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 <linux/gpio.h>
  33 #include <asm/uaccess.h>
  34
  35 #include "switch-core.h"
  36 #include "etc53xx.h"
  37
  38 #ifdef CONFIG_BCM47XX
  39 #include <bcm47xx_nvram.h>
  40 #endif
  41
  42 #define DRIVER_NAME             "bcm53xx"
  43 #define DRIVER_VERSION          "0.02"
  44 #define PFX                     "roboswitch: "
  45
  46 #define ROBO_PHY_ADDR           0x1E    /* robo switch phy address */
  47 #define ROBO_PHY_ADDR_TG3       0x01    /* Tigon3 PHY address */
  48 #define ROBO_PHY_ADDR_BCM63XX   0x00    /* BCM63XX PHY address */
  49
  50 /* MII registers */
  51 #define REG_MII_PAGE    0x10    /* MII Page register */
  52 #define REG_MII_ADDR    0x11    /* MII Address register */
  53 #define REG_MII_DATA0   0x18    /* MII Data register 0 */
  54
  55 #define REG_MII_PAGE_ENABLE     1
  56 #define REG_MII_ADDR_WRITE      1
  57 #define REG_MII_ADDR_READ       2
  58
  59 /* Robo device ID register (in ROBO_MGMT_PAGE) */
  60 #define ROBO_DEVICE_ID          0x30
  61 #define  ROBO_DEVICE_ID_5325    0x25 /* Faked */
  62 #define  ROBO_DEVICE_ID_5395    0x95
  63 #define  ROBO_DEVICE_ID_5397    0x97
  64 #define  ROBO_DEVICE_ID_5398    0x98
  65 #define  ROBO_DEVICE_ID_53115   0x3115
  66
  67 /* Private et.o ioctls */
  68 #define SIOCGETCPHYRD           (SIOCDEVPRIVATE + 9)
  69 #define SIOCSETCPHYWR           (SIOCDEVPRIVATE + 10)
  70
  71 /* Data structure for a Roboswitch device. */
  72 struct robo_switch {
  73         char *device;                   /* The device name string (ethX) */
  74         u16 devid;                      /* ROBO_DEVICE_ID_53xx */
  75         bool is_5365;
  76         bool gmii;                      /* gigabit mii */
  77         int gpio_robo_reset;
  78         int gpio_lanports_enable;
  79         struct ifreq ifr;
  80         struct net_device *dev;
  81         unsigned char port[9];
  82 };
  83
  84 /* Currently we can only have one device in the system. */
  85 static struct robo_switch robo;
  86
  87
  88 static int do_ioctl(int cmd)
  89 {
  90         mm_segment_t old_fs = get_fs();
  91         int ret;
  92
  93         set_fs(KERNEL_DS);
  94         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  95         set_fs(old_fs);
  96
  97         return ret;
  98 }
  99
 100 static u16 mdio_read(__u16 phy_id, __u8 reg)
 101 {
 102         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 103         int err;
 104
 105         mii->phy_id = phy_id;
 106         mii->reg_num = reg;
 107
 108         err = do_ioctl(SIOCGMIIREG);
 109         if (err < 0) {
 110                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 111
 112                 return 0xffff;
 113         }
 114
 115         return mii->val_out;
 116 }
 117
 118 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 119 {
 120         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 121         int err;
 122
 123         mii->phy_id = phy_id;
 124         mii->reg_num = reg;
 125         mii->val_in = val;
 126
 127         err = do_ioctl(SIOCSMIIREG);
 128         if (err < 0) {
 129                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 130                 return;
 131         }
 132 }
 133
 134 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 135 {
 136         int i = 3;
 137
 138         /* set page number */
 139         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 140                 (page << 8) | REG_MII_PAGE_ENABLE);
 141
 142         /* set register address */
 143         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 144                 (reg << 8) | op);
 145
 146         /* check if operation completed */
 147         while (i--) {
 148                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 149                         return 0;
 150         }
 151
 152         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 153
 154         return 1;
 155 }
 156
 157 /*
 158 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 159 {
 160         int i;
 161
 162         robo_reg(page, reg, REG_MII_ADDR_READ);
 163
 164         for (i = 0; i < count; i++)
 165                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 166 }
 167 */
 168
 169 static __u16 robo_read16(__u8 page, __u8 reg)
 170 {
 171         robo_reg(page, reg, REG_MII_ADDR_READ);
 172
 173         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 174 }
 175
 176 static __u32 robo_read32(__u8 page, __u8 reg)
 177 {
 178         robo_reg(page, reg, REG_MII_ADDR_READ);
 179
 180         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 181                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 182 }
 183
 184 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 185 {
 186         /* write data */
 187         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 188
 189         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 190 }
 191
 192 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 193 {
 194         /* write data */
 195         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 196         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 197
 198         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 199 }
 200
 201 /* checks that attached switch is 5365 */
 202 static bool robo_bcm5365(void)
 203 {
 204         /* set vlan access id to 15 and read it back */
 205         __u16 val16 = 15;
