summaryrefslogtreecommitdiff
path: root/cmd/mii.c
blob: fe8602eb7c87148d5bfeb6479c2f90d38a5f63aa (plain)
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
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2001
 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
 */

/*
 * MII Utilities
 */

#include <common.h>
#include <command.h>
#include <dm.h>
#include <miiphy.h>

typedef struct _MII_field_desc_t {
	ushort hi;
	ushort lo;
	ushort mask;
	const char *name;
} MII_field_desc_t;

static const MII_field_desc_t reg_0_desc_tbl[] = {
	{ 15, 15, 0x01, "reset"                        },
	{ 14, 14, 0x01, "loopback"                     },
	{ 13,  6, 0x81, "speed selection"              }, /* special */
	{ 12, 12, 0x01, "A/N enable"                   },
	{ 11, 11, 0x01, "power-down"                   },
	{ 10, 10, 0x01, "isolate"                      },
	{  9,  9, 0x01, "restart A/N"                  },
	{  8,  8, 0x01, "duplex"                       }, /* special */
	{  7,  7, 0x01, "collision test enable"        },
	{  5,  0, 0x3f, "(reserved)"                   }
};

static const MII_field_desc_t reg_1_desc_tbl[] = {
	{ 15, 15, 0x01, "100BASE-T4 able"              },
	{ 14, 14, 0x01, "100BASE-X  full duplex able"  },
	{ 13, 13, 0x01, "100BASE-X  half duplex able"  },
	{ 12, 12, 0x01, "10 Mbps    full duplex able"  },
	{ 11, 11, 0x01, "10 Mbps    half duplex able"  },
	{ 10, 10, 0x01, "100BASE-T2 full duplex able"  },
	{  9,  9, 0x01, "100BASE-T2 half duplex able"  },
	{  8,  8, 0x01, "extended status"              },
	{  7,  7, 0x01, "(reserved)"                   },
	{  6,  6, 0x01, "MF preamble suppression"      },
	{  5,  5, 0x01, "A/N complete"                 },
	{  4,  4, 0x01, "remote fault"                 },
	{  3,  3, 0x01, "A/N able"                     },
	{  2,  2, 0x01, "link status"                  },
	{  1,  1, 0x01, "jabber detect"                },
	{  0,  0, 0x01, "extended capabilities"        },
};

static const MII_field_desc_t reg_2_desc_tbl[] = {
	{ 15,  0, 0xffff, "OUI portion"                },
};

static const MII_field_desc_t reg_3_desc_tbl[] = {
	{ 15, 10, 0x3f, "OUI portion"                },
	{  9,  4, 0x3f, "manufacturer part number"   },
	{  3,  0, 0x0f, "manufacturer rev. number"   },
};

static const MII_field_desc_t reg_4_desc_tbl[] = {
	{ 15, 15, 0x01, "next page able"               },
	{ 14, 14, 0x01, "(reserved)"                   },
	{ 13, 13, 0x01, "remote fault"                 },
	{ 12, 12, 0x01, "(reserved)"                   },
	{ 11, 11, 0x01, "asymmetric pause"             },
	{ 10, 10, 0x01, "pause enable"                 },
	{  9,  9, 0x01, "100BASE-T4 able"              },
	{  8,  8, 0x01, "100BASE-TX full duplex able"  },
	{  7,  7, 0x01, "100BASE-TX able"              },
	{  6,  6, 0x01, "10BASE-T   full duplex able"  },
	{  5,  5, 0x01, "10BASE-T   able"              },
	{  4,  0, 0x1f, "selector"                     },
};

static const MII_field_desc_t reg_5_desc_tbl[] = {
	{ 15, 15, 0x01, "next page able"               },
	{ 14, 14, 0x01, "acknowledge"                  },
	{ 13, 13, 0x01, "remote fault"                 },
	{ 12, 12, 0x01, "(reserved)"                   },
	{ 11, 11, 0x01, "asymmetric pause able"        },
	{ 10, 10, 0x01, "pause able"                   },
	{  9,  9, 0x01, "100BASE-T4 able"              },
	{  8,  8, 0x01, "100BASE-X full duplex able"   },
	{  7,  7, 0x01, "100BASE-TX able"              },
	{  6,  6, 0x01, "10BASE-T full duplex able"    },
	{  5,  5, 0x01, "10BASE-T able"                },
	{  4,  0, 0x1f, "partner selector"             },
};

