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         u8 corerev;
  78         int gpio_robo_reset;
  79         int gpio_lanports_enable;
  80         struct ifreq ifr;
  81         struct net_device *dev;
  82         unsigned char port[9];
  83 };
  84
  85 /* Currently we can only have one device in the system. */
  86 static struct robo_switch robo;
  87
  88
  89 static int do_ioctl(int cmd)
  90 {
  91         mm_segment_t old_fs = get_fs();
  92         int ret;
  93
  94         set_fs(KERNEL_DS);
  95         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  96         set_fs(old_fs);
  97
  98         return ret;
  99 }
 100
 101 static u16 mdio_read(__u16 phy_id, __u8 reg)
 102 {
 103         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 104         int err;
 105
 106         mii->phy_id = phy_id;
 107         mii->reg_num = reg;
 108
 109         err = do_ioctl(SIOCGMIIREG);
 110         if (err < 0) {
 111                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 112
 113                 return 0xffff;
 114         }
 115
 116         return mii->val_out;
 117 }
 118
 119 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 120 {
 121         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 122         int err;
 123
 124         mii->phy_id = phy_id;
 125         mii->reg_num = reg;
 126         mii->val_in = val;
 127
 128         err = do_ioctl(SIOCSMIIREG);
 129         if (err < 0) {
 130                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 131                 return;
 132         }
 133 }
 134
 135 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 136 {
 137         int i = 3;
 138
 139         /* set page number */
 140         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 141                 (page << 8) | REG_MII_PAGE_ENABLE);
 142
 143         /* set register address */
 144         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 145                 (reg << 8) | op);
 146
 147         /* check if operation completed */
 148         while (i--) {
 149                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 150                         return 0;
 151         }
 152
 153         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 154
 155         return 1;
 156 }
 157
 158 /*
 159 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 160 {
 161         int i;
 162
 163         robo_reg(page, reg, REG_MII_ADDR_READ);
 164
 165         for (i = 0; i < count; i++)
 166                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 167 }
 168 */
 169
 170 static __u16 robo_read16(__u8 page, __u8 reg)
 171 {
 172         robo_reg(page, reg, REG_MII_ADDR_READ);
 173
 174         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 175 }
 176
 177 static __u32 robo_read32(__u8 page, __u8 reg)
 178 {
 179         robo_reg(page, reg, REG_MII_ADDR_READ);
 180
 181         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 182                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 183 }
 184
 185 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 186 {
 187         /* write data */
 188         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 189
 190         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 191 }
 192
 193 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 194 {
 195         /* write data */
 196         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 197         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 198
 199         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 200 }
 201
 202 /* checks that attached switch is 5365 */
 203 static bool robo_bcm5365(void)
 204 {
 205         /* set vlan access id to 15 and read it back */
 206         __u16 val16 = 15;
 207         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 208
 209         /* 5365 will refuse this as it does not have this reg */
 210         return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
 211 }
 212
 213 static bool robo_gmii(void)
 214 {
 215         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 216                 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
 217         return false;
 218 }
 219
 220 static int robo_switch_enable(void)
 221 {
 222         unsigned int i, last_port;
 223         u16 val;
 224 #ifdef CONFIG_BCM47XX
 225         char buf[20];
 226 #endif
 227
 228         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 229         if (!(val & (1 << 1))) {
 230                 /* Unmanaged mode */
 231                 val &= ~(1 << 0);
 232                 /* With forwarding */
 233                 val |= (1 << 1);
 234                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 235                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 236                 if (!(val & (1 << 1))) {
 237                         printk(KERN_ERR PFX "Failed to enable switch\n");
 238                         return -EBUSY;
 239                 }
 240
 241                 /* No spanning tree for unmanaged mode */
 242                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 243                                 ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
 244                 for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
 245                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 246
 247                 /* No spanning tree on IMP port too */
 248                 robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
 249         }
 250
 251 #ifdef CONFIG_BCM47XX
 252         /* WAN port LED, except for Netgear WGT634U */
