package/switch/src/switch-robo.c

   1 /*
   2  * Broadcom BCM5325E/536x switch configuration module
   3  *
   4  * Copyright (C) 2005 Felix Fietkau <nbd@nbd.name>
   5  * Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
   6  * Based on 'robocfg' by Oleg I. Vdovikin
   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  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  * 02110-1301, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/init.h>
  26 #include <linux/if.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/sockios.h>
  29 #include <linux/ethtool.h>
  30 #include <linux/mii.h>
  31 #include <linux/delay.h>
  32 #include <asm/uaccess.h>
  33
  34 #include "switch-core.h"
  35 #include "etc53xx.h"
  36
  37 #ifdef CONFIG_BCM47XX
  38 #include <bcm47xx_nvram.h>
  39 #endif
  40
  41 #define DRIVER_NAME             "bcm53xx"
  42 #define DRIVER_VERSION          "0.02"
  43 #define PFX                     "roboswitch: "
  44
  45 #define ROBO_PHY_ADDR           0x1E    /* robo switch phy address */
  46 #define ROBO_PHY_ADDR_TG3       0x01    /* Tigon3 PHY address */
  47 #define ROBO_PHY_ADDR_BCM63XX   0x00    /* BCM63XX PHY address */
  48
  49 /* MII registers */
  50 #define REG_MII_PAGE    0x10    /* MII Page register */
  51 #define REG_MII_ADDR    0x11    /* MII Address register */
  52 #define REG_MII_DATA0   0x18    /* MII Data register 0 */
  53
  54 #define REG_MII_PAGE_ENABLE     1
  55 #define REG_MII_ADDR_WRITE      1
  56 #define REG_MII_ADDR_READ       2
  57
  58 /* Robo device ID register (in ROBO_MGMT_PAGE) */
  59 #define ROBO_DEVICE_ID          0x30
  60 #define  ROBO_DEVICE_ID_5325    0x25 /* Faked */
  61 #define  ROBO_DEVICE_ID_5395    0x95
  62 #define  ROBO_DEVICE_ID_5397    0x97
  63 #define  ROBO_DEVICE_ID_5398    0x98
  64 #define  ROBO_DEVICE_ID_53115   0x3115
  65
  66 /* Private et.o ioctls */
  67 #define SIOCGETCPHYRD           (SIOCDEVPRIVATE + 9)
  68 #define SIOCSETCPHYWR           (SIOCDEVPRIVATE + 10)
  69
  70 /* Data structure for a Roboswitch device. */
  71 struct robo_switch {
  72         char *device;                   /* The device name string (ethX) */
  73         u16 devid;                      /* ROBO_DEVICE_ID_53xx */
  74         bool is_5350;
  75         u8 gmii;                        /* gigabit mii */
  76         struct ifreq ifr;
  77         struct net_device *dev;
  78         unsigned char port[6];
  79 };
  80
  81 /* Currently we can only have one device in the system. */
  82 static struct robo_switch robo;
  83
  84
  85 static int do_ioctl(int cmd)
  86 {
  87         mm_segment_t old_fs = get_fs();
  88         int ret;
  89
  90         set_fs(KERNEL_DS);
  91         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  92         set_fs(old_fs);
  93
  94         return ret;
  95 }
  96
  97 static u16 mdio_read(__u16 phy_id, __u8 reg)
  98 {
  99         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 100         int err;
 101
 102         mii->phy_id = phy_id;
 103         mii->reg_num = reg;
 104
 105         err = do_ioctl(SIOCGMIIREG);
 106         if (err < 0) {
 107                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 108
 109                 return 0xffff;
 110         }
 111
 112         return mii->val_out;
 113 }
 114
 115 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 116 {
 117         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 118         int err;
 119
 120         mii->phy_id = phy_id;
 121         mii->reg_num = reg;
 122         mii->val_in = val;
 123
 124         err = do_ioctl(SIOCSMIIREG);
 125         if (err < 0) {
 126                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 127                 return;
 128         }
 129 }
 130
 131 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 132 {
 133         int i = 3;
 134
 135         /* set page number */
 136         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 137                 (page << 8) | REG_MII_PAGE_ENABLE);
 138
 139         /* set register address */
 140         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 141                 (reg << 8) | op);
 142
 143         /* check if operation completed */
 144         while (i--) {
 145                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 146                         return 0;
 147         }
 148
 149         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 150
 151         return 1;
 152 }
 153
 154 /*
 155 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 156 {
 157         int i;
 158
 159         robo_reg(page, reg, REG_MII_ADDR_READ);
 160
 161         for (i = 0; i < count; i++)
 162                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 163 }
 164 */
 165
 166 static __u16 robo_read16(__u8 page, __u8 reg)
 167 {
 168         robo_reg(page, reg, REG_MII_ADDR_READ);
 169
 170         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 171 }
 172
 173 static __u32 robo_read32(__u8 page, __u8 reg)
 174 {
 175         robo_reg(page, reg, REG_MII_ADDR_READ);
