1 /*
2 * (C) Copyright 2001
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24 /*
25 * MII Utilities
26 */
27
28 #include <common.h>
29 #include <command.h>
30 #include <miiphy.h>
31
32 typedef struct _MII_reg_desc_t {
33 ushort regno;
34 char * name;
35 } MII_reg_desc_t;
36
37 MII_reg_desc_t reg_0_5_desc_tbl[] = {
38 { 0, "PHY control register" },
39 { 1, "PHY status register" },
40 { 2, "PHY ID 1 register" },
41 { 3, "PHY ID 2 register" },
42 { 4, "Autonegotiation advertisement register" },
43 { 5, "Autonegotiation partner abilities register" },
44 };
45
46 typedef struct _MII_field_desc_t {
47 ushort hi;
48 ushort lo;
49 ushort mask;
50 char * name;
51 } MII_field_desc_t;
52
53 MII_field_desc_t reg_0_desc_tbl[] = {
54 { 15, 15, 0x01, "reset" },
55 { 14, 14, 0x01, "loopback" },
56 { 13, 6, 0x81, "speed selection" }, /* special */
57 { 12, 12, 0x01, "A/N enable" },
58 { 11, 11, 0x01, "power-down" },
59 { 10, 10, 0x01, "isolate" },
60 { 9, 9, 0x01, "restart A/N" },
61 { 8, 8, 0x01, "duplex" }, /* special */
62 { 7, 7, 0x01, "collision test enable" },
63 { 5, 0, 0x3f, "(reserved)" }
64 };
65
66 MII_field_desc_t reg_1_desc_tbl[] = {
67 { 15, 15, 0x01, "100BASE-T4 able" },
68 { 14, 14, 0x01, "100BASE-X full duplex able" },
69 { 13, 13, 0x01, "100BASE-X half duplex able" },
70 { 12, 12, 0x01, "10 Mbps full duplex able" },
71 { 11, 11, 0x01, "10 Mbps half duplex able" },
72 { 10, 10, 0x01, "100BASE-T2 full duplex able" },
73 { 9, 9, 0x01, "100BASE-T2 half duplex able" },
74 { 8, 8, 0x01, "extended status" },
75 { 7, 7, 0x01, "(reserved)" },
76 { 6, 6, 0x01, "MF preamble suppression" },
77 { 5, 5, 0x01, "A/N complete" },
78 { 4, 4, 0x01, "remote fault" },
79 { 3, 3, 0x01, "A/N able" },
80 { 2, 2, 0x01, "link status" },
81 { 1, 1, 0x01, "jabber detect" },
82 { 0, 0, 0x01, "extended capabilities" },
83 };
84
85 MII_field_desc_t reg_2_desc_tbl[] = {
86 { 15, 0, 0xffff, "OUI portion" },
87 };
88
89 MII_field_desc_t reg_3_desc_tbl[] = {
90 { 15, 10, 0x3f, "OUI portion" },
91 { 9, 4, 0x3f, "manufacturer part number" },
92 { 3, 0, 0x0f, "manufacturer rev. number" },
93 };
94
95 MII_field_desc_t reg_4_desc_tbl[] = {
96 { 15, 15, 0x01, "next page able" },
97 { 14, 14, 0x01, "reserved" },
98 { 13, 13, 0x01, "remote fault" },
99 { 12, 12, 0x01, "reserved" },
100 { 11, 11, 0x01, "asymmetric pause" },
101 { 10, 10, 0x01, "pause enable" },
102 { 9, 9, 0x01, "100BASE-T4 able" },
103 { 8, 8, 0x01, "100BASE-TX full duplex able" },
104 { 7, 7, 0x01, "100BASE-TX able" },
105 { 6, 6, 0x01, "10BASE-T full duplex able" },
106 { 5, 5, 0x01, "10BASE-T able" },
107 { 4, 0, 0x1f, "xxx to do" },
108 };
109
110 MII_field_desc_t reg_5_desc_tbl[] = {
111 { 15, 15, 0x01, "next page able" },
112 { 14, 14, 0x01, "acknowledge" },
113 { 13, 13, 0x01, "remote fault" },
114 { 12, 12, 0x01, "(reserved)" },
115 { 11, 11, 0x01, "asymmetric pause able" },
116 { 10, 10, 0x01, "pause able" },
