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 #define  ROBO_DEVICE_ID_53125   0x3125
  67
  68 /* Private et.o ioctls */
  69 #define SIOCGETCPHYRD           (SIOCDEVPRIVATE + 9)
  70 #define SIOCSETCPHYWR           (SIOCDEVPRIVATE + 10)
  71
  72 /* Data structure for a Roboswitch device. */
  73 struct robo_switch {
  74         char *device;                   /* The device name string (ethX) */
  75         u16 devid;                      /* ROBO_DEVICE_ID_53xx */
  76         bool is_5365;
  77         bool gmii;                      /* gigabit mii */
  78         u8 corerev;
  79         int gpio_robo_reset;
  80         int gpio_lanports_enable;
  81         struct ifreq ifr;
  82         struct net_device *dev;
  83         unsigned char port[9];
  84 };
  85
  86 /* Currently we can only have one device in the system. */
  87 static struct robo_switch robo;
  88
  89
  90 static int do_ioctl(int cmd)
  91 {
  92         mm_segment_t old_fs = get_fs();
  93         int ret;
  94
  95         set_fs(KERNEL_DS);
  96         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  97         set_fs(old_fs);
  98
  99         return ret;
 100 }
 101
 102 static u16 mdio_read(__u16 phy_id, __u8 reg)
 103 {
 104         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 105         int err;
 106
 107         mii->phy_id = phy_id;
 108         mii->reg_num = reg;
 109
 110         err = do_ioctl(SIOCGMIIREG);
 111         if (err < 0) {
 112                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 113
 114                 return 0xffff;
 115         }
 116
 117         return mii->val_out;
 118 }
 119
 120 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 121 {
 122         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 123         int err;
 124
 125         mii->phy_id = phy_id;
 126         mii->reg_num = reg;
 127         mii->val_in = val;
 128
 129         err = do_ioctl(SIOCSMIIREG);
 130         if (err < 0) {
 131                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 132                 return;
 133         }
 134 }
 135
 136 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 137 {
 138         int i = 3;
 139
 140         /* set page number */
 141         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 142                 (page << 8) | REG_MII_PAGE_ENABLE);
 143
 144         /* set register address */
 145         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 146                 (reg << 8) | op);
 147
 148         /* check if operation completed */
 149         while (i--) {
 150                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 151                         return 0;
 152         }
 153
 154         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 155
 156         return 1;
 157 }
 158
 159 /*
 160 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 161 {
 162         int i;
 163
 164         robo_reg(page, reg, REG_MII_ADDR_READ);
 165
 166         for (i = 0; i < count; i++)
 167                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 168 }
 169 */
 170
 171 static __u16 robo_read16(__u8 page, __u8 reg)
 172 {
 173         robo_reg(page, reg, REG_MII_ADDR_READ);
 174
 175         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 176 }
 177
 178 static __u32 robo_read32(__u8 page, __u8 reg)
 179 {
 180         robo_reg(page, reg, REG_MII_ADDR_READ);
 181
 182         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 183                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 184 }
 185
 186 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 187 {
 188         /* write data */
 189         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 190
 191         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 192 }
 193
 194 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 195 {
 196         /* write data */
 197         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 198         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 199
 200         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 201 }
 202
 203 /* checks that attached switch is 5365 */
 204 static bool robo_bcm5365(void)
 205 {
 206         /* set vlan access id to 15 and read it back */
 207         __u16 val16 = 15;
 208         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 209
 210         /* 5365 will refuse this as it does not have this reg */
 211         return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
 212 }
 213
 214 static bool robo_gmii(void)
 215 {
 216         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 217                 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
 218         return false;
 219 }
 220
 221 static int robo_switch_enable(void)
 222 {
 223         unsigned int i, last_port;
 224         u16 val;
 225 #ifdef CONFIG_BCM47XX
 226         char buf[20];
 227 #endif
 228
 229         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 230         if (!(val & (1 << 1))) {
 231                 /* Unmanaged mode */
 232                 val &= ~(1 << 0);
 233                 /* With forwarding */
 234                 val |= (1 << 1);