 253         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 254                 if (strcmp(buf, "cfe") != 0)
 255                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 256         }
 257 #endif
 258         return 0;
 259 }
 260
 261 static void robo_switch_reset(void)
 262 {
 263         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 264             (robo.devid == ROBO_DEVICE_ID_5397) ||
 265             (robo.devid == ROBO_DEVICE_ID_5398)) {
 266                 /* Trigger a software reset. */
 267                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 268                 mdelay(500);
 269                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 270         }
 271 }
 272
 273 #ifdef CONFIG_BCM47XX
 274 static int get_gpio_pin(const char *name)
 275 {
 276         int i, err;
 277         char nvram_var[10];
 278         char buf[30];
 279
 280         for (i = 0; i < 16; i++) {
 281                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
 282                 if (err <= 0)
 283                         continue;
 284                 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
 285                 if (err <= 0)
 286                         continue;
 287                 if (!strcmp(name, buf))
 288                         return i;
 289         }
 290         return -1;
 291 }
 292 #endif
 293
 294 static int robo_probe(char *devname)
 295 {
 296         __u32 phyid;
 297         unsigned int i;
 298         int err = -1;
 299         struct mii_ioctl_data *mii;
 300
 301         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 302         strcpy(robo.ifr.ifr_name, devname);
 303
 304         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 305                 printk(KERN_ERR PFX "No such device\n");
 306                 err = -ENODEV;
 307                 goto err_done;
 308         }
 309         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 310                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 311                 err = -ENXIO;
 312                 goto err_put;
 313         }
 314
 315         robo.device = devname;
 316
 317         /* try access using MII ioctls - get phy address */
 318         err = do_ioctl(SIOCGMIIPHY);
 319         if (err < 0) {
 320                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 321                 goto err_put;
 322         }
 323
 324         /* got phy address check for robo address */
 325         mii = if_mii(&robo.ifr);
 326         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 327             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 328             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 329                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 330                 err = -ENODEV;
 331                 goto err_put;
 332         }
 333
 334 #ifdef CONFIG_BCM47XX
 335         robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
 336         if (robo.gpio_lanports_enable >= 0) {
 337                 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
 338                 if (err) {
 339                         printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
 340                                err, robo.gpio_lanports_enable);
 341                         goto err_put;
 342                 }
 343                 gpio_direction_output(robo.gpio_lanports_enable, 1);
 344                 mdelay(5);
 345         }
 346
 347         robo.gpio_robo_reset = get_gpio_pin("robo_reset");
 348         if (robo.gpio_robo_reset >= 0) {
 349                 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
 350                 if (err) {
 351                         printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
 352                                err, robo.gpio_robo_reset);
 353                         goto err_gpio_robo;
 354                 }
 355                 gpio_set_value(robo.gpio_robo_reset, 0);
 356                 gpio_direction_output(robo.gpio_robo_reset, 1);
 357                 gpio_set_value(robo.gpio_robo_reset, 0);
 358                 mdelay(50);
 359
 360                 gpio_set_value(robo.gpio_robo_reset, 1);
 361                 mdelay(20);
 362         } else {
 363                 // TODO: reset the internal robo switch
 364         }
 365 #endif
 366
 367         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 368                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 369
 370         if (phyid == 0xffffffff || phyid == 0x55210022) {
 371                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 372                 err = -ENODEV;
 373                 goto err_gpio_lanports;
 374         }
 375
 376         /* Get the device ID */
 377         for (i = 0; i < 10; i++) {
 378                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 379                 if (robo.devid)
 380                         break;
 381                 udelay(10);
 382         }
 383         if (!robo.devid)
 384                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 385         if (robo.devid == ROBO_DEVICE_ID_5325)
 386                 robo.is_5365 = robo_bcm5365();
 387         else
 388                 robo.is_5365 = false;
 389
 390         robo.gmii = robo_gmii();
 391         if (robo.devid == ROBO_DEVICE_ID_5325) {
 392                 for (i = 0; i < 5; i++)
 393                         robo.port[i] = i;
 394         } else {
 395                 for (i = 0; i < 8; i++)
 396                         robo.port[i] = i;
 397         }
 398         robo.port[i] = ROBO_IM_PORT_CTRL;
 399
