target/linux/generic-2.6/files/drivers/net/phy/ip175c.c

   1 /*
   2  * swconfig-ip175c.c: Swconfig configuration for IC+ IP175C switch
   3  *
   4  * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
   5  * Copyright (C) 2008 Martin Mares <mj@ucw.cz>
   6  * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   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
  10  * as published by the Free Software Foundation; either version 2
  11  * of 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
  19 #include <linux/kernel.h>
  20 #include <linux/module.h>
  21 #include <linux/init.h>
  22 #include <linux/list.h>
  23 #include <linux/skbuff.h>
  24 #include <linux/mii.h>
  25 #include <linux/phy.h>
  26 #include <linux/delay.h>
  27 #include <linux/switch.h>
  28
  29 #define MAX_VLANS 16
  30 #define MAX_PORTS 9
  31 #undef DUMP_MII_IO
  32
  33 typedef struct ip175c_reg {
  34         u16 p;                  // phy
  35         u16 m;                  // mii
  36 } reg;
  37 typedef char bitnum;
  38
  39 #define NOTSUPPORTED {-1,-1}
  40
  41 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
  42
  43 struct ip175c_state;
  44
  45 /*********** CONSTANTS ***********/
  46 struct register_mappings {
  47         char *NAME;
  48         u16 MODEL_NO;                   // Compare to bits 4-9 of MII register 0,3.
  49         bitnum NUM_PORTS;
  50         bitnum CPU_PORT;
  51
  52 /* The default VLAN for each port.
  53          Default: 0x0001 for Ports 0,1,2,3
  54                   0x0002 for Ports 4,5 */
  55         reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
  56
  57 /* These ports are tagged.
  58          Default: 0x00 */
  59         reg ADD_TAG_REG;
  60         reg REMOVE_TAG_REG;
  61         bitnum ADD_TAG_BIT[MAX_PORTS];
  62 /* These ports are untagged.
  63          Default: 0x00 (i.e. do not alter any VLAN tags...)
  64          Maybe set to 0 if user disables VLANs. */
  65         bitnum REMOVE_TAG_BIT[MAX_PORTS];
  66
  67 /* Port M and Port N are on the same VLAN.
  68          Default: All ports on all VLANs. */
  69 // Use register {29, 19+N/2}
  70         reg VLAN_LOOKUP_REG;
  71 // Port 5 uses register {30, 18} but same as odd bits.
  72         reg VLAN_LOOKUP_REG_5;          // in a different register on IP175C.
  73         bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
  74         bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
  75
  76 /* This VLAN corresponds to which ports.
  77          Default: 0x2f,0x30,0x3f,0x3f... */
  78         reg TAG_VLAN_MASK_REG;
  79         bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
  80         bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
  81
  82         int RESET_VAL;
  83         reg RESET_REG;
  84
  85         reg MODE_REG;
  86         int MODE_VAL;
  87
  88 /* General flags */
  89         reg ROUTER_CONTROL_REG;
  90         reg VLAN_CONTROL_REG;
  91         bitnum TAG_VLAN_BIT;
  92         bitnum ROUTER_EN_BIT;
  93         bitnum NUMLAN_GROUPS_MAX;
  94         bitnum NUMLAN_GROUPS_BIT;
  95
  96         reg MII_REGISTER_EN;
  97         bitnum MII_REGISTER_EN_BIT;
  98
  99         // set to 1 for 178C, 0 for 175C.
 100         bitnum SIMPLE_VLAN_REGISTERS;   // 175C has two vlans per register but 178C has only one.
 101
 102         // Pointers to functions which manipulate hardware state
 103         int (*get_flags)(struct ip175c_state *state);
 104         int (*get_state)(struct ip175c_state *state);
 105         int (*update_state)(struct ip175c_state *state);
 106         int (*set_vlan_mode)(struct ip175c_state *state);
 107         int (*reset)(struct ip175c_state *state);
 108 };
 109
 110 static int ip175c_get_flags(struct ip175c_state *state);
 111 static int ip175c_get_state(struct ip175c_state *state);
 112 static int ip175c_update_state(struct ip175c_state *state);
 113 static int ip175c_set_vlan_mode(struct ip175c_state *state);
 114 static int ip175c_do_reset(struct ip175c_state *state);
 115
 116 static const struct register_mappings IP178C = {
 117         .NAME = "IP178C",
 118         .MODEL_NO = 0x18,
 119         .VLAN_DEFAULT_TAG_REG = {
 120                 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
 121                 {30,9},{30,10},{30,11},
 122         },
 123
 124         .ADD_TAG_REG = {30,12},
 125         .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
 126         .REMOVE_TAG_REG = {30,13},
 127         .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
 128
 129         .SIMPLE_VLAN_REGISTERS = 1,
 130
 131         .VLAN_LOOKUP_REG = {31,0},// +N
 132         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
 133         .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 134         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 135
 136         .TAG_VLAN_MASK_REG = {30,14}, // +N
 137         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 138         .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 139
 140         .RESET_VAL = 0x55AA,
 141         .RESET_REG = {30,0},
 142         .MODE_VAL = 0,
 143         .MODE_REG = NOTSUPPORTED,
 144
 145         .ROUTER_CONTROL_REG = {30,30},
 146         .ROUTER_EN_BIT = 11,
 147         .NUMLAN_GROUPS_MAX = 8,
 148         .NUMLAN_GROUPS_BIT = 8, // {0-2}
 149
 150         .VLAN_CONTROL_REG = {30,13},
 151         .TAG_VLAN_BIT = 3,
 152
 153         .CPU_PORT = 8,
 154         .NUM_PORTS = 9,
 155
 156         .MII_REGISTER_EN = NOTSUPPORTED,
 157
 158         .get_flags = ip175c_get_flags,
 159         .get_state = ip175c_get_state,
 160         .update_state = ip175c_update_state,
 161         .set_vlan_mode = ip175c_set_vlan_mode,
 162         .reset = ip175c_do_reset,
 163 };
 164
 165 static const struct register_mappings IP175C = {
 166         .NAME = "IP175C",
 167         .MODEL_NO = 0x18,
 168         .VLAN_DEFAULT_TAG_REG = {
 169                 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
