target/linux/generic/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 #define AR8X16_PROBE_RETRIES    10
  37
  38 struct ar8216_priv {
  39         struct switch_dev dev;
  40         struct phy_device *phy;
  41         u32 (*read)(struct ar8216_priv *priv, int reg);
  42         void (*write)(struct ar8216_priv *priv, int reg, u32 val);
  43         const struct net_device_ops *ndo_old;
  44         struct net_device_ops ndo;
  45         struct mutex reg_mutex;
  46         int chip;
  47
  48         /* all fields below are cleared on reset */
  49         bool vlan;
  50         u16 vlan_id[AR8X16_MAX_VLANS];
  51         u8 vlan_table[AR8X16_MAX_VLANS];
  52         u8 vlan_tagged;
  53         u16 pvid[AR8216_NUM_PORTS];
  54 };
  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         int i;
 123
 124         val = ar8216_mii_read(priv, AR8216_REG_CTRL);
 125         if (val == ~0)
 126                 return UNKNOWN;
 127
 128         id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 129         for (i = 0; i < AR8X16_PROBE_RETRIES; i++) {
 130                 u16 t;
 131
 132                 val = ar8216_mii_read(priv, AR8216_REG_CTRL);
 133                 if (val == ~0)
 134                         return UNKNOWN;
 135
 136                 t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 137                 if (t != id)
 138                         return UNKNOWN;
 139         }
 140
 141         switch (id) {
 142         case 0x0101:
 143                 return AR8216;
 144         case 0x1001:
 145                 return AR8316;
 146         default:
 147                 printk(KERN_DEBUG
 148                         "ar8216: Unknown Atheros device [ver=%d, rev=%d, phy_id=%04x%04x]\n",
 149                         (int)(id >> AR8216_CTRL_VERSION_S),
 150                         (int)(id & AR8216_CTRL_REVISION),
 151                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 2),
 152                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 3));
 153
 154                 return UNKNOWN;
 155         }
 156 }
 157
 158 static int
 159 ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 160                 struct switch_val *val)
 161 {
 162         struct ar8216_priv *priv = to_ar8216(dev);
 163         priv->vlan = !!val->value.i;
 164         return 0;
 165 }
 166
 167 static int
 168 ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 169                 struct switch_val *val)
 170 {
 171         struct ar8216_priv *priv = to_ar8216(dev);
 172         val->value.i = priv->vlan;
 173         return 0;
 174 }
 175
 176
 177 static int
 178 ar8216_set_pvid(struct switch_dev *dev, int port, int vlan)
 179 {
 180         struct ar8216_priv *priv = to_ar8216(dev);
 181
 182         /* make sure no invalid PVIDs get set */
 183
 184         if (vlan >= dev->vlans)
 185                 return -EINVAL;
 186
 187         priv->pvid[port] = vlan;
 188         return 0;
 189 }
 190
 191 static int
 192 ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan)
 193 {
 194         struct ar8216_priv *priv = to_ar8216(dev);
 195         *vlan = priv->pvid[port];
 196         return 0;
 197 }
 198
 199 static int
 200 ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
 201                 struct switch_val *val)
 202 {
 203         struct ar8216_priv *priv = to_ar8216(dev);
 204         priv->vlan_id[val->port_vlan] = val->value.i;
 205         return 0;
 206 }
 207
 208 static int
 209 ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
 210                 struct switch_val *val)
 211 {
 212         struct ar8216_priv *priv = to_ar8216(dev);
 213         val->value.i = priv->vlan_id[val->port_vlan];
 214         return 0;
 215 }
 216
 217
 218 static int
 219 ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
 220 {
 221         struct ar8216_priv *priv = dev->phy_ptr;
 222         unsigned char *buf;
 223
 224     if (unlikely(!priv))
 225         goto error;
 226
 227         if (!priv->vlan)
 228                 goto send;
 229
 230         if (unlikely(skb_headroom(skb) < 2)) {
 231                 if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
 232                         goto error;
 233         }
 234
 235         buf = skb_push(skb, 2);
 236         buf[0] = 0x10;
 237         buf[1] = 0x80;
 238
 239 send:
 240         return priv->ndo_old->ndo_start_xmit(skb, dev);
 241
 242 error:
 243         dev_kfree_skb_any(skb);
