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 static struct switch_dev athdev;
  56
  57 #define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev)
  58
  59 static inline void
  60 split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
  61 {
  62         regaddr >>= 1;
  63         *r1 = regaddr & 0x1e;
  64
  65         regaddr >>= 5;
  66         *r2 = regaddr & 0x7;
  67
  68         regaddr >>= 3;
  69         *page = regaddr & 0x1ff;
  70 }
  71
  72 static u32
  73 ar8216_mii_read(struct ar8216_priv *priv, int reg)
  74 {
  75         struct phy_device *phy = priv->phy;
  76         u16 r1, r2, page;
  77         u16 lo, hi;
  78
  79         split_addr((u32) reg, &r1, &r2, &page);
  80         phy->bus->write(phy->bus, 0x18, 0, page);
  81         msleep(1); /* wait for the page switch to propagate */
  82         lo = phy->bus->read(phy->bus, 0x10 | r2, r1);
  83         hi = phy->bus->read(phy->bus, 0x10 | r2, r1 + 1);
  84
  85         return (hi << 16) | lo;
  86 }
  87
  88 static void
  89 ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val)
  90 {
  91         struct phy_device *phy = priv->phy;
  92         u16 r1, r2, r3;
  93         u16 lo, hi;
  94
  95         split_addr((u32) reg, &r1, &r2, &r3);
  96         phy->bus->write(phy->bus, 0x18, 0, r3);
  97         msleep(1); /* wait for the page switch to propagate */
  98
  99         lo = val & 0xffff;
 100         hi = (u16) (val >> 16);
 101         phy->bus->write(phy->bus, 0x10 | r2, r1 + 1, hi);
 102         phy->bus->write(phy->bus, 0x10 | r2, r1, lo);
 103 }
 104
 105 static u32
 106 ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
 107 {
 108         u32 v;
 109
 110         v = priv->read(priv, reg);
 111         v &= ~mask;
 112         v |= val;
 113         priv->write(priv, reg, v);
 114
 115         return v;
 116 }
 117
 118 static inline int
 119 ar8216_id_chip(struct ar8216_priv *priv)
 120 {
 121         u32 val;
 122         u16 id;
 123         int i;
 124
 125         val = ar8216_mii_read(priv, AR8216_REG_CTRL);
 126         if (val == ~0)
 127                 return UNKNOWN;
 128
 129         id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 130         for (i = 0; i < AR8X16_PROBE_RETRIES; i++) {
 131                 u16 t;
 132
 133                 val = ar8216_mii_read(priv, AR8216_REG_CTRL);
 134                 if (val == ~0)
 135                         return UNKNOWN;
 136
 137                 t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 138                 if (t != id)
 139                         return UNKNOWN;
 140         }
 141
 142         switch (id) {
 143         case 0x0101:
 144                 return AR8216;
 145         case 0x1001:
 146                 return AR8316;
 147         default:
 148                 printk(KERN_DEBUG
 149                         "ar8216: Unknown Atheros device [ver=%d, rev=%d, phy_id=%04x%04x]\n",
 150                         (int)(id >> AR8216_CTRL_VERSION_S),
 151                         (int)(id & AR8216_CTRL_REVISION),
 152                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 2),
 153                         priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 3));
 154
 155                 return UNKNOWN;
 156         }
 157 }
 158
 159 static int
 160 ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 161                 struct switch_val *val)
 162 {
 163         struct ar8216_priv *priv = to_ar8216(dev);
 164         priv->vlan = !!val->value.i;
 165         return 0;
 166 }
 167
 168 static int
 169 ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
 170                 struct switch_val *val)
 171 {
 172         struct ar8216_priv *priv = to_ar8216(dev);
 173         val->value.i = priv->vlan;
 174         return 0;
 175 }
 176
 177
 178 static int
 179 ar8216_set_pvid(struct switch_dev *dev, int port, int vlan)
 180 {
 181         struct ar8216_priv *priv = to_ar8216(dev);
 182
 183         /* make sure no invalid PVIDs get set */
 184
 185         if (vlan >= dev->vlans)
 186                 return -EINVAL;
 187
 188         priv->pvid[port] = vlan;
 189         return 0;
 190 }
 191
 192 static int
 193 ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan)
 194 {
 195         struct ar8216_priv *priv = to_ar8216(dev);
 196         *vlan = priv->pvid[port];
 197         return 0;
 198 }
 199
 200 static int
 201 ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
 202                 struct switch_val *val)
 203 {
 204         struct ar8216_priv *priv = to_ar8216(dev);
 205         priv->vlan_id[val->port_vlan] = val->value.i;
 206         return 0;
 207 }
 208
 209 static int
 210 ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
 211                 struct switch_val *val)
 212 {
 213         struct ar8216_priv *priv = to_ar8216(dev);