 170                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 171         },
 172
 173         .ADD_TAG_REG = {29,23},
 174         .REMOVE_TAG_REG = {29,23},
 175         .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
 176         .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
 177
 178         .SIMPLE_VLAN_REGISTERS = 0,
 179
 180         .VLAN_LOOKUP_REG = {29,19},// +N/2
 181         .VLAN_LOOKUP_REG_5 = {30,18},
 182         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
 183         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
 184
 185         .TAG_VLAN_MASK_REG = {30,1}, // +N/2
 186         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
 187         .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
 188
 189         .RESET_VAL = 0x175C,
 190         .RESET_REG = {30,0},
 191         .MODE_VAL = 0x175C,
 192         .MODE_REG = {29,31},
 193
 194         .ROUTER_CONTROL_REG = {30,9},
 195         .ROUTER_EN_BIT = 3,
 196         .NUMLAN_GROUPS_MAX = 8,
 197         .NUMLAN_GROUPS_BIT = 0, // {0-2}
 198
 199         .VLAN_CONTROL_REG = {30,9},
 200         .TAG_VLAN_BIT = 7,
 201
 202         .NUM_PORTS = 6,
 203         .CPU_PORT = 5,
 204
 205         .MII_REGISTER_EN = NOTSUPPORTED,
 206
 207         .get_flags = ip175c_get_flags,
 208         .get_state = ip175c_get_state,
 209         .update_state = ip175c_update_state,
 210         .set_vlan_mode = ip175c_set_vlan_mode,
 211         .reset = ip175c_do_reset,
 212 };
 213
 214 static const struct register_mappings IP175A = {
 215         .NAME = "IP175A",
 216         .MODEL_NO = 0x05,
 217         .VLAN_DEFAULT_TAG_REG = {
 218                 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
 219                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 220         },
 221
 222         .ADD_TAG_REG = {0,23},
 223         .REMOVE_TAG_REG = {0,23},
 224         .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
 225         .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
 226
 227         .SIMPLE_VLAN_REGISTERS = 0,
 228
 229         // Only programmable via EEPROM
 230         .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
 231         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
 232         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
 233         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
 234
 235         .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
 236         .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 237         .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 238
 239         .RESET_VAL = -1,
 240         .RESET_REG = NOTSUPPORTED,
 241         .MODE_VAL = 0,
 242         .MODE_REG = NOTSUPPORTED,
 243
 244         .ROUTER_CONTROL_REG = NOTSUPPORTED,
 245         .VLAN_CONTROL_REG = NOTSUPPORTED,
 246         .TAG_VLAN_BIT = -1,
 247         .ROUTER_EN_BIT = -1,
 248         .NUMLAN_GROUPS_MAX = -1,
 249         .NUMLAN_GROUPS_BIT = -1, // {0-2}
 250
 251         .NUM_PORTS = 5,
 252         .CPU_PORT = 4,
 253
 254         .MII_REGISTER_EN = {0, 18},
 255         .MII_REGISTER_EN_BIT = 7,
 256
 257         .get_flags = ip175c_get_flags,
 258         .get_state = ip175c_get_state,
 259         .update_state = ip175c_update_state,
 260         .set_vlan_mode = ip175c_set_vlan_mode,
 261         .reset = ip175c_do_reset,
 262 };
 263
 264
 265 struct ip175c_state {
 266         struct switch_dev dev;
 267         struct mii_bus *mii_bus;
 268         bool registered;
 269
 270         int router_mode;                // ROUTER_EN
 271         int vlan_enabled;               // TAG_VLAN_EN
 272         struct port_state {
 273                 u16 pvid;
 274                 unsigned int shareports;
 275         } ports[MAX_PORTS];
 276         unsigned int add_tag;
 277         unsigned int remove_tag;
 278         int num_vlans;
 279         struct vlan_state {
 280                 unsigned int ports;
 281         } vlans[MAX_VLANS];
 282         const struct register_mappings *regs;
 283         reg proc_mii;   // phy/reg for the low level register access via swconfig
 284
 285         char buf[80];
 286 };
 287
 288
 289 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
 290 {
 291         int val = mdiobus_read(state->mii_bus, port, reg);
 292         if (val < 0)
 293                 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
 294 #ifdef DUMP_MII_IO
 295         else
 296                 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
 297 #endif
 298         return val;
 299 }
 300
 301 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
 302 {
 303         int err;
 304
 305 #ifdef DUMP_MII_IO
 306         pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
 307 #endif
 308         err = mdiobus_write(state->mii_bus, port, reg, val);
 309         if (err < 0)
 310                 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
 311         return err;
 312 }
 313
 314 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
 315 {
 316         int val = ip_phy_read(state, port, reg);
 317         if (val < 0)
 318                 return 0;
 319         return ip_phy_write(state, port, reg, (val & ~mask) | data);
 320 }
 321
 322 static int getPhy(struct ip175c_state *state, reg mii)
 323 {
 324         if (!REG_SUPP(mii))
 325                 return -EFAULT;
 326         return ip_phy_read(state, mii.p, mii.m);
 327 }
 328
 329 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
 330 {
 331         int err;
 332
 333         if (!REG_SUPP(mii))
 334                 return -EFAULT;
 335         err = ip_phy_write(state, mii.p, mii.m, value);
 336         if (err < 0)
 337                 return err;
 338         getPhy(state, mii);
 339         return 0;
 340 }
 341
 342
 343 /**
 344  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 345  * NOTE: these macros will return if there is an error!
