target/linux/generic/files/drivers/net/phy/ip17xx.c

   1 /*
   2  * ip17xx.c: Swconfig configuration for IC+ IP17xx switch family
   3  *
   4  * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
   5  * Copyright (C) 2008, 2010 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 #include <linux/device.h>
  29
  30 #define MAX_VLANS 16
  31 #define MAX_PORTS 9
  32 #undef DUMP_MII_IO
  33
  34 typedef struct ip17xx_reg {
  35         u16 p;                  // phy
  36         u16 m;                  // mii
  37 } reg;
  38 typedef char bitnum;
  39
  40 #define NOTSUPPORTED {-1,-1}
  41
  42 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
  43
  44 struct ip17xx_state;
  45
  46 /*********** CONSTANTS ***********/
  47 struct register_mappings {
  48         char *NAME;
  49         u16 MODEL_NO;                   // Compare to bits 4-9 of MII register 0,3.
  50         bitnum NUM_PORTS;
  51         bitnum CPU_PORT;
  52
  53 /* The default VLAN for each port.
  54          Default: 0x0001 for Ports 0,1,2,3
  55                   0x0002 for Ports 4,5 */
  56         reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
  57
  58 /* These ports are tagged.
  59          Default: 0x00 */
  60         reg ADD_TAG_REG;
  61         reg REMOVE_TAG_REG;
  62         bitnum ADD_TAG_BIT[MAX_PORTS];
  63 /* These ports are untagged.
  64          Default: 0x00 (i.e. do not alter any VLAN tags...)
  65          Maybe set to 0 if user disables VLANs. */
  66         bitnum REMOVE_TAG_BIT[MAX_PORTS];
  67
  68 /* Port M and Port N are on the same VLAN.
  69          Default: All ports on all VLANs. */
  70 // Use register {29, 19+N/2}
  71         reg VLAN_LOOKUP_REG;
  72 // Port 5 uses register {30, 18} but same as odd bits.
  73         reg VLAN_LOOKUP_REG_5;          // in a different register on IP175C.
  74         bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
  75         bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
  76
  77 /* This VLAN corresponds to which ports.
  78          Default: 0x2f,0x30,0x3f,0x3f... */
  79         reg TAG_VLAN_MASK_REG;
  80         bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
  81         bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
  82
  83         int RESET_VAL;
  84         reg RESET_REG;
  85
  86         reg MODE_REG;
  87         int MODE_VAL;
  88
  89 /* General flags */
  90         reg ROUTER_CONTROL_REG;
  91         reg VLAN_CONTROL_REG;
  92         bitnum TAG_VLAN_BIT;
  93         bitnum ROUTER_EN_BIT;
  94         bitnum NUMLAN_GROUPS_MAX;
  95         bitnum NUMLAN_GROUPS_BIT;
  96
  97         reg MII_REGISTER_EN;
  98         bitnum MII_REGISTER_EN_BIT;
  99
 100         // set to 1 for 178C, 0 for 175C.
 101         bitnum SIMPLE_VLAN_REGISTERS;   // 175C has two vlans per register but 178C has only one.
 102
 103         // Pointers to functions which manipulate hardware state
 104         int (*update_state)(struct ip17xx_state *state);
 105         int (*set_vlan_mode)(struct ip17xx_state *state);
 106         int (*reset)(struct ip17xx_state *state);
 107 };
 108
 109 static int ip175c_update_state(struct ip17xx_state *state);
 110 static int ip175c_set_vlan_mode(struct ip17xx_state *state);
 111 static int ip175c_reset(struct ip17xx_state *state);
 112
 113 static const struct register_mappings IP178C = {
 114         .NAME = "IP178C",
 115         .MODEL_NO = 0x18,
 116         .VLAN_DEFAULT_TAG_REG = {
 117                 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
 118                 {30,9},{30,10},{30,11},
 119         },
 120
 121         .ADD_TAG_REG = {30,12},
 122         .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
 123         .REMOVE_TAG_REG = {30,13},
 124         .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
 125
 126         .SIMPLE_VLAN_REGISTERS = 1,
 127
 128         .VLAN_LOOKUP_REG = {31,0},// +N
 129         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
 130         .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 131         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 132
 133         .TAG_VLAN_MASK_REG = {30,14}, // +N
 134         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
 135         .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 136
 137         .RESET_VAL = 0x55AA,
 138         .RESET_REG = {30,0},
 139         .MODE_VAL = 0,
 140         .MODE_REG = NOTSUPPORTED,
 141
 142         .ROUTER_CONTROL_REG = {30,30},
 143         .ROUTER_EN_BIT = 11,
 144         .NUMLAN_GROUPS_MAX = 8,
 145         .NUMLAN_GROUPS_BIT = 8, // {0-2}
 146
 147         .VLAN_CONTROL_REG = {30,13},
 148         .TAG_VLAN_BIT = 3,
 149
 150         .CPU_PORT = 8,
 151         .NUM_PORTS = 9,
 152
 153         .MII_REGISTER_EN = NOTSUPPORTED,
 154
 155         .update_state = ip175c_update_state,
 156         .set_vlan_mode = ip175c_set_vlan_mode,
 157         .reset = ip175c_reset,
 158 };
 159
 160 static const struct register_mappings IP175C = {
 161         .NAME = "IP175C",
 162         .MODEL_NO = 0x18,
 163         .VLAN_DEFAULT_TAG_REG = {
 164                 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
 165                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 166         },
 167
 168         .ADD_TAG_REG = {29,23},
 169         .REMOVE_TAG_REG = {29,23},
 170         .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
 171         .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
 172
 173         .SIMPLE_VLAN_REGISTERS = 0,
 174
 175         .VLAN_LOOKUP_REG = {29,19},// +N/2
 176         .VLAN_LOOKUP_REG_5 = {30,18},
 177         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
 178         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
 179
 180         .TAG_VLAN_MASK_REG = {30,1}, // +N/2
 181         .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
 182         .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
 183
 184         .RESET_VAL = 0x175C,
 185         .RESET_REG = {30,0},
 186         .MODE_VAL = 0x175C,
 187         .MODE_REG = {29,31},
 188
 189         .ROUTER_CONTROL_REG = {30,9},
 190         .ROUTER_EN_BIT = 3,
 191         .NUMLAN_GROUPS_MAX = 8,
 192         .NUMLAN_GROUPS_BIT = 0, // {0-2}
 193
 194         .VLAN_CONTROL_REG = {30,9},
 195         .TAG_VLAN_BIT = 7,
 196
 197         .NUM_PORTS = 6,
 198         .CPU_PORT = 5,
 199
 200         .MII_REGISTER_EN = NOTSUPPORTED,