 235                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 236                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 237                 if (!(val & (1 << 1))) {
 238                         printk(KERN_ERR PFX "Failed to enable switch\n");
 239                         return -EBUSY;
 240                 }
 241
 242                 /* No spanning tree for unmanaged mode */
 243                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 244                                 ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
 245                 for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
 246                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 247
 248                 /* No spanning tree on IMP port too */
 249                 robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
 250         }
 251
 252         if (robo.devid == ROBO_DEVICE_ID_53125) {
 253                 /* Make IM port status link by default */
 254                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL) | 0xb1;
 255                 robo_write16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL, val);
 256                 // TODO: init EEE feature
 257         }
 258
 259 #ifdef CONFIG_BCM47XX
 260         /* WAN port LED, except for Netgear WGT634U */
 261         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 262                 if (strcmp(buf, "cfe") != 0)
 263                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 264         }
 265 #endif
 266         return 0;
 267 }
 268
 269 static void robo_switch_reset(void)
 270 {
 271         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 272             (robo.devid == ROBO_DEVICE_ID_5397) ||
 273             (robo.devid == ROBO_DEVICE_ID_5398)) {
 274                 /* Trigger a software reset. */
 275                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 276                 mdelay(500);
 277                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 278         }
 279 }
 280
 281 #ifdef CONFIG_BCM47XX
 282 static int get_gpio_pin(const char *name)
 283 {
 284         int i, err;
 285         char nvram_var[10];
 286         char buf[30];
 287
 288         for (i = 0; i < 16; i++) {
 289                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
 290                 if (err <= 0)
 291                         continue;
 292                 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
 293                 if (err <= 0)
 294                         continue;
 295                 if (!strcmp(name, buf))
 296                         return i;
 297         }
 298         return -1;
 299 }
 300 #endif
 301
 302 static int robo_probe(char *devname)
 303 {
 304         __u32 phyid;
 305         unsigned int i;
 306         int err = -1;
 307         struct mii_ioctl_data *mii;
 308
 309         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 310         strcpy(robo.ifr.ifr_name, devname);
 311
 312         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 313                 printk(KERN_ERR PFX "No such device\n");
 314                 err = -ENODEV;
 315                 goto err_done;
 316         }
 317         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 318                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 319                 err = -ENXIO;
 320                 goto err_put;
 321         }
 322
 323         robo.device = devname;
 324
 325         /* try access using MII ioctls - get phy address */
 326         err = do_ioctl(SIOCGMIIPHY);
 327         if (err < 0) {
 328                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 329                 goto err_put;
 330         }
 331
 332         /* got phy address check for robo address */
 333         mii = if_mii(&robo.ifr);
 334         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 335             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 336             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 337                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 338                 err = -ENODEV;
 339                 goto err_put;
 340         }
 341
 342 #ifdef CONFIG_BCM47XX
 343         robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
 344         if (robo.gpio_lanports_enable >= 0) {
 345                 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
 346                 if (err) {
 347                         printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
 348                                err, robo.gpio_lanports_enable);
 349                         goto err_put;
 350                 }
 351                 gpio_direction_output(robo.gpio_lanports_enable, 1);
 352                 mdelay(5);
 353         }
 354
 355         robo.gpio_robo_reset = get_gpio_pin("robo_reset");
 356         if (robo.gpio_robo_reset >= 0) {
 357                 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
 358                 if (err) {
 359                         printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
 360                                err, robo.gpio_robo_reset);
 361                         goto err_gpio_robo;
 362                 }