 206         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 207
 208         /* 5365 will refuse this as it does not have this reg */
 209         return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
 210 }
 211
 212 static bool robo_gmii(void)
 213 {
 214         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 215                 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
 216         return false;
 217 }
 218
 219 static int robo_switch_enable(void)
 220 {
 221         unsigned int i, last_port;
 222         u16 val;
 223 #ifdef CONFIG_BCM47XX
 224         char buf[20];
 225 #endif
 226
 227         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 228         if (!(val & (1 << 1))) {
 229                 /* Unmanaged mode */
 230                 val &= ~(1 << 0);
 231                 /* With forwarding */
 232                 val |= (1 << 1);
 233                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 234                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 235                 if (!(val & (1 << 1))) {
 236                         printk(KERN_ERR PFX "Failed to enable switch\n");
 237                         return -EBUSY;
 238                 }
 239
 240                 /* No spanning tree for unmanaged mode */
 241                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 242                                 ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
 243                 for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
 244                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 245
 246                 /* No spanning tree on IMP port too */
 247                 robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
 248         }
 249
 250 #ifdef CONFIG_BCM47XX
 251         /* WAN port LED, except for Netgear WGT634U */
 252         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 253                 if (strcmp(buf, "cfe") != 0)
 254                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 255         }
 256 #endif
 257         return 0;
 258 }
 259
 260 static void robo_switch_reset(void)
 261 {
 262         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 263             (robo.devid == ROBO_DEVICE_ID_5397) ||
 264             (robo.devid == ROBO_DEVICE_ID_5398)) {
 265                 /* Trigger a software reset. */
 266                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 267                 mdelay(500);
 268                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 269         }
 270 }
 271
 272 #ifdef CONFIG_BCM47XX
 273 static int get_gpio_pin(const char *name)
 274 {
 275         int i, err;
 276         char nvram_var[10];
 277         char buf[30];
 278
 279         for (i = 0; i < 16; i++) {
 280                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
 281                 if (err <= 0)
 282                         continue;
 283                 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
 284                 if (err <= 0)
 285                         continue;
 286                 if (!strcmp(name, buf))
 287                         return i;
 288         }
 289         return -1;
 290 }
 291 #endif
 292
 293 static int robo_probe(char *devname)
 294 {
 295         __u32 phyid;
 296         unsigned int i;
 297         int err = -1;
 298         struct mii_ioctl_data *mii;
 299
 300         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 301         strcpy(robo.ifr.ifr_name, devname);
 302
 303         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 304                 printk(KERN_ERR PFX "No such device\n");
 305                 err = -ENODEV;
 306                 goto err_done;
 307         }
 308         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 309                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 310                 err = -ENXIO;
 311                 goto err_put;
 312         }
 313
 314         robo.device = devname;
 315
 316         /* try access using MII ioctls - get phy address */
 317         err = do_ioctl(SIOCGMIIPHY);
 318         if (err < 0) {
 319                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 320                 goto err_put;
 321         }
 322
 323         /* got phy address check for robo address */
 324         mii = if_mii(&robo.ifr);
 325         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 326             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 327             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 328                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 329                 err = -ENODEV;
 330                 goto err_put;
 331         }
 332
 333 #ifdef CONFIG_BCM47XX
 334         robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
 335         if (robo.gpio_lanports_enable >= 0) {
 336                 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
 337                 if (err) {
 338                         printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
 339                                err, robo.gpio_lanports_enable);
 340                         goto err_put;
 341                 }
 342                 gpio_direction_output(robo.gpio_lanports_enable, 1);
 343                 mdelay(5);
 344         }
 345
 346         robo.gpio_robo_reset = get_gpio_pin("robo_reset");
 347         if (robo.gpio_robo_reset >= 0) {