 176
 177         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 178                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 179 }
 180
 181 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 182 {
 183         /* write data */
 184         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 185
 186         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 187 }
 188
 189 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 190 {
 191         /* write data */
 192         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 193         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 194
 195         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 196 }
 197
 198 /* checks that attached switch is 5325/5352/5354/5356/5357/53115 */
 199 static int robo_vlan5350(__u32 phyid)
 200 {
 201         /* set vlan access id to 15 and read it back */
 202         __u16 val16 = 15;
 203         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 204
 205         /* 5365 will refuse this as it does not have this reg */
 206         if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) != val16)
 207                 return 0;
 208         /* gigabit ? */
 209         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 210                 robo.gmii = ((mdio_read(0, 0x0f) & 0xf000) != 0);
 211         /* 53115 ? */
 212         if (robo.gmii && robo_read32(ROBO_STAT_PAGE, ROBO_LSA_IM_PORT) != 0) {
 213                 robo_write16(ROBO_ARLIO_PAGE, ROBO_VTBL_INDX_5395, val16);
 214                 robo_write16(ROBO_ARLIO_PAGE, ROBO_VTBL_ACCESS_5395,
 215                                          (1 << 7) /* start */ | 1 /* read */);
 216                 if (robo_read16(ROBO_ARLIO_PAGE, ROBO_VTBL_ACCESS_5395) == 1 &&
 217                     robo_read16(ROBO_ARLIO_PAGE, ROBO_VTBL_INDX_5395) == val16)
 218                         return 4;
 219         }
 220         /* dirty trick for 5356/5357 */
 221         if ((phyid & 0xfff0ffff ) == 0x5da00362 ||
 222             (phyid & 0xfff0ffff ) == 0x5e000362)
 223                 return 3;
 224         /* 5325/5352/5354*/
 225         return 1;
 226 }
 227
 228 static int robo_switch_enable(void)
 229 {
 230         unsigned int i, last_port;
 231         u16 val;
 232 #ifdef CONFIG_BCM47XX
 233         char buf[20];
 234 #endif
 235
 236         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 237         if (!(val & (1 << 1))) {
 238                 /* Unmanaged mode */
 239                 val &= ~(1 << 0);
 240                 /* With forwarding */
 241                 val |= (1 << 1);
 242                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 243                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 244                 if (!(val & (1 << 1))) {
 245                         printk(KERN_ERR PFX "Failed to enable switch\n");
 246                         return -EBUSY;
 247                 }
 248
 249                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 250                                 ROBO_PORT6_CTRL : ROBO_PORT3_CTRL;
 251                 for (i = ROBO_PORT0_CTRL; i < last_port + 1; i++)
 252                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 253         }
 254
 255 #ifdef CONFIG_BCM47XX
 256         /* WAN port LED, except for Netgear WGT634U */
 257         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 258                 if (strcmp(buf, "cfe") != 0)
 259                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 260         }
 261 #endif
 262         return 0;
 263 }
 264
 265 static void robo_switch_reset(void)
 266 {
 267         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 268             (robo.devid == ROBO_DEVICE_ID_5397) ||
 269             (robo.devid == ROBO_DEVICE_ID_5398)) {
 270                 /* Trigger a software reset. */
 271                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 272                 mdelay(500);
 273                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 274         }
 275 }
 276
 277 static int robo_probe(char *devname)
 278 {
 279         __u32 phyid;
 280         unsigned int i;
 281         int err = 1;
 282         struct mii_ioctl_data *mii;
 283
 284         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 285         strcpy(robo.ifr.ifr_name, devname);
 286
 287         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 288                 printk(KERN_ERR PFX "No such device\n");
 289                 return 1;
 290         }
 291         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 292                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 293                 return 1;
 294         }
 295
 296         robo.device = devname;
 297         for (i = 0; i < 5; i++)
 298                 robo.port[i] = i;
 299         robo.port[5] = 8;
 300
 301         /* try access using MII ioctls - get phy address */
 302         err = do_ioctl(SIOCGMIIPHY);
 303         if (err < 0) {