 244         return 0;
 245 }
 246
 247 static int
 248 ar8216_mangle_rx(struct sk_buff *skb, int napi)
 249 {
 250         struct ar8216_priv *priv;
 251         struct net_device *dev;
 252         unsigned char *buf;
 253         int port, vlan;
 254
 255         dev = skb->dev;
 256         if (!dev)
 257                 goto error;
 258
 259         priv = dev->phy_ptr;
 260         if (!priv)
 261                 goto error;
 262
 263         /* don't strip the header if vlan mode is disabled */
 264         if (!priv->vlan)
 265                 goto recv;
 266
 267         /* strip header, get vlan id */
 268         buf = skb->data;
 269         skb_pull(skb, 2);
 270
 271         /* check for vlan header presence */
 272         if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
 273                 goto recv;
 274
 275         port = buf[0] & 0xf;
 276
 277         /* no need to fix up packets coming from a tagged source */
 278         if (priv->vlan_tagged & (1 << port))
 279                 goto recv;
 280
 281         /* lookup port vid from local table, the switch passes an invalid vlan id */
 282         vlan = priv->vlan_id[priv->pvid[port]];
 283
 284         buf[14 + 2] &= 0xf0;
 285         buf[14 + 2] |= vlan >> 8;
 286         buf[15 + 2] = vlan & 0xff;
 287
 288 recv:
 289         skb->protocol = eth_type_trans(skb, skb->dev);
 290
 291         if (napi)
 292                 return netif_receive_skb(skb);
 293         else
 294                 return netif_rx(skb);
 295
 296 error:
 297         /* no vlan? eat the packet! */
 298         dev_kfree_skb_any(skb);
 299         return NET_RX_DROP;
 300 }
 301
 302 static int
 303 ar8216_netif_rx(struct sk_buff *skb)
 304 {
 305         return ar8216_mangle_rx(skb, 0);
 306 }
 307
 308 static int
 309 ar8216_netif_receive_skb(struct sk_buff *skb)
 310 {
 311         return ar8216_mangle_rx(skb, 1);
 312 }
 313
 314
 315 static struct switch_attr ar8216_globals[] = {
 316         {
 317                 .type = SWITCH_TYPE_INT,
 318                 .name = "enable_vlan",
 319                 .description = "Enable VLAN mode",
 320                 .set = ar8216_set_vlan,
 321                 .get = ar8216_get_vlan,
 322                 .max = 1
 323         },
 324 };
 325
 326 static struct switch_attr ar8216_port[] = {
 327 };
 328
 329 static struct switch_attr ar8216_vlan[] = {
 330         {
 331                 .type = SWITCH_TYPE_INT,
 332                 .name = "vid",
 333                 .description = "VLAN ID (0-4094)",
 334                 .set = ar8216_set_vid,
 335                 .get = ar8216_get_vid,
 336                 .max = 4094,
 337         },
 338 };
 339
 340
 341 static int
 342 ar8216_get_ports(struct switch_dev *dev, struct switch_val *val)
 343 {
 344         struct ar8216_priv *priv = to_ar8216(dev);
 345         u8 ports = priv->vlan_table[val->port_vlan];
 346         int i;
 347
 348         val->len = 0;
 349         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 350                 struct switch_port *p;
 351
 352                 if (!(ports & (1 << i)))
 353                         continue;
 354
 355                 p = &val->value.ports[val->len++];
 356                 p->id = i;
 357                 if (priv->vlan_tagged & (1 << i))
 358                         p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
 359                 else
 360                         p->flags = 0;
 361         }
 362         return 0;
 363 }
 364
 365 static int
 366 ar8216_set_ports(struct switch_dev *dev, struct switch_val *val)
 367 {
 368         struct ar8216_priv *priv = to_ar8216(dev);
 369         u8 *vt = &priv->vlan_table[val->port_vlan];
 370         int i, j;
 371
 372         *vt = 0;
 373         for (i = 0; i < val->len; i++) {
 374                 struct switch_port *p = &val->value.ports[i];
 375
 376                 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
 377                         priv->vlan_tagged |= (1 << p->id);
 378                 else {
 379                         priv->vlan_tagged &= ~(1 << p->id);
 380                         priv->pvid[p->id] = val->port_vlan;
 381
 382                         /* make sure that an untagged port does not
 383                          * appear in other vlans */
 384                         for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 385                                 if (j == val->port_vlan)
