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         unsigned int vlan_ports[MAX_VLANS];
 280         const struct register_mappings *regs;
 281         reg proc_mii;   // phy/reg for the low level register access via swconfig
 282
 283         char buf[80];
 284 };
 285
 286
 287 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
 288 {
 289         int val = mdiobus_read(state->mii_bus, port, reg);
 290         if (val < 0)
 291                 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
 292 #ifdef DUMP_MII_IO
 293         else
 294                 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
 295 #endif
 296         return val;
 297 }
 298
 299 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
 300 {
 301         int err;
 302
 303 #ifdef DUMP_MII_IO
 304         pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
 305 #endif
 306         err = mdiobus_write(state->mii_bus, port, reg, val);
 307         if (err < 0)
 308                 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
 309         return err;
 310 }
 311
 312 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
 313 {
 314         int val = ip_phy_read(state, port, reg);
 315         if (val < 0)
 316                 return 0;
 317         return ip_phy_write(state, port, reg, (val & ~mask) | data);
 318 }
 319
 320 static int getPhy(struct ip175c_state *state, reg mii)
 321 {
 322         if (!REG_SUPP(mii))
 323                 return -EFAULT;
 324         return ip_phy_read(state, mii.p, mii.m);
 325 }
 326
 327 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
 328 {
 329         int err;
 330
 331         if (!REG_SUPP(mii))
 332                 return -EFAULT;
 333         err = ip_phy_write(state, mii.p, mii.m, value);
 334         if (err < 0)
 335                 return err;
 336         getPhy(state, mii);
 337         return 0;
 338 }
 339
 340
 341 /**
 342  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 343  * NOTE: these macros will return if there is an error!
 344  */
 345
 346 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 347         do {                                                    \
 348                 int i, val = getPhy((state), (addr));           \
 349                 if (val < 0)                                    \
 350                         return val;                             \
 351                 (bits) = 0;                                     \
 352                 for (i = 0; i < MAX_PORTS; i++) {               \
 353                         if ((bit_lookup)[i] == -1) continue;    \
 354                         if (val & (1<<(bit_lookup)[i]))         \
 355                                 (bits) |= (1<<i);               \
 356                 }                                               \
 357         } while (0)
 358
 359 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 360         do {                                                    \
 361                 int i, val = getPhy((state), (addr));           \
 362                 if (val < 0)                                    \
 363                         return val;                             \
 364                 for (i = 0; i < MAX_PORTS; i++) {               \
 365                         unsigned int newmask = ((bits)&(1<<i)); \
 366                         if ((bit_lookup)[i] == -1) continue;    \
 367                         val &= ~(1<<(bit_lookup)[i]);           \
 368                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 369                 }                                               \
 370                 val = setPhy((state), (addr), val);             \
 371                 if (val < 0)                                    \
 372                         return val;                             \
 373         } while (0)
 374
 375
 376 static int get_model(struct ip175c_state *state)
 377 {
 378         reg oui_id_reg = {0, 2};
 379         int oui_id;
 380         reg model_no_reg = {0, 3};
 381         int model_no, model_no_orig;
 382
 383         // 175 and 178 have the same oui ID.
 384         reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
 385         int is_178c = 0;
 386
 387         oui_id = getPhy(state, oui_id_reg);
 388         if (oui_id != 0x0243) {
 389                 // non
 390                 return -ENODEV; // Not a IC+ chip.
 391         }
 392         oui_id = getPhy(state, oui_id_reg_178c);
 393         if (oui_id == 0x0243) {
 394                 is_178c = 1;
 395         }
 396
 397         model_no_orig = getPhy(state, model_no_reg);
 398         if (model_no_orig < 0) {
 399                 return -ENODEV;
 400         }
 401         model_no = model_no_orig >> 4; // shift out revision number.
 402         model_no &= 0x3f; // only take the model number (low 6 bits).
