cmd_mii.c 11.2 KB
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
/*
 * (C) Copyright 2001
 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * MII Utilities
 */

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

typedef struct _MII_reg_desc_t {
	ushort regno;
	char * name;
} MII_reg_desc_t;

static const MII_reg_desc_t reg_0_5_desc_tbl[] = {
	{ MII_BMCR,      "PHY control register" },
	{ MII_BMSR,      "PHY status register" },
	{ MII_PHYSID1,   "PHY ID 1 register" },
	{ MII_PHYSID2,   "PHY ID 2 register" },
	{ MII_ADVERTISE, "Autonegotiation advertisement register" },
	{ MII_LPA,       "Autonegotiation partner abilities register" },
};

typedef struct _MII_field_desc_t {
	ushort hi;
	ushort lo;
	ushort mask;
	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, "xxx to do"                    },
};

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, "xxx to do"                    },
};
typedef struct _MII_field_desc_and_len_t {
	const MII_field_desc_t *pdesc;
	ushort len;
} MII_field_desc_and_len_t;

static const MII_field_desc_and_len_t desc_and_len_tbl[] = {
	{ reg_0_desc_tbl, ARRAY_SIZE(reg_0_desc_tbl)   },
	{ reg_1_desc_tbl, ARRAY_SIZE(reg_1_desc_tbl)   },
	{ reg_2_desc_tbl, ARRAY_SIZE(reg_2_desc_tbl)   },
	{ reg_3_desc_tbl, ARRAY_SIZE(reg_3_desc_tbl)   },
	{ reg_4_desc_tbl, ARRAY_SIZE(reg_4_desc_tbl)   },
	{ reg_5_desc_tbl, ARRAY_SIZE(reg_5_desc_tbl)   },
};

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

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

static void MII_dump_0_to_5(
	ushort regvals[6],
	uchar reglo,
	uchar reghi)
{
	ulong i;

	for (i = 0; i < 6; i++) {
		if ((reglo <= i) && (i <= reghi))
			dump_reg(regvals[i], &reg_0_5_desc_tbl[i],
				&desc_and_len_tbl[i]);
	}
}

static void dump_reg(
	ushort             regval,
	const MII_reg_desc_t *prd,
	const MII_field_desc_and_len_t *pdl)
{
	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 < pdl->len; i++) {
		pdesc = &pdl->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)) {
		}
		else {
			if (pdesc->hi == pdesc->lo)
				printf("%2u   ", pdesc->lo);
			else
				printf("%2u-%2u", pdesc->hi, pdesc->lo);
			printf(" = %5u    %s",
				(regval & mask_in_place) >> pdesc->lo,
				pdesc->name);
		}
		printf("\n");

	}
	printf("\n");
}

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

static int special_field(
	ushort regno,
	const MII_field_desc_t *pdesc,
	ushort regval)
{
	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)) {
		printf("%2u    = %5u    duplex = %s",
			pdesc->lo,
			(regval >>  pdesc->lo) & 1,
			((regval >> pdesc->lo) & 1) ? "full" : "half");
		return 1;
	}

	else if ((regno == MII_ADVERTISE) && (pdesc->lo == 0)) {
		ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
		printf("%2u-%2u = %5u    selector = %s",
			pdesc->hi, pdesc->lo, sel_bits,
			sel_bits == PHY_ANLPAR_PSB_802_3 ?
				"IEEE 802.3" :
			sel_bits == PHY_ANLPAR_PSB_802_9 ?
				"IEEE 802.9 ISLAN-16T" :
			"???");
		return 1;
	}

	else if ((regno == MII_LPA) && (pdesc->lo == 0)) {
		ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
		printf("%2u-%2u =     %u    selector = %s",
			pdesc->hi, pdesc->lo, sel_bits,
			sel_bits == PHY_ANLPAR_PSB_802_3 ?
				"IEEE 802.3" :
			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 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(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char		op[2];
	unsigned char	addrlo, addrhi, reglo, reghi;
	unsigned char	addr, reg;
	unsigned short	data;
	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;

	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);
	}

	/* 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 (strncmp(op, "du", 2) == 0) {
		ushort regs[6];
		int ok = 1;
		if ((reglo > 5) || (reghi > 5)) {
			printf(
				"The MII dump command only formats the "
				"standard MII registers, 0-5.\n");
			return 1;
		}
		for (addr = addrlo; addr <= addrhi; addr++) {
			for (reg = reglo; reg < reghi + 1; reg++) {
				if (miiphy_read(devname, addr, reg, &regs[reg]) != 0) {
					ok = 0;
					printf(
					"Error reading from the PHY addr=%02x reg=%02x\n",
						addr, reg);
					rcode = 1;
				}
			}
			if (ok)
				MII_dump_0_to_5(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;

	return rcode;
}

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

U_BOOT_CMD(
	mii,	5,	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 dump   <addr> <reg>        - pretty-print <addr> <reg> (0-5 only)\n"
	"Addr and/or reg may be ranges, e.g. 2-7."
);