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
  32 typedef struct ip175c_reg {
  33         u16 p;                  // phy
  34         u16 m;                  // mii
  35 } reg;
  36 typedef char bitnum;
  37
  38 #define NOTSUPPORTED {-1,-1}
  39
  40 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
  41
  42 /*********** CONSTANTS ***********/
  43 struct register_mappings {
  44         char *NAME;
  45         u16 MODEL_NO;                   // compare to bits 4-9 of MII register 0,3.
  46         bitnum NUM_PORTS;
  47         bitnum CPU_PORT;
  48
  49 /* The default VLAN for each port.
  50          Default: 0x0001 for Ports 0,1,2,3
  51                   0x0002 for Ports 4,5 */
  52         reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
  53
  54 /* These ports are tagged.
  55          Default: 0x00 */
  56         reg ADD_TAG_REG;
  57         reg REMOVE_TAG_REG;
  58         bitnum ADD_TAG_BIT[MAX_PORTS];
  59 /* These ports are untagged.
  60          Default: 0x00 (i.e. do not alter any VLAN tags...)
  61          Maybe set to 0 if user disables VLANs. */
  62         bitnum REMOVE_TAG_BIT[MAX_PORTS];
  63
  64 /* Port M and Port N are on the same VLAN.
  65          Default: All ports on all VLANs. */
  66 // Use register {29, 19+N/2}
  67         reg VLAN_LOOKUP_REG;
  68 // Port 5 uses register {30, 18} but same as odd bits.
  69         reg VLAN_LOOKUP_REG_5;          // in a different register on IP175C.
  70         bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
  71         bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
  72
  73 /* This VLAN corresponds to which ports.
  74          Default: 0x2f,0x30,0x3f,0x3f... */
  75         reg TAG_VLAN_MASK_REG;
  76         bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
  77         bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
  78
  79         int RESET_VAL;
  80         reg RESET_REG;
  81
  82         reg MODE_REG;
  83         int MODE_VAL;
  84
  85 /* General flags */
  86         reg ROUTER_CONTROL_REG;
  87         reg VLAN_CONTROL_REG;
  88         bitnum TAG_VLAN_BIT;
  89         bitnum ROUTER_EN_BIT;
  90         bitnum NUMLAN_GROUPS_MAX;
  91         bitnum NUMLAN_GROUPS_BIT;
  92
  93         reg MII_REGISTER_EN;
  94         bitnum MII_REGISTER_EN_BIT;
  95
  96         // set to 1 for 178C, 0 for 175C.
  97         bitnum SIMPLE_VLAN_REGISTERS;   // 175C has two vlans per register but 178C has only one.
  98 };
  99
 100 static const struct register_mappings IP178C = {
 101         .NAME = "IP178C",
 102         .MODEL_NO = 0x18,
 103         .VLAN_DEFAULT_TAG_REG = {
 104                 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
 105                 {30,9},{30,10},{30,11},
 106         },
 107
 108         .ADD_TAG_REG = {30,12},
 109         .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
 110         .REMOVE_TAG_REG = {30,13},
 111         .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
 112
 113         .SIMPLE_VLAN_REGISTERS = 1,
 114
 115         .VLAN_LOOKUP_REG = {31,0},// +N
 116         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
 117         .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 118         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 119
 120         .TAG_VLAN_MASK_REG = {30,14}, // +N
 121         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 122         .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 123
 124         .RESET_VAL = 0x55AA,
 125         .RESET_REG = {30,0},
 126         .MODE_VAL = 0,
 127         .MODE_REG = NOTSUPPORTED,
 128
 129         .ROUTER_CONTROL_REG = {30,30},
 130         .ROUTER_EN_BIT = 11,
 131         .NUMLAN_GROUPS_MAX = 8,
 132         .NUMLAN_GROUPS_BIT = 8, // {0-2}
 133
 134         .VLAN_CONTROL_REG = {30,13},
 135         .TAG_VLAN_BIT = 3,
 136
 137         .CPU_PORT = 8,
 138         .NUM_PORTS = 9,
 139
 140         .MII_REGISTER_EN = NOTSUPPORTED,
 141
 142 };
 143
 144 static const struct register_mappings IP175C = {
 145         .NAME = "IP175C",
 146         .MODEL_NO = 0x18,
 147         .VLAN_DEFAULT_TAG_REG = {
 148                 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
 149                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 150         },
 151
 152         .ADD_TAG_REG = {29,23},
 153         .REMOVE_TAG_REG = {29,23},
 154         .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
 155         .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
 156
 157         .SIMPLE_VLAN_REGISTERS = 0,
 158
 159         .VLAN_LOOKUP_REG = {29,19},// +N/2
 160         .VLAN_LOOKUP_REG_5 = {30,18},
 161         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