 363                 gpio_set_value(robo.gpio_robo_reset, 0);
 364                 gpio_direction_output(robo.gpio_robo_reset, 1);
 365                 gpio_set_value(robo.gpio_robo_reset, 0);
 366                 mdelay(50);
 367
 368                 gpio_set_value(robo.gpio_robo_reset, 1);
 369                 mdelay(20);
 370         } else {
 371                 // TODO: reset the internal robo switch
 372         }
 373 #endif
 374
 375         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 376                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 377
 378         if (phyid == 0xffffffff || phyid == 0x55210022) {
 379                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 380                 err = -ENODEV;
 381                 goto err_gpio_lanports;
 382         }
 383
 384         /* Get the device ID */
 385         for (i = 0; i < 10; i++) {
 386                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 387                 if (robo.devid)
 388                         break;
 389                 udelay(10);
 390         }
 391         if (!robo.devid)
 392                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 393         if (robo.devid == ROBO_DEVICE_ID_5325)
 394                 robo.is_5365 = robo_bcm5365();
 395         else
 396                 robo.is_5365 = false;
 397
 398         robo.gmii = robo_gmii();
 399         if (robo.devid == ROBO_DEVICE_ID_5325) {
 400                 for (i = 0; i < 5; i++)
 401                         robo.port[i] = i;
 402         } else {
 403                 for (i = 0; i < 8; i++)
 404                         robo.port[i] = i;
 405         }
 406         robo.port[i] = ROBO_IM_PORT_CTRL;
 407
 408         robo_switch_reset();
 409         err = robo_switch_enable();
 410         if (err)
 411                 goto err_gpio_lanports;
 412
 413         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 414                 robo.is_5365 ? " It's a BCM5365." : "", devname);
 415
 416         return 0;
 417
 418 err_gpio_lanports:
 419         if (robo.gpio_lanports_enable >= 0)
 420                 gpio_free(robo.gpio_lanports_enable);
 421 err_gpio_robo:
 422         if (robo.gpio_robo_reset >= 0)
 423                 gpio_free(robo.gpio_robo_reset);
 424 err_put:
 425         dev_put(robo.dev);
 426         robo.dev = NULL;
 427 err_done:
 428         return err;
 429 }
 430
 431 static int handle_vlan_port_read_old(switch_driver *d, char *buf, int nr)
 432 {
 433         __u16 val16;
 434         int len = 0;
 435         int j;
 436
 437         val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
 438
 439         if (robo.is_5365) {
 440                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 441                 /* actual read */
 442                 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 443                 if ((val16 & (1 << 14)) /* valid */) {
 444                         for (j = 0; j < d->ports; j++) {
 445                                 if (val16 & (1 << j)) {
 446                                         len += sprintf(buf + len, "%d", j);
 447                                         if (val16 & (1 << (j + 7))) {
 448                                                 if (j == d->cpuport)
 449                                                         buf[len++] = 'u';
 450                                         } else {
 451                                                 buf[len++] = 't';
 452                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 453                                                         buf[len++] = '*';
 454                                         }
 455                                         buf[len++] = '\t';
 456                                 }
 457                         }
 458                         len += sprintf(buf + len, "\n");
 459                 }
 460         } else {
 461                 u32 val32;
 462                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 463                 /* actual read */
 464                 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 465                 if ((val32 & (1 << 20)) /* valid */) {
 466                         for (j = 0; j < d->ports; j++) {
 467                                 if (val32 & (1 << j)) {
 468                                         len += sprintf(buf + len, "%d", j);
 469                                         if (val32 & (1 << (j + d->ports))) {
 470                                                 if (j == d->cpuport)
 471                                                         buf[len++] = 'u';
 472                                         } else {
 473                                                 buf[len++] = 't';
 474                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 475                                                         buf[len++] = '*';
 476                                         }
 477                                         buf[len++] = '\t';
 478                                 }
 479                         }
 480                         len += sprintf(buf + len, "\n");
 481                 }
 482         }
 483
 484         buf[len] = '\0';