 346  */
 347
 348 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 349         do {                                                    \
 350                 int i, val = getPhy((state), (addr));           \
 351                 if (val < 0)                                    \
 352                         return val;                             \
 353                 (bits) = 0;                                     \
 354                 for (i = 0; i < MAX_PORTS; i++) {               \
 355                         if ((bit_lookup)[i] == -1) continue;    \
 356                         if (val & (1<<(bit_lookup)[i]))         \
 357                                 (bits) |= (1<<i);               \
 358                 }                                               \
 359         } while (0)
 360
 361 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 362         do {                                                    \
 363                 int i, val = getPhy((state), (addr));           \
 364                 if (val < 0)                                    \
 365                         return val;                             \
 366                 for (i = 0; i < MAX_PORTS; i++) {               \
 367                         unsigned int newmask = ((bits)&(1<<i)); \
 368                         if ((bit_lookup)[i] == -1) continue;    \
 369                         val &= ~(1<<(bit_lookup)[i]);           \
 370                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 371                 }                                               \
 372                 val = setPhy((state), (addr), val);             \
 373                 if (val < 0)                                    \
 374                         return val;                             \
 375         } while (0)
 376
 377
 378 static int get_model(struct ip175c_state *state)
 379 {
 380         reg oui_id_reg = {0, 2};
 381         int oui_id;
 382         reg model_no_reg = {0, 3};
 383         int model_no, model_no_orig;
 384
 385         // 175 and 178 have the same oui ID.
 386         reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
 387         int is_178c = 0;
 388
 389         oui_id = getPhy(state, oui_id_reg);
 390         if (oui_id != 0x0243) {
 391                 // non
 392                 return -ENODEV; // Not a IC+ chip.
 393         }
 394         oui_id = getPhy(state, oui_id_reg_178c);
 395         if (oui_id == 0x0243) {
 396                 is_178c = 1;
 397         }
 398
 399         model_no_orig = getPhy(state, model_no_reg);
 400         if (model_no_orig < 0) {
 401                 return -ENODEV;
 402         }
 403         model_no = model_no_orig >> 4; // shift out revision number.
 404         model_no &= 0x3f; // only take the model number (low 6 bits).
 405         if (model_no == IP175A.MODEL_NO) {
 406                 state->regs = &IP175A;
 407         } else if (model_no == IP175C.MODEL_NO) {
 408                 if (is_178c) {
 409                         state->regs = &IP178C;
 410                 } else {
 411                         state->regs = &IP175C;
 412                 }
 413         } else {
 414                 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
 415                 return -EPERM;
 416         }
 417         return 0;
 418 }
 419
 420 /** Get only the vlan and router flags on the router **/
 421 static int ip175c_get_flags(struct ip175c_state *state)
 422 {
 423         int val;
 424
 425         state->router_mode = 0;
 426         state->vlan_enabled = -1; // hack
 427         state->num_vlans = 0;
 428
 429         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 430                 return 0; // not an error if it doesn't support enable vlan.
 431         }
 432
 433         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 434         if (val < 0) {
 435                 return val;
 436         }
 437         if (state->regs->ROUTER_EN_BIT >= 0)
 438                 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
 439
 440         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 441                 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
 442                 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
 443                 state->num_vlans+=1; // does not include WAN.
 444         }
 445
 446         val = getPhy(state, state->regs->VLAN_CONTROL_REG);
 447         if (val < 0) {
 448                 return 0;
 449         }
 450         if (state->regs->TAG_VLAN_BIT >= 0)
 451                 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
 452
 453         return  0;
 454 }
 455
 456 /** Get all state variables for VLAN mappings and port-based tagging **/
 457 static int ip175c_get_state(struct ip175c_state *state)
 458 {
 459         int i, j;
 460         int ret;
 461
 462         ret = ip175c_get_flags(state);
 463         if (ret < 0) {
 464                 return ret;
 465         }
 466
 467         GET_PORT_BITS(state, state->remove_tag,
 468                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 469         GET_PORT_BITS(state, state->add_tag,
 470                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 471
 472         if (state->vlan_enabled == -1) {
 473                 // not sure how to get this...
 474                 state->vlan_enabled = (state->remove_tag || state->add_tag);
 475         }
 476
 477         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 478                 for (j=0; j<MAX_PORTS; j++) {
 479                         state->ports[j].shareports = 0; // initialize them in case.
