2 * Broadcom BCM5325E/536x switch configuration module
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
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.
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.
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
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 <linux/delay.h>
32 #include <linux/gpio.h>
33 #include <asm/uaccess.h>
35 #include "switch-core.h"
39 #include <bcm47xx_nvram.h>
42 #define DRIVER_NAME "bcm53xx"
43 #define DRIVER_VERSION "0.02"
44 #define PFX "roboswitch: "
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 */
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 */
55 #define REG_MII_PAGE_ENABLE 1
56 #define REG_MII_ADDR_WRITE 1
57 #define REG_MII_ADDR_READ 2
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
67 /* Private et.o ioctls */
68 #define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
69 #define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
71 /* Data structure for a Roboswitch device. */
73 char *device
; /* The device name string (ethX) */
74 u16 devid
; /* ROBO_DEVICE_ID_53xx */
76 bool gmii
; /* gigabit mii */
78 int gpio_lanports_enable
;
80 struct net_device
*dev
;
81 unsigned char port
[9];
84 /* Currently we can only have one device in the system. */
85 static struct robo_switch robo
;
88 static int do_ioctl(int cmd
)
90 mm_segment_t old_fs
= get_fs();
94 ret
= robo
.dev
->netdev_ops
->ndo_do_ioctl(robo
.dev
, &robo
.ifr
, cmd
);
100 static u16
mdio_read(__u16 phy_id
, __u8 reg
)
102 struct mii_ioctl_data
*mii
= if_mii(&robo
.ifr
);
105 mii
->phy_id
= phy_id
;
108 err
= do_ioctl(SIOCGMIIREG
);
110 printk(KERN_ERR PFX
"failed to read mdio reg %i with err %i.\n", reg
, err
);
118 static void mdio_write(__u16 phy_id
, __u8 reg
, __u16 val
)
120 struct mii_ioctl_data
*mii
= if_mii(&robo
.ifr
);
123 mii
->phy_id
= phy_id
;
127 err
= do_ioctl(SIOCSMIIREG
);
129 printk(KERN_ERR PFX
"failed to write mdio reg: %i with err %i.\n", reg
, err
);
134 static int robo_reg(__u8 page
, __u8 reg
, __u8 op
)
138 /* set page number */
139 mdio_write(ROBO_PHY_ADDR
, REG_MII_PAGE
,
140 (page
<< 8) | REG_MII_PAGE_ENABLE
);
142 /* set register address */
143 mdio_write(ROBO_PHY_ADDR
, REG_MII_ADDR
,
146 /* check if operation completed */
148 if ((mdio_read(ROBO_PHY_ADDR
, REG_MII_ADDR
) & 3) == 0)
152 printk(KERN_ERR PFX
"timeout in robo_reg on page %i and reg %i with op %i.\n", page
, reg
, op
);
158 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
162 robo_reg(page, reg, REG_MII_ADDR_READ);
164 for (i = 0; i < count; i++)
165 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
169 static __u16
robo_read16(__u8 page
, __u8 reg
)
171 robo_reg(page
, reg
, REG_MII_ADDR_READ
);
173 return mdio_read(ROBO_PHY_ADDR
, REG_MII_DATA0
);
176 static __u32
robo_read32(__u8 page
, __u8 reg
)
178 robo_reg(page
, reg
, REG_MII_ADDR_READ
);
180 return mdio_read(ROBO_PHY_ADDR
, REG_MII_DATA0
