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                 unsigned int tag;       // VLAN tag (IP175D only)
 282         } vlans[MAX_VLANS];
 283         const struct register_mappings *regs;
 284         reg proc_mii;   // phy/reg for the low level register access via swconfig
 285
 286         char buf[80];
 287 };
 288
 289
 290 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
 291 {
 292         int val = mdiobus_read(state->mii_bus, port, reg);
 293         if (val < 0)
 294                 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
 295 #ifdef DUMP_MII_IO
 296         else
 297                 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
 298 #endif
 299         return val;
 300 }
 301
 302 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
 303 {
 304         int err;
 305
 306 #ifdef DUMP_MII_IO
 307         pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
 308 #endif
 309         err = mdiobus_write(state->mii_bus, port, reg, val);
 310         if (err < 0)
 311                 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
 312         return err;
 313 }
 314
 315 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
 316 {
 317         int val = ip_phy_read(state, port, reg);
 318         if (val < 0)
 319                 return 0;
 320         return ip_phy_write(state, port, reg, (val & ~mask) | data);
 321 }
 322
 323 static int getPhy(struct ip175c_state *state, reg mii)
 324 {
 325         if (!REG_SUPP(mii))
 326                 return -EFAULT;
 327         return ip_phy_read(state, mii.p, mii.m);
 328 }
 329
 330 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
 331 {
 332         int err;
 333
 334         if (!REG_SUPP(mii))
 335                 return -EFAULT;
 336         err = ip_phy_write(state, mii.p, mii.m, value);
 337         if (err < 0)
 338                 return err;
 339         getPhy(state, mii);
 340         return 0;
 341 }
 342
 343
 344 /**
 345  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 346  * NOTE: these macros will return if there is an error!
 347  */
 348
 349 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 350         do {                                                    \
 351                 int i, val = getPhy((state), (addr));           \
 352                 if (val < 0)                                    \
 353                         return val;                             \
 354                 (bits) = 0;                                     \
 355                 for (i = 0; i < MAX_PORTS; i++) {               \
 356                         if ((bit_lookup)[i] == -1) continue;    \
 357                         if (val & (1<<(bit_lookup)[i]))         \
 358                                 (bits) |= (1<<i);               \
 359                 }                                               \
 360         } while (0)
 361
 362 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 363         do {                                                    \
 364                 int i, val = getPhy((state), (addr));           \
 365                 if (val < 0)                                    \
 366                         return val;                             \
 367                 for (i = 0; i < MAX_PORTS; i++) {               \
 368                         unsigned int newmask = ((bits)&(1<<i)); \
 369                         if ((bit_lookup)[i] == -1) continue;    \
 370                         val &= ~(1<<(bit_lookup)[i]);           \
 371                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 372                 }                                               \
 373                 val = setPhy((state), (addr), val);             \
 374                 if (val < 0)                                    \
 375                         return val;                             \
 376         } while (0)
 377
 378
 379 static int get_model(struct ip175c_state *state)
 380 {
 381         reg oui_id_reg = {0, 2};
 382         int oui_id;
 383         reg model_no_reg = {0, 3};
 384         int model_no, model_no_orig;
 385
 386         // 175 and 178 have the same oui ID.
 387         reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
 388         int is_178c = 0;
 389
 390         oui_id = getPhy(state, oui_id_reg);
 391         if (oui_id != 0x0243) {
 392                 // non
 393                 return -ENODEV; // Not a IC+ chip.
 394         }
 395         oui_id = getPhy(state, oui_id_reg_178c);
 396         if (oui_id == 0x0243) {
 397                 is_178c = 1;
 398         }
 399
 400         model_no_orig = getPhy(state, model_no_reg);
 401         if (model_no_orig < 0) {
 402                 return -ENODEV;
 403         }
 404         model_no = model_no_orig >> 4; // shift out revision number.
 405         model_no &= 0x3f; // only take the model number (low 6 bits).