 480                 }
 481                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 482                         reg addr;
 483                         const bitnum *bit_lookup = (j%2==0)?
 484                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 485                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 486                         addr = state->regs->VLAN_LOOKUP_REG;
 487                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 488                                 addr.m += j;
 489                         } else {
 490                                 switch (j) {
 491                                 case 0:
 492                                 case 1:
 493                                         break;
 494                                 case 2:
 495                                 case 3:
 496                                         addr.m+=1;
 497                                         break;
 498                                 case 4:
 499                                         addr.m+=2;
 500                                         break;
 501                                 case 5:
 502                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 503                                         break;
 504                                 }
 505                         }
 506
 507                         if (REG_SUPP(addr)) {
 508                                 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 509                         }
 510                 }
 511         } else {
 512                 for (j=0; j<MAX_PORTS; j++) {
 513                         state->ports[j].shareports = 0xff;
 514                 }
 515         }
 516
 517         for (i=0; i<MAX_PORTS; i++) {
 518                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 519                         int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
 520                         if (val < 0) {
 521                                 return val;
 522                         }
 523                         state->ports[i].pvid = val;
 524                 } else {
 525                         state->ports[i].pvid = 0;
 526                 }
 527         }
 528
 529         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 530                 for (j=0; j<MAX_VLANS; j++) {
 531                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 532                         const bitnum *bit_lookup = (j%2==0)?
 533                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 534                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 535                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 536                                 addr.m += j;
 537                         } else {
 538                                 addr.m += j/2;
 539                         }
 540                         GET_PORT_BITS(state, state->vlans[j].ports, addr, bit_lookup);
 541                 }
 542         } else {
 543                 for (j=0; j<MAX_VLANS; j++) {
 544                         state->vlans[j].ports = 0;
 545                         for (i=0; i<state->regs->NUM_PORTS; i++) {
 546                                 if ((state->ports[i].pvid == j) ||
 547                                                 (state->ports[i].pvid == 0)) {
 548                                         state->vlans[j].ports |= (1<<i);
 549                                 }
 550                         }
 551                 }
 552         }
 553
 554         return 0;
 555 }
 556
 557 /** Only set vlan and router flags in the switch **/
 558 static int ip175c_set_flags(struct ip175c_state *state)
 559 {
 560         int val;
 561
 562         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 563                 return 0;
 564         }
 565
 566         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 567         if (val < 0) {
 568                 return val;
 569         }
 570         if (state->regs->ROUTER_EN_BIT >= 0) {
 571                 if (state->router_mode) {
 572                         val |= (1<<state->regs->ROUTER_EN_BIT);
 573                 } else {
 574                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 575                 }
 576         }
 577         if (state->regs->TAG_VLAN_BIT >= 0) {
 578                 if (state->vlan_enabled) {
 579                         val |= (1<<state->regs->TAG_VLAN_BIT);
 580                 } else {
 581                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 582                 }
 583         }
 584         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 585                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 586                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 587                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 588                 } else if (state->num_vlans >= 1) {
 589                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 590                 }
 591         }
 592         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 593 }
 594
 595 /** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 596 static int ip175c_set_state(struct ip175c_state *state)
 597 {
 598         int j;
 599         int i;
 600         SET_PORT_BITS(state, state->add_tag,
 601                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 602         SET_PORT_BITS(state, state->remove_tag,
 603                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 604
 605         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 606                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 607                         reg addr;
 608                         const bitnum *bit_lookup = (j%2==0)?
 609                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 610                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 611
 612                         // duplicate code -- sorry
 613                         addr = state->regs->VLAN_LOOKUP_REG;
 614                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 615                                 addr.m += j;
 616                         } else {
 617                                 switch (j) {
 618                                 case 0:
 619                                 case 1:
 620                                         break;
 621                                 case 2:
 622                                 case 3:
 623                                         addr.m+=1;
 624                                         break;
 625                                 case 4:
 626                                         addr.m+=2;
 627                                         break;
 628                                 case 5:
 629                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 630                                         break;
 631                                 default:
 632                                         addr.m = -1; // shouldn't get here, but...
 633                                         break;
 634                                 }
 635                         }
 636                         //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 637                         if (REG_SUPP(addr)) {
 638                                 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 639                         }
 640                 }
 641         }
 642         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 643                 for (j=0; j<MAX_VLANS; j++) {
 644                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 645                         const bitnum *bit_lookup = (j%2==0)?
 646                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 647                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 648                         unsigned int vlan_mask;
 649                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 650                                 addr.m += j;
 651                         } else {
 652                                 addr.m += j/2;
 653                         }
 654                         vlan_mask = state->vlans[j].ports;
 655                         SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 656                 }
 657         }
 658
 659         for (i=0; i<MAX_PORTS; i++) {
 660                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 661                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 662                                         state->ports[i].pvid);
 663                         if (err < 0) {
 664                                 return err;
 665                         }
 666                 }
 667         }
 668
 669         return ip175c_set_flags(state);
 670 }
 671
 672 /**
 673  *  Uses only the VLAN port mask and the add tag mask to generate the other fields:
 674  *  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 675  */
 676 static void ip175c_correct_vlan_state(struct ip175c_state *state)
 677 {
 678         int i, j;
 679         state->num_vlans = 0;
 680         for (i=0; i<MAX_VLANS; i++) {
 681                 if (state->vlans[i].ports != 0) {
 682                         state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
 683                 }
 684         }
 685
 686         for (i=0; i<state->regs->NUM_PORTS; i++) {
 687                 unsigned int portmask = (1<<i);
 688                 if (!state->vlan_enabled) {
 689                         // Share with everybody!