 403         if (model_no == IP175A.MODEL_NO) {
 404                 state->regs = &IP175A;
 405         } else if (model_no == IP175C.MODEL_NO) {
 406                 if (is_178c) {
 407                         state->regs = &IP178C;
 408                 } else {
 409                         state->regs = &IP175C;
 410                 }
 411         } else {
 412                 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
 413                 return -EPERM;
 414         }
 415         return 0;
 416 }
 417
 418 /** Get only the vlan and router flags on the router **/
 419 static int ip175c_get_flags(struct ip175c_state *state)
 420 {
 421         int val;
 422
 423         state->router_mode = 0;
 424         state->vlan_enabled = -1; // hack
 425         state->num_vlans = 0;
 426
 427         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 428                 return 0; // not an error if it doesn't support enable vlan.
 429         }
 430
 431         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 432         if (val < 0) {
 433                 return val;
 434         }
 435         if (state->regs->ROUTER_EN_BIT >= 0)
 436                 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
 437
 438         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 439                 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
 440                 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
 441                 state->num_vlans+=1; // does not include WAN.
 442         }
 443
 444         val = getPhy(state, state->regs->VLAN_CONTROL_REG);
 445         if (val < 0) {
 446                 return 0;
 447         }
 448         if (state->regs->TAG_VLAN_BIT >= 0)
 449                 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
 450
 451         return  0;
 452 }
 453
 454 /** Get all state variables for VLAN mappings and port-based tagging **/
 455 static int ip175c_get_state(struct ip175c_state *state)
 456 {
 457         int i, j;
 458         int ret;
 459
 460         ret = ip175c_get_flags(state);
 461         if (ret < 0) {
 462                 return ret;
 463         }
 464
 465         GET_PORT_BITS(state, state->remove_tag,
 466                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 467         GET_PORT_BITS(state, state->add_tag,
 468                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 469
 470         if (state->vlan_enabled == -1) {
 471                 // not sure how to get this...
 472                 state->vlan_enabled = (state->remove_tag || state->add_tag);
 473         }
 474
 475         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 476                 for (j=0; j<MAX_PORTS; j++) {
 477                         state->ports[j].shareports = 0; // initialize them in case.
 478                 }
 479                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 480                         reg addr;
 481                         const bitnum *bit_lookup = (j%2==0)?
 482                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 483                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 484                         addr = state->regs->VLAN_LOOKUP_REG;
 485                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 486                                 addr.m += j;
 487                         } else {
 488                                 switch (j) {
 489                                 case 0:
 490                                 case 1:
 491                                         break;
 492                                 case 2:
 493                                 case 3:
 494                                         addr.m+=1;
 495                                         break;
 496                                 case 4:
 497                                         addr.m+=2;
 498                                         break;
 499                                 case 5:
 500                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 501                                         break;
 502                                 }
 503                         }
 504
 505                         if (REG_SUPP(addr)) {
 506                                 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 507                         }
 508                 }
 509         } else {
 510                 for (j=0; j<MAX_PORTS; j++) {
 511                         state->ports[j].shareports = 0xff;
 512                 }
 513         }
 514
 515         for (i=0; i<MAX_PORTS; i++) {
 516                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 517                         int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
 518                         if (val < 0) {
 519                                 return val;
 520                         }
 521                         state->ports[i].pvid = val;
 522                 } else {
 523                         state->ports[i].pvid = 0;
 524                 }
 525         }
 526
 527         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 528                 for (j=0; j<MAX_VLANS; j++) {
 529                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 530                         const bitnum *bit_lookup = (j%2==0)?