 406         if (model_no == IP175A.MODEL_NO) {
 407                 state->regs = &IP175A;
 408         } else if (model_no == IP175C.MODEL_NO) {
 409                 if (is_178c) {
 410                         state->regs = &IP178C;
 411                 } else {
 412                         state->regs = &IP175C;
 413                 }
 414         } else {
 415                 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
 416                 return -EPERM;
 417         }
 418         return 0;
 419 }
 420
 421 /** Get only the vlan and router flags on the router **/
 422 static int ip175c_get_flags(struct ip175c_state *state)
 423 {
 424         int val;
 425
 426         state->router_mode = 0;
 427         state->vlan_enabled = -1; // hack
 428         state->num_vlans = 0;
 429
 430         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 431                 return 0; // not an error if it doesn't support enable vlan.
 432         }
 433
 434         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 435         if (val < 0) {
 436                 return val;
 437         }
 438         if (state->regs->ROUTER_EN_BIT >= 0)
 439                 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
 440
 441         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 442                 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
 443                 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
 444                 state->num_vlans+=1; // does not include WAN.
 445         }
 446
 447         val = getPhy(state, state->regs->VLAN_CONTROL_REG);
 448         if (val < 0) {
 449                 return 0;
 450         }
 451         if (state->regs->TAG_VLAN_BIT >= 0)
 452                 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
 453
 454         return  0;
 455 }
 456
 457 /** Get all state variables for VLAN mappings and port-based tagging **/
 458 static int ip175c_get_state(struct ip175c_state *state)
 459 {
 460         int i, j;
 461         int ret;
 462
 463         ret = ip175c_get_flags(state);
 464         if (ret < 0) {
 465                 return ret;
 466         }
 467
 468         GET_PORT_BITS(state, state->remove_tag,
 469                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 470         GET_PORT_BITS(state, state->add_tag,
 471                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 472
 473         if (state->vlan_enabled == -1) {
 474                 // not sure how to get this...
 475                 state->vlan_enabled = (state->remove_tag || state->add_tag);
 476         }
 477
 478         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 479                 for (j=0; j<MAX_PORTS; j++) {
 480                         state->ports[j].shareports = 0; // initialize them in case.
 481                 }
 482                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 483                         reg addr;
 484                         const bitnum *bit_lookup = (j%2==0)?
 485                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 486                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 487                         addr = state->regs->VLAN_LOOKUP_REG;
 488                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 489                                 addr.m += j;
 490                         } else {
 491                                 switch (j) {
 492                                 case 0:
 493                                 case 1:
 494                                         break;
 495                                 case 2:
 496                                 case 3:
 497                                         addr.m+=1;
 498                                         break;
 499                                 case 4:
 500                                         addr.m+=2;
 501                                         break;
 502                                 case 5:
 503                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 504                                         break;
 505                                 }
 506                         }
 507
 508                         if (REG_SUPP(addr)) {
 509                                 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 510                         }
 511                 }
 512         } else {
 513                 for (j=0; j<MAX_PORTS; j++) {
 514                         state->ports[j].shareports = 0xff;
 515                 }
 516         }
 517
 518         for (i=0; i<MAX_PORTS; i++) {
 519                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 520                         int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
 521                         if (val < 0) {
 522                                 return val;
 523                         }
 524                         state->ports[i].pvid = val;
 525                 } else {
 526                         state->ports[i].pvid = 0;
 527                 }
 528         }
 529
 530         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 531                 for (j=0; j<MAX_VLANS; j++) {
 532                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 533                         const bitnum *bit_lookup = (j%2==0)?
 534                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 535                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 536                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 537                                 addr.m += j;
 538                         } else {
 539                                 addr.m += j/2;
 540                         }
 541                         GET_PORT_BITS(state, state->vlans[j].ports, addr, bit_lookup);
 542                 }
 543         } else {
 544                 for (j=0; j<MAX_VLANS; j++) {
 545                         state->vlans[j].ports = 0;
 546                         for (i=0; i<state->regs->NUM_PORTS; i++) {
 547                                 if ((state->ports[i].pvid == j) ||
 548                                                 (state->ports[i].pvid == 0)) {
 549                                         state->vlans[j].ports |= (1<<i);
 550                                 }
 551                         }
 552                 }
 553         }
 554
 555         return 0;
 556 }
 557
 558 /** Only set vlan and router flags in the switch **/
 559 static int ip175c_set_flags(struct ip175c_state *state)
 560 {
 561         int val;
 562
 563         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 564                 return 0;
 565         }
 566
 567         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 568         if (val < 0) {
 569                 return val;
 570         }
 571         if (state->regs->ROUTER_EN_BIT >= 0) {
 572                 if (state->router_mode) {
 573                         val |= (1<<state->regs->ROUTER_EN_BIT);
 574                 } else {
 575                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 576                 }
 577         }
 578         if (state->regs->TAG_VLAN_BIT >= 0) {
 579                 if (state->vlan_enabled) {
 580                         val |= (1<<state->regs->TAG_VLAN_BIT);
 581                 } else {
 582                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 583                 }
 584         }
 585         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 586                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 587                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 588                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 589                 } else if (state->num_vlans >= 1) {
 590                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 591                 }
 592         }
 593         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 594 }
 595
 596 /** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 597 static int ip175c_set_state(struct ip175c_state *state)
 598 {
 599         int j;
 600         int i;
 601         SET_PORT_BITS(state, state->add_tag,
 602                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 603         SET_PORT_BITS(state, state->remove_tag,
 604                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 605
 606         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 607                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 608                         reg addr;
 609                         const bitnum *bit_lookup = (j%2==0)?
