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  * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   7  * Based on 'robocfg' by Oleg I. Vdovikin
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22  * 02110-1301, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/if.h>
  28 #include <linux/if_arp.h>
  29 #include <linux/sockios.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/mii.h>
  32 #include <linux/delay.h>
  33 #include <linux/gpio.h>
  34 #include <asm/uaccess.h>
  35
  36 #include "switch-core.h"
  37 #include "etc53xx.h"
  38
  39 #ifdef CONFIG_BCM47XX
  40 #include <bcm47xx_nvram.h>
  41 #endif
  42
  43 #define DRIVER_NAME             "bcm53xx"
  44 #define DRIVER_VERSION          "0.03"
  45 #define PFX                     "roboswitch: "
  46
  47 #define ROBO_PHY_ADDR           0x1E    /* robo switch phy address */
  48 #define ROBO_PHY_ADDR_TG3       0x01    /* Tigon3 PHY address */
  49 #define ROBO_PHY_ADDR_BCM63XX   0x00    /* BCM63XX PHY address */
  50
  51 /* MII registers */
  52 #define REG_MII_PAGE    0x10    /* MII Page register */
  53 #define REG_MII_ADDR    0x11    /* MII Address register */
  54 #define REG_MII_DATA0   0x18    /* MII Data register 0 */
  55
  56 #define REG_MII_PAGE_ENABLE     1
  57 #define REG_MII_ADDR_WRITE      1
  58 #define REG_MII_ADDR_READ       2
  59
  60 /* Robo device ID register (in ROBO_MGMT_PAGE) */
  61 #define ROBO_DEVICE_ID          0x30
  62 #define  ROBO_DEVICE_ID_5325    0x25 /* Faked */
  63 #define  ROBO_DEVICE_ID_5395    0x95
  64 #define  ROBO_DEVICE_ID_5397    0x97
  65 #define  ROBO_DEVICE_ID_5398    0x98
  66 #define  ROBO_DEVICE_ID_53115   0x3115
  67 #define  ROBO_DEVICE_ID_53125   0x3125
  68
  69 /* Private et.o ioctls */
  70 #define SIOCGETCPHYRD           (SIOCDEVPRIVATE + 9)
  71 #define SIOCSETCPHYWR           (SIOCDEVPRIVATE + 10)
  72
  73 /* Data structure for a Roboswitch device. */
  74 struct robo_switch {
  75         char *device;                   /* The device name string (ethX) */
  76         u16 devid;                      /* ROBO_DEVICE_ID_53xx */
  77         bool is_5365;
  78         bool gmii;                      /* gigabit mii */
  79         u8 corerev;
  80         int gpio_robo_reset;
  81         int gpio_lanports_enable;
  82         struct ifreq ifr;
  83         struct net_device *dev;
  84         unsigned char port[9];
  85 };
  86
  87 /* Currently we can only have one device in the system. */
  88 static struct robo_switch robo;
  89
  90
  91 static int do_ioctl(int cmd)
  92 {
  93         mm_segment_t old_fs = get_fs();
  94         int ret;
  95
  96         set_fs(KERNEL_DS);
  97         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  98         set_fs(old_fs);
  99
 100         return ret;
 101 }
 102
 103 static u16 mdio_read(__u16 phy_id, __u8 reg)
 104 {
 105         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 106         int err;
 107
 108         mii->phy_id = phy_id;
 109         mii->reg_num = reg;
 110
 111         err = do_ioctl(SIOCGMIIREG);
 112         if (err < 0) {
 113                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 114
 115                 return 0xffff;
 116         }
 117
 118         return mii->val_out;
 119 }
 120
 121 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 122 {
 123         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 124         int err;
 125
 126         mii->phy_id = phy_id;
 127         mii->reg_num = reg;
 128         mii->val_in = val;
 129
 130         err = do_ioctl(SIOCSMIIREG);
 131         if (err < 0) {
 132                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 133                 return;
 134         }
 135 }
 136
 137 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 138 {
 139         int i = 3;
 140
 141         /* set page number */
 142         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 143                 (page << 8) | REG_MII_PAGE_ENABLE);
 144
 145         /* set register address */
 146         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 147                 (reg << 8) | op);
 148
 149         /* check if operation completed */
 150         while (i--) {
 151                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 152                         return 0;
 153         }
 154
 155         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 156
 157         return 1;
 158 }
 159
 160 /*
 161 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 162 {
 163         int i;
 164
 165         robo_reg(page, reg, REG_MII_ADDR_READ);
 166
 167         for (i = 0; i < count; i++)
 168                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 169 }
 170 */
 171
 172 static __u16 robo_read16(__u8 page, __u8 reg)
 173 {
 174         robo_reg(page, reg, REG_MII_ADDR_READ);
 175
 176         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 177 }
 178
 179 static __u32 robo_read32(__u8 page, __u8 reg)
 180 {
 181         robo_reg(page, reg, REG_MII_ADDR_READ);
 182
 183         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 184                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 185 }
 186
 187 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 188 {
 189         /* write data */
 190         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 191
 192         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 193 }
 194
 195 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 196 {
 197         /* write data */