 304                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 305                 goto done;
 306         }
 307
 308         /* got phy address check for robo address */
 309         mii = if_mii(&robo.ifr);
 310         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 311             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 312             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 313                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 314                 goto done;
 315         }
 316
 317         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 318                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 319
 320         if (phyid == 0xffffffff || phyid == 0x55210022) {
 321                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 322                 goto done;
 323         }
 324
 325         /* Get the device ID */
 326         for (i = 0; i < 10; i++) {
 327                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 328                 if (robo.devid)
 329                         break;
 330                 udelay(10);
 331         }
 332         if (!robo.devid)
 333                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 334         robo.is_5350 = robo_vlan5350(phyid);
 335
 336         robo_switch_reset();
 337         err = robo_switch_enable();
 338         if (err)
 339                 goto done;
 340         err = 0;
 341
 342         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 343                 robo.is_5350 ? " It's a 5350." : "", devname);
 344
 345 done:
 346         if (err) {
 347                 dev_put(robo.dev);
 348                 robo.dev = NULL;
 349         }
 350         return err;
 351 }
 352
 353
 354 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 355 {
 356         __u16 val16;
 357         int len = 0;
 358         int j;
 359
 360         val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
 361
 362         if (robo.is_5350) {
 363                 u32 val32;
 364                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 365                 /* actual read */
 366                 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 367                 if ((val32 & (1 << 20)) /* valid */) {
 368                         for (j = 0; j < 6; j++) {
 369                                 if (val32 & (1 << j)) {
 370                                         len += sprintf(buf + len, "%d", j);
 371                                         if (val32 & (1 << (j + 6))) {
 372                                                 if (j == 5) buf[len++] = 'u';
 373                                         } else {
 374                                                 buf[len++] = 't';
 375                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 376                                                         buf[len++] = '*';
 377                                         }
 378                                         buf[len++] = '\t';
 379                                 }
 380                         }
 381                         len += sprintf(buf + len, "\n");
 382                 }
 383         } else {
 384                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 385                 /* actual read */
 386                 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 387                 if ((val16 & (1 << 14)) /* valid */) {
 388                         for (j = 0; j < 6; j++) {
 389                                 if (val16 & (1 << j)) {
 390                                         len += sprintf(buf + len, "%d", j);
 391                                         if (val16 & (1 << (j + 7))) {
 392                                                 if (j == 5) buf[len++] = 'u';
 393                                         } else {
 394                                                 buf[len++] = 't';
 395                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 396                                                         buf[len++] = '*';
 397                                         }
 398                                         buf[len++] = '\t';
 399                                 }
 400                         }
 401                         len += sprintf(buf + len, "\n");
 402                 }
 403         }
 404
 405         buf[len] = '\0';
 406
 407         return len;
 408 }
 409
 410 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 411 {
 412         switch_driver *d = (switch_driver *) driver;
 413         switch_vlan_config *c = switch_parse_vlan(d, buf);
 414         int j;
 415         __u16 val16;
 416
 417         if (c == NULL)
 418                 return -EINVAL;
 419
 420         for (j = 0; j < d->ports; j++) {
 421                 if ((c->untag | c->pvid) & (1 << j))
 422                         /* change default vlan tag */
 423                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 424         }
 425