 214         val->value.i = priv->vlan_id[val->port_vlan];
 215         return 0;
 216 }
 217
 218
 219 static int
 220 ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
 221 {
 222         struct ar8216_priv *priv = dev->phy_ptr;
 223         unsigned char *buf;
 224
 225     if (unlikely(!priv))
 226         goto error;
 227
 228         if (!priv->vlan)
 229                 goto send;
 230
 231         if (unlikely(skb_headroom(skb) < 2)) {
 232                 if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
 233                         goto error;
 234         }
 235
 236         buf = skb_push(skb, 2);
 237         buf[0] = 0x10;
 238         buf[1] = 0x80;
 239
 240 send:
 241         return priv->ndo_old->ndo_start_xmit(skb, dev);
 242
 243 error:
 244         dev_kfree_skb_any(skb);
 245         return 0;
 246 }
 247
 248 static int
 249 ar8216_mangle_rx(struct sk_buff *skb, int napi)
 250 {
 251         struct ar8216_priv *priv;
 252         struct net_device *dev;
 253         unsigned char *buf;
 254         int port, vlan;
 255
 256         dev = skb->dev;
 257         if (!dev)
 258                 goto error;
 259
 260         priv = dev->phy_ptr;
 261         if (!priv)
 262                 goto error;
 263
 264         /* don't strip the header if vlan mode is disabled */
 265         if (!priv->vlan)
 266                 goto recv;
 267
 268         /* strip header, get vlan id */
 269         buf = skb->data;
 270         skb_pull(skb, 2);
 271
 272         /* check for vlan header presence */
 273         if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
 274                 goto recv;
 275
 276         port = buf[0] & 0xf;
 277
 278         /* no need to fix up packets coming from a tagged source */
 279         if (priv->vlan_tagged & (1 << port))
 280                 goto recv;
 281
 282         /* lookup port vid from local table, the switch passes an invalid vlan id */
 283         vlan = priv->vlan_id[priv->pvid[port]];
 284
 285         buf[14 + 2] &= 0xf0;
 286         buf[14 + 2] |= vlan >> 8;
 287         buf[15 + 2] = vlan & 0xff;
 288
 289 recv:
 290         skb->protocol = eth_type_trans(skb, skb->dev);
 291
 292         if (napi)
 293                 return netif_receive_skb(skb);
 294         else
 295                 return netif_rx(skb);
 296
 297 error:
 298         /* no vlan? eat the packet! */
 299         dev_kfree_skb_any(skb);
 300         return NET_RX_DROP;
 301 }
 302
 303 static int
 304 ar8216_netif_rx(struct sk_buff *skb)
 305 {
 306         return ar8216_mangle_rx(skb, 0);
 307 }
 308
 309 static int
 310 ar8216_netif_receive_skb(struct sk_buff *skb)
 311 {
 312         return ar8216_mangle_rx(skb, 1);
 313 }
 314
 315
 316 static struct switch_attr ar8216_globals[] = {
 317         {
 318                 .type = SWITCH_TYPE_INT,
 319                 .name = "enable_vlan",
 320                 .description = "Enable VLAN mode",
 321                 .set = ar8216_set_vlan,
 322                 .get = ar8216_get_vlan,
 323                 .max = 1
 324         },
 325 };
 326
 327 static struct switch_attr ar8216_port[] = {
 328 };
 329
 330 static struct switch_attr ar8216_vlan[] = {
 331         {
 332                 .type = SWITCH_TYPE_INT,
 333                 .name = "pvid",
 334                 .description = "VLAN ID",
 335                 .set = ar8216_set_vid,
 336                 .get = ar8216_get_vid,
 337                 .max = 4094,
 338         },
 339 };
 340
 341
 342 static int
 343 ar8216_get_ports(struct switch_dev *dev, struct switch_val *val)
 344 {
 345         struct ar8216_priv *priv = to_ar8216(dev);
 346         u8 ports = priv->vlan_table[val->port_vlan];
 347         int i;
 348
 349         val->len = 0;
 350         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 351                 struct switch_port *p;
 352
 353                 if (!(ports & (1 << i)))
 354                         continue;
 355
 356                 p = &val->value.ports[val->len++];
 357                 p->id = i;
 358                 if (priv->vlan_tagged & (1 << i))
 359                         p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
 360                 else
 361                         p->flags = 0;
 362         }
 363         return 0;
 364 }
 365
 366 static int
 367 ar8216_set_ports(struct switch_dev *dev, struct switch_val *val)
 368 {
 369         struct ar8216_priv *priv = to_ar8216(dev);
 370         u8 *vt = &priv->vlan_table[val->port_vlan];
 371         int i, j;
 372
 373         *vt = 0;
 374         for (i = 0; i < val->len; i++) {
 375                 struct switch_port *p = &val->value.ports[i];
 376
 377                 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
 378                         priv->vlan_tagged |= (1 << p->id);
 379                 else {