117 { 9, 9, 0x01, "100BASE-T4 able" },
118 { 8, 8, 0x01, "100BASE-X full duplex able" },
119 { 7, 7, 0x01, "100BASE-TX able" },
120 { 6, 6, 0x01, "10BASE-T full duplex able" },
121 { 5, 5, 0x01, "10BASE-T able" },
122 { 4, 0, 0x1f, "xxx to do" },
123 };
124
125 #define DESC0LEN (sizeof(reg_0_desc_tbl)/sizeof(reg_0_desc_tbl[0]))
126 #define DESC1LEN (sizeof(reg_1_desc_tbl)/sizeof(reg_1_desc_tbl[0]))
127 #define DESC2LEN (sizeof(reg_2_desc_tbl)/sizeof(reg_2_desc_tbl[0]))
128 #define DESC3LEN (sizeof(reg_3_desc_tbl)/sizeof(reg_3_desc_tbl[0]))
129 #define DESC4LEN (sizeof(reg_4_desc_tbl)/sizeof(reg_4_desc_tbl[0]))
130 #define DESC5LEN (sizeof(reg_5_desc_tbl)/sizeof(reg_5_desc_tbl[0]))
131
132 typedef struct _MII_field_desc_and_len_t {
133 MII_field_desc_t * pdesc;
134 ushort len;
135 } MII_field_desc_and_len_t;
136
137 MII_field_desc_and_len_t desc_and_len_tbl[] = {
138 { reg_0_desc_tbl, DESC0LEN },
139 { reg_1_desc_tbl, DESC1LEN },
140 { reg_2_desc_tbl, DESC2LEN },
141 { reg_3_desc_tbl, DESC3LEN },
142 { reg_4_desc_tbl, DESC4LEN },
143 { reg_5_desc_tbl, DESC5LEN },
144 };
145
146 static void dump_reg(
147 ushort regval,
148 MII_reg_desc_t * prd,
149 MII_field_desc_and_len_t * pdl);
150
151 static int special_field(
152 ushort regno,
153 MII_field_desc_t * pdesc,
154 ushort regval);
155
MII_dump_0_to_5(ushort regvals[6],uchar reglo,uchar reghi)156 void MII_dump_0_to_5(
157 ushort regvals[6],
158 uchar reglo,
159 uchar reghi)
160 {
161 ulong i;
162
163 for (i = 0; i < 6; i++) {
164 if ((reglo <= i) && (i <= reghi))
165 dump_reg(regvals[i], ®_0_5_desc_tbl[i],
166 &desc_and_len_tbl[i]);
167 }
168 }
169
dump_reg(ushort regval,MII_reg_desc_t * prd,MII_field_desc_and_len_t * pdl)170 static void dump_reg(
171 ushort regval,
172 MII_reg_desc_t * prd,
173 MII_field_desc_and_len_t * pdl)
174 {
175 ulong i;
176 ushort mask_in_place;
177 MII_field_desc_t * pdesc;
178
179 printf("%u. (%04hx) -- %s --\n",
180 prd->regno, regval, prd->name);
181
182 for (i = 0; i < pdl->len; i++) {
183 pdesc = &pdl->pdesc[i];
184
185 mask_in_place = pdesc->mask << pdesc->lo;
186
187 printf(" (%04hx:%04hx) %u.",
188 mask_in_place,
189 regval & mask_in_place,
190 prd->regno);
191
192 if (special_field(prd->regno, pdesc, regval)) {
193 }
194 else {
195 if (pdesc->hi == pdesc->lo)
196 printf("%2u ", pdesc->lo);
197 else
198 printf("%2u-%2u", pdesc->hi, pdesc->lo);
199 printf(" = %5u %s",
200 (regval & mask_in_place) >> pdesc->lo,
201 pdesc->name);
202 }
203 printf("\n");
204
205 }
206 printf("\n");
207 }
208
209 /* Special fields:
210 ** 0.6,13
211 ** 0.8
212 ** 2.15-0
213 ** 3.15-0
214 ** 4.4-0
215 ** 5.4-0
216 */
217
special_field(ushort regno,MII_field_desc_t * pdesc,ushort regval)218 static int special_field(
219 ushort regno,
220 MII_field_desc_t * pdesc,
221 ushort regval)
222 {
223 if ((regno == 0) && (pdesc->lo == 6)) {
224 ushort speed_bits = regval & PHY_BMCR_SPEED_MASK;
