target/linux/generic-2.6/files/drivers/net/phy/ar8216.c

   1 /*
   2  * ar8216.c: AR8216 switch driver
   3  *
   4  * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/if.h>
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/list.h>
  21 #include <linux/if_ether.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/netlink.h>
  25 #include <linux/bitops.h>
  26 #include <net/genetlink.h>
  27 #include <linux/switch.h>
  28 #include <linux/delay.h>
  29 #include <linux/phy.h>
  30 #include <linux/netdevice.h>
  31 #include <linux/etherdevice.h>
  32 #include "ar8216.h"
  33
  34 /* size of the vlan table */
  35 #define AR8X16_MAX_VLANS        128
  36
  37 struct ar8216_priv {
  38         struct switch_dev dev;
  39         struct phy_device *phy;
  40         u32 (*read)(struct ar8216_priv *priv, int reg);
  41         void (*write)(struct ar8216_priv *priv, int reg, u32 val);
  42         const struct net_device_ops *ndo_old;
  43         struct net_device_ops ndo;
  44         struct mutex reg_mutex;
  45         int chip;
  46
  47         /* all fields below are cleared on reset */
  48         bool vlan;
  49         u16 vlan_id[AR8X16_MAX_VLANS];
  50         u8 vlan_table[AR8X16_MAX_VLANS];
  51         u8 vlan_tagged;
  52         u16 pvid[AR8216_NUM_PORTS];
  53 };
  54 static struct switch_dev athdev;
  55
  56 #define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev)
  57
  58 static inline void
  59 split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
  60 {
  61         regaddr >>= 1;
  62         *r1 = regaddr & 0x1e;
  63
  64         regaddr >>= 5;
  65         *r2 = regaddr & 0x7;
  66
  67         regaddr >>= 3;
  68         *page = regaddr & 0x1ff;
  69 }
  70
  71 static u32
  72 ar8216_mii_read(struct ar8216_priv *priv, int reg)
  73 {
  74         struct phy_device *phy = priv->phy;
  75         u16 r1, r2, page;
  76         u16 lo, hi;
  77
  78         split_addr((u32) reg, &r1, &r2, &page);
  79         phy->bus->write(phy->bus, 0x18, 0, page);
  80         msleep(1); /* wait for the page switch to propagate */
  81         lo = phy->bus->read(phy->bus, 0x10 | r2, r1);
  82         hi = phy->bus->read(phy->bus, 0x10 | r2, r1 + 1);
  83
  84         return (hi << 16) | lo;
  85 }
  86
  87 static void
  88 ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val)
  89 {
  90         struct phy_device *phy = priv->phy;
  91         u16 r1, r2, r3;
  92         u16 lo, hi;
  93
  94         split_addr((u32) reg, &r1, &r2, &r3);
  95         phy->bus->write(phy->bus, 0x18, 0, r3);
  96         msleep(1); /* wait for the page switch to propagate */
  97
  98         lo = val & 0xffff;
  99         hi = (u16) (val >> 16);
 100         phy->bus->write(phy->bus, 0x10 | r2, r1 + 1, hi);
 101         phy->bus->write(phy->bus, 0x10 | r2, r1, lo);
 102 }
 103
 104 static u32
 105 ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
 106 {
 107         u32 v;
 108
 109         v = priv->read(priv, reg);
 110         v &= ~mask;
 111         v |= val;
 112         priv->write(priv, reg, v);
 113
 114         return v;
 115 }
 116
 117 static inline int
 118 ar8216_id_chip(struct ar8216_priv *priv)
 119 {
 120         u32 val;
 121         u16 id;
 122         val = ar8216_mii_read(priv, AR8216_REG_CTRL);
 123         id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 124         switch (id) {
 125         case 0x0101:
 126                 return AR8216;
 127         case 0x1001:
 128                 return AR8316;
 129         default:
 130                 printk(KERN_ERR
 131                         "ar8216: Unknown Atheros device [ver=%d, rev=%d, phy_id=%04x%04x]\n",
 132                         (int)(val >> AR8216_CTRL_VERSION_S),
 133                         (int)(val & AR8216_CTRL_REVISION),
 134                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 2),
 135                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 3));
 136
 137                 return UNKNOWN;
 138         }
 139 }
 140
 141 static int
 142 ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 143                 struct switch_val *val)
 144 {
 145         struct ar8216_priv *priv = to_ar8216(dev);
 146         priv->vlan = !!val->value.i;
 147         return 0;
 148 }
 149
 150 static int
 151 ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 152                 struct switch_val *val)
 153 {
 154         struct ar8216_priv *priv = to_ar8216(dev);
 155         val->value.i = priv->vlan;
 156         return 0;
 157 }
 158
 159
 160 static int
 161 ar8216_set_pvid(struct switch_dev *dev, int port, int vlan)
 162 {
 163         struct ar8216_priv *priv = to_ar8216(dev);
 164
 165         /* make sure no invalid PVIDs get set */
 166
 167         if (vlan >= dev->vlans)
 168                 return -EINVAL;
 169
 170         priv->pvid[port] = vlan;
 171         return 0;
 172 }
 173
 174 static int
 175 ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan)
 176 {
 177         struct ar8216_priv *priv = to_ar8216(dev);
