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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
|
/*-----------------------------------------------------------------------------+
| This source code is dual-licensed. You may use it under the terms of the
| GNU General Public License version 2, or under the license below.
|
| 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
|
+-----------------------------------------------------------------------------*/
/* define DEBUG for debugging output (obviously ;-)) */
#if 0
#define DEBUG
#endif
#include <common.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <ppc_asm.tmpl>
#include <commproc.h>
#include <ppc4xx_enet.h>
#include <405_mal.h>
#include <miiphy.h>
#if !defined(CONFIG_PHY_CLK_FREQ)
#define CONFIG_PHY_CLK_FREQ 0
#endif
/***********************************************************/
/* Dump out to the screen PHY regs */
/***********************************************************/
void miiphy_dump (char *devname, unsigned char addr)
{
unsigned long i;
unsigned short data;
for (i = 0; i < 0x1A; i++) {
if (miiphy_read (devname, 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 (char *devname, unsigned char addr)
{
u16 bmcr;
#if defined(CONFIG_PHY_DYNAMIC_ANEG)
/*
* Set up advertisement based on capablilities reported by the PHY.
* This should work for both copper and fiber.
*/
u16 bmsr;
#if defined(CONFIG_PHY_GIGE)
u16 exsr = 0x0000;
#endif
miiphy_read (devname, addr, PHY_BMSR, &bmsr);
#if defined(CONFIG_PHY_GIGE)
if (bmsr & PHY_BMSR_EXT_STAT)
miiphy_read (devname, addr, PHY_EXSR, &exsr);
if (exsr & (PHY_EXSR_1000XF | PHY_EXSR_1000XH)) {
/* 1000BASE-X */
u16 anar = 0x0000;
if (exsr & PHY_EXSR_1000XF)
anar |= PHY_X_ANLPAR_FD;
if (exsr & PHY_EXSR_1000XH)
anar |= PHY_X_ANLPAR_HD;
miiphy_write (devname, addr, PHY_ANAR, anar);
} else
#endif
{
u16 anar, btcr;
miiphy_read (devname, addr, PHY_ANAR, &anar);
anar &= ~(0x5000 | PHY_ANLPAR_T4 | PHY_ANLPAR_TXFD |
PHY_ANLPAR_TX | PHY_ANLPAR_10FD | PHY_ANLPAR_10);
miiphy_read (devname, addr, PHY_1000BTCR, &btcr);
btcr &= ~(0x00FF | PHY_1000BTCR_1000FD | PHY_1000BTCR_1000HD);
if (bmsr & PHY_BMSR_100T4)
anar |= PHY_ANLPAR_T4;
if (bmsr & PHY_BMSR_100TXF)
anar |= PHY_ANLPAR_TXFD;
if (bmsr & PHY_BMSR_100TXH)
anar |= PHY_ANLPAR_TX;
if (bmsr & PHY_BMSR_10TF)
anar |= PHY_ANLPAR_10FD;
if (bmsr & PHY_BMSR_10TH)
anar |= PHY_ANLPAR_10;
miiphy_write (devname, addr, PHY_ANAR, anar);
#if defined(CONFIG_PHY_GIGE)
if (exsr & PHY_EXSR_1000TF)
btcr |= PHY_1000BTCR_1000FD;
if (exsr & PHY_EXSR_1000TH)
btcr |= PHY_1000BTCR_1000HD;
miiphy_write (devname, addr, PHY_1000BTCR, btcr);
#endif
}
#else /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
/*
* Set up standard advertisement
*/
u16 adv;
miiphy_read (devname, addr, PHY_ANAR, &adv);
adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_TXFD | PHY_ANLPAR_TX |
PHY_ANLPAR_10FD | PHY_ANLPAR_10);
miiphy_write (devname, addr, PHY_ANAR, adv);
miiphy_read (devname, addr, PHY_1000BTCR, &adv);
adv |= (0x0300);
miiphy_write (devname, addr, PHY_1000BTCR, adv);
#endif /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
/* Start/Restart aneg */
miiphy_read (devname, addr, PHY_BMCR, &bmcr);
bmcr |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
miiphy_write (devname, addr, PHY_BMCR, bmcr);
return 0;
}
/***********************************************************/
/* read a phy reg and return the value with a rc */
/***********************************************************/
/* AMCC_TODO:
* Find out of the choice for the emac for MDIO is from the bridges,
* i.e. ZMII or RGMII as approporiate. If the bridges are not used
* to determine the emac for MDIO, then is the SDR0_ETH_CFG[MDIO_SEL]
* used? If so, then this routine below does not apply to the 460EX/GT.