 348                 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
 349                 if (err) {
 350                         printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
 351                                err, robo.gpio_robo_reset);
 352                         goto err_gpio_robo;
 353                 }
 354                 gpio_set_value(robo.gpio_robo_reset, 0);
 355                 gpio_direction_output(robo.gpio_robo_reset, 1);
 356                 gpio_set_value(robo.gpio_robo_reset, 0);
 357                 mdelay(50);
 358
 359                 gpio_set_value(robo.gpio_robo_reset, 1);
 360                 mdelay(20);
 361         } else {
 362                 // TODO: reset the internal robo switch
 363         }
 364 #endif
 365
 366         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 367                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 368
 369         if (phyid == 0xffffffff || phyid == 0x55210022) {
 370                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 371                 err = -ENODEV;
 372                 goto err_gpio_lanports;
 373         }
 374
 375         /* Get the device ID */
 376         for (i = 0; i < 10; i++) {
 377                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 378                 if (robo.devid)
 379                         break;
 380                 udelay(10);
 381         }
 382         if (!robo.devid)
 383                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 384         if (robo.devid == ROBO_DEVICE_ID_5325)
 385                 robo.is_5365 = robo_bcm5365();
 386         else
 387                 robo.is_5365 = false;
 388
 389         robo.gmii = robo_gmii();
 390         if (robo.devid == ROBO_DEVICE_ID_5325) {
 391                 for (i = 0; i < 5; i++)
 392                         robo.port[i] = i;
 393         } else {
 394                 for (i = 0; i < 8; i++)
 395                         robo.port[i] = i;
 396         }
 397         robo.port[i] = ROBO_IM_PORT_CTRL;
 398
 399         robo_switch_reset();
 400         err = robo_switch_enable();
 401         if (err)
 402                 goto err_gpio_lanports;
 403
 404         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 405                 robo.is_5365 ? " It's a BCM5365." : "", devname);
 406
 407         return 0;
 408
 409 err_gpio_lanports:
 410         if (robo.gpio_lanports_enable >= 0)
 411                 gpio_free(robo.gpio_lanports_enable);
 412 err_gpio_robo:
 413         if (robo.gpio_robo_reset >= 0)
 414                 gpio_free(robo.gpio_robo_reset);
 415 err_put:
 416         dev_put(robo.dev);
 417         robo.dev = NULL;
 418 err_done:
 419         return err;
 420 }
 421
 422
 423 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 424 {
 425         __u16 val16;
 426         int len = 0;
 427         int j;
 428
 429         val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
 430
 431         if (robo.is_5365) {
 432                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 433                 /* actual read */
 434                 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 435                 if ((val16 & (1 << 14)) /* valid */) {
 436                         for (j = 0; j < 6; j++) {
 437                                 if (val16 & (1 << j)) {
 438                                         len += sprintf(buf + len, "%d", j);
 439                                         if (val16 & (1 << (j + 7))) {
 440                                                 if (j == 5)
 441                                                         buf[len++] = 'u';
 442                                         } else {
 443                                                 buf[len++] = 't';
 444                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 445                                                         buf[len++] = '*';
 446                                         }
 447                                         buf[len++] = '\t';
 448                                 }
 449                         }
 450                         len += sprintf(buf + len, "\n");
 451                 }
 452         } else {
 453                 u32 val32;
 454                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 455                 /* actual read */
 456                 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 457                 if ((val32 & (1 << 20)) /* valid */) {
 458                         for (j = 0; j < 6; j++) {
 459                                 if (val32 & (1 << j)) {
 460                                         len += sprintf(buf + len, "%d", j);
 461                                         if (val32 & (1 << (j + 6))) {
 462                                                 if (j == 5)
 463                                                         buf[len++] = 'u';
 464                                         } else {
 465                                                 buf[len++] = 't';
 466                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 467                                                         buf[len++] = '*';
 468                                         }
 469                                         buf[len++] = '\t';
 470                                 }
 471                         }
 472                         len += sprintf(buf + len, "\n");
