Release 4.14 arch/parisc/lib/iomap.c

Directory: arch/parisc/lib
// SPDX-License-Identifier: GPL-2.0
/*
 * iomap.c - Implement iomap interface for PA-RISC
 * Copyright (c) 2004 Matthew Wilcox
 */

#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/export.h>
#include <asm/io.h>

/*
 * The iomap space on 32-bit PA-RISC is intended to look like this:
 * 00000000-7fffffff virtual mapped IO
 * 80000000-8fffffff ISA/EISA port space that can't be virtually mapped
 * 90000000-9fffffff Dino port space
 * a0000000-afffffff Astro port space
 * b0000000-bfffffff PAT port space
 * c0000000-cfffffff non-swapped memory IO
 * f0000000-ffffffff legacy IO memory pointers
 *
 * For the moment, here's what it looks like:
 * 80000000-8fffffff All ISA/EISA port space
 * f0000000-ffffffff legacy IO memory pointers
 *
 * On 64-bit, everything is extended, so:
 * 8000000000000000-8fffffffffffffff All ISA/EISA port space
 * f000000000000000-ffffffffffffffff legacy IO memory pointers
 */

/*
 * Technically, this should be 'if (VMALLOC_START < addr < VMALLOC_END),
 * but that's slow and we know it'll be within the first 2GB.
 */
#ifdef CONFIG_64BIT

#define INDIRECT_ADDR(addr)	(((unsigned long)(addr) & 1UL<<63) != 0)

#define ADDR_TO_REGION(addr)    (((unsigned long)addr >> 60) & 7)

#define IOPORT_MAP_BASE		(8UL << 60)
#else

#define INDIRECT_ADDR(addr)     (((unsigned long)(addr) & 1UL<<31) != 0)

#define ADDR_TO_REGION(addr)    (((unsigned long)addr >> 28) & 7)

#define IOPORT_MAP_BASE		(8UL << 28)
#endif


struct iomap_ops {
	
unsigned int (*read8)(void __iomem *);
	
unsigned int (*read16)(void __iomem *);
	
unsigned int (*read16be)(void __iomem *);
	
unsigned int (*read32)(void __iomem *);
	
unsigned int (*read32be)(void __iomem *);
	
void (*write8)(u8, void __iomem *);
	
void (*write16)(u16, void __iomem *);
	
void (*write16be)(u16, void __iomem *);
	
void (*write32)(u32, void __iomem *);
	
void (*write32be)(u32, void __iomem *);
	
void (*read8r)(void __iomem *, void *, unsigned long);
	
void (*read16r)(void __iomem *, void *, unsigned long);
	
void (*read32r)(void __iomem *, void *, unsigned long);
	
void (*write8r)(void __iomem *, const void *, unsigned long);
	
void (*write16r)(void __iomem *, const void *, unsigned long);
	
void (*write32r)(void __iomem *, const void *, unsigned long);
};

/* Generic ioport ops.  To be replaced later by specific dino/elroy/wax code */


#define ADDR2PORT(addr) ((unsigned long __force)(addr) & 0xffffff)



static unsigned int ioport_read8(void __iomem *addr)
{
	return inb(ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static unsigned int ioport_read16(void __iomem *addr)
{
	return inw(ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static unsigned int ioport_read32(void __iomem *addr)
{
	return inl(ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void ioport_write8(u8 datum, void __iomem *addr)
{
	outb(datum, ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static void ioport_write16(u16 datum, void __iomem *addr)
{
	outw(datum, ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static void ioport_write32(u32 datum, void __iomem *addr)
{
	outl(datum, ADDR2PORT(addr));
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static void ioport_read8r(void __iomem *addr, void *dst, unsigned long count)
{
	insb(ADDR2PORT(addr), dst, count);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static void ioport_read16r(void __iomem *addr, void *dst, unsigned long count)
{
	insw(ADDR2PORT(addr), dst, count);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static void ioport_read32r(void __iomem *addr, void *dst, unsigned long count)
{
	insl(ADDR2PORT(addr), dst, count);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static void ioport_write8r(void __iomem *addr, const void *s, unsigned long n)
{
	outsb(ADDR2PORT(addr), s, n);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static void ioport_write16r(void __iomem *addr, const void *s, unsigned long n)
{
	outsw(ADDR2PORT(addr), s, n);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static void ioport_write32r(void __iomem *addr, const void *s, unsigned long n)
{
	outsl(ADDR2PORT(addr), s, n);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%


