cmd/mii.c

   1 /*
   2  * (C) Copyright 2001
   3  * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * MII Utilities
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14 #include <miiphy.h>
  15
  16 typedef struct _MII_reg_desc_t {
  17         ushort regno;
  18         char * name;
  19 } MII_reg_desc_t;
  20
  21 static const MII_reg_desc_t reg_0_5_desc_tbl[] = {
  22         { MII_BMCR,      "PHY control register" },
  23         { MII_BMSR,      "PHY status register" },
  24         { MII_PHYSID1,   "PHY ID 1 register" },
  25         { MII_PHYSID2,   "PHY ID 2 register" },
  26         { MII_ADVERTISE, "Autonegotiation advertisement register" },
  27         { MII_LPA,       "Autonegotiation partner abilities register" },
  28 };
  29
  30 typedef struct _MII_field_desc_t {
  31         ushort hi;
  32         ushort lo;
  33         ushort mask;
  34         char * name;
  35 } MII_field_desc_t;
  36
  37 static const MII_field_desc_t reg_0_desc_tbl[] = {
  38         { 15, 15, 0x01, "reset"                        },
  39         { 14, 14, 0x01, "loopback"                     },
  40         { 13,  6, 0x81, "speed selection"              }, /* special */
  41         { 12, 12, 0x01, "A/N enable"                   },
  42         { 11, 11, 0x01, "power-down"                   },
  43         { 10, 10, 0x01, "isolate"                      },
  44         {  9,  9, 0x01, "restart A/N"                  },
  45         {  8,  8, 0x01, "duplex"                       }, /* special */
  46         {  7,  7, 0x01, "collision test enable"        },
  47         {  5,  0, 0x3f, "(reserved)"                   }
  48 };
  49
  50 static const MII_field_desc_t reg_1_desc_tbl[] = {
  51         { 15, 15, 0x01, "100BASE-T4 able"              },
  52         { 14, 14, 0x01, "100BASE-X  full duplex able"  },
  53         { 13, 13, 0x01, "100BASE-X  half duplex able"  },
  54         { 12, 12, 0x01, "10 Mbps    full duplex able"  },
  55         { 11, 11, 0x01, "10 Mbps    half duplex able"  },
  56         { 10, 10, 0x01, "100BASE-T2 full duplex able"  },
  57         {  9,  9, 0x01, "100BASE-T2 half duplex able"  },
  58         {  8,  8, 0x01, "extended status"              },
  59         {  7,  7, 0x01, "(reserved)"                   },
  60         {  6,  6, 0x01, "MF preamble suppression"      },
  61         {  5,  5, 0x01, "A/N complete"                 },
  62         {  4,  4, 0x01, "remote fault"                 },
  63         {  3,  3, 0x01, "A/N able"                     },
  64         {  2,  2, 0x01, "link status"                  },
  65         {  1,  1, 0x01, "jabber detect"                },
  66         {  0,  0, 0x01, "extended capabilities"        },
  67 };
  68
  69 static const MII_field_desc_t reg_2_desc_tbl[] = {
  70         { 15,  0, 0xffff, "OUI portion"                },
  71 };
  72
  73 static const MII_field_desc_t reg_3_desc_tbl[] = {
  74         { 15, 10, 0x3f, "OUI portion"                },
  75         {  9,  4, 0x3f, "manufacturer part number"   },
  76         {  3,  0, 0x0f, "manufacturer rev. number"   },
  77 };
  78
  79 static const MII_field_desc_t reg_4_desc_tbl[] = {
  80         { 15, 15, 0x01, "next page able"               },
  81         { 14, 14, 0x01, "(reserved)"                   },
  82         { 13, 13, 0x01, "remote fault"                 },
  83         { 12, 12, 0x01, "(reserved)"                   },
  84         { 11, 11, 0x01, "asymmetric pause"             },
  85         { 10, 10, 0x01, "pause enable"                 },
  86         {  9,  9, 0x01, "100BASE-T4 able"              },
  87         {  8,  8, 0x01, "100BASE-TX full duplex able"  },
  88         {  7,  7, 0x01, "100BASE-TX able"              },