static const MII_field_desc_t reg_9_desc_tbl[] = {
	{ 15, 13, 0x07, "test mode"		       },
	{ 12, 12, 0x01, "manual master/slave enable"   },
	{ 11, 11, 0x01, "manual master/slave value"    },
	{ 10, 10, 0x01, "multi/single port"            },
	{  9,  9, 0x01, "1000BASE-T full duplex able"  },
	{  8,  8, 0x01, "1000BASE-T half duplex able"  },
	{  7,  7, 0x01, "automatic TDR on link down"   },
	{  6,  6, 0x7f, "(reserved)"                   },
};

static const MII_field_desc_t reg_10_desc_tbl[] = {
	{ 15, 15, 0x01, "master/slave config fault"    },
	{ 14, 14, 0x01, "master/slave config result"   },
	{ 13, 13, 0x01, "local receiver status OK"     },
	{ 12, 12, 0x01, "remote receiver status OK"    },
	{ 11, 11, 0x01, "1000BASE-T full duplex able"  },
	{ 10, 10, 0x01, "1000BASE-T half duplex able"  },
	{  9,  8, 0x03, "(reserved)"                   },
	{  7,  0, 0xff, "1000BASE-T idle error counter"},
};

typedef struct _MII_reg_desc_t {
	ushort regno;
	const MII_field_desc_t *pdesc;
	ushort len;
	const char *name;
} MII_reg_desc_t;

static const MII_reg_desc_t mii_reg_desc_tbl[] = {
	{ MII_BMCR,      reg_0_desc_tbl, ARRAY_SIZE(reg_0_desc_tbl),
		"PHY control register" },
	{ MII_BMSR,      reg_1_desc_tbl, ARRAY_SIZE(reg_1_desc_tbl),
		"PHY status register" },
	{ MII_PHYSID1,   reg_2_desc_tbl, ARRAY_SIZE(reg_2_desc_tbl),
		"PHY ID 1 register" },
	{ MII_PHYSID2,   reg_3_desc_tbl, ARRAY_SIZE(reg_3_desc_tbl),
		"PHY ID 2 register" },
	{ MII_ADVERTISE, reg_4_desc_tbl, ARRAY_SIZE(reg_4_desc_tbl),
		"Autonegotiation advertisement register" },
	{ MII_LPA,       reg_5_desc_tbl, ARRAY_SIZE(reg_5_desc_tbl),
		"Autonegotiation partner abilities register" },
	{ MII_CTRL1000,	 reg_9_desc_tbl, ARRAY_SIZE(reg_9_desc_tbl),
		"1000BASE-T control register" },
	{ MII_STAT1000,	 reg_10_desc_tbl, ARRAY_SIZE(reg_10_desc_tbl),
		"1000BASE-T status register" },
};

static void dump_reg(
	ushort             regval,
	const MII_reg_desc_t *prd);

static bool special_field(ushort regno, const MII_field_desc_t *pdesc,
			  ushort regval);

static void MII_dump(const ushort *regvals, uchar reglo, uchar reghi)
{
	ulong i;

	for (i = 0; i < ARRAY_SIZE(mii_reg_desc_tbl); i++) {
		const uchar reg = mii_reg_desc_tbl[i].regno;

		if (reg >= reglo && reg <= reghi)
			dump_reg(regvals[reg - reglo], &mii_reg_desc_tbl[i]);
	}
}

/* Print out field position, value, name */
static void dump_field(const MII_field_desc_t *pdesc, ushort regval)
{
	if (pdesc->hi == pdesc->lo)
		printf("%2u   ", pdesc->lo);
	else
		printf("%2u-%2u", pdesc->hi, pdesc->lo);

	printf(" = %5u	  %s", (regval >> pdesc->lo) & pdesc->mask,
	       pdesc->name);
}

static void dump_reg(
	ushort             regval,
	const MII_reg_desc_t *prd)
{
	ulong i;
	ushort mask_in_place;
	const MII_field_desc_t *pdesc;

	printf("%u.     (%04hx)                 -- %s --\n",
		prd->regno, regval, prd->name);

	for (i = 0; i < prd->len; i++) {
		pdesc = &prd->pdesc[i];

		mask_in_place = pdesc->mask << pdesc->lo;

		printf("  (%04hx:%04x) %u.",
		       mask_in_place,
		       regval & mask_in_place,
		       prd->regno);

		if (!special_field(prd->regno, pdesc, regval))
			dump_field(pdesc, regval);
		printf("\n");

