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                 struct phy_device *phy;
 241                 unsigned int shareports;
 242                 u16 vlan_tag;
 243         } ports[MAX_PORTS];
 244         unsigned int add_tag;
 245         unsigned int remove_tag;
 246         int num_vlans;
 247         unsigned int vlan_ports[MAX_VLANS];
 248         const struct register_mappings *regs;
 249         reg proc_mii; /*!< phy/reg for the low level register access via /proc */
 250         int proc_errno; /*!< error code of the last read/write to "val" */
 251
 252         char buf[80];
 253 };
 254
 255 static int getPhy (struct ip175c_state *state, reg mii)
 256 {
 257         struct mii_bus *bus = state->mii_bus;
 258         int err;
 259
 260         if (!REG_SUPP(mii))
 261                 return -EFAULT;
 262         mutex_lock(&bus->mdio_lock);
 263         err = bus->read(bus, mii.p, mii.m);
 264         mutex_unlock(&bus->mdio_lock);
 265         if (err < 0) {
 266                 state->proc_errno = err;
 267                 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-err);
 268                 return err;
 269         }
 270
 271         pr_debug("IP175C: Read MII register %d,%d -> %04x\n", mii.p, mii.m, err);
 272         return err;
 273 }
 274
 275 static int setPhy (struct ip175c_state *state, reg mii, u16 value)
 276 {
 277         struct mii_bus *bus = state->mii_bus;
 278         int err;
 279
 280         if (!REG_SUPP(mii))
 281                 return -EFAULT;
 282         mutex_lock(&bus->mdio_lock);
 283         err = bus->write(bus, mii.p, mii.m, value);
 284         mutex_unlock(&bus->mdio_lock);
 285         if (err < 0) {
 286                 state->proc_errno = err;
 287                 pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
 288                 return err;
 289         }
 290         mdelay(2);
 291         getPhy(state, mii);
 292         pr_debug("IP175C: Set MII register %d,%d to %04x\n", mii.p, mii.m, value);
 293         return 0;
 294 }
 295
 296 /**
 297  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 298  * NOTE: these macros will return if there is an error!
 299  */
 300
 301 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 302         do {                                                    \
 303                 int i, val = getPhy((state), (addr));           \
 304                 if (val < 0)                                    \
 305                         return val;                             \
 306                 (bits) = 0;                                     \
 307                 for (i = 0; i < MAX_PORTS; i++) {               \
 308                         if ((bit_lookup)[i] == -1) continue;    \
 309                         if (val & (1<<(bit_lookup)[i]))         \
 310                                 (bits) |= (1<<i);               \
 311                 }                                               \
 312         } while (0)
 313
 314 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 315         do {                                                    \
 316                 int i, val = getPhy((state), (addr));           \
 317                 if (val < 0)                                    \
 318                         return val;                             \
 319                 for (i = 0; i < MAX_PORTS; i++) {               \
 320                         unsigned int newmask = ((bits)&(1<<i)); \
 321                         if ((bit_lookup)[i] == -1) continue;    \
 322                         val &= ~(1<<(bit_lookup)[i]);           \
 323                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 324                 }                                               \
 325                 val = setPhy((state), (addr), val);             \
 326                 if (val < 0)                                    \
 327                         return val;                             \
 328         } while (0)
 329
 330 static int get_model(struct ip175c_state *state)
 331 {
 332         reg oui_id_reg = {0, 2};
 333         int oui_id;
 334         reg model_no_reg = {0, 3};
 335         int model_no, model_no_orig;
 336
 337         // 175 and 178 have the same oui ID.
 338         reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
 339         int is_178c = 0;
 340
 341         oui_id = getPhy(state, oui_id_reg);
 342         if (oui_id != 0x0243) {
 343                 // non
 344                 return -ENODEV; // Not a IC+ chip.
 345         }
 346         oui_id = getPhy(state, oui_id_reg_178c);
 347         if (oui_id == 0x0243) {
 348                 is_178c = 1;
 349         }
 350
 351         model_no_orig = getPhy(state, model_no_reg);
 352         if (model_no_orig < 0) {
 353                 return -ENODEV;
 354         }
 355         model_no = model_no_orig >> 4; // shift out revision number.
 356         model_no &= 0x3f; // only take the model number (low 6 bits).