225 printf("%2u,%2u = b%u%u speed selection = %s Mbps",
226 6, 13,
227 (regval >> 6) & 1,
228 (regval >> 13) & 1,
229 speed_bits == PHY_BMCR_1000_MBPS ? "1000" :
230 speed_bits == PHY_BMCR_100_MBPS ? "100" :
231 speed_bits == PHY_BMCR_10_MBPS ? "10" :
232 "???");
233 return 1;
234 }
235
236 else if ((regno == 0) && (pdesc->lo == 8)) {
237 printf("%2u = %5u duplex = %s",
238 pdesc->lo,
239 (regval >> pdesc->lo) & 1,
240 ((regval >> pdesc->lo) & 1) ? "full" : "half");
241 return 1;
242 }
243
244 else if ((regno == 4) && (pdesc->lo == 0)) {
245 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
246 printf("%2u-%2u = %5u selector = %s",
247 pdesc->hi, pdesc->lo, sel_bits,
248 sel_bits == PHY_ANLPAR_PSB_802_3 ?
249 "IEEE 802.3" :
250 sel_bits == PHY_ANLPAR_PSB_802_9 ?
251 "IEEE 802.9 ISLAN-16T" :
252 "???");
253 return 1;
254 }
255
256 else if ((regno == 5) && (pdesc->lo == 0)) {
257 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
258 printf("%2u-%2u = %u selector = %s",
259 pdesc->hi, pdesc->lo, sel_bits,
260 sel_bits == PHY_ANLPAR_PSB_802_3 ?
261 "IEEE 802.3" :
262 sel_bits == PHY_ANLPAR_PSB_802_9 ?
263 "IEEE 802.9 ISLAN-16T" :
264 "???");
265 return 1;
266 }
267
268 return 0;
269 }
270
271 char last_op[2];
272 uint last_data;
273 uint last_addr_lo;
274 uint last_addr_hi;
275 uint last_reg_lo;
276 uint last_reg_hi;
277
extract_range(char * input,unsigned char * plo,unsigned char * phi)278 static void extract_range(
279 char * input,
280 unsigned char * plo,
281 unsigned char * phi)
282 {
283 char * end;
284 *plo = simple_strtoul(input, &end, 16);
285 if (*end == '-') {
286 end++;
287 *phi = simple_strtoul(end, NULL, 16);
288 }
289 else {
290 *phi = *plo;
291 }
292 }
293
294 /* ---------------------------------------------------------------- */
do_mii(cmd_tbl_t * cmdtp,int flag,int argc,char * argv[])295 int do_mii (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
296 {
297 char op[2];
298 unsigned char addrlo, addrhi, reglo, reghi;
299 unsigned char addr, reg;
300 unsigned short data;
301 int rcode = 0;
302 char *devname;
303
304 if (argc < 2) {
305 cmd_usage(cmdtp);
306 return 1;
307 }
308
309 #if defined(CONFIG_MII_INIT)
310 mii_init ();
311 #endif
312
313 /*
314 * We use the last specified parameters, unless new ones are
315 * entered.
316 */
317 op[0] = last_op[0];
318 op[1] = last_op[1];
319 addrlo = last_addr_lo;
320 addrhi = last_addr_hi;
321 reglo = last_reg_lo;
322 reghi = last_reg_hi;
323 data = last_data;
324
325 if ((flag & CMD_FLAG_REPEAT) == 0) {
326 op[0] = argv[1][0];
327 if (strlen(argv[1]) > 1)
328 op[1] = argv[1][1];
329 else
330 op[1] = '\0';
331
332 if (argc >= 3)
333 extract_range(argv[2], &addrlo, &addrhi);
334 if (argc >= 4)
335 extract_range(argv[3], ®lo, ®hi);
336 if (argc >= 5)
337 data = simple_strtoul (argv[4], NULL, 16);
338 }
339
340 /* use current device */
341 devname = miiphy_get_current_dev();
342
343 /*
344 * check info/read/write.