 485
 486         return len;
 487 }
 488
 489 static int handle_vlan_port_read_new(switch_driver *d, char *buf, int nr)
 490 {
 491         __u8 vtbl_entry, vtbl_index, vtbl_access;
 492         __u32 val32;
 493         int len = 0;
 494         int j;
 495
 496         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 497             (robo.devid == ROBO_DEVICE_ID_53115) ||
 498             (robo.devid == ROBO_DEVICE_ID_53125)) {
 499                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 500                 vtbl_index = ROBO_VTBL_INDX_5395;
 501                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 502         } else {
 503                 vtbl_access = ROBO_VTBL_ACCESS;
 504                 vtbl_index = ROBO_VTBL_INDX;
 505                 vtbl_entry = ROBO_VTBL_ENTRY;
 506         }
 507
 508         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 509         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, (1 << 7) | (1 << 0));
 510         val32 = robo_read32(ROBO_ARLIO_PAGE, vtbl_entry);
 511         for (j = 0; j < d->ports; j++) {
 512                 if (val32 & (1 << j)) {
 513                         len += sprintf(buf + len, "%d", j);
 514                         if (val32 & (1 << (j + d->ports))) {
 515                                 if (j == d->cpuport)
 516                                         buf[len++] = 'u';
 517                         } else {
 518                                 buf[len++] = 't';
 519                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 520                                         buf[len++] = '*';
 521                         }
 522                         buf[len++] = '\t';
 523                 }
 524         }
 525         len += sprintf(buf + len, "\n");
 526         buf[len] = '\0';
 527         return len;
 528 }
 529
 530 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 531 {
 532         switch_driver *d = (switch_driver *) driver;
 533
 534         if (robo.devid != ROBO_DEVICE_ID_5325)
 535                 return handle_vlan_port_read_new(d, buf, nr);
 536         else
 537                 return handle_vlan_port_read_old(d, buf, nr);
 538 }
 539
 540 static void handle_vlan_port_write_old(switch_driver *d, switch_vlan_config *c, int nr)
 541 {
 542         __u16 val16;
 543         __u32 val32;
 544         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 545
 546         /* write config now */
 547         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 548         if (robo.is_5365) {
 549                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
 550                         (1 << 14)  /* valid */ | (untag << 1 ) | c->port);
 551                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 552         } else {
 553                 if (robo.corerev < 3)
 554                         val32 = (1 << 20) | ((nr >> 4) << 12) | untag | c->port;
 555                 else
 556                         val32 = (1 << 24) | (nr << 12) | untag | c->port;
 557                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, val32);
 558                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 559         }
 560 }
 561
 562 static void handle_vlan_port_write_new(switch_driver *d, switch_vlan_config *c, int nr)
 563 {
 564         __u8 vtbl_entry, vtbl_index, vtbl_access;
 565         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 566
 567         /* write config now */
 568         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 569             (robo.devid == ROBO_DEVICE_ID_53115) ||
 570             (robo.devid == ROBO_DEVICE_ID_53125)) {
 571                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 572                 vtbl_index = ROBO_VTBL_INDX_5395;
 573                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 574         } else {
 575                 vtbl_access = ROBO_VTBL_ACCESS;
 576                 vtbl_index = ROBO_VTBL_INDX;
 577                 vtbl_entry = ROBO_VTBL_ENTRY;
 578         }
 579
 580         robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, untag | c->port);
 581         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 582         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 583 }
 584
 585 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 586 {
 587         switch_driver *d = (switch_driver *)driver;
 588         switch_vlan_config *c = switch_parse_vlan(d, buf);
 589         int j;
 590
 591         if (c == NULL)
 592                 return -EINVAL;
 593
 594         for (j = 0; j < d->ports; j++) {
 595                 if ((c->untag | c->pvid) & (1 << j)) {
 596                         /* change default vlan tag */
 597                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 598                 }
 599         }
 600
 601         if (robo.devid != ROBO_DEVICE_ID_5325)
 602                 handle_vlan_port_write_new(d, c, nr);
 603         else
 604                 handle_vlan_port_write_old(d, c, nr);
 605
 606         kfree(c);
 607         return 0;
 608 }
 609
 610 #define set_switch(state) \
 611         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 612