 357         if (model_no == IP175A.MODEL_NO) {
 358                 state->regs = &IP175A;
 359         } else if (model_no == IP175C.MODEL_NO) {
 360                 if (is_178c) {
 361                         state->regs = &IP178C;
 362                 } else {
 363                         state->regs = &IP175C;
 364                 }
 365         } else {
 366                 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
 367                 return -EPERM;
 368         }
 369         return 0;
 370 }
 371
 372 /** Get only the vlan and router flags on the router **/
 373 static int get_flags(struct ip175c_state *state)
 374 {
 375         int val;
 376
 377         state->router_mode = 0;
 378         state->vlan_enabled = -1; // hack
 379         state->num_vlans = 0;
 380
 381         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 382                 return 0; // not an error if it doesn't support enable vlan.
 383         }
 384
 385         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 386         if (val < 0) {
 387                 return val;
 388         }
 389         if (state->regs->ROUTER_EN_BIT >= 0)
 390                 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
 391
 392         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 393                 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
 394                 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
 395                 state->num_vlans+=1; // does not include WAN.
 396         }
 397
 398
 399         val = getPhy(state, state->regs->VLAN_CONTROL_REG);
 400         if (val < 0) {
 401                 return 0;
 402         }
 403         if (state->regs->TAG_VLAN_BIT >= 0)
 404                 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
 405
 406         return  0;
 407 }
 408 /** Get all state variables for VLAN mappings and port-based tagging. **/
 409 static int get_state(struct ip175c_state *state)
 410 {
 411         int i, j;
 412         int ret;
 413         ret = get_flags(state);
 414         if (ret < 0) {
 415                 return ret;
 416         }
 417         GET_PORT_BITS(state, state->remove_tag,
 418                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 419         GET_PORT_BITS(state, state->add_tag,
 420                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 421
 422         if (state->vlan_enabled == -1) {
 423                 // not sure how to get this...
 424                 state->vlan_enabled = (!state->remove_tag && !state->add_tag);
 425         }
 426
 427         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 428         for (j=0; j<MAX_PORTS; j++) {
 429                 state->ports[j].shareports = 0; // initialize them in case.
 430         }
 431         for (j=0; j<state->regs->NUM_PORTS; j++) {
 432                 reg addr;
 433                 const bitnum *bit_lookup = (j%2==0)?
 434                         state->regs->VLAN_LOOKUP_EVEN_BIT:
 435                         state->regs->VLAN_LOOKUP_ODD_BIT;
 436                 addr = state->regs->VLAN_LOOKUP_REG;
 437                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 438                         addr.m += j;
 439                 } else {
 440                         switch (j) {
 441                         case 0:
 442                         case 1:
 443                                 break;
 444                         case 2:
 445                         case 3:
 446                                 addr.m+=1;
 447                                 break;
 448                         case 4:
 449                                 addr.m+=2;
 450                                 break;
 451                         case 5:
 452                                 addr = state->regs->VLAN_LOOKUP_REG_5;
 453                                 break;
 454                         }
 455                 }
 456
 457                 if (REG_SUPP(addr)) {
 458                         GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 459                 }
 460         }
 461         } else {
 462                 for (j=0; j<MAX_PORTS; j++) {
 463                         state->ports[j].shareports = 0xff;
 464                 }
 465         }
 466
 467         for (i=0; i<MAX_PORTS; i++) {
 468                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 469                         int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
 470                         if (val < 0) {
 471                                 return val;
 472                         }
 473                         state->ports[i].vlan_tag = val;
 474                 } else {
 475                         state->ports[i].vlan_tag = 0;
 476                 }
 477         }
 478
 479         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 480                 for (j=0; j<MAX_VLANS; j++) {
 481                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 482                         const bitnum *bit_lookup = (j%2==0)?