 162         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
 163
 164         .TAG_VLAN_MASK_REG = {30,1}, // +N/2
 165         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
 166         .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
 167
 168         .RESET_VAL = 0x175C,
 169         .RESET_REG = {30,0},
 170         .MODE_VAL = 0x175C,
 171         .MODE_REG = {29,31},
 172
 173         .ROUTER_CONTROL_REG = {30,9},
 174         .ROUTER_EN_BIT = 3,
 175         .NUMLAN_GROUPS_MAX = 8,
 176         .NUMLAN_GROUPS_BIT = 0, // {0-2}
 177
 178         .VLAN_CONTROL_REG = {30,9},
 179         .TAG_VLAN_BIT = 7,
 180
 181         .NUM_PORTS = 6,
 182         .CPU_PORT = 5,
 183
 184         .MII_REGISTER_EN = NOTSUPPORTED,
 185
 186 };
 187
 188 static const struct register_mappings IP175A = {
 189         .NAME = "IP175A",
 190         .MODEL_NO = 0x05,
 191         .VLAN_DEFAULT_TAG_REG = {
 192                 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
 193                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 194         },
 195
 196         .ADD_TAG_REG = {0,23},
 197         .REMOVE_TAG_REG = {0,23},
 198         .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
 199         .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
 200
 201         .SIMPLE_VLAN_REGISTERS = 1,
 202
 203         // Only programmable via. EEPROM
 204         .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
 205         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
 206         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
 207         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
 208
 209         .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2
 210         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
 211         .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
 212
 213         .RESET_VAL = -1,
 214         .RESET_REG = NOTSUPPORTED,
 215         .MODE_VAL = 0,
 216         .MODE_REG = NOTSUPPORTED,
 217
 218         .ROUTER_CONTROL_REG = NOTSUPPORTED,
 219         .VLAN_CONTROL_REG = NOTSUPPORTED,
 220         .TAG_VLAN_BIT = -1,
 221         .ROUTER_EN_BIT = -1,
 222         .NUMLAN_GROUPS_MAX = -1,
 223         .NUMLAN_GROUPS_BIT = -1, // {0-2}
 224
 225         .NUM_PORTS = 6,
 226         .CPU_PORT = 5,
 227
 228         .MII_REGISTER_EN = {0, 12},
 229         .MII_REGISTER_EN_BIT = 7,
 230 };
 231
 232 struct ip175c_state {
 233         struct switch_dev dev;
 234         struct mii_bus *mii_bus;
 235         bool registered;
 236
 237         int router_mode;                // ROUTER_EN
 238         int vlan_enabled;               // TAG_VLAN_EN
 239         struct port_state {
 240                 u16 pvid;
 241                 unsigned int shareports;
 242         } ports[MAX_PORTS];
 243         unsigned int add_tag;
 244         unsigned int remove_tag;
 245         int num_vlans;
 246         unsigned int vlan_ports[MAX_VLANS];
 247         const struct register_mappings *regs;
 248         reg proc_mii; /*!< phy/reg for the low level register access via /proc */
 249
 250         char buf[80];
 251 };
 252
 253 static int ip_phy_read(struct mii_bus *bus, int port, int reg)
 254 {
 255         int val;
 256
 257         mutex_lock(&bus->mdio_lock);
 258         val = bus->read(bus, port, reg);
 259         mutex_unlock(&bus->mdio_lock);
 260
 261         return val;
 262 }
 263
 264
 265 static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
 266 {
 267         int err;
 268
 269         mutex_lock(&bus->mdio_lock);
 270         err = bus->write(bus, port, reg, val);
 271         mutex_unlock(&bus->mdio_lock);
 272
 273         return err;
 274 }
 275
 276
 277 static int getPhy (struct ip175c_state *state, reg mii)
 278 {
 279         struct mii_bus *bus = state->mii_bus;
 280         int val;
 281
 282         if (!REG_SUPP(mii))
 283                 return -EFAULT;
 284
 285         val = ip_phy_read(bus, mii.p, mii.m);
 286         if (val < 0)
 287                 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
 288
 289         return val;
 290 }
 291
 292 static int setPhy (struct ip175c_state *state, reg mii, u16 value)
 293 {
 294         struct mii_bus *bus = state->mii_bus;
 295         int err;
 296
 297         if (!REG_SUPP(mii))
 298                 return -EFAULT;
 299
 300         err = ip_phy_write(bus, mii.p, mii.m, value);
 301         if (err < 0) {
 302                 pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
 303                 return err;
 304         }
 305         mdelay(2);
 306         getPhy(state, mii);
 307         return 0;
 308 }
 309
 310 /**
 311  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 312  * NOTE: these macros will return if there is an error!