	}
	printf("\n");
}

/* Special fields:
** 0.6,13
** 0.8
** 2.15-0
** 3.15-0
** 4.4-0
** 5.4-0
*/

static bool special_field(ushort regno, const MII_field_desc_t *pdesc,
			  ushort regval)
{
	const ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;

	if ((regno == MII_BMCR) && (pdesc->lo == 6)) {
		ushort speed_bits = regval & (BMCR_SPEED1000 | BMCR_SPEED100);
		printf("%2u,%2u =   b%u%u    speed selection = %s Mbps",
			6, 13,
			(regval >>  6) & 1,
			(regval >> 13) & 1,
			speed_bits == BMCR_SPEED1000 ? "1000" :
			speed_bits == BMCR_SPEED100  ? "100" :
			"10");
		return 1;
	}

	else if ((regno == MII_BMCR) && (pdesc->lo == 8)) {
		dump_field(pdesc, regval);
		printf(" = %s", ((regval >> pdesc->lo) & 1) ? "full" : "half");
		return 1;
	}

	else if ((regno == MII_ADVERTISE) && (pdesc->lo == 0)) {
		dump_field(pdesc, regval);
		printf(" = %s",
		       sel_bits == PHY_ANLPAR_PSB_802_3 ? "IEEE 802.3 CSMA/CD" :
		       sel_bits == PHY_ANLPAR_PSB_802_9 ?
		       "IEEE 802.9 ISLAN-16T" : "???");
		return 1;
	}

	else if ((regno == MII_LPA) && (pdesc->lo == 0)) {
		dump_field(pdesc, regval);
		printf(" = %s",
		       sel_bits == PHY_ANLPAR_PSB_802_3 ? "IEEE 802.3 CSMA/CD" :
		       sel_bits == PHY_ANLPAR_PSB_802_9 ?
		       "IEEE 802.9 ISLAN-16T" : "???");
		return 1;
	}

	return 0;
}

static char last_op[2];
static uint last_data;
static uint last_addr_lo;
static uint last_addr_hi;
static uint last_reg_lo;
static uint last_reg_hi;
static uint last_mask;

static void extract_range(
	char * input,
	unsigned char * plo,
	unsigned char * phi)
{
	char * end;
	*plo = simple_strtoul(input, &end, 16);
	if (*end == '-') {
		end++;
		*phi = simple_strtoul(end, NULL, 16);
	}
	else {
		*phi = *plo;
	}
}

/* ---------------------------------------------------------------- */
static int do_mii(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
	char		op[2];
	unsigned char	addrlo, addrhi, reglo, reghi;
	unsigned char	addr, reg;
	unsigned short	data, mask;
	int		rcode = 0;
	const char	*devname;

	if (argc < 2)
		return CMD_RET_USAGE;

#if defined(CONFIG_MII_INIT)
	mii_init ();
#endif

	/*
	 * We use the last specified parameters, unless new ones are
	 * entered.
	 */
	op[0] = last_op[0];
	op[1] = last_op[1];
	addrlo = last_addr_lo;
	addrhi = last_addr_hi;
	reglo  = last_reg_lo;
	reghi  = last_reg_hi;
	data   = last_data;
	mask   = last_mask;

	if ((flag & CMD_FLAG_REPEAT) == 0) {
		op[0] = argv[1][0];
		if (strlen(argv[1]) > 1)
			op[1] = argv[1][1];
		else
			op[1] = '\0';

		if (argc >= 3)
			extract_range(argv[2], &addrlo, &addrhi);
		if (argc >= 4)
			extract_range(argv[3], &reglo, &reghi);
		if (argc >= 5)
			data = simple_strtoul(argv[4], NULL, 16);
		if (argc >= 6)
			mask = simple_strtoul(argv[5], NULL, 16);
	}

	if (addrhi > 31 && strncmp(op, "de", 2)) {
		printf("Incorrect PHY address. Range should be 0-31\n");
		return CMD_RET_USAGE;
	}

	/* use current device */
	devname = miiphy_get_current_dev();

	/*
	 * check info/read/write.
	 */
	if (op[0] == 'i') {
		unsigned char j, start, end;
		unsigned int oui;
		unsigned char model;
		unsigned char rev;

