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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IO_H
#define _ASM_IO_H

#include <linux/types.h>
#include <asm/pgtable.h>

#define virt_to_phys(a) ((unsigned long)__pa(a))
#define phys_to_virt(a) __va(a)
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt

static inline unsigned long isa_bus_to_virt(unsigned long addr) {
	BUG();
	return 0;
}

static inline unsigned long isa_virt_to_bus(void *addr) {
	BUG();
	return 0;
}

/*
 * Memory mapped I/O
 *
 * readX()/writeX() do byteswapping and take an ioremapped address
 * __raw_readX()/__raw_writeX() don't byteswap and take an ioremapped address.
 * gsc_*() don't byteswap and operate on physical addresses;
 *   eg dev->hpa or 0xfee00000.
 */

static inline unsigned char gsc_readb(unsigned long addr)
{
	long flags;
	unsigned char ret;

	__asm__ __volatile__(
	"	rsm	%3,%0\n"
	"	ldbx	0(%2),%1\n"
	"	mtsm	%0\n"
	: "=&r" (flags), "=r" (ret) : "r" (addr), "i" (PSW_SM_D) );

	return ret;
}

static inline unsigned short gsc_readw(unsigned long addr)
{
	long flags;
	unsigned short ret;

	__asm__ __volatile__(
	"	rsm	%3,%0\n"
	"	ldhx	0(%2),%1\n"
	"	mtsm	%0\n"
	: "=&r" (flags), "=r" (ret) : "r" (addr), "i" (PSW_SM_D) );

	return ret;
}

static inline unsigned int gsc_readl(unsigned long addr)
{
	u32 ret;

	__asm__ __volatile__(
	"	ldwax	0(%1),%0\n"
	: "=r" (ret) : "r" (addr) );

	return ret;
}

static inline unsigned long long gsc_readq(unsigned long addr)
{
	unsigned long long ret;

#ifdef CONFIG_64BIT
	__asm__ __volatile__(
	"	ldda	0(%1),%0\n"
	:  "=r" (ret) : "r" (addr) );
#else
	/* two reads may have side effects.. */
	ret = ((u64) gsc_readl(addr)) << 32;
	ret |= gsc_readl(addr+4);
#endif
	return ret;
}

static inline void gsc_writeb(unsigned char val, unsigned long addr)
{
	long flags;
	__asm__ __volatile__(
	"	rsm	%3,%0\n"
	"	stbs	%1,0(%2)\n"
	"	mtsm	%0\n"
	: "=&r" (flags) :  "r" (val), "r" (addr), "i" (PSW_SM_D) );
}

static inline void gsc_writew(unsigned short val, unsigned long addr)
{
	long flags;
	__asm__ __volatile__(
	"	rsm	%3,%0\n"
	"	sths	%1,0(%2)\n"
	"	mtsm	%0\n"
	: "=&r" (flags) :  "r" (val), "r" (addr), "i" (PSW_SM_D) );
}

static inline void gsc_writel(unsigned int val, unsigned long addr)
{
	__asm__ __volatile__(
	"	stwas	%0,0(%1)\n"
	: :  "r" (val), "r" (addr) );
}

static inline void gsc_writeq(unsigned long long val, unsigned long addr)
{
#ifdef CONFIG_64BIT
	__asm__ __volatile__(
	"	stda	%0,0(%1)\n"
	: :  "r" (val), "r" (addr) );
#else
	/* two writes may have side effects.. */
	gsc_writel(val >> 32, addr);
	gsc_writel(val, addr+4);
#endif
}

/*
 * The standard PCI ioremap interfaces
 */

extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);

/* Most machines react poorly to I/O-space being cacheable... Instead let's
 * define ioremap() in terms of ioremap_nocache().
 */
static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
{
	return __ioremap(offset, size, _PAGE_NO_CACHE);
}
#define ioremap_nocache(off, sz)	ioremap((off), (sz))
#define ioremap_wc			ioremap_nocache
#define ioremap_uc			ioremap_nocache

extern void iounmap(const volatile void __iomem *addr);

static inline unsigned char __raw_readb(const volatile void __iomem *addr)
{
	return (*(volatile unsigned char __force *) (addr));
}
static inline unsigned short __raw_readw(const volatile void __iomem *addr)
{
	return *(volatile unsigned short __force *) addr;
}
static inline unsigned int __raw_readl(const volatile void __iomem *addr)
{
	return *(volatile unsigned int __force *) addr;
}
static inline unsigned long long __raw_readq(const volatile void __iomem *addr)
{
	return *(volatile unsigned long long __force *) addr;
}