 610                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 611                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 612
 613                         // duplicate code -- sorry
 614                         addr = state->regs->VLAN_LOOKUP_REG;
 615                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 616                                 addr.m += j;
 617                         } else {
 618                                 switch (j) {
 619                                 case 0:
 620                                 case 1:
 621                                         break;
 622                                 case 2:
 623                                 case 3:
 624                                         addr.m+=1;
 625                                         break;
 626                                 case 4:
 627                                         addr.m+=2;
 628                                         break;
 629                                 case 5:
 630                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 631                                         break;
 632                                 default:
 633                                         addr.m = -1; // shouldn't get here, but...
 634                                         break;
 635                                 }
 636                         }
 637                         //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 638                         if (REG_SUPP(addr)) {
 639                                 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 640                         }
 641                 }
 642         }
 643         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 644                 for (j=0; j<MAX_VLANS; j++) {
 645                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 646                         const bitnum *bit_lookup = (j%2==0)?
 647                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 648                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 649                         unsigned int vlan_mask;
 650                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 651                                 addr.m += j;
 652                         } else {
 653                                 addr.m += j/2;
 654                         }
 655                         vlan_mask = state->vlans[j].ports;
 656                         SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 657                 }
 658         }
 659
 660         for (i=0; i<MAX_PORTS; i++) {
 661                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 662                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 663                                         state->ports[i].pvid);
 664                         if (err < 0) {
 665                                 return err;
 666                         }
 667                 }
 668         }
 669
 670         return ip175c_set_flags(state);
 671 }
 672
 673 /**
 674  *  Uses only the VLAN port mask and the add tag mask to generate the other fields:
 675  *  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 676  */
 677 static void ip175c_correct_vlan_state(struct ip175c_state *state)
 678 {
 679         int i, j;
 680         state->num_vlans = 0;
 681         for (i=0; i<MAX_VLANS; i++) {
 682                 if (state->vlans[i].ports != 0) {
 683                         state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
 684                 }
 685         }
 686
 687         for (i=0; i<state->regs->NUM_PORTS; i++) {
 688                 unsigned int portmask = (1<<i);
 689                 if (!state->vlan_enabled) {
 690                         // Share with everybody!
 691                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 692                         continue;
 693                 }
 694                 state->ports[i].shareports = portmask;
 695                 for (j=0; j<MAX_VLANS; j++) {
 696                         if (state->vlans[j].ports & portmask)
 697                                 state->ports[i].shareports |= state->vlans[j].ports;
 698                 }
 699         }
 700 }
 701
 702 static int ip175c_update_state(struct ip175c_state *state)
 703 {
 704         ip175c_correct_vlan_state(state);
 705         return ip175c_set_state(state);
 706 }
 707
 708 static int ip175c_set_vlan_mode(struct ip175c_state *state)
 709 {
 710         return ip175c_update_state(state);
 711 }
 712
 713 static int ip175c_do_reset(struct ip175c_state *state)
 714 {
 715         int err;
 716
 717         if (REG_SUPP(state->regs->MODE_REG)) {
 718                 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
 719                 if (err < 0)
 720                         return err;
 721                 err = getPhy(state, state->regs->MODE_REG);
 722                 if (err < 0)
 723                         return err;
 724         }
 725
 726         return 0;
 727 }
 728
 729 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 730 {
 731         struct ip175c_state *state = dev->priv;
 732         int err;
 733
 734         err = state->regs->get_state(state); // May be set in get_state.
