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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
*
* (C) Copyright 2003
* Author : Hamid Ikdoumi (Atmel)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Adapted for KwikByte KB920x board: 22APR2005
*/
#include <common.h>
#include <at91rm9200_net.h>
#include <net.h>
#include <lxt971a.h>
#ifdef CONFIG_DRIVER_ETHER
#if (CONFIG_COMMANDS & CFG_CMD_NET)
/*
* Name:
* lxt972_IsPhyConnected
* Description:
* Reads the 2 PHY ID registers
* Arguments:
* p_mac - pointer to AT91S_EMAC struct
* Return value:
* TRUE - if id read successfully
* FALSE- if error
*/
unsigned int lxt972_IsPhyConnected (AT91PS_EMAC p_mac)
{
unsigned short Id1, Id2;
at91rm9200_EmacEnableMDIO (p_mac);
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID1, &Id1);
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID2, &Id2);
at91rm9200_EmacDisableMDIO (p_mac);
if ((Id1 == (0x0013)) && ((Id2 & 0xFFF0) == 0x78E0))
return TRUE;
return FALSE;
}
/*
* Name:
* lxt972_GetLinkSpeed
* Description:
* Link parallel detection status of MAC is checked and set in the
* MAC configuration registers
* Arguments:
* p_mac - pointer to MAC
* Return value:
* TRUE - if link status set succesfully
* FALSE - if link status not set
*/
UCHAR lxt972_GetLinkSpeed (AT91PS_EMAC p_mac)
{
unsigned short stat1;
if (!at91rm9200_EmacReadPhy (p_mac, PHY_LXT971_STAT2, &stat1))
return FALSE;
if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link status up? */
return FALSE;
if (stat1 & PHY_LXT971_STAT2_100BTX) {
if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
/*set Emac for 100BaseTX and Full Duplex */
p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
} else {
/*set Emac for 100BaseTX and Half Duplex */
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
| AT91C_EMAC_SPD;
}
return TRUE;
} else {
if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
/*set MII for 10BaseT and Full Duplex */
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
| AT91C_EMAC_FD;
} else {
/*set MII for 10BaseT and Half Duplex */
p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
}
return TRUE;
}
return FALSE;
}
/*
* Name:
* lxt972_InitPhy
* Description:
* MAC starts checking its link by using parallel detection and
* Autonegotiation and the same is set in the MAC configuration registers
* Arguments:
* p_mac - pointer to struct AT91S_EMAC
* Return value:
* TRUE - if link status set succesfully
* FALSE - if link status not set
*/
UCHAR lxt972_InitPhy (AT91PS_EMAC p_mac)
{
UCHAR ret = TRUE;
at91rm9200_EmacEnableMDIO (p_mac);
if (!lxt972_GetLinkSpeed (p_mac)) {
/* Try another time */
ret = lxt972_GetLinkSpeed (p_mac);
}
/* Disable PHY Interrupts */
at91rm9200_EmacWritePhy (p_mac, PHY_LXT971_INT_ENABLE, 0);
at91rm9200_EmacDisableMDIO (p_mac);
return (ret);
}
/*
* Name:
* lxt972_AutoNegotiate
* Description:
* MAC Autonegotiates with the partner status of same is set in the
* MAC configuration registers
* Arguments:
* dev - pointer to struct net_device
* Return value:
* TRUE - if link status set successfully
* FALSE - if link status not set
*/
UCHAR lxt972_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
{
unsigned short value;
/* Set lxt972 control register */
if (!at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_CTRL, &value))
return FALSE;
/* Restart Auto_negotiation */
value |= PHY_COMMON_CTRL_RES_AUTO;
if (!at91rm9200_EmacWritePhy (p_mac, PHY_COMMON_CTRL, &value))
return FALSE;
/*check AutoNegotiate complete */
udelay (10000);
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_STAT, &value);
if (!(value & PHY_COMMON_STAT_AN_COMP))
return FALSE;
return (lxt972_GetLinkSpeed (p_mac));
}
#endif /* CONFIG_COMMANDS & CFG_CMD_NET */
#endif /* CONFIG_DRIVER_ETHER */
|