static inline void __raw_writeb(unsigned char b, volatile void __iomem *addr)
{
	*(volatile unsigned char __force *) addr = b;
}
static inline void __raw_writew(unsigned short b, volatile void __iomem *addr)
{
	*(volatile unsigned short __force *) addr = b;
}
static inline void __raw_writel(unsigned int b, volatile void __iomem *addr)
{
	*(volatile unsigned int __force *) addr = b;
}
static inline void __raw_writeq(unsigned long long b, volatile void __iomem *addr)
{
	*(volatile unsigned long long __force *) addr = b;
}

static inline unsigned char readb(const volatile void __iomem *addr)
{
	return __raw_readb(addr);
}
static inline unsigned short readw(const volatile void __iomem *addr)
{
	return le16_to_cpu(__raw_readw(addr));
}
static inline unsigned int readl(const volatile void __iomem *addr)
{
	return le32_to_cpu(__raw_readl(addr));
}
static inline unsigned long long readq(const volatile void __iomem *addr)
{
	return le64_to_cpu(__raw_readq(addr));
}

static inline void writeb(unsigned char b, volatile void __iomem *addr)
{
	__raw_writeb(b, addr);
}
static inline void writew(unsigned short w, volatile void __iomem *addr)
{
	__raw_writew(cpu_to_le16(w), addr);
}
static inline void writel(unsigned int l, volatile void __iomem *addr)
{
	__raw_writel(cpu_to_le32(l), addr);
}
static inline void writeq(unsigned long long q, volatile void __iomem *addr)
{
	__raw_writeq(cpu_to_le64(q), addr);
}

#define	readb	readb
#define	readw	readw
#define	readl	readl
#define readq	readq
#define writeb	writeb
#define writew	writew
#define writel	writel
#define writeq	writeq

#define readb_relaxed(addr)	readb(addr)
#define readw_relaxed(addr)	readw(addr)
#define readl_relaxed(addr)	readl(addr)
#define readq_relaxed(addr)	readq(addr)
#define writeb_relaxed(b, addr)	writeb(b, addr)
#define writew_relaxed(w, addr)	writew(w, addr)
#define writel_relaxed(l, addr)	writel(l, addr)
#define writeq_relaxed(q, addr)	writeq(q, addr)

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

void memset_io(volatile void __iomem *addr, unsigned char val, int count);
void memcpy_fromio(void *dst, const volatile void __iomem *src, int count);
void memcpy_toio(volatile void __iomem *dst, const void *src, int count);

/* Port-space IO */

#define inb_p inb
#define inw_p inw
#define inl_p inl
#define outb_p outb
#define outw_p outw
#define outl_p outl

extern unsigned char eisa_in8(unsigned short port);
extern unsigned short eisa_in16(unsigned short port);
extern unsigned int eisa_in32(unsigned short port);
extern void eisa_out8(unsigned char data, unsigned short port);
extern void eisa_out16(unsigned short data, unsigned short port);
extern void eisa_out32(unsigned int data, unsigned short port);

#if defined(CONFIG_PCI)
extern unsigned char inb(int addr);
extern unsigned short inw(int addr);
extern unsigned int inl(int addr);

extern void outb(unsigned char b, int addr);
extern void outw(unsigned short b, int addr);
extern void outl(unsigned int b, int addr);
#elif defined(CONFIG_EISA)
#define inb eisa_in8
#define inw eisa_in16
#define inl eisa_in32
#define outb eisa_out8
#define outw eisa_out16
#define outl eisa_out32
#else
static inline char inb(unsigned long addr)
{
	BUG();
	return -1;
}

static inline short inw(unsigned long addr)
{
	BUG();
	return -1;
}

static inline int inl(unsigned long addr)
{
	BUG();
	return -1;
}

#define outb(x, y)	BUG()
#define outw(x, y)	BUG()
#define outl(x, y)	BUG()
#endif

/*
 * String versions of in/out ops:
 */
extern void insb (unsigned long port, void *dst, unsigned long count);
extern void insw (unsigned long port, void *dst, unsigned long count);
extern void insl (unsigned long port, void *dst, unsigned long count);
extern void outsb (unsigned long port, const void *src, unsigned long count);
extern void outsw (unsigned long port, const void *src, unsigned long count);
extern void outsl (unsigned long port, const void *src, unsigned long count);


