clients/net-snk/oflib/pci.c

/******************************************************************************
 * Copyright (c) 2004, 2008 IBM Corporation
 * All rights reserved.
 * This program and the accompanying materials
 * are made available under the terms of the BSD License
 * which accompanies this distribution, and is available at
 * http://www.opensource.org/licenses/bsd-license.php
 *
 * Contributors:
 *     IBM Corporation - initial implementation
 *****************************************************************************/

#include <stdint.h>
#include <rtas.h>
#include <of.h>
#include <pci.h>
#include <string.h>
#include <kernel.h>
#include <cpu.h>
#include <cache.h>

unsigned int read_io(void *addr, size_t sz)
{
	unsigned int ret;

	switch (sz) {
	case 1:
		ret = ci_read_8(addr);
		break;
	case 2:
		ret = ci_read_16(addr);
		break;
	case 4:
		ret = ci_read_32(addr);
		break;
	default:
		ret = 0;
	}

	return ret;
}

int write_io(void *addr, unsigned int value, size_t sz)
{
	switch (sz) {
	case 1:
		ci_write_8(addr, value);
		break;
	case 2:
		ci_write_16(addr, value);
		break;
	case 4:
		ci_write_32(addr, value);
		break;
	default:
		return -1;
	}

	return 0;
}