 201
 202         .update_state = ip175c_update_state,
 203         .set_vlan_mode = ip175c_set_vlan_mode,
 204         .reset = ip175c_reset,
 205 };
 206
 207 static const struct register_mappings IP175A = {
 208         .NAME = "IP175A",
 209         .MODEL_NO = 0x05,
 210         .VLAN_DEFAULT_TAG_REG = {
 211                 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
 212                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
 213         },
 214
 215         .ADD_TAG_REG = {0,23},
 216         .REMOVE_TAG_REG = {0,23},
 217         .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
 218         .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
 219
 220         .SIMPLE_VLAN_REGISTERS = 0,
 221
 222         // Only programmable via EEPROM
 223         .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
 224         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
 225         .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
 226         .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
 227
 228         .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
 229         .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 230         .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 231
 232         .RESET_VAL = -1,
 233         .RESET_REG = NOTSUPPORTED,
 234         .MODE_VAL = 0,
 235         .MODE_REG = NOTSUPPORTED,
 236
 237         .ROUTER_CONTROL_REG = NOTSUPPORTED,
 238         .VLAN_CONTROL_REG = NOTSUPPORTED,
 239         .TAG_VLAN_BIT = -1,
 240         .ROUTER_EN_BIT = -1,
 241         .NUMLAN_GROUPS_MAX = -1,
 242         .NUMLAN_GROUPS_BIT = -1, // {0-2}
 243
 244         .NUM_PORTS = 5,
 245         .CPU_PORT = 4,
 246
 247         .MII_REGISTER_EN = {0, 18},
 248         .MII_REGISTER_EN_BIT = 7,
 249
 250         .update_state = ip175c_update_state,
 251         .set_vlan_mode = ip175c_set_vlan_mode,
 252         .reset = ip175c_reset,
 253 };
 254
 255
 256 static int ip175d_update_state(struct ip17xx_state *state);
 257 static int ip175d_set_vlan_mode(struct ip17xx_state *state);
 258 static int ip175d_reset(struct ip17xx_state *state);
 259
 260 static const struct register_mappings IP175D = {
 261         .NAME = "IP175D",
 262         .MODEL_NO = 0x18,
 263
 264         // The IP175D has a completely different interface, so we leave most
 265         // of the registers undefined and switch to different code paths.
 266
 267         .VLAN_DEFAULT_TAG_REG = {
 268                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
 269                 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
 270         },
 271
 272         .ADD_TAG_REG = NOTSUPPORTED,
 273         .REMOVE_TAG_REG = NOTSUPPORTED,
 274
 275         .SIMPLE_VLAN_REGISTERS = 0,
 276
 277         .VLAN_LOOKUP_REG = NOTSUPPORTED,
 278         .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
 279         .TAG_VLAN_MASK_REG = NOTSUPPORTED,
 280
 281         .RESET_VAL = 0x175D,
 282         .RESET_REG = {20,2},
 283         .MODE_REG = NOTSUPPORTED,
 284
 285         .ROUTER_CONTROL_REG = NOTSUPPORTED,
 286         .ROUTER_EN_BIT = -1,
 287         .NUMLAN_GROUPS_BIT = -1,
 288
 289         .VLAN_CONTROL_REG = NOTSUPPORTED,
 290         .TAG_VLAN_BIT = -1,
 291
 292         .NUM_PORTS = 6,
 293         .CPU_PORT = 5,
 294
 295         .MII_REGISTER_EN = NOTSUPPORTED,
 296
 297         .update_state = ip175d_update_state,
 298         .set_vlan_mode = ip175d_set_vlan_mode,
 299         .reset = ip175d_reset,
 300 };
 301
 302 struct ip17xx_state {
 303         struct switch_dev dev;
 304         struct mii_bus *mii_bus;
 305         bool registered;
 306
 307         int router_mode;                // ROUTER_EN
 308         int vlan_enabled;               // TAG_VLAN_EN
 309         struct port_state {
 310                 u16 pvid;
 311                 unsigned int shareports;
 312         } ports[MAX_PORTS];
 313         unsigned int add_tag;
 314         unsigned int remove_tag;
 315         int num_vlans;
 316         struct vlan_state {
 317                 unsigned int ports;
 318                 unsigned int tag;       // VLAN tag (IP175D only)
 319         } vlans[MAX_VLANS];
 320         const struct register_mappings *regs;
 321         reg proc_mii;   // phy/reg for the low level register access via swconfig
 322
 323         char buf[80];
 324 };
 325
 326 #define get_state(_dev) container_of((_dev), struct ip17xx_state, dev)
 327
 328 static int ip_phy_read(struct ip17xx_state *state, int port, int reg)
 329 {
 330         int val = mdiobus_read(state->mii_bus, port, reg);
 331         if (val < 0)
 332                 pr_warning("IP17xx: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
 333 #ifdef DUMP_MII_IO
 334         else
 335                 pr_debug("IP17xx: Read MII(%d,%d) -> %04x\n", port, reg, val);
 336 #endif
 337         return val;
 338 }
 339
 340 static int ip_phy_write(struct ip17xx_state *state, int port, int reg, u16 val)
 341 {
 342         int err;
 343
 344 #ifdef DUMP_MII_IO
 345         pr_debug("IP17xx: Write MII(%d,%d) <- %04x\n", port, reg, val);
 346 #endif
 347         err = mdiobus_write(state->mii_bus, port, reg, val);
 348         if (err < 0)
 349                 pr_warning("IP17xx: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
 350         return err;
 351 }
 352
 353 static int ip_phy_write_masked(struct ip17xx_state *state, int port, int reg, unsigned int mask, unsigned int data)
 354 {
 355         int val = ip_phy_read(state, port, reg);
 356         if (val < 0)
 357                 return 0;
 358         return ip_phy_write(state, port, reg, (val & ~mask) | data);
 359 }
 360
 361 static int getPhy(struct ip17xx_state *state, reg mii)
 362 {
 363         if (!REG_SUPP(mii))
 364                 return -EFAULT;
 365         return ip_phy_read(state, mii.p, mii.m);
 366 }
 367
 368 static int setPhy(struct ip17xx_state *state, reg mii, u16 value)
 369 {
 370         int err;
 371
 372         if (!REG_SUPP(mii))
 373                 return -EFAULT;
 374         err = ip_phy_write(state, mii.p, mii.m, value);
 375         if (err < 0)
 376                 return err;
 377         mdelay(2);
 378         getPhy(state, mii);
 379         return 0;
 380 }
 381
 382
 383 /**
 384  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 385  * NOTE: these macros will return if there is an error!