 386                                         continue;
 387                                 priv->vlan_table[j] &= ~(1 << p->id);
 388                         }
 389                 }
 390
 391                 *vt |= 1 << p->id;
 392         }
 393         return 0;
 394 }
 395
 396 static int
 397 ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
 398 {
 399         int timeout = 20;
 400
 401         while ((priv->read(priv, reg) & mask) != val) {
 402                 if (timeout-- <= 0) {
 403                         printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n");
 404                         return 1;
 405                 }
 406         }
 407         return 0;
 408 }
 409
 410 static void
 411 ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val)
 412 {
 413         if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
 414                 return;
 415         if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
 416                 val &= AR8216_VTUDATA_MEMBER;
 417                 val |= AR8216_VTUDATA_VALID;
 418                 priv->write(priv, AR8216_REG_VTU_DATA, val);
 419         }
 420         op |= AR8216_VTU_ACTIVE;
 421         priv->write(priv, AR8216_REG_VTU, op);
 422 }
 423
 424 static int
 425 ar8216_hw_apply(struct switch_dev *dev)
 426 {
 427         struct ar8216_priv *priv = to_ar8216(dev);
 428         u8 portmask[AR8216_NUM_PORTS];
 429         int i, j;
 430
 431         mutex_lock(&priv->reg_mutex);
 432         /* flush all vlan translation unit entries */
 433         ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
 434
 435         memset(portmask, 0, sizeof(portmask));
 436         if (priv->vlan) {
 437                 /* calculate the port destination masks and load vlans
 438                  * into the vlan translation unit */
 439                 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 440                         u8 vp = priv->vlan_table[j];
 441
 442                         if (!vp)
 443                                 continue;
 444
 445                         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 446                                 u8 mask = (1 << i);
 447                                 if (vp & mask)
 448                                         portmask[i] |= vp & ~mask;
 449                         }
 450
 451                         ar8216_vtu_op(priv,
 452                                 AR8216_VTU_OP_LOAD |
 453                                 (priv->vlan_id[j] << AR8216_VTU_VID_S),
 454                                 priv->vlan_table[j]);
 455                 }
 456         } else {
 457                 /* vlan disabled:
 458                  * isolate all ports, but connect them to the cpu port */
 459                 for (i = 0; i < AR8216_NUM_PORTS; i++) {
 460                         if (i == AR8216_PORT_CPU)
 461                                 continue;
 462
 463                         portmask[i] = 1 << AR8216_PORT_CPU;
 464                         portmask[AR8216_PORT_CPU] |= (1 << i);
 465                 }
 466         }
 467
 468         /* update the port destination mask registers and tag settings */
 469         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 470                 int egress, ingress;
 471                 int pvid;
 472
 473                 if (priv->vlan) {
 474                         pvid = priv->vlan_id[priv->pvid[i]];
 475                 } else {
 476                         pvid = i;
 477                 }
 478
 479                 if (priv->vlan && (priv->vlan_tagged & (1 << i))) {
 480                         egress = AR8216_OUT_ADD_VLAN;
 481                 } else {
 482                         egress = AR8216_OUT_STRIP_VLAN;
 483                 }
 484                 if (priv->vlan) {
 485                         ingress = AR8216_IN_SECURE;
 486                 } else {
 487                         ingress = AR8216_IN_PORT_ONLY;
 488                 }
 489
 490                 ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i),
 491                         AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
 492                         AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
 493                         AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
 494                         AR8216_PORT_CTRL_LEARN |
 495                           (priv->vlan && i == AR8216_PORT_CPU && (priv->chip == AR8216) ?
