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