*
* sr: Currently on 460EX only EMAC0 works with MDIO, so we always
* return EMAC0 offset here
* vg: For 460EX/460GT if internal GPCS PHY address is specified
* return appropriate EMAC offset
*/
unsigned int miiphy_getemac_offset(u8 addr)
{
#if (defined(CONFIG_440) && \
!defined(CONFIG_440SP) && !defined(CONFIG_440SPE) && \
!defined(CONFIG_460EX) && !defined(CONFIG_460GT)) && \
defined(CONFIG_NET_MULTI)
unsigned long zmii;
unsigned long eoffset;
/* Need to find out which mdi port we're using */
zmii = in_be32((void *)ZMII0_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);
out_be32((void *)ZMII0_FER, zmii);
eoffset = 0;
/* need to soft reset port 0 */
zmii = in_be32((void *)EMAC0_MR0);
zmii |= EMAC_MR0_SRST;
out_be32((void *)EMAC0_MR0, zmii);
}
return (eoffset);
#else
#if defined(CONFIG_NET_MULTI) && defined(CONFIG_405EX)
unsigned long rgmii;
int devnum = 1;
rgmii = in_be32((void *)RGMII_FER);
if (rgmii & (1 << (19 - devnum)))
return 0x100;
#endif
#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
u32 eoffset = 0;
switch (addr) {
#if defined(CONFIG_HAS_ETH1) && defined(CONFIG_GPCS_PHY1_ADDR)
case CONFIG_GPCS_PHY1_ADDR:
if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x100)))
eoffset = 0x100;
break;
#endif
#if defined(CONFIG_HAS_ETH2) && defined(CONFIG_GPCS_PHY2_ADDR)
case CONFIG_GPCS_PHY2_ADDR:
if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x300)))
eoffset = 0x300;
break;
#endif
#if defined(CONFIG_HAS_ETH3) && defined(CONFIG_GPCS_PHY3_ADDR)
case CONFIG_GPCS_PHY3_ADDR:
if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x400)))
eoffset = 0x400;
break;
#endif
default:
eoffset = 0;
break;
}
return eoffset;
#endif
return 0;
#endif
}
static int emac_miiphy_wait(u32 emac_reg)
{
u32 sta_reg;
int i;
/* wait for completion */
i = 0;
do {
sta_reg = in_be32((void *)EMAC0_STACR + emac_reg);
if (i++ > 5) {
debug("%s [%d]: Timeout! EMAC0_STACR=0x%0x\n", __func__,
__LINE__, sta_reg);
return -1;
}
udelay(10);
} while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK);
return 0;
}
static int emac_miiphy_command(u8 addr, u8 reg, int cmd, u16 value)
{
u32 emac_reg;
u32 sta_reg;
emac_reg = miiphy_getemac_offset(addr);
/* wait for completion */
if (emac_miiphy_wait(emac_reg) != 0)
return -1;
sta_reg = reg; /* reg address */
/* set clock (50MHz) and read flags */
#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
defined(CONFIG_405EX)
#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | cmd;
#else
sta_reg |= cmd;
#endif
#else
sta_reg = (sta_reg | cmd) & ~EMAC_STACR_CLK_100MHZ;
#endif
/* Some boards (mainly 405EP based) define the PHY clock freqency fixed */
sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
sta_reg = sta_reg | ((u32)addr << 5); /* Phy address */
sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
if (cmd == EMAC_STACR_WRITE)
memcpy(&sta_reg, &value, 2); /* put in data */
out_be32((void *)EMAC0_STACR + emac_reg, sta_reg);
debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
/* wait for completion */
if (emac_miiphy_wait(emac_reg) != 0)
return -1;
debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
if ((sta_reg & EMAC_STACR_PHYE) != 0)
return -1;
return 0;
}
int emac4xx_miiphy_read (const char *devname, unsigned char addr, unsigned char reg,
unsigned short *value)
{
unsigned long sta_reg;
unsigned long emac_reg;
emac_reg = miiphy_getemac_offset(addr);
if (emac_miiphy_command(addr, reg, EMAC_STACR_READ, 0) != 0)
return -1;
sta_reg = in_be32((void *)EMAC0_STACR + emac_reg);
*value = sta_reg >> 16;
return 0;
}
/***********************************************************/
/* write a phy reg and return the value with a rc */
/***********************************************************/
int emac4xx_miiphy_write (const char *devname, unsigned char addr, unsigned char reg,
unsigned short value)
{
return emac_miiphy_command(addr, reg, EMAC_STACR_WRITE, value);
}
|