 198         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 199         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 200
 201         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 202 }
 203
 204 /* checks that attached switch is 5365 */
 205 static bool robo_bcm5365(void)
 206 {
 207         /* set vlan access id to 15 and read it back */
 208         __u16 val16 = 15;
 209         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 210
 211         /* 5365 will refuse this as it does not have this reg */
 212         return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
 213 }
 214
 215 static bool robo_gmii(void)
 216 {
 217         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 218                 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
 219         return false;
 220 }
 221
 222 static int robo_switch_enable(void)
 223 {
 224         unsigned int i, last_port;
 225         u16 val;
 226 #ifdef CONFIG_BCM47XX
 227         char buf[20];
 228 #endif
 229
 230         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 231         if (!(val & (1 << 1))) {
 232                 /* Unmanaged mode */
 233                 val &= ~(1 << 0);
 234                 /* With forwarding */
 235                 val |= (1 << 1);
 236                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 237                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 238                 if (!(val & (1 << 1))) {
 239                         printk(KERN_ERR PFX "Failed to enable switch\n");
 240                         return -EBUSY;
 241                 }
 242
 243                 /* No spanning tree for unmanaged mode */
 244                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 245                                 ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
 246                 for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
 247                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 248
 249                 /* No spanning tree on IMP port too */
 250                 robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
 251         }
 252
 253         if (robo.devid == ROBO_DEVICE_ID_53125) {
 254                 /* Make IM port status link by default */
 255                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL) | 0xb1;
 256                 robo_write16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL, val);
 257                 // TODO: init EEE feature
 258         }
 259
 260 #ifdef CONFIG_BCM47XX
 261         /* WAN port LED, except for Netgear WGT634U */
 262         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 263                 if (strcmp(buf, "cfe") != 0)
 264                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 265         }
 266 #endif
 267         return 0;
 268 }
 269
 270 static void robo_switch_reset(void)
 271 {
 272         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 273             (robo.devid == ROBO_DEVICE_ID_5397) ||
 274             (robo.devid == ROBO_DEVICE_ID_5398)) {
 275                 /* Trigger a software reset. */
 276                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 277                 mdelay(500);
 278                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 279         }
 280 }
 281
 282 #ifdef CONFIG_BCM47XX
 283 static int get_gpio_pin(const char *name)
 284 {
 285         int i, err;
 286         char nvram_var[10];
 287         char buf[30];
 288
 289         for (i = 0; i < 16; i++) {
 290                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
 291                 if (err <= 0)
 292                         continue;
 293                 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
 294                 if (err <= 0)
 295                         continue;
 296                 if (!strcmp(name, buf))
 297                         return i;
 298         }
 299         return -1;
 300 }
 301 #endif
 302
 303 static int robo_probe(char *devname)
 304 {
 305         __u32 phyid;
 306         unsigned int i;
 307         int err = -1;
 308         struct mii_ioctl_data *mii;
 309
 310         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 311         strcpy(robo.ifr.ifr_name, devname);
 312
 313         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 314                 printk(KERN_ERR PFX "No such device\n");
 315                 err = -ENODEV;
 316                 goto err_done;
 317         }
 318         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 319                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 320                 err = -ENXIO;
 321                 goto err_put;
 322         }
 323
 324         robo.device = devname;
 325
 326         /* try access using MII ioctls - get phy address */
 327         err = do_ioctl(SIOCGMIIPHY);
 328         if (err < 0) {
 329                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 330                 goto err_put;
 331         }
 332
 333         /* got phy address check for robo address */
 334         mii = if_mii(&robo.ifr);
 335         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 336             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 337             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 338                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 339                 err = -ENODEV;
 340                 goto err_put;
 341         }
 342
 343 #ifdef CONFIG_BCM47XX
