2 * Broadcom BCM5325E/536x switch configuration module
4 * Copyright (C) 2005 Felix Fietkau <nbd@nbd.name>
5 * Based on 'robocfg' by Oleg I. Vdovikin
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 #include <linux/config.h>
24 #include <linux/module.h>
25 #include <linux/init.h>
27 #include <linux/if_arp.h>
28 #include <linux/sockios.h>
29 #include <linux/ethtool.h>
30 #include <linux/mii.h>
31 #include <asm/uaccess.h>
33 #include "switch-core.h"
36 #define DRIVER_NAME "bcm53xx"
37 #define DRIVER_VERSION "0.01"
39 #define ROBO_PHY_ADDR 0x1E /* robo switch phy address */
42 #define REG_MII_PAGE 0x10 /* MII Page register */
43 #define REG_MII_ADDR 0x11 /* MII Address register */
44 #define REG_MII_DATA0 0x18 /* MII Data register 0 */
46 #define REG_MII_PAGE_ENABLE 1
47 #define REG_MII_ADDR_WRITE 1
48 #define REG_MII_ADDR_READ 2
50 /* Private et.o ioctls */
51 #define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
52 #define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
54 static int use_et = 0;
55 static int is_5350 = 0;
56 static struct ifreq ifr;
57 static struct net_device *dev;
58 static unsigned char port[6] = { 0, 1, 2, 3, 4, 8 };
60 static int do_ioctl(int cmd, void *buf)
62 mm_segment_t old_fs = get_fs();
66 ifr.ifr_data = (caddr_t) buf;
69 ret = dev->do_ioctl(dev, &ifr, cmd);
75 static u16 mdio_read(__u16 phy_id, __u8 reg)
78 int args[2] = { reg };
80 if (phy_id != ROBO_PHY_ADDR) {
82 "Access to real 'phy' registers unavaliable.\n"
83 "Upgrade kernel driver.\n");
89 if (do_ioctl(SIOCGETCPHYRD, &args) < 0) {
90 printk("[%s:%d] SIOCGETCPHYRD failed!\n", __FILE__, __LINE__);
96 struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data;
100 if (do_ioctl(SIOCGMIIREG, NULL) < 0) {
101 printk("[%s:%d] SIOCGMIIREG failed!\n", __FILE__, __LINE__);
110 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
113 int args[2] = { reg, val };
115 if (phy_id != ROBO_PHY_ADDR) {
117 "Access to real 'phy' registers unavaliable.\n"
118 "Upgrade kernel driver.\n");
123 if (do_ioctl(SIOCSETCPHYWR, args) < 0) {
124 printk("[%s:%d] SIOCGETCPHYWR failed!\n", __FILE__, __LINE__);
128 struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&ifr.ifr_data;
130 mii->phy_id = phy_id;
134 if (do_ioctl(SIOCSMIIREG, NULL) < 0) {
135 printk("[%s:%d] SIOCSMIIREG failed!\n", __FILE__, __LINE__);
141 static int robo_reg(__u8 page, __u8 reg, __u8 op)
145 /* set page number */
146 mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
147 (page << 8) | REG_MII_PAGE_ENABLE);
149 /* set register address */
150 mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
153 /* check if operation completed */
155 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
159 printk("[%s:%d] timeout in robo_reg!\n", __FILE__, __LINE__);
164 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
168 robo_reg(page, reg, REG_MII_ADDR_READ);
170 for (i = 0; i < count; i++)
171 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
174 static __u16 robo_read16(__u8 page, __u8 reg)
176 robo_reg(page, reg, REG_MII_ADDR_READ);
178 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
181 static __u32 robo_read32(__u8 page, __u8 reg)
183 robo_reg(page, reg, REG_MII_ADDR_READ);
185 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) +
186 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
189 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
192 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
194 robo_reg(page, reg, REG_MII_ADDR_WRITE);
197 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
200 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 65535);
201 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
203 robo_reg(page, reg, REG_MII_ADDR_WRITE);
206 /* checks that attached switch is 5325E/5350 */
207 static int robo_vlan5350()
209 /* set vlan access id to 15 and read it back */
211 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
213 /* 5365 will refuse this as it does not have this reg */
214 return (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) == val16);
219 static int robo_probe(char *devname)
221 struct ethtool_drvinfo info;
225 printk("Probing device %s: ", devname);
226 strcpy(ifr.ifr_name, devname);
228 if ((dev = dev_get_by_name(devname)) == NULL) {
229 printk("No such device\n");
233 info.cmd = ETHTOOL_GDRVINFO;
234 if (do_ioctl(SIOCETHTOOL, (void *) &info) < 0) {
235 printk("SIOCETHTOOL: not supported\n");
239 /* try access using MII ioctls - get phy address */
240 if (do_ioctl(SIOCGMIIPHY, NULL) < 0) {
243 /* got phy address check for robo address */
244 struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data;
245 if (mii->phy_id != ROBO_PHY_ADDR) {