 473                 }
 474         }
 475
 476         buf[len] = '\0';
 477
 478         return len;
 479 }
 480
 481 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 482 {
 483         switch_driver *d = (switch_driver *) driver;
 484         switch_vlan_config *c = switch_parse_vlan(d, buf);
 485         int j;
 486         __u16 val16;
 487
 488         if (c == NULL)
 489                 return -EINVAL;
 490
 491         for (j = 0; j < d->ports; j++) {
 492                 if ((c->untag | c->pvid) & (1 << j))
 493                         /* change default vlan tag */
 494                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 495         }
 496
 497         /* write config now */
 498
 499         if (robo.devid != ROBO_DEVICE_ID_5325) {
 500                 __u8 regoff = ((robo.devid == ROBO_DEVICE_ID_5395) ||
 501                         (robo.devid == ROBO_DEVICE_ID_53115)) ? 0x20 : 0;
 502
 503                 robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
 504                 robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
 505                 robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
 506                 kfree(c);
 507                 return 0;
 508         }
 509
 510         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 511         if (robo.is_5365) {
 512                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
 513                         (1 << 14)  /* valid */ | (c->untag << 7) | c->port);
 514                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 515         } else {
 516                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
 517                         (1 << 20) /* valid */ | (c->untag << 6) | c->port);
 518                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 519         }
 520
 521         kfree(c);
 522         return 0;
 523 }
 524
 525 #define set_switch(state) \
 526         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 527
 528 static int handle_enable_read(void *driver, char *buf, int nr)
 529 {
 530         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 531 }
 532
 533 static int handle_enable_write(void *driver, char *buf, int nr)
 534 {
 535         set_switch(buf[0] == '1');
 536
 537         return 0;
 538 }
 539
 540 static int handle_port_enable_read(void *driver, char *buf, int nr)
 541 {
 542         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 543 }
 544
 545 static int handle_port_enable_write(void *driver, char *buf, int nr)
 546 {
 547         u16 val16;
 548
 549         if (buf[0] == '0')
 550                 val16 = 3; /* disabled */
 551         else if (buf[0] == '1')
 552                 val16 = 0; /* enabled */
 553         else
 554                 return -EINVAL;
 555
 556         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 557                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 558
 559         return 0;
 560 }
 561
 562 static int handle_port_media_read(void *driver, char *buf, int nr)
 563 {
 564         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 565         int media, len;
 566
 567         if (bmcr & BMCR_ANENABLE)
 568                 media = SWITCH_MEDIA_AUTO;
 569         else {
 570                 if (bmcr & BMCR_SPEED1000)
 571                         media = SWITCH_MEDIA_1000;
 572                 else if (bmcr & BMCR_SPEED100)
 573                         media = SWITCH_MEDIA_100;
 574                 else
 575                         media = 0;
 576
 577                 if (bmcr & BMCR_FULLDPLX)
 578                         media |= SWITCH_MEDIA_FD;
 579         }
 580
 581         len = switch_print_media(buf, media);
 582         return len + sprintf(buf + len, "\n");
 583 }
 584
 585 static int handle_port_media_write(void *driver, char *buf, int nr)
 586 {
 587         int media = switch_parse_media(buf);
 588         u16 bmcr, bmcr_mask;
 589
 590         if (media & SWITCH_MEDIA_AUTO)
 591                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 592         else {
 593                 if (media & SWITCH_MEDIA_1000) {
 594                         if (!robo.gmii)
 595                                 return -EINVAL;
 596                         bmcr = BMCR_SPEED1000;
 597                 }
 598                 else if (media & SWITCH_MEDIA_100)
 599                         bmcr = BMCR_SPEED100;
 600                 else
 601                         bmcr = 0;
 602
 603                 if (media & SWITCH_MEDIA_FD)
 604                         bmcr |= BMCR_FULLDPLX;
 605         }
 606
 607         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 608         mdio_write(robo.port[nr], MII_BMCR,
 609                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 610
 611         return 0;
 612 }
 613
 614 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 615 {
 616         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 617 }
 618
 619 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 620 {
 621         int disable = ((buf[0] != '1') ? 1 : 0);
 622
 623         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 624                 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 625         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 626                 (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 627                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 628
