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_5350;
  76         u8 gmii;                        /* gigabit mii */
  77         int gpio_robo_reset;
  78         int gpio_lanports_enable;
  79         struct ifreq ifr;
  80         struct net_device *dev;
  81         unsigned char port[6];
  82 };
  83
  84 /* Currently we can only have one device in the system. */
  85 static struct robo_switch robo;
  86
  87
  88 static int do_ioctl(int cmd)
  89 {
  90         mm_segment_t old_fs = get_fs();
  91         int ret;
  92
  93         set_fs(KERNEL_DS);
  94         ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
  95         set_fs(old_fs);
  96
  97         return ret;
  98 }
  99
 100 static u16 mdio_read(__u16 phy_id, __u8 reg)
 101 {
 102         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 103         int err;
 104
 105         mii->phy_id = phy_id;
 106         mii->reg_num = reg;
 107
 108         err = do_ioctl(SIOCGMIIREG);
 109         if (err < 0) {
 110                 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
 111
 112                 return 0xffff;
 113         }
 114
 115         return mii->val_out;
 116 }
 117
 118 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 119 {
 120         struct mii_ioctl_data *mii = if_mii(&robo.ifr);
 121         int err;
 122
 123         mii->phy_id = phy_id;
 124         mii->reg_num = reg;
 125         mii->val_in = val;
 126
 127         err = do_ioctl(SIOCSMIIREG);
 128         if (err < 0) {
 129                 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
 130                 return;
 131         }
 132 }
 133
 134 static int robo_reg(__u8 page, __u8 reg, __u8 op)
 135 {
 136         int i = 3;
 137
 138         /* set page number */
 139         mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
 140                 (page << 8) | REG_MII_PAGE_ENABLE);
 141
 142         /* set register address */
 143         mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
 144                 (reg << 8) | op);
 145
 146         /* check if operation completed */
 147         while (i--) {
 148                 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
 149                         return 0;
 150         }
 151
 152         printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
 153
 154         return 1;
 155 }
 156
 157 /*
 158 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
 159 {
 160         int i;
 161
 162         robo_reg(page, reg, REG_MII_ADDR_READ);
 163
 164         for (i = 0; i < count; i++)
 165                 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
 166 }
 167 */
 168
 169 static __u16 robo_read16(__u8 page, __u8 reg)
 170 {
 171         robo_reg(page, reg, REG_MII_ADDR_READ);
 172
 173         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
 174 }
 175
 176 static __u32 robo_read32(__u8 page, __u8 reg)
 177 {
 178         robo_reg(page, reg, REG_MII_ADDR_READ);
 179
 180         return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
 181                 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
 182 }
 183
 184 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
 185 {
 186         /* write data */
 187         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
 188
 189         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 190 }
 191
 192 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
 193 {
 194         /* write data */
 195         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
 196         mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
 197
 198         robo_reg(page, reg, REG_MII_ADDR_WRITE);
 199 }
 200
 201 /* checks that attached switch is 5325/5352/5354/5356/5357/53115 */
 202 static int robo_vlan5350(__u32 phyid)
 203 {
 204         /* set vlan access id to 15 and read it back */
 205         __u16 val16 = 15;
 206         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 207
 208         /* 5365 will refuse this as it does not have this reg */
 209         if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) != val16)
 210                 return 0;
 211         /* gigabit ? */
 212         if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
 213                 robo.gmii = ((mdio_read(0, 0x0f) & 0xf000) != 0);
 214         /* 53115 ? */
 215         if (robo.gmii && robo_read32(ROBO_STAT_PAGE, ROBO_LSA_IM_PORT) != 0) {
 216                 robo_write16(ROBO_ARLIO_PAGE, ROBO_VTBL_INDX_5395, val16);
 217                 robo_write16(ROBO_ARLIO_PAGE, ROBO_VTBL_ACCESS_5395,
 218                                          (1 << 7) /* start */ | 1 /* read */);
 219                 if (robo_read16(ROBO_ARLIO_PAGE, ROBO_VTBL_ACCESS_5395) == 1 &&
 220                     robo_read16(ROBO_ARLIO_PAGE, ROBO_VTBL_INDX_5395) == val16)
 221                         return 4;
 222         }
 223         /* dirty trick for 5356/5357 */
 224         if ((phyid & 0xfff0ffff ) == 0x5da00362 ||
 225             (phyid & 0xfff0ffff ) == 0x5e000362)
 226                 return 3;
 227         /* 5325/5352/5354*/
 228         return 1;
 229 }
 230
 231 static int robo_switch_enable(void)
 232 {
 233         unsigned int i, last_port;