 735         if (err < 0)
 736                 return err;
 737         val->value.i = state->vlan_enabled;
 738         return 0;
 739 }
 740
 741 static void ip175c_reset_vlan_config(struct ip175c_state *state)
 742 {
 743         int i;
 744
 745         state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
 746         state->add_tag = 0x0000;
 747         for (i = 0; i < MAX_VLANS; i++) {
 748                 state->vlans[i].ports = 0x0000;
 749                 state->vlans[i].tag = (i ? i : 16);
 750         }
 751         for (i = 0; i < MAX_PORTS; i++)
 752                 state->ports[i].pvid = 0;
 753 }
 754
 755 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 756 {
 757         struct ip175c_state *state = dev->priv;
 758         int err;
 759         int enable;
 760
 761         err = state->regs->get_state(state);
 762         if (err < 0)
 763                 return err;
 764         enable = val->value.i;
 765
 766         if (state->vlan_enabled == enable) {
 767                 // Do not change any state.
 768                 return 0;
 769         }
 770         state->vlan_enabled = enable;
 771
 772         // Otherwise, if we are switching state, set fields to a known default.
 773         ip175c_reset_vlan_config(state);
 774
 775         return state->regs->set_vlan_mode(state);
 776 }
 777
 778 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
 779 {
 780         struct ip175c_state *state = dev->priv;
 781         int err;
 782         int b;
 783         int ind;
 784         unsigned int ports;
 785
 786         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 787                 return -EINVAL;
 788
 789         err = state->regs->get_state(state);
 790         if (err<0)
 791                 return err;
 792
 793         ports = state->vlans[val->port_vlan].ports;
 794         b = 0;
 795         ind = 0;
 796         while (b < MAX_PORTS) {
 797                 if (ports&1) {
 798                         int istagged = ((state->add_tag >> b) & 1);
 799                         val->value.ports[ind].id = b;
 800                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 801                         ind++;
 802                 }
 803                 b++;
 804                 ports >>= 1;
 805         }
 806         val->len = ind;
 807
 808         return 0;
 809 }
 810
 811 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
 812 {
 813         struct ip175c_state *state = dev->priv;
 814         int i;
 815         int err;
 816
 817         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 818                 return -EINVAL;
 819
 820         err = state->regs->get_state(state);
 821         if (err < 0)
 822                 return err;
 823
 824         state->vlans[val->port_vlan].ports = 0;
 825         for (i = 0; i < val->len; i++) {
 826                 unsigned int bitmask = (1<<val->value.ports[i].id);
 827                 state->vlans[val->port_vlan].ports |= bitmask;
 828                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 829                         state->add_tag |= bitmask;
 830                         state->remove_tag &= (~bitmask);
 831                 } else {
 832                         state->add_tag &= (~bitmask);
 833                         state->remove_tag |= bitmask;
 834                 }
 835         }
 836
 837         return state->regs->update_state(state);
 838 }
 839
 840 static int ip175c_apply(struct switch_dev *dev)
 841 {
 842         struct ip175c_state *state = dev->priv;
 843         int err;
 844
 845         err = state->regs->get_flags(state);
 846         if (err < 0)
 847                 return err;
 848
 849         if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
 850                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 851                 if (val < 0) {
 852                         return val;
 853                 }
 854                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 855                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 856         }
 857         return 0;
 858 }
 859
 860 static int ip175c_reset(struct switch_dev *dev)
 861 {
 862         struct ip175c_state *state = dev->priv;
 863         int i, err;
 864
 865         err = state->regs->get_flags(state);
 866         if (err < 0)
 867                 return err;
 868
 869         if (REG_SUPP(state->regs->RESET_REG)) {
 870                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 871                 if (err < 0)
 872                         return err;
 873                 err = getPhy(state, state->regs->RESET_REG);
 874
 875                 /*
 876                  *  Data sheet specifies reset period to be 2 msec.
 877                  *  (I don't see any mention of the 2ms delay in the IP178C spec, only
 878                  *  in IP175C, but it can't hurt.)