) |
181 (mdio_read(ROBO_PHY_ADDR
, REG_MII_DATA0
+ 1) << 16);
184 static void robo_write16(__u8 page
, __u8 reg
, __u16 val16
)
187 mdio_write(ROBO_PHY_ADDR
, REG_MII_DATA0
, val16
);
189 robo_reg(page
, reg
, REG_MII_ADDR_WRITE
);
192 static void robo_write32(__u8 page
, __u8 reg
, __u32 val32
)
195 mdio_write(ROBO_PHY_ADDR
, REG_MII_DATA0
, val32
& 0xFFFF);
196 mdio_write(ROBO_PHY_ADDR
, REG_MII_DATA0
+ 1, val32
>> 16);
198 robo_reg(page
, reg
, REG_MII_ADDR_WRITE
);
201 /* checks that attached switch is 5365 */
202 static bool robo_bcm5365(void)
204 /* set vlan access id to 15 and read it back */
206 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS
, val16
);
208 /* 5365 will refuse this as it does not have this reg */
209 return robo_read16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS
) != val16
;
212 static bool robo_gmii(void)
214 if (mdio_read(0, ROBO_MII_STAT
) & 0x0100)
215 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
219 static int robo_switch_enable(void)
221 unsigned int i
, last_port
;
223 #ifdef CONFIG_BCM47XX
227 val
= robo_read16(ROBO_CTRL_PAGE
, ROBO_SWITCH_MODE
);
228 if (!(val
& (1 << 1))) {
231 /* With forwarding */
233 robo_write16(ROBO_CTRL_PAGE
, ROBO_SWITCH_MODE
, val
);
234 val
= robo_read16(ROBO_CTRL_PAGE
, ROBO_SWITCH_MODE
);
235 if (!(val
& (1 << 1))) {
236 printk(KERN_ERR PFX
"Failed to enable switch\n");
240 /* No spanning tree for unmanaged mode */
241 last_port
= (robo
.devid
== ROBO_DEVICE_ID_5398
) ?
242 ROBO_PORT7_CTRL
: ROBO_PORT4_CTRL
;
243 for (i
= ROBO_PORT0_CTRL
; i
<= last_port
; i
++)
244 robo_write16(ROBO_CTRL_PAGE
, i
, 0);
246 /* No spanning tree on IMP port too */
247 robo_write16(ROBO_CTRL_PAGE
, ROBO_IM_PORT_CTRL
, 0);
250 #ifdef CONFIG_BCM47XX
251 /* WAN port LED, except for Netgear WGT634U */
252 if (bcm47xx_nvram_getenv("nvram_type", buf
, sizeof(buf
)) >= 0) {
253 if (strcmp(buf
, "cfe") != 0)
254 robo_write16(ROBO_CTRL_PAGE
, 0x16, 0x1F);
260 static void robo_switch_reset(void)
262 if ((robo
.devid
== ROBO_DEVICE_ID_5395
) ||
263 (robo
.devid
== ROBO_DEVICE_ID_5397
) ||
264 (robo
.devid
== ROBO_DEVICE_ID_5398
)) {
265 /* Trigger a software reset. */
266 robo_write16(ROBO_CTRL_PAGE
, 0x79, 0x83);
268 robo_write16(ROBO_CTRL_PAGE
, 0x79, 0);
272 #ifdef CONFIG_BCM47XX
273 static int get_gpio_pin(const char *name
)
279 for (i
= 0; i
< 16; i
++) {
280 err
= snprintf(nvram_var
, sizeof(nvram_var
), "gpio%i", i
);
283 err
= bcm47xx_nvram_getenv(nvram_var
, buf
, sizeof(buf
));
286 if (!strcmp(name
, buf
))
293 static int robo_probe(char *devname
)
298 struct mii_ioctl_data
*mii
;
300 printk(KERN_INFO PFX
"Probing device '%s'\n", devname
);
301 strcpy(robo
.ifr
.ifr_name
, devname
);
303 if ((robo
.dev
= dev_get_by_name(&init_net
, devname
)) == NULL
) {
304 printk(KERN_ERR PFX
"No such device\n");
308 if (!robo
.dev
->netdev_ops
|| !robo
.dev
->netdev_ops
->ndo_do_ioctl
) {
309 printk(KERN_ERR PFX