 313  */
 314
 315 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 316         do {                                                    \
 317                 int i, val = getPhy((state), (addr));           \
 318                 if (val < 0)                                    \
 319                         return val;                             \
 320                 (bits) = 0;                                     \
 321                 for (i = 0; i < MAX_PORTS; i++) {               \
 322                         if ((bit_lookup)[i] == -1) continue;    \
 323                         if (val & (1<<(bit_lookup)[i]))         \
 324                                 (bits) |= (1<<i);               \
 325                 }                                               \
 326         } while (0)
 327
 328 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 329         do {                                                    \
 330                 int i, val = getPhy((state), (addr));           \
 331                 if (val < 0)                                    \
 332                         return val;                             \
 333                 for (i = 0; i < MAX_PORTS; i++) {               \
 334                         unsigned int newmask = ((bits)&(1<<i)); \
 335                         if ((bit_lookup)[i] == -1) continue;    \
 336                         val &= ~(1<<(bit_lookup)[i]);           \
 337                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 338                 }                                               \
 339                 val = setPhy((state), (addr), val);             \
 340                 if (val < 0)                                    \
 341                         return val;                             \
 342         } while (0)
 343
 344 static int get_model(struct ip175c_state *state)
 345 {
 346         reg oui_id_reg = {0, 2};
 347         int oui_id;
 348         reg model_no_reg = {0, 3};
 349         int model_no, model_no_orig;
 350
 351         // 175 and 178 have the same oui ID.
 352         reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
 353         int is_178c = 0;
 354
 355         oui_id = getPhy(state, oui_id_reg);
 356         if (oui_id != 0x0243) {
 357                 // non
 358                 return -ENODEV; // Not a IC+ chip.
 359         }
 360         oui_id = getPhy(state, oui_id_reg_178c);
 361         if (oui_id == 0x0243) {
 362                 is_178c = 1;
 363         }
 364
 365         model_no_orig = getPhy(state, model_no_reg);
 366         if (model_no_orig < 0) {
 367                 return -ENODEV;
 368         }
 369         model_no = model_no_orig >> 4; // shift out revision number.
 370         model_no &= 0x3f; // only take the model number (low 6 bits).
 371         if (model_no == IP175A.MODEL_NO) {
 372                 state->regs = &IP175A;
 373         } else if (model_no == IP175C.MODEL_NO) {
 374                 if (is_178c) {
 375                         state->regs = &IP178C;
 376                 } else {
 377                         state->regs = &IP175C;
 378                 }
 379         } else {
 380                 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
 381                 return -EPERM;
 382         }
 383         return 0;
 384 }
 385
 386 /** Get only the vlan and router flags on the router **/
 387 static int get_flags(struct ip175c_state *state)
 388 {
 389         int val;
 390
 391         state->router_mode = 0;
 392         state->vlan_enabled = -1; // hack
 393         state->num_vlans = 0;
 394
 395         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 396                 return 0; // not an error if it doesn't support enable vlan.
 397         }
 398
 399         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 400         if (val < 0) {
 401                 return val;
 402         }
 403         if (state->regs->ROUTER_EN_BIT >= 0)
 404                 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
 405
 406         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 407                 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
 408                 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
 409                 state->num_vlans+=1; // does not include WAN.
 410         }
 411
 412
 413         val = getPhy(state, state->regs->VLAN_CONTROL_REG);
 414         if (val < 0) {
 415                 return 0;
 416         }
 417         if (state->regs->TAG_VLAN_BIT >= 0)
 418                 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
 419
 420         return  0;
 421 }
 422 /** Get all state variables for VLAN mappings and port-based tagging. **/
 423 static int get_state(struct ip175c_state *state)
 424 {
 425         int i, j;
 426         int ret;
 427         ret = get_flags(state);
 428         if (ret < 0) {
 429                 return ret;
 430         }
 431         GET_PORT_BITS(state, state->remove_tag,
 432                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 433         GET_PORT_BITS(state, state->add_tag,
 434                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 435
 436         if (state->vlan_enabled == -1) {
 437                 // not sure how to get this...
 438                 state->vlan_enabled = (!state->remove_tag && !state->add_tag);
 439         }
 440
 441         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 442         for (j=0; j<MAX_PORTS; j++) {
 443                 state->ports[j].shareports = 0; // initialize them in case.
 444         }
 445         for (j=0; j<state->regs->NUM_PORTS; j++) {
 446                 reg addr;
 447                 const bitnum *bit_lookup = (j%2==0)?
 448                         state->regs->VLAN_LOOKUP_EVEN_BIT:
 449                         state->regs->VLAN_LOOKUP_ODD_BIT;
 450                 addr = state->regs->VLAN_LOOKUP_REG;
 451                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 452                         addr.m += j;
 453                 } else {
 454                         switch (j) {
 455                         case 0:
 456                         case 1:
 457                                 break;
 458                         case 2:
 459                         case 3:
 460                                 addr.m+=1;
 461                                 break;
 462                         case 4:
 463                                 addr.m+=2;
 464                                 break;
 465                         case 5:
 466                                 addr = state->regs->VLAN_LOOKUP_REG_5;
 467                                 break;
 468                         }
 469                 }
 470
 471                 if (REG_SUPP(addr)) {
 472                         GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 473                 }
 474         }
 475         } else {
 476                 for (j=0; j<MAX_PORTS; j++) {
 477                         state->ports[j].shareports = 0xff;
 478                 }
 479         }
 480
 481         for (i=0; i<MAX_PORTS; i++) {
 482                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 483                         int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
 484                         if (val < 0) {
 485                                 return val;
 486                         }
 487                         state->ports[i].pvid = val;
 488                 } else {
 489                         state->ports[i].pvid = 0;
 490                 }
 491         }
 492
 493         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 494                 for (j=0; j<MAX_VLANS; j++) {
 495                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 496                         const bitnum *bit_lookup = (j%2==0)?