 344         robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
 345         if (robo.gpio_lanports_enable >= 0) {
 346                 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
 347                 if (err) {
 348                         printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
 349                                err, robo.gpio_lanports_enable);
 350                         goto err_put;
 351                 }
 352                 gpio_direction_output(robo.gpio_lanports_enable, 1);
 353                 mdelay(5);
 354         }
 355
 356         robo.gpio_robo_reset = get_gpio_pin("robo_reset");
 357         if (robo.gpio_robo_reset >= 0) {
 358                 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
 359                 if (err) {
 360                         printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
 361                                err, robo.gpio_robo_reset);
 362                         goto err_gpio_robo;
 363                 }
 364                 gpio_set_value(robo.gpio_robo_reset, 0);
 365                 gpio_direction_output(robo.gpio_robo_reset, 1);
 366                 gpio_set_value(robo.gpio_robo_reset, 0);
 367                 mdelay(50);
 368
 369                 gpio_set_value(robo.gpio_robo_reset, 1);
 370                 mdelay(20);
 371         } else {
 372                 // TODO: reset the internal robo switch
 373         }
 374 #endif
 375
 376         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 377                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 378
 379         if (phyid == 0xffffffff || phyid == 0x55210022) {
 380                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 381                 err = -ENODEV;
 382                 goto err_gpio_lanports;
 383         }
 384
 385         /* Get the device ID */
 386         for (i = 0; i < 10; i++) {
 387                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 388                 if (robo.devid)
 389                         break;
 390                 udelay(10);
 391         }
 392         if (!robo.devid)
 393                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 394         if (robo.devid == ROBO_DEVICE_ID_5325)
 395                 robo.is_5365 = robo_bcm5365();
 396         else
 397                 robo.is_5365 = false;
 398
 399         robo.gmii = robo_gmii();
 400         if (robo.devid == ROBO_DEVICE_ID_5325) {
 401                 for (i = 0; i < 5; i++)
 402                         robo.port[i] = i;
 403         } else {
 404                 for (i = 0; i < 8; i++)
 405                         robo.port[i] = i;
 406         }
 407         robo.port[i] = ROBO_IM_PORT_CTRL;
 408
 409         robo_switch_reset();
 410         err = robo_switch_enable();
 411         if (err)
 412                 goto err_gpio_lanports;
 413
 414         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 415                 robo.is_5365 ? " It's a BCM5365." : "", devname);
 416
 417         return 0;
 418
 419 err_gpio_lanports:
 420         if (robo.gpio_lanports_enable >= 0)
 421                 gpio_free(robo.gpio_lanports_enable);
 422 err_gpio_robo:
 423         if (robo.gpio_robo_reset >= 0)
 424                 gpio_free(robo.gpio_robo_reset);
 425 err_put:
 426         dev_put(robo.dev);
 427         robo.dev = NULL;
 428 err_done:
 429         return err;
 430 }
 431
 432 static int handle_vlan_port_read_old(switch_driver *d, char *buf, int nr)
 433 {
 434         __u16 val16;
 435         int len = 0;
 436         int j;
 437
 438         val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
 439
 440         if (robo.is_5365) {
 441                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 442                 /* actual read */
 443                 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 444                 if ((val16 & (1 << 14)) /* valid */) {
 445                         for (j = 0; j < d->ports; j++) {
 446                                 if (val16 & (1 << j)) {
 447                                         len += sprintf(buf + len, "%d", j);
 448                                         if (val16 & (1 << (j + 7))) {
 449                                                 if (j == d->cpuport)
 450                                                         buf[len++] = 'u';
 451                                         } else {
 452                                                 buf[len++] = 't';
 453                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 454                                                         buf[len++] = '*';
 455                                         }
 456                                         buf[len++] = '\t';
 457                                 }
 458                         }
 459                         len += sprintf(buf + len, "\n");
 460                 }
 461         } else {
 462                 u32 val32;
 463                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 464                 /* actual read */
 465                 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 466                 if ((val32 & (1 << 20)) /* valid */) {
 467                         for (j = 0; j < d->ports; j++) {
 468                                 if (val32 & (1 << j)) {
 469                                         len += sprintf(buf + len, "%d", j);
 470                                         if (val32 & (1 << (j + d->ports))) {
 471                                                 if (j == d->cpuport)