 234         u16 val;
 235 #ifdef CONFIG_BCM47XX
 236         char buf[20];
 237 #endif
 238
 239         val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 240         if (!(val & (1 << 1))) {
 241                 /* Unmanaged mode */
 242                 val &= ~(1 << 0);
 243                 /* With forwarding */
 244                 val |= (1 << 1);
 245                 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
 246                 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
 247                 if (!(val & (1 << 1))) {
 248                         printk(KERN_ERR PFX "Failed to enable switch\n");
 249                         return -EBUSY;
 250                 }
 251
 252                 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
 253                                 ROBO_PORT6_CTRL : ROBO_PORT3_CTRL;
 254                 for (i = ROBO_PORT0_CTRL; i < last_port + 1; i++)
 255                         robo_write16(ROBO_CTRL_PAGE, i, 0);
 256         }
 257
 258 #ifdef CONFIG_BCM47XX
 259         /* WAN port LED, except for Netgear WGT634U */
 260         if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
 261                 if (strcmp(buf, "cfe") != 0)
 262                         robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
 263         }
 264 #endif
 265         return 0;
 266 }
 267
 268 static void robo_switch_reset(void)
 269 {
 270         if ((robo.devid == ROBO_DEVICE_ID_5395) ||
 271             (robo.devid == ROBO_DEVICE_ID_5397) ||
 272             (robo.devid == ROBO_DEVICE_ID_5398)) {
 273                 /* Trigger a software reset. */
 274                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
 275                 mdelay(500);
 276                 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
 277         }
 278 }
 279
 280 #ifdef CONFIG_BCM47XX
 281 static int get_gpio_pin(const char *name)
 282 {
 283         int i, err;
 284         char nvram_var[10];
 285         char buf[30];
 286
 287         for (i = 0; i < 16; i++) {
 288                 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
 289                 if (err <= 0)
 290                         continue;
 291                 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
 292                 if (err <= 0)
 293                         continue;
 294                 if (!strcmp(name, buf))
 295                         return i;
 296         }
 297         return -1;
 298 }
 299 #endif
 300
 301 static int robo_probe(char *devname)
 302 {
 303         __u32 phyid;
 304         unsigned int i;
 305         int err = -1;
 306         struct mii_ioctl_data *mii;
 307
 308         printk(KERN_INFO PFX "Probing device '%s'\n", devname);
 309         strcpy(robo.ifr.ifr_name, devname);
 310
 311         if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
 312                 printk(KERN_ERR PFX "No such device\n");
 313                 err = -ENODEV;
 314                 goto err_done;
 315         }
 316         if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
 317                 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
 318                 err = -ENXIO;
 319                 goto err_put;
 320         }
 321
 322         robo.device = devname;
 323         for (i = 0; i < 5; i++)
 324                 robo.port[i] = i;
 325         robo.port[5] = 8;
 326
 327         /* try access using MII ioctls - get phy address */
 328         err = do_ioctl(SIOCGMIIPHY);
 329         if (err < 0) {
 330                 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
 331                 goto err_put;
 332         }
 333
 334         /* got phy address check for robo address */
 335         mii = if_mii(&robo.ifr);
 336         if ((mii->phy_id != ROBO_PHY_ADDR) &&
 337             (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
 338             (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
 339                 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
 340                 err = -ENODEV;
 341                 goto err_put;
 342         }
 343
 344 #ifdef CONFIG_BCM47XX
 345         robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
 346         if (robo.gpio_lanports_enable >= 0) {
 347                 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
 348                 if (err) {
 349                         printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
 350                                err, robo.gpio_lanports_enable);
 351                         goto err_put;
 352                 }
 353                 gpio_direction_output(robo.gpio_lanports_enable, 1);
 354                 mdelay(5);
 355         }
 356
 357         robo.gpio_robo_reset = get_gpio_pin("robo_reset");
 358         if (robo.gpio_robo_reset >= 0) {
 359                 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
 360                 if (err) {
 361                         printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
 362                                err, robo.gpio_robo_reset);
 363                         goto err_gpio_robo;
 364                 }
 365                 gpio_set_value(robo.gpio_robo_reset, 0);