static const struct iomap_ops ioport_ops = {
	.read8 = ioport_read8,
	.read16 = ioport_read16,
	.read16be = ioport_read16,
	.read32 = ioport_read32,
	.read32be = ioport_read32,
	.write8 = ioport_write8,
	.write16 = ioport_write16,
	.write16be = ioport_write16,
	.write32 = ioport_write32,
	.write32be = ioport_write32,
	.read8r = ioport_read8r,
	.read16r = ioport_read16r,
	.read32r = ioport_read32r,
	.write8r = ioport_write8r,
	.write16r = ioport_write16r,
	.write32r = ioport_write32r,
};

/* Legacy I/O memory ops */



static unsigned int iomem_read8(void __iomem *addr)
{
	return readb(addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static unsigned int iomem_read16(void __iomem *addr)
{
	return readw(addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static unsigned int iomem_read16be(void __iomem *addr)
{
	return __raw_readw(addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static unsigned int iomem_read32(void __iomem *addr)
{
	return readl(addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static unsigned int iomem_read32be(void __iomem *addr)
{
	return __raw_readl(addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static void iomem_write8(u8 datum, void __iomem *addr)
{
	writeb(datum, addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void iomem_write16(u16 datum, void __iomem *addr)
{
	writew(datum, addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void iomem_write16be(u16 datum, void __iomem *addr)
{
	__raw_writew(datum, addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void iomem_write32(u32 datum, void __iomem *addr)
{
	writel(datum, addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void iomem_write32be(u32 datum, void __iomem *addr)
{
	__raw_writel(datum, addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void iomem_read8r(void __iomem *addr, void *dst, unsigned long count)
{
	while (count--) {
		*(u8 *)dst = __raw_readb(addr);
		dst++;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 41 100.00% 1 100.00%
Total 41 100.00% 1 100.00%



static void iomem_read16r(void __iomem *addr, void *dst, unsigned long count)
{
	while (count--) {
		*(u16 *)dst = __raw_readw(addr);
		dst += 2;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static void iomem_read32r(void __iomem *addr, void *dst, unsigned long count)
{
	while (count--) {
		*(u32 *)dst = __raw_readl(addr);
		dst += 4;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static void iomem_write8r(void __iomem *addr, const void *s, unsigned long n)
{
	while (n--) {
		__raw_writeb(*(u8 *)s, addr);
		s++;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static void iomem_write16r(void __iomem *addr, const void *s, unsigned long n)
{
	while (n--) {
		__raw_writew(*(u16 *)s, addr);
		s += 2;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 43 100.00% 1 100.00%
Total 43 100.00% 1 100.00%



static void iomem_write32r(void __iomem *addr, const void *s, unsigned long n)
{
	while (n--) {
		__raw_writel(*(u32 *)s, addr);
		s += 4;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 43 100.00% 1 100.00%
Total 43 100.00% 1 100.00%


static const struct iomap_ops iomem_ops = {
	.read8 = iomem_read8,
	.read16 = iomem_read16,
	.read16be = iomem_read16be,
	.read32 = iomem_read32,
	.read32be = iomem_read32be,
	.write8 = iomem_write8,
	.write16 = iomem_write16,
	.write16be = iomem_write16be,
	.write32 = iomem_write32,
	.write32be = iomem_write32be,
	.read8r = iomem_read8r,
	.read16r = iomem_read16r,
	.read32r = iomem_read32r,
	.write8r = iomem_write8r,
	.write16r = iomem_write16r,
	.write32r = iomem_write32r,
};


static const struct iomap_ops *iomap_ops[8] = {
	[0] = &ioport_ops,
	[7] = &iomem_ops
};




unsigned int ioread8(void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr)))
		return iomap_ops[ADDR_TO_REGION(addr)]->read8(addr);
	return *((u8 *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%



unsigned int ioread16(void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr)))
		return iomap_ops[ADDR_TO_REGION(addr)]->read16(addr);
	return le16_to_cpup((u16 *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%



unsigned int ioread16be(void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr)))
		return iomap_ops[ADDR_TO_REGION(addr)]->read16be(addr);
	return *((u16 *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%



unsigned int ioread32(void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr)))
		return iomap_ops[ADDR_TO_REGION(addr)]->read32(addr);
	return le32_to_cpup((u32 *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%