 178         *vlan = priv->pvid[port];
 179         return 0;
 180 }
 181
 182 static int
 183 ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
 184                 struct switch_val *val)
 185 {
 186         struct ar8216_priv *priv = to_ar8216(dev);
 187         priv->vlan_id[val->port_vlan] = val->value.i;
 188         return 0;
 189 }
 190
 191 static int
 192 ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
 193                 struct switch_val *val)
 194 {
 195         struct ar8216_priv *priv = to_ar8216(dev);
 196         val->value.i = priv->vlan_id[val->port_vlan];
 197         return 0;
 198 }
 199
 200
 201 static int
 202 ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
 203 {
 204         struct ar8216_priv *priv = dev->phy_ptr;
 205         unsigned char *buf;
 206
 207     if (unlikely(!priv))
 208         goto error;
 209
 210         if (!priv->vlan)
 211                 goto send;
 212
 213         if (unlikely(skb_headroom(skb) < 2)) {
 214                 if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
 215                         goto error;
 216         }
 217
 218         buf = skb_push(skb, 2);
 219         buf[0] = 0x10;
 220         buf[1] = 0x80;
 221
 222 send:
 223         return priv->ndo_old->ndo_start_xmit(skb, dev);
 224
 225 error:
 226         dev_kfree_skb_any(skb);
 227         return 0;
 228 }
 229
 230 static int
 231 ar8216_mangle_rx(struct sk_buff *skb, int napi)
 232 {
 233         struct ar8216_priv *priv;
 234         struct net_device *dev;
 235         unsigned char *buf;
 236         int port, vlan;
 237
 238         dev = skb->dev;
 239         if (!dev)
 240                 goto error;
 241
 242         priv = dev->phy_ptr;
 243         if (!priv)
 244                 goto error;
 245
 246         /* don't strip the header if vlan mode is disabled */
 247         if (!priv->vlan)
 248                 goto recv;
 249
 250         /* strip header, get vlan id */
 251         buf = skb->data;
 252         skb_pull(skb, 2);
 253
 254         /* check for vlan header presence */
 255         if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
 256                 goto recv;
 257
 258         port = buf[0] & 0xf;
 259
 260         /* no need to fix up packets coming from a tagged source */
 261         if (priv->vlan_tagged & (1 << port))
 262                 goto recv;
 263
 264         /* lookup port vid from local table, the switch passes an invalid vlan id */
 265         vlan = priv->vlan_id[priv->pvid[port]];
 266
 267         buf[14 + 2] &= 0xf0;
 268         buf[14 + 2] |= vlan >> 8;
 269         buf[15 + 2] = vlan & 0xff;
 270
 271 recv:
 272         skb->protocol = eth_type_trans(skb, skb->dev);
 273
 274         if (napi)
 275                 return netif_receive_skb(skb);
 276         else
 277                 return netif_rx(skb);
 278
 279 error:
 280         /* no vlan? eat the packet! */
 281         dev_kfree_skb_any(skb);
 282         return 0;
 283 }
 284
 285 static int
 286 ar8216_netif_rx(struct sk_buff *skb)
 287 {
 288         return ar8216_mangle_rx(skb, 0);
 289 }
 290
 291 static int
 292 ar8216_netif_receive_skb(struct sk_buff *skb)
 293 {
 294         return ar8216_mangle_rx(skb, 1);
 295 }
 296
 297
 298 static struct switch_attr ar8216_globals[] = {
 299         {
 300                 .type = SWITCH_TYPE_INT,
 301                 .name = "enable_vlan",
 302                 .description = "Enable VLAN mode",
 303                 .set = ar8216_set_vlan,
 304                 .get = ar8216_get_vlan,
 305                 .max = 1
 306         },
 307 };
 308
 309 static struct switch_attr ar8216_port[] = {
 310 };
 311
 312 static struct switch_attr ar8216_vlan[] = {
 313         {
 314                 .type = SWITCH_TYPE_INT,
 315                 .name = "pvid",
 316                 .description = "VLAN ID",
 317                 .set = ar8216_set_vid,
 318                 .get = ar8216_get_vid,
 319                 .max = 4094,
 320         },
 321 };
 322
 323
 324 static int
 325 ar8216_get_ports(struct switch_dev *dev, struct switch_val *val)
 326 {
 327         struct ar8216_priv *priv = to_ar8216(dev);
 328         u8 ports = priv->vlan_table[val->port_vlan];
 329         int i;
 330
 331         val->len = 0;
 332         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 333                 struct switch_port *p;
 334
 335                 if (!(ports & (1 << i)))
 336                         continue;
 337
 338                 p = &val->value.ports[val->len++];
 339                 p->id = i;
 340                 if (priv->vlan_tagged & (1 << i))
 341                         p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
 342                 else
 343                         p->flags = 0;
 344         }
 345         return 0;
 346 }
 347
 348 static int
 349 ar8216_set_ports(struct switch_dev *dev, struct switch_val *val)
 350 {
 351         struct ar8216_priv *priv = to_ar8216(dev);
 352         u8 *vt = &priv->vlan_table[val->port_vlan];