 531                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 532                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 533                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 534                                 addr.m += j;
 535                         } else {
 536                                 addr.m += j/2;
 537                         }
 538                         GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
 539                 }
 540         } else {
 541                 for (j=0; j<MAX_VLANS; j++) {
 542                         state->vlan_ports[j] = 0;
 543                         for (i=0; i<state->regs->NUM_PORTS; i++) {
 544                                 if ((state->ports[i].pvid == j) ||
 545                                                 (state->ports[i].pvid == 0)) {
 546                                         state->vlan_ports[j] |= (1<<i);
 547                                 }
 548                         }
 549                 }
 550         }
 551
 552         return 0;
 553 }
 554
 555 /** Only set vlan and router flags in the switch **/
 556 static int ip175c_set_flags(struct ip175c_state *state)
 557 {
 558         int val;
 559
 560         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 561                 return 0;
 562         }
 563
 564         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 565         if (val < 0) {
 566                 return val;
 567         }
 568         if (state->regs->ROUTER_EN_BIT >= 0) {
 569                 if (state->router_mode) {
 570                         val |= (1<<state->regs->ROUTER_EN_BIT);
 571                 } else {
 572                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 573                 }
 574         }
 575         if (state->regs->TAG_VLAN_BIT >= 0) {
 576                 if (state->vlan_enabled) {
 577                         val |= (1<<state->regs->TAG_VLAN_BIT);
 578                 } else {
 579                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 580                 }
 581         }
 582         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 583                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 584                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 585                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 586                 } else if (state->num_vlans >= 1) {
 587                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 588                 }
 589         }
 590         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 591 }
 592
 593 /** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 594 static int ip175c_set_state(struct ip175c_state *state)
 595 {
 596         int j;
 597         int i;
 598         SET_PORT_BITS(state, state->add_tag,
 599                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 600         SET_PORT_BITS(state, state->remove_tag,
 601                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 602
 603         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 604                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 605                         reg addr;
 606                         const bitnum *bit_lookup = (j%2==0)?
 607                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 608                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 609
 610                         // duplicate code -- sorry
 611                         addr = state->regs->VLAN_LOOKUP_REG;
 612                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 613                                 addr.m += j;
 614                         } else {
 615                                 switch (j) {
 616                                 case 0:
 617                                 case 1:
 618                                         break;
 619                                 case 2:
 620                                 case 3:
 621                                         addr.m+=1;
 622                                         break;
 623                                 case 4:
 624                                         addr.m+=2;
 625                                         break;
 626                                 case 5:
 627                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 628                                         break;
 629                                 default:
 630                                         addr.m = -1; // shouldn't get here, but...
 631                                         break;
 632                                 }
 633                         }
 634                         //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 635                         if (REG_SUPP(addr)) {
 636                                 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 637                         }
 638                 }
 639         }
 640         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 641                 for (j=0; j<MAX_VLANS; j++) {
 642                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 643                         const bitnum *bit_lookup = (j%2==0)?
 644                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 645                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 646                         unsigned int vlan_mask;
 647                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 648                                 addr.m += j;
 649                         } else {
 650                                 addr.m += j/2;
 651                         }
 652                         vlan_mask = state->vlan_ports[j];
 653                         SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 654                 }
 655         }
 656
 657         for (i=0; i<MAX_PORTS; i++) {
 658                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 659                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 660                                         state->ports[i].pvid);
 661                         if (err < 0) {
 662                                 return err;
 663                         }
 664                 }
 665         }
 666
 667         return ip175c_set_flags(state);
 668 }
 669
 670 /**
 671  *  Uses only the VLAN port mask and the add tag mask to generate the other fields:
 672  *  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 673  */
 674 static void ip175c_correct_vlan_state(struct ip175c_state *state)
 675 {
 676         int i, j;
 677         state->num_vlans = 0;
 678         for (i=0; i<MAX_VLANS; i++) {
 679                 if (state->vlan_ports[i] != 0) {
 680                         state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
 681                 }
 682         }
 683
 684         for (i=0; i<state->regs->NUM_PORTS; i++) {
 685                 unsigned int portmask = (1<<i);
 686                 if (!state->vlan_enabled) {
 687                         // Share with everybody!