 483                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 484                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 485                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 486                                 addr.m += j;
 487                         } else {
 488                                 addr.m += j/2;
 489                         }
 490                         GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
 491                 }
 492         } else {
 493                 for (j=0; j<MAX_VLANS; j++) {
 494                         state->vlan_ports[j] = 0;
 495                         for (i=0; i<state->regs->NUM_PORTS; i++) {
 496                                 if ((state->ports[i].vlan_tag == j) ||
 497                                                 (state->ports[i].vlan_tag == 0)) {
 498                                         state->vlan_ports[j] |= (1<<i);
 499                                 }
 500                         }
 501                 }
 502         }
 503
 504         return 0;
 505 }
 506
 507
 508 /** Only update vlan and router flags in the switch **/
 509 static int update_flags(struct ip175c_state *state)
 510 {
 511         int val;
 512
 513         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 514                 return 0;
 515         }
 516
 517         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 518         if (val < 0) {
 519                 return val;
 520         }
 521         if (state->regs->ROUTER_EN_BIT >= 0) {
 522                 if (state->router_mode) {
 523                         val |= (1<<state->regs->ROUTER_EN_BIT);
 524                 } else {
 525                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 526                 }
 527         }
 528         if (state->regs->TAG_VLAN_BIT >= 0) {
 529                 if (state->vlan_enabled) {
 530                         val |= (1<<state->regs->TAG_VLAN_BIT);
 531                 } else {
 532                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 533                 }
 534         }
 535         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 536                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 537                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 538                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 539                 } else if (state->num_vlans >= 1) {
 540                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 541                 }
 542         }
 543         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 544 }
 545
 546 /** Update all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 547 static int update_state(struct ip175c_state *state)
 548 {
 549         int j;
 550         int i;
 551         SET_PORT_BITS(state, state->add_tag,
 552                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 553         SET_PORT_BITS(state, state->remove_tag,
 554                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 555
 556         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 557         for (j=0; j<state->regs->NUM_PORTS; j++) {
 558                 reg addr;
 559                 const bitnum *bit_lookup = (j%2==0)?
 560                         state->regs->VLAN_LOOKUP_EVEN_BIT:
 561                         state->regs->VLAN_LOOKUP_ODD_BIT;
 562
 563                 // duplicate code -- sorry
 564                 addr = state->regs->VLAN_LOOKUP_REG;
 565                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 566                         addr.m += j;
 567                 } else {
 568                         switch (j) {
 569                         case 0:
 570                         case 1:
 571                                 break;
 572                         case 2:
 573                         case 3:
 574                                 addr.m+=1;
 575                                 break;
 576                         case 4:
 577                                 addr.m+=2;
 578                                 break;
 579                         case 5:
 580                                 addr = state->regs->VLAN_LOOKUP_REG_5;
 581                                 break;
 582                         default:
 583                                 addr.m = -1; // shouldn't get here, but...
 584                                 break;
 585                         }
 586                 }
 587                 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 588                 if (REG_SUPP(addr)) {
 589                         SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 590                 }
 591         }
 592         }
 593         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 594         for (j=0; j<MAX_VLANS; j++) {
 595                 reg addr = state->regs->TAG_VLAN_MASK_REG;
 596                 const bitnum *bit_lookup = (j%2==0)?
 597                         state->regs->TAG_VLAN_MASK_EVEN_BIT:
 598                         state->regs->TAG_VLAN_MASK_ODD_BIT;
 599                 unsigned int vlan_mask;
 600                 if (state->regs->SIMPLE_VLAN_REGISTERS) {
 601                         addr.m += j;
 602                 } else {
 603                         addr.m += j/2;
 604                 }
 605                 vlan_mask = state->vlan_ports[j];
 606                 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 607         }
 608         }
 609
 610         for (i=0; i<MAX_PORTS; i++) {
 611                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 612                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 613                                         state->ports[i].vlan_tag);
 614                         if (err < 0) {
 615                                 return err;
 616                         }
 617                 }
 618         }
 619
 620         return update_flags(state);
 621
 622         // software reset: 30.0 = 0x175C
 623         // wait 2ms
 624         // reset ports 0,1,2,3,4
 625 }
 626
 627 /*
 628   Uses only the VLAN port mask and the add tag mask to generate the other fields:
 629   which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 630  */
 631 static void correct_vlan_state(struct ip175c_state *state)
 632 {
 633         int i, j;
 634         state->num_vlans = 0;
 635         for (i=0; i<MAX_VLANS; i++) {
 636                 if (state->vlan_ports[i] != 0) {
 637                         state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
 638                 }
 639         }
 640
 641         for (i=0; i<state->regs->NUM_PORTS; i++) {
 642                 int oldtag = state->ports[i].vlan_tag;
 643                 if (oldtag >= 0 && oldtag < MAX_VLANS) {
 644                         if (state->vlan_ports[oldtag] & (1<<i)) {
 645                                 continue; // primary vlan is valid.
