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/*
* linux/arch/sh/kernel/io_hs7751rvoip.c
*
* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
* Based largely on io_se.c.
*
* I/O routine for Renesas Technology sales HS7751RVoIP
*
* Initial version only to support LAN access; some
* placeholder code from io_hs7751rvoip.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/hs7751rvoip/hs7751rvoip.h>
#include <asm/addrspace.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "../../../drivers/pci/pci-sh7751.h"
extern void *area6_io8_base; /* Area 6 8bit I/O Base address */
extern void *area5_io16_base; /* Area 5 16bit I/O Base address */
/*
* The 7751R HS7751RVoIP 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 CODEC_IO_BASE 0x1000
#define CODEC_IOMAP(a) ((unsigned long)area6_io8_base + ((a) - CODEC_IO_BASE))
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 ((unsigned long)area5_io16_base + 0x0c);
else
return ((unsigned long)area5_io16_base + 0x800 + ((port-0x1f0) << 1));
else
maybebadio((unsigned long)port);
return port;
}
/* The 7751R HS7751RVoIP 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;
}
#if defined(CONFIG_HS7751RVOIP_CODEC)
static inline int
codec_port(unsigned long port)
{
if (CODEC_IO_BASE <= port && port < (CODEC_IO_BASE+0x20))
return 1;
else
return 0;
}
#endif
/* 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 hs7751rvoip_inb(unsigned long port)
{
if (PXSEG(port))
return ctrl_inb(port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
return ctrl_inb(CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
return ctrl_inb(PCI_IOMAP(port));
else
return ctrl_inw(port2adr(port)) & 0xff;
}
unsigned char hs7751rvoip_inb_p(unsigned long port)
{
unsigned char v;
if (PXSEG(port))
v = ctrl_inb(port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
v = ctrl_inb(CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
v = ctrl_inb(PCI_IOMAP(port));
else
v = ctrl_inw(port2adr(port)) & 0xff;
delay();
return v;
}
unsigned short hs7751rvoip_inw(unsigned long port)
{
if (PXSEG(port))
return ctrl_inw(port);
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
return ctrl_inw(PCI_IOMAP(port));
else
maybebadio(port);
return 0;
}
unsigned int hs7751rvoip_inl(unsigned long port)
{
if (PXSEG(port))
return ctrl_inl(port);
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
return ctrl_inl(PCI_IOMAP(port));
else
maybebadio(port);
return 0;
}
void hs7751rvoip_outb(unsigned char value, unsigned long port)
{
if (PXSEG(port))
ctrl_outb(value, port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
ctrl_outb(value, CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
ctrl_outb(value, PCI_IOMAP(port));
else
ctrl_outb(value, port2adr(port));
}
void hs7751rvoip_outb_p(unsigned char value, unsigned long port)
{
if (PXSEG(port))
ctrl_outb(value, port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
ctrl_outb(value, CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
ctrl_outb(value, PCI_IOMAP(port));
else
ctrl_outw(value, port2adr(port));
delay();
}
void hs7751rvoip_outw(unsigned short value, unsigned long port)
{
if (PXSEG(port))
ctrl_outw(value, port);
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
ctrl_outw(value, PCI_IOMAP(port));
else
maybebadio(port);
}
void hs7751rvoip_outl(unsigned int value, unsigned long port)
{
if (PXSEG(port))
ctrl_outl(value, port);
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
ctrl_outl(value, PCI_IOMAP(port));
else
maybebadio(port);
}
void hs7751rvoip_insb(unsigned long port, void *addr, unsigned long count)
{
u8 *buf = addr;
if (PXSEG(port))
while (count--)
*buf++ = ctrl_inb(port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
while (count--)
*buf++ = ctrl_inb(CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {
volatile u8 *bp = (volatile u8 *)PCI_IOMAP(port);
while (count--)
*buf++ = *bp;
} else {
volatile u16 *p = (volatile u16 *)port2adr(port);
while (count--)
*buf++ = *p & 0xff;
}
}
void hs7751rvoip_insw(unsigned long port, void *addr, unsigned long count)
{
volatile u16 *p;
u16 *buf = addr;
if (PXSEG(port))
p = (volatile u16 *)port;
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
p = (volatile u16 *)PCI_IOMAP(port);
else
p = (volatile u16 *)port2adr(port);
while (count--)
*buf++ = *p;
}
void hs7751rvoip_insl(unsigned long port, void *addr, unsigned long count)
{
if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {
volatile u32 *p = (volatile u32 *)PCI_IOMAP(port);
u32 *buf = addr;
while (count--)
*buf++ = *p;
} else
maybebadio(port);
}
void hs7751rvoip_outsb(unsigned long port, const void *addr, unsigned long count)
{
const u8 *buf = addr;
if (PXSEG(port))
while (count--)
ctrl_outb(*buf++, port);
#if defined(CONFIG_HS7751RVOIP_CODEC)
else if (codec_port(port))
while (count--)
ctrl_outb(*buf++, CODEC_IOMAP(port));
#endif
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {
volatile u8 *bp = (volatile u8 *)PCI_IOMAP(port);
while (count--)
*bp = *buf++;
} else {
volatile u16 *p = (volatile u16 *)port2adr(port);
while (count--)
*p = *buf++;
}
}
void hs7751rvoip_outsw(unsigned long port, const void *addr, unsigned long count)
{
volatile u16 *p;
const u16 *buf = addr;
if (PXSEG(port))
p = (volatile u16 *)port;
else if (CHECK_SH7751_PCIIO(port) || shifted_port(port))
p = (volatile u16 *)PCI_IOMAP(port);
else
p = (volatile u16 *)port2adr(port);
while (count--)
*p = *buf++;
}
void hs7751rvoip_outsl(unsigned long port, const void *addr, unsigned long count)
{
const u32 *buf = addr;
if (CHECK_SH7751_PCIIO(port) || shifted_port(port)) {
volatile u32 *p = (volatile u32 *)PCI_IOMAP(port);
while (count--)
*p = *buf++;
} else
maybebadio(port);
}
void __iomem *hs7751rvoip_ioport_map(unsigned long port, unsigned int size)
{
if (PXSEG(port))
return (void __iomem *)port;
else if (unlikely(codec_port(port) && (size == 1)))
return (void __iomem *)CODEC_IOMAP(port);
else if (CHECK_SH7751_PCIIO(port))
return (void __iomem *)PCI_IOMAP(port);
return (void __iomem *)port2adr(port);
}
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