 879                  */
 880                 mdelay(2);
 881         }
 882
 883         /* reset switch ports */
 884         for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
 885                 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
 886                 if (err < 0)
 887                         return err;
 888         }
 889
 890         ip175c_reset_vlan_config(state);
 891
 892         return state->regs->reset(state);
 893 }
 894
 895 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 896 {
 897         struct ip175c_state *state = dev->priv;
 898         int err;
 899
 900         err = state->regs->get_state(state);
 901         if (err < 0)
 902                 return err;
 903
 904         if (state->add_tag & (1<<val->port_vlan)) {
 905                 if (state->remove_tag & (1<<val->port_vlan))
 906                         val->value.i = 3; // shouldn't ever happen.
 907                 else
 908                         val->value.i = 1;
 909         } else {
 910                 if (state->remove_tag & (1<<val->port_vlan))
 911                         val->value.i = 0;
 912                 else
 913                         val->value.i = 2;
 914         }
 915         return 0;
 916 }
 917
 918 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 919 {
 920         struct ip175c_state *state = dev->priv;
 921         int err;
 922
 923         err = state->regs->get_state(state);
 924         if (err < 0)
 925                 return err;
 926
 927         state->add_tag &= ~(1<<val->port_vlan);
 928         state->remove_tag &= ~(1<<val->port_vlan);
 929
 930         if (val->value.i == 0)
 931                 state->remove_tag |= (1<<val->port_vlan);
 932         if (val->value.i == 1)
 933                 state->add_tag |= (1<<val->port_vlan);
 934
 935         return state->regs->update_state(state);
 936 }
 937
 938 /** Get the current phy address */
 939 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 940 {
 941         struct ip175c_state *state = dev->priv;
 942
 943         val->value.i = state->proc_mii.p;
 944         return 0;
 945 }
 946
 947 /** Set a new phy address for low level access to registers */
 948 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 949 {
 950         struct ip175c_state *state = dev->priv;
 951         int new_reg = val->value.i;
 952
 953         if (new_reg < 0 || new_reg > 31)
 954                 state->proc_mii.p = (u16)-1;
 955         else
 956                 state->proc_mii.p = (u16)new_reg;
 957         return 0;
 958 }
 959
 960 /** Get the current register number */
 961 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 962 {
 963         struct ip175c_state *state = dev->priv;
 964
 965         val->value.i = state->proc_mii.m;
 966         return 0;
 967 }
 968
 969 /** Set a new register address for low level access to registers */
 970 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 971 {
 972         struct ip175c_state *state = dev->priv;
 973         int new_reg = val->value.i;
 974
 975         if (new_reg < 0 || new_reg > 31)
 976                 state->proc_mii.m = (u16)-1;
 977         else
 978                 state->proc_mii.m = (u16)new_reg;
 979         return 0;
 980 }
 981
 982 /** Get the register content of state->proc_mii */
 983 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 984 {
 985         struct ip175c_state *state = dev->priv;
 986         int retval = -EINVAL;
 987         if (REG_SUPP(state->proc_mii))
 988                 retval = getPhy(state, state->proc_mii);
 989
 990         if (retval < 0) {
 991                 return retval;
 992         } else {
 993                 val->value.i = retval;
 994                 return 0;
 995         }
 996 }
 997
 998 /** Write a value to the register defined by phy/reg above */
 999 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1000 {
1001         struct ip175c_state *state = dev->priv;
1002         int myval, err = -EINVAL;
1003
1004         myval = val->value.i;
1005         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
1006                 err = setPhy(state, state->proc_mii, (u16)myval);
1007         }
1008         return err;
1009 }
1010
1011 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1012 {
1013         struct ip175c_state *state = dev->priv;
1014         val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
1015         return 0;
1016 }
1017