 386  */
 387
 388 #define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
 389         do {                                                    \
 390                 int i, val = getPhy((state), (addr));           \
 391                 if (val < 0)                                    \
 392                         return val;                             \
 393                 (bits) = 0;                                     \
 394                 for (i = 0; i < MAX_PORTS; i++) {               \
 395                         if ((bit_lookup)[i] == -1) continue;    \
 396                         if (val & (1<<(bit_lookup)[i]))         \
 397                                 (bits) |= (1<<i);               \
 398                 }                                               \
 399         } while (0)
 400
 401 #define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
 402         do {                                                    \
 403                 int i, val = getPhy((state), (addr));           \
 404                 if (val < 0)                                    \
 405                         return val;                             \
 406                 for (i = 0; i < MAX_PORTS; i++) {               \
 407                         unsigned int newmask = ((bits)&(1<<i)); \
 408                         if ((bit_lookup)[i] == -1) continue;    \
 409                         val &= ~(1<<(bit_lookup)[i]);           \
 410                         val |= ((newmask>>i)<<(bit_lookup)[i]); \
 411                 }                                               \
 412                 val = setPhy((state), (addr), val);             \
 413                 if (val < 0)                                    \
 414                         return val;                             \
 415         } while (0)
 416
 417
 418 static int get_model(struct ip17xx_state *state)
 419 {
 420         int id1, id2;
 421         int oui_id, model_no, rev_no, chip_no;
 422
 423         id1 = ip_phy_read(state, 0, 2);
 424         id2 = ip_phy_read(state, 0, 3);
 425         oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
 426         model_no = (id2 >> 4) & 0x3f;
 427         rev_no = id2 & 0xf;
 428         pr_debug("IP17xx: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
 429
 430         if (oui_id != 0x0090c3)  // No other oui_id should have reached us anyway
 431                 return -ENODEV;
 432
 433         if (model_no == IP175A.MODEL_NO) {
 434                 state->regs = &IP175A;
 435         } else if (model_no == IP175C.MODEL_NO) {
 436                 /*
 437                  *  Several models share the same model_no:
 438                  *  178C has more PHYs, so we try whether the device responds to a read from PHY5
 439                  *  175D has a new chip ID register
 440                  *  175C has neither
 441                  */
 442                 if (ip_phy_read(state, 5, 2) == 0x0243) {
 443                         state->regs = &IP178C;
 444                 } else {
 445                         chip_no = ip_phy_read(state, 20, 0);
 446                         pr_debug("IP17xx: Chip ID register reads %04x\n", chip_no);
 447                         if (chip_no == 0x175d) {
 448                                 state->regs = &IP175D;
 449                         } else {
 450                                 state->regs = &IP175C;
 451                         }
 452                 }
 453         } else {
 454                 pr_warning("IP17xx: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
 455                 return -EPERM;
 456         }
 457         return 0;
 458 }
 459
 460 /*** Low-level functions for the older models ***/
 461
 462 /** Only set vlan and router flags in the switch **/
 463 static int ip175c_set_flags(struct ip17xx_state *state)
 464 {
 465         int val;
 466
 467         if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
 468                 return 0;
 469         }
 470
 471         val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
 472         if (val < 0) {
 473                 return val;
 474         }
 475         if (state->regs->ROUTER_EN_BIT >= 0) {
 476                 if (state->router_mode) {
 477                         val |= (1<<state->regs->ROUTER_EN_BIT);
 478                 } else {
 479                         val &= (~(1<<state->regs->ROUTER_EN_BIT));
 480                 }
 481         }
 482         if (state->regs->TAG_VLAN_BIT >= 0) {
 483                 if (state->vlan_enabled) {
 484                         val |= (1<<state->regs->TAG_VLAN_BIT);
 485                 } else {
 486                         val &= (~(1<<state->regs->TAG_VLAN_BIT));
 487                 }
 488         }
 489         if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
 490                 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
 491                 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
 492                         val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
 493                 } else if (state->num_vlans >= 1) {
 494                         val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
 495                 }
 496         }
 497         return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 498 }
 499
 500 /** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
 501 static int ip175c_set_state(struct ip17xx_state *state)
 502 {
 503         int j;
 504         int i;
 505         SET_PORT_BITS(state, state->add_tag,
 506                                   state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
 507         SET_PORT_BITS(state, state->remove_tag,
 508                                   state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 509
 510         if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
 511                 for (j=0; j<state->regs->NUM_PORTS; j++) {
 512                         reg addr;
 513                         const bitnum *bit_lookup = (j%2==0)?
