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// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/m32r/platforms/m32104ut/io.c
*
* Typical I/O routines for M32104UT board.
*
* Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata,
* Hitoshi Yamamoto, Mamoru Sakugawa,
* Naoto Sugai, Hayato Fujiwara
*/
#include <asm/m32r.h>
#include <asm/page.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
#include <linux/types.h>
#define M32R_PCC_IOMAP_SIZE 0x1000
#define M32R_PCC_IOSTART0 0x1000
#define M32R_PCC_IOEND0 (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
#endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
#define PORT2ADDR(port) _port2addr(port)
static inline void *_port2addr(unsigned long port)
{
return (void *)(port | NONCACHE_OFFSET);
}
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
static inline void *__port2addr_ata(unsigned long port)
{
static int dummy_reg;
switch (port) {
case 0x1f0: return (void *)(0x0c002000 | NONCACHE_OFFSET);
case 0x1f1: return (void *)(0x0c012800 | NONCACHE_OFFSET);
case 0x1f2: return (void *)(0x0c012002 | NONCACHE_OFFSET);
case 0x1f3: return (void *)(0x0c012802 | NONCACHE_OFFSET);
case 0x1f4: return (void *)(0x0c012004 | NONCACHE_OFFSET);
case 0x1f5: return (void *)(0x0c012804 | NONCACHE_OFFSET);
case 0x1f6: return (void *)(0x0c012006 | NONCACHE_OFFSET);
case 0x1f7: return (void *)(0x0c012806 | NONCACHE_OFFSET);
case 0x3f6: return (void *)(0x0c01200e | NONCACHE_OFFSET);
default: return (void *)&dummy_reg;
}
}
#endif
/*
* M32104T-LAN is located in the extended bus space
* from 0x01000000 to 0x01ffffff on physical address.
* The base address of LAN controller(LAN91C111) is 0x300.
*/
#define LAN_IOSTART (0x300 | NONCACHE_OFFSET)
#define LAN_IOEND (0x320 | NONCACHE_OFFSET)
static inline void *_port2addr_ne(unsigned long port)
{
return (void *)(port + NONCACHE_OFFSET + 0x01000000);
}
static inline void delay(void)
{
__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
}
/*
* NIC I/O function
*/
#define PORT2ADDR_NE(port) _port2addr_ne(port)
static inline unsigned char _ne_inb(void *portp)
{
return *(volatile unsigned char *)portp;
}
static inline unsigned short _ne_inw(void *portp)
{
return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
}
static inline void _ne_insb(void *portp, void *addr, unsigned long count)
{
unsigned char *buf = (unsigned char *)addr;
while (count--)
*buf++ = _ne_inb(portp);
}
static inline void _ne_outb(unsigned char b, void *portp)
{
*(volatile unsigned char *)portp = b;
}
static inline void _ne_outw(unsigned short w, void *portp)
{
*(volatile unsigned short *)portp = cpu_to_le16(w);
}
unsigned char _inb(unsigned long port)
{
if (port >= LAN_IOSTART && port < LAN_IOEND)
return _ne_inb(PORT2ADDR_NE(port));
return *(volatile unsigned char *)PORT2ADDR(port);
}
unsigned short _inw(unsigned long port)
{
if (port >= LAN_IOSTART && port < LAN_IOEND)
return _ne_inw(PORT2ADDR_NE(port));
return *(volatile unsigned short *)PORT2ADDR(port);
}
unsigned long _inl(unsigned long port)
{
return *(volatile unsigned long *)PORT2ADDR(port);
}
unsigned char _inb_p(unsigned long port)
{
unsigned char v = _inb(port);
delay();
return (v);
}
unsigned short _inw_p(unsigned long port)
{
unsigned short v = _inw(port);
delay();
return (v);
}
unsigned long _inl_p(unsigned long port)
{
unsigned long v = _inl(port);
delay();
return (v);
}
void _outb(unsigned char b, unsigned long port)
{
if (port >= LAN_IOSTART && port < LAN_IOEND)
_ne_outb(b, PORT2ADDR_NE(port));
else
*(volatile unsigned char *)PORT2ADDR(port) = b;
}
void _outw(unsigned short w, unsigned long port)
{
if (port >= LAN_IOSTART && port < LAN_IOEND)
_ne_outw(w, PORT2ADDR_NE(port));
else
*(volatile unsigned short *)PORT2ADDR(port) = w;
}
void _outl(unsigned long l, unsigned long port)
{
*(volatile unsigned long *)PORT2ADDR(port) = l;
}
void _outb_p(unsigned char b, unsigned long port)
{
_outb(b, port);
delay();
}
void _outw_p(unsigned short w, unsigned long port)
{
_outw(w, port);
delay();
}
void _outl_p(unsigned long l, unsigned long port)
{
_outl(l, port);
delay();
}
void _insb(unsigned int port, void *addr, unsigned long count)
{
if (port >= LAN_IOSTART && port < LAN_IOEND)
_ne_insb(PORT2ADDR_NE(port), addr, count);
else {
unsigned char *buf = addr;
unsigned char *portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned char *)portp;
}
}
void _insw(unsigned int port, void *addr, unsigned long count)
{
unsigned short *buf = addr;
unsigned short *portp;
if (port >= LAN_IOSTART && port < LAN_IOEND) {
/*
* This portion is only used by smc91111.c to read data
* from the DATA_REG. Do not swap the data.
*/
portp = PORT2ADDR_NE(port);
while (count--)
*buf++ = *(volatile unsigned short *)portp;
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
count, 1);
#endif
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
} else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
portp = __port2addr_ata(port);
while (count--)
*buf++ = *(volatile unsigned short *)portp;
#endif
} else {
portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned short *)portp;
}
}
void _insl(unsigned int port, void *addr, unsigned long count)
{
unsigned long *buf = addr;
unsigned long *portp;
portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned long *)portp;
}
void _outsb(unsigned int port, const void *addr, unsigned long count)
{
const unsigned char *buf = addr;
unsigned char *portp;
if (port >= LAN_IOSTART && port < LAN_IOEND) {
portp = PORT2ADDR_NE(port);
while (count--)
_ne_outb(*buf++, portp);
} else {
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned char *)portp = *buf++;
}
}
void _outsw(unsigned int port, const void *addr, unsigned long count)
{
const unsigned short *buf = addr;
unsigned short *portp;
if (port >= LAN_IOSTART && port < LAN_IOEND) {
/*
* This portion is only used by smc91111.c to write data
* into the DATA_REG. Do not swap the data.
*/
portp = PORT2ADDR_NE(port);
while (count--)
*(volatile unsigned short *)portp = *buf++;
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
} else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
portp = __port2addr_ata(port);
while (count--)
*(volatile unsigned short *)portp = *buf++;
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
count, 1);
#endif
} else {
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned short *)portp = *buf++;
}
}
void _outsl(unsigned int port, const void *addr, unsigned long count)
{
const unsigned long *buf = addr;
unsigned char *portp;
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned long *)portp = *buf++;
}
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