 629         if (robo.devid != ROBO_DEVICE_ID_5325)
 630                 return 0;
 631
 632         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 633                 (1 << 6) /* drop invalid VID frames */);
 634         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 635                 (1 << 3) /* drop miss V table frames */);
 636
 637         return 0;
 638 }
 639
 640 static int handle_reset(void *driver, char *buf, int nr)
 641 {
 642         switch_driver *d = (switch_driver *) driver;
 643         int j;
 644         __u16 val16;
 645
 646         /* disable switching */
 647         set_switch(0);
 648
 649         /* reset vlans */
 650         for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
 651                 /* write config now */
 652                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 653                 if (robo.is_5365)
 654                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
 655                 else
 656                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 657                 robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
 658                                                             ROBO_VLAN_TABLE_ACCESS,
 659                              val16);
 660         }
 661
 662         /* reset ports to a known good state */
 663         for (j = 0; j < d->ports; j++) {
 664                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 665                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 666         }
 667
 668         /* enable switching */
 669         set_switch(1);
 670
 671         /* enable vlans */
 672         handle_enable_vlan_write(driver, "1", 0);
 673
 674         return 0;
 675 }
 676
 677 static int __init robo_init(void)
 678 {
 679         int notfound = 1;
 680         char *device;
 681
 682         device = strdup("ethX");
 683         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 684                 if (! switch_device_registered (device))
 685                         notfound = robo_probe(device);
 686         }
 687         device[3]--;
 688
 689         if (notfound) {
 690                 kfree(device);
 691                 return -ENODEV;
 692         } else {
 693                 static const switch_config cfg[] = {
 694                         {
 695                                 .name   = "enable",
 696                                 .read   = handle_enable_read,
 697                                 .write  = handle_enable_write
 698                         }, {
 699                                 .name   = "enable_vlan",
 700                                 .read   = handle_enable_vlan_read,
 701                                 .write  = handle_enable_vlan_write
 702                         }, {
 703                                 .name   = "reset",
 704                                 .read   = NULL,
 705                                 .write  = handle_reset
 706                         }, { NULL, },
 707                 };
 708                 static const switch_config port[] = {
 709                         {
 710                                 .name   = "enable",
 711                                 .read   = handle_port_enable_read,
 712                                 .write  = handle_port_enable_write
 713                         }, {
 714                                 .name   = "media",
 715                                 .read   = handle_port_media_read,
 716                                 .write  = handle_port_media_write
 717                         }, { NULL, },
 718                 };
 719                 static const switch_config vlan[] = {
 720                         {
 721                                 .name   = "ports",
 722                                 .read   = handle_vlan_port_read,
 723                                 .write  = handle_vlan_port_write
 724                         }, { NULL, },
 725                 };
 726                 switch_driver driver = {
 727                         .name                   = DRIVER_NAME,
 728                         .version                = DRIVER_VERSION,
 729                         .interface              = device,
 730                         .cpuport                = 5,
 731                         .ports                  = 6,
 732                         .vlans                  = 16,
 733                         .driver_handlers        = cfg,
 734                         .port_handlers          = port,
 735                         .vlan_handlers          = vlan,
 736                 };
 737                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 738                         driver.ports = 9;
 739                         driver.cpuport = 8;
 740                 }
 741
 742                 return switch_register_driver(&driver);
 743         }
 744 }
 745
 746 static void __exit robo_exit(void)
 747 {
 748         switch_unregister_driver(DRIVER_NAME);
 749         if (robo.dev)
 750                 dev_put(robo.dev);
 751         if (robo.gpio_robo_reset >= 0)
 752                 gpio_free(robo.gpio_robo_reset);
 753         if (robo.gpio_lanports_enable >= 0)
 754                 gpio_free(robo.gpio_lanports_enable);
 755         kfree(robo.device);
 756 }
 757
 758
 759 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 760 MODULE_LICENSE("GPL");
 761
 762 module_init(robo_init);
 763 module_exit(robo_exit);