 690                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 691                         continue;
 692                 }
 693                 state->ports[i].shareports = portmask;
 694                 for (j=0; j<MAX_VLANS; j++) {
 695                         if (state->vlans[j].ports & portmask)
 696                                 state->ports[i].shareports |= state->vlans[j].ports;
 697                 }
 698         }
 699 }
 700
 701 static int ip175c_update_state(struct ip175c_state *state)
 702 {
 703         ip175c_correct_vlan_state(state);
 704         return ip175c_set_state(state);
 705 }
 706
 707 static int ip175c_set_vlan_mode(struct ip175c_state *state)
 708 {
 709         return ip175c_update_state(state);
 710 }
 711
 712 static int ip175c_do_reset(struct ip175c_state *state)
 713 {
 714         int err;
 715
 716         if (REG_SUPP(state->regs->MODE_REG)) {
 717                 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
 718                 if (err < 0)
 719                         return err;
 720                 err = getPhy(state, state->regs->MODE_REG);
 721                 if (err < 0)
 722                         return err;
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 729 {
 730         struct ip175c_state *state = dev->priv;
 731         int err;
 732
 733         err = state->regs->get_state(state); // May be set in get_state.
 734         if (err < 0)
 735                 return err;
 736         val->value.i = state->vlan_enabled;
 737         return 0;
 738 }
 739
 740 static void ip175c_reset_vlan_config(struct ip175c_state *state)
 741 {
 742         int i;
 743
 744         state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
 745         state->add_tag = 0x0000;
 746         for (i = 0; i < MAX_VLANS; i++)
 747                 state->vlans[i].ports = 0x0000;
 748         for (i = 0; i < MAX_PORTS; i++)
 749                 state->ports[i].pvid = 0;
 750 }
 751
 752 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 753 {
 754         struct ip175c_state *state = dev->priv;
 755         int err;
 756         int enable;
 757
 758         err = state->regs->get_state(state);
 759         if (err < 0)
 760                 return err;
 761         enable = val->value.i;
 762
 763         if (state->vlan_enabled == enable) {
 764                 // Do not change any state.
 765                 return 0;
 766         }
 767         state->vlan_enabled = enable;
 768
 769         // Otherwise, if we are switching state, set fields to a known default.
 770         ip175c_reset_vlan_config(state);
 771
 772         return state->regs->set_vlan_mode(state);
 773 }
 774
 775 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
 776 {
 777         struct ip175c_state *state = dev->priv;
 778         int err;
 779         int b;
 780         int ind;
 781         unsigned int ports;
 782
 783         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 784                 return -EINVAL;
 785
 786         err = state->regs->get_state(state);
 787         if (err<0)
 788                 return err;
 789
 790         ports = state->vlans[val->port_vlan].ports;
 791         b = 0;
 792         ind = 0;
 793         while (b < MAX_PORTS) {
 794                 if (ports&1) {
 795                         int istagged = ((state->add_tag >> b) & 1);
 796                         val->value.ports[ind].id = b;
 797                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 798                         ind++;
 799                 }
 800                 b++;
 801                 ports >>= 1;
 802         }
 803         val->len = ind;
 804
 805         return 0;
 806 }
 807
 808 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
 809 {
 810         struct ip175c_state *state = dev->priv;
 811         int i;
 812         int err;
 813
 814         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 815                 return -EINVAL;
 816
 817         err = state->regs->get_state(state);
 818         if (err < 0)
 819                 return err;
 820
 821         state->vlans[val->port_vlan].ports = 0;
 822         for (i = 0; i < val->len; i++) {
 823                 unsigned int bitmask = (1<<val->value.ports[i].id);
 824                 state->vlans[val->port_vlan].ports |= bitmask;
 825                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 826                         state->add_tag |= bitmask;
 827                         state->remove_tag &= (~bitmask);
 828                 } else {
 829                         state->add_tag &= (~bitmask);
 830                         state->remove_tag |= bitmask;
 831                 }
 832         }
 833
 834         return state->regs->update_state(state);
 835 }
 836
 837 static int ip175c_apply(struct switch_dev *dev)
 838 {
 839         struct ip175c_state *state = dev->priv;
 840         int err;
 841
 842         err = state->regs->get_flags(state);
 843         if (err < 0)
 844                 return err;
 845
 846         if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
 847                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 848                 if (val < 0) {
 849                         return val;
 850                 }
 851                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 852                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 853         }
 854         return 0;
 855 }
 856
 857 static int ip175c_reset(struct switch_dev *dev)
 858 {
 859         struct ip175c_state *state = dev->priv;
 860         int i, err;
 861
 862         err = state->regs->get_flags(state);
 863         if (err < 0)
 864                 return err;
 865
 866         if (REG_SUPP(state->regs->RESET_REG)) {
 867                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 868                 if (err < 0)
 869                         return err;
 870                 err = getPhy(state, state->regs->RESET_REG);
 871
 872                 /*
 873                  *  Data sheet specifies reset period to be 2 msec.
 874                  *  (I don't see any mention of the 2ms delay in the IP178C spec, only
 875                  *  in IP175C, but it can't hurt.)