1018 static int ip175c_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1019 {
1020         struct ip175c_state *state = dev->priv;
1021         int vlan = val->port_vlan;
1022
1023         if (vlan < 0 || vlan >= MAX_VLANS)
1024                 return -EINVAL;
1025
1026         val->value.i = state->vlans[vlan].tag;
1027         return 0;
1028 }
1029
1030 static int ip175c_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1031 {
1032         struct ip175c_state *state = dev->priv;
1033         int vlan = val->port_vlan;
1034         int tag = val->value.i;
1035
1036         if (vlan < 0 || vlan >= MAX_VLANS)
1037                 return -EINVAL;
1038
1039         if (tag < 0 || tag > 4095)
1040                 return -EINVAL;
1041
1042         state->vlans[vlan].tag = tag;
1043         return state->regs->update_state(state);
1044 }
1045
1046 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1047 {
1048         struct ip175c_state *state = dev->priv;
1049         int nr = val->port_vlan;
1050         int ctrl;
1051         int autoneg;
1052         int speed;
1053         if (val->value.i == 100) {
1054                 speed = 1;
1055                 autoneg = 0;
1056         } else if (val->value.i == 10) {
1057                 speed = 0;
1058                 autoneg = 0;
1059         } else {
1060                 autoneg = 1;
1061                 speed = 1;
1062         }
1063
1064         /* Can't set speed for cpu port */
1065         if (nr == state->regs->CPU_PORT)
1066                 return -EINVAL;
1067
1068         if (nr >= dev->ports || nr < 0)
1069                 return -EINVAL;
1070
1071         ctrl = ip_phy_read(state, nr, 0);
1072         if (ctrl < 0)
1073                 return -EIO;
1074
1075         ctrl &= (~(1<<12));
1076         ctrl &= (~(1<<13));
1077         ctrl |= (autoneg<<12);
1078         ctrl |= (speed<<13);
1079
1080         return ip_phy_write(state, nr, 0, ctrl);
1081 }
1082
1083 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1084 {
1085         struct ip175c_state *state = dev->priv;
1086         int nr = val->port_vlan;
1087         int speed, status;
1088
1089         if (nr == state->regs->CPU_PORT) {
1090                 val->value.i = 100;
1091                 return 0;
1092         }
1093
1094         if (nr >= dev->ports || nr < 0)
1095                 return -EINVAL;
1096
1097         status = ip_phy_read(state, nr, 1);
1098         speed = ip_phy_read(state, nr, 18);
1099         if (status < 0 || speed < 0)
1100                 return -EIO;
1101
1102         if (status & 4)
1103                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1104         else
1105                 val->value.i = 0;
1106
1107         return 0;
1108 }
1109
1110 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1111 {
1112         struct ip175c_state *state = dev->priv;
1113         int ctrl, speed, status;
1114         int nr = val->port_vlan;
1115         int len;
1116         char *buf = state->buf; // fixed-length at 80.
1117
1118         if (nr == state->regs->CPU_PORT) {
1119                 sprintf(buf, "up, 100 Mbps, cpu port");
1120                 val->value.s = buf;
1121                 return 0;
1122         }
1123
1124         if (nr >= dev->ports || nr < 0)
1125                 return -EINVAL;
1126
1127         ctrl = ip_phy_read(state, nr, 0);
1128         status = ip_phy_read(state, nr, 1);
1129         speed = ip_phy_read(state, nr, 18);
1130         if (ctrl < 0 || status < 0 || speed < 0)
1131                 return -EIO;
1132
1133         if (status & 4)
1134                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1135                         ((speed & (1<<11)) ? 100 : 10),
1136                         ((speed & (1<<10)) ? "full" : "half"));
1137         else
1138                 len = sprintf(buf, "down");
1139
1140         if (ctrl & (1<<12)) {
1141                 len += sprintf(buf+len, ", auto-negotiate");
1142                 if (!(status & (1<<5)))
1143                         len += sprintf(buf+len, " (in progress)");
1144         } else {
1145                 len += sprintf(buf+len, ", fixed speed (%d)",
1146                         ((ctrl & (1<<13)) ? 100 : 10));
1147         }
1148
1149         buf[len] = '\0';
1150         val->value.s = buf;
1151         return 0;
1152 }
1153
1154 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1155 {
1156         struct ip175c_state *state = dev->priv;
1157
