/* * include/asm-sh/io_bigsur.c * * By Dustin McIntire (dustin@sensoria.com) (c)2001 * Derived from io_hd64465.h, which bore the message: * By Greg Banks <gbanks@pocketpenguins.com> * (c) 2000 PocketPenguins Inc.  * and from io_hd64461.h, which bore the message: * Copyright 2000 Stuart Menefy (stuart.menefy@st.com) * * May be copied or modified under the terms of the GNU General Public * License.  See linux/COPYING for more information. * * IO functions for a Hitachi Big Sur Evaluation Board. */#include <linux/config.h>#include <linux/kernel.h>#include <linux/module.h>#include <asm/machvec.h>#include <asm/io.h>#include <asm/bigsur.h>//#define BIGSUR_DEBUG 2#undef BIGSUR_DEBUG#ifdef BIGSUR_DEBUG#define DPRINTK(args...)	printk(args)#define DIPRINTK(n, args...)	if (BIGSUR_DEBUG>(n)) printk(args)#else#define DPRINTK(args...)#define DIPRINTK(n, args...)#endif/* Low iomap maps port 0-1K to addresses in 8byte chunks */#define BIGSUR_IOMAP_LO_THRESH 0x400#define BIGSUR_IOMAP_LO_SHIFT	3#define BIGSUR_IOMAP_LO_MASK	((1<<BIGSUR_IOMAP_LO_SHIFT)-1)#define BIGSUR_IOMAP_LO_NMAP	(BIGSUR_IOMAP_LO_THRESH>>BIGSUR_IOMAP_LO_SHIFT)static u32 bigsur_iomap_lo[BIGSUR_IOMAP_LO_NMAP];static u8 bigsur_iomap_lo_shift[BIGSUR_IOMAP_LO_NMAP];/* High iomap maps port 1K-64K to addresses in 1K chunks */#define BIGSUR_IOMAP_HI_THRESH 0x10000#define BIGSUR_IOMAP_HI_SHIFT	10#define BIGSUR_IOMAP_HI_MASK	((1<<BIGSUR_IOMAP_HI_SHIFT)-1)#define BIGSUR_IOMAP_HI_NMAP	(BIGSUR_IOMAP_HI_THRESH>>BIGSUR_IOMAP_HI_SHIFT)static u32 bigsur_iomap_hi[BIGSUR_IOMAP_HI_NMAP];static u8 bigsur_iomap_hi_shift[BIGSUR_IOMAP_HI_NMAP];#ifndef MAX#define MAX(a,b)    ((a)>(b)?(a):(b))#endif#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))void bigsur_port_map(u32 baseport, u32 nports, u32 addr, u8 shift){    u32 port, endport = baseport + nports;    DPRINTK("bigsur_port_map(base=0x%0x, n=0x%0x, addr=0x%08x)\n",	    baseport, nports, addr);	    	for (port = baseport ;	     port < endport && port < BIGSUR_IOMAP_LO_THRESH ;	     port += (1<<BIGSUR_IOMAP_LO_SHIFT)) {	    	DPRINTK("    maplo[0x%x] = 0x%08x\n", port, addr);    	    bigsur_iomap_lo[port>>BIGSUR_IOMAP_LO_SHIFT] = addr;    	    bigsur_iomap_lo_shift[port>>BIGSUR_IOMAP_LO_SHIFT] = shift;	    	addr += (1<<(BIGSUR_IOMAP_LO_SHIFT));	}	for (port = MAX(baseport, BIGSUR_IOMAP_LO_THRESH) ;	     port < endport && port < BIGSUR_IOMAP_HI_THRESH ;	     port += (1<<BIGSUR_IOMAP_HI_SHIFT)) {	    	DPRINTK("    maphi[0x%x] = 0x%08x\n", port, addr);    	    bigsur_iomap_hi[port>>BIGSUR_IOMAP_HI_SHIFT] = addr;    	    bigsur_iomap_hi_shift[port>>BIGSUR_IOMAP_HI_SHIFT] = shift;	    	addr += (1<<(BIGSUR_IOMAP_HI_SHIFT));	}}EXPORT_SYMBOL(bigsur_port_map);void bigsur_port_unmap(u32 baseport, u32 nports){    u32 port, endport = baseport + nports;	    DPRINTK("bigsur_port_unmap(base=0x%0x, n=0x%0x)\n", baseport, nports);	for (port = baseport ;	     port < endport && port < BIGSUR_IOMAP_LO_THRESH ;	     port += (1<<BIGSUR_IOMAP_LO_SHIFT)) {    	    bigsur_iomap_lo[port>>BIGSUR_IOMAP_LO_SHIFT] = 0;	}	for (port = MAX(baseport, BIGSUR_IOMAP_LO_THRESH) ;	     port < endport && port < BIGSUR_IOMAP_HI_THRESH ;	     port += (1<<BIGSUR_IOMAP_HI_SHIFT)) {    	    bigsur_iomap_hi[port>>BIGSUR_IOMAP_HI_SHIFT] = 0;	}}EXPORT_SYMBOL(bigsur_port_unmap);unsigned long bigsur_isa_port2addr(unsigned long port){    unsigned long addr = 0;	unsigned char shift;	/* Physical address not in P0, do nothing */	if (PXSEG(port)) addr = port;	/* physical