  89         {  6,  6, 0x01, "10BASE-T   full duplex able"  },
  90         {  5,  5, 0x01, "10BASE-T   able"              },
  91         {  4,  0, 0x1f, "xxx to do"                    },
  92 };
  93
  94 static const MII_field_desc_t reg_5_desc_tbl[] = {
  95         { 15, 15, 0x01, "next page able"               },
  96         { 14, 14, 0x01, "acknowledge"                  },
  97         { 13, 13, 0x01, "remote fault"                 },
  98         { 12, 12, 0x01, "(reserved)"                   },
  99         { 11, 11, 0x01, "asymmetric pause able"        },
 100         { 10, 10, 0x01, "pause able"                   },
 101         {  9,  9, 0x01, "100BASE-T4 able"              },
 102         {  8,  8, 0x01, "100BASE-X full duplex able"   },
 103         {  7,  7, 0x01, "100BASE-TX able"              },
 104         {  6,  6, 0x01, "10BASE-T full duplex able"    },
 105         {  5,  5, 0x01, "10BASE-T able"                },
 106         {  4,  0, 0x1f, "xxx to do"                    },
 107 };
 108 typedef struct _MII_field_desc_and_len_t {
 109         const MII_field_desc_t *pdesc;
 110         ushort len;
 111 } MII_field_desc_and_len_t;
 112
 113 static const MII_field_desc_and_len_t desc_and_len_tbl[] = {
 114         { reg_0_desc_tbl, ARRAY_SIZE(reg_0_desc_tbl)   },
 115         { reg_1_desc_tbl, ARRAY_SIZE(reg_1_desc_tbl)   },
 116         { reg_2_desc_tbl, ARRAY_SIZE(reg_2_desc_tbl)   },
 117         { reg_3_desc_tbl, ARRAY_SIZE(reg_3_desc_tbl)   },
 118         { reg_4_desc_tbl, ARRAY_SIZE(reg_4_desc_tbl)   },
 119         { reg_5_desc_tbl, ARRAY_SIZE(reg_5_desc_tbl)   },
 120 };
 121
 122 static void dump_reg(
 123         ushort             regval,
 124         const MII_reg_desc_t *prd,
 125         const MII_field_desc_and_len_t *pdl);
 126
 127 static int special_field(
 128         ushort regno,
 129         const MII_field_desc_t *pdesc,
 130         ushort regval);
 131
 132 static void MII_dump_0_to_5(
 133         ushort regvals[6],
 134         uchar reglo,
 135         uchar reghi)
 136 {
 137         ulong i;
 138
 139         for (i = 0; i < 6; i++) {
 140                 if ((reglo <= i) && (i <= reghi))
 141                         dump_reg(regvals[i], &reg_0_5_desc_tbl[i],
 142                                 &desc_and_len_tbl[i]);
 143         }
 144 }
 145
 146 static void dump_reg(
 147         ushort             regval,
 148         const MII_reg_desc_t *prd,
 149         const MII_field_desc_and_len_t *pdl)
 150 {
 151         ulong i;
 152         ushort mask_in_place;
 153         const MII_field_desc_t *pdesc;
 154
 155         printf("%u.     (%04hx)                 -- %s --\n",
 156                 prd->regno, regval, prd->name);
 157
 158         for (i = 0; i < pdl->len; i++) {
 159                 pdesc = &pdl->pdesc[i];
 160
 161                 mask_in_place = pdesc->mask << pdesc->lo;
 162
 163                 printf("  (%04hx:%04x) %u.",
 164                        mask_in_place,
 165                        regval & mask_in_place,
 166                        prd->regno);
 167
 168                 if (special_field(prd->regno, pdesc, regval)) {
 169                 }
 170                 else {
 171                         if (pdesc->hi == pdesc->lo)
 172                                 printf("%2u   ", pdesc->lo);
 173                         else
 174                                 printf("%2u-%2u", pdesc->hi, pdesc->lo);
 175                         printf(" = %5u    %s",
 176                                 (regval & mask_in_place) >> pdesc->lo,
 177                                 pdesc->name);
 178                 }
 179                 printf("\n");
 180
 181         }
 182         printf("\n");
 183 }
 184
