+++ /dev/null
-/* io.h: FRV I/O operations
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * This gets interesting when talking to the PCI bus - the CPU is in big endian
- * mode, the PCI bus is little endian and the hardware in the middle can do
- * byte swapping
- */
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#ifdef __KERNEL__
-
-#define ARCH_HAS_IOREMAP_WT
-
-#include <linux/types.h>
-#include <asm/virtconvert.h>
-#include <asm/string.h>
-#include <asm/mb-regs.h>
-#include <asm-generic/pci_iomap.h>
-#include <linux/delay.h>
-
-/*
- * swap functions are sometimes needed to interface little-endian hardware
- */
-
-static inline unsigned short _swapw(unsigned short v)
-{
- return ((v << 8) | (v >> 8));
-}
-
-static inline unsigned long _swapl(unsigned long v)
-{
- return ((v << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | (v >> 24));
-}
-
-//#define __iormb() asm volatile("membar")
-//#define __iowmb() asm volatile("membar")
-
-static inline u8 __raw_readb(const volatile void __iomem *addr)
-{
- return __builtin_read8((volatile void __iomem *)addr);
-}
-
-static inline u16 __raw_readw(const volatile void __iomem *addr)
-{
- return __builtin_read16((volatile void __iomem *)addr);
-}
-
-static inline u32 __raw_readl(const volatile void __iomem *addr)
-{
- return __builtin_read32((volatile void __iomem *)addr);
-}
-
-#define __raw_writeb(datum, addr) __builtin_write8(addr, datum)
-#define __raw_writew(datum, addr) __builtin_write16(addr, datum)
-#define __raw_writel(datum, addr) __builtin_write32(addr, datum)
-
-static inline void io_outsb(unsigned int addr, const void *buf, int len)
-{
- unsigned long __ioaddr = (unsigned long) addr;
- const uint8_t *bp = buf;
-
- while (len--)
- __builtin_write8((volatile void __iomem *) __ioaddr, *bp++);
-}
-
-static inline void io_outsw(unsigned int addr, const void *buf, int len)
-{
- unsigned long __ioaddr = (unsigned long) addr;
- const uint16_t *bp = buf;
-
- while (len--)
- __builtin_write16((volatile void __iomem *) __ioaddr, (*bp++));
-}
-
-extern void __outsl_ns(unsigned int addr, const void *buf, int len);
-extern void __outsl_sw(unsigned int addr, const void *buf, int len);
-static inline void __outsl(unsigned int addr, const void *buf, int len, int swap)
-{
- unsigned long __ioaddr = (unsigned long) addr;
-
- if (!swap)
- __outsl_ns(__ioaddr, buf, len);
- else
- __outsl_sw(__ioaddr, buf, len);
-}
-
-static inline void io_insb(unsigned long addr, void *buf, int len)
-{
- uint8_t *bp = buf;
-
- while (len--)
- *bp++ = __builtin_read8((volatile void __iomem *) addr);
-}
-
-static inline void io_insw(unsigned long addr, void *buf, int len)
-{
- uint16_t *bp = buf;
-
- while (len--)
- *bp++ = __builtin_read16((volatile void __iomem *) addr);
-}
-
-extern void __insl_ns(unsigned long addr, void *buf, int len);
-extern void __insl_sw(unsigned long addr, void *buf, int len);
-static inline void __insl(unsigned long addr, void *buf, int len, int swap)
-{
- if (!swap)
- __insl_ns(addr, buf, len);
- else
- __insl_sw(addr, buf, len);
-}
-
-#define mmiowb() mb()
-
-/*
- * make the short names macros so specific devices
- * can override them as required
- */
-
-static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
-{
- memset((void __force *) addr, val, count);
-}
-
-static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
-{
- memcpy(dst, (void __force *) src, count);
-}
-
-static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
-{
- memcpy((void __force *) dst, src, count);
-}
-
-static inline uint8_t inb(unsigned long addr)
-{
- return __builtin_read8((void __iomem *)addr);
-}
-
-static inline uint16_t inw(unsigned long addr)
-{
- uint16_t ret = __builtin_read16((void __iomem *)addr);
-
- if (__is_PCI_IO(addr))
- ret = _swapw(ret);
-
- return ret;
-}
-
-static inline uint32_t inl(unsigned long addr)
-{
- uint32_t ret = __builtin_read32((void __iomem *)addr);
-
- if (__is_PCI_IO(addr))
- ret = _swapl(ret);
-
- return ret;
-}
-
-static inline void outb(uint8_t datum, unsigned long addr)
-{
- __builtin_write8((void __iomem *)addr, datum);
-}
-
-static inline void outw(uint16_t datum, unsigned long addr)
-{
- if (__is_PCI_IO(addr))
- datum = _swapw(datum);
- __builtin_write16((void __iomem *)addr, datum);
-}
-
-static inline void outl(uint32_t datum, unsigned long addr)
-{
- if (__is_PCI_IO(addr))
- datum = _swapl(datum);
- __builtin_write32((void __iomem *)addr, datum);
-}
-
-#define inb_p(addr) inb(addr)
-#define inw_p(addr) inw(addr)
-#define inl_p(addr) inl(addr)
-#define outb_p(x,addr) outb(x,addr)
-#define outw_p(x,addr) outw(x,addr)
-#define outl_p(x,addr) outl(x,addr)
-
-#define outsb(a,b,l) io_outsb(a,b,l)
-#define outsw(a,b,l) io_outsw(a,b,l)