 497                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 498                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 499                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 500                                 addr.m += j;
 501                         } else {
 502                                 addr.m += j/2;
 503                         }
 504                         GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
 505                 }
 506         } else {
 507                 for (j=0; j<MAX_VLANS; j++) {
 508                         state->vlan_ports[j] = 0;
 509                         for (i=0; i<state->regs->NUM_PORTS; i++) {
 510                                 if ((state->ports[i].pvid == j) ||
 511                                                 (state->ports[i].pvid == 0)) {
 512                                         state->vlan_ports[j] |= (1<<i);
 513                                 }
 514                         }
 515                 }
 516         }
 517
 518         return 0;
 519 }
 520
 521
 522 /** Only update vlan and router flags in the switch **/
 523 static int update_flags(struct ip175c_state *state)
 524 {
 525         int val;
 526
 527         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 528                 return 0;
 529         }
 530
 531         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 532         if (val < 0) {
 533                 return val;
 534         }
 535         if (state->regs->ROUTER_EN_BIT >= 0) {
 536                 if (state->router_mode) {
 537                         val |= (1<<state->regs->ROUTER_EN_BIT);
 538                 } else {
 539                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 540                 }
 541         }
 542         if (state->regs->TAG_VLAN_BIT >= 0) {
 543                 if (state->vlan_enabled) {
 544                         val |= (1<<state->regs->TAG_VLAN_BIT);
 545                 } else {
 546                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 547                 }
 548         }
 549         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 550                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 551                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 552                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 553                 } else if (state->num_vlans >= 1) {
 554                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 555                 }
 556         }
 557         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 558 }
 559
 560 /** Update all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 561 static int update_state(struct ip175c_state *state)
 562 {
 563         int j;
 564         int i;
 565         SET_PORT_BITS(state, state->add_tag,
 566                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 567         SET_PORT_BITS(state, state->remove_tag,
 568                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 569
 570         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 571         for (j=0; j<state->regs->NUM_PORTS; j++) {
 572                 reg addr;
 573                 const bitnum *bit_lookup = (j%2==0)?
 574                         state->regs->VLAN_LOOKUP_EVEN_BIT:
 575                         state->regs->VLAN_LOOKUP_ODD_BIT;
 576
 577                 // duplicate code -- sorry
 578                 addr = state->regs->VLAN_LOOKUP_REG;
 579                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 580                         addr.m += j;
 581                 } else {
 582                         switch (j) {
 583                         case 0:
 584                         case 1:
 585                                 break;
 586                         case 2:
 587                         case 3:
 588                                 addr.m+=1;
 589                                 break;
 590                         case 4:
 591                                 addr.m+=2;
 592                                 break;
 593                         case 5:
 594                                 addr = state->regs->VLAN_LOOKUP_REG_5;
 595                                 break;
 596                         default:
 597                                 addr.m = -1; // shouldn't get here, but...
 598                                 break;
 599                         }
 600                 }
 601                 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 602                 if (REG_SUPP(addr)) {
 603                         SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 604                 }
 605         }
 606         }
 607         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 608         for (j=0; j<MAX_VLANS; j++) {
 609                 reg addr = state->regs->TAG_VLAN_MASK_REG;
 610                 const bitnum *bit_lookup = (j%2==0)?
 611                         state->regs->TAG_VLAN_MASK_EVEN_BIT:
 612                         state->regs->TAG_VLAN_MASK_ODD_BIT;
 613                 unsigned int vlan_mask;
 614                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 615                         addr.m += j;
 616                 } else {
 617                         addr.m += j/2;
 618                 }
 619                 vlan_mask = state->vlan_ports[j];
 620                 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 621         }
 622         }
 623
 624         for (i=0; i<MAX_PORTS; i++) {
 625                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 626                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 627                                         state->ports[i].pvid);
 628                         if (err < 0) {
 629                                 return err;
 630                         }
 631                 }
 632         }
 633
 634         return update_flags(state);
 635
 636         // software reset: 30.0 = 0x175C
 637         // wait 2ms
 638         // reset ports 0,1,2,3,4
 639 }
 640
 641 /*
 642   Uses only the VLAN port mask and the add tag mask to generate the other fields:
 643   which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 644  */
 645 static void correct_vlan_state(struct ip175c_state *state)
 646 {
 647         int i, j;
 648         state->num_vlans = 0;
 649         for (i=0; i<MAX_VLANS; i++) {
 650                 if (state->vlan_ports[i] != 0) {
 651                         state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
 652                 }
 653         }
 654
 655
 656
 657         for (i=0; i<state->regs->NUM_PORTS; i++) {
 658                 unsigned int portmask = (1<<i);
 659                 if (!state->vlan_enabled) {
 660                         // share with everybody!