 646                         }
 647                 }
 648                 state->ports[i].vlan_tag = 0;
 649         }
 650
 651         for (i=0; i<state->regs->NUM_PORTS; i++) {
 652                 unsigned int portmask = (1<<i);
 653                 state->ports[i].shareports = portmask;
 654                 for (j=0; j<MAX_VLANS; j++) {
 655                         if (state->vlan_ports[j] & portmask) {
 656                                 state->ports[i].shareports |= state->vlan_ports[j];
 657                                 if (state->ports[i].vlan_tag == 0) {
 658                                         state->ports[i].vlan_tag = j;
 659                                 }
 660                         }
 661                 }
 662                 if (!state->vlan_enabled) {
 663                         // share with everybody!
 664                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 665                 }
 666         }
 667         state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
 668 }
 669
 670 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 671 {
 672         struct ip175c_state *state = dev->priv;
 673         int err;
 674
 675         err = get_state(state); // may be set in get_state.
 676         if (err < 0)
 677                 return err;
 678         val->value.i = state->vlan_enabled;
 679         return 0;
 680 }
 681
 682 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 683 {
 684         struct ip175c_state *state = dev->priv;
 685         int err;
 686         int enable;
 687         int i;
 688
 689         err = get_state(state);
 690         if (err < 0)
 691                 return err;
 692         enable = val->value.i;
 693
 694         if (state->vlan_enabled == enable) {
 695                 // do not change any state.
 696                 return 0;
 697         }
 698         state->vlan_enabled = enable;
 699
 700         // Otherwise, if we are switching state, set fields to a known default.
 701         state->remove_tag = 0x0000;
 702         state->add_tag = 0x0000;
 703         for (i = 0; i < MAX_PORTS; i++) {
 704                 state->ports[i].vlan_tag = 0;
 705                 state->ports[i].shareports = 0xffff;
 706         }
 707         for (i = 0; i < MAX_VLANS; i++) {
 708                 state->vlan_ports[i] = 0x0;
 709         }
 710
 711         if (state->vlan_enabled) {
 712                 // updates other fields only based off vlan_ports and add_tag fields.
 713                 // Note that by default, no ports are in any vlans.
 714                 correct_vlan_state(state);
 715         }
 716         // ensure sane defaults?
 717         return update_state(state);
 718 }
 719
 720 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
 721 {
 722         struct ip175c_state *state = dev->priv;
 723         int err;
 724         int b;
 725         int ind;
 726         unsigned int ports;
 727
 728         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 729                 return -EINVAL;
 730
 731         err = get_state(state);
 732         if (err<0)
 733                 return err;
 734
 735         ports = state->vlan_ports[val->port_vlan];
 736         b = 0;
 737         ind = 0;
 738         while (b < MAX_PORTS) {
 739                 if (ports&1) {
 740                         int istagged = ((state->add_tag >> b) & 1);
 741                         val->value.ports[ind].id = b;
 742                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 743                         ind++;
 744                 }
 745                 b++;
 746                 ports >>= 1;
 747         }
 748         val->len = ind;
 749
 750         return 0;
 751 }
 752
 753 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
 754 {
 755         struct ip175c_state *state = dev->priv;
 756         int i;
 757         int err;
 758
 759         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 760                 return -EINVAL;
 761
 762         err = get_state(state);
 763         if (err < 0)
 764                 return err;
 765
 766         state->vlan_ports[val->port_vlan] = 0;
 767         for (i = 0; i < val->len; i++) {
 768                 int bitmask = (1<<val->value.ports[i].id);
 769                 state->vlan_ports[val->port_vlan] |= bitmask;
 770                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 771                         state->add_tag |= bitmask;
 772                 } else {
 773                         state->add_tag &= (~bitmask);
 774                 }
 775         }
 776         /*
 777         // no primary vlan id support in swconfig?
 778         // primary vlan will be set to the first non-zero vlan a port is a member of.
