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