-#define outsl(a,b,l) __outsl(a,b,l,0)
-
-#define insb(a,b,l) io_insb(a,b,l)
-#define insw(a,b,l) io_insw(a,b,l)
-#define insl(a,b,l) __insl(a,b,l,0)
-
-#define IO_SPACE_LIMIT 0xffffffff
-
-static inline uint8_t readb(const volatile void __iomem *addr)
-{
- return __builtin_read8((__force void volatile __iomem *) addr);
-}
-
-static inline uint16_t readw(const volatile void __iomem *addr)
-{
- uint16_t ret = __builtin_read16((__force void volatile __iomem *)addr);
-
- if (__is_PCI_MEM(addr))
- ret = _swapw(ret);
- return ret;
-}
-
-static inline uint32_t readl(const volatile void __iomem *addr)
-{
- uint32_t ret = __builtin_read32((__force void volatile __iomem *)addr);
-
- if (__is_PCI_MEM(addr))
- ret = _swapl(ret);
-
- return ret;
-}
-
-#define readb_relaxed readb
-#define readw_relaxed readw
-#define readl_relaxed readl
-
-static inline void writeb(uint8_t datum, volatile void __iomem *addr)
-{
- __builtin_write8(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-static inline void writew(uint16_t datum, volatile void __iomem *addr)
-{
- if (__is_PCI_MEM(addr))
- datum = _swapw(datum);
-
- __builtin_write16(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-static inline void writel(uint32_t datum, volatile void __iomem *addr)
-{
- if (__is_PCI_MEM(addr))
- datum = _swapl(datum);
-
- __builtin_write32(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-#define writeb_relaxed writeb
-#define writew_relaxed writew
-#define writel_relaxed writel
-
-/* Values for nocacheflag and cmode */
-#define IOMAP_FULL_CACHING 0
-#define IOMAP_NOCACHE_SER 1
-#define IOMAP_NOCACHE_NONSER 2
-#define IOMAP_WRITETHROUGH 3
-
-extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
-
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-
-static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-
-static inline void __iomem *ioremap_wt(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
-}
-
-static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
-}
-
-#define ioremap_wc ioremap_nocache
-#define ioremap_uc ioremap_nocache
-
-extern void iounmap(void volatile __iomem *addr);
-
-static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
- return (void __iomem *) port;
-}
-
-static inline void ioport_unmap(void __iomem *p)
-{
-}
-
-static inline void flush_write_buffers(void)
-{
- __asm__ __volatile__ ("membar" : : :"memory");
-}
-
-/*
- * do appropriate I/O accesses for token type
- */
-static inline unsigned int ioread8(void __iomem *p)
-{
- return __builtin_read8(p);
-}
-
-static inline unsigned int ioread16(void __iomem *p)
-{
- uint16_t ret = __builtin_read16(p);
- if (__is_PCI_addr(p))
- ret = _swapw(ret);
- return ret;
-}
-
-static inline unsigned int ioread32(void __iomem *p)
-{
- uint32_t ret = __builtin_read32(p);
- if (__is_PCI_addr(p))
- ret = _swapl(ret);
- return ret;
-}
-
-static inline void iowrite8(u8 val, void __iomem *p)
-{
- __builtin_write8(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-static inline void iowrite16(u16 val, void __iomem *p)
-{
- if (__is_PCI_addr(p))
- val = _swapw(val);
- __builtin_write16(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-static inline void iowrite32(u32 val, void __iomem *p)
-{
- if (__is_PCI_addr(p))
- val = _swapl(val);
- __builtin_write32(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-#define ioread16be(addr) be16_to_cpu(ioread16(addr))
-#define ioread32be(addr) be32_to_cpu(ioread32(addr))
-#define iowrite16be(v, addr) iowrite16(cpu_to_be16(v), (addr))
-#define iowrite32be(v, addr) iowrite32(cpu_to_be32(v), (addr))
-
-static inline void ioread8_rep(void __iomem *p, void *dst, unsigned long count)
-{
- io_insb((unsigned long) p, dst, count);
-}
-
-static inline void ioread16_rep(void __iomem *p, void *dst, unsigned long count)
-{
- io_insw((unsigned long) p, dst, count);
-}
-
-static inline void ioread32_rep(void __iomem *p, void *dst, unsigned long count)
-{
- __insl_ns((unsigned long) p, dst, count);
-}
-
-static inline void iowrite8_rep(void __iomem *p, const void *src, unsigned long count)
-{
- io_outsb((unsigned long) p, src, count);
-}
-
-static inline void iowrite16_rep(void __iomem *p, const void *src, unsigned long count)
-{
- io_outsw((unsigned long) p, src, count);
-}
-
-static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long count)
-{
- __outsl_ns((unsigned long) p, src, count);
-}
-
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
-struct pci_dev;
-static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
-{
-}
-
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem
- * access
- */
-#define xlate_dev_mem_ptr(p) __va(p)
-
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_IO_H */
git.samba.org / sfrench / cifs-2.6.git / blobdiff