142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/******************************************************************************
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* Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
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*
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* Based on the r8180 driver, which is:
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* Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, et al.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* wlanfae <wlanfae@realtek.com>
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******************************************************************************/
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#include "rtl_core.h"
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#include "rtl_eeprom.h"
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void eprom_cs(struct net_device *dev, short bit)
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{
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if (bit)
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write_nic_byte(dev, EPROM_CMD,
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(1<<EPROM_CS_SHIFT) | \
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read_nic_byte(dev, EPROM_CMD));
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else
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write_nic_byte(dev, EPROM_CMD, read_nic_byte(dev, EPROM_CMD)\
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&~(1<<EPROM_CS_SHIFT));
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udelay(EPROM_DELAY);
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}
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void eprom_ck_cycle(struct net_device *dev)
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{
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write_nic_byte(dev, EPROM_CMD,
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(1<<EPROM_CK_SHIFT) | read_nic_byte(dev,EPROM_CMD));
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udelay(EPROM_DELAY);
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write_nic_byte(dev, EPROM_CMD,
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read_nic_byte(dev, EPROM_CMD) &~ (1<<EPROM_CK_SHIFT));
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udelay(EPROM_DELAY);
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}
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void eprom_w(struct net_device *dev,short bit)
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{
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if (bit)
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write_nic_byte(dev, EPROM_CMD, (1<<EPROM_W_SHIFT) | \
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read_nic_byte(dev,EPROM_CMD));
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else
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write_nic_byte(dev, EPROM_CMD, read_nic_byte(dev,EPROM_CMD)\
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&~(1<<EPROM_W_SHIFT));
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udelay(EPROM_DELAY);
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}
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short eprom_r(struct net_device *dev)
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{
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short bit;
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bit=(read_nic_byte(dev, EPROM_CMD) & (1<<EPROM_R_SHIFT) );
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udelay(EPROM_DELAY);
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if (bit)
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return 1;
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return 0;
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}
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void eprom_send_bits_string(struct net_device *dev, short b[], int len)
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{
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int i;
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for (i=0; i<len; i++){
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eprom_w(dev, b[i]);
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eprom_ck_cycle(dev);
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}
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}
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u32 eprom_read(struct net_device *dev, u32 addr)
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{
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struct r8192_priv *priv = rtllib_priv(dev);
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short read_cmd[]={1,1,0};
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short addr_str[8];
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int i;
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int addr_len;
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u32 ret;
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ret=0;
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write_nic_byte(dev, EPROM_CMD,
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(EPROM_CMD_PROGRAM<<EPROM_CMD_OPERATING_MODE_SHIFT));
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udelay(EPROM_DELAY);
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if (priv->epromtype==EEPROM_93C56){
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addr_str[7]=addr & 1;
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addr_str[6]=addr & (1<<1);
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addr_str[5]=addr & (1<<2);
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addr_str[4]=addr & (1<<3);
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addr_str[3]=addr & (1<<4);
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addr_str[2]=addr & (1<<5);
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addr_str[1]=addr & (1<<6);
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addr_str[0]=addr & (1<<7);
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addr_len=8;
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}else{
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addr_str[5]=addr & 1;
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addr_str[4]=addr & (1<<1);
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addr_str[3]=addr & (1<<2);
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addr_str[2]=addr & (1<<3);
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addr_str[1]=addr & (1<<4);
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addr_str[0]=addr & (1<<5);
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addr_len=6;
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}
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eprom_cs(dev, 1);
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eprom_ck_cycle(dev);
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eprom_send_bits_string(dev, read_cmd, 3);
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eprom_send_bits_string(dev, addr_str, addr_len);
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eprom_w(dev, 0);
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for (i = 0; i < 16; i++){
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eprom_ck_cycle(dev);
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ret |= (eprom_r(dev)<<(15-i));
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}
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eprom_cs(dev, 0);
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eprom_ck_cycle(dev);
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write_nic_byte(dev, EPROM_CMD,
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(EPROM_CMD_NORMAL<<EPROM_CMD_OPERATING_MODE_SHIFT));
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return ret;
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}
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