1158         *val = state->ports[port].pvid;
1159         return 0;
1160 }
1161
1162 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1163 {
1164         struct ip175c_state *state = dev->priv;
1165         int err;
1166
1167         if (val < 0 || val >= MAX_VLANS)
1168                 return -EINVAL;
1169
1170         err = state->regs->get_state(state);
1171         if (err < 0)
1172                 return err;
1173
1174         state->ports[port].pvid = val;
1175
1176         return state->regs->update_state(state);
1177 }
1178
1179
1180 enum Ports {
1181         IP175C_PORT_STATUS,
1182         IP175C_PORT_LINK,
1183         IP175C_PORT_TAGGED,
1184         IP175C_PORT_PVID,
1185 };
1186
1187 enum Globals {
1188         IP175C_ENABLE_VLAN,
1189         IP175C_GET_NAME,
1190         IP175C_REGISTER_PHY,
1191         IP175C_REGISTER_MII,
1192         IP175C_REGISTER_VALUE,
1193         IP175C_REGISTER_ERRNO,
1194 };
1195
1196 enum Vlans {
1197         IP175C_VLAN_TAG,
1198 };
1199
1200 static const struct switch_attr ip175c_global[] = {
1201         [IP175C_ENABLE_VLAN] = {
1202                 .id = IP175C_ENABLE_VLAN,
1203                 .type = SWITCH_TYPE_INT,
1204                 .name  = "enable_vlan",
1205                 .description = "Flag to enable or disable VLANs and tagging",
1206                 .get  = ip175c_get_enable_vlan,
1207                 .set = ip175c_set_enable_vlan,
1208         },
1209         [IP175C_GET_NAME] = {
1210                 .id = IP175C_GET_NAME,
1211                 .type = SWITCH_TYPE_STRING,
1212                 .description = "Returns the type of IC+ chip.",
1213                 .name  = "name",
1214                 .get  = ip175c_read_name,
1215                 .set = NULL,
1216         },
1217         /* jal: added for low level debugging etc. */
1218         [IP175C_REGISTER_PHY] = {
1219                 .id = IP175C_REGISTER_PHY,
1220                 .type = SWITCH_TYPE_INT,
1221                 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1222                 .name  = "phy",
1223                 .get  = ip175c_get_phy,
1224                 .set = ip175c_set_phy,
1225         },
1226         [IP175C_REGISTER_MII] = {
1227                 .id = IP175C_REGISTER_MII,
1228                 .type = SWITCH_TYPE_INT,
1229                 .description = "Direct register access: set MII register number (0-31)",
1230                 .name  = "reg",
1231                 .get  = ip175c_get_reg,
1232                 .set = ip175c_set_reg,
1233         },
1234         [IP175C_REGISTER_VALUE] = {
1235                 .id = IP175C_REGISTER_VALUE,
1236                 .type = SWITCH_TYPE_INT,
1237                 .description = "Direct register access: read/write to register (0-65535)",
1238                 .name  = "val",
1239                 .get  = ip175c_get_val,
1240                 .set = ip175c_set_val,
1241         },
1242 };
1243
1244 static const struct switch_attr ip175c_vlan[] = {
1245         [IP175C_VLAN_TAG] = {
1246                 .id = IP175C_VLAN_TAG,
1247                 .type = SWITCH_TYPE_INT,
1248                 .description = "VLAN tag (0-4095) [IP175D only]",
1249                 .name = "tag",
1250                 .get = ip175c_get_tag,
1251                 .set = ip175c_set_tag,
1252         }
1253 };
1254
1255 static const struct switch_attr ip175c_port[] = {
1256         [IP175C_PORT_STATUS] = {
1257                 .id = IP175C_PORT_STATUS,
1258                 .type = SWITCH_TYPE_STRING,
1259                 .description = "Returns Detailed port status",
1260                 .name  = "status",
1261                 .get  = ip175c_get_port_status,
1262                 .set = NULL,
1263         },
1264         [IP175C_PORT_LINK] = {
1265                 .id = IP175C_PORT_LINK,
1266                 .type = SWITCH_TYPE_INT,
1267                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1268                 .name  = "link",
1269                 .get  = ip175c_get_port_speed,
1270                 .set = ip175c_set_port_speed,
1271         },
1272         [IP175C_PORT_TAGGED] = {
1273                 .id = IP175C_PORT_LINK,
1274                 .type = SWITCH_TYPE_INT,
1275                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1276                 .name  = "tagged",
1277                 .get  = ip175c_get_tagged,
1278                 .set = ip175c_set_tagged,
1279         },
1280 };
1281