 613 static int handle_enable_read(void *driver, char *buf, int nr)
 614 {
 615         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 616 }
 617
 618 static int handle_enable_write(void *driver, char *buf, int nr)
 619 {
 620         set_switch(buf[0] == '1');
 621
 622         return 0;
 623 }
 624
 625 static int handle_port_enable_read(void *driver, char *buf, int nr)
 626 {
 627         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 628 }
 629
 630 static int handle_port_enable_write(void *driver, char *buf, int nr)
 631 {
 632         u16 val16;
 633
 634         if (buf[0] == '0')
 635                 val16 = 3; /* disabled */
 636         else if (buf[0] == '1')
 637                 val16 = 0; /* enabled */
 638         else
 639                 return -EINVAL;
 640
 641         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 642                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 643
 644         return 0;
 645 }
 646
 647 static int handle_port_media_read(void *driver, char *buf, int nr)
 648 {
 649         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 650         int media, len;
 651
 652         if (bmcr & BMCR_ANENABLE)
 653                 media = SWITCH_MEDIA_AUTO;
 654         else {
 655                 if (bmcr & BMCR_SPEED1000)
 656                         media = SWITCH_MEDIA_1000;
 657                 else if (bmcr & BMCR_SPEED100)
 658                         media = SWITCH_MEDIA_100;
 659                 else
 660                         media = 0;
 661
 662                 if (bmcr & BMCR_FULLDPLX)
 663                         media |= SWITCH_MEDIA_FD;
 664         }
 665
 666         len = switch_print_media(buf, media);
 667         return len + sprintf(buf + len, "\n");
 668 }
 669
 670 static int handle_port_media_write(void *driver, char *buf, int nr)
 671 {
 672         int media = switch_parse_media(buf);
 673         u16 bmcr, bmcr_mask;
 674
 675         if (media & SWITCH_MEDIA_AUTO)
 676                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 677         else {
 678                 if (media & SWITCH_MEDIA_1000) {
 679                         if (!robo.gmii)
 680                                 return -EINVAL;
 681                         bmcr = BMCR_SPEED1000;
 682                 }
 683                 else if (media & SWITCH_MEDIA_100)
 684                         bmcr = BMCR_SPEED100;
 685                 else
 686                         bmcr = 0;
 687
 688                 if (media & SWITCH_MEDIA_FD)
 689                         bmcr |= BMCR_FULLDPLX;
 690         }
 691
 692         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 693         mdio_write(robo.port[nr], MII_BMCR,
 694                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 695
 696         return 0;
 697 }
 698
 699 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 700 {
 701         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 702 }
 703
 704 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 705 {
 706         __u16 val16;
 707         int disable = ((buf[0] != '1') ? 1 : 0);
 708
 709         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0);
 710         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 711                 val16 | (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 712
 713         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1);
 714         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 715                 val16 | (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 716                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 717
 718         if (robo.devid != ROBO_DEVICE_ID_5325)
 719                 return 0;
 720
 721         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 722                 (1 << 6) /* drop invalid VID frames */);
 723         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 724                 (1 << 3) /* drop miss V table frames */);
 725
 726         return 0;
 727 }
 728
 729 static void handle_reset_old(switch_driver *d, char *buf, int nr)
 730 {
 731         int j;
 732         __u16 val16;
 733
 734         /* reset vlans */
 735         for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
 736                 /* write config now */
 737                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 738                 if (robo.is_5365)
 739                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
 740                 else
 741                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 742                 robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
 743                                                             ROBO_VLAN_TABLE_ACCESS,
 744                              val16);
 745         }
 746 }
 747
 748 static void handle_reset_new(switch_driver *d, char *buf, int nr)
 749 {
 750         int j;
 751         __u8 vtbl_entry, vtbl_index, vtbl_access;
 752
 753         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 754             (robo.devid == ROBO_DEVICE_ID_53115) ||
 755             (robo.devid == ROBO_DEVICE_ID_53125)) {
 756                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 757                 vtbl_index = ROBO_VTBL_INDX_5395;
