Release 4.14 arch/mn10300/include/asm/io.h

Directory: arch/mn10300/include/asm
/* MN10300 I/O port emulation and memory-mapped I/O
 *
 * Copyright (C) 2007 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 Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_IO_H

#define _ASM_IO_H

#include <asm/page.h> /* I/O is all done through memory accesses */
#include <asm/cpu-regs.h>
#include <asm/cacheflush.h>
#include <asm-generic/pci_iomap.h>


#define mmiowb() do {} while (0)

/*****************************************************************************/
/*
 * readX/writeX() are used to access memory mapped devices. On some
 * architectures the memory mapped IO stuff needs to be accessed
 * differently. On the x86 architecture, we just read/write the
 * memory location directly.
 */


static inline u8 readb(const volatile void __iomem *addr)
{
	return *(const volatile u8 *) addr;
}

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David Howells 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



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

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David Howells 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



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

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David Howells 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%


#define __raw_readb readb

#define __raw_readw readw

#define __raw_readl readl


#define readb_relaxed readb

#define readw_relaxed readw

#define readl_relaxed readl



static inline void writeb(u8 b, volatile void __iomem *addr)
{
	*(volatile u8 *) addr = b;
}

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David Howells 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%



static inline void writew(u16 b, volatile void __iomem *addr)
{
	*(volatile u16 *) addr = b;
}

Contributors
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David Howells 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%



static inline void writel(u32 b, volatile void __iomem *addr)
{
	*(volatile u32 *) addr = b;
}

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David Howells 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%


#define __raw_writeb writeb

#define __raw_writew writew

#define __raw_writel writel


#define writeb_relaxed writeb

#define writew_relaxed writew

#define writel_relaxed writel

/*****************************************************************************/
/*
 * traditional input/output functions
 */


static inline u8 inb_local(unsigned long addr)
{
	return readb((volatile void __iomem *) addr);
}

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David Howells 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



static inline void outb_local(u8 b, unsigned long addr)
{
	return writeb(b, (volatile void __iomem *) addr);
}

Contributors
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David Howells 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%



static inline u8 inb(unsigned long addr)
{
	return readb((volatile void __iomem *) addr);
}

Contributors
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David Howells 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



static inline u16 inw(unsigned long addr)
{
	return readw((volatile void __iomem *) addr);
}

Contributors
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David Howells 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



static inline u32 inl(unsigned long addr)
{
	return readl((volatile void __iomem *) addr);
}

Contributors
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David Howells 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%



static inline void outb(u8 b, unsigned long addr)
{
	return writeb(b, (volatile void __iomem *) addr);
}

Contributors
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David Howells 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%



static inline void outw(u16 b, unsigned long addr)
{
	return writew(b, (volatile void __iomem *) addr);
}

Contributors
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David Howells 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%



static inline void outl(u32 b, unsigned long addr)
{
	return writel(b, (volatile void __iomem *) addr);
}

Contributors
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David Howells 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%


#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))



static inline void insb(unsigned long addr, void *buffer, int count)
{
	if (count) {
		u8 *buf = buffer;
		do {
			u8 x = inb(addr);
			*buf++ = x;
		} while (--count);
	}
}

Contributors
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David Howells 53 100.00% 1 100.00%
Total 53 100.00% 1 100.00%



static inline void insw(unsigned long addr, void *buffer, int count)
{
	if (count) {
		u16 *buf = buffer;
		do {
			u16 x = inw(addr);
			*buf++ = x;
		} while (--count);
	}
}

Contributors
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David Howells 53 100.00% 1 100.00%
Total 53 100.00% 1 100.00%



static inline void insl(unsigned long addr, void *buffer, int count)
{
	if (count) {
		u32 *buf = buffer;
		do {
			u32 x = inl(addr);
			*buf++ = x;
		} while (--count);
	}
}

Contributors
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David Howells 53 100.00% 1 100.00%
Total 53 100.00% 1 100.00%



static inline void outsb(unsigned long addr, const void *buffer, int count)
{
	if (count) {
		const u8 *buf = buffer;
		do {
			outb(*buf++, addr);
		} while (--count);
	}
}

Contributors
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David Howells 50 100.00% 1 100.00%
Total 50 100.00% 1 100.00%



static inline void outsw(unsigned long addr, const void *buffer, int count)
{
	if (count) {
		const u16 *buf = buffer;
		do {
			outw(*buf++, addr);
		} while (--count);
	}
}

Contributors
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David Howells 50 100.00% 1 100.00%
Total 50 100.00% 1 100.00%

extern void __outsl(unsigned long addr, const void *buffer, int count);


static inline void outsl(unsigned long addr, const void *buffer, int count)
{
	if ((unsigned long) buffer & 0x3)
		return __outsl(addr, buffer, count);

	if (count) {
		const u32 *buf = buffer;
		do {
			outl(*buf++, addr);
		} while (--count);
	}
}

Contributors
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David Howells 70 100.00% 1 100.00%
Total 70 100.00% 1 100.00%


#define ioread8(addr)		readb(addr)

#define ioread16(addr)		readw(addr)

#define ioread32(addr)		readl(addr)


#define iowrite8(v, addr)	writeb((v), (addr))

#define iowrite16(v, addr)	writew((v), (addr))