 353         int i, j;
 354
 355         *vt = 0;
 356         for (i = 0; i < val->len; i++) {
 357                 struct switch_port *p = &val->value.ports[i];
 358
 359                 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
 360                         priv->vlan_tagged |= (1 << p->id);
 361                 else {
 362                         priv->vlan_tagged &= ~(1 << p->id);
 363                         priv->pvid[p->id] = val->port_vlan;
 364
 365                         /* make sure that an untagged port does not
 366                          * appear in other vlans */
 367                         for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 368                                 if (j == val->port_vlan)
 369                                         continue;
 370                                 priv->vlan_table[j] &= ~(1 << p->id);
 371                         }
 372                 }
 373
 374                 *vt |= 1 << p->id;
 375         }
 376         return 0;
 377 }
 378
 379 static int
 380 ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
 381 {
 382         int timeout = 20;
 383
 384         while ((priv->read(priv, reg) & mask) != val) {
 385                 if (timeout-- <= 0) {
 386                         printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n");
 387                         return 1;
 388                 }
 389         }
 390         return 0;
 391 }
 392
 393 static void
 394 ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val)
 395 {
 396         if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
 397                 return;
 398         if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
 399                 val &= AR8216_VTUDATA_MEMBER;
 400                 val |= AR8216_VTUDATA_VALID;
 401                 priv->write(priv, AR8216_REG_VTU_DATA, val);
 402         }
 403         op |= AR8216_VTU_ACTIVE;
 404         priv->write(priv, AR8216_REG_VTU, op);
 405 }
 406
 407 static int
 408 ar8216_hw_apply(struct switch_dev *dev)
 409 {
 410         struct ar8216_priv *priv = to_ar8216(dev);
 411         u8 portmask[AR8216_NUM_PORTS];
 412         int i, j;
 413
 414         mutex_lock(&priv->reg_mutex);
 415         /* flush all vlan translation unit entries */
 416         ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
 417
 418         memset(portmask, 0, sizeof(portmask));
 419         if (priv->vlan) {
 420                 /* calculate the port destination masks and load vlans
 421                  * into the vlan translation unit */
 422                 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 423                         u8 vp = priv->vlan_table[j];
 424
 425                         if (!vp)
 426                                 continue;
 427
 428                         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 429                                 u8 mask = (1 << i);
 430                                 if (vp & mask)
 431                                         portmask[i] |= vp & ~mask;
 432                         }
 433
 434                         ar8216_vtu_op(priv,
 435                                 AR8216_VTU_OP_LOAD |
 436                                 (priv->vlan_id[j] << AR8216_VTU_VID_S),
 437                                 priv->vlan_table[j]);
 438                 }
 439         } else {
 440                 /* vlan disabled:
 441                  * isolate all ports, but connect them to the cpu port */
 442                 for (i = 0; i < AR8216_NUM_PORTS; i++) {
 443                         if (i == AR8216_PORT_CPU)
 444                                 continue;
 445
 446                         portmask[i] = 1 << AR8216_PORT_CPU;
 447                         portmask[AR8216_PORT_CPU] |= (1 << i);
 448                 }
 449         }
 450
 451         /* update the port destination mask registers and tag settings */
 452         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 453                 int egress, ingress;
 454                 int pvid;
 455
 456                 if (priv->vlan) {
 457                         pvid = priv->vlan_id[priv->pvid[i]];
 458                 } else {
 459                         pvid = i;
 460                 }
 461
 462                 if (priv->vlan && (priv->vlan_tagged & (1 << i))) {
 463                         egress = AR8216_OUT_ADD_VLAN;
 464                 } else {
 465                         egress = AR8216_OUT_STRIP_VLAN;
 466                 }
 467                 if (priv->vlan) {
 468                         ingress = AR8216_IN_SECURE;
 469                 } else {
 470                         ingress = AR8216_IN_PORT_ONLY;
 471                 }
 472
 473                 ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i),
 474                         AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
 475                         AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
 476                         AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