 876                  */
 877                 mdelay(2);
 878         }
 879
 880         /* reset switch ports */
 881         for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
 882                 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
 883                 if (err < 0)
 884                         return err;
 885         }
 886
 887         ip175c_reset_vlan_config(state);
 888
 889         return state->regs->reset(state);
 890 }
 891
 892 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 893 {
 894         struct ip175c_state *state = dev->priv;
 895         int err;
 896
 897         err = state->regs->get_state(state);
 898         if (err < 0)
 899                 return err;
 900
 901         if (state->add_tag & (1<<val->port_vlan)) {
 902                 if (state->remove_tag & (1<<val->port_vlan))
 903                         val->value.i = 3; // shouldn't ever happen.
 904                 else
 905                         val->value.i = 1;
 906         } else {
 907                 if (state->remove_tag & (1<<val->port_vlan))
 908                         val->value.i = 0;
 909                 else
 910                         val->value.i = 2;
 911         }
 912         return 0;
 913 }
 914
 915 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 916 {
 917         struct ip175c_state *state = dev->priv;
 918         int err;
 919
 920         err = state->regs->get_state(state);
 921         if (err < 0)
 922                 return err;
 923
 924         state->add_tag &= ~(1<<val->port_vlan);
 925         state->remove_tag &= ~(1<<val->port_vlan);
 926
 927         if (val->value.i == 0)
 928                 state->remove_tag |= (1<<val->port_vlan);
 929         if (val->value.i == 1)
 930                 state->add_tag |= (1<<val->port_vlan);
 931
 932         return state->regs->update_state(state);
 933 }
 934
 935 /** Get the current phy address */
 936 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 937 {
 938         struct ip175c_state *state = dev->priv;
 939
 940         val->value.i = state->proc_mii.p;
 941         return 0;
 942 }
 943
 944 /** Set a new phy address for low level access to registers */
 945 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 946 {
 947         struct ip175c_state *state = dev->priv;
 948         int new_reg = val->value.i;
 949
 950         if (new_reg < 0 || new_reg > 31)
 951                 state->proc_mii.p = (u16)-1;
 952         else
 953                 state->proc_mii.p = (u16)new_reg;
 954         return 0;
 955 }
 956
 957 /** Get the current register number */
 958 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 959 {
 960         struct ip175c_state *state = dev->priv;
 961
 962         val->value.i = state->proc_mii.m;
 963         return 0;
 964 }
 965
 966 /** Set a new register address for low level access to registers */
 967 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 968 {
 969         struct ip175c_state *state = dev->priv;
 970         int new_reg = val->value.i;
 971
 972         if (new_reg < 0 || new_reg > 31)
 973                 state->proc_mii.m = (u16)-1;
 974         else
 975                 state->proc_mii.m = (u16)new_reg;
 976         return 0;
 977 }
 978
 979 /** Get the register content of state->proc_mii */
 980 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 981 {
 982         struct ip175c_state *state = dev->priv;
 983         int retval = -EINVAL;
 984         if (REG_SUPP(state->proc_mii))
 985                 retval = getPhy(state, state->proc_mii);
 986
 987         if (retval < 0) {
 988                 return retval;
 989         } else {
 990                 val->value.i = retval;
 991                 return 0;
 992         }
 993 }
 994
 995 /** Write a value to the register defined by phy/reg above */
 996 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 997 {
 998         struct ip175c_state *state = dev->priv;
 999         int myval, err = -EINVAL;
1000
1001         myval = val->value.i;
1002         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
1003                 err = setPhy(state, state->proc_mii, (u16)myval);
1004         }
1005         return err;
1006 }
1007
1008 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1009 {
1010         struct ip175c_state *state = dev->priv;
1011         val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
1012         return 0;
1013 }
1014
1015 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1016 {
1017         struct ip175c_state *state = dev->priv;
1018         int nr = val->port_vlan;
1019         int ctrl;
1020         int autoneg;
1021         int speed;
1022         if (val->value.i == 100) {
1023                 speed = 1;
1024                 autoneg = 0;
1025         } else if (val->value.i == 10) {
1026                 speed = 0;
1027                 autoneg = 0;
1028         } else {
1029                 autoneg = 1;
1030                 speed = 1;
1031         }
1032
1033         /* Can't set speed for cpu port */
1034         if (nr == state->regs->CPU_PORT)
1035                 return -EINVAL;
1036
1037         if (nr >= dev->ports || nr < 0)
1038                 return -EINVAL;
1039
1040         ctrl = ip_phy_read(state, nr, 0);
1041         if (ctrl < 0)
1042                 return -EIO;
1043
1044         ctrl &= (~(1<<12));
1045         ctrl &= (~(1<<13));
1046         ctrl |= (autoneg<<12);
1047         ctrl |= (speed<<13);
1048
1049         return ip_phy_write(state, nr, 0, ctrl);
1050 }
1051
1052 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1053 {
1054         struct ip175c_state *state = dev->priv;
1055         int nr = val->port_vlan;
1056         int speed, status;
1057
1058         if (nr == state->regs->CPU_PORT) {
1059                 val->value.i = 100;
1060                 return 0;
1061         }
1062
1063         if (nr >= dev->ports || nr < 0)
1064                 return -EINVAL;
1065
1066         status = ip_phy_read(state, nr, 1);
1067         speed = ip_phy_read(state, nr, 18);
1068         if (status < 0 || speed < 0)
1069                 return -EIO;
1070
1071         if (status & 4)
1072                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1073         else
1074                 val->value.i = 0;
1075
1076         return 0;
1077 }
1078
1079 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1080 {
1081         struct ip175c_state *state = dev->priv;
1082         int ctrl, speed, status;
1083         int nr = val->port_vlan;
1084         int len;
1085         char *buf = state->buf; // fixed-length at 80.
