/* * linux/arch/sh/kernel/io_rts7751r2d.c * * Copyright (C) 2001  Ian da Silva, Jeremy Siegel * Based largely on io_se.c. * * I/O routine for Renesas Technology sales RTS7751R2D. * * Initial version only to support LAN access; some * placeholder code from io_rts7751r2d.c left in with the * expectation of later SuperIO and PCMCIA access. */#include <linux/kernel.h>#include <linux/types.h>#include <asm/io.h>#include <asm/rts7751r2d/rts7751r2d.h>#include <asm/addrspace.h>#include <linux/module.h>#include <linux/pci.h>#include "../../../drivers/pci/pci-sh7751.h"/* * The 7751R RTS7751R2D uses the built-in PCI controller (PCIC) * of the 7751R processor, and has a SuperIO accessible via the PCI. * The board also includes a PCMCIA controller on its memory bus, * like the other Solution Engine boards. */#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 unsigned long port2adr(unsigned int port){	if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)		if (port == 0x3f6)			return (PA_AREA5_IO + 0x80c);		else			return (PA_AREA5_IO + 0x1000 + ((port-0x1f0) << 1));	else		maybebadio(port2adr, (unsigned long)port);	return port;}static inline unsigned long port88796l(unsigned int port, int flag){	unsigned long addr;	if (flag)		addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1);	else		addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1) + 0x1000;	return addr;}/* The 7751R RTS7751R2D seems to have everything hooked *//* up pretty normally (nothing on high-bytes only...) so this *//* shouldn't be needed */static inline int shifted_port(unsigned long port){	/* For IDE registers, value is not shifted */	if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)		return 0;	else		return 1;}/* 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#if defined(CONFIG_NE2000) || defined(CONFIG_NE2000_MODULE)#define CHECK_AX88796L_PORT(port) \  ((port >= AX88796L_IO_BASE) && (port < (AX88796L_IO_BASE+0x20)))#else#define CHECK_AX88796L_PORT(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 rts7751r2d_inb(unsigned long port){	if (CHECK_AX88796L_PORT(port))		return (*(volatile unsigned short *)port88796l(port, 0)) & 0xff;	else if (PXSEG(port))		return *(volatile unsigned char *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		return *(volatile unsigned char *)PCI_IOMAP(port);	else		return (*(volatile unsigned short *)port2adr(port) & 0xff);}unsigned char rts7751r2d_inb_p(unsigned long port){	unsigned char v;	if (CHECK_AX88796L_PORT(port))		v = (*(volatile unsigned short *)port88796l(port, 0)) & 0xff;        else if (PXSEG(port))		v = *(volatile unsigned char *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		v = *(volatile unsigned char *)PCI_IOMAP(port);	else		v = (*(volatile unsigned short *)port2adr(port) & 0xff);	delay();	return v;}unsigned short rts7751r2d_inw(unsigned long port){	if (CHECK_AX88796L_PORT(port))		maybebadio(inw, port);        else if (PXSEG(port))		return *(volatile unsigned short *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		return *(volatile unsigned short *)PCI_IOMAP(port);	else		maybebadio(inw, port);	return 0;}unsigned int rts7751r2d_inl(unsigned long port){	if (CHECK_AX88796L_PORT(port))		maybebadio(inl, port);        else if (PXSEG(port))		return *(volatile unsigned long *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		return *(volatile unsigned long *)PCI_IOMAP(port);	else		maybebadio(inl, port);	return 0;}void rts7751r2d_outb(unsigned char value, unsigned long port){	if (CHECK_AX88796L_PORT(port))		*((volatile unsigned short *)port88796l(port, 0)) = value;        else if (PXSEG(port))		*(volatile unsigned char *)port = value;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		*(volatile unsigned char *)PCI_IOMAP(port) = value;	else		*(volatile unsigned short *)port2adr(port) = value;}void rts7751r2d_outb_p(unsigned char value, unsigned long port){	if (CHECK_AX88796L_PORT(port))		*((volatile unsigned short *)port88796l(port, 