 779         for (i = 0; i< state->regs->NUM_PORTS; i++) {
 780                 if (vlan_config->pvid & (1<<i)) {
 781                         state->ports[i].vlan_tag = nr;
 782                 }
 783         }
 784         */
 785
 786         correct_vlan_state(state);
 787         err = update_state(state);
 788
 789         return err;
 790 }
 791
 792 static int ip175c_apply(struct switch_dev *dev)
 793 {
 794         struct ip175c_state *state = dev->priv;
 795         int err;
 796
 797         err = get_flags(state);
 798         if (err < 0)
 799                 return err;
 800
 801         if (REG_SUPP(state->regs->MII_REGISTER_EN)){
 802                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 803                 if (val < 0) {
 804                         return val;
 805                 }
 806                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 807                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 808         }
 809         return 0;
 810 }
 811
 812 static int ip175c_reset(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 813 {
 814         struct ip175c_state *state = dev->priv;
 815         int i, err;
 816
 817         err = get_flags(state);
 818         if (err < 0)
 819                 return err;
 820
 821         if (REG_SUPP(state->regs->RESET_REG)) {
 822                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 823                 if (err < 0)
 824                         return err;
 825                 err = getPhy(state, state->regs->RESET_REG);
 826
 827                 /* data sheet specifies reset period is 2 msec
 828                    (don't see any mention of the 2ms delay in the IP178C spec, only
 829                     in IP175C, but it can't hurt.) */
 830                 mdelay(2);
 831         }
 832
 833         if (REG_SUPP(state->regs->MODE_REG)) {
 834                 err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
 835                 if (err < 0)
 836                         return err;
 837                 err = getPhy(state, state->regs->MODE_REG);
 838         }
 839
 840         /* reset switch ports */
 841         for (i = 0; i < 5; i++) {
 842                 err = state->mii_bus->write(state->mii_bus, i,
 843                                          MII_BMCR, BMCR_RESET);
 844                 if (err < 0)
 845                         return err;
 846         }
 847
 848         return 0;
 849 }
 850
 851 /*! get the current register number */
 852 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 853 {
 854         struct ip175c_state *state = dev->priv;
 855         int err;
 856
 857         err = get_state(state);
 858         if (err < 0)
 859                 return err;
 860
 861         if (state->add_tag & (1<<val->port_vlan)) {
 862                 if (state->remove_tag & (1<<val->port_vlan))
 863                         val->value.i = 3; // shouldn't ever happen.
 864                 else
 865                         val->value.i = 1;
 866         } else {
 867                 if (state->remove_tag & (1<<val->port_vlan))
 868                         val->value.i = 0;
 869                 else
 870                         val->value.i = 2;
 871         }
 872         return 0;
 873 }
 874
 875 /*! set a new register address for low level access to registers */
 876 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 877 {
 878         struct ip175c_state *state = dev->priv;
 879         int err;
 880
 881         err = get_state(state);
 882         if (err < 0)
 883                 return err;
 884
 885         state->add_tag &= ~(1<<val->port_vlan);
 886         state->remove_tag &= ~(1<<val->port_vlan);
 887
 888         if (val->value.i == 0)
 889                 state->remove_tag |= (1<<val->port_vlan);
 890         if (val->value.i == 1)
 891                 state->add_tag |= (1<<val->port_vlan);
 892
 893         SET_PORT_BITS(state, state->add_tag,
 894                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 895         SET_PORT_BITS(state, state->remove_tag,
 896                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 897
 898         return err;
 899 }
 900
 901
 902 /* low level /proc procedures */
 903
 904 /*! get the current phy address */
 905 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 906 {
 907         struct ip175c_state *state = dev->priv;
 908
 909         val->value.i = state->proc_mii.p;
 910         return 0;
 911 }
 912
 913 /*! set a new phy address for low level access to registers */
 914 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 915 {
 916         struct ip175c_state *state = dev->priv;
 917         int new_reg = val->value.i;
 918
 919         if (new_reg < 0 || new_reg > 31)
 920                 state->proc_mii.p = (u16)-1;
 921         else