 514                                 state->regs->VLAN_LOOKUP_EVEN_BIT:
 515                                 state->regs->VLAN_LOOKUP_ODD_BIT;
 516
 517                         addr = state->regs->VLAN_LOOKUP_REG;
 518                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 519                                 addr.m += j;
 520                         } else {
 521                                 switch (j) {
 522                                 case 0:
 523                                 case 1:
 524                                         break;
 525                                 case 2:
 526                                 case 3:
 527                                         addr.m+=1;
 528                                         break;
 529                                 case 4:
 530                                         addr.m+=2;
 531                                         break;
 532                                 case 5:
 533                                         addr = state->regs->VLAN_LOOKUP_REG_5;
 534                                         break;
 535                                 default:
 536                                         addr.m = -1; // shouldn't get here, but...
 537                                         break;
 538                                 }
 539                         }
 540                         //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
 541                         if (REG_SUPP(addr)) {
 542                                 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
 543                         }
 544                 }
 545         }
 546         if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
 547                 for (j=0; j<MAX_VLANS; j++) {
 548                         reg addr = state->regs->TAG_VLAN_MASK_REG;
 549                         const bitnum *bit_lookup = (j%2==0)?
 550                                 state->regs->TAG_VLAN_MASK_EVEN_BIT:
 551                                 state->regs->TAG_VLAN_MASK_ODD_BIT;
 552                         unsigned int vlan_mask;
 553                         if (state->regs->SIMPLE_VLAN_REGISTERS) {
 554                                 addr.m += j;
 555                         } else {
 556                                 addr.m += j/2;
 557                         }
 558                         vlan_mask = state->vlans[j].ports;
 559                         SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
 560                 }
 561         }
 562
 563         for (i=0; i<MAX_PORTS; i++) {
 564                 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
 565                         int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
 566                                         state->ports[i].pvid);
 567                         if (err < 0) {
 568                                 return err;
 569                         }
 570                 }
 571         }
 572
 573         return ip175c_set_flags(state);
 574 }
 575
 576 /**
 577  *  Uses only the VLAN port mask and the add tag mask to generate the other fields:
 578  *  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 579  */
 580 static void ip175c_correct_vlan_state(struct ip17xx_state *state)
 581 {
 582         int i, j;
 583         state->num_vlans = 0;
 584         for (i=0; i<MAX_VLANS; i++) {
 585                 if (state->vlans[i].ports != 0) {
 586                         state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
 587                 }
 588         }
 589
 590         for (i=0; i<state->regs->NUM_PORTS; i++) {
 591                 unsigned int portmask = (1<<i);
 592                 if (!state->vlan_enabled) {
 593                         // Share with everybody!
 594                         state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
 595                         continue;
 596                 }
 597                 state->ports[i].shareports = portmask;
 598                 for (j=0; j<MAX_VLANS; j++) {
 599                         if (state->vlans[j].ports & portmask)
 600                                 state->ports[i].shareports |= state->vlans[j].ports;
 601                 }
 602         }
 603 }
 604
 605 static int ip175c_update_state(struct ip17xx_state *state)
 606 {
 607         ip175c_correct_vlan_state(state);
 608         return ip175c_set_state(state);
 609 }
 610
 611 static int ip175c_set_vlan_mode(struct ip17xx_state *state)
 612 {
 613         return ip175c_update_state(state);
 614 }
 615
 616 static int ip175c_reset(struct ip17xx_state *state)
 617 {
 618         int err;
 619
 620         if (REG_SUPP(state->regs->MODE_REG)) {
 621                 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
 622                 if (err < 0)
 623                         return err;
 624                 err = getPhy(state, state->regs->MODE_REG);
 625                 if (err < 0)
 626                         return err;
 627         }
 628
 629         return ip175c_update_state(state);
 630 }
 631
 632 /*** Low-level functions for IP175D ***/
 633
 634 static int ip175d_update_state(struct ip17xx_state *state)
 635 {
 636         unsigned int filter_mask = 0;
 637         unsigned int ports[16], add[16], rem[16];
 638         int i, j;
 639         int err = 0;
 640
 641         for (i = 0; i < 16; i++) {
 642                 ports[i] = 0;
 643                 add[i] = 0;
 644                 rem[i] = 0;
 645                 if (!state->vlan_enabled) {
 646                         err |= ip_phy_write(state, 22, 14+i, i+1);      // default tags
 647                         ports[i] = 0x3f;
 648                         continue;
 649                 }
 650                 if (!state->vlans[i].tag) {
 651                         // Reset the filter
 652                         err |= ip_phy_write(state, 22, 14+i, 0);        // tag
 653                         continue;
 654                 }
 655                 filter_mask |= 1 << i;
 656                 err |= ip_phy_write(state, 22, 14+i, state->vlans[i].tag);
 657                 ports[i] = state->vlans[i].ports;
 658                 for (j = 0; j < 6; j++) {
 659                         if (ports[i] & (1 << j)) {
 660                                 if (state->add_tag & (1 << j))
 661                                         add[i] |= 1 << j;
 662                                 if (state->remove_tag & (1 << j))
 663                                         rem[i] |= 1 << j;
 664                         }
 665                 }
 666         }
 667
 668         // Port masks, tag adds and removals
 669         for (i = 0; i < 8; i++) {
 670                 err |= ip_phy_write(state, 23, i, ports[2*i] | (ports[2*i+1] << 8));
 671                 err |= ip_phy_write(state, 23, 8+i, add[2*i] | (add[2*i+1] << 8));
 672                 err |= ip_phy_write(state, 23, 16+i, rem[2*i] | (rem[2*i+1] << 8));
 673         }
 674         err |= ip_phy_write(state, 22, 10, filter_mask);
 675
 676         // Default VLAN tag for each port
 677         for (i = 0; i < 6; i++)
 678                 err |= ip_phy_write(state, 22, 4+i, state->vlans[state->ports[i].pvid].tag);
 679
 680         return (err ? -EIO : 0);
 681 }
 682
 683 static int ip175d_set_vlan_mode(struct ip17xx_state *state)
 684 {
 685         int i;
 686         int err = 0;
 687
 688         if (state->vlan_enabled) {
 689                 // VLAN classification rules: tag-based VLANs, use VID to classify,
 690                 // drop packets that cannot be classified.