unsigned int ioread32be(void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr)))
		return iomap_ops[ADDR_TO_REGION(addr)]->read32be(addr);
	return *((u32 *)addr);
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 45 100.00% 1 100.00%
Total 45 100.00% 1 100.00%



void iowrite8(u8 datum, void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write8(datum, addr);
	} else {
		*((u8 *)addr) = datum;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%



void iowrite16(u16 datum, void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write16(datum, addr);
	} else {
		*((u16 *)addr) = cpu_to_le16(datum);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 57 100.00% 1 100.00%
Total 57 100.00% 1 100.00%



void iowrite16be(u16 datum, void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write16be(datum, addr);
	} else {
		*((u16 *)addr) = datum;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%



void iowrite32(u32 datum, void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write32(datum, addr);
	} else {
		*((u32 *)addr) = cpu_to_le32(datum);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 57 100.00% 1 100.00%
Total 57 100.00% 1 100.00%



void iowrite32be(u32 datum, void __iomem *addr)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write32be(datum, addr);
	} else {
		*((u32 *)addr) = datum;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
James Bottomley 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%

/* Repeating interfaces */



void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->read8r(addr, dst, count);
	} else {
		while (count--) {
			*(u8 *)dst = *(u8 *)addr;
			dst++;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 74 100.00% 1 100.00%
Total 74 100.00% 1 100.00%



void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->read16r(addr, dst, count);
	} else {
		while (count--) {
			*(u16 *)dst = *(u16 *)addr;
			dst += 2;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 75 100.00% 1 100.00%
Total 75 100.00% 1 100.00%



void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->read32r(addr, dst, count);
	} else {
		while (count--) {
			*(u32 *)dst = *(u32 *)addr;
			dst += 4;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 75 100.00% 1 100.00%
Total 75 100.00% 1 100.00%



void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write8r(addr, src, count);
	} else {
		while (count--) {
			*(u8 *)addr = *(u8 *)src;
			src++;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 75 100.00% 1 100.00%
Total 75 100.00% 1 100.00%



void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write16r(addr, src, count);
	} else {
		while (count--) {
			*(u16 *)addr = *(u16 *)src;
			src += 2;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 76 100.00% 1 100.00%
Total 76 100.00% 1 100.00%



void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
{
	if (unlikely(INDIRECT_ADDR(addr))) {
		iomap_ops[ADDR_TO_REGION(addr)]->write32r(addr, src, count);
	} else {
		while (count--) {
			*(u32 *)addr = *(u32 *)src;
			src += 4;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 76 100.00% 1 100.00%
Total 76 100.00% 1 100.00%

/* Mapping interfaces */



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

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



void ioport_unmap(void __iomem *addr)
{
	if (!INDIRECT_ADDR(addr)) {
		iounmap(addr);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
{
	if (!INDIRECT_ADDR(addr)) {
		iounmap(addr);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%


EXPORT_SYMBOL(ioread8);

EXPORT_SYMBOL(ioread16);

EXPORT_SYMBOL(ioread16be);

EXPORT_SYMBOL(ioread32);

EXPORT_SYMBOL(ioread32be);

EXPORT_SYMBOL(iowrite8);

EXPORT_SYMBOL(iowrite16);

EXPORT_SYMBOL(iowrite16be);

EXPORT_SYMBOL(iowrite32);

EXPORT_SYMBOL(iowrite32be);

EXPORT_SYMBOL(ioread8_rep);

EXPORT_SYMBOL(ioread16_rep);

EXPORT_SYMBOL(ioread32_rep);

EXPORT_SYMBOL(iowrite8_rep);

EXPORT_SYMBOL(iowrite16_rep);

EXPORT_SYMBOL(iowrite32_rep);

EXPORT_SYMBOL(ioport_map);

EXPORT_SYMBOL(ioport_unmap);

EXPORT_SYMBOL(pci_iounmap);
Overall Contributors
Person Tokens Prop Commits CommitProp
Matthew Wilcox 1945 80.77% 1 16.67%
James Bottomley 362 15.03% 1 16.67%
Amitoj Kaur Chawla 96 3.99% 1 16.67%
Paul Gortmaker 3 0.12% 1 16.67%
Greg Kroah-Hartman 1 0.04% 1 16.67%
Adrian Bunk 1 0.04% 1 16.67%
Total 2408 100.00% 6 100.00%
Directory: arch/parisc/lib

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
Matthew Wilcox	21	100.00%	1	100.00%
Total	21	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.14 arch/parisc/lib/iomap.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