"ndo_do_ioctl not implemented in ethernet driver\n");
314 robo
.device
= devname
;
316 /* try access using MII ioctls - get phy address */
317 err
= do_ioctl(SIOCGMIIPHY
);
319 printk(KERN_ERR PFX
"error (%i) while accessing MII phy registers with ioctls\n", err
);
323 /* got phy address check for robo address */
324 mii
= if_mii(&robo
.ifr
);
325 if ((mii
->phy_id
!= ROBO_PHY_ADDR
) &&
326 (mii
->phy_id
!= ROBO_PHY_ADDR_BCM63XX
) &&
327 (mii
->phy_id
!= ROBO_PHY_ADDR_TG3
)) {
328 printk(KERN_ERR PFX
"Invalid phy address (%d)\n", mii
->phy_id
);
333 #ifdef CONFIG_BCM47XX
334 robo
.gpio_lanports_enable
= get_gpio_pin("lanports_enable");
335 if (robo
.gpio_lanports_enable
>= 0) {
336 err
= gpio_request(robo
.gpio_lanports_enable
, "lanports_enable");
338 printk(KERN_ERR PFX
"error (%i) requesting lanports_enable gpio (%i)\n",
339 err
, robo
.gpio_lanports_enable
);
342 gpio_direction_output(robo
.gpio_lanports_enable
, 1);
346 robo
.gpio_robo_reset
= get_gpio_pin("robo_reset");
347 if (robo
.gpio_robo_reset
>= 0) {
348 err
= gpio_request(robo
.gpio_robo_reset
, "robo_reset");
350 printk(KERN_ERR PFX
"error (%i) requesting robo_reset gpio (%i)\n",
351 err
, robo
.gpio_robo_reset
);
354 gpio_set_value(robo
.gpio_robo_reset
, 0);
355 gpio_direction_output(robo
.gpio_robo_reset
, 1);
356 gpio_set_value(robo
.gpio_robo_reset
, 0);
359 gpio_set_value(robo
.gpio_robo_reset
, 1);
362 // TODO: reset the internal robo switch
366 phyid
= mdio_read(ROBO_PHY_ADDR
, 0x2) |
367 (mdio_read(ROBO_PHY_ADDR
, 0x3) << 16);
369 if (phyid
== 0xffffffff || phyid
== 0x55210022) {
370 printk(KERN_ERR PFX
"No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid
);
372 goto err_gpio_lanports
;
375 /* Get the device ID */
376 for (i
= 0; i
< 10; i
++) {
377 robo
.devid
= robo_read16(ROBO_MGMT_PAGE
, ROBO_DEVICE_ID
);
383 robo
.devid
= ROBO_DEVICE_ID_5325
; /* Fake it */
384 if (robo
.devid
== ROBO_DEVICE_ID_5325
)
385 robo
.is_5365
= robo_bcm5365();
387 robo
.is_5365
= false;
389 robo
.gmii
= robo_gmii();
390 if (robo
.devid
== ROBO_DEVICE_ID_5325
) {
391 for (i
= 0; i
< 5; i
++)
394 for (i
= 0; i
< 8; i
++)
397 robo
.port
[i
] = ROBO_IM_PORT_CTRL
;
400 err
= robo_switch_enable();
402 goto err_gpio_lanports
;
404 printk(KERN_INFO PFX
"found a 5%s%x!%s at %s\n", robo
.devid
& 0xff00 ? "" : "3", robo
.devid
,
405 robo
.is_5365
? " It's a BCM5365." : "", devname
);
410 if (robo
.gpio_lanports_enable
>= 0)
411 gpio_free(robo
.gpio_lanports_enable
);
413 if (robo
.gpio_robo_reset
>= 0)
414 gpio_free(robo
.gpio_robo_reset
);
423 static int handle_vlan_port_read(void *driver
, char *buf
, int nr
)
429 val16
= (nr
) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
432 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS_5365
, val16
);
434 val16
= robo_read16(ROBO_VLAN_PAGE
, ROBO_VLAN_READ
);
435 if ((val16
& (1 << 14)) /* valid */) {
436 for (j
= 0; j
< 6; j
++) {
437 if (val16
& (1 << j
)) {
438 len
+= sprintf(buf
+ len
, "%d", j
);