 691                 err |= ip_phy_write_masked(state, 22, 0, 0x3fff, 0x003f);
 692
 693                 // Ingress rules: CFI=1 dropped, null VID is untagged, VID=1 passed,
 694                 // VID=0xfff discarded, admin both tagged and untagged, ingress
 695                 // filters enabled.
 696                 err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
 697
 698                 // Egress rules: IGMP processing off, keep VLAN header off
 699                 err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
 700         } else {
 701                 // VLAN classification rules: everything off & clear table
 702                 err |= ip_phy_write_masked(state, 22, 0, 0xbfff, 0x8000);
 703
 704                 // Ingress and egress rules: set to defaults
 705                 err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
 706                 err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
 707         }
 708
 709         // Reset default VLAN for each port to 0
 710         for (i = 0; i < 6; i++)
 711                 state->ports[i].pvid = 0;
 712
 713         err |= ip175d_update_state(state);
 714
 715         return (err ? -EIO : 0);
 716 }
 717
 718 static int ip175d_reset(struct ip17xx_state *state)
 719 {
 720         int err = 0;
 721
 722         // Disable the special tagging mode
 723         err |= ip_phy_write_masked(state, 21, 22, 0x0003, 0x0000);
 724
 725         // Set 802.1q protocol type
 726         err |= ip_phy_write(state, 22, 3, 0x8100);
 727
 728         state->vlan_enabled = 0;
 729         err |= ip175d_set_vlan_mode(state);
 730
 731         return (err ? -EIO : 0);
 732 }
 733
 734 /*** High-level functions ***/
 735
 736 static int ip17xx_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 737 {
 738         struct ip17xx_state *state = get_state(dev);
 739
 740         val->value.i = state->vlan_enabled;
 741         return 0;
 742 }
 743
 744 static void ip17xx_reset_vlan_config(struct ip17xx_state *state)
 745 {
 746         int i;
 747
 748         state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
 749         state->add_tag = 0x0000;
 750         for (i = 0; i < MAX_VLANS; i++) {
 751                 state->vlans[i].ports = 0x0000;
 752                 state->vlans[i].tag = (i ? i : 16);
 753         }
 754         for (i = 0; i < MAX_PORTS; i++)
 755                 state->ports[i].pvid = 0;
 756 }
 757
 758 static int ip17xx_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 759 {
 760         struct ip17xx_state *state = get_state(dev);
 761         int enable;
 762
 763         enable = val->value.i;
 764         if (state->vlan_enabled == enable) {
 765                 // Do not change any state.
 766                 return 0;
 767         }
 768         state->vlan_enabled = enable;
 769
 770         // Otherwise, if we are switching state, set fields to a known default.
 771         ip17xx_reset_vlan_config(state);
 772
 773         return state->regs->set_vlan_mode(state);
 774 }
 775
 776 static int ip17xx_get_ports(struct switch_dev *dev, struct switch_val *val)
 777 {
 778         struct ip17xx_state *state = get_state(dev);
 779         int b;
 780         int ind;
 781         unsigned int ports;
 782
 783         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 784                 return -EINVAL;
 785
 786         ports = state->vlans[val->port_vlan].ports;
 787         b = 0;
 788         ind = 0;
 789         while (b < MAX_PORTS) {
 790                 if (ports&1) {
 791                         int istagged = ((state->add_tag >> b) & 1);
 792                         val->value.ports[ind].id = b;
 793                         val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
 794                         ind++;
 795                 }
 796                 b++;
 797                 ports >>= 1;
 798         }
 799         val->len = ind;
 800
 801         return 0;
 802 }
 803
 804 static int ip17xx_set_ports(struct switch_dev *dev, struct switch_val *val)
 805 {
 806         struct ip17xx_state *state = get_state(dev);
 807         int i;
 808
 809         if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
 810                 return -EINVAL;
 811
 812         state->vlans[val->port_vlan].ports = 0;
 813         for (i = 0; i < val->len; i++) {
 814                 unsigned int bitmask = (1<<val->value.ports[i].id);
 815                 state->vlans[val->port_vlan].ports |= bitmask;
 816                 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
 817                         state->add_tag |= bitmask;
 818                         state->remove_tag &= (~bitmask);
 819                 } else {
 820                         state->add_tag &= (~bitmask);
 821                         state->remove_tag |= bitmask;
 822                 }
 823         }
 824
 825         return state->regs->update_state(state);
 826 }
 827
 828 static int ip17xx_apply(struct switch_dev *dev)
 829 {
 830         struct ip17xx_state *state = get_state(dev);
 831
 832         if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
 833                 int val = getPhy(state, state->regs->MII_REGISTER_EN);
 834                 if (val < 0) {
 835                         return val;
 836                 }
 837                 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
 838                 return setPhy(state, state->regs->MII_REGISTER_EN, val);
 839         }
 840         return 0;
 841 }
 842
 843 static int ip17xx_reset(struct switch_dev *dev)
 844 {
 845         struct ip17xx_state *state = get_state(dev);
 846         int i, err;
 847
 848         if (REG_SUPP(state->regs->RESET_REG)) {
 849                 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
 850                 if (err < 0)
 851                         return err;
 852                 err = getPhy(state, state->regs->RESET_REG);
 853
 854                 /*
 855                  *  Data sheet specifies reset period to be 2 msec.
 856                  *  (I don't see any mention of the 2ms delay in the IP178C spec, only
 857                  *  in IP175C, but it can't hurt.)
 858                  */
 859                 mdelay(2);
 860         }
 861
 862         /* reset switch ports */
 863         for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
 864                 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
 865                 if (err < 0)
 866                         return err;
 867         }
 868
 869         state->router_mode = 0;
 870         state->vlan_enabled = 0;
 871         ip17xx_reset_vlan_config(state);
 872
 873         return state->regs->reset(state);
 874 }
 875
 876 static int ip17xx_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 877 {
 878         struct ip17xx_state *state = get_state(dev);
 879
 880         if (state->add_tag & (1<<val->port_vlan)) {
 881                 if (state->remove_tag & (1<<val->port_vlan))
 882                         val->value.i = 3; // shouldn't ever happen.