 688                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 689                         continue;
 690                 }
 691                 state->ports[i].shareports = portmask;
 692                 for (j=0; j<MAX_VLANS; j++) {
 693                         if (state->vlan_ports[j] & portmask)
 694                                 state->ports[i].shareports |= state->vlan_ports[j];
 695                 }
 696         }
 697         state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
 698 }
 699
 700 static int ip175c_update_state(struct ip175c_state *state)
 701 {
 702         ip175c_correct_vlan_state(state);
 703         return ip175c_set_state(state);
 704 }
 705
 706 static int ip175c_set_vlan_mode(struct ip175c_state *state)
 707 {
 708         return ip175c_update_state(state);
 709 }
 710
 711 static int ip175c_do_reset(struct ip175c_state *state)
 712 {
 713         int err;
 714
 715         if (REG_SUPP(state->regs->MODE_REG)) {
 716                 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
 717                 if (err < 0)
 718                         return err;
 719                 err = getPhy(state, state->regs->MODE_REG);
 720                 if (err < 0)
 721                         return err;
 722         }
 723
 724         return 0;
 725 }
 726
 727 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 728 {
 729         struct ip175c_state *state = dev->priv;
 730         int err;
 731
 732         err = state->regs->get_state(state); // May be set in get_state.
 733         if (err < 0)
 734                 return err;
 735         val->value.i = state->vlan_enabled;
 736         return 0;
 737 }
 738
 739 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 740 {
 741         struct ip175c_state *state = dev->priv;
 742         int err;
 743         int enable;
 744         int i;
 745
 746         err = state->regs->get_state(state);
 747         if (err < 0)
 748                 return err;
 749         enable = val->value.i;
 750
 751         if (state->vlan_enabled == enable) {
 752                 // Do not change any state.
 753                 return 0;
 754         }
 755         state->vlan_enabled = enable;
 756
 757         // Otherwise, if we are switching state, set fields to a known default.
 758         state->remove_tag = 0x0000;
 759         state->add_tag = 0x0000;
 760         for (i = 0; i < MAX_VLANS; i++)
 761                 state->vlan_ports[i] = 0x0;
 762
 763         return state->regs->set_vlan_mode(state);
 764 }
 765
 766 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
 767 {
 768         struct ip175c_state *state = dev->priv;
 769         int err;
 770         int b;
 771         int ind;
 772         unsigned int ports;
 773
 774         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 775                 return -EINVAL;
 776
 777         err = state->regs->get_state(state);
 778         if (err<0)
 779                 return err;
 780
 781         ports = state->vlan_ports[val->port_vlan];
 782         b = 0;
 783         ind = 0;
 784         while (b < MAX_PORTS) {
 785                 if (ports&1) {
 786                         int istagged = ((state->add_tag >> b) & 1);
 787                         val->value.ports[ind].id = b;
 788                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 789                         ind++;
 790                 }
 791                 b++;
 792                 ports >>= 1;
 793         }
 794         val->len = ind;
 795
 796         return 0;
 797 }
 798
 799 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
 800 {
 801         struct ip175c_state *state = dev->priv;
 802         int i;
 803         int err;
 804
 805         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 806                 return -EINVAL;
 807
 808         err = state->regs->get_state(state);
 809         if (err < 0)
 810                 return err;
 811
 812         state->vlan_ports[val->port_vlan] = 0;
 813         for (i = 0; i < val->len; i++) {
 814                 int bitmask = (1<<val->value.ports[i].id);
 815                 state->vlan_ports[val->port_vlan] |= bitmask;
 816                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 817                         state->add_tag |= bitmask;
 818                 } else {
 819                         state->add_tag &= (~bitmask);
 820                 }
 821         }
 822
 823         return state->regs->update_state(state);
 824 }
 825
 826 static int ip175c_apply(struct switch_dev *dev)
 827 {
 828         struct ip175c_state *state = dev->priv;
 829         int err;
 830
 831         err = state->regs->get_flags(state);
 832         if (err < 0)
 833                 return err;
 834
 835         if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
 836                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 837                 if (val < 0) {
 838                         return val;
 839                 }
 840                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 841                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 842         }
 843         return 0;
 844 }
 845
 846 static int ip175c_reset(struct switch_dev *dev)
 847 {
 848         struct ip175c_state *state = dev->priv;
 849         int i, err;
 850
 851         err = state->regs->get_flags(state);
 852         if (err < 0)
 853                 return err;
 854
 855         if (REG_SUPP(state->regs->RESET_REG)) {
 856                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 857                 if (err < 0)
 858                         return err;
 859                 err = getPhy(state, state->regs->RESET_REG);
 860
 861                 /*
 862                  *  Data sheet specifies reset period to be 2 msec.