 400         robo_switch_reset();
 401         err = robo_switch_enable();
 402         if (err)
 403                 goto err_gpio_lanports;
 404
 405         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 406                 robo.is_5365 ? " It's a BCM5365." : "", devname);
 407
 408         return 0;
 409
 410 err_gpio_lanports:
 411         if (robo.gpio_lanports_enable >= 0)
 412                 gpio_free(robo.gpio_lanports_enable);
 413 err_gpio_robo:
 414         if (robo.gpio_robo_reset >= 0)
 415                 gpio_free(robo.gpio_robo_reset);
 416 err_put:
 417         dev_put(robo.dev);
 418         robo.dev = NULL;
 419 err_done:
 420         return err;
 421 }
 422
 423 static int handle_vlan_port_read_old(switch_driver *d, 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 < d->ports; j++) {
 437                                 if (val16 & (1 << j)) {
 438                                         len += sprintf(buf + len, "%d", j);
 439                                         if (val16 & (1 << (j + 7))) {
 440                                                 if (j == d->cpuport)
 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 < d->ports; j++) {
 459                                 if (val32 & (1 << j)) {
 460                                         len += sprintf(buf + len, "%d", j);
 461                                         if (val32 & (1 << (j + d->ports))) {
 462                                                 if (j == d->cpuport)
 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_read_new(switch_driver *d, char *buf, int nr)
 482 {
 483         __u8 vtbl_entry, vtbl_index, vtbl_access;
 484         __u32 val32;
 485         int len = 0;
 486         int j;
 487
 488         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 489             (robo.devid == ROBO_DEVICE_ID_53115)) {
 490                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 491                 vtbl_index = ROBO_VTBL_INDX_5395;
 492                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 493         } else {
 494                 vtbl_access = ROBO_VTBL_ACCESS;
 495                 vtbl_index = ROBO_VTBL_INDX;
 496                 vtbl_entry = ROBO_VTBL_ENTRY;
 497         }
 498
 499         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 500         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, (1 << 7) | (1 << 0));
 501         val32 = robo_read32(ROBO_ARLIO_PAGE, vtbl_entry);
 502         for (j = 0; j < d->ports; j++) {
 503                 if (val32 & (1 << j)) {
 504                         len += sprintf(buf + len, "%d", j);
 505                         if (val32 & (1 << (j + d->ports))) {
 506                                 if (j == d->cpuport)
 507                                         buf[len++] = 'u';
 508                         } else {
 509                                 buf[len++] = 't';
 510                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 511                                         buf[len++] = '*';
 512                         }
 513                         buf[len++] = '\t';
 514                 }
 515         }
 516         len += sprintf(buf + len, "\n");
 517         buf[len] = '\0';
 518         return len;
 519 }
 520
 521 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 522 {
 523         switch_driver *d = (switch_driver *) driver;
 524
 525         if (robo.devid != ROBO_DEVICE_ID_5325)
 526                 return handle_vlan_port_read_new(d, buf, nr);
 527         else
 528                 return handle_vlan_port_read_old(d, buf, nr);
 529 }
 530
 531 static void handle_vlan_port_write_old(switch_driver *d, switch_vlan_config *c, int nr)
 532 {
 533         __u16 val16;
 534         __u32 val32;
 535         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 536
 537         /* write config now */
 538         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 539         if (robo.is_5365) {
 540                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
 541                         (1 << 14)  /* valid */ | (untag << 1 ) | c->port);
 542                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 543         } else {
 544                 if (robo.corerev < 3)
 545                         val32 = (1 << 20) | ((nr >> 4) << 12) | untag | c->port;
 546                 else
 547                         val32 = (1 << 24) | (nr << 12) | untag | c->port;
 548                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, val32);
 549                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 550         }
 551 }
 552
 553 static void handle_vlan_port_write_new(switch_driver *d, switch_vlan_config *c, int nr)
 554 {
 555         __u8 vtbl_entry, vtbl_index, vtbl_access;
 556         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 557
 558         /* write config now */
 559         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 560             (robo.devid == ROBO_DEVICE_ID_53115)) {
 561                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 562                 vtbl_index = ROBO_VTBL_INDX_5395;
 563                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 564         } else {
 565                 vtbl_access = ROBO_VTBL_ACCESS;
 566                 vtbl_index = ROBO_VTBL_INDX;
 567                 vtbl_entry = ROBO_VTBL_ENTRY;
 568         }
 569
 570         robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, untag | c->port);
 571         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 572         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 573 }
 574