 883                 else
 884                         val->value.i = 1;
 885         } else {
 886                 if (state->remove_tag & (1<<val->port_vlan))
 887                         val->value.i = 0;
 888                 else
 889                         val->value.i = 2;
 890         }
 891         return 0;
 892 }
 893
 894 static int ip17xx_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 895 {
 896         struct ip17xx_state *state = get_state(dev);
 897
 898         state->add_tag &= ~(1<<val->port_vlan);
 899         state->remove_tag &= ~(1<<val->port_vlan);
 900
 901         if (val->value.i == 0)
 902                 state->remove_tag |= (1<<val->port_vlan);
 903         if (val->value.i == 1)
 904                 state->add_tag |= (1<<val->port_vlan);
 905
 906         return state->regs->update_state(state);
 907 }
 908
 909 /** Get the current phy address */
 910 static int ip17xx_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 911 {
 912         struct ip17xx_state *state = get_state(dev);
 913
 914         val->value.i = state->proc_mii.p;
 915         return 0;
 916 }
 917
 918 /** Set a new phy address for low level access to registers */
 919 static int ip17xx_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 920 {
 921         struct ip17xx_state *state = get_state(dev);
 922         int new_reg = val->value.i;
 923
 924         if (new_reg < 0 || new_reg > 31)
 925                 state->proc_mii.p = (u16)-1;
 926         else
 927                 state->proc_mii.p = (u16)new_reg;
 928         return 0;
 929 }
 930
 931 /** Get the current register number */
 932 static int ip17xx_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 933 {
 934         struct ip17xx_state *state = get_state(dev);
 935
 936         val->value.i = state->proc_mii.m;
 937         return 0;
 938 }
 939
 940 /** Set a new register address for low level access to registers */
 941 static int ip17xx_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 942 {
 943         struct ip17xx_state *state = get_state(dev);
 944         int new_reg = val->value.i;
 945
 946         if (new_reg < 0 || new_reg > 31)
 947                 state->proc_mii.m = (u16)-1;
 948         else
 949                 state->proc_mii.m = (u16)new_reg;
 950         return 0;
 951 }
 952
 953 /** Get the register content of state->proc_mii */
 954 static int ip17xx_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 955 {
 956         struct ip17xx_state *state = get_state(dev);
 957         int retval = -EINVAL;
 958         if (REG_SUPP(state->proc_mii))
 959                 retval = getPhy(state, state->proc_mii);
 960
 961         if (retval < 0) {
 962                 return retval;
 963         } else {
 964                 val->value.i = retval;
 965                 return 0;
 966         }
 967 }
 968
 969 /** Write a value to the register defined by phy/reg above */
 970 static int ip17xx_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 971 {
 972         struct ip17xx_state *state = get_state(dev);
 973         int myval, err = -EINVAL;
 974
 975         myval = val->value.i;
 976         if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
 977                 err = setPhy(state, state->proc_mii, (u16)myval);
 978         }
 979         return err;
 980 }
 981
 982 static int ip17xx_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 983 {
 984         struct ip17xx_state *state = get_state(dev);
 985         val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
 986         return 0;
 987 }
 988
 989 static int ip17xx_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 990 {
 991         struct ip17xx_state *state = get_state(dev);
 992         int vlan = val->port_vlan;
 993
 994         if (vlan < 0 || vlan >= MAX_VLANS)
 995                 return -EINVAL;
 996
 997         val->value.i = state->vlans[vlan].tag;
 998         return 0;
 999 }
1000
1001 static int ip17xx_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1002 {
1003         struct ip17xx_state *state = get_state(dev);
1004         int vlan = val->port_vlan;
1005         int tag = val->value.i;
1006
1007         if (vlan < 0 || vlan >= MAX_VLANS)
1008                 return -EINVAL;
1009
1010         if (tag < 0 || tag > 4095)
1011                 return -EINVAL;
1012
1013         state->vlans[vlan].tag = tag;
1014         return state->regs->update_state(state);
1015 }
1016
1017 static int ip17xx_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1018 {
1019         struct ip17xx_state *state = get_state(dev);
1020         int nr = val->port_vlan;
1021         int ctrl;
1022         int autoneg;
1023         int speed;
1024         if (val->value.i == 100) {
1025                 speed = 1;
1026                 autoneg = 0;
1027         } else if (val->value.i == 10) {
1028                 speed = 0;
1029                 autoneg = 0;
1030         } else {
1031                 autoneg = 1;
1032                 speed = 1;
1033         }
1034
1035         /* Can't set speed for cpu port */
1036         if (nr == state->regs->CPU_PORT)
1037                 return -EINVAL;
1038
1039         if (nr >= dev->ports || nr < 0)
1040                 return -EINVAL;
1041
1042         ctrl = ip_phy_read(state, nr, 0);
1043         if (ctrl < 0)
1044                 return -EIO;
1045
1046         ctrl &= (~(1<<12));
1047         ctrl &= (~(1<<13));
1048         ctrl |= (autoneg<<12);
1049         ctrl |= (speed<<13);
1050
1051         return ip_phy_write(state, nr, 0, ctrl);
1052 }
1053
1054 static int ip17xx_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1055 {
1056         struct ip17xx_state *state = get_state(dev);
1057         int nr = val->port_vlan;
1058         int speed, status;
1059
1060         if (nr == state->regs->CPU_PORT) {
1061                 val->value.i = 100;
1062                 return 0;
1063         }
1064
1065         if (nr >= dev->ports || nr < 0)
1066                 return -EINVAL;
1067
1068         status = ip_phy_read(state, nr, 1);
1069         speed = ip_phy_read(state, nr, 18);
1070         if (status < 0 || speed < 0)
1071                 return -EIO;
1072
1073         if (status & 4)
1074                 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1075         else
1076                 val->value.i = 0;
1077
1078         return 0;
1079 }
1080
1081 static int ip17xx_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1082 {
1083         struct ip17xx_state *state = get_state(dev);
1084         int ctrl, speed, status;
1085         int nr = val->port_vlan;
1086         int len;
1087         char *buf = state->buf; // fixed-length at 80.