 496                            AR8216_PORT_CTRL_HEADER : 0) |
 497                           (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
 498                           (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
 499
 500                 ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i),
 501                         AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
 502                           AR8216_PORT_VLAN_DEFAULT_ID,
 503                         (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) |
 504                           (ingress << AR8216_PORT_VLAN_MODE_S) |
 505                           (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
 506         }
 507         mutex_unlock(&priv->reg_mutex);
 508         return 0;
 509 }
 510
 511 static int
 512 ar8316_hw_init(struct ar8216_priv *priv) {
 513         static int initialized;
 514         int i;
 515         u32 val;
 516         struct mii_bus *bus;
 517
 518         if (initialized)
 519                 return 0;
 520
 521         val = priv->read(priv, 0x8);
 522
 523         if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 524                 /* value taken from Ubiquiti RouterStation Pro */
 525                 if (val == 0x81461bea) {
 526                         /* switch already intialized by bootloader */
 527                         initialized = true;
 528                         return 0;
 529                 }
 530                 priv->write(priv, 0x8, 0x81461bea);
 531         } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
 532                 /* value taken from AVM Fritz!Box 7390 sources */
 533                 if (val == 0x010e5b71) {
 534                         /* switch already initialized by bootloader */
 535                         initialized = true;
 536                         return 0;
 537                 }
 538                 priv->write(priv, 0x8, 0x010e5b71);
 539         } else {
 540                 /* no known value for phy interface */
 541                 printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n",
 542                         priv->phy->interface);
 543                 return -EINVAL;
 544         }
 545
 546         /* standard atheros magic */
 547         priv->write(priv, 0x38, 0xc000050e);
 548
 549         /* Initialize the ports */
 550         bus = priv->phy->bus;
 551         for (i = 0; i < 5; i++) {
 552                 if ((i == 4) &&
 553                         priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 554                         /* work around for phy4 rgmii mode */
 555                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x12);
 556                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x480c);
 557                         /* rx delay */
 558                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x0);
 559                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x824e);
 560                         /* tx delay */
 561                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x5);
 562                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x3d47);
 563                         msleep(1000);
 564                 }
 565
 566                 /* initialize the port itself */
 567                 bus->write(bus, i, MII_ADVERTISE,
 568                         ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 569                 bus->write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL);
 570                 bus->write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
 571                 msleep(1000);
 572         }
 573         initialized = true;
 574         return 0;
 575 }
 576
 577 static int
 578 ar8216_reset_switch(struct switch_dev *dev)
 579 {
 580         struct ar8216_priv *priv = to_ar8216(dev);
 581         int i;
 582
 583         mutex_lock(&priv->reg_mutex);
 584         memset(&priv->vlan, 0, sizeof(struct ar8216_priv) -
 585                 offsetof(struct ar8216_priv, vlan));
 586         for (i = 0; i < AR8X16_MAX_VLANS; i++) {
 587                 priv->vlan_id[i] = i;
 588         }
 589         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 590                 /* Enable port learning and tx */
 591                 priv->write(priv, AR8216_REG_PORT_CTRL(i),
 592                         AR8216_PORT_CTRL_LEARN |
 593                         (4 << AR8216_PORT_CTRL_STATE_S));
 594
 595                 priv->write(priv, AR8216_REG_PORT_VLAN(i), 0);
 596
 597                 /* Configure all PHYs */
 598                 if (i == AR8216_PORT_CPU) {
 599                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 600                                 AR8216_PORT_STATUS_LINK_UP |
 601                                 ((priv->chip == AR8316) ?