 185 /* Special fields:
 186 ** 0.6,13
 187 ** 0.8
 188 ** 2.15-0
 189 ** 3.15-0
 190 ** 4.4-0
 191 ** 5.4-0
 192 */
 193
 194 static int special_field(
 195         ushort regno,
 196         const MII_field_desc_t *pdesc,
 197         ushort regval)
 198 {
 199         if ((regno == MII_BMCR) && (pdesc->lo == 6)) {
 200                 ushort speed_bits = regval & (BMCR_SPEED1000 | BMCR_SPEED100);
 201                 printf("%2u,%2u =   b%u%u    speed selection = %s Mbps",
 202                         6, 13,
 203                         (regval >>  6) & 1,
 204                         (regval >> 13) & 1,
 205                         speed_bits == BMCR_SPEED1000 ? "1000" :
 206                         speed_bits == BMCR_SPEED100  ? "100" :
 207                         "10");
 208                 return 1;
 209         }
 210
 211         else if ((regno == MII_BMCR) && (pdesc->lo == 8)) {
 212                 printf("%2u    = %5u    duplex = %s",
 213                         pdesc->lo,
 214                         (regval >>  pdesc->lo) & 1,
 215                         ((regval >> pdesc->lo) & 1) ? "full" : "half");
 216                 return 1;
 217         }
 218
 219         else if ((regno == MII_ADVERTISE) && (pdesc->lo == 0)) {
 220                 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
 221                 printf("%2u-%2u = %5u    selector = %s",
 222                         pdesc->hi, pdesc->lo, sel_bits,
 223                         sel_bits == PHY_ANLPAR_PSB_802_3 ?
 224                                 "IEEE 802.3" :
 225                         sel_bits == PHY_ANLPAR_PSB_802_9 ?
 226                                 "IEEE 802.9 ISLAN-16T" :
 227                         "???");
 228                 return 1;
 229         }
 230
 231         else if ((regno == MII_LPA) && (pdesc->lo == 0)) {
 232                 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
 233                 printf("%2u-%2u =     %u    selector = %s",
 234                         pdesc->hi, pdesc->lo, sel_bits,
 235                         sel_bits == PHY_ANLPAR_PSB_802_3 ?
 236                                 "IEEE 802.3" :
 237                         sel_bits == PHY_ANLPAR_PSB_802_9 ?
 238                                 "IEEE 802.9 ISLAN-16T" :
 239                         "???");
 240                 return 1;
 241         }
 242
 243         return 0;
 244 }
 245
 246 static char last_op[2];
 247 static uint last_data;
 248 static uint last_addr_lo;
 249 static uint last_addr_hi;
 250 static uint last_reg_lo;
 251 static uint last_reg_hi;
 252 static uint last_mask;
 253
 254 static void extract_range(
 255         char * input,
 256         unsigned char * plo,
 257         unsigned char * phi)
 258 {
 259         char * end;
 260         *plo = simple_strtoul(input, &end, 16);
 261         if (*end == '-') {
 262                 end++;
 263                 *phi = simple_strtoul(end, NULL, 16);
 264         }
 265         else {
 266                 *phi = *plo;
 267         }
 268 }
 269
 270 /* ---------------------------------------------------------------- */
 271 static int do_mii(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 272 {
 273         char            op[2];
 274         unsigned char   addrlo, addrhi, reglo, reghi;
 275         unsigned char   addr, reg;
 276         unsigned short  data, mask;
 277         int             rcode = 0;
 278         const char      *devname;
 279
 280         if (argc < 2)
 281                 return CMD_RET_USAGE;
 282
 283 #if defined(CONFIG_MII_INIT)
 284         mii_init ();
 285 #endif
 286
 287         /*
 288          * We use the last specified parameters, unless new ones are
 289          * entered.