 922                 state->proc_mii.p = (u16)new_reg;
 923         return 0;
 924 }
 925
 926 /*! get the current register number */
 927 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 928 {
 929         struct ip175c_state *state = dev->priv;
 930
 931         val->value.i = state->proc_mii.m;
 932         return 0;
 933 }
 934
 935 /*! set a new register address for low level access to registers */
 936 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 937 {
 938         struct ip175c_state *state = dev->priv;
 939         int new_reg = val->value.i;
 940
 941         if (new_reg < 0 || new_reg > 31)
 942                 state->proc_mii.m = (u16)-1;
 943         else
 944                 state->proc_mii.m = (u16)new_reg;
 945         return 0;
 946 }
 947
 948 /*! get the register content of state->proc_mii */
 949 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 950 {
 951         struct ip175c_state *state = dev->priv;
 952         int retval = -EINVAL;
 953         if (REG_SUPP(state->proc_mii))
 954                 retval = getPhy(state, state->proc_mii);
 955
 956         if (retval < 0) {
 957                 state->proc_errno = retval;
 958                 return retval;
 959         } else {
 960                 state->proc_errno = 0;
 961                 val->value.i = retval;
 962                 return 0;
 963         }
 964 }
 965
 966 /*! write a value to the register defined by phy/reg above */
 967 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 968 {
 969         struct ip175c_state *state = dev->priv;
 970         int myval;
 971
 972         myval = val->value.i;
 973         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
 974                 state->proc_errno = setPhy(state, state->proc_mii, (u16)myval);
 975         } else {
 976                 state->proc_errno = -EINVAL;
 977         }
 978         return state->proc_errno;
 979 }
 980
 981 /*! get the errno of the last read/write of "val" */
 982 static int ip175c_get_errno(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 983 {
 984         struct ip175c_state *state = dev->priv;
 985         val->value.i = state->proc_errno;
 986         return 0;
 987 }
 988
 989 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 990 {
 991         struct ip175c_state *state = dev->priv;
 992         val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
 993         return 0;
 994 }
 995
 996
 997 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 998 {
 999         int nr = val->port_vlan;
1000         struct ip175c_state *state = dev->priv;
1001         struct phy_device *phy;
1002         int ctrl;
1003         int autoneg;
1004         int speed;
1005         if (val->value.i == 100) {
1006                 speed = 1;
1007                 autoneg = 0;
1008         } else if (val->value.i == 10) {
1009                 speed = 0;
1010                 autoneg = 0;
1011         } else {
1012                 autoneg = 1;
1013                 speed = 1;
1014         }
1015
1016         if (nr == state->regs->CPU_PORT) {
1017                 return -EINVAL; // can't set speed for cpu port!
1018         }
1019
1020         if (nr >= dev->ports || nr < 0)
1021                 return -EINVAL;
1022         phy = state->ports[nr].phy;
1023         if (!phy)
1024                 return -EINVAL;
1025
1026         ctrl = phy_read(phy, 0);
1027         if (ctrl < 0)
1028                 return -EIO;
1029
1030         ctrl &= (~(1<<12));
1031         ctrl &= (~(1<<13));
1032         ctrl |= (autoneg<<12);
1033         ctrl |= (speed<<13);
1034
1035         return phy_write(phy, 0, ctrl);
1036 }
1037
1038 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1039 {
1040         int nr = val->port_vlan;
1041         struct ip175c_state *state = dev->priv;
1042         struct phy_device *phy;
1043         int speed, status;
1044
1045         if (nr == state->regs->CPU_PORT) {
1046                 val->value.i = 100;
1047                 return 0;
1048         }
1049
1050         if (nr >= dev->ports || nr < 0)
1051                 return -EINVAL;
1052         phy = state->ports[nr].phy;
1053         if (!phy)
1054                 return -EINVAL;
1055
1056         status = phy_read(phy, 1);
1057         speed = phy_read(phy, 18);
1058         if (status < 0 || speed < 0)
1059                 return -EIO;
1060
1061         if (status & 4)
1062                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1063         else
1064                 val->value.i = 0;
1065
1066         return 0;
1067 }
1068
1069
1070 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1071 {
1072         int nr = val->port_vlan;
1073         struct ip175c_state *state = dev->priv;
1074         struct phy_device *phy;
1075         int ctrl, speed, status;
1076         int len;
1077         char *buf = state->buf; // fixed-length at 80.