 477                         AR8216_PORT_CTRL_LEARN |
 478                           (priv->vlan && i == AR8216_PORT_CPU && (priv->chip == AR8216) ?
 479                            AR8216_PORT_CTRL_HEADER : 0) |
 480                           (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
 481                           (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
 482
 483                 ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i),
 484                         AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
 485                           AR8216_PORT_VLAN_DEFAULT_ID,
 486                         (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) |
 487                           (ingress << AR8216_PORT_VLAN_MODE_S) |
 488                           (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
 489         }
 490         mutex_unlock(&priv->reg_mutex);
 491         return 0;
 492 }
 493
 494 static int
 495 ar8316_hw_init(struct ar8216_priv *priv) {
 496         static int initialized;
 497         int i;
 498         u32 val;
 499         struct mii_bus *bus;
 500
 501         if (initialized)
 502                 return 0;
 503
 504         val = priv->read(priv, 0x8);
 505
 506         if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 507                 /* value taken from Ubiquiti RouterStation Pro */
 508                 if (val == 0x81461bea) {
 509                         /* switch already intialized by bootloader */
 510                         initialized = true;
 511                         return 0;
 512                 }
 513                 priv->write(priv, 0x8, 0x81461bea);
 514         } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
 515                 /* value taken from AVM Fritz!Box 7390 sources */
 516                 if (val == 0x010e5b71) {
 517                         /* switch already initialized by bootloader */
 518                         initialized = true;
 519                         return 0;
 520                 }
 521                 priv->write(priv, 0x8, 0x010e5b71);
 522         } else {
 523                 /* no known value for phy interface */
 524                 printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n",
 525                         priv->phy->interface);
 526                 return -EINVAL;
 527         }
 528
 529         /* standard atheros magic */
 530         priv->write(priv, 0x38, 0xc000050e);
 531
 532         /* Initialize the ports */
 533         bus = priv->phy->bus;
 534         for (i = 0; i < 5; i++) {
 535                 if ((i == 4) &&
 536                         priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 537                         /* work around for phy4 rgmii mode */
 538                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x12);
 539                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x480c);
 540                         /* rx delay */
 541                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x0);
 542                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x824e);
 543                         /* tx delay */
 544                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x5);
 545                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x3d47);
 546                         msleep(1000);
 547                 }
 548
 549                 /* initialize the port itself */
 550                 bus->write(bus, i, MII_ADVERTISE,
 551                         ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 552                 bus->write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL);
 553                 bus->write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
 554                 msleep(1000);
 555         }
 556         initialized = true;
 557         return 0;
 558 }
 559
 560 static int
 561 ar8216_reset_switch(struct switch_dev *dev)
 562 {
 563         struct ar8216_priv *priv = to_ar8216(dev);
 564         int i;
 565
 566         mutex_lock(&priv->reg_mutex);
 567         memset(&priv->vlan, 0, sizeof(struct ar8216_priv) -
 568                 offsetof(struct ar8216_priv, vlan));
 569         for (i = 0; i < AR8X16_MAX_VLANS; i++) {
 570                 priv->vlan_id[i] = i;
 571         }
 572         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 573                 /* Enable port learning and tx */
 574                 priv->write(priv, AR8216_REG_PORT_CTRL(i),
 575                         AR8216_PORT_CTRL_LEARN |
 576                         (4 << AR8216_PORT_CTRL_STATE_S));
 577
 578                 priv->write(priv, AR8216_REG_PORT_VLAN(i), 0);
 579
 580                 /* Configure all PHYs */
 581                 if (i == AR8216_PORT_CPU) {
 582                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 583                                 AR8216_PORT_STATUS_LINK_UP |
 584                                 ((priv->chip == AR8316) ?