246 printk("Invalid phy address (%d)\n", mii->phy_id);
251 phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
252 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
254 if (phyid == 0xffffffff || phyid == 0x55210022) {
255 printk("No Robo switch in managed mode found\n");
259 is_5350 = robo_vlan5350();
266 static int handle_vlan_port_read(void *driver, char *buf, int nr)
272 val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
276 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
278 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
279 if ((val32 & (1 << 20)) /* valid */) {
280 for (j = 0; j < 6; j++) {
281 if (val32 & (1 << j)) {
282 len += sprintf(buf + len, "%d", j);
283 if (val32 & (1 << (j + 6))) {
284 if (j == 5) buf[len++] = 'u';
287 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
293 len += sprintf(buf + len, "\n");
296 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
298 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
299 if ((val16 & (1 << 14)) /* valid */) {
300 for (j = 0; j < 6; j++) {
301 if (val16 & (1 << j)) {
302 len += sprintf(buf + len, "%d", j);
303 if (val16 & (1 << (j + 7))) {
304 if (j == 5) buf[len++] = 'u';
307 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
313 len += sprintf(buf + len, "\n");
320 static int handle_vlan_port_write(void *driver, char *buf, int nr)
322 switch_driver *d = (switch_driver *) driver;
323 switch_vlan_config *c = switch_parse_vlan(d, buf);
330 for (j = 0; j < d->ports; j++) {
331 if ((c->untag | c->pvid) & (1 << j))
332 /* change default vlan tag */
333 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
336 /* write config now */
337 val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
339 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
340 (1 << 20) /* valid */ | (c->untag << 6) | c->port);
341 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
343 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
344 (1 << 14) /* valid */ | (c->untag << 7) | c->port);
345 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
351 #define set_switch(state) \
352 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
354 static int handle_enable_read(void *driver, char *buf, int nr)
356 return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
359 static int handle_enable_write(void *driver, char *buf, int nr)
361 set_switch(buf[0] == '1');
366 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
368 return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
371 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
373 int disable = ((buf[0] != '1') ? 1 : 0);
375 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
376 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
377 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
378 (1 << 1) | (1 << 2) | (1 << 3) /* RSV multicast */);
379 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
380 (1 << 6) /* drop invalid VID frames */);
381 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
382 (1 << 3) /* drop miss V table frames */);
387 static int handle_reset(void *driver, char *buf, int nr)
389 switch_driver *d = (switch_driver *) driver;
390 switch_vlan_config *c = switch_parse_vlan(d, buf);
397 /* disable switching */
401 for (j = 0; j <= (is_5350 ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) {
402 /* write config now */
403 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
405 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, 0);
407 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
408 robo_write16(ROBO_VLAN_PAGE, (is_5350 ? ROBO_VLAN_TABLE_ACCESS_5350 : ROBO_VLAN_TABLE_ACCESS), val16);
411 /* reset ports to a known good state */
412 for (j = 0; j < d->ports; j++) {
413 robo_write16(ROBO_CTRL_PAGE, port[j], 0x0000);
414 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
417 /* enable switching */
421 handle_enable_vlan_write(driver, "1", 0);
426 static int __init robo_init()
428 char *device = "ethX";
431 for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
432 notfound = robo_probe(device);
439 switch_config cfg[] = {
440 {"enable", handle_enable_read, handle_enable_write},
441 {"enable_vlan", handle_enable_vlan_read, handle_enable_vlan_write},
442 {"reset", NULL, handle_reset},
445 switch_config vlan[] = {
446 {"ports", handle_vlan_port_read, handle_vlan_port_write},
449 switch_driver driver = {
451 version: DRIVER_VERSION,
456 driver_handlers: cfg,
461 return switch_register_driver(&driver);
465 static void __exit robo_exit()
467 switch_unregister_driver(DRIVER_NAME);
471 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
472 MODULE_LICENSE("GPL");
474 module_init(robo_init);
475 module_exit(robo_exit);