1078
1079         if (nr == state->regs->CPU_PORT) {
1080                 sprintf(buf, "up, 100 Mbps, cpu port");
1081                 val->value.s = buf;
1082                 return 0;
1083         }
1084
1085         if (nr >= dev->ports || nr < 0)
1086                 return -EINVAL;
1087         phy = state->ports[nr].phy;
1088         if (!phy)
1089                 return -EINVAL;
1090
1091         ctrl = phy_read(phy, 0);
1092         status = phy_read(phy, 1);
1093         speed = phy_read(phy, 18);
1094         if (ctrl < 0 || status < 0 || speed < 0)
1095                 return -EIO;
1096
1097         if (status & 4)
1098                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1099                         ((speed & (1<<11)) ? 100 : 10),
1100                         ((speed & (1<<10)) ? "full" : "half"));
1101         else
1102                 len = sprintf(buf, "down");
1103
1104         if (ctrl & (1<<12)) {
1105                 len += sprintf(buf+len, ", auto-negotiate");
1106                 if (!(status & (1<<5)))
1107                         len += sprintf(buf+len, " (in progress)");
1108         } else {
1109                 len += sprintf(buf+len, ", fixed speed (%d)",
1110                         ((ctrl & (1<<13)) ? 100 : 10));
1111         }
1112
1113         buf[len] = '\0';
1114         val->value.s = buf;
1115         return 0;
1116 }
1117
1118 enum Ports {
1119         IP175C_PORT_STATUS,
1120         IP175C_PORT_LINK,
1121         IP175C_PORT_TAGGED,
1122 };
1123
1124 enum Globals {
1125         IP175C_RESET,
1126         IP175C_ENABLE_VLAN,
1127         IP175C_GET_NAME,
1128         IP175C_REGISTER_PHY,
1129         IP175C_REGISTER_MII,
1130         IP175C_REGISTER_VALUE,
1131         IP175C_REGISTER_ERRNO,
1132 };
1133
1134 static const struct switch_attr ip175c_global[] = {
1135         [IP175C_RESET] = {
1136                 .id = IP175C_RESET,
1137                 .type = SWITCH_TYPE_NOVAL,
1138                 .name  = "reset",
1139                 .get = NULL,
1140                 .description = "Resets the switch but does not clear vlan configuration",
1141                 .set = ip175c_reset,
1142         },
1143         [IP175C_ENABLE_VLAN] = {
1144                 .id = IP175C_ENABLE_VLAN,
1145                 .type = SWITCH_TYPE_INT,
1146                 .name  = "enable_vlan",
1147                 .description = "Flag to enable or disable VLANs and tagging",
1148                 .get  = ip175c_get_enable_vlan,
1149                 .set = ip175c_set_enable_vlan,
1150         },
1151         [IP175C_GET_NAME] = {
1152                 .id = IP175C_GET_NAME,
1153                 .type = SWITCH_TYPE_STRING,
1154                 .description = "Returns the type of IC+ chip.",
1155                 .name  = "name",
1156                 .get  = ip175c_read_name,
1157                 .set = NULL,
1158         },
1159         /* jal: added for low level debugging etc. */
1160         [IP175C_REGISTER_PHY] = {
1161                 .id = IP175C_REGISTER_PHY,
1162                 .type = SWITCH_TYPE_INT,
1163                 .description = "Direct register access: set phy (0-4, or 29,30,31)",
1164                 .name  = "phy",
1165                 .get  = ip175c_get_phy,
1166                 .set = ip175c_set_phy,
1167         },
1168         [IP175C_REGISTER_MII] = {
1169                 .id = IP175C_REGISTER_MII,
1170                 .type = SWITCH_TYPE_INT,
1171                 .description = "Direct register access: set mii number (0-31)",
1172                 .name  = "reg",
1173                 .get  = ip175c_get_reg,
1174                 .set = ip175c_set_reg,
1175         },
1176         [IP175C_REGISTER_VALUE] = {
1177                 .id = IP175C_REGISTER_VALUE,
1178                 .type = SWITCH_TYPE_INT,
1179                 .description = "Direct register access: read/write to register (0-65535)",
1180                 .name  = "val",
1181                 .get  = ip175c_get_val,
1182                 .set = ip175c_set_val,
1183         },
1184         [IP175C_REGISTER_ERRNO] = {
1185                 .id = IP175C_REGISTER_ERRNO,
1186                 .type = SWITCH_TYPE_INT,
1187                 .description = "Direct register access: returns last read or write error",
1188                 .name  = "errno",
1189                 .get  = ip175c_get_errno,
1190                 .set = NULL,
1191         },
1192
1193 };
1194
1195 static const struct switch_attr ip175c_vlan[] = {
1196 };
1197
1198 static const struct switch_attr ip175c_port[] = {
1199         [IP175C_PORT_STATUS] = {