#define iowrite32(v, addr)	writel((v), (addr))


#define ioread16be(addr)	be16_to_cpu(readw(addr))

#define ioread32be(addr)	be32_to_cpu(readl(addr))

#define iowrite16be(v, addr)	writew(cpu_to_be16(v), (addr))

#define iowrite32be(v, addr)	writel(cpu_to_be32(v), (addr))


#define ioread8_rep(p, dst, count) \
	insb((unsigned long) (p), (dst), (count))

#define ioread16_rep(p, dst, count) \
	insw((unsigned long) (p), (dst), (count))

#define ioread32_rep(p, dst, count) \
	insl((unsigned long) (p), (dst), (count))


#define iowrite8_rep(p, src, count) \
	outsb((unsigned long) (p), (src), (count))

#define iowrite16_rep(p, src, count) \
	outsw((unsigned long) (p), (src), (count))

#define iowrite32_rep(p, src, count) \
	outsl((unsigned long) (p), (src), (count))


#define readsb(p, dst, count) \
	insb((unsigned long) (p), (dst), (count))

#define readsw(p, dst, count) \
	insw((unsigned long) (p), (dst), (count))

#define readsl(p, dst, count) \
	insl((unsigned long) (p), (dst), (count))


#define writesb(p, src, count) \
	outsb((unsigned long) (p), (src), (count))

#define writesw(p, src, count) \
	outsw((unsigned long) (p), (src), (count))

#define writesl(p, src, count) \
	outsl((unsigned long) (p), (src), (count))


#define IO_SPACE_LIMIT 0xffffffff

#ifdef __KERNEL__

#include <linux/vmalloc.h>

#define __io_virt(x) ((void *) (x))

/* 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
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David Howells 16 100.00% 1 100.00%
Total 16 100.00% 1 100.00%

/*
 * Change virtual addresses to physical addresses and vv.
 * These are pretty trivial
 */


static inline unsigned long virt_to_phys(volatile void *address)
{
	return __pa(address);
}

Contributors
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David Howells 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



static inline void *phys_to_virt(unsigned long address)
{
	return __va(address);
}

Contributors
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David Howells 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%

/*
 * Change "struct page" to physical address.
 */


static inline void __iomem *__ioremap(unsigned long offset, unsigned long size,
				      unsigned long flags)
{
	return (void __iomem *) offset;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 27 93.10% 1 50.00%
Michael S. Tsirkin 2 6.90% 1 50.00%
Total 29 100.00% 2 100.00%



static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
	return (void __iomem *)(offset & ~0x20000000);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 28 93.33% 2 66.67%
Michael S. Tsirkin 2 6.67% 1 33.33%
Total 30 100.00% 3 100.00%

/*
 * This one maps high address device memory and turns off caching for that
 * area.  it's useful if some control registers are in such an area and write
 * combining or read caching is not desirable:
 */


static inline void __iomem *ioremap_nocache(unsigned long offset, unsigned long size)
{
	return (void __iomem *) (offset | 0x20000000);
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 27 93.10% 1 50.00%
Michael S. Tsirkin 2 6.90% 1 50.00%
Total 29 100.00% 2 100.00%


#define ioremap_wc ioremap_nocache

#define ioremap_wt ioremap_nocache

#define ioremap_uc ioremap_nocache



static inline void iounmap(void __iomem *addr)
{
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 10 90.91% 1 50.00%
Michael S. Tsirkin 1 9.09% 1 50.00%
Total 11 100.00% 2 100.00%



static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
	return (void __iomem *) port;
}

Contributors
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David Howells 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



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

Contributors
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David Howells 11 100.00% 1 100.00%
Total 11 100.00% 1 100.00%


#define xlate_dev_kmem_ptr(p)	((void *) (p))

#define xlate_dev_mem_ptr(p)	((void *) (p))

/*
 * PCI bus iomem addresses must be in the region 0x80000000-0x9fffffff
 */


static inline unsigned long virt_to_bus(volatile void *address)
{
	return ((unsigned long) address) & ~0x20000000;
}

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



static inline void *bus_to_virt(unsigned long address)
{
	return (void *) address;
}

Contributors
Person Tokens Prop Commits CommitProp
David Howells 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%


#define page_to_bus page_to_phys


#define memset_io(a, b, c)	memset(__io_virt(a), (b), (c))

#define memcpy_fromio(a, b, c)	memcpy((a), __io_virt(b), (c))

#define memcpy_toio(a, b, c)	memcpy(__io_virt(a), (b), (c))

#endif /* __KERNEL__ */

#endif /* _ASM_IO_H */
Overall Contributors
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David Howells 1244 90.47% 4 40.00%
Akira Takeuchi 72 5.24% 1 10.00%
Guenter Roeck 32 2.33% 1 10.00%
Will Deacon 12 0.87% 1 10.00%
Michael S. Tsirkin 7 0.51% 1 10.00%
Toshi Kani 4 0.29% 1 10.00%
Luis R. Rodriguez 4 0.29% 1 10.00%
Total 1375 100.00% 10 100.00%
Directory: arch/mn10300/include/asm

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Person	Tokens	Prop	Commits	CommitProp
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Total	24	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.14 arch/mn10300/include/asm/io.h

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