 661                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 662                         continue;
 663                 }
 664                 state->ports[i].shareports = portmask;
 665                 for (j=0; j<MAX_VLANS; j++) {
 666                         if (state->vlan_ports[j] & portmask)
 667                                 state->ports[i].shareports |= state->vlan_ports[j];
 668                 }
 669         }
 670         state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
 671 }
 672
 673 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 674 {
 675         struct ip175c_state *state = dev->priv;
 676         int err;
 677
 678         err = get_state(state); // may be set in get_state.
 679         if (err < 0)
 680                 return err;
 681         val->value.i = state->vlan_enabled;
 682         return 0;
 683 }
 684
 685 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 686 {
 687         struct ip175c_state *state = dev->priv;
 688         int err;
 689         int enable;
 690         int i;
 691
 692         err = get_state(state);
 693         if (err < 0)
 694                 return err;
 695         enable = val->value.i;
 696
 697         if (state->vlan_enabled == enable) {
 698                 // do not change any state.
 699                 return 0;
 700         }
 701         state->vlan_enabled = enable;
 702
 703         // Otherwise, if we are switching state, set fields to a known default.
 704         state->remove_tag = 0x0000;
 705         state->add_tag = 0x0000;
 706         for (i = 0; i < MAX_PORTS; i++)
 707                 state->ports[i].shareports = 0xffff;
 708
 709         for (i = 0; i < MAX_VLANS; i++)
 710                 state->vlan_ports[i] = 0x0;
 711
 712         if (state->vlan_enabled) {
 713                 // updates other fields only based off vlan_ports and add_tag fields.
 714                 // Note that by default, no ports are in any vlans.
 715                 correct_vlan_state(state);
 716         }
 717         // ensure sane defaults?
 718         return update_state(state);
 719 }
 720
 721 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
 722 {
 723         struct ip175c_state *state = dev->priv;
 724         int err;
 725         int b;
 726         int ind;
 727         unsigned int ports;
 728
 729         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 730                 return -EINVAL;
 731
 732         err = get_state(state);
 733         if (err<0)
 734                 return err;
 735
 736         ports = state->vlan_ports[val->port_vlan];
 737         b = 0;
 738         ind = 0;
 739         while (b < MAX_PORTS) {
 740                 if (ports&1) {
 741                         int istagged = ((state->add_tag >> b) & 1);
 742                         val->value.ports[ind].id = b;
 743                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 744                         ind++;
 745                 }
 746                 b++;
 747                 ports >>= 1;
 748         }
 749         val->len = ind;
 750
 751         return 0;
 752 }
 753
 754 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
 755 {
 756         struct ip175c_state *state = dev->priv;
 757         int i;
 758         int err;
 759
 760         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 761                 return -EINVAL;
 762
 763         err = get_state(state);
 764         if (err < 0)
 765                 return err;
 766
 767         state->vlan_ports[val->port_vlan] = 0;
 768         for (i = 0; i < val->len; i++) {
 769                 int bitmask = (1<<val->value.ports[i].id);
 770                 state->vlan_ports[val->port_vlan] |= bitmask;
 771                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 772                         state->add_tag |= bitmask;
 773                 } else {
 774                         state->add_tag &= (~bitmask);
 775                 }
 776         }
 777
 778         correct_vlan_state(state);
 779         err = update_state(state);
 780
 781         return err;
 782 }
 783
 784 static int ip175c_apply(struct switch_dev *dev)
 785 {
 786         struct ip175c_state *state = dev->priv;
 787         int err;
 788
 789         err = get_flags(state);
 790         if (err < 0)
 791                 return err;
 792
 793         if (REG_SUPP(state->regs->MII_REGISTER_EN)){
 794                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 795                 if (val < 0) {
 796                         return val;
 797                 }
 798                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 799                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 800         }
 801         return 0;
 802 }
 803
 804 static int ip175c_reset(struct switch_dev *dev)
 805 {
 806         struct ip175c_state *state = dev->priv;
 807         int i, err;
 808
 809         err = get_flags(state);
 810         if (err < 0)
 811                 return err;
 812
 813         if (REG_SUPP(state->regs->RESET_REG)) {
 814                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 815                 if (err < 0)
 816                         return err;
 817                 err = getPhy(state, state->regs->RESET_REG);
 818
 819                 /* data sheet specifies reset period is 2 msec
 820                    (don't see any mention of the 2ms delay in the IP178C spec, only
 821                     in IP175C, but it can't hurt.) */
 822                 mdelay(2);
 823         }
 824
 825         if (REG_SUPP(state->regs->MODE_REG)) {
 826                 err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
 827                 if (err < 0)
 828                         return err;
 829                 err = getPhy(state, state->regs->MODE_REG);
 830         }
 831
 832         /* reset switch ports */
 833         for (i = 0; i < 5; i++) {
 834                 err = state->mii_bus->write(state->mii_bus, i,
 835                                          MII_BMCR, BMCR_RESET);
 836                 if (err < 0)
 837                         return err;
 838         }
 839
 840         return 0;
 841 }
 842
 843 /*! get the current register number */
 844 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 845 {
 846         struct ip175c_state *state = dev->priv;
 847         int err;
 848
 849         err = get_state(state);
 850         if (err < 0)
 851                 return err;
 852
 853         if (state->add_tag & (1<<val->port_vlan)) {
 854                 if (state->remove_tag & (1<<val->port_vlan))
 855                         val->value.i = 3; // shouldn't ever happen.
