBOL(iowrite32_rep);
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