 585                                         AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) |
 586                                 AR8216_PORT_STATUS_TXMAC |
 587                                 AR8216_PORT_STATUS_RXMAC |
 588                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_RXFLOW : 0) |
 589                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_TXFLOW : 0) |
 590                                 AR8216_PORT_STATUS_DUPLEX);
 591                 } else {
 592                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 593                                 AR8216_PORT_STATUS_LINK_AUTO);
 594                 }
 595         }
 596         /* XXX: undocumented magic from atheros, required! */
 597         priv->write(priv, 0x38, 0xc000050e);
 598
 599         if (priv->chip == AR8216) {
 600                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 601                         AR8216_GCTRL_MTU, 1518 + 8 + 2);
 602         } else if (priv->chip == AR8316) {
 603                 /* enable jumbo frames */
 604                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 605                         AR8316_GCTRL_MTU, 9018 + 8 + 2);
 606         }
 607
 608         if (priv->chip == AR8316) {
 609                 /* enable cpu port to receive multicast and broadcast frames */
 610                 priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f);
 611         }
 612         mutex_unlock(&priv->reg_mutex);
 613         return ar8216_hw_apply(dev);
 614 }
 615
 616 static int
 617 ar8216_config_init(struct phy_device *pdev)
 618 {
 619         struct ar8216_priv *priv;
 620         struct net_device *dev = pdev->attached_dev;
 621         int ret;
 622
 623         priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
 624         if (priv == NULL)
 625                 return -ENOMEM;
 626
 627         priv->phy = pdev;
 628
 629         priv->chip = ar8216_id_chip(priv);
 630
 631         printk(KERN_INFO "%s: AR%d PHY driver attached.\n",
 632                 pdev->attached_dev->name, priv->chip);
 633
 634         if (pdev->addr != 0) {
 635                 if (priv->chip == AR8316) {
 636                         pdev->supported |= SUPPORTED_1000baseT_Full;
 637                         pdev->advertising |= ADVERTISED_1000baseT_Full;
 638                 }
 639                 kfree(priv);
 640                 return 0;
 641         }
 642
 643         pdev->supported = priv->chip == AR8316 ?
 644                 SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full;
 645         pdev->advertising = pdev->supported;
 646
 647         mutex_init(&priv->reg_mutex);
 648         priv->read = ar8216_mii_read;
 649         priv->write = ar8216_mii_write;
 650         memcpy(&priv->dev, &athdev, sizeof(struct switch_dev));
 651         pdev->priv = priv;
 652
 653         if (priv->chip == AR8316) {
 654                 priv->dev.name = "Atheros AR8316";
 655                 priv->dev.vlans = AR8X16_MAX_VLANS;
 656                 /* port 5 connected to the other mac, therefore unusable */
 657                 priv->dev.ports = (AR8216_NUM_PORTS - 1);
 658         }
 659
 660         if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {
 661                 kfree(priv);
 662                 goto done;
 663         }
 664
 665         if (priv->chip == AR8316) {
 666                 ret = ar8316_hw_init(priv);
 667                 if (ret) {
 668                         kfree(priv);
 669                         goto done;
 670                 }
 671         }
 672
 673         ret = ar8216_reset_switch(&priv->dev);
 674         if (ret) {
 675                 kfree(priv);
 676                 goto done;
 677         }
 678
 679         dev->phy_ptr = priv;
 680
 681         /* VID fixup only needed on ar8216 */
 682         if (pdev->addr == 0 && priv->chip == AR8216) {
 683                 pdev->pkt_align = 2;
 684                 pdev->netif_receive_skb = ar8216_netif_receive_skb;
 685                 pdev->netif_rx = ar8216_netif_rx;