address in P0, map to P2 */	else if (port >= 0x30000)	    addr = P2SEGADDR(port);	/* Big Sur I/O + HD64465 registers 0x10000-0x30000 */	else if (port >= BIGSUR_IOMAP_HI_THRESH)	    addr = BIGSUR_INTERNAL_BASE + (port - BIGSUR_IOMAP_HI_THRESH);	/* Handle remapping of high IO/PCI IO ports */	else if (port >= BIGSUR_IOMAP_LO_THRESH) {	    addr = bigsur_iomap_hi[port >> BIGSUR_IOMAP_HI_SHIFT];	    shift = bigsur_iomap_hi_shift[port >> BIGSUR_IOMAP_HI_SHIFT];	    if (addr != 0)		    addr += (port & BIGSUR_IOMAP_HI_MASK) << shift;	}	/* Handle remapping of low IO ports */	else {	    addr = bigsur_iomap_lo[port >> BIGSUR_IOMAP_LO_SHIFT];	    shift = bigsur_iomap_lo_shift[port >> BIGSUR_IOMAP_LO_SHIFT];	    if (addr != 0)	    	addr += (port & BIGSUR_IOMAP_LO_MASK) << shift;	}    DIPRINTK(2, "PORT2ADDR(0x%08lx) = 0x%08lx\n", port, addr);	return addr;}static inline void delay(void){	ctrl_inw(0xa0000000);}unsigned char bigsur_inb(unsigned long port){	unsigned long addr = PORT2ADDR(port);	unsigned long b = (addr == 0 ? 0 : *(volatile unsigned char*)addr);	DIPRINTK(0, "inb(%08lx) = %02x\n", addr, (unsigned)b);	return b;}unsigned char bigsur_inb_p(unsigned long port){    unsigned long v;	unsigned long addr = PORT2ADDR(port);	v = (addr == 0 ? 0 : *(volatile unsigned char*)addr);	delay();	DIPRINTK(0, "inb_p(%08lx) = %02x\n", addr, (unsigned)v);	return v;}unsigned short bigsur_inw(unsigned long port){    unsigned long addr = PORT2ADDR(port);	unsigned long b = (addr == 0 ? 0 : *(volatile unsigned short*)addr);	DIPRINTK(0, "inw(%08lx) = %04lx\n", addr, b);	return b;}unsigned int bigsur_inl(unsigned long port){    unsigned long addr = PORT2ADDR(port);	unsigned int b = (addr == 0 ? 0 : *(volatile unsigned long*)addr);	DIPRINTK(0, "inl(%08lx) = %08x\n", addr, b);	return b;}void bigsur_insb(unsigned long port, void *buffer, unsigned long count){	unsigned char *buf=buffer;	while(count--) *buf++=inb(port);}void bigsur_insw(unsigned long port, void *buffer, unsigned long count){	unsigned short *buf=buffer;	while(count--) *buf++=inw(port);}void bigsur_insl(unsigned long port, void *buffer, unsigned long count){	unsigned long *buf=buffer;	while(count--) *buf++=inl(port);}void bigsur_outb(unsigned char b, unsigned long port){	unsigned long addr = PORT2ADDR(port);	DIPRINTK(0, "outb(%02x, %08lx)\n", (unsigned)b, addr);	if (addr != 0)	    *(volatile unsigned char*)addr = b;}void bigsur_outb_p(unsigned char b, unsigned long port){	unsigned long addr = PORT2ADDR(port);	DIPRINTK(0, "outb_p(%02x, %08lx)\n", (unsigned)b, addr);    if (addr != 0)	    *(volatile unsigned char*)addr = b;	delay();}void bigsur_outw(unsigned short b, unsigned long port){	unsigned long addr = PORT2ADDR(port);	DIPRINTK(0, "outw(%04x, %08lx)\n", (unsigned)b, addr);	if (addr != 0)	    *(volatile unsigned short*)addr = b;}void bigsur_outl(unsigned int b, unsigned long port){	unsigned long addr = PORT2ADDR(port);	DIPRINTK(0, "outl(%08x, %08lx)\n", b, addr);	if (addr != 0)            *(volatile unsigned long*)addr = b;}void bigsur_outsb(unsigned long port, const void *buffer, unsigned long count){	const unsigned char *buf=buffer;	while(count--) outb(*buf++, port);}void bigsur_outsw(unsigned long port, const void *buffer, unsigned long count){	const unsigned short *buf=buffer;	while(count--) outw(*buf++, port);}void bigsur_outsl(unsigned long port, const void *buffer, unsigned long count){	const unsigned long *buf=buffer;	while(count--) outl(*buf++, port);}