439 if (val16
& (1 << (j
+ 7))) {
444 if (robo_read16(ROBO_VLAN_PAGE
, ROBO_VLAN_PORT0_DEF_TAG
+ (j
<< 1)) == nr
)
450 len
+= sprintf(buf
+ len
, "\n");
454 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS
, val16
);
456 val32
= robo_read32(ROBO_VLAN_PAGE
, ROBO_VLAN_READ
);
457 if ((val32
& (1 << 20)) /* valid */) {
458 for (j
= 0; j
< 6; j
++) {
459 if (val32
& (1 << j
)) {
460 len
+= sprintf(buf
+ len
, "%d", j
);
461 if (val32
& (1 << (j
+ 6))) {
466 if (robo_read16(ROBO_VLAN_PAGE
, ROBO_VLAN_PORT0_DEF_TAG
+ (j
<< 1)) == nr
)
472 len
+= sprintf(buf
+ len
, "\n");
481 static int handle_vlan_port_write(void *driver
, char *buf
, int nr
)
483 switch_driver
*d
= (switch_driver
*) driver
;
484 switch_vlan_config
*c
= switch_parse_vlan(d
, buf
);
491 for (j
= 0; j
< d
->ports
; j
++) {
492 if ((c
->untag
| c
->pvid
) & (1 << j
))
493 /* change default vlan tag */
494 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_PORT0_DEF_TAG
+ (j
<< 1), nr
);
497 /* write config now */
499 if (robo
.devid
!= ROBO_DEVICE_ID_5325
) {
500 __u8 regoff
= ((robo
.devid
== ROBO_DEVICE_ID_5395
) ||
501 (robo
.devid
== ROBO_DEVICE_ID_53115
)) ? 0x20 : 0;
503 robo_write32(ROBO_ARLIO_PAGE
, 0x63 + regoff
, (c
->untag
<< 9) | c
->port
);
504 robo_write16(ROBO_ARLIO_PAGE
, 0x61 + regoff
, nr
);
505 robo_write16(ROBO_ARLIO_PAGE
, 0x60 + regoff
, 1 << 7);
510 val16
= (nr
) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
512 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_WRITE_5365
,
513 (1 << 14) /* valid */ | (c
->untag
<< 7) | c
->port
);
514 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS_5365
, val16
);
516 robo_write32(ROBO_VLAN_PAGE
, ROBO_VLAN_WRITE
,
517 (1 << 20) /* valid */ | (c
->untag
<< 6) | c
->port
);
518 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_TABLE_ACCESS
, val16
);
525 #define set_switch(state) \
526 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
528 static int handle_enable_read(void *driver
, char *buf
, int nr
)
530 return sprintf(buf
, "%d\n", (((robo_read16(ROBO_CTRL_PAGE
, ROBO_SWITCH_MODE
) & 2) == 2) ? 1 : 0));
533 static int handle_enable_write(void *driver
, char *buf
, int nr
)
535 set_switch(buf
[0] == '1');
540 static int handle_port_enable_read(void *driver
, char *buf
, int nr
)
542 return sprintf(buf
, "%d\n", ((robo_read16(ROBO_CTRL_PAGE
, robo
.port
[nr
]) & 3) == 3 ? 0 : 1));
545 static int handle_port_enable_write(void *driver
, char *buf
, int nr
)
550 val16
= 3; /* disabled */
551 else if (buf
[0] == '1')
552 val16
= 0; /* enabled */
556 robo_write16(ROBO_CTRL_PAGE
, robo
.port
[nr
],
557 (robo_read16(ROBO_CTRL_PAGE
, robo
.port
[nr
]) & ~3) | val16
);
562 static int handle_port_media_read(void *driver
, char *buf
, int nr
)
564 u16 bmcr
= mdio_read(robo
.port
[nr
], MII_BMCR
);
567 if (bmcr
& BMCR_ANENABLE
)
568 media
= SWITCH_MEDIA_AUTO
;
570 if (bmcr
& BMCR_SPEED1000
)
571 media
= SWITCH_MEDIA_1000
;
572 else if (bmcr
& BMCR_SