/* * (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], ®_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:%04hx) %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], ®lo, ®hi); 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, ®s[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." );