 472                                                         buf[len++] = 'u';
 473                                         } else {
 474                                                 buf[len++] = 't';
 475                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 476                                                         buf[len++] = '*';
 477                                         }
 478                                         buf[len++] = '\t';
 479                                 }
 480                         }
 481                         len += sprintf(buf + len, "\n");
 482                 }
 483         }
 484
 485         buf[len] = '\0';
 486
 487         return len;
 488 }
 489
 490 static int handle_vlan_port_read_new(switch_driver *d, char *buf, int nr)
 491 {
 492         __u8 vtbl_entry, vtbl_index, vtbl_access;
 493         __u32 val32;
 494         int len = 0;
 495         int j;
 496
 497         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 498             (robo.devid == ROBO_DEVICE_ID_53115) ||
 499             (robo.devid == ROBO_DEVICE_ID_53125)) {
 500                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 501                 vtbl_index = ROBO_VTBL_INDX_5395;
 502                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 503         } else {
 504                 vtbl_access = ROBO_VTBL_ACCESS;
 505                 vtbl_index = ROBO_VTBL_INDX;
 506                 vtbl_entry = ROBO_VTBL_ENTRY;
 507         }
 508
 509         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 510         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, (1 << 7) | (1 << 0));
 511         val32 = robo_read32(ROBO_ARLIO_PAGE, vtbl_entry);
 512         for (j = 0; j < d->ports; j++) {
 513                 if (val32 & (1 << j)) {
 514                         len += sprintf(buf + len, "%d", j);
 515                         if (val32 & (1 << (j + d->ports))) {
 516                                 if (j == d->cpuport)
 517                                         buf[len++] = 'u';
 518                         } else {
 519                                 buf[len++] = 't';
 520                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 521                                         buf[len++] = '*';
 522                         }
 523                         buf[len++] = '\t';
 524                 }
 525         }
 526         len += sprintf(buf + len, "\n");
 527         buf[len] = '\0';
 528         return len;
 529 }
 530
 531 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 532 {
 533         switch_driver *d = (switch_driver *) driver;
 534
 535         if (robo.devid != ROBO_DEVICE_ID_5325)
 536                 return handle_vlan_port_read_new(d, buf, nr);
 537         else
 538                 return handle_vlan_port_read_old(d, buf, nr);
 539 }
 540
 541 static void handle_vlan_port_write_old(switch_driver *d, switch_vlan_config *c, int nr)
 542 {
 543         __u16 val16;
 544         __u32 val32;
 545         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 546
 547         /* write config now */
 548         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 549         if (robo.is_5365) {
 550                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
 551                         (1 << 14)  /* valid */ | (untag << 1 ) | c->port);
 552                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
 553         } else {
 554                 if (robo.corerev < 3)
 555                         val32 = (1 << 20) | ((nr >> 4) << 12) | untag | c->port;
 556                 else
 557                         val32 = (1 << 24) | (nr << 12) | untag | c->port;
 558                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, val32);
 559                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 560         }
 561 }
 562
 563 static void handle_vlan_port_write_new(switch_driver *d, switch_vlan_config *c, int nr)
 564 {
 565         __u8 vtbl_entry, vtbl_index, vtbl_access;
 566         __u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);
 567
 568         /* write config now */
 569         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 570             (robo.devid == ROBO_DEVICE_ID_53115) ||
 571             (robo.devid == ROBO_DEVICE_ID_53125)) {
 572                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 573                 vtbl_index = ROBO_VTBL_INDX_5395;
 574                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 575         } else {
 576                 vtbl_access = ROBO_VTBL_ACCESS;
 577                 vtbl_index = ROBO_VTBL_INDX;
 578                 vtbl_entry = ROBO_VTBL_ENTRY;
 579         }
 580
 581         robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, untag | c->port);
 582         robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
 583         robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 584 }
 585
 586 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 587 {
 588         switch_driver *d = (switch_driver *)driver;
 589         switch_vlan_config *c = switch_parse_vlan(d, buf);
 590         int j;
 591
 592         if (c == NULL)
 593                 return -EINVAL;
 594
 595         for (j = 0; j < d->ports; j++) {
 596                 if ((c->untag | c->pvid) & (1 << j)) {
 597                         /* change default vlan tag */
 598                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 599                 }
 600         }
 601