 380                         priv->vlan_tagged &= ~(1 << p->id);
 381                         priv->pvid[p->id] = val->port_vlan;
 382
 383                         /* make sure that an untagged port does not
 384                          * appear in other vlans */
 385                         for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 386                                 if (j == val->port_vlan)
 387                                         continue;
 388                                 priv->vlan_table[j] &= ~(1 << p->id);
 389                         }
 390                 }
 391
 392                 *vt |= 1 << p->id;
 393         }
 394         return 0;
 395 }
 396
 397 static int
 398 ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
 399 {
 400         int timeout = 20;
 401
 402         while ((priv->read(priv, reg) & mask) != val) {
 403                 if (timeout-- <= 0) {
 404                         printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n");
 405                         return 1;
 406                 }
 407         }
 408         return 0;
 409 }
 410
 411 static void
 412 ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val)
 413 {
 414         if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
 415                 return;
 416         if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
 417                 val &= AR8216_VTUDATA_MEMBER;
 418                 val |= AR8216_VTUDATA_VALID;
 419                 priv->write(priv, AR8216_REG_VTU_DATA, val);
 420         }
 421         op |= AR8216_VTU_ACTIVE;
 422         priv->write(priv, AR8216_REG_VTU, op);
 423 }
 424
 425 static int
 426 ar8216_hw_apply(struct switch_dev *dev)
 427 {
 428         struct ar8216_priv *priv = to_ar8216(dev);
 429         u8 portmask[AR8216_NUM_PORTS];
 430         int i, j;
 431
 432         mutex_lock(&priv->reg_mutex);
 433         /* flush all vlan translation unit entries */
 434         ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
 435
 436         memset(portmask, 0, sizeof(portmask));
 437         if (priv->vlan) {
 438                 /* calculate the port destination masks and load vlans
 439                  * into the vlan translation unit */
 440                 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
 441                         u8 vp = priv->vlan_table[j];
 442
 443                         if (!vp)
 444                                 continue;
 445
 446                         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 447                                 u8 mask = (1 << i);
 448                                 if (vp & mask)
 449                                         portmask[i] |= vp & ~mask;
 450                         }
 451
 452                         ar8216_vtu_op(priv,
 453                                 AR8216_VTU_OP_LOAD |
 454                                 (priv->vlan_id[j] << AR8216_VTU_VID_S),
 455                                 priv->vlan_table[j]);
 456                 }
 457         } else {
 458                 /* vlan disabled:
 459                  * isolate all ports, but connect them to the cpu port */
 460                 for (i = 0; i < AR8216_NUM_PORTS; i++) {
 461                         if (i == AR8216_PORT_CPU)
 462                                 continue;
 463
 464                         portmask[i] = 1 << AR8216_PORT_CPU;
 465                         portmask[AR8216_PORT_CPU] |= (1 << i);
 466                 }
 467         }
 468
 469         /* update the port destination mask registers and tag settings */
 470         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 471                 int egress, ingress;
 472                 int pvid;
 473
 474                 if (priv->vlan) {
 475                         pvid = priv->vlan_id[priv->pvid[i]];
 476                 } else {
 477                         pvid = i;
 478                 }
 479
 480                 if (priv->vlan && (priv->vlan_tagged & (1 << i))) {
 481                         egress = AR8216_OUT_ADD_VLAN;
 482                 } else {
 483                         egress = AR8216_OUT_STRIP_VLAN;
 484                 }
 485                 if (priv->vlan) {
 486                         ingress = AR8216_IN_SECURE;
 487                 } else {
 488                         ingress = AR8216_IN_PORT_ONLY;
 489                 }
 490
 491                 ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i),
 492                         AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
 493                         AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
 494                         AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
 495                         AR8216_PORT_CTRL_LEARN |
 496                           (priv->vlan && i == AR8216_PORT_CPU && (priv->chip == AR8216) ?
