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/*
* 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);
}
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