 863                  *  (I don't see any mention of the 2ms delay in the IP178C spec, only
 864                  *  in IP175C, but it can't hurt.)
 865                  */
 866                 mdelay(2);
 867         }
 868
 869         /* reset switch ports */
 870         for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
 871                 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
 872                 if (err < 0)
 873                         return err;
 874         }
 875
 876         return state->regs->reset(state);
 877 }
 878
 879 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 880 {
 881         struct ip175c_state *state = dev->priv;
 882         int err;
 883
 884         err = state->regs->get_state(state);
 885         if (err < 0)
 886                 return err;
 887
 888         if (state->add_tag & (1<<val->port_vlan)) {
 889                 if (state->remove_tag & (1<<val->port_vlan))
 890                         val->value.i = 3; // shouldn't ever happen.
 891                 else
 892                         val->value.i = 1;
 893         } else {
 894                 if (state->remove_tag & (1<<val->port_vlan))
 895                         val->value.i = 0;
 896                 else
 897                         val->value.i = 2;
 898         }
 899         return 0;
 900 }
 901
 902 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 903 {
 904         struct ip175c_state *state = dev->priv;
 905         int err;
 906
 907         err = state->regs->get_state(state);
 908         if (err < 0)
 909                 return err;
 910
 911         state->add_tag &= ~(1<<val->port_vlan);
 912         state->remove_tag &= ~(1<<val->port_vlan);
 913
 914         if (val->value.i == 0)
 915                 state->remove_tag |= (1<<val->port_vlan);
 916         if (val->value.i == 1)
 917                 state->add_tag |= (1<<val->port_vlan);
 918
 919         return state->regs->update_state(state);
 920 }
 921
 922 /** Get the current phy address */
 923 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 924 {
 925         struct ip175c_state *state = dev->priv;
 926
 927         val->value.i = state->proc_mii.p;
 928         return 0;
 929 }
 930
 931 /** Set a new phy address for low level access to registers */
 932 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 933 {
 934         struct ip175c_state *state = dev->priv;
 935         int new_reg = val->value.i;
 936
 937         if (new_reg < 0 || new_reg > 31)
 938                 state->proc_mii.p = (u16)-1;
 939         else
 940                 state->proc_mii.p = (u16)new_reg;
 941         return 0;
 942 }
 943
 944 /** Get the current register number */
 945 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 946 {
 947         struct ip175c_state *state = dev->priv;
 948
 949         val->value.i = state->proc_mii.m;
 950         return 0;
 951 }
 952
 953 /** Set a new register address for low level access to registers */
 954 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 955 {
 956         struct ip175c_state *state = dev->priv;
 957         int new_reg = val->value.i;
 958
 959         if (new_reg < 0 || new_reg > 31)
 960                 state->proc_mii.m = (u16)-1;
 961         else
 962                 state->proc_mii.m = (u16)new_reg;
 963         return 0;
 964 }
 965
 966 /** Get the register content of state->proc_mii */
 967 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 968 {
 969         struct ip175c_state *state = dev->priv;
 970         int retval = -EINVAL;
 971         if (REG_SUPP(state->proc_mii))
 972                 retval = getPhy(state, state->proc_mii);
 973
 974         if (retval < 0) {
 975                 return retval;
 976         } else {
 977                 val->value.i = retval;
 978                 return 0;
 979         }
 980 }
 981
 982 /** Write a value to the register defined by phy/reg above */
 983 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 984 {
 985         struct ip175c_state *state = dev->priv;
 986         int myval, err = -EINVAL;