 497                            AR8216_PORT_CTRL_HEADER : 0) |
 498                           (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
 499                           (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
 500
 501                 ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i),
 502                         AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
 503                           AR8216_PORT_VLAN_DEFAULT_ID,
 504                         (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) |
 505                           (ingress << AR8216_PORT_VLAN_MODE_S) |
 506                           (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
 507         }
 508         mutex_unlock(&priv->reg_mutex);
 509         return 0;
 510 }
 511
 512 static int
 513 ar8316_hw_init(struct ar8216_priv *priv) {
 514         static int initialized;
 515         int i;
 516         u32 val;
 517         struct mii_bus *bus;
 518
 519         if (initialized)
 520                 return 0;
 521
 522         val = priv->read(priv, 0x8);
 523
 524         if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 525                 /* value taken from Ubiquiti RouterStation Pro */
 526                 if (val == 0x81461bea) {
 527                         /* switch already intialized by bootloader */
 528                         initialized = true;
 529                         return 0;
 530                 }
 531                 priv->write(priv, 0x8, 0x81461bea);
 532         } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
 533                 /* value taken from AVM Fritz!Box 7390 sources */
 534                 if (val == 0x010e5b71) {
 535                         /* switch already initialized by bootloader */
 536                         initialized = true;
 537                         return 0;
 538                 }
 539                 priv->write(priv, 0x8, 0x010e5b71);
 540         } else {
 541                 /* no known value for phy interface */
 542                 printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n",
 543                         priv->phy->interface);
 544                 return -EINVAL;
 545         }
 546
 547         /* standard atheros magic */
 548         priv->write(priv, 0x38, 0xc000050e);
 549
 550         /* Initialize the ports */
 551         bus = priv->phy->bus;
 552         for (i = 0; i < 5; i++) {
 553                 if ((i == 4) &&
 554                         priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
 555                         /* work around for phy4 rgmii mode */
 556                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x12);
 557                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x480c);
 558                         /* rx delay */
 559                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x0);
 560                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x824e);
 561                         /* tx delay */
 562                         bus->write(bus, i, MII_ATH_DBG_ADDR, 0x5);
 563                         bus->write(bus, i, MII_ATH_DBG_DATA, 0x3d47);
 564                         msleep(1000);
 565                 }
 566
 567                 /* initialize the port itself */
 568                 bus->write(bus, i, MII_ADVERTISE,
 569                         ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 570                 bus->write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL);
 571                 bus->write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
 572                 msleep(1000);
 573         }
 574         initialized = true;
 575         return 0;
 576 }
 577
 578 static int
 579 ar8216_reset_switch(struct switch_dev *dev)
 580 {
 581         struct ar8216_priv *priv = to_ar8216(dev);
 582         int i;
 583
 584         mutex_lock(&priv->reg_mutex);
 585         memset(&priv->vlan, 0, sizeof(struct ar8216_priv) -
 586                 offsetof(struct ar8216_priv, vlan));
 587         for (i = 0; i < AR8X16_MAX_VLANS; i++) {
 588                 priv->vlan_id[i] = i;
 589         }
 590         for (i = 0; i < AR8216_NUM_PORTS; i++) {
 591                 /* Enable port learning and tx */
 592                 priv->write(priv, AR8216_REG_PORT_CTRL(i),
 593                         AR8216_PORT_CTRL_LEARN |
 594                         (4 << AR8216_PORT_CTRL_STATE_S));
 595
 596                 priv->write(priv, AR8216_REG_PORT_VLAN(i), 0);
 597
 598                 /* Configure all PHYs */
 599                 if (i == AR8216_PORT_CPU) {
 600                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 601                                 AR8216_PORT_STATUS_LINK_UP |
 602                                 ((priv->chip == AR8316) ?