 426         /* write config now */
 427
 428         if (robo.devid != ROBO_DEVICE_ID_5325) {
 429                 __u8 regoff = ((robo.devid == ROBO_DEVICE_ID_5395) ||
 430                         (robo.devid == ROBO_DEVICE_ID_53115)) ? 0x20 : 0;
 431
 432                 robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
 433                 robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
 434                 robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
 435                 kfree(c);
 436                 return 0;
 437         }
 438
 439         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 440         if (robo.is_5350) {
 441                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
 442                         (1 << 20) /* valid */ | (c->untag << 6) | c->port);
 443                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 444         } else {
 445                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
 446                         (1 << 14)  /* valid */ | (c->untag << 7) | c->port);
 447                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 448         }
 449
 450         kfree(c);
 451         return 0;
 452 }
 453
 454 #define set_switch(state) \
 455         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 456
 457 static int handle_enable_read(void *driver, char *buf, int nr)
 458 {
 459         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 460 }
 461
 462 static int handle_enable_write(void *driver, char *buf, int nr)
 463 {
 464         set_switch(buf[0] == '1');
 465
 466         return 0;
 467 }
 468
 469 static int handle_port_enable_read(void *driver, char *buf, int nr)
 470 {
 471         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 472 }
 473
 474 static int handle_port_enable_write(void *driver, char *buf, int nr)
 475 {
 476         u16 val16;
 477
 478         if (buf[0] == '0')
 479                 val16 = 3; /* disabled */
 480         else if (buf[0] == '1')
 481                 val16 = 0; /* enabled */
 482         else
 483                 return -EINVAL;
 484
 485         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 486                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 487
 488         return 0;
 489 }
 490
 491 static int handle_port_media_read(void *driver, char *buf, int nr)
 492 {
 493         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 494         int media, len;
 495
 496         if (bmcr & BMCR_ANENABLE)
 497                 media = SWITCH_MEDIA_AUTO;
 498         else {
 499                 if (bmcr & BMCR_SPEED1000)
 500                         media = SWITCH_MEDIA_1000;
 501                 else if (bmcr & BMCR_SPEED100)
 502                         media = SWITCH_MEDIA_100;
 503                 else
 504                         media = 0;
 505
 506                 if (bmcr & BMCR_FULLDPLX)
 507                         media |= SWITCH_MEDIA_FD;
 508         }
 509
 510         len = switch_print_media(buf, media);
 511         return len + sprintf(buf + len, "\n");
 512 }
 513
 514 static int handle_port_media_write(void *driver, char *buf, int nr)
 515 {
 516         int media = switch_parse_media(buf);
 517         u16 bmcr, bmcr_mask;
 518
 519         if (media & SWITCH_MEDIA_AUTO)
 520                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 521         else {
 522                 if (media & SWITCH_MEDIA_1000) {
 523                         if (!robo.gmii)
 524                                 return -EINVAL;
 525                         bmcr = BMCR_SPEED1000;
 526                 }
 527                 else if (media & SWITCH_MEDIA_100)
 528                         bmcr = BMCR_SPEED100;
 529                 else
 530                         bmcr = 0;
 531
 532                 if (media & SWITCH_MEDIA_FD)
 533                         bmcr |= BMCR_FULLDPLX;
 534         }
 535
 536         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 537         mdio_write(robo.port[nr], MII_BMCR,
 538                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 539
 540         return 0;
 541 }
 542
 543 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 544 {
 545         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 546 }
 547
 548 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 549 {
 550         int disable = ((buf[0] != '1') ? 1 : 0);
 551
 552         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 553                 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 554         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 555                 (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 556                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 557
 558         if (robo.devid != ROBO_DEVICE_ID_5325)
 559                 return 0;
 560
 561         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 562                 (1 << 6) /* drop invalid VID frames */);