 987
 988         myval = val->value.i;
 989         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
 990                 err = setPhy(state, state->proc_mii, (u16)myval);
 991         }
 992         return err;
 993 }
 994
 995 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 996 {
 997         struct ip175c_state *state = dev->priv;
 998         val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
 999         return 0;
1000 }
1001
1002 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1003 {
1004         struct ip175c_state *state = dev->priv;
1005         int nr = val->port_vlan;
1006         int ctrl;
1007         int autoneg;
1008         int speed;
1009         if (val->value.i == 100) {
1010                 speed = 1;
1011                 autoneg = 0;
1012         } else if (val->value.i == 10) {
1013                 speed = 0;
1014                 autoneg = 0;
1015         } else {
1016                 autoneg = 1;
1017                 speed = 1;
1018         }
1019
1020         /* Can't set speed for cpu port */
1021         if (nr == state->regs->CPU_PORT)
1022                 return -EINVAL;
1023
1024         if (nr >= dev->ports || nr < 0)
1025                 return -EINVAL;
1026
1027         ctrl = ip_phy_read(state, nr, 0);
1028         if (ctrl < 0)
1029                 return -EIO;
1030
1031         ctrl &= (~(1<<12));
1032         ctrl &= (~(1<<13));
1033         ctrl |= (autoneg<<12);
1034         ctrl |= (speed<<13);
1035
1036         return ip_phy_write(state, nr, 0, ctrl);
1037 }
1038
1039 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1040 {
1041         struct ip175c_state *state = dev->priv;
1042         int nr = val->port_vlan;
1043         int speed, status;
1044
1045         if (nr == state->regs->CPU_PORT) {
1046                 val->value.i = 100;
1047                 return 0;
1048         }
1049
1050         if (nr >= dev->ports || nr < 0)
1051                 return -EINVAL;
1052
1053         status = ip_phy_read(state, nr, 1);
1054         speed = ip_phy_read(state, nr, 18);
1055         if (status < 0 || speed < 0)
1056                 return -EIO;
1057
1058         if (status & 4)
1059                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1060         else
1061                 val->value.i = 0;
1062
1063         return 0;
1064 }
1065
1066 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1067 {
1068         struct ip175c_state *state = dev->priv;
1069         int ctrl, speed, status;
1070         int nr = val->port_vlan;
1071         int len;
1072         char *buf = state->buf; // fixed-length at 80.
1073
1074         if (nr == state->regs->CPU_PORT) {
1075                 sprintf(buf, "up, 100 Mbps, cpu port");
1076                 val->value.s = buf;
1077                 return 0;
1078         }
1079
1080         if (nr >= dev->ports || nr < 0)
1081                 return -EINVAL;
1082
1083         ctrl = ip_phy_read(state, nr, 0);
1084         status = ip_phy_read(state, nr, 1);
1085         speed = ip_phy_read(state, nr, 18);
1086         if (ctrl < 0 || status < 0 || speed < 0)
1087                 return -EIO;
1088
1089         if (status & 4)
1090                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1091                         ((speed & (1<<11)) ? 100 : 10),
1092                         ((speed & (1<<10)) ? "full" : "half"));
1093         else
1094                 len = sprintf(buf, "down");
1095
1096         if (ctrl & (1<<12)) {
1097                 len += sprintf(buf+len, ", auto-negotiate");
1098                 if (!(status & (1<<5)))
1099                         len += sprintf(buf+len, " (in progress)");
1100         } else {
1101                 len += sprintf(buf+len, ", fixed speed (%d)",
1102                         ((ctrl & (1<<13)) ? 100 : 10));
1103         }
1104
1105         buf[len] = '\0';
1106         val->value.s = buf;
1107         return 0;
1108 }
1109
1110 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1111 {
1112         struct ip175c_state *state = dev->priv;
1113