1086
1087         if (nr == state->regs->CPU_PORT) {
1088                 sprintf(buf, "up, 100 Mbps, cpu port");
1089                 val->value.s = buf;
1090                 return 0;
1091         }
1092
1093         if (nr >= dev->ports || nr < 0)
1094                 return -EINVAL;
1095
1096         ctrl = ip_phy_read(state, nr, 0);
1097         status = ip_phy_read(state, nr, 1);
1098         speed = ip_phy_read(state, nr, 18);
1099         if (ctrl < 0 || status < 0 || speed < 0)
1100                 return -EIO;
1101
1102         if (status & 4)
1103                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1104                         ((speed & (1<<11)) ? 100 : 10),
1105                         ((speed & (1<<10)) ? "full" : "half"));
1106         else
1107                 len = sprintf(buf, "down");
1108
1109         if (ctrl & (1<<12)) {
1110                 len += sprintf(buf+len, ", auto-negotiate");
1111                 if (!(status & (1<<5)))
1112                         len += sprintf(buf+len, " (in progress)");
1113         } else {
1114                 len += sprintf(buf+len, ", fixed speed (%d)",
1115                         ((ctrl & (1<<13)) ? 100 : 10));
1116         }
1117
1118         buf[len] = '\0';
1119         val->value.s = buf;
1120         return 0;
1121 }
1122
1123 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1124 {
1125         struct ip175c_state *state = dev->priv;
1126
1127         *val = state->ports[port].pvid;
1128         return 0;
1129 }
1130
1131 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1132 {
1133         struct ip175c_state *state = dev->priv;
1134         int err;
1135
1136         if (val < 0 || val >= MAX_VLANS)
1137                 return -EINVAL;
1138
1139         err = state->regs->get_state(state);
1140         if (err < 0)
1141                 return err;
1142
1143         state->ports[port].pvid = val;
1144
1145         return state->regs->update_state(state);
1146 }
1147
1148
1149 enum Ports {
1150         IP175C_PORT_STATUS,
1151         IP175C_PORT_LINK,
1152         IP175C_PORT_TAGGED,
1153         IP175C_PORT_PVID,
1154 };
1155
1156 enum Globals {
1157         IP175C_ENABLE_VLAN,
1158         IP175C_GET_NAME,
1159         IP175C_REGISTER_PHY,
1160         IP175C_REGISTER_MII,
1161         IP175C_REGISTER_VALUE,
1162         IP175C_REGISTER_ERRNO,
1163 };
1164
1165 static const struct switch_attr ip175c_global[] = {
1166         [IP175C_ENABLE_VLAN] = {
1167                 .id = IP175C_ENABLE_VLAN,
1168                 .type = SWITCH_TYPE_INT,
1169                 .name  = "enable_vlan",
1170                 .description = "Flag to enable or disable VLANs and tagging",
1171                 .get  = ip175c_get_enable_vlan,
1172                 .set = ip175c_set_enable_vlan,
1173         },
1174         [IP175C_GET_NAME] = {
1175                 .id = IP175C_GET_NAME,
1176                 .type = SWITCH_TYPE_STRING,
1177                 .description = "Returns the type of IC+ chip.",
1178                 .name  = "name",
1179                 .get  = ip175c_read_name,
1180                 .set = NULL,
1181         },
1182         /* jal: added for low level debugging etc. */
1183         [IP175C_REGISTER_PHY] = {
1184                 .id = IP175C_REGISTER_PHY,
1185                 .type = SWITCH_TYPE_INT,
1186                 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1187                 .name  = "phy",
1188                 .get  = ip175c_get_phy,
1189                 .set = ip175c_set_phy,
1190         },
1191         [IP175C_REGISTER_MII] = {
1192                 .id = IP175C_REGISTER_MII,
1193                 .type = SWITCH_TYPE_INT,
1194                 .description = "Direct register access: set MII register number (0-31)",
1195                 .name  = "reg",
1196                 .get  = ip175c_get_reg,
1197                 .set = ip175c_set_reg,
1198         },
1199         [IP175C_REGISTER_VALUE] = {
1200                 .id = IP175C_REGISTER_VALUE,
1201                 .type = SWITCH_TYPE_INT,
1202                 .description = "Direct register access: read/write to register (0-65535)",
1203                 .name  = "val",
1204                 .get  = ip175c_get_val,
1205                 .set = ip175c_set_val,
1206         },
1207 };
1208
1209 static const struct switch_attr ip175c_vlan[] = {
1210 };
1211
1212 static const struct switch_attr ip175c_port[] = {
1213         [IP175C_PORT_STATUS] = {
1214                 .id = IP175C_PORT_STATUS,
1215                 .type = SWITCH_TYPE_STRING,
1216                 .description = "Returns Detailed port status",
1217                 .name  = "status",
1218                 .get  = ip175c_get_port_status,
1219                 .set = NULL,
1220         },
1221         [IP175C_PORT_LINK] = {
1222                 .id = IP175C_PORT_LINK,
1223                 .type = SWITCH_TYPE_INT,
1224                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1225                 .name  = "link",