0)) = value;        else if (PXSEG(port))		*(volatile unsigned char *)port = value;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		*(volatile unsigned char *)PCI_IOMAP(port) = value;	else		*(volatile unsigned short *)port2adr(port) = value;	delay();}void rts7751r2d_outw(unsigned short value, unsigned long port){	if (CHECK_AX88796L_PORT(port))		maybebadio(outw, port);        else if (PXSEG(port))		*(volatile unsigned short *)port = value;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		*(volatile unsigned short *)PCI_IOMAP(port) = value;	else		maybebadio(outw, port);}void rts7751r2d_outl(unsigned int value, unsigned long port){	if (CHECK_AX88796L_PORT(port))		maybebadio(outl, port);        else if (PXSEG(port))		*(volatile unsigned long *)port = value;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		*(volatile unsigned long *)PCI_IOMAP(port) = value;	else		maybebadio(outl, port);}void rts7751r2d_insb(unsigned long port, void *addr, unsigned long count){	volatile __u8 *bp;	volatile __u16 *p;	if (CHECK_AX88796L_PORT(port)) {		p = (volatile unsigned short *)port88796l(port, 0);		while (count--) *((unsigned char *) addr)++ = *p & 0xff;	} else if (PXSEG(port))		while (count--) *((unsigned char *) addr)++ = *(volatile unsigned char *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {		bp = (__u8 *)PCI_IOMAP(port);		while (count--) *((volatile unsigned char *) addr)++ = *bp;	} else {		p = (volatile unsigned short *)port2adr(port);		while (count--) *((unsigned char *) addr)++ = *p & 0xff;	}}void rts7751r2d_insw(unsigned long port, void *addr, unsigned long count){	volatile __u16 *p;	if (CHECK_AX88796L_PORT(port))		p = (volatile unsigned short *)port88796l(port, 1);	else if (PXSEG(port))		p = (volatile unsigned short *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		p = (volatile unsigned short *)PCI_IOMAP(port);	else		p = (volatile unsigned short *)port2adr(port);	while (count--) *((__u16 *) addr)++ = *p;}void rts7751r2d_insl(unsigned long port, void *addr, unsigned long count){	if (CHECK_AX88796L_PORT(port))		maybebadio(insl, port);	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {		volatile __u32 *p = (__u32 *)PCI_IOMAP(port);		while (count--) *((__u32 *) addr)++ = *p;	} else		maybebadio(insl, port);}void rts7751r2d_outsb(unsigned long port, const void *addr, unsigned long count){	volatile __u8 *bp;	volatile __u16 *p;	if (CHECK_AX88796L_PORT(port)) {		p = (volatile unsigned short *)port88796l(port, 0);		while (count--) *p = *((unsigned char *) addr)++;	} else if (PXSEG(port))		while (count--) *(volatile unsigned char *)port = *((unsigned char *) addr)++;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {		bp = (__u8 *)PCI_IOMAP(port);		while (count--) *bp = *((volatile unsigned char *) addr)++;	} else {		p = (volatile unsigned short *)port2adr(port);		while (count--) *p = *((unsigned char *) addr)++;	}}void rts7751r2d_outsw(unsigned long port, const void *addr, unsigned long count){	volatile __u16 *p;	if (CHECK_AX88796L_PORT(port))		p = (volatile unsigned short *)port88796l(port, 1);	else if (PXSEG(port))		p = (volatile unsigned short *)port;	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))		p = (volatile unsigned short *)PCI_IOMAP(port);	else		p = (volatile unsigned short *)port2adr(port);	while (count--) *p = *((__u16 *) addr)++;}void rts7751r2d_outsl(unsigned long port, const void *addr, unsigned long count){	if (CHECK_AX88796L_PORT(port))		maybebadio(outsl, port);	else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {		volatile __u32 *p = (__u32 *)PCI_IOMAP(port);		while (count--) *p = *((__u32 *) addr)++;	} else		maybebadio(outsl, port);}void *rts7751r2d_ioremap(unsigned long offset, unsigned long size){	if (offset >= 0xfd000000)		return (void *)offset;	else		return (void *)P2SEGADDR(offset);}EXPORT_SYMBOL(rts7751r2d_ioremap);unsigned long rts7751r2d_isa_port2addr(unsigned long offset){	return port2adr(offset);}