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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*-----------------------------------------------------------------------------+
|
| This source code has been made available to you by IBM on an AS-IS
| basis. Anyone receiving this source is licensed under IBM
| copyrights to use it in any way he or she deems fit, including
| copying it, modifying it, compiling it, and redistributing it either
| with or without modifications. No license under IBM patents or
| patent applications is to be implied by the copyright license.
|
| Any user of this software should understand that IBM cannot provide
| technical support for this software and will not be responsible for
| any consequences resulting from the use of this software.
|
| Any person who transfers this source code or any derivative work
| must include the IBM copyright notice, this paragraph, and the
| preceding two paragraphs in the transferred software.
|
| COPYRIGHT I B M CORPORATION 1995
| LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+-----------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------+
|
| File Name: miiphy.c
|
| Function: This module has utilities for accessing the MII PHY through
| the EMAC3 macro.
|
| Author: Mark Wisner
|
| Change Activity-
|
| Date Description of Change BY
| --------- --------------------- ---
| 05-May-99 Created MKW
| 01-Jul-99 Changed clock setting of sta_reg from 66Mhz to 50Mhz to
| better match OPB speed. Also modified delay times. JWB
| 29-Jul-99 Added Full duplex support MKW
| 24-Aug-99 Removed printf from dp83843_duplex() JWB
| 19-Jul-00 Ported to esd cpci405 sr
| 23-Dec-03 Ported from miiphy.c to 440GX Travis Sawyer TBS
| <travis.sawyer@sandburst.com>
|
+-----------------------------------------------------------------------------*/
#include <common.h>
#include <asm/processor.h>
#include <ppc_asm.tmpl>
#include <commproc.h>
#include <440gx_enet.h>
#include <405_mal.h>
#include <miiphy.h>
#if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
/***********************************************************/
/* Dump out to the screen PHY regs */
/***********************************************************/
void miiphy_dump (unsigned char addr)
{
unsigned long i;
unsigned short data;
for (i = 0; i < 0x1A; i++) {
if (miiphy_read (addr, i, &data)) {
printf ("read error for reg %lx\n", i);
return;
}
printf ("Phy reg %lx ==> %4x\n", i, data);
/* jump to the next set of regs */
if (i == 0x07)
i = 0x0f;
} /* end for loop */
} /* end dump */
/***********************************************************/
/* (Re)start autonegotiation */
/***********************************************************/
int phy_setup_aneg (unsigned char addr)
{
unsigned short ctl, adv;
/* Setup standard advertise */
miiphy_read (addr, PHY_ANAR, &adv);
adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 |
PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD |
PHY_ANLPAR_10);
miiphy_write (addr, PHY_ANAR, adv);
/* Start/Restart aneg */
miiphy_read (addr, PHY_BMCR, &ctl);
ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
miiphy_write (addr, PHY_BMCR, ctl);
return 0;
}
/***********************************************************/
/* read a phy reg and return the value with a rc */
/***********************************************************/
unsigned int miiphy_getemac_offset (void)
{
unsigned long zmii;
unsigned long eoffset;
/* Need to find out which mdi port we're using */
zmii = in32 (ZMII_FER);
if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0))) {
/* using port 0 */
eoffset = 0;
} else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1))) {
/* using port 1 */
eoffset = 0x100;
} else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2))) {
/* using port 2 */
eoffset = 0x400;
} else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3))) {
/* using port 3 */
eoffset = 0x600;
} else {
/* None of the mdi ports are enabled! */
/* enable port 0 */
zmii |= ZMII_FER_MDI << ZMII_FER_V (0);
out32 (ZMII_FER, zmii);
eoffset = 0;
/* need to soft reset port 0 */
zmii = in32 (EMAC_M0);
zmii |= EMAC_M0_SRST;
out32 (EMAC_M0, zmii);
}
return (eoffset);
}
int miiphy_read (unsigned char addr, unsigned char reg, unsigned short *value)
{
unsigned long sta_reg; /* STA scratch area */
unsigned long i;
unsigned long emac_reg;
emac_reg = miiphy_getemac_offset ();
/* see if it is ready for 1000 nsec */
i = 0;
/* see if it is ready for sec */
while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) {
udelay (7);
if (i > 5) {
#if 0
printf ("read err 1\n");
#endif
return -1;
}
i++;
}
sta_reg = reg; /* reg address */
/* set clock (50Mhz) and read flags */
#if defined(CONFIG_440_GX)
sta_reg |= EMAC_STACR_READ;
#else
sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ;
#endif
#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440_GX)
sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
#endif
sta_reg = sta_reg | (addr << 5); /* Phy address */
out32 (EMAC_STACR + emac_reg, sta_reg);
#if 0 /* test-only */
printf ("a2: write: EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
#endif
sta_reg = in32 (EMAC_STACR + emac_reg);
i = 0;
while ((sta_reg & EMAC_STACR_OC) == 0) {
udelay (7);
if (i > 5) {
return -1;
}
i++;
sta_reg = in32 (EMAC_STACR + emac_reg);
}
if ((sta_reg & EMAC_STACR_PHYE) != 0) {
return -1;
}
*value = *(short *) (&sta_reg);
return 0;
} /* phy_read */
/***********************************************************/
/* write a phy reg and return the value with a rc */
/***********************************************************/
int miiphy_write (unsigned char addr, unsigned char reg, unsigned short value)
{
unsigned long sta_reg; /* STA scratch area */
unsigned long i;
unsigned long emac_reg;
emac_reg = miiphy_getemac_offset ();
/* see if it is ready for 1000 nsec */
i = 0;
while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) {
if (i > 5)
return -1;
udelay (7);
i++;
}
sta_reg = 0;
sta_reg = reg; /* reg address */
/* set clock (50Mhz) and read flags */
#if defined(CONFIG_440_GX)
sta_reg |= EMAC_STACR_WRITE;
#else
sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ;
#endif
#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440_GX)
sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */
#endif
sta_reg = sta_reg | ((unsigned long) addr << 5); /* Phy address */
memcpy (&sta_reg, &value, 2); /* put in data */
out32 (EMAC_STACR + emac_reg, sta_reg);
/* wait for completion */
i = 0;
sta_reg = in32 (EMAC_STACR + emac_reg);
while ((sta_reg & EMAC_STACR_OC) == 0) {
udelay (7);
if (i > 5)
return -1;
i++;
sta_reg = in32 (EMAC_STACR + emac_reg);
}
if ((sta_reg & EMAC_STACR_PHYE) != 0)
return -1;
return 0;
} /* phy_write */
#endif /* CONFIG_405GP */
|