 575 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 576 {
 577         switch_driver *d = (switch_driver *)driver;
 578         switch_vlan_config *c = switch_parse_vlan(d, buf);
 579         int j;
 580
 581         if (c == NULL)
 582                 return -EINVAL;
 583
 584         for (j = 0; j < d->ports; j++) {
 585                 if ((c->untag | c->pvid) & (1 << j)) {
 586                         /* change default vlan tag */
 587                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 588                 }
 589         }
 590
 591         if (robo.devid != ROBO_DEVICE_ID_5325)
 592                 handle_vlan_port_write_new(d, c, nr);
 593         else
 594                 handle_vlan_port_write_old(d, c, nr);
 595
 596         kfree(c);
 597         return 0;
 598 }
 599
 600 #define set_switch(state) \
 601         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 602
 603 static int handle_enable_read(void *driver, char *buf, int nr)
 604 {
 605         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 606 }
 607
 608 static int handle_enable_write(void *driver, char *buf, int nr)
 609 {
 610         set_switch(buf[0] == '1');
 611
 612         return 0;
 613 }
 614
 615 static int handle_port_enable_read(void *driver, char *buf, int nr)
 616 {
 617         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 618 }
 619
 620 static int handle_port_enable_write(void *driver, char *buf, int nr)
 621 {
 622         u16 val16;
 623
 624         if (buf[0] == '0')
 625                 val16 = 3; /* disabled */
 626         else if (buf[0] == '1')
 627                 val16 = 0; /* enabled */
 628         else
 629                 return -EINVAL;
 630
 631         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 632                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 633
 634         return 0;
 635 }
 636
 637 static int handle_port_media_read(void *driver, char *buf, int nr)
 638 {
 639         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 640         int media, len;
 641
 642         if (bmcr & BMCR_ANENABLE)
 643                 media = SWITCH_MEDIA_AUTO;
 644         else {
 645                 if (bmcr & BMCR_SPEED1000)
 646                         media = SWITCH_MEDIA_1000;
 647                 else if (bmcr & BMCR_SPEED100)
 648                         media = SWITCH_MEDIA_100;
 649                 else
 650                         media = 0;
 651
 652                 if (bmcr & BMCR_FULLDPLX)
 653                         media |= SWITCH_MEDIA_FD;
 654         }
 655
 656         len = switch_print_media(buf, media);
 657         return len + sprintf(buf + len, "\n");
 658 }
 659
 660 static int handle_port_media_write(void *driver, char *buf, int nr)
 661 {
 662         int media = switch_parse_media(buf);
 663         u16 bmcr, bmcr_mask;
 664
 665         if (media & SWITCH_MEDIA_AUTO)
 666                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 667         else {
 668                 if (media & SWITCH_MEDIA_1000) {
 669                         if (!robo.gmii)
 670                                 return -EINVAL;
 671                         bmcr = BMCR_SPEED1000;
 672                 }
 673                 else if (media & SWITCH_MEDIA_100)
 674                         bmcr = BMCR_SPEED100;
 675                 else
 676                         bmcr = 0;
 677
 678                 if (media & SWITCH_MEDIA_FD)
 679                         bmcr |= BMCR_FULLDPLX;
 680         }
 681
 682         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 683         mdio_write(robo.port[nr], MII_BMCR,
 684                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 685
 686         return 0;
 687 }
 688
 689 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 690 {
 691         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 692 }
 693
 694 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 695 {
 696         __u16 val16;
 697         int disable = ((buf[0] != '1') ? 1 : 0);
 698
 699         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0);
 700         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 701                 val16 | (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 702
 703         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1);
 704         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 705                 val16 | (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 706                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 707
 708         if (robo.devid != ROBO_DEVICE_ID_5325)
 709                 return 0;
 710
 711         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 712                 (1 << 6) /* drop invalid VID frames */);
 713         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 714                 (1 << 3) /* drop miss V table frames */);
 715
 716         return 0;
 717 }
 718
 719 static void handle_reset_old(switch_driver *d, char *buf, int nr)
 720 {
 721         int j;
 722         __u16 val16;
 723
 724         /* reset vlans */
 725         for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
 726                 /* write config now */
 727                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 728                 if (robo.is_5365)
 729                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
 730                 else
 731                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 732                 robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
 733                                                             ROBO_VLAN_TABLE_ACCESS,