 602                                         AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) |
 603                                 AR8216_PORT_STATUS_TXMAC |
 604                                 AR8216_PORT_STATUS_RXMAC |
 605                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_RXFLOW : 0) |
 606                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_TXFLOW : 0) |
 607                                 AR8216_PORT_STATUS_DUPLEX);
 608                 } else {
 609                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 610                                 AR8216_PORT_STATUS_LINK_AUTO);
 611                 }
 612         }
 613         /* XXX: undocumented magic from atheros, required! */
 614         priv->write(priv, 0x38, 0xc000050e);
 615
 616         if (priv->chip == AR8216) {
 617                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 618                         AR8216_GCTRL_MTU, 1518 + 8 + 2);
 619         } else if (priv->chip == AR8316) {
 620                 /* enable jumbo frames */
 621                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 622                         AR8316_GCTRL_MTU, 9018 + 8 + 2);
 623         }
 624
 625         if (priv->chip == AR8316) {
 626                 /* enable cpu port to receive multicast and broadcast frames */
 627                 priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f);
 628         }
 629         mutex_unlock(&priv->reg_mutex);
 630         return ar8216_hw_apply(dev);
 631 }
 632
 633
 634 static const struct switch_dev_ops ar8216_ops = {
 635         .attr_global = {
 636                 .attr = ar8216_globals,
 637                 .n_attr = ARRAY_SIZE(ar8216_globals),
 638         },
 639         .attr_port = {
 640                 .attr = ar8216_port,
 641                 .n_attr = ARRAY_SIZE(ar8216_port),
 642         },
 643         .attr_vlan = {
 644                 .attr = ar8216_vlan,
 645                 .n_attr = ARRAY_SIZE(ar8216_vlan),
 646         },
 647         .get_port_pvid = ar8216_get_pvid,
 648         .set_port_pvid = ar8216_set_pvid,
 649         .get_vlan_ports = ar8216_get_ports,
 650         .set_vlan_ports = ar8216_set_ports,
 651         .apply_config = ar8216_hw_apply,
 652         .reset_switch = ar8216_reset_switch,
 653 };
 654
 655 static int
 656 ar8216_config_init(struct phy_device *pdev)
 657 {
 658         struct ar8216_priv *priv;
 659         struct net_device *dev = pdev->attached_dev;
 660         struct switch_dev *swdev;
 661         int ret;
 662
 663         priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
 664         if (priv == NULL)
 665                 return -ENOMEM;
 666
 667         priv->phy = pdev;
 668
 669         priv->chip = ar8216_id_chip(priv);
 670
 671         if (pdev->addr == 0)
 672                 printk(KERN_INFO "%s: AR%d switch driver attached.\n",
 673                         pdev->attached_dev->name, priv->chip);
 674
 675
 676         if (pdev->addr != 0) {
 677                 if (priv->chip == AR8316) {
 678                         pdev->supported |= SUPPORTED_1000baseT_Full;
 679                         pdev->advertising |= ADVERTISED_1000baseT_Full;
 680                 }
 681                 kfree(priv);
 682                 return 0;
 683         }
 684
 685         pdev->supported = priv->chip == AR8316 ?