 603                                         AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) |
 604                                 AR8216_PORT_STATUS_TXMAC |
 605                                 AR8216_PORT_STATUS_RXMAC |
 606                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_RXFLOW : 0) |
 607                                 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_TXFLOW : 0) |
 608                                 AR8216_PORT_STATUS_DUPLEX);
 609                 } else {
 610                         priv->write(priv, AR8216_REG_PORT_STATUS(i),
 611                                 AR8216_PORT_STATUS_LINK_AUTO);
 612                 }
 613         }
 614         /* XXX: undocumented magic from atheros, required! */
 615         priv->write(priv, 0x38, 0xc000050e);
 616
 617         if (priv->chip == AR8216) {
 618                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 619                         AR8216_GCTRL_MTU, 1518 + 8 + 2);
 620         } else if (priv->chip == AR8316) {
 621                 /* enable jumbo frames */
 622                 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
 623                         AR8316_GCTRL_MTU, 9018 + 8 + 2);
 624         }
 625
 626         if (priv->chip == AR8316) {
 627                 /* enable cpu port to receive multicast and broadcast frames */
 628                 priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f);
 629         }
 630         mutex_unlock(&priv->reg_mutex);
 631         return ar8216_hw_apply(dev);
 632 }
 633
 634 static int
 635 ar8216_config_init(struct phy_device *pdev)
 636 {
 637         struct ar8216_priv *priv;
 638         struct net_device *dev = pdev->attached_dev;
 639         int ret;
 640
 641         priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
 642         if (priv == NULL)
 643                 return -ENOMEM;
 644
 645         priv->phy = pdev;
 646
 647         priv->chip = ar8216_id_chip(priv);
 648
 649         if (pdev->addr == 0)
 650                 printk(KERN_INFO "%s: AR%d switch driver attached.\n",
 651                         pdev->attached_dev->name, priv->chip);
 652
 653
 654         if (pdev->addr != 0) {
 655                 if (priv->chip == AR8316) {
 656                         pdev->supported |= SUPPORTED_1000baseT_Full;
 657                         pdev->advertising |= ADVERTISED_1000baseT_Full;
 658                 }
 659                 kfree(priv);
 660                 return 0;
 661         }
 662
 663         pdev->supported = priv->chip == AR8316 ?
 664                 SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full;
 665         pdev->advertising = pdev->supported;
 666
 667         mutex_init(&priv->reg_mutex);
 668         priv->read = ar8216_mii_read;
 669         priv->write = ar8216_mii_write;
 670         memcpy(&priv->dev, &athdev, sizeof(struct switch_dev));
 671         pdev->priv = priv;
 672
 673         if (priv->chip == AR8316) {
 674                 priv->dev.name = "Atheros AR8316";
 675                 priv->dev.vlans = AR8X16_MAX_VLANS;
 676                 /* port 5 connected to the other mac, therefore unusable */
 677                 priv->dev.ports = (AR8216_NUM_PORTS - 1);
 678         }
 679
 680         if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {
 681                 kfree(priv);
 682                 goto done;
 683         }
 684
 685         if (priv->chip == AR8316) {
 686                 ret = ar8316_hw_init(priv);
 687                 if (ret) {
 688                         kfree(priv);
 689                         goto done;
 690                 }
 691         }
 692
 693         ret = ar8216_reset_switch(&priv->dev);
 694         if (ret) {
 695                 kfree(priv);
 696                 goto done;
 697         }
 698
 699         dev->phy_ptr = priv;
 700
 701         /* VID fixup only needed on ar8216 */
 702         if (pdev->addr == 0 && priv->chip == AR8216) {
 703                 pdev->pkt_align = 2;
 704                 pdev->netif_receive_skb = ar8216_netif_receive_skb;
 705                 pdev->netif_rx = ar8216_netif_rx;