 734                              val16);
 735         }
 736 }
 737
 738 static void handle_reset_new(switch_driver *d, char *buf, int nr)
 739 {
 740         int j;
 741         __u8 vtbl_entry, vtbl_index, vtbl_access;
 742
 743         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 744             (robo.devid == ROBO_DEVICE_ID_53115)) {
 745                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 746                 vtbl_index = ROBO_VTBL_INDX_5395;
 747                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 748         } else {
 749                 vtbl_access = ROBO_VTBL_ACCESS;
 750                 vtbl_index = ROBO_VTBL_INDX;
 751                 vtbl_entry = ROBO_VTBL_ENTRY;
 752         }
 753
 754         for (j = 0; j <= VLAN_ID_MAX; j++) {
 755                 /* write config now */
 756                 robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, 0);
 757                 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, j);
 758                 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 759         }
 760 }
 761
 762 static int handle_reset(void *driver, char *buf, int nr)
 763 {
 764         int j;
 765         switch_driver *d = (switch_driver *) driver;
 766
 767         /* disable switching */
 768         set_switch(0);
 769
 770         if (robo.devid != ROBO_DEVICE_ID_5325)
 771                 handle_reset_new(d, buf, nr);
 772         else
 773                 handle_reset_old(d, buf, nr);
 774
 775         /* reset ports to a known good state */
 776         for (j = 0; j < d->ports; j++) {
 777                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 778                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 779         }
 780
 781         /* enable switching */
 782         set_switch(1);
 783
 784         /* enable vlans */
 785         handle_enable_vlan_write(driver, "1", 0);
 786
 787         return 0;
 788 }
 789
 790 static int __init robo_init(void)
 791 {
 792         int notfound = 1;
 793         char *device;
 794
 795         device = strdup("ethX");
 796         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 797                 if (! switch_device_registered (device))
 798                         notfound = robo_probe(device);
 799         }
 800         device[3]--;
 801
 802         if (notfound) {
 803                 kfree(device);
 804                 return -ENODEV;
 805         } else {
 806                 static const switch_config cfg[] = {
 807                         {
 808                                 .name   = "enable",
 809                                 .read   = handle_enable_read,
 810                                 .write  = handle_enable_write
 811                         }, {
 812                                 .name   = "enable_vlan",
 813                                 .read   = handle_enable_vlan_read,
 814                                 .write  = handle_enable_vlan_write
 815                         }, {
 816                                 .name   = "reset",
 817                                 .read   = NULL,
 818                                 .write  = handle_reset
 819                         }, { NULL, },
 820                 };
 821                 static const switch_config port[] = {
 822                         {
 823                                 .name   = "enable",
 824                                 .read   = handle_port_enable_read,
 825                                 .write  = handle_port_enable_write
 826                         }, {
 827                                 .name   = "media",
 828                                 .read   = handle_port_media_read,
 829                                 .write  = handle_port_media_write
 830                         }, { NULL, },
 831                 };
 832                 static const switch_config vlan[] = {
 833                         {
 834                                 .name   = "ports",
 835                                 .read   = handle_vlan_port_read,
 836                                 .write  = handle_vlan_port_write
 837                         }, { NULL, },
 838                 };
 839                 switch_driver driver = {
 840                         .name                   = DRIVER_NAME,
 841                         .version                = DRIVER_VERSION,
 842                         .interface              = device,
 843                         .cpuport                = 5,
 844                         .ports                  = 6,
 845                         .vlans                  = 16,
 846                         .driver_handlers        = cfg,
 847                         .port_handlers          = port,
 848                         .vlan_handlers          = vlan,
 849                 };
 850                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 851                         driver.ports = 9;
 852                         driver.cpuport = 8;
 853                 }
 854
 855                 return switch_register_driver(&driver);
 856         }
 857 }
 858
 859 static void __exit robo_exit(void)
 860 {
 861         switch_unregister_driver(DRIVER_NAME);
 862         if (robo.dev)
 863                 dev_put(robo.dev);
 864         if (robo.gpio_robo_reset >= 0)
 865                 gpio_free(robo.gpio_robo_reset);
 866         if (robo.gpio_lanports_enable >= 0)
 867                 gpio_free(robo.gpio_lanports_enable);
 868         kfree(robo.device);
 869 }
 870
 871
 872 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 873 MODULE_LICENSE("GPL");
 874
 875 module_init(robo_init);
 876 module_exit(robo_exit);