1088
1089         if (nr == state->regs->CPU_PORT) {
1090                 sprintf(buf, "up, 100 Mbps, cpu port");
1091                 val->value.s = buf;
1092                 return 0;
1093         }
1094
1095         if (nr >= dev->ports || nr < 0)
1096                 return -EINVAL;
1097
1098         ctrl = ip_phy_read(state, nr, 0);
1099         status = ip_phy_read(state, nr, 1);
1100         speed = ip_phy_read(state, nr, 18);
1101         if (ctrl < 0 || status < 0 || speed < 0)
1102                 return -EIO;
1103
1104         if (status & 4)
1105                 len = sprintf(buf, "up, %d Mbps, %s duplex",
1106                         ((speed & (1<<11)) ? 100 : 10),
1107                         ((speed & (1<<10)) ? "full" : "half"));
1108         else
1109                 len = sprintf(buf, "down");
1110
1111         if (ctrl & (1<<12)) {
1112                 len += sprintf(buf+len, ", auto-negotiate");
1113                 if (!(status & (1<<5)))
1114                         len += sprintf(buf+len, " (in progress)");
1115         } else {
1116                 len += sprintf(buf+len, ", fixed speed (%d)",
1117                         ((ctrl & (1<<13)) ? 100 : 10));
1118         }
1119
1120         buf[len] = '\0';
1121         val->value.s = buf;
1122         return 0;
1123 }
1124
1125 static int ip17xx_get_pvid(struct switch_dev *dev, int port, int *val)
1126 {
1127         struct ip17xx_state *state = get_state(dev);
1128
1129         *val = state->ports[port].pvid;
1130         return 0;
1131 }
1132
1133 static int ip17xx_set_pvid(struct switch_dev *dev, int port, int val)
1134 {
1135         struct ip17xx_state *state = get_state(dev);
1136
1137         if (val < 0 || val >= MAX_VLANS)
1138                 return -EINVAL;
1139
1140         state->ports[port].pvid = val;
1141         return state->regs->update_state(state);
1142 }
1143
1144
1145 enum Ports {
1146         IP17XX_PORT_STATUS,
1147         IP17XX_PORT_LINK,
1148         IP17XX_PORT_TAGGED,
1149         IP17XX_PORT_PVID,
1150 };
1151
1152 enum Globals {
1153         IP17XX_ENABLE_VLAN,
1154         IP17XX_GET_NAME,
1155         IP17XX_REGISTER_PHY,
1156         IP17XX_REGISTER_MII,
1157         IP17XX_REGISTER_VALUE,
1158         IP17XX_REGISTER_ERRNO,
1159 };
1160
1161 enum Vlans {
1162         IP17XX_VLAN_TAG,
1163 };
1164
1165 static const struct switch_attr ip17xx_global[] = {
1166         [IP17XX_ENABLE_VLAN] = {
1167                 .id = IP17XX_ENABLE_VLAN,
1168                 .type = SWITCH_TYPE_INT,
1169                 .name  = "enable_vlan",
1170                 .description = "Flag to enable or disable VLANs and tagging",
1171                 .get  = ip17xx_get_enable_vlan,
1172                 .set = ip17xx_set_enable_vlan,
1173         },
1174         [IP17XX_GET_NAME] = {
1175                 .id = IP17XX_GET_NAME,
1176                 .type = SWITCH_TYPE_STRING,
1177                 .description = "Returns the type of IC+ chip.",
1178                 .name  = "name",
1179                 .get  = ip17xx_read_name,
1180                 .set = NULL,
1181         },
1182         /* jal: added for low level debugging etc. */
1183         [IP17XX_REGISTER_PHY] = {
1184                 .id = IP17XX_REGISTER_PHY,
1185                 .type = SWITCH_TYPE_INT,
1186                 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1187                 .name  = "phy",
1188                 .get  = ip17xx_get_phy,
1189                 .set = ip17xx_set_phy,
1190         },
1191         [IP17XX_REGISTER_MII] = {
1192                 .id = IP17XX_REGISTER_MII,
1193                 .type = SWITCH_TYPE_INT,
1194                 .description = "Direct register access: set MII register number (0-31)",
1195                 .name  = "reg",
1196                 .get  = ip17xx_get_reg,
1197                 .set = ip17xx_set_reg,
1198         },
1199         [IP17XX_REGISTER_VALUE] = {
1200                 .id = IP17XX_REGISTER_VALUE,
1201                 .type = SWITCH_TYPE_INT,
1202                 .description = "Direct register access: read/write to register (0-65535)",
1203                 .name  = "val",
1204                 .get  = ip17xx_get_val,
1205                 .set = ip17xx_set_val,
1206         },
1207 };
1208
1209 static const struct switch_attr ip17xx_vlan[] = {
1210         [IP17XX_VLAN_TAG] = {
1211                 .id = IP17XX_VLAN_TAG,
1212                 .type = SWITCH_TYPE_INT,
1213                 .description = "VLAN ID (0-4095) [IP175D only]",
1214                 .name = "vid",
1215                 .get = ip17xx_get_tag,
1216                 .set = ip17xx_set_tag,
1217         }
1218 };
1219
1220 static const struct switch_attr ip17xx_port[] = {
1221         [IP17XX_PORT_STATUS] = {
1222                 .id = IP17XX_PORT_STATUS,
1223                 .type = SWITCH_TYPE_STRING,
1224                 .description = "Returns Detailed port status",
1225                 .name  = "status",
1226                 .get  = ip17xx_get_port_status,
1227                 .set = NULL,
1228         },
1229         [IP17XX_PORT_LINK] = {
1230                 .id = IP17XX_PORT_LINK,
1231                 .type = SWITCH_TYPE_INT,
1232                 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1233                 .name  = "link",
1234                 .get  = ip17xx_get_port_speed,
1235                 .set = ip17xx_set_port_speed,
1236         },
1237         [IP17XX_PORT_TAGGED] = {