 366                 gpio_direction_output(robo.gpio_robo_reset, 1);
 367                 gpio_set_value(robo.gpio_robo_reset, 0);
 368                 mdelay(50);
 369
 370                 gpio_set_value(robo.gpio_robo_reset, 1);
 371                 mdelay(20);
 372         } else {
 373                 // TODO: reset the internal robo switch
 374         }
 375 #endif
 376
 377         phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
 378                 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
 379
 380         if (phyid == 0xffffffff || phyid == 0x55210022) {
 381                 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
 382                 err = -ENODEV;
 383                 goto err_gpio_lanports;
 384         }
 385
 386         /* Get the device ID */
 387         for (i = 0; i < 10; i++) {
 388                 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
 389                 if (robo.devid)
 390                         break;
 391                 udelay(10);
 392         }
 393         if (!robo.devid)
 394                 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
 395         robo.is_5350 = robo_vlan5350(phyid);
 396
 397         robo_switch_reset();
 398         err = robo_switch_enable();
 399         if (err)
 400                 goto err_gpio_lanports;
 401
 402         printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
 403                 robo.is_5350 ? " It's a 5350." : "", devname);
 404
 405         return 0;
 406
 407 err_gpio_lanports:
 408         if (robo.gpio_lanports_enable >= 0)
 409                 gpio_free(robo.gpio_lanports_enable);
 410 err_gpio_robo:
 411         if (robo.gpio_robo_reset >= 0)
 412                 gpio_free(robo.gpio_robo_reset);
 413 err_put:
 414         dev_put(robo.dev);
 415         robo.dev = NULL;
 416 err_done:
 417         return err;
 418 }
 419
 420
 421 static int handle_vlan_port_read(void *driver, char *buf, int nr)
 422 {
 423         __u16 val16;
 424         int len = 0;
 425         int j;
 426
 427         val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
 428
 429         if (robo.is_5350) {
 430                 u32 val32;
 431                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 432                 /* actual read */
 433                 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 434                 if ((val32 & (1 << 20)) /* valid */) {
 435                         for (j = 0; j < 6; j++) {
 436                                 if (val32 & (1 << j)) {
 437                                         len += sprintf(buf + len, "%d", j);
 438                                         if (val32 & (1 << (j + 6))) {
 439                                                 if (j == 5) buf[len++] = 'u';
 440                                         } else {
 441                                                 buf[len++] = 't';
 442                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 443                                                         buf[len++] = '*';
 444                                         }
 445                                         buf[len++] = '\t';
 446                                 }
 447                         }
 448                         len += sprintf(buf + len, "\n");
 449                 }
 450         } else {
 451                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 452                 /* actual read */
 453                 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
 454                 if ((val16 & (1 << 14)) /* valid */) {
 455                         for (j = 0; j < 6; j++) {
 456                                 if (val16 & (1 << j)) {
 457                                         len += sprintf(buf + len, "%d", j);
 458                                         if (val16 & (1 << (j + 7))) {
 459                                                 if (j == 5) buf[len++] = 'u';
 460                                         } else {
 461                                                 buf[len++] = 't';
 462                                                 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
 463                                                         buf[len++] = '*';
 464                                         }
 465                                         buf[len++] = '\t';
 466                                 }
 467                         }
 468                         len += sprintf(buf + len, "\n");
 469                 }
 470         }
 471
 472         buf[len] = '\0';
 473
 474         return len;
 475 }
 476
 477 static int handle_vlan_port_write(void *driver, char *buf, int nr)
 478 {
 479         switch_driver *d = (switch_driver *) driver;
 480         switch_vlan_config *c = switch_parse_vlan(d, buf);
 481         int j;
 482         __u16 val16;
 483
 484         if (c == NULL)
 485                 return -EINVAL;
 486
 487         for (j = 0; j < d->ports; j++) {
 488                 if ((c->untag | c->pvid) & (1 << j))
 489                         /* change default vlan tag */
 490                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