1200                 .id = IP175C_PORT_STATUS,
1201                 .type = SWITCH_TYPE_STRING,
1202                 .description = "Returns Detailed port status",
1203                 .name  = "status",
1204                 .get  = ip175c_get_port_status,
1205                 .set = NULL,
1206         },
1207         [IP175C_PORT_LINK] = {
1208                 .id = IP175C_PORT_LINK,
1209                 .type = SWITCH_TYPE_INT,
1210                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1211                 .name  = "link",
1212                 .get  = ip175c_get_port_speed,
1213                 .set = ip175c_set_port_speed,
1214         },
1215         [IP175C_PORT_TAGGED] = {
1216                 .id = IP175C_PORT_LINK,
1217                 .type = SWITCH_TYPE_INT,
1218                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1219                 .name  = "tagged",
1220                 .get  = ip175c_get_tagged,
1221                 .set = ip175c_set_tagged,
1222         },
1223 };
1224
1225 static int ip175c_probe(struct phy_device *pdev)
1226 {
1227         struct ip175c_state *state;
1228         struct switch_dev *dev;
1229         int err;
1230
1231         /* we only attach to PHY 0, but use all available PHYs */
1232         if (pdev->addr != 0)
1233                 return -ENODEV;
1234
1235         state = kzalloc(sizeof(*state), GFP_KERNEL);
1236         if (!state)
1237                 return -ENOMEM;
1238
1239         dev = &state->dev;
1240         dev->attr_global.attr = ip175c_global;
1241         dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1242         dev->attr_port.attr = ip175c_port;
1243         dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1244         dev->attr_vlan.attr = ip175c_vlan;
1245         dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1246
1247         dev->get_vlan_ports = ip175c_get_ports;
1248         dev->set_vlan_ports = ip175c_set_ports;
1249         dev->apply_config = ip175c_apply;
1250
1251         dev->priv = state;
1252         pdev->priv = state;
1253         state->mii_bus = pdev->bus;
1254
1255         err = get_model(state);
1256         if (err < 0)
1257                 goto error;
1258
1259         dev->vlans = MAX_VLANS;
1260         dev->cpu_port = state->regs->CPU_PORT;
1261         dev->ports = state->regs->NUM_PORTS;
1262         dev->name = state->regs->NAME;
1263
1264         return 0;
1265
1266 error:
1267         kfree(state);
1268         return err;
1269 }
1270
1271 static int ip175c_config_init(struct phy_device *pdev)
1272 {
1273         struct ip175c_state *state = pdev->priv;
1274         struct net_device *dev = pdev->attached_dev;
1275         int err;
1276
1277         pdev->irq = PHY_IGNORE_INTERRUPT;
1278         err = register_switch(&state->dev, dev);
1279         if (err < 0)
1280                 return err;
1281
1282         ip175c_reset(&state->dev, NULL, NULL);
1283
1284         state->registered = true;
1285         netif_carrier_on(pdev->attached_dev);
1286
1287         return 0;
1288 }
1289
1290 static void ip175c_remove(struct phy_device *pdev)
1291 {
1292         struct ip175c_state *state = pdev->priv;
1293
1294         if (state->registered)
1295                 unregister_switch(&state->dev);
1296         kfree(state);
1297 }
1298
1299 static int ip175c_config_aneg(struct phy_device *pdev)
1300 {
1301         return 0;
1302 }
1303
1304 static int ip175c_read_status(struct phy_device *pdev)
1305 {
1306         pdev->speed = SPEED_100;
1307         pdev->duplex = DUPLEX_FULL;
1308         pdev->pause = pdev->asym_pause = 0;
1309         return 0;
1310 }
1311
1312 static struct phy_driver ip175c_driver = {
1313         .name           = "IC+ IP175C",
1314         .phy_id         = 0x02430d80,
1315         .phy_id_mask    = 0x0ffffff0,
1316         .features       = PHY_BASIC_FEATURES,
1317         .probe          = ip175c_probe,
1318         .remove         = ip175c_remove,
1319         .config_init    = ip175c_config_init,
1320         .config_aneg    = ip175c_config_aneg,
1321         .read_status    = ip175c_read_status,
1322         .driver         = { .owner = THIS_MODULE },
1323 };
1324
1325
1326 int __init ip175c_init(void)
1327 {
1328         return phy_driver_register(&ip175c_driver);
1329 }
1330
1331 void __exit ip175c_exit(void)
1332 {
1333         phy_driver_unregister(&ip175c_driver);
1334 }
1335
1336 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1337 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1338 MODULE_LICENSE("GPL");
1339
1340 module_init(ip175c_init);
1341 module_exit(ip175c_exit);
1342