1238                 .id = IP17XX_PORT_LINK,
1239                 .type = SWITCH_TYPE_INT,
1240                 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1241                 .name  = "tagged",
1242                 .get  = ip17xx_get_tagged,
1243                 .set = ip17xx_set_tagged,
1244         },
1245 };
1246
1247 static const struct switch_dev_ops ip17xx_ops = {
1248         .attr_global = {
1249                 .attr = ip17xx_global,
1250                 .n_attr = ARRAY_SIZE(ip17xx_global),
1251         },
1252         .attr_port = {
1253                 .attr = ip17xx_port,
1254                 .n_attr = ARRAY_SIZE(ip17xx_port),
1255         },
1256         .attr_vlan = {
1257                 .attr = ip17xx_vlan,
1258                 .n_attr = ARRAY_SIZE(ip17xx_vlan),
1259         },
1260
1261         .get_port_pvid = ip17xx_get_pvid,
1262         .set_port_pvid = ip17xx_set_pvid,
1263         .get_vlan_ports = ip17xx_get_ports,
1264         .set_vlan_ports = ip17xx_set_ports,
1265         .apply_config = ip17xx_apply,
1266         .reset_switch = ip17xx_reset,
1267 };
1268
1269 static int ip17xx_probe(struct phy_device *pdev)
1270 {
1271         struct ip17xx_state *state;
1272         struct switch_dev *dev;
1273         int err;
1274
1275         /* We only attach to PHY 0, but use all available PHYs */
1276         if (pdev->addr != 0)
1277                 return -ENODEV;
1278
1279         state = kzalloc(sizeof(*state), GFP_KERNEL);
1280         if (!state)
1281                 return -ENOMEM;
1282
1283         dev = &state->dev;
1284
1285         pdev->priv = state;
1286         state->mii_bus = pdev->bus;
1287
1288         err = get_model(state);
1289         if (err < 0)
1290                 goto error;
1291
1292         dev->vlans = MAX_VLANS;
1293         dev->cpu_port = state->regs->CPU_PORT;
1294         dev->ports = state->regs->NUM_PORTS;
1295         dev->name = state->regs->NAME;
1296         dev->ops = &ip17xx_ops;
1297
1298         pr_info("IP17xx: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
1299         return 0;
1300
1301 error:
1302         kfree(state);
1303         return err;
1304 }
1305
1306 static int ip17xx_config_init(struct phy_device *pdev)
1307 {
1308         struct ip17xx_state *state = pdev->priv;
1309         struct net_device *dev = pdev->attached_dev;
1310         int err;
1311
1312         err = register_switch(&state->dev, dev);
1313         if (err < 0)
1314                 return err;
1315
1316         state->registered = true;
1317         ip17xx_reset(&state->dev);
1318         return 0;
1319 }
1320
1321 static void ip17xx_remove(struct phy_device *pdev)
1322 {
1323         struct ip17xx_state *state = pdev->priv;
1324
1325         if (state->registered)
1326                 unregister_switch(&state->dev);
1327         kfree(state);
1328 }
1329
1330 static int ip17xx_config_aneg(struct phy_device *pdev)
1331 {
1332         return 0;
1333 }
1334
1335 static int ip17xx_aneg_done(struct phy_device *pdev)
1336 {
1337         return BMSR_ANEGCOMPLETE;
1338 }
1339
1340 static int ip17xx_update_link(struct phy_device *pdev)
1341 {
1342         pdev->link = 1;
1343         return 0;
1344 }
1345
1346 static int ip17xx_read_status(struct phy_device *pdev)
1347 {
1348         pdev->speed = SPEED_100;
1349         pdev->duplex = DUPLEX_FULL;
1350         pdev->pause = pdev->asym_pause = 0;
1351         pdev->link = 1;
1352
1353         return 0;
1354 }
1355
1356 static struct phy_driver ip17xx_driver = {
1357         .name           = "IC+ IP17xx",
1358         .phy_id         = 0x02430c00,
1359         .phy_id_mask    = 0x0ffffc00,
1360         .features       = PHY_BASIC_FEATURES,
1361         .probe          = ip17xx_probe,
1362         .remove         = ip17xx_remove,
1363         .config_init    = ip17xx_config_init,
1364         .config_aneg    = ip17xx_config_aneg,
1365         .aneg_done      = ip17xx_aneg_done,
1366         .update_link    = ip17xx_update_link,
1367         .read_status    = ip17xx_read_status,
1368         .driver         = { .owner = THIS_MODULE },
1369 };
1370
1371 static struct phy_driver ip175a_driver = {
1372         .name           = "IC+ IP175A",
1373         .phy_id         = 0x02430c50,
1374         .phy_id_mask    = 0x0ffffff0,
1375         .features       = PHY_BASIC_FEATURES,
1376         .probe          = ip17xx_probe,
1377         .remove         = ip17xx_remove,
1378         .config_init    = ip17xx_config_init,
1379         .config_aneg    = ip17xx_config_aneg,
1380         .aneg_done      = ip17xx_aneg_done,
1381         .update_link    = ip17xx_update_link,
1382         .read_status    = ip17xx_read_status,
1383         .driver         = { .owner = THIS_MODULE },
1384 };
1385
1386
1387 int __init ip17xx_init(void)
1388 {
1389         int ret;
1390
1391         ret = phy_driver_register(&ip175a_driver);
1392         if (ret < 0)
1393                 return ret;
1394
1395         return phy_driver_register(&ip17xx_driver);
1396 }
1397
1398 void __exit ip17xx_exit(void)
1399 {
1400         phy_driver_unregister(&ip17xx_driver);
1401         phy_driver_unregister(&ip175a_driver);
1402 }
1403
1404 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1405 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1406 MODULE_AUTHOR("Martin Mares <mj@ucw.cz>");
1407 MODULE_LICENSE("GPL");
1408
1409 module_init(ip17xx_init);
1410 module_exit(ip17xx_exit);