hw_pcnet_reset.c

来自「QNX ADS BSP code for i.MX27 chips」· C语言 代码 · 共 48 行

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $
 */

 
 #include "startup.h"
#include <hw/inout.h>

//
// Make sure the ethernet isn't generating any interrupts or receiving
// data.
//

#define PCNET_RDP				0x10
#define PCNET_RAP				0x12
#define PCNET_CSR0 				0
#define PCNET_CSR0_STOP 		0x0004

void
pcnet_reset(paddr_t base, int mem_mapped) {
	uintptr_t	io_base;

	io_base = startup_io_map(0x100, base);

	outle16(io_base + PCNET_RAP, PCNET_CSR0);
	outle16(io_base + PCNET_RDP, PCNET_CSR0_STOP);

	startup_io_unmap(io_base);
}