 686                 priv->ndo_old = dev->netdev_ops;
 687                 memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
 688                 priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
 689                 dev->netdev_ops = &priv->ndo;
 690         }
 691
 692 done:
 693         return ret;
 694 }
 695
 696 static int
 697 ar8216_read_status(struct phy_device *phydev)
 698 {
 699         struct ar8216_priv *priv = phydev->priv;
 700         int ret;
 701         if (phydev->addr != 0) {
 702                 return genphy_read_status(phydev);
 703         }
 704
 705         phydev->speed = priv->chip == AR8316 ? SPEED_1000 : SPEED_100;
 706         phydev->duplex = DUPLEX_FULL;
 707         phydev->link = 1;
 708
 709         /* flush the address translation unit */
 710         mutex_lock(&priv->reg_mutex);
 711         ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0);
 712
 713         if (!ret)
 714                 priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
 715         else
 716                 ret = -ETIMEDOUT;
 717         mutex_unlock(&priv->reg_mutex);
 718
 719         phydev->state = PHY_RUNNING;
 720         netif_carrier_on(phydev->attached_dev);
 721         phydev->adjust_link(phydev->attached_dev);
 722
 723         return ret;
 724 }
 725
 726 static int
 727 ar8216_config_aneg(struct phy_device *phydev)
 728 {
 729         if (phydev->addr == 0)
 730                 return 0;
 731
 732         return genphy_config_aneg(phydev);
 733 }
 734
 735 static int
 736 ar8216_probe(struct phy_device *pdev)
 737 {
 738         struct ar8216_priv priv;
 739
 740         priv.phy = pdev;
 741         if (ar8216_id_chip(&priv) == UNKNOWN) {
 742                 return -ENODEV;
 743         }
 744         return 0;
 745 }
 746
 747 static void
 748 ar8216_remove(struct phy_device *pdev)
 749 {
 750         struct ar8216_priv *priv = pdev->priv;
 751         struct net_device *dev = pdev->attached_dev;
 752
 753         if (!priv)
 754                 return;
 755
 756         if (priv->ndo_old && dev)
 757                 dev->netdev_ops = priv->ndo_old;
 758         if (pdev->addr == 0)
 759                 unregister_switch(&priv->dev);
 760         kfree(priv);
 761 }
 762
 763 /* template */
 764 static struct switch_dev athdev = {
 765         .name = "Atheros AR8216",
 766         .cpu_port = AR8216_PORT_CPU,
 767         .ports = AR8216_NUM_PORTS,
 768         .vlans = AR8216_NUM_VLANS,
 769         .attr_global = {
 770                 .attr = ar8216_globals,
 771                 .n_attr = ARRAY_SIZE(ar8216_globals),
 772         },
 773         .attr_port = {
 774                 .attr = ar8216_port,
 775                 .n_attr = ARRAY_SIZE(ar8216_port),
 776         },
 777         .attr_vlan = {
 778                 .attr = ar8216_vlan,
 779                 .n_attr = ARRAY_SIZE(ar8216_vlan),
 780         },
 781         .get_port_pvid = ar8216_get_pvid,
 782         .set_port_pvid = ar8216_set_pvid,
 783         .get_vlan_ports = ar8216_get_ports,
 784         .set_vlan_ports = ar8216_set_ports,
 785         .apply_config = ar8216_hw_apply,
 786         .reset_switch = ar8216_reset_switch,
 787 };
 788
 789 static struct phy_driver ar8216_driver = {
 790         .phy_id         = 0x004d0000,
 791         .name           = "Atheros AR8216/AR8316",
 792         .phy_id_mask    = 0xffff0000,
 793         .features       = PHY_BASIC_FEATURES,
 794         .probe          = ar8216_probe,
 795         .remove         = ar8216_remove,
 796         .config_init    = &ar8216_config_init,
 797         .config_aneg    = &ar8216_config_aneg,
 798         .read_status    = &ar8216_read_status,
 799         .driver         = { .owner = THIS_MODULE },
 800 };
 801
 802 int __init
 803 ar8216_init(void)
 804 {
 805         return phy_driver_register(&ar8216_driver);
 806 }
 807
 808 void __exit
 809 ar8216_exit(void)
 810 {
 811         phy_driver_unregister(&ar8216_driver);
 812 }
 813
 814 module_init(ar8216_init);
 815 module_exit(ar8216_exit);
 816 MODULE_LICENSE("GPL");
 817