/* IO Port space is :      BBiiii   where BB is HBA number. */
#define IO_SPACE_LIMIT 0x00ffffff

/* PA machines have an MM I/O space from 0xf0000000-0xffffffff in 32
 * bit mode and from 0xfffffffff0000000-0xfffffffffffffff in 64 bit
 * mode (essentially just sign extending.  This macro takes in a 32
 * bit I/O address (still with the leading f) and outputs the correct
 * value for either 32 or 64 bit mode */
#define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))

#include <asm-generic/iomap.h>

/*
 * 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

Filemanager

Name Type Size Permission Actions
Kbuild File 610 B 0644
agp.h File 596 B 0644
asm-offsets.h File 35 B 0644
asmregs.h File 3.04 KB 0644
assembly.h File 12.94 KB 0644
atomic.h File 8.24 KB 0644
barrier.h File 2.44 KB 0644
bitops.h File 5.89 KB 0644
bug.h File 2.35 KB 0644
bugs.h File 340 B 0644
cache.h File 1.59 KB 0644
cacheflush.h File 4.06 KB 0644
checksum.h File 5.48 KB 0644
cmpxchg.h File 3.62 KB 0644
compat.h File 6.52 KB 0644
compat_ucontext.h File 591 B 0644
delay.h File 533 B 0644
dma-mapping.h File 2.42 KB 0644
dma.h File 5.71 KB 0644
dwarf.h File 602 B 0644
eisa_bus.h File 702 B 0644
eisa_eeprom.h File 4.42 KB 0644
elf.h File 14.31 KB 0644
fb.h File 403 B 0644
fixmap.h File 1.15 KB 0644
floppy.h File 6.61 KB 0644
ftrace.h File 379 B 0644
futex.h File 2.66 KB 0644
grfioctl.h File 4.68 KB 0644
hardirq.h File 1.3 KB 0644
hardware.h File 4.1 KB 0644
hash.h File 5.07 KB 0644
hugetlb.h File 1.67 KB 0644
ide.h File 1.09 KB 0644
io.h File 8.14 KB 0644
irq.h File 1.23 KB 0644
irqflags.h File 1.02 KB 0644
kbdleds.h File 477 B 0644
kmap_types.h File 221 B 0644
ldcw.h File 2.15 KB 0644
led.h File 1.33 KB 0644
linkage.h File 759 B 0644
machdep.h File 349 B 0644
mckinley.h File 270 B 0644
mmu.h File 195 B 0644
mmu_context.h File 2.08 KB 0644
mmzone.h File 1.51 KB 0644
module.h File 527 B 0644
page.h File 5.42 KB 0644
parisc-device.h File 1.92 KB 0644
parport.h File 358 B 0644
pci.h File 6.57 KB 0644
pdc.h File 3.93 KB 0644
pdc_chassis.h File 15.06 KB 0644
pdcpat.h File 15 KB 0644
perf.h File 1.89 KB 0644
perf_event.h File 152 B 0644
pgalloc.h File 4.22 KB 0644
pgtable.h File 18.92 KB 0644
prefetch.h File 1.12 KB 0644
processor.h File 9.86 KB 0644
psw.h File 2.39 KB 0644
ptrace.h File 803 B 0644
ropes.h File 9.73 KB 0644
rt_sigframe.h File 745 B 0644
runway.h File 320 B 0644
sections.h File 283 B 0644
serial.h File 124 B 0644
shmparam.h File 263 B 0644
signal.h File 841 B 0644
smp.h File 1.25 KB 0644
socket.h File 311 B 0644
special_insns.h File 1015 B 0644
spinlock.h File 4.02 KB 0644
spinlock_types.h File 483 B 0644
string.h File 247 B 0644
superio.h File 3.25 KB 0644
switch_to.h File 332 B 0644
syscall.h File 1.4 KB 0644
termios.h File 1.72 KB 0644
thread_info.h File 3.15 KB 0644
timex.h File 372 B 0644
tlb.h File 672 B 0644
tlbflush.h File 2.63 KB 0644
topology.h File 900 B 0644
traps.h File 468 B 0644
uaccess.h File 6.55 KB 0644
ucontext.h File 327 B 0644
unaligned.h File 472 B 0644
unistd.h File 5.47 KB 0644
unwind.h File 2.56 KB 0644