 491         }
 492
 493         /* write config now */
 494
 495         if (robo.devid != ROBO_DEVICE_ID_5325) {
 496                 __u8 regoff = ((robo.devid == ROBO_DEVICE_ID_5395) ||
 497                         (robo.devid == ROBO_DEVICE_ID_53115)) ? 0x20 : 0;
 498
 499                 robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
 500                 robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
 501                 robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
 502                 kfree(c);
 503                 return 0;
 504         }
 505
 506         val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 507         if (robo.is_5350) {
 508                 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
 509                         (1 << 20) /* valid */ | (c->untag << 6) | c->port);
 510                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
 511         } else {
 512                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
 513                         (1 << 14)  /* valid */ | (c->untag << 7) | c->port);
 514                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 515         }
 516
 517         kfree(c);
 518         return 0;
 519 }
 520
 521 #define set_switch(state) \
 522         robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
 523
 524 static int handle_enable_read(void *driver, char *buf, int nr)
 525 {
 526         return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
 527 }
 528
 529 static int handle_enable_write(void *driver, char *buf, int nr)
 530 {
 531         set_switch(buf[0] == '1');
 532
 533         return 0;
 534 }
 535
 536 static int handle_port_enable_read(void *driver, char *buf, int nr)
 537 {
 538         return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
 539 }
 540
 541 static int handle_port_enable_write(void *driver, char *buf, int nr)
 542 {
 543         u16 val16;
 544
 545         if (buf[0] == '0')
 546                 val16 = 3; /* disabled */
 547         else if (buf[0] == '1')
 548                 val16 = 0; /* enabled */
 549         else
 550                 return -EINVAL;
 551
 552         robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
 553                 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
 554
 555         return 0;
 556 }
 557
 558 static int handle_port_media_read(void *driver, char *buf, int nr)
 559 {
 560         u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
 561         int media, len;
 562
 563         if (bmcr & BMCR_ANENABLE)
 564                 media = SWITCH_MEDIA_AUTO;
 565         else {
 566                 if (bmcr & BMCR_SPEED1000)
 567                         media = SWITCH_MEDIA_1000;
 568                 else if (bmcr & BMCR_SPEED100)
 569                         media = SWITCH_MEDIA_100;
 570                 else
 571                         media = 0;
 572
 573                 if (bmcr & BMCR_FULLDPLX)
 574                         media |= SWITCH_MEDIA_FD;
 575         }
 576
 577         len = switch_print_media(buf, media);
 578         return len + sprintf(buf + len, "\n");
 579 }
 580
 581 static int handle_port_media_write(void *driver, char *buf, int nr)
 582 {
 583         int media = switch_parse_media(buf);
 584         u16 bmcr, bmcr_mask;
 585
 586         if (media & SWITCH_MEDIA_AUTO)
 587                 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
 588         else {
 589                 if (media & SWITCH_MEDIA_1000) {
 590                         if (!robo.gmii)
 591                                 return -EINVAL;
 592                         bmcr = BMCR_SPEED1000;
 593                 }
 594                 else if (media & SWITCH_MEDIA_100)
 595                         bmcr = BMCR_SPEED100;
 596                 else
 597                         bmcr = 0;
 598
 599                 if (media & SWITCH_MEDIA_FD)
 600                         bmcr |= BMCR_FULLDPLX;
 601         }
 602
 603         bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
 604         mdio_write(robo.port[nr], MII_BMCR,
 605                 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
 606
 607         return 0;
 608 }
 609
 610 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
 611 {
 612         return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
 613 }
 614
 615 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 616 {
 617         int disable = ((buf[0] != '1') ? 1 : 0);
 618
 619         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
 620                 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
 621         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
 622                 (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
 623                 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
 624
 625         if (robo.devid != ROBO_DEVICE_ID_5325)
 626                 return 0;
 627
 628         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
 629                 (1 << 6) /* drop invalid VID frames */);
 630         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
 631                 (1 << 3) /* drop miss V table frames */);