1114         *val = state->ports[port].pvid;
1115         return 0;
1116 }
1117
1118 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1119 {
1120         struct ip175c_state *state = dev->priv;
1121         int err;
1122
1123         if (val < 0 || val >= MAX_VLANS)
1124                 return -EINVAL;
1125
1126         err = state->regs->get_state(state);
1127         if (err < 0)
1128                 return err;
1129
1130         state->ports[port].pvid = val;
1131
1132         return state->regs->update_state(state);
1133 }
1134
1135
1136 enum Ports {
1137         IP175C_PORT_STATUS,
1138         IP175C_PORT_LINK,
1139         IP175C_PORT_TAGGED,
1140         IP175C_PORT_PVID,
1141 };
1142
1143 enum Globals {
1144         IP175C_ENABLE_VLAN,
1145         IP175C_GET_NAME,
1146         IP175C_REGISTER_PHY,
1147         IP175C_REGISTER_MII,
1148         IP175C_REGISTER_VALUE,
1149         IP175C_REGISTER_ERRNO,
1150 };
1151
1152 static const struct switch_attr ip175c_global[] = {
1153         [IP175C_ENABLE_VLAN] = {
1154                 .id = IP175C_ENABLE_VLAN,
1155                 .type = SWITCH_TYPE_INT,
1156                 .name  = "enable_vlan",
1157                 .description = "Flag to enable or disable VLANs and tagging",
1158                 .get  = ip175c_get_enable_vlan,
1159                 .set = ip175c_set_enable_vlan,
1160         },
1161         [IP175C_GET_NAME] = {
1162                 .id = IP175C_GET_NAME,
1163                 .type = SWITCH_TYPE_STRING,
1164                 .description = "Returns the type of IC+ chip.",
1165                 .name  = "name",
1166                 .get  = ip175c_read_name,
1167                 .set = NULL,
1168         },
1169         /* jal: added for low level debugging etc. */
1170         [IP175C_REGISTER_PHY] = {
1171                 .id = IP175C_REGISTER_PHY,
1172                 .type = SWITCH_TYPE_INT,
1173                 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1174                 .name  = "phy",
1175                 .get  = ip175c_get_phy,
1176                 .set = ip175c_set_phy,
1177         },
1178         [IP175C_REGISTER_MII] = {
1179                 .id = IP175C_REGISTER_MII,
1180                 .type = SWITCH_TYPE_INT,
1181                 .description = "Direct register access: set MII register number (0-31)",
1182                 .name  = "reg",
1183                 .get  = ip175c_get_reg,
1184                 .set = ip175c_set_reg,
1185         },
1186         [IP175C_REGISTER_VALUE] = {
1187                 .id = IP175C_REGISTER_VALUE,
1188                 .type = SWITCH_TYPE_INT,
1189                 .description = "Direct register access: read/write to register (0-65535)",
1190                 .name  = "val",
1191                 .get  = ip175c_get_val,
1192                 .set = ip175c_set_val,
1193         },
1194 };
1195
1196 static const struct switch_attr ip175c_vlan[] = {
1197 };
1198
1199 static const struct switch_attr ip175c_port[] = {
1200         [IP175C_PORT_STATUS] = {
1201                 .id = IP175C_PORT_STATUS,
1202                 .type = SWITCH_TYPE_STRING,
1203                 .description = "Returns Detailed port status",
1204                 .name  = "status",
1205                 .get  = ip175c_get_port_status,
1206                 .set = NULL,
1207         },
1208         [IP175C_PORT_LINK] = {
1209                 .id = IP175C_PORT_LINK,
1210                 .type = SWITCH_TYPE_INT,
1211                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1212                 .name  = "link",
1213                 .get  = ip175c_get_port_speed,
1214                 .set = ip175c_set_port_speed,
1215         },
1216         [IP175C_PORT_TAGGED] = {
1217                 .id = IP175C_PORT_LINK,
1218                 .type = SWITCH_TYPE_INT,
1219                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1220                 .name  = "tagged",
1221                 .get  = ip175c_get_tagged,
1222                 .set = ip175c_set_tagged,
1223         },
1224 };
1225
1226 static int ip175c_probe(struct phy_device *pdev)