 602         if (robo.devid != ROBO_DEVICE_ID_5325)
 603                 handle_vlan_port_write_new(d, c, nr);
 604         else
 605                 handle_vlan_port_write_old(d, c, nr);
 606
 607         kfree(c);
 608         return 0;
 609 }
 610
 611 #define set_switch(state) \
 612         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 613
 614 static int handle_enable_read(void *driver, char *buf, int nr)
 615 {
 616         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 617 }
 618
 619 static int handle_enable_write(void *driver, char *buf, int nr)
 620 {
 621         set_switch(buf[0] == '1');
 622
 623         return 0;
 624 }
 625
 626 static int handle_port_enable_read(void *driver, char *buf, int nr)
 627 {
 628         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 629 }
 630
 631 static int handle_port_enable_write(void *driver, char *buf, int nr)
 632 {
 633         u16 val16;
 634
 635         if (buf[0] == '0')
 636                 val16 = 3; /* disabled */
 637         else if (buf[0] == '1')
 638                 val16 = 0; /* enabled */
 639         else
 640                 return -EINVAL;
 641
 642         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 643                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 644
 645         return 0;
 646 }
 647
 648 static int handle_port_media_read(void *driver, char *buf, int nr)
 649 {
 650         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 651         int media, len;
 652
 653         if (bmcr & BMCR_ANENABLE)
 654                 media = SWITCH_MEDIA_AUTO;
 655         else {
 656                 if (bmcr & BMCR_SPEED1000)
 657                         media = SWITCH_MEDIA_1000;
 658                 else if (bmcr & BMCR_SPEED100)
 659                         media = SWITCH_MEDIA_100;
 660                 else
 661                         media = 0;
 662
 663                 if (bmcr & BMCR_FULLDPLX)
 664                         media |= SWITCH_MEDIA_FD;
 665         }
 666
 667         len = switch_print_media(buf, media);
 668         return len + sprintf(buf + len, "\n");
 669 }
 670
 671 static int handle_port_media_write(void *driver, char *buf, int nr)
 672 {
 673         int media = switch_parse_media(buf);
 674         u16 bmcr, bmcr_mask;
 675
 676         if (media & SWITCH_MEDIA_AUTO)
 677                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 678         else {
 679                 if (media & SWITCH_MEDIA_1000) {
 680                         if (!robo.gmii)
 681                                 return -EINVAL;
 682                         bmcr = BMCR_SPEED1000;
 683                 }
 684                 else if (media & SWITCH_MEDIA_100)
 685                         bmcr = BMCR_SPEED100;
 686                 else
 687                         bmcr = 0;
 688
 689                 if (media & SWITCH_MEDIA_FD)
 690                         bmcr |= BMCR_FULLDPLX;
 691         }
 692
 693         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 694         mdio_write(robo.port[nr], MII_BMCR,
 695                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 696
 697         return 0;
 698 }
 699
 700 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 701 {
 702         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 703 }
 704
 705 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 706 {
 707         __u16 val16;
 708         int disable = ((buf[0] != '1') ? 1 : 0);
 709
 710         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0);
 711         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 712                 val16 | (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 713
 714         val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1);
 715         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 716                 val16 | (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 717                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 718
 719         if (robo.devid != ROBO_DEVICE_ID_5325)
 720                 return 0;
 721
 722         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 723                 (1 << 6) /* drop invalid VID frames */);
 724         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 725                 (1 << 3) /* drop miss V table frames */);
 726
 727         return 0;
 728 }
 729
 730 static void handle_reset_old(switch_driver *d, char *buf, int nr)
 731 {
 732         int j;
 733         __u16 val16;
 734
 735         /* reset vlans */
 736         for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
 737                 /* write config now */
 738                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 739                 if (robo.is_5365)
 740                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
 741                 else
 742                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 743                 robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
 744                                                             ROBO_VLAN_TABLE_ACCESS,
 745                              val16);
 746         }
 747 }
 748
 749 static void handle_reset_new(switch_driver *d, char *buf, int nr)
 750 {
 751         int j;
 752         __u8 vtbl_entry, vtbl_index, vtbl_access;
 753
 754         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 755             (robo.devid == ROBO_DEVICE_ID_53115) ||
 756             (robo.devid == ROBO_DEVICE_ID_53125)) {