1282 static int ip175c_probe(struct phy_device *pdev)
1283 {
1284         struct ip175c_state *state;
1285         struct switch_dev *dev;
1286         int err;
1287
1288         /* We only attach to PHY 0, but use all available PHYs */
1289         if (pdev->addr != 0)
1290                 return -ENODEV;
1291
1292         state = kzalloc(sizeof(*state), GFP_KERNEL);
1293         if (!state)
1294                 return -ENOMEM;
1295
1296         dev = &state->dev;
1297         dev->attr_global.attr = ip175c_global;
1298         dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1299         dev->attr_port.attr = ip175c_port;
1300         dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1301         dev->attr_vlan.attr = ip175c_vlan;
1302         dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1303
1304         dev->get_port_pvid = ip175c_get_pvid;
1305         dev->set_port_pvid = ip175c_set_pvid;
1306         dev->get_vlan_ports = ip175c_get_ports;
1307         dev->set_vlan_ports = ip175c_set_ports;
1308         dev->apply_config = ip175c_apply;
1309         dev->reset_switch = ip175c_reset;
1310
1311         dev->priv = state;
1312         pdev->priv = state;
1313         state->mii_bus = pdev->bus;
1314
1315         err = get_model(state);
1316         if (err < 0)
1317                 goto error;
1318
1319         dev->vlans = MAX_VLANS;
1320         dev->cpu_port = state->regs->CPU_PORT;
1321         dev->ports = state->regs->NUM_PORTS;
1322         dev->name = state->regs->NAME;
1323
1324         return 0;
1325
1326 error:
1327         kfree(state);
1328         return err;
1329 }
1330
1331 static int ip175c_config_init(struct phy_device *pdev)
1332 {
1333         struct ip175c_state *state = pdev->priv;
1334         struct net_device *dev = pdev->attached_dev;
1335         int err;
1336
1337         pdev->irq = PHY_IGNORE_INTERRUPT;
1338         err = register_switch(&state->dev, dev);
1339         if (err < 0)
1340                 return err;
1341
1342         ip175c_reset(&state->dev);
1343
1344         state->registered = true;
1345         netif_carrier_on(pdev->attached_dev);
1346
1347         return 0;
1348 }
1349
1350 static void ip175c_remove(struct phy_device *pdev)
1351 {
1352         struct ip175c_state *state = pdev->priv;
1353
1354         if (state->registered)
1355                 unregister_switch(&state->dev);
1356         kfree(state);
1357 }
1358
1359 static int ip175c_config_aneg(struct phy_device *pdev)
1360 {
1361         return 0;
1362 }
1363
1364 static int ip175c_read_status(struct phy_device *pdev)
1365 {
1366         pdev->speed = SPEED_100;
1367         pdev->duplex = DUPLEX_FULL;
1368         pdev->pause = pdev->asym_pause = 0;
1369         return 0;
1370 }
1371
1372 static struct phy_driver ip175c_driver = {
1373         .name           = "IC+ IP175C",
1374         .phy_id         = 0x02430d80,
1375         .phy_id_mask    = 0x0ffffff0,
1376         .features       = PHY_BASIC_FEATURES,
1377         .probe          = ip175c_probe,
1378         .remove         = ip175c_remove,
1379         .config_init    = ip175c_config_init,
1380         .config_aneg    = ip175c_config_aneg,
1381         .read_status    = ip175c_read_status,
1382         .driver         = { .owner = THIS_MODULE },
1383 };
1384
1385 static struct phy_driver ip175a_driver = {
1386         .name           = "IC+ IP175A",
1387         .phy_id         = 0x02430c50,
1388         .phy_id_mask    = 0x0ffffff0,
1389         .features       = PHY_BASIC_FEATURES,
1390         .probe          = ip175c_probe,
1391         .remove         = ip175c_remove,
1392         .config_init    = ip175c_config_init,
1393         .config_aneg    = ip175c_config_aneg,
1394         .read_status    = ip175c_read_status,
1395         .driver         = { .owner = THIS_MODULE },
1396 };
1397
1398
1399 int __init ip175c_init(void)
1400 {
1401         int ret;
1402
1403         ret = phy_driver_register(&ip175a_driver);
1404         if (ret < 0)
1405                 return ret;
1406
1407         return phy_driver_register(&ip175c_driver);
1408 }
1409
1410 void __exit ip175c_exit(void)
1411 {
1412         phy_driver_unregister(&ip175c_driver);
1413         phy_driver_unregister(&ip175a_driver);
1414 }
1415
1416 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1417 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1418 MODULE_LICENSE("GPL");
1419
1420 module_init(ip175c_init);
1421 module_exit(ip175c_exit);