1227 {
1228         struct ip175c_state *state;
1229         struct switch_dev *dev;
1230         int err;
1231
1232         /* We only attach to PHY 0, but use all available PHYs */
1233         if (pdev->addr != 0)
1234                 return -ENODEV;
1235
1236         state = kzalloc(sizeof(*state), GFP_KERNEL);
1237         if (!state)
1238                 return -ENOMEM;
1239
1240         dev = &state->dev;
1241         dev->attr_global.attr = ip175c_global;
1242         dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1243         dev->attr_port.attr = ip175c_port;
1244         dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1245         dev->attr_vlan.attr = ip175c_vlan;
1246         dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1247
1248         dev->get_port_pvid = ip175c_get_pvid;
1249         dev->set_port_pvid = ip175c_set_pvid;
1250         dev->get_vlan_ports = ip175c_get_ports;
1251         dev->set_vlan_ports = ip175c_set_ports;
1252         dev->apply_config = ip175c_apply;
1253         dev->reset_switch = ip175c_reset;
1254
1255         dev->priv = state;
1256         pdev->priv = state;
1257         state->mii_bus = pdev->bus;
1258
1259         err = get_model(state);
1260         if (err < 0)
1261                 goto error;
1262
1263         dev->vlans = MAX_VLANS;
1264         dev->cpu_port = state->regs->CPU_PORT;
1265         dev->ports = state->regs->NUM_PORTS;
1266         dev->name = state->regs->NAME;
1267
1268         return 0;
1269
1270 error:
1271         kfree(state);
1272         return err;
1273 }
1274
1275 static int ip175c_config_init(struct phy_device *pdev)
1276 {
1277         struct ip175c_state *state = pdev->priv;
1278         struct net_device *dev = pdev->attached_dev;
1279         int err;
1280
1281         pdev->irq = PHY_IGNORE_INTERRUPT;
1282         err = register_switch(&state->dev, dev);
1283         if (err < 0)
1284                 return err;
1285
1286         ip175c_reset(&state->dev);
1287
1288         state->registered = true;
1289         netif_carrier_on(pdev->attached_dev);
1290
1291         return 0;
1292 }
1293
1294 static void ip175c_remove(struct phy_device *pdev)
1295 {
1296         struct ip175c_state *state = pdev->priv;
1297
1298         if (state->registered)
1299                 unregister_switch(&state->dev);
1300         kfree(state);
1301 }
1302
1303 static int ip175c_config_aneg(struct phy_device *pdev)
1304 {
1305         return 0;
1306 }
1307
1308 static int ip175c_read_status(struct phy_device *pdev)
1309 {
1310         pdev->speed = SPEED_100;
1311         pdev->duplex = DUPLEX_FULL;
1312         pdev->pause = pdev->asym_pause = 0;
1313         return 0;
1314 }
1315
1316 static struct phy_driver ip175c_driver = {
1317         .name           = "IC+ IP175C",
1318         .phy_id         = 0x02430d80,
1319         .phy_id_mask    = 0x0ffffff0,
1320         .features       = PHY_BASIC_FEATURES,
1321         .probe          = ip175c_probe,
1322         .remove         = ip175c_remove,
1323         .config_init    = ip175c_config_init,
1324         .config_aneg    = ip175c_config_aneg,
1325         .read_status    = ip175c_read_status,
1326         .driver         = { .owner = THIS_MODULE },
1327 };
1328
1329 static struct phy_driver ip175a_driver = {
1330         .name           = "IC+ IP175A",
1331         .phy_id         = 0x02430c50,
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
1343 int __init ip175c_init(void)
1344 {
1345         int ret;
1346
1347         ret = phy_driver_register(&ip175a_driver);
1348         if (ret < 0)
1349                 return ret;
1350
1351         return phy_driver_register(&ip175c_driver);
1352 }
1353
1354 void __exit ip175c_exit(void)
1355 {
1356         phy_driver_unregister(&ip175c_driver);
1357         phy_driver_unregister(&ip175a_driver);
1358 }
1359
1360 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1361 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1362 MODULE_LICENSE("GPL");
1363
1364 module_init(ip175c_init);
1365 module_exit(ip175c_exit);