 706                 priv->ndo_old = dev->netdev_ops;
 707                 memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
 708                 priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
 709                 dev->netdev_ops = &priv->ndo;
 710         }
 711
 712 done:
 713         return ret;
 714 }
 715
 716 static int
 717 ar8216_read_status(struct phy_device *phydev)
 718 {
 719         struct ar8216_priv *priv = phydev->priv;
 720         int ret;
 721         if (phydev->addr != 0) {
 722                 return genphy_read_status(phydev);
 723         }
 724
 725         phydev->speed = priv->chip == AR8316 ? SPEED_1000 : SPEED_100;
 726         phydev->duplex = DUPLEX_FULL;
 727         phydev->link = 1;
 728
 729         /* flush the address translation unit */
 730         mutex_lock(&priv->reg_mutex);
 731         ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0);
 732
 733         if (!ret)
 734                 priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
 735         else
 736                 ret = -ETIMEDOUT;
 737         mutex_unlock(&priv->reg_mutex);
 738
 739         phydev->state = PHY_RUNNING;
 740         netif_carrier_on(phydev->attached_dev);
 741         phydev->adjust_link(phydev->attached_dev);
 742
 743         return ret;
 744 }
 745
 746 static int
 747 ar8216_config_aneg(struct phy_device *phydev)
 748 {
 749         if (phydev->addr == 0)
 750                 return 0;
 751
 752         return genphy_config_aneg(phydev);
 753 }
 754
 755 static int
 756 ar8216_probe(struct phy_device *pdev)
 757 {
 758         struct ar8216_priv priv;
 759         u16 chip;
 760
 761         priv.phy = pdev;
 762         chip = ar8216_id_chip(&priv);
 763         if (chip == UNKNOWN)
 764                 return -ENODEV;
 765
 766         return 0;
 767 }
 768
 769 static void
 770 ar8216_remove(struct phy_device *pdev)
 771 {
 772         struct ar8216_priv *priv = pdev->priv;
 773         struct net_device *dev = pdev->attached_dev;
 774
 775         if (!priv)
 776                 return;
 777
 778         if (priv->ndo_old && dev)
 779                 dev->netdev_ops = priv->ndo_old;
 780         if (pdev->addr == 0)
 781                 unregister_switch(&priv->dev);
 782         kfree(priv);
 783 }
 784
 785 /* template */
 786 static struct switch_dev athdev = {
 787         .name = "Atheros AR8216",
 788         .cpu_port = AR8216_PORT_CPU,
 789         .ports = AR8216_NUM_PORTS,
 790         .vlans = AR8216_NUM_VLANS,
 791         .attr_global = {
 792                 .attr = ar8216_globals,
 793                 .n_attr = ARRAY_SIZE(ar8216_globals),
 794         },
 795         .attr_port = {
 796                 .attr = ar8216_port,
 797                 .n_attr = ARRAY_SIZE(ar8216_port),
 798         },
 799         .attr_vlan = {
 800                 .attr = ar8216_vlan,
 801                 .n_attr = ARRAY_SIZE(ar8216_vlan),
 802         },
 803         .get_port_pvid = ar8216_get_pvid,
 804         .set_port_pvid = ar8216_set_pvid,
 805         .get_vlan_ports = ar8216_get_ports,
 806         .set_vlan_ports = ar8216_set_ports,
 807         .apply_config = ar8216_hw_apply,
 808         .reset_switch = ar8216_reset_switch,
 809 };
 810
 811 static struct phy_driver ar8216_driver = {
 812         .phy_id         = 0x004d0000,
 813         .name           = "Atheros AR8216/AR8316",
 814         .phy_id_mask    = 0xffff0000,
 815         .features       = PHY_BASIC_FEATURES,
 816         .probe          = ar8216_probe,
 817         .remove         = ar8216_remove,
 818         .config_init    = &ar8216_config_init,
 819         .config_aneg    = &ar8216_config_aneg,
 820         .read_status    = &ar8216_read_status,
 821         .driver         = { .owner = THIS_MODULE },
 822 };
 823
 824 int __init
 825 ar8216_init(void)
 826 {
 827         return phy_driver_register(&ar8216_driver);
 828 }
 829
 830 void __exit
 831 ar8216_exit(void)
 832 {
 833         phy_driver_unregister(&ar8216_driver);
 834 }
 835
 836 module_init(ar8216_init);
 837 module_exit(ar8216_exit);
 838 MODULE_LICENSE("GPL");
 839