 686                 SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full;
 687         pdev->advertising = pdev->supported;
 688
 689         mutex_init(&priv->reg_mutex);
 690         priv->read = ar8216_mii_read;
 691         priv->write = ar8216_mii_write;
 692
 693         pdev->priv = priv;
 694
 695         swdev = &priv->dev;
 696         swdev->cpu_port = AR8216_PORT_CPU;
 697         swdev->ops = &ar8216_ops;
 698
 699         if (priv->chip == AR8316) {
 700                 swdev->name = "Atheros AR8316";
 701                 swdev->vlans = AR8X16_MAX_VLANS;
 702                 /* port 5 connected to the other mac, therefore unusable */
 703                 swdev->ports = (AR8216_NUM_PORTS - 1);
 704         } else {
 705                 swdev->name = "Atheros AR8216";
 706                 swdev->vlans = AR8216_NUM_VLANS;
 707                 swdev->ports = AR8216_NUM_PORTS;
 708         }
 709
 710         if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {
 711                 kfree(priv);
 712                 goto done;
 713         }
 714
 715         if (priv->chip == AR8316) {
 716                 ret = ar8316_hw_init(priv);
 717                 if (ret) {
 718                         kfree(priv);
 719                         goto done;
 720                 }
 721         }
 722
 723         ret = ar8216_reset_switch(&priv->dev);
 724         if (ret) {
 725                 kfree(priv);
 726                 goto done;
 727         }
 728
 729         dev->phy_ptr = priv;
 730
 731         /* VID fixup only needed on ar8216 */
 732         if (pdev->addr == 0 && priv->chip == AR8216) {
 733                 pdev->pkt_align = 2;
 734                 pdev->netif_receive_skb = ar8216_netif_receive_skb;
 735                 pdev->netif_rx = ar8216_netif_rx;
 736                 priv->ndo_old = dev->netdev_ops;
 737                 memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
 738                 priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
 739                 dev->netdev_ops = &priv->ndo;
 740         }
 741
 742 done:
 743         return ret;
 744 }
 745
 746 static int
 747 ar8216_read_status(struct phy_device *phydev)
 748 {
 749         struct ar8216_priv *priv = phydev->priv;
 750         int ret;
 751         if (phydev->addr != 0) {
 752                 return genphy_read_status(phydev);
 753         }
 754
 755         phydev->speed = priv->chip == AR8316 ? SPEED_1000 : SPEED_100;
 756         phydev->duplex = DUPLEX_FULL;
 757         phydev->link = 1;
 758
 759         /* flush the address translation unit */
 760         mutex_lock(&priv->reg_mutex);
 761         ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0);
 762
 763         if (!ret)
 764                 priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
 765         else
 766                 ret = -ETIMEDOUT;
 767         mutex_unlock(&priv->reg_mutex);
 768
 769         phydev->state = PHY_RUNNING;
 770         netif_carrier_on(phydev->attached_dev);
 771         phydev->adjust_link(phydev->attached_dev);
 772
 773         return ret;
 774 }
 775
 776 static int
 777 ar8216_config_aneg(struct phy_device *phydev)
 778 {
 779         if (phydev->addr == 0)
 780                 return 0;
 781
 782         return genphy_config_aneg(phydev);
 783 }
 784
 785 static int
 786 ar8216_probe(struct phy_device *pdev)
 787 {
 788         struct ar8216_priv priv;
 789         u16 chip;
 790
 791         priv.phy = pdev;
 792         chip = ar8216_id_chip(&priv);
 793         if (chip == UNKNOWN)
 794                 return -ENODEV;
 795
 796         return 0;
 797 }
 798
 799 static void
 800 ar8216_remove(struct phy_device *pdev)
 801 {
 802         struct ar8216_priv *priv = pdev->priv;
 803         struct net_device *dev = pdev->attached_dev;
 804
 805         if (!priv)
 806                 return;
 807
 808         if (priv->ndo_old && dev)
 809                 dev->netdev_ops = priv->ndo_old;
 810         if (pdev->addr == 0)
 811                 unregister_switch(&priv->dev);
 812         kfree(priv);
 813 }
 814
 815 static struct phy_driver ar8216_driver = {
 816         .phy_id         = 0x004d0000,
 817         .name           = "Atheros AR8216/AR8316",
 818         .phy_id_mask    = 0xffff0000,
 819         .features       = PHY_BASIC_FEATURES,
 820         .probe          = ar8216_probe,
 821         .remove         = ar8216_remove,
 822         .config_init    = &ar8216_config_init,
 823         .config_aneg    = &ar8216_config_aneg,
 824         .read_status    = &ar8216_read_status,
 825         .driver         = { .owner = THIS_MODULE },
 826 };
 827
 828 int __init
 829 ar8216_init(void)
 830 {
 831         return phy_driver_register(&ar8216_driver);
 832 }
 833
 834 void __exit
 835 ar8216_exit(void)
 836 {
 837         phy_driver_unregister(&ar8216_driver);
 838 }
 839
 840 module_init(ar8216_init);
 841 module_exit(ar8216_exit);
 842 MODULE_LICENSE("GPL");
 843