minix/drivers/dpeth/devio.c
2010-03-30 14:07:15 +00:00

107 lines
2.3 KiB
C

/*
** File: devio.c Jun. 11, 2005
**
** Author: Giovanni Falzoni <gfalzoni@inwind.it>
**
** This file contains the routines for readind/writing
** from/to the device registers.
**
** $Id$
*/
#include <minix/drivers.h>
#include <net/gen/ether.h>
#include <net/gen/eth_io.h>
#include "dp.h"
#if (USE_IOPL == 0)
static void warning(const char *type, int err)
{
printf("Warning: eth#0 sys_%s failed (%d)\n", type, err);
return;
}
/*
** Name: unsigned int inb(unsigned short int port);
** Function: Reads a byte from specified i/o port.
*/
PUBLIC unsigned int inb(unsigned short port)
{
unsigned long value;
int rc;
if ((rc = sys_inb(port, &value)) != OK) warning("inb", rc);
return value;
}
/*
** Name: unsigned int inw(unsigned short int port);
** Function: Reads a word from specified i/o port.
*/
PUBLIC unsigned int inw(unsigned short port)
{
unsigned long value;
int rc;
if ((rc = sys_inw(port, &value)) != OK) warning("inw", rc);
return value;
}
/*
** Name: unsigned int insb(unsigned short int port, int proc_nr, void *buffer, int count);
** Function: Reads a sequence of bytes from specified i/o port to user space buffer.
*/
PUBLIC void insb(unsigned short int port, endpoint_t proc_nr,
void *buffer, int count)
{
int rc;
if ((rc = sys_insb(port, proc_nr, buffer, count)) != OK)
warning("insb", rc);
return;
}
/*
** Name: void outb(unsigned short int port, unsigned long value);
** Function: Writes a byte to specified i/o port.
*/
PUBLIC void outb(unsigned short port, unsigned long value)
{
int rc;
if ((rc = sys_outb(port, value)) != OK) warning("outb", rc);
return;
}
/*
** Name: void outw(unsigned short int port, unsigned long value);
** Function: Writes a word to specified i/o port.
*/
PUBLIC void outw(unsigned short port, unsigned long value)
{
int rc;
if ((rc = sys_outw(port, value)) != OK) warning("outw", rc);
return;
}
/*
** Name: void outsb(unsigned short int port, int proc_nr, void *buffer, int count);
** Function: Writes a sequence of bytes from user space to specified i/o port.
*/
PUBLIC void outsb(unsigned short port, endpoint_t proc_nr, void *buffer, int count)
{
int rc;
if ((rc = sys_outsb(port, proc_nr, buffer, count)) != OK)
warning("outsb", rc);
return;
}
#else
#error To be implemented
#endif /* USE_IOPL */
/** devio.c **/