 856                 else
 857                         val->value.i = 1;
 858         } else {
 859                 if (state->remove_tag & (1<<val->port_vlan))
 860                         val->value.i = 0;
 861                 else
 862                         val->value.i = 2;
 863         }
 864         return 0;
 865 }
 866
 867 /*! set a new register address for low level access to registers */
 868 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 869 {
 870         struct ip175c_state *state = dev->priv;
 871         int err;
 872
 873         err = get_state(state);
 874         if (err < 0)
 875                 return err;
 876
 877         state->add_tag &= ~(1<<val->port_vlan);
 878         state->remove_tag &= ~(1<<val->port_vlan);
 879
 880         if (val->value.i == 0)
 881                 state->remove_tag |= (1<<val->port_vlan);
 882         if (val->value.i == 1)
 883                 state->add_tag |= (1<<val->port_vlan);
 884
 885         SET_PORT_BITS(state, state->add_tag,
 886                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 887         SET_PORT_BITS(state, state->remove_tag,
 888                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 889
 890         return err;
 891 }
 892
 893
 894 /* low level /proc procedures */
 895
 896 /*! get the current phy address */
 897 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 898 {
 899         struct ip175c_state *state = dev->priv;
 900
 901         val->value.i = state->proc_mii.p;
 902         return 0;
 903 }
 904
 905 /*! set a new phy address for low level access to registers */
 906 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 907 {
 908         struct ip175c_state *state = dev->priv;
 909         int new_reg = val->value.i;
 910
 911         if (new_reg < 0 || new_reg > 31)
 912                 state->proc_mii.p = (u16)-1;
 913         else
 914                 state->proc_mii.p = (u16)new_reg;
 915         return 0;
 916 }
 917
 918 /*! get the current register number */
 919 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 920 {
 921         struct ip175c_state *state = dev->priv;
 922
 923         val->value.i = state->proc_mii.m;
 924         return 0;
 925 }
 926
 927 /*! set a new register address for low level access to registers */
 928 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 929 {
 930         struct ip175c_state *state = dev->priv;
 931         int new_reg = val->value.i;
 932
 933         if (new_reg < 0 || new_reg > 31)
 934                 state->proc_mii.m = (u16)-1;
 935         else
 936                 state->proc_mii.m = (u16)new_reg;
 937         return 0;
 938 }
 939
 940 /*! get the register content of state->proc_mii */
 941 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 942 {
 943         struct ip175c_state *state = dev->priv;
 944         int retval = -EINVAL;
 945         if (REG_SUPP(state->proc_mii))
 946                 retval = getPhy(state, state->proc_mii);
 947
 948         if (retval < 0) {
 949                 return retval;
 950         } else {
 951                 val->value.i = retval;
 952                 return 0;
 953         }
 954 }
 955
 956 /*! write a value to the register defined by phy/reg above */
 957 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 958 {
 959         struct ip175c_state *state = dev->priv;
 960         int myval, err = 0;
 961
 962         myval = val->value.i;
 963         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
 964                 err = setPhy(state, state->proc_mii, (u16)myval);
 965         }
 966         return err;
 967 }
 968
 969 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 970 {
 971         struct ip175c_state *state = dev->priv;
 972         val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
 973         return 0;
 974 }
 975
 976
 977 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 978 {
 979         struct ip175c_state *state = dev->priv;
 980         struct mii_bus *bus = state->mii_bus;
 981         int nr = val->port_vlan;
 982         int ctrl;
 983         int autoneg;
 984         int speed;
 985         if (val->value.i == 100) {
 986                 speed = 1;
 987                 autoneg = 0;
 988         } else if (val->value.i == 10) {
 989                 speed = 0;
 990                 autoneg = 0;
 991         } else {
 992                 autoneg = 1;
 993                 speed = 1;
 994         }
 995
 996         /* can't set speed for cpu port */
 997         if (nr == state->regs->CPU_PORT)
 998                 return -EINVAL;
 999
1000         if (nr >= dev->ports || nr < 0)
1001                 return -EINVAL;
1002
1003         ctrl = ip_phy_read(bus, nr, 0);
1004         if (ctrl < 0)
1005                 return -EIO;
1006
1007         ctrl &= (~(1<<12));
1008         ctrl &= (~(1<<13));
1009         ctrl |= (autoneg<<12);
1010         ctrl |= (speed<<13);
1011
1012         return ip_phy_write(bus, nr, 0, ctrl);
1013 }
1014
1015 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1016 {
1017         struct ip175c_state *state = dev->priv;
1018         struct mii_bus *bus = state->mii_bus;
1019         int nr = val->port_vlan;
1020         int speed, status;
1021
1022         if (nr == state->regs->CPU_PORT) {
1023                 val->value.i = 100;
1024                 return 0;
1025         }
1026
1027         if (nr >= dev->ports || nr < 0)
1028                 return -EINVAL;
1029
1030         status = ip_phy_read(bus, nr, 1);
1031         speed = ip_phy_read(bus, nr, 18);
1032         if (status < 0 || speed < 0)
1033                 return -EIO;
1034
1035         if (status & 4)
1036                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1037         else
1038                 val->value.i = 0;
1039
1040         return 0;
1041 }
1042
1043
1044 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1045 {
1046         struct ip175c_state *state = dev->priv;
1047         struct mii_bus *bus = state->mii_bus;
1048         int ctrl, speed, status;
1049         int nr = val->port_vlan;
1050         int len;
1051         char *buf = state->buf; // fixed-length at 80.
