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"
38 #define ROBO_PHY_ADDR 0x1E /* robo switch phy address */
41 #define REG_MII_PAGE 0x10 /* MII Page register */
42 #define REG_MII_ADDR 0x11 /* MII Address register */
43 #define REG_MII_DATA0 0x18 /* MII Data register 0 */
45 #define REG_MII_PAGE_ENABLE 1
46 #define REG_MII_ADDR_WRITE 1
47 #define REG_MII_ADDR_READ 2
49 /* Private et.o ioctls */
50 #define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
51 #define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
53 static int use_et = 0;
54 static int is_5350 = 0;
55 static struct ifreq ifr;
56 static struct net_device *dev;
58 static int do_ioctl(int cmd, void *buf)
60 mm_segment_t old_fs = get_fs();
64 ifr.ifr_data = (caddr_t) buf;
67 ret = dev->do_ioctl(dev, &ifr, cmd);
73 static u16 mdio_read(__u16 phy_id, __u8 reg)
76 int args[2] = { reg };
78 if (phy_id != ROBO_PHY_ADDR) {
80 "Access to real 'phy' registers unavaliable.\n"
81 "Upgrade kernel driver.\n");
87 if (do_ioctl(SIOCGETCPHYRD, &args) < 0) {
88 printk("[%s:%d] SIOCGETCPHYRD failed!\n", __FILE__, __LINE__);
94 struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data;
98 if (do_ioctl(SIOCGMIIREG, NULL) < 0) {
99 printk("[%s:%d] SIOCGMIIREG failed!\n", __FILE__, __LINE__);
108 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
111 int args[2] = { reg, val };
113 if (phy_id != ROBO_PHY_ADDR) {
115 "Access to real 'phy' registers unavaliable.\n"
116 "Upgrade kernel driver.\n");
121 if (do_ioctl(SIOCSETCPHYWR, args) < 0) {
122 printk("[%s:%d] SIOCGETCPHYWR failed!\n", __FILE__, __LINE__);
126 struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&ifr.ifr_data;
128 mii->phy_id = phy_id;
132 if (do_ioctl(SIOCSMIIREG, NULL) < 0) {
133 printk("[%s:%d] SIOCSMIIREG failed!\n", __FILE__, __LINE__);
139 static int robo_reg(__u8 page, __u8 reg, __u8 op)
143 /* set page number */
144 mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
145 (page << 8) | REG_MII_PAGE_ENABLE);
147 /* set register address */
148 mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
151 /* check if operation completed */
153 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
157 printk("[%s:%d] timeout in robo_reg!\n", __FILE__, __LINE__);
162 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
166 robo_reg(page, reg, REG_MII_ADDR_READ);
168 for (i = 0; i < count; i++)
169 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
172 static __u16 robo_read16(__u8 page, __u8 reg)
174 robo_reg(page, reg, REG_MII_ADDR_READ);
176 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
179 static __u32 robo_read32(__u8 page, __u8 reg)
181 robo_reg(page, reg, REG_MII_ADDR_READ);
183 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) +
184 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
187 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
190 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
192 robo_reg(page, reg, REG_MII_ADDR_WRITE);
195 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
198 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 65535);
199 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
201 robo_reg(page, reg, REG_MII_ADDR_WRITE);
204 /* checks that attached switch is 5325E/5350 */
205 static int robo_vlan5350()
207 /* set vlan access id to 15 and read it back */
209 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
211 /* 5365 will refuse this as it does not have this reg */
212 return (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) == val16);
217 static int robo_probe(char *devname)
219 struct ethtool_drvinfo info;
223 printk("Probing device %s: ", devname);
224 strcpy(ifr.ifr_name, devname);
226 if ((dev = dev_get_by_name(devname)) == NULL) {
227 printk("No such device\n");
231 info.cmd = ETHTOOL_GDRVINFO;
232 if (do_ioctl(SIOCETHTOOL, (void *) &info) < 0) {
233 printk("SIOCETHTOOL: not supported\n");
237 /* try access using MII ioctls - get phy address */
238 if (do_ioctl(SIOCGMIIPHY, NULL) < 0) {
241 /* got phy address check for robo address */
242 struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data;
243 if (mii->phy_id != ROBO_PHY_ADDR) {
244 printk("Invalid phy address (%d)\n", mii->phy_id);
249 phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
250 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
252 if (phyid == 0xffffffff || phyid == 0x55210022) {
253 printk("No Robo switch in managed mode found\n");
257 is_5350 = robo_vlan5350();
264 static int handle_vlan_port_read(void *driver, char *buf, int nr)
270 val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
274 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
276 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
277 if ((val32 & (1 << 20)) /* valid */) {
278 for (j = 0; j < 6; j++) {
279 if (val32 & (1 << j)) {
280 len += sprintf(buf + len, "%d%s\t", j,
281 (val32 & (1 << (j + 6))) ? (j == 5 ? "u" : "") : "t");
284 len += sprintf(buf + len, "\n");
287 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
289 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
290 if ((val16 & (1 << 14)) /* valid */) {
291 for (j = 0; j < 6; j++) {
292 if (val16 & (1 << j)) {
293 len += sprintf(buf + len, "%d%s\t", j, (val16 & (1 << (j + 7))) ?
294 (j == 5 ? "u" : "") : "t");
297 len += sprintf(buf + len, "\n");
304 static int handle_vlan_port_write(void *driver, char *buf, int nr)
306 switch_driver *d = (switch_driver *) driver;
307 switch_vlan_config *c = switch_parse_vlan(d, buf);
314 for (j = 0; j < d->ports; j++) {
315 if ((c->untag | c->pvid) & (1 << j))
316 /* change default vlan tag */
317 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
320 /* write config now */
321 val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
323 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
324 (1 << 20) /* valid */ | (c->untag << 6) | c->port);
325 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
327 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
328 (1 << 14) /* valid */ | (c->untag << 7) | c->port);
329 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
335 static int __init robo_init()
337 char *device = "ethX";
340 for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
341 notfound = robo_probe(device);
348 switch_config vlan[] = {
349 {"ports", handle_vlan_port_read, handle_vlan_port_write},
352 switch_driver driver = {
358 driver_handlers: NULL,
363 return switch_register_driver(&driver);
367 static void __exit robo_exit()
369 switch_unregister_driver(DRIVER_NAME);
373 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
374 MODULE_LICENSE("GPL");
376 module_init(robo_init);
377 module_exit(robo_exit);