 290          */
 291         op[0] = last_op[0];
 292         op[1] = last_op[1];
 293         addrlo = last_addr_lo;
 294         addrhi = last_addr_hi;
 295         reglo  = last_reg_lo;
 296         reghi  = last_reg_hi;
 297         data   = last_data;
 298         mask   = last_mask;
 299
 300         if ((flag & CMD_FLAG_REPEAT) == 0) {
 301                 op[0] = argv[1][0];
 302                 if (strlen(argv[1]) > 1)
 303                         op[1] = argv[1][1];
 304                 else
 305                         op[1] = '\0';
 306
 307                 if (argc >= 3)
 308                         extract_range(argv[2], &addrlo, &addrhi);
 309                 if (argc >= 4)
 310                         extract_range(argv[3], &reglo, &reghi);
 311                 if (argc >= 5)
 312                         data = simple_strtoul(argv[4], NULL, 16);
 313                 if (argc >= 6)
 314                         mask = simple_strtoul(argv[5], NULL, 16);
 315         }
 316
 317         if (addrhi > 31) {
 318                 printf("Incorrect PHY address. Range should be 0-31\n");
 319                 return CMD_RET_USAGE;
 320         }
 321
 322         /* use current device */
 323         devname = miiphy_get_current_dev();
 324
 325         /*
 326          * check info/read/write.
 327          */
 328         if (op[0] == 'i') {
 329                 unsigned char j, start, end;
 330                 unsigned int oui;
 331                 unsigned char model;
 332                 unsigned char rev;
 333
 334                 /*
 335                  * Look for any and all PHYs.  Valid addresses are 0..31.
 336                  */
 337                 if (argc >= 3) {
 338                         start = addrlo; end = addrhi;
 339                 } else {
 340                         start = 0; end = 31;
 341                 }
 342
 343                 for (j = start; j <= end; j++) {
 344                         if (miiphy_info (devname, j, &oui, &model, &rev) == 0) {
 345                                 printf("PHY 0x%02X: "
 346                                         "OUI = 0x%04X, "
 347                                         "Model = 0x%02X, "
 348                                         "Rev = 0x%02X, "
 349                                         "%3dbase%s, %s\n",
 350                                         j, oui, model, rev,
 351                                         miiphy_speed (devname, j),
 352                                         miiphy_is_1000base_x (devname, j)
 353                                                 ? "X" : "T",
 354                                         (miiphy_duplex (devname, j) == FULL)
 355                                                 ? "FDX" : "HDX");
 356                         }
 357                 }
 358         } else if (op[0] == 'r') {
 359                 for (addr = addrlo; addr <= addrhi; addr++) {
 360                         for (reg = reglo; reg <= reghi; reg++) {
 361                                 data = 0xffff;
 362                                 if (miiphy_read (devname, addr, reg, &data) != 0) {
 363                                         printf(
 364                                         "Error reading from the PHY addr=%02x reg=%02x\n",
 365                                                 addr, reg);
 366                                         rcode = 1;
 367                                 } else {
 368                                         if ((addrlo != addrhi) || (reglo != reghi))
 369                                                 printf("addr=%02x reg=%02x data=",
 370                                                         (uint)addr, (uint)reg);
 371                                         printf("%04X\n", data & 0x0000FFFF);
 372                                 }
 373                         }
 374                         if ((addrlo != addrhi) && (reglo != reghi))
 375                                 printf("\n");
 376                 }
 377         } else if (op[0] == 'w') {
 378                 for (addr = addrlo; addr <= addrhi; addr++) {
 379                         for (reg = reglo; reg <= reghi; reg++) {
 380                                 if (miiphy_write (devname, addr, reg, data) != 0) {
 381                                         printf("Error writing to the PHY addr=%02x reg=%02x\n",
 382                                                 addr, reg);