1052
1053         if (nr == state->regs->CPU_PORT) {
1054                 sprintf(buf, "up, 100 Mbps, cpu port");
1055                 val->value.s = buf;
1056                 return 0;
1057         }
1058
1059         if (nr >= dev->ports || nr < 0)
1060                 return -EINVAL;
1061
1062         ctrl = ip_phy_read(bus, nr, 0);
1063         status = ip_phy_read(bus, nr, 1);
1064         speed = ip_phy_read(bus, nr, 18);
1065         if (ctrl < 0 || status < 0 || speed < 0)
1066                 return -EIO;
1067
1068         if (status & 4)
1069                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1070                         ((speed & (1<<11)) ? 100 : 10),
1071                         ((speed & (1<<10)) ? "full" : "half"));
1072         else
1073                 len = sprintf(buf, "down");
1074
1075         if (ctrl & (1<<12)) {
1076                 len += sprintf(buf+len, ", auto-negotiate");
1077                 if (!(status & (1<<5)))
1078                         len += sprintf(buf+len, " (in progress)");
1079         } else {
1080                 len += sprintf(buf+len, ", fixed speed (%d)",
1081                         ((ctrl & (1<<13)) ? 100 : 10));
1082         }
1083
1084         buf[len] = '\0';
1085         val->value.s = buf;
1086         return 0;
1087 }
1088
1089 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1090 {
1091         struct ip175c_state *state = dev->priv;
1092
1093         *val = state->ports[port].pvid;
1094         return 0;
1095 }
1096
1097 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1098 {
1099         struct ip175c_state *state = dev->priv;
1100
1101         state->ports[port].pvid = val;
1102
1103         if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
1104                 return 0;
1105
1106         return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
1107 }
1108
1109
1110 enum Ports {
1111         IP175C_PORT_STATUS,
1112         IP175C_PORT_LINK,
1113         IP175C_PORT_TAGGED,
1114         IP175C_PORT_PVID,
1115 };
1116
1117 enum Globals {
1118         IP175C_RESET,
1119         IP175C_ENABLE_VLAN,
1120         IP175C_GET_NAME,
1121         IP175C_REGISTER_PHY,
1122         IP175C_REGISTER_MII,
1123         IP175C_REGISTER_VALUE,
1124         IP175C_REGISTER_ERRNO,
1125 };
1126
1127 static const struct switch_attr ip175c_global[] = {
1128         [IP175C_ENABLE_VLAN] = {
1129                 .id = IP175C_ENABLE_VLAN,
1130                 .type = SWITCH_TYPE_INT,
1131                 .name  = "enable_vlan",
1132                 .description = "Flag to enable or disable VLANs and tagging",
1133                 .get  = ip175c_get_enable_vlan,
1134                 .set = ip175c_set_enable_vlan,
1135         },
1136         [IP175C_GET_NAME] = {
1137                 .id = IP175C_GET_NAME,
1138                 .type = SWITCH_TYPE_STRING,
1139                 .description = "Returns the type of IC+ chip.",
1140                 .name  = "name",
1141                 .get  = ip175c_read_name,
1142                 .set = NULL,
1143         },
1144         /* jal: added for low level debugging etc. */
1145         [IP175C_REGISTER_PHY] = {
1146                 .id = IP175C_REGISTER_PHY,
1147                 .type = SWITCH_TYPE_INT,
1148                 .description = "Direct register access: set phy (0-4, or 29,30,31)",
1149                 .name  = "phy",
1150                 .get  = ip175c_get_phy,
1151                 .set = ip175c_set_phy,
1152         },
1153         [IP175C_REGISTER_MII] = {
1154                 .id = IP175C_REGISTER_MII,
1155                 .type = SWITCH_TYPE_INT,
1156                 .description = "Direct register access: set mii number (0-31)",
1157                 .name  = "reg",
1158                 .get  = ip175c_get_reg,
1159                 .set = ip175c_set_reg,
1160         },
1161         [IP175C_REGISTER_VALUE] = {
1162                 .id = IP175C_REGISTER_VALUE,
1163                 .type = SWITCH_TYPE_INT,
1164                 .description = "Direct register access: read/write to register (0-65535)",
1165                 .name  = "val",
1166                 .get  = ip175c_get_val,
1167                 .set = ip175c_set_val,
1168         },
1169 };
1170
1171 static const struct switch_attr ip175c_vlan[] = {
1172 };
1173
1174 static const struct switch_attr ip175c_port[] = {
1175         [IP175C_PORT_STATUS] = {
1176                 .id = IP175C_PORT_STATUS,
1177                 .type = SWITCH_TYPE_STRING,
1178                 .description = "Returns Detailed port status",