 758                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 759         } else {
 760                 vtbl_access = ROBO_VTBL_ACCESS;
 761                 vtbl_index = ROBO_VTBL_INDX;
 762                 vtbl_entry = ROBO_VTBL_ENTRY;
 763         }
 764
 765         for (j = 0; j <= VLAN_ID_MAX; j++) {
 766                 /* write config now */
 767                 robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, 0);
 768                 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, j);
 769                 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 770         }
 771 }
 772
 773 static int handle_reset(void *driver, char *buf, int nr)
 774 {
 775         int j;
 776         switch_driver *d = (switch_driver *) driver;
 777
 778         /* disable switching */
 779         set_switch(0);
 780
 781         if (robo.devid != ROBO_DEVICE_ID_5325)
 782                 handle_reset_new(d, buf, nr);
 783         else
 784                 handle_reset_old(d, buf, nr);
 785
 786         /* reset ports to a known good state */
 787         for (j = 0; j < d->ports; j++) {
 788                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 789                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 790         }
 791
 792         /* enable switching */
 793         set_switch(1);
 794
 795         /* enable vlans */
 796         handle_enable_vlan_write(driver, "1", 0);
 797
 798         return 0;
 799 }
 800
 801 static int __init robo_init(void)
 802 {
 803         int notfound = 1;
 804         char *device;
 805
 806         device = strdup("ethX");
 807         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 808                 if (! switch_device_registered (device))
 809                         notfound = robo_probe(device);
 810         }
 811         device[3]--;
 812
 813         if (notfound) {
 814                 kfree(device);
 815                 return -ENODEV;
 816         } else {
 817                 static const switch_config cfg[] = {
 818                         {
 819                                 .name   = "enable",
 820                                 .read   = handle_enable_read,
 821                                 .write  = handle_enable_write
 822                         }, {
 823                                 .name   = "enable_vlan",
 824                                 .read   = handle_enable_vlan_read,
 825                                 .write  = handle_enable_vlan_write
 826                         }, {
 827                                 .name   = "reset",
 828                                 .read   = NULL,
 829                                 .write  = handle_reset
 830                         }, { NULL, },
 831                 };
 832                 static const switch_config port[] = {
 833                         {
 834                                 .name   = "enable",
 835                                 .read   = handle_port_enable_read,
 836                                 .write  = handle_port_enable_write
 837                         }, {
 838                                 .name   = "media",
 839                                 .read   = handle_port_media_read,
 840                                 .write  = handle_port_media_write
 841                         }, { NULL, },
 842                 };
 843                 static const switch_config vlan[] = {
 844                         {
 845                                 .name   = "ports",
 846                                 .read   = handle_vlan_port_read,
 847                                 .write  = handle_vlan_port_write
 848                         }, { NULL, },
 849                 };
 850                 switch_driver driver = {
 851                         .name                   = DRIVER_NAME,
 852                         .version                = DRIVER_VERSION,
 853                         .interface              = device,
 854                         .cpuport                = 5,
 855                         .ports                  = 6,
 856                         .vlans                  = 16,
 857                         .driver_handlers        = cfg,
 858                         .port_handlers          = port,
 859                         .vlan_handlers          = vlan,
 860                 };
 861                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 862                         driver.ports = 9;
 863                         driver.cpuport = 8;
 864                 }
 865
 866                 return switch_register_driver(&driver);
 867         }
 868 }
 869
 870 static void __exit robo_exit(void)
 871 {
 872         switch_unregister_driver(DRIVER_NAME);
 873         if (robo.dev)
 874                 dev_put(robo.dev);
 875         if (robo.gpio_robo_reset >= 0)
 876                 gpio_free(robo.gpio_robo_reset);
 877         if (robo.gpio_lanports_enable >= 0)
 878                 gpio_free(robo.gpio_lanports_enable);
 879         kfree(robo.device);
 880 }
 881
 882
 883 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 884 MODULE_LICENSE("GPL");
 885
 886 module_init(robo_init);
 887 module_exit(robo_exit);