1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* File: srom.c
*
* Purpose:Implement functions to access eeprom
*
* Author: Jerry Chen
*
* Date: Jan 29, 2003
*
* Functions:
* SROMbyReadEmbedded - Embedded read eeprom via MAC
* SROMbWriteEmbedded - Embedded write eeprom via MAC
* SROMvRegBitsOn - Set Bits On in eeprom
* SROMvRegBitsOff - Clear Bits Off in eeprom
* SROMbIsRegBitsOn - Test if Bits On in eeprom
* SROMbIsRegBitsOff - Test if Bits Off in eeprom
* SROMvReadAllContents - Read all contents in eeprom
* SROMvWriteAllContents - Write all contents in eeprom
* SROMvReadEtherAddress - Read Ethernet Address in eeprom
* SROMvWriteEtherAddress - Write Ethernet Address in eeprom
* SROMvReadSubSysVenId - Read Sub_VID and Sub_SysId in eeprom
* SROMbAutoLoad - Auto Load eeprom to MAC register
*
* Revision History:
*
*/
#include "upc.h"
#include "tmacro.h"
#include "mac.h"
#include "srom.h"
/*--------------------- Static Definitions -------------------------*/
/*--------------------- Static Classes ----------------------------*/
/*--------------------- Static Variables --------------------------*/
/*--------------------- Static Functions --------------------------*/
/*--------------------- Export Variables --------------------------*/
/*--------------------- Export Functions --------------------------*/
/*
* Description: Read a byte from EEPROM, by MAC I2C
*
* Parameters:
* In:
* iobase - I/O base address
* byContntOffset - address of EEPROM
* Out:
* none
*
* Return Value: data read
*
*/
unsigned char SROMbyReadEmbedded(void __iomem *iobase,
unsigned char byContntOffset)
{
unsigned short wDelay, wNoACK;
unsigned char byWait;
unsigned char byData;
unsigned char byOrg;
byData = 0xFF;
VNSvInPortB(iobase + MAC_REG_I2MCFG, &byOrg);
/* turn off hardware retry for getting NACK */
VNSvOutPortB(iobase + MAC_REG_I2MCFG, (byOrg & (~I2MCFG_NORETRY)));
for (wNoACK = 0; wNoACK < W_MAX_I2CRETRY; wNoACK++) {
VNSvOutPortB(iobase + MAC_REG_I2MTGID, EEP_I2C_DEV_ID);
VNSvOutPortB(iobase + MAC_REG_I2MTGAD, byContntOffset);
/* issue read command */
VNSvOutPortB(iobase + MAC_REG_I2MCSR, I2MCSR_EEMR);
/* wait DONE be set */
for (wDelay = 0; wDelay < W_MAX_TIMEOUT; wDelay++) {
VNSvInPortB(iobase + MAC_REG_I2MCSR, &byWait);
if (byWait & (I2MCSR_DONE | I2MCSR_NACK))
break;
PCAvDelayByIO(CB_DELAY_LOOP_WAIT);
}
if ((wDelay < W_MAX_TIMEOUT) &&
(!(byWait & I2MCSR_NACK))) {
break;
}
}
VNSvInPortB(iobase + MAC_REG_I2MDIPT, &byData);
VNSvOutPortB(iobase + MAC_REG_I2MCFG, byOrg);
return byData;
}
/*
* Description: Read all contents of eeprom to buffer
*
* Parameters:
* In:
* iobase - I/O base address
* Out:
* pbyEepromRegs - EEPROM content Buffer
*
* Return Value: none
*
*/
void SROMvReadAllContents(void __iomem *iobase, unsigned char *pbyEepromRegs)
{
int ii;
/* ii = Rom Address */
for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) {
*pbyEepromRegs = SROMbyReadEmbedded(iobase,
(unsigned char)ii);
pbyEepromRegs++;
}
}
/*
* Description: Read Ethernet Address from eeprom to buffer
*
* Parameters:
* In:
* iobase - I/O base address
* Out:
* pbyEtherAddress - Ethernet Address buffer
*
* Return Value: none
*
*/
void SROMvReadEtherAddress(void __iomem *iobase,
unsigned char *pbyEtherAddress)
{
unsigned char ii;
/* ii = Rom Address */
for (ii = 0; ii < ETH_ALEN; ii++) {
*pbyEtherAddress = SROMbyReadEmbedded(iobase, ii);
pbyEtherAddress++;
}
}
|