 383                                         rcode = 1;
 384                                 }
 385                         }
 386                 }
 387         } else if (op[0] == 'm') {
 388                 for (addr = addrlo; addr <= addrhi; addr++) {
 389                         for (reg = reglo; reg <= reghi; reg++) {
 390                                 unsigned short val = 0;
 391                                 if (miiphy_read(devname, addr,
 392                                                 reg, &val)) {
 393                                         printf("Error reading from the PHY");
 394                                         printf(" addr=%02x", addr);
 395                                         printf(" reg=%02x\n", reg);
 396                                         rcode = 1;
 397                                 } else {
 398                                         val = (val & ~mask) | (data & mask);
 399                                         if (miiphy_write(devname, addr,
 400                                                          reg, val)) {
 401                                                 printf("Error writing to the PHY");
 402                                                 printf(" addr=%02x", addr);
 403                                                 printf(" reg=%02x\n", reg);
 404                                                 rcode = 1;
 405                                         }
 406                                 }
 407                         }
 408                 }
 409         } else if (strncmp(op, "du", 2) == 0) {
 410                 ushort regs[6];
 411                 int ok = 1;
 412                 if ((reglo > 5) || (reghi > 5)) {
 413                         printf(
 414                                 "The MII dump command only formats the "
 415                                 "standard MII registers, 0-5.\n");
 416                         return 1;
 417                 }
 418                 for (addr = addrlo; addr <= addrhi; addr++) {
 419                         for (reg = reglo; reg < reghi + 1; reg++) {
 420                                 if (miiphy_read(devname, addr, reg, &regs[reg]) != 0) {
 421                                         ok = 0;
 422                                         printf(
 423                                         "Error reading from the PHY addr=%02x reg=%02x\n",
 424                                                 addr, reg);
 425                                         rcode = 1;
 426                                 }
 427                         }
 428                         if (ok)
 429                                 MII_dump_0_to_5(regs, reglo, reghi);
 430                         printf("\n");
 431                 }
 432         } else if (strncmp(op, "de", 2) == 0) {
 433                 if (argc == 2)
 434                         miiphy_listdev ();
 435                 else
 436                         miiphy_set_current_dev (argv[2]);
 437         } else {
 438                 return CMD_RET_USAGE;
 439         }
 440
 441         /*
 442          * Save the parameters for repeats.
 443          */
 444         last_op[0] = op[0];
 445         last_op[1] = op[1];
 446         last_addr_lo = addrlo;
 447         last_addr_hi = addrhi;
 448         last_reg_lo  = reglo;
 449         last_reg_hi  = reghi;
 450         last_data    = data;
 451         last_mask    = mask;
 452
 453         return rcode;
 454 }
 455
 456 /***************************************************/
 457
 458 U_BOOT_CMD(
 459         mii, 6, 1, do_mii,
 460         "MII utility commands",
 461         "device                            - list available devices\n"
 462         "mii device <devname>                  - set current device\n"
 463         "mii info   <addr>                     - display MII PHY info\n"
 464         "mii read   <addr> <reg>               - read  MII PHY <addr> register <reg>\n"
 465         "mii write  <addr> <reg> <data>        - write MII PHY <addr> register <reg>\n"
 466         "mii modify <addr> <reg> <data> <mask> - modify MII PHY <addr> register <reg>\n"
 467         "                                        updating bits identified in <mask>\n"
 468         "mii dump   <addr> <reg>               - pretty-print <addr> <reg> (0-5 only)\n"
 469         "Addr and/or reg may be ranges, e.g. 2-7."
 470 );