 563         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 564                 (1 << 3) /* drop miss V table frames */);
 565
 566         return 0;
 567 }
 568
 569 static int handle_reset(void *driver, char *buf, int nr)
 570 {
 571         switch_driver *d = (switch_driver *) driver;
 572         int j;
 573         __u16 val16;
 574
 575         /* disable switching */
 576         set_switch(0);
 577
 578         /* reset vlans */
 579         for (j = 0; j <= ((robo.is_5350) ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) {
 580                 /* write config now */
 581                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 582                 if (robo.is_5350)
 583                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, 0);
 584                 else
 585                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 586                 robo_write16(ROBO_VLAN_PAGE, robo.is_5350 ? ROBO_VLAN_TABLE_ACCESS_5350 :
 587                                                             ROBO_VLAN_TABLE_ACCESS,
 588                              val16);
 589         }
 590
 591         /* reset ports to a known good state */
 592         for (j = 0; j < d->ports; j++) {
 593                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 594                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 595         }
 596
 597         /* enable switching */
 598         set_switch(1);
 599
 600         /* enable vlans */
 601         handle_enable_vlan_write(driver, "1", 0);
 602
 603         return 0;
 604 }
 605
 606 static int __init robo_init(void)
 607 {
 608         int notfound = 1;
 609         char *device;
 610
 611         device = strdup("ethX");
 612         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 613                 if (! switch_device_registered (device))
 614                         notfound = robo_probe(device);
 615         }
 616         device[3]--;
 617
 618         if (notfound) {
 619                 kfree(device);
 620                 return -ENODEV;
 621         } else {
 622                 static const switch_config cfg[] = {
 623                         {
 624                                 .name   = "enable",
 625                                 .read   = handle_enable_read,
 626                                 .write  = handle_enable_write
 627                         }, {
 628                                 .name   = "enable_vlan",
 629                                 .read   = handle_enable_vlan_read,
 630                                 .write  = handle_enable_vlan_write
 631                         }, {
 632                                 .name   = "reset",
 633                                 .read   = NULL,
 634                                 .write  = handle_reset
 635                         }, { NULL, },
 636                 };
 637                 static const switch_config port[] = {
 638                         {
 639                                 .name   = "enable",
 640                                 .read   = handle_port_enable_read,
 641                                 .write  = handle_port_enable_write
 642                         }, {
 643                                 .name   = "media",
 644                                 .read   = handle_port_media_read,
 645                                 .write  = handle_port_media_write
 646                         }, { NULL, },
 647                 };
 648                 static const switch_config vlan[] = {
 649                         {
 650                                 .name   = "ports",
 651                                 .read   = handle_vlan_port_read,
 652                                 .write  = handle_vlan_port_write
 653                         }, { NULL, },
 654                 };
 655                 switch_driver driver = {
 656                         .name                   = DRIVER_NAME,
 657                         .version                = DRIVER_VERSION,
 658                         .interface              = device,
 659                         .cpuport                = 5,
 660                         .ports                  = 6,
 661                         .vlans                  = 16,
 662                         .driver_handlers        = cfg,
 663                         .port_handlers          = port,
 664                         .vlan_handlers          = vlan,
 665                 };
 666                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 667                         driver.ports = 9;
 668                         driver.cpuport = 8;
 669                 }
 670
 671                 return switch_register_driver(&driver);
 672         }
 673 }
 674
 675 static void __exit robo_exit(void)
 676 {
 677         switch_unregister_driver(DRIVER_NAME);
 678         if (robo.dev)
 679                 dev_put(robo.dev);
 680         kfree(robo.device);
 681 }
 682
 683
 684 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 685 MODULE_LICENSE("GPL");
 686
 687 module_init(robo_init);
 688 module_exit(robo_exit);