1179                 .name  = "status",
1180                 .get  = ip175c_get_port_status,
1181                 .set = NULL,
1182         },
1183         [IP175C_PORT_LINK] = {
1184                 .id = IP175C_PORT_LINK,
1185                 .type = SWITCH_TYPE_INT,
1186                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1187                 .name  = "link",
1188                 .get  = ip175c_get_port_speed,
1189                 .set = ip175c_set_port_speed,
1190         },
1191         [IP175C_PORT_TAGGED] = {
1192                 .id = IP175C_PORT_LINK,
1193                 .type = SWITCH_TYPE_INT,
1194                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1195                 .name  = "tagged",
1196                 .get  = ip175c_get_tagged,
1197                 .set = ip175c_set_tagged,
1198         },
1199 };
1200
1201 static int ip175c_probe(struct phy_device *pdev)
1202 {
1203         struct ip175c_state *state;
1204         struct switch_dev *dev;
1205         int err;
1206
1207         /* we only attach to PHY 0, but use all available PHYs */
1208         if (pdev->addr != 0)
1209                 return -ENODEV;
1210
1211         state = kzalloc(sizeof(*state), GFP_KERNEL);
1212         if (!state)
1213                 return -ENOMEM;
1214
1215         dev = &state->dev;
1216         dev->attr_global.attr = ip175c_global;
1217         dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1218         dev->attr_port.attr = ip175c_port;
1219         dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1220         dev->attr_vlan.attr = ip175c_vlan;
1221         dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1222
1223         dev->get_port_pvid = ip175c_get_pvid;
1224         dev->set_port_pvid = ip175c_set_pvid;
1225         dev->get_vlan_ports = ip175c_get_ports;
1226         dev->set_vlan_ports = ip175c_set_ports;
1227         dev->apply_config = ip175c_apply;
1228         dev->reset_switch = ip175c_reset;
1229
1230         dev->priv = state;
1231         pdev->priv = state;
1232         state->mii_bus = pdev->bus;
1233
1234         err = get_model(state);
1235         if (err < 0)
1236                 goto error;
1237
1238         dev->vlans = MAX_VLANS;
1239         dev->cpu_port = state->regs->CPU_PORT;
1240         dev->ports = state->regs->NUM_PORTS;
1241         dev->name = state->regs->NAME;
1242
1243         return 0;
1244
1245 error:
1246         kfree(state);
1247         return err;
1248 }
1249
1250 static int ip175c_config_init(struct phy_device *pdev)
1251 {
1252         struct ip175c_state *state = pdev->priv;
1253         struct net_device *dev = pdev->attached_dev;
1254         int err;
1255
1256         pdev->irq = PHY_IGNORE_INTERRUPT;
1257         err = register_switch(&state->dev, dev);
1258         if (err < 0)
1259                 return err;
1260
1261         ip175c_reset(&state->dev);
1262
1263         state->registered = true;
1264         netif_carrier_on(pdev->attached_dev);
1265
1266         return 0;
1267 }
1268
1269 static void ip175c_remove(struct phy_device *pdev)
1270 {
1271         struct ip175c_state *state = pdev->priv;
1272
1273         if (state->registered)
1274                 unregister_switch(&state->dev);
1275         kfree(state);
1276 }
1277
1278 static int ip175c_config_aneg(struct phy_device *pdev)
1279 {
1280         return 0;
1281 }
1282
1283 static int ip175c_read_status(struct phy_device *pdev)
1284 {
1285         pdev->speed = SPEED_100;
1286         pdev->duplex = DUPLEX_FULL;
1287         pdev->pause = pdev->asym_pause = 0;
1288         return 0;
1289 }
1290
1291 static struct phy_driver ip175c_driver = {
1292         .name           = "IC+ IP175C",
1293         .phy_id         = 0x02430d80,
1294         .phy_id_mask    = 0x0ffffff0,
1295         .features       = PHY_BASIC_FEATURES,
1296         .probe          = ip175c_probe,
1297         .remove         = ip175c_remove,
1298         .config_init    = ip175c_config_init,
1299         .config_aneg    = ip175c_config_aneg,
1300         .read_status    = ip175c_read_status,
1301         .driver         = { .owner = THIS_MODULE },
1302 };
1303
1304
1305 int __init ip175c_init(void)
1306 {
1307         return phy_driver_register(&ip175c_driver);
1308 }
1309
1310 void __exit ip175c_exit(void)
1311 {
1312         phy_driver_unregister(&ip175c_driver);
1313 }
1314
1315 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1316 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1317 MODULE_LICENSE("GPL");
1318
1319 module_init(ip175c_init);
1320 module_exit(ip175c_exit);
1321