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/*
* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
* Based largely on io_se.c.
*
* I/O routine for Hitachi 7751 SolutionEngine.
*
* Initial version only to support LAN access; some
* placeholder code from io_se.c left in with the
* expectation of later SuperIO and PCMCIA access.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <mach-se/mach/se7751.h>
#include <asm/addrspace.h>
static inline volatile u16 *port2adr(unsigned int port)
{
if (port >= 0x2000)
return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
maybebadio((unsigned long)port);
return (volatile __u16*)port;
}
/*
* 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 sh7751se_inb(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned char *)port;
else
return (*port2adr(port)) & 0xff;
}
unsigned char sh7751se_inb_p(unsigned long port)
{
unsigned char v;
if (PXSEG(port))
v = *(volatile unsigned char *)port;
else
v = (*port2adr(port)) & 0xff;
ctrl_delay();
return v;
}
unsigned short sh7751se_inw(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned short *)port;
else if (port >= 0x2000)
return *port2adr(port);
else
maybebadio(port);
return 0;
}
unsigned int sh7751se_inl(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned long *)port;
else if (port >= 0x2000)
return *port2adr(port);
else
maybebadio(port);
return 0;
}
void sh7751se_outb(unsigned char value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned char *)port = value;
else
*(port2adr(port)) = value;
}
void sh7751se_outb_p(unsigned char value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned char *)port = value;
else
*(port2adr(port)) = value;
ctrl_delay();
}
void sh7751se_outw(unsigned short value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned short *)port = value;
else if (port >= 0x2000)
*port2adr(port) = value;
else
maybebadio(port);
}
void sh7751se_outl(unsigned int value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned long *)port = value;
else
maybebadio(port);
}
void sh7751se_insl(unsigned long port, void *addr, unsigned long count)
{
maybebadio(port);
}
void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count)
{
maybebadio(port);
}
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