/*  * linux/arch/sh/kernel/io_7751se.c * * Copyright (C) 2002  David McCullough <davidm@snapgear.com> * Copyright (C) 2001  Ian da Silva, Jeremy Siegel * Based largely on io_se.c. * * I/O routine for Hitachi 7751 SolutionEngine. * * Initial version only to support LAN access; some * placeholder code from io_se.c left in with the * expectation of later SuperIO and PCMCIA access. */#include <linux/kernel.h>#include <linux/types.h>#include <linux/pci.h>#include <asm/io.h>#include <asm/addrspace.h>#include <asm/pci.h>#include "../../drivers/pci/pci-sh7751.h"#ifdef CONFIG_SH_SECUREEDGE5410unsigned short secureedge5410_ioport;#endif/* * The SnapGear uses the built-in PCI controller (PCIC) * of the 7751 processor */ #define PCIIOBR		(volatile long *)PCI_REG(SH7751_PCIIOBR)#define PCIMBR          (volatile long *)PCI_REG(SH7751_PCIMBR)#define PCI_IO_AREA	SH7751_PCI_IO_BASE#define PCI_MEM_AREA	SH7751_PCI_CONFIG_BASE#define PCI_IOMAP(adr)	(PCI_IO_AREA + (adr & ~SH7751_PCIIOBR_MASK))#define maybebadio(name,port) \  printk("bad PC-like io %s for port 0x%lx at 0x%08x\n", \	 #name, (port), (__u32) __builtin_return_address(0))static inline void delay(void){	ctrl_inw(0xa0000000);}static inline volatile __u16 *port2adr(unsigned int port){#if 0	if (port >= 0x2000)		return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));#endif	maybebadio(name,(unsigned long)port);	return (volatile __u16*)port;}/* In case someone configures the kernel w/o PCI support: in that *//* scenario, don't ever bother to check for PCI-window addresses *//* NOTE: WINDOW CHECK MAY BE A BIT OFF, HIGH PCIBIOS_MIN_IO WRAPS? */#if defined(CONFIG_PCI)#define CHECK_SH7751_PCIIO(port) \  ((port >= PCIBIOS_MIN_IO) && (port < (PCIBIOS_MIN_IO + SH7751_PCI_IO_SIZE)))#else#define CHECK_SH7751_PCIIO(port) (0)#endif/* * General outline: remap really low stuff [eventually] to SuperIO, * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) * is mapped through the PCI IO window.  Stuff with high bits (PXSEG) * should be way beyond the window, and is used  w/o translation for * compatibility. */unsigned char snapgear_inb(unsigned long port){	if (PXSEG(port))		return *(volatile unsigned char *)port;	else if (CHECK_SH7751_PCIIO(port))		return *(volatile unsigned char *)PCI_IOMAP(port);	else		return (*port2adr(port))&0xff; }unsigned char snapgear_inb_p(unsigned long port){	unsigned char v;	if (PXSEG(port))		v = *(volatile unsigned char *)port;	else if (CHECK_SH7751_PCIIO(port))		v = *(volatile unsigned char *)PCI_IOMAP(port);	else		v = (*port2adr(port))&0xff; 	delay();	return v;}unsigned short snapgear_inw(unsigned long port){	if (PXSEG(port))		return *(volatile unsigned short *)port;	else if (CHECK_SH7751_PCIIO(port))		return *(volatile unsigned short *)PCI_IOMAP(port);	else if (port >= 0x2000)		return *port2adr(port);	else		maybebadio(inw, port);	return 0;}unsigned int snapgear_inl(unsigned long port){	if (PXSEG(port))		return *(volatile unsigned long *)port;	else if (CHECK_SH7751_PCIIO(port))		return *(volatile unsigned int *)PCI_IOMAP(port);	else if (port >= 0x2000)		return *port2adr(port);	else		maybebadio(inl, port);	return 0;}void snapgear_outb(unsigned char value, unsigned long port){	if (PXSEG(port))		*(volatile unsigned char *)port = value;	else if (CHECK_SH7751_PCIIO(port))		*((unsigned char*)PCI_IOMAP(port)) = value;	else		*(port2adr(port)) = value;}void snapgear_outb_p(unsigned char value, unsigned long port){	if (PXSEG(port))		*(volatile unsigned char *)port = value;	else if (CHECK_SH7751_PCIIO(port))		*((unsigned char*)PCI_IOMAP(port)) = value;	else		*(port2adr(port)) = value;	delay();}void snapgear_outw(unsigned short value, unsigned long port){	if (PXSEG(port))		*(volatile unsigned short *)port = value;	else if (CHECK_SH7751_PCIIO(port))		*((unsigned short *)PCI_IOMAP(port)) = value;	else if (port >= 0x2000)		*port2adr(port) = value;	else		maybebadio(outw, port);}void snapgear_outl(unsigned int value, unsigned long port){	if (PXSEG(port))		*(volatile unsigned long *)port = value;	else if (CHECK_SH7751_PCIIO(port))		*((unsigned long*)PCI_IOMAP(port)) = value;	else		maybebadio(outl, port);}void snapgear_insl(unsigned long port, void *addr, unsigned long count){	maybebadio(insl, port);}void snapgear_outsl(unsigned long port, const void *addr, unsigned long count){	maybebadio(outsw, port);}/* Map ISA bus address to the real address. Only for PCMCIA.  *//* ISA page descriptor.  */static __u32 sh_isa_memmap[256];#if 0static int sh_isa_mmap(__u32 start, __u32 length, __u32 offset){	int idx;	if (start >= 0x100000 || (start & 0xfff) || (length != 0x1000))		return -1;	idx = start >> 12;	sh_isa_memmap[idx] = 0xb8000000 + (offset &~ 0xfff);#if 0	printk("sh_isa_mmap: start %x len %x offset %x (idx %x paddr %x)\n",	       start, length, offset, idx, sh_isa_memmap[idx]);#endif	return 0;}#endifunsigned long snapgear_isa_port2addr(unsigned long offset){	int idx;	idx = (offset >> 12) & 0xff;	offset &= 0xfff;	return sh_isa_memmap[idx] + offset;}