 757                 vtbl_access = ROBO_VTBL_ACCESS_5395;
 758                 vtbl_index = ROBO_VTBL_INDX_5395;
 759                 vtbl_entry = ROBO_VTBL_ENTRY_5395;
 760         } else {
 761                 vtbl_access = ROBO_VTBL_ACCESS;
 762                 vtbl_index = ROBO_VTBL_INDX;
 763                 vtbl_entry = ROBO_VTBL_ENTRY;
 764         }
 765
 766         for (j = 0; j <= VLAN_ID_MAX; j++) {
 767                 /* write config now */
 768                 robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, 0);
 769                 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, j);
 770                 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
 771         }
 772 }
 773
 774 static int handle_reset(void *driver, char *buf, int nr)
 775 {
 776         int j;
 777         switch_driver *d = (switch_driver *) driver;
 778
 779         /* disable switching */
 780         set_switch(0);
 781
 782         if (robo.devid != ROBO_DEVICE_ID_5325)
 783                 handle_reset_new(d, buf, nr);
 784         else
 785                 handle_reset_old(d, buf, nr);
 786
 787         /* reset ports to a known good state */
 788         for (j = 0; j < d->ports; j++) {
 789                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 790                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 791         }
 792
 793         /* enable switching */
 794         set_switch(1);
 795
 796         /* enable vlans */
 797         handle_enable_vlan_write(driver, "1", 0);
 798
 799         return 0;
 800 }
 801
 802 static int __init robo_init(void)
 803 {
 804         int notfound = 1;
 805         char *device;
 806
 807         device = strdup("ethX");
 808         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 809                 if (! switch_device_registered (device))
 810                         notfound = robo_probe(device);
 811         }
 812         device[3]--;
 813
 814         if (notfound) {
 815                 kfree(device);
 816                 return -ENODEV;
 817         } else {
 818                 static const switch_config cfg[] = {
 819                         {
 820                                 .name   = "enable",
 821                                 .read   = handle_enable_read,
 822                                 .write  = handle_enable_write
 823                         }, {
 824                                 .name   = "enable_vlan",
 825                                 .read   = handle_enable_vlan_read,
 826                                 .write  = handle_enable_vlan_write
 827                         }, {
 828                                 .name   = "reset",
 829                                 .read   = NULL,
 830                                 .write  = handle_reset
 831                         }, { NULL, },
 832                 };
 833                 static const switch_config port[] = {
 834                         {
 835                                 .name   = "enable",
 836                                 .read   = handle_port_enable_read,
 837                                 .write  = handle_port_enable_write
 838                         }, {
 839                                 .name   = "media",
 840                                 .read   = handle_port_media_read,
 841                                 .write  = handle_port_media_write
 842                         }, { NULL, },
 843                 };
 844                 static const switch_config vlan[] = {
 845                         {
 846                                 .name   = "ports",
 847                                 .read   = handle_vlan_port_read,
 848                                 .write  = handle_vlan_port_write
 849                         }, { NULL, },
 850                 };
 851                 switch_driver driver = {
 852                         .name                   = DRIVER_NAME,
 853                         .version                = DRIVER_VERSION,
 854                         .interface              = device,
 855                         .cpuport                = 5,
 856                         .ports                  = 6,
 857                         .vlans                  = 16,
 858                         .driver_handlers        = cfg,
 859                         .port_handlers          = port,
 860                         .vlan_handlers          = vlan,
 861                 };
 862                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 863                         driver.ports = 9;
 864                         driver.cpuport = 8;
 865                 }
 866                 if (robo.is_5365)
 867                         snprintf(driver.dev_name, SWITCH_NAME_BUFSZ, "BCM5365");
 868                 else
 869                         snprintf(driver.dev_name, SWITCH_NAME_BUFSZ, "BCM5%s%x", robo.devid & 0xff00 ? "" : "3", robo.devid);
 870
 871                 return switch_register_driver(&driver);
 872         }
 873 }
 874
 875 static void __exit robo_exit(void)
 876 {
 877         switch_unregister_driver(DRIVER_NAME);
 878         if (robo.dev)
 879                 dev_put(robo.dev);
 880         if (robo.gpio_robo_reset >= 0)
 881                 gpio_free(robo.gpio_robo_reset);
 882         if (robo.gpio_lanports_enable >= 0)
 883                 gpio_free(robo.gpio_lanports_enable);
 884         kfree(robo.device);
 885 }
 886
 887
 888 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 889 MODULE_LICENSE("GPL");
 890
 891 module_init(robo_init);
 892 module_exit(robo_exit);