345 */
346 if (op[0] == 'i') {
347 unsigned char j, start, end;
348 unsigned int oui;
349 unsigned char model;
350 unsigned char rev;
351
352 /*
353 * Look for any and all PHYs. Valid addresses are 0..31.
354 */
355 if (argc >= 3) {
356 start = addrlo; end = addrhi;
357 } else {
358 start = 0; end = 31;
359 }
360
361 for (j = start; j <= end; j++) {
362 if (miiphy_info (devname, j, &oui, &model, &rev) == 0) {
363 printf("PHY 0x%02X: "
364 "OUI = 0x%04X, "
365 "Model = 0x%02X, "
366 "Rev = 0x%02X, "
367 "%3dbase%s, %s\n",
368 j, oui, model, rev,
369 miiphy_speed (devname, j),
370 miiphy_is_1000base_x (devname, j)
371 ? "X" : "T",
372 (miiphy_duplex (devname, j) == FULL)
373 ? "FDX" : "HDX");
374 }
375 }
376 } else if (op[0] == 'r') {
377 for (addr = addrlo; addr <= addrhi; addr++) {
378 for (reg = reglo; reg <= reghi; reg++) {
379 data = 0xffff;
380 if (miiphy_read (devname, addr, reg, &data) != 0) {
381 printf(
382 "Error reading from the PHY addr=%02x reg=%02x\n",
383 addr, reg);
384 rcode = 1;
385 } else {
386 if ((addrlo != addrhi) || (reglo != reghi))
387 printf("addr=%02x reg=%02x data=",
388 (uint)addr, (uint)reg);
389 printf("%04X\n", data & 0x0000FFFF);
390 }
391 }
392 if ((addrlo != addrhi) && (reglo != reghi))
393 printf("\n");
394 }
395 } else if (op[0] == 'w') {
396 for (addr = addrlo; addr <= addrhi; addr++) {
397 for (reg = reglo; reg <= reghi; reg++) {
398 if (miiphy_write (devname, addr, reg, data) != 0) {
399 printf("Error writing to the PHY addr=%02x reg=%02x\n",
400 addr, reg);
401 rcode = 1;
402 }
403 }
404 }
405 } else if (strncmp(op, "du", 2) == 0) {
406 ushort regs[6];
407 int ok = 1;
408 if ((reglo > 5) || (reghi > 5)) {
409 printf(
410 "The MII dump command only formats the "
411 "standard MII registers, 0-5.\n");
412 return 1;
413 }
414 for (addr = addrlo; addr <= addrhi; addr++) {
415 for (reg = reglo; reg < reghi + 1; reg++) {
416 if (miiphy_read(devname, addr, reg, ®s[reg]) != 0) {
417 ok = 0;
418 printf(
419 "Error reading from the PHY addr=%02x reg=%02x\n",
420 addr, reg);
421 rcode = 1;
422 }
423 }
424 if (ok)
425 MII_dump_0_to_5(regs, reglo, reghi);
426 printf("\n");
427 }
428 } else if (strncmp(op, "de", 2) == 0) {
429 if (argc == 2)
430 miiphy_listdev ();
431 else
432 miiphy_set_current_dev (argv[2]);
433 } else {
434 cmd_usage(cmdtp);
435 return 1;
436 }
437
438 /*
439 * Save the parameters for repeats.
440 */
441 last_op[0] = op[0];
442 last_op[1] = op[1];
443 last_addr_lo = addrlo;
444 last_addr_hi = addrhi;
445 last_reg_lo = reglo;
446 last_reg_hi = reghi;
447 last_data = data;
448
449 return rcode;
450 }
451
452 /***************************************************/
453
454 U_BOOT_CMD(
455 mii, 5, 1, do_mii,
456 "MII utility commands",
457 "device - list available devices\n"
458 "mii device <devname> - set current device\n"
459 "mii info <addr> - display MII PHY info\n"
460 "mii read <addr> <reg> - read MII PHY <addr> register <reg>\n"
461 "mii write <addr> <reg> <data> - write MII PHY <addr> register <reg>\n"
462 "mii dump <addr> <reg> - pretty-print <addr> <reg> (0-5 only)\n"
463 "Addr and/or reg may be ranges, e.g. 2-7."
464 );
465