		/*
		 * Look for any and all PHYs.  Valid addresses are 0..31.
		 */
		if (argc >= 3) {
			start = addrlo; end = addrhi;
		} else {
			start = 0; end = 31;
		}

		for (j = start; j <= end; j++) {
			if (miiphy_info (devname, j, &oui, &model, &rev) == 0) {
				printf("PHY 0x%02X: "
					"OUI = 0x%04X, "
					"Model = 0x%02X, "
					"Rev = 0x%02X, "
					"%3dbase%s, %s\n",
					j, oui, model, rev,
					miiphy_speed (devname, j),
					miiphy_is_1000base_x (devname, j)
						? "X" : "T",
					(miiphy_duplex (devname, j) == FULL)
						? "FDX" : "HDX");
			}
		}
	} else if (op[0] == 'r') {
		for (addr = addrlo; addr <= addrhi; addr++) {
			for (reg = reglo; reg <= reghi; reg++) {
				data = 0xffff;
				if (miiphy_read (devname, addr, reg, &data) != 0) {
					printf(
					"Error reading from the PHY addr=%02x reg=%02x\n",
						addr, reg);
					rcode = 1;
				} else {
					if ((addrlo != addrhi) || (reglo != reghi))
						printf("addr=%02x reg=%02x data=",
							(uint)addr, (uint)reg);
					printf("%04X\n", data & 0x0000FFFF);
				}
			}
			if ((addrlo != addrhi) && (reglo != reghi))
				printf("\n");
		}
	} else if (op[0] == 'w') {
		for (addr = addrlo; addr <= addrhi; addr++) {
			for (reg = reglo; reg <= reghi; reg++) {
				if (miiphy_write (devname, addr, reg, data) != 0) {
					printf("Error writing to the PHY addr=%02x reg=%02x\n",
						addr, reg);
					rcode = 1;
				}
			}
		}
	} else if (op[0] == 'm') {
		for (addr = addrlo; addr <= addrhi; addr++) {
			for (reg = reglo; reg <= reghi; reg++) {
				unsigned short val = 0;
				if (miiphy_read(devname, addr,
						reg, &val)) {
					printf("Error reading from the PHY");
					printf(" addr=%02x", addr);
					printf(" reg=%02x\n", reg);
					rcode = 1;
				} else {
					val = (val & ~mask) | (data & mask);
					if (miiphy_write(devname, addr,
							 reg, val)) {
						printf("Error writing to the PHY");
						printf(" addr=%02x", addr);
						printf(" reg=%02x\n", reg);
						rcode = 1;
					}
				}
			}
		}
	} else if (strncmp(op, "du", 2) == 0) {
		ushort regs[MII_STAT1000 + 1];  /* Last reg is 0x0a */
		int ok = 1;
		if (reglo > MII_STAT1000 || reghi > MII_STAT1000) {
			printf("The MII dump command only formats the standard MII registers, 0-5, 9-a.\n");
			return 1;
		}
		for (addr = addrlo; addr <= addrhi; addr++) {
			for (reg = reglo; reg <= reghi; reg++) {
				if (miiphy_read(devname, addr, reg,
						&regs[reg - reglo]) != 0) {
					ok = 0;
					printf(
					"Error reading from the PHY addr=%02x reg=%02x\n",
						addr, reg);
					rcode = 1;
				}
			}
			if (ok)
				MII_dump(regs, reglo, reghi);
			printf("\n");
		}
	} else if (strncmp(op, "de", 2) == 0) {
		if (argc == 2)
			miiphy_listdev ();
		else
			miiphy_set_current_dev (argv[2]);
	} else {
		return CMD_RET_USAGE;
	}

	/*
	 * Save the parameters for repeats.
	 */
	last_op[0] = op[0];
	last_op[1] = op[1];
	last_addr_lo = addrlo;
	last_addr_hi = addrhi;
	last_reg_lo  = reglo;
	last_reg_hi  = reghi;
	last_data    = data;
	last_mask    = mask;

	return rcode;
}

/***************************************************/

U_BOOT_CMD(
	mii, 6, 1, do_mii,
	"MII utility commands",
	"device                            - list available devices\n"
	"mii device <devname>                  - set current device\n"
	"mii info   <addr>                     - display MII PHY info\n"
	"mii read   <addr> <reg>               - read  MII PHY <addr> register <reg>\n"
	"mii write  <addr> <reg> <data>        - write MII PHY <addr> register <reg>\n"
	"mii modify <addr> <reg> <data> <mask> - modify MII PHY <addr> register <reg>\n"
	"                                        updating bits identified in <mask>\n"
	"mii dump   <addr> <reg>               - pretty-print <addr> <reg> (0-5 only)\n"
	"Addr and/or reg may be ranges, e.g. 2-7."
);