1226                 .get  = ip175c_get_port_speed,
1227                 .set = ip175c_set_port_speed,
1228         },
1229         [IP175C_PORT_TAGGED] = {
1230                 .id = IP175C_PORT_LINK,
1231                 .type = SWITCH_TYPE_INT,
1232                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1233                 .name  = "tagged",
1234                 .get  = ip175c_get_tagged,
1235                 .set = ip175c_set_tagged,
1236         },
1237 };
1238
1239 static int ip175c_probe(struct phy_device *pdev)
1240 {
1241         struct ip175c_state *state;
1242         struct switch_dev *dev;
1243         int err;
1244
1245         /* We only attach to PHY 0, but use all available PHYs */
1246         if (pdev->addr != 0)
1247                 return -ENODEV;
1248
1249         state = kzalloc(sizeof(*state), GFP_KERNEL);
1250         if (!state)
1251                 return -ENOMEM;
1252
1253         dev = &state->dev;
1254         dev->attr_global.attr = ip175c_global;
1255         dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1256         dev->attr_port.attr = ip175c_port;
1257         dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1258         dev->attr_vlan.attr = ip175c_vlan;
1259         dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1260
1261         dev->get_port_pvid = ip175c_get_pvid;
1262         dev->set_port_pvid = ip175c_set_pvid;
1263         dev->get_vlan_ports = ip175c_get_ports;
1264         dev->set_vlan_ports = ip175c_set_ports;
1265         dev->apply_config = ip175c_apply;
1266         dev->reset_switch = ip175c_reset;
1267
1268         dev->priv = state;
1269         pdev->priv = state;
1270         state->mii_bus = pdev->bus;
1271
1272         err = get_model(state);
1273         if (err < 0)
1274                 goto error;
1275
1276         dev->vlans = MAX_VLANS;
1277         dev->cpu_port = state->regs->CPU_PORT;
1278         dev->ports = state->regs->NUM_PORTS;
1279         dev->name = state->regs->NAME;
1280
1281         return 0;
1282
1283 error:
1284         kfree(state);
1285         return err;
1286 }
1287
1288 static int ip175c_config_init(struct phy_device *pdev)
1289 {
1290         struct ip175c_state *state = pdev->priv;
1291         struct net_device *dev = pdev->attached_dev;
1292         int err;
1293
1294         pdev->irq = PHY_IGNORE_INTERRUPT;
1295         err = register_switch(&state->dev, dev);
1296         if (err < 0)
1297                 return err;
1298
1299         ip175c_reset(&state->dev);
1300
1301         state->registered = true;
1302         netif_carrier_on(pdev->attached_dev);
1303
1304         return 0;
1305 }
1306
1307 static void ip175c_remove(struct phy_device *pdev)
1308 {
1309         struct ip175c_state *state = pdev->priv;
1310
1311         if (state->registered)
1312                 unregister_switch(&state->dev);
1313         kfree(state);
1314 }
1315
1316 static int ip175c_config_aneg(struct phy_device *pdev)
1317 {
1318         return 0;
1319 }
1320
1321 static int ip175c_read_status(struct phy_device *pdev)
1322 {
1323         pdev->speed = SPEED_100;
1324         pdev->duplex = DUPLEX_FULL;
1325         pdev->pause = pdev->asym_pause = 0;
1326         return 0;
1327 }
1328
1329 static struct phy_driver ip175c_driver = {
1330         .name           = "IC+ IP175C",
1331         .phy_id         = 0x02430d80,
1332         .phy_id_mask    = 0x0ffffff0,
1333         .features       = PHY_BASIC_FEATURES,
1334         .probe          = ip175c_probe,
1335         .remove         = ip175c_remove,
1336         .config_init    = ip175c_config_init,
1337         .config_aneg    = ip175c_config_aneg,
1338         .read_status    = ip175c_read_status,
1339         .driver         = { .owner = THIS_MODULE },
1340 };
1341
1342 static struct phy_driver ip175a_driver = {
1343         .name           = "IC+ IP175A",
1344         .phy_id         = 0x02430c50,
1345         .phy_id_mask    = 0x0ffffff0,
1346         .features       = PHY_BASIC_FEATURES,
1347         .probe          = ip175c_probe,
1348         .remove         = ip175c_remove,
1349         .config_init    = ip175c_config_init,
1350         .config_aneg    = ip175c_config_aneg,
1351         .read_status    = ip175c_read_status,
1352         .driver         = { .owner = THIS_MODULE },
1353 };
1354
1355
1356 int __init ip175c_init(void)
1357 {
1358         int ret;
1359
1360         ret = phy_driver_register(&ip175a_driver);
1361         if (ret < 0)
1362                 return ret;
1363
1364         return phy_driver_register(&ip175c_driver);
1365 }
1366
1367 void __exit ip175c_exit(void)
1368 {
1369         phy_driver_unregister(&ip175c_driver);
1370         phy_driver_unregister(&ip175a_driver);
1371 }
1372
1373 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1374 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1375 MODULE_LICENSE("GPL");
1376
1377 module_init(ip175c_init);
1378 module_exit(ip175c_exit);