 632
 633         return 0;
 634 }
 635
 636 static int handle_reset(void *driver, char *buf, int nr)
 637 {
 638         switch_driver *d = (switch_driver *) driver;
 639         int j;
 640         __u16 val16;
 641
 642         /* disable switching */
 643         set_switch(0);
 644
 645         /* reset vlans */
 646         for (j = 0; j <= ((robo.is_5350) ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) {
 647                 /* write config now */
 648                 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
 649                 if (robo.is_5350)
 650                         robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, 0);
 651                 else
 652                         robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
 653                 robo_write16(ROBO_VLAN_PAGE, robo.is_5350 ? ROBO_VLAN_TABLE_ACCESS_5350 :
 654                                                             ROBO_VLAN_TABLE_ACCESS,
 655                              val16);
 656         }
 657
 658         /* reset ports to a known good state */
 659         for (j = 0; j < d->ports; j++) {
 660                 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
 661                 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
 662         }
 663
 664         /* enable switching */
 665         set_switch(1);
 666
 667         /* enable vlans */
 668         handle_enable_vlan_write(driver, "1", 0);
 669
 670         return 0;
 671 }
 672
 673 static int __init robo_init(void)
 674 {
 675         int notfound = 1;
 676         char *device;
 677
 678         device = strdup("ethX");
 679         for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
 680                 if (! switch_device_registered (device))
 681                         notfound = robo_probe(device);
 682         }
 683         device[3]--;
 684
 685         if (notfound) {
 686                 kfree(device);
 687                 return -ENODEV;
 688         } else {
 689                 static const switch_config cfg[] = {
 690                         {
 691                                 .name   = "enable",
 692                                 .read   = handle_enable_read,
 693                                 .write  = handle_enable_write
 694                         }, {
 695                                 .name   = "enable_vlan",
 696                                 .read   = handle_enable_vlan_read,
 697                                 .write  = handle_enable_vlan_write
 698                         }, {
 699                                 .name   = "reset",
 700                                 .read   = NULL,
 701                                 .write  = handle_reset
 702                         }, { NULL, },
 703                 };
 704                 static const switch_config port[] = {
 705                         {
 706                                 .name   = "enable",
 707                                 .read   = handle_port_enable_read,
 708                                 .write  = handle_port_enable_write
 709                         }, {
 710                                 .name   = "media",
 711                                 .read   = handle_port_media_read,
 712                                 .write  = handle_port_media_write
 713                         }, { NULL, },
 714                 };
 715                 static const switch_config vlan[] = {
 716                         {
 717                                 .name   = "ports",
 718                                 .read   = handle_vlan_port_read,
 719                                 .write  = handle_vlan_port_write
 720                         }, { NULL, },
 721                 };
 722                 switch_driver driver = {
 723                         .name                   = DRIVER_NAME,
 724                         .version                = DRIVER_VERSION,
 725                         .interface              = device,
 726                         .cpuport                = 5,
 727                         .ports                  = 6,
 728                         .vlans                  = 16,
 729                         .driver_handlers        = cfg,
 730                         .port_handlers          = port,
 731                         .vlan_handlers          = vlan,
 732                 };
 733                 if (robo.devid != ROBO_DEVICE_ID_5325) {
 734                         driver.ports = 9;
 735                         driver.cpuport = 8;
 736                 }
 737
 738                 return switch_register_driver(&driver);
 739         }
 740 }
 741
 742 static void __exit robo_exit(void)
 743 {
 744         switch_unregister_driver(DRIVER_NAME);
 745         if (robo.dev)
 746                 dev_put(robo.dev);
 747         if (robo.gpio_robo_reset >= 0)
 748                 gpio_free(robo.gpio_robo_reset);
 749         if (robo.gpio_lanports_enable >= 0)
 750                 gpio_free(robo.gpio_lanports_enable);
 751         kfree(robo.device);
 752 }
 753
 754
 755 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 756 MODULE_LICENSE("GPL");
 757
 758 module_init(robo_init);
 759 module_exit(robo_exit);