Release 4.14 arch/frv/include/asm/io.h

Directory: arch/frv/include/asm
/* 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));
}

Contributors
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David Howells 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static inline unsigned long _swapl(unsigned long v)
{
    return ((v << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | (v >> 24));
}

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David Howells 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%

//#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);
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Boyd 25 96.15% 1 50.00%
David Howells 1 3.85% 1 50.00%
Total 26 100.00% 2 100.00%



static inline u16 __raw_readw(const volatile void __iomem *addr)
{
	return __builtin_read16((volatile void __iomem *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Boyd 25 96.15% 1 50.00%
David Howells 1 3.85% 1 50.00%
Total 26 100.00% 2 100.00%



static inline u32 __raw_readl(const volatile void __iomem *addr)
{
	return __builtin_read32((volatile void __iomem *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Boyd 25 96.15% 1 50.00%
David Howells 1 3.85% 1 50.00%
Total 26 100.00% 2 100.00%


#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++);
}

Contributors
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David Howells 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%



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++));
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 58 100.00% 1 100.00%
Total 58 100.00% 1 100.00%

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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 44 100.00% 1 100.00%
Total 44 100.00% 1 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 44 100.00% 1 100.00%
Total 44 100.00% 1 100.00%

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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%


#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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%



static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
{
	memcpy(dst, (void __force *) src, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 34 97.14% 1 50.00%
Al Viro 1 2.86% 1 50.00%
Total 35 100.00% 2 100.00%



static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
{
	memcpy((void __force *) dst, src, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 35 100.00% 1 100.00%
Total 35 100.00% 1 100.00%



static inline uint8_t inb(unsigned long addr)
{
	return __builtin_read8((void __iomem *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 21 95.45% 1 50.00%
Al Viro 1 4.55% 1 50.00%
Total 22 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 40 97.56% 1 50.00%
Al Viro 1 2.44% 1 50.00%
Total 41 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 40 97.56% 1 50.00%
Al Viro 1 2.44% 1 50.00%
Total 41 100.00% 2 100.00%



static inline void outb(uint8_t datum, unsigned long addr)
{
	__builtin_write8((void __iomem *)addr, datum);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 25 96.15% 1 50.00%
Al Viro 1 3.85% 1 50.00%
Total 26 100.00% 2 100.00%



static inline void outw(uint16_t datum, unsigned long addr)
{
	if (__is_PCI_IO(addr))
		datum = _swapw(datum);
	__builtin_write16((void __iomem *)addr, datum);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 39 97.50% 1 50.00%
Al Viro 1 2.50% 1 50.00%
Total 40 100.00% 2 100.00%



static inline void outl(uint32_t datum, unsigned long addr)
{
	if (__is_PCI_IO(addr))
		datum = _swapl(datum);
	__builtin_write32((void __iomem *)addr, datum);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 39 97.50% 1 50.00%
Al Viro 1 2.50% 1 50.00%
Total 40 100.00% 2 100.00%


#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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 24 88.89% 1 50.00%
Al Viro 3 11.11% 1 50.00%
Total 27 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 43 93.48% 1 50.00%
Al Viro 3 6.52% 1 50.00%
Total 46 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 43 93.48% 1 50.00%
Al Viro 3 6.52% 1 50.00%
Total 46 100.00% 2 100.00%


#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();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%



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();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%



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();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%


#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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
{
	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static inline void __iomem *ioremap_wt(unsigned long physaddr, unsigned long size)
{
	return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}

Contributors
Person Tokens Prop Commits CommitProp
Toshi Kani 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned long size)
{
	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%


#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;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static inline void ioport_unmap(void __iomem *p)
{
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 11 100.00% 1 100.00%
Total 11 100.00% 1 100.00%



static inline void flush_write_buffers(void)
{
	__asm__ __volatile__ ("membar" : : :"memory");
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 12 100.00% 1 100.00%
Total 12 100.00% 1 100.00%

/*
 * do appropriate I/O accesses for token type
 */


static inline unsigned int ioread8(void __iomem *p)
{
	return __builtin_read8(p);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 16 84.21% 1 50.00%
Jes Sorensen 3 15.79% 1 50.00%
Total 19 100.00% 2 100.00%



static inline unsigned int ioread16(void __iomem *p)
{
	uint16_t ret = __builtin_read16(p);
	if (__is_PCI_addr(p))
		ret = _swapw(ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 38 100.00% 1 100.00%
Total 38 100.00% 1 100.00%



static inline unsigned int ioread32(void __iomem *p)
{
	uint32_t ret = __builtin_read32(p);
	if (__is_PCI_addr(p))
		ret = _swapl(ret);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 35 92.11% 1 50.00%
Jes Sorensen 3 7.89% 1 50.00%
Total 38 100.00% 2 100.00%



static inline void iowrite8(u8 val, void __iomem *p)
{
	__builtin_write8(p, val);
	if (__is_PCI_MEM(p))
		__flush_PCI_writes();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



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();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%



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();
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%


#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);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%



static inline void ioread16_rep(void __iomem *p, void *dst, unsigned long count)
{
	io_insw((unsigned long) p, dst, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%



static inline void ioread32_rep(void __iomem *p, void *dst, unsigned long count)
{
	__insl_ns((unsigned long) p, dst, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%



static inline void iowrite8_rep(void __iomem *p, const void *src, unsigned long count)
{
	io_outsb((unsigned long) p, src, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%



static inline void iowrite16_rep(void __iomem *p, const void *src, unsigned long count)
{
	io_outsw((unsigned long) p, src, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%



static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long count)
{
	__outsl_ns((unsigned long) p, src, count);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%

/* 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)
{
}


Contributors
Person Tokens Prop Commits CommitProp
David Howells 16 100.00% 1 100.00%
Total 16 100.00% 1 100.00%

/*
 * 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 */
Overall Contributors
Person Tokens Prop Commits CommitProp
David Howells 1813 90.88% 3 25.00%
Stephen Boyd 75 3.76% 1 8.33%
Guenter Roeck 32 1.60% 1 8.33%
Toshi Kani 30 1.50% 1 8.33%
Al Viro 20 1.00% 2 16.67%
Will Deacon 12 0.60% 1 8.33%
Jes Sorensen 6 0.30% 1 8.33%
Luis R. Rodriguez 4 0.20% 1 8.33%
Michael S. Tsirkin 3 0.15% 1 8.33%
Total 1995 100.00% 12 100.00%
Directory: arch/frv/include/asm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
David Howells	27	100.00%	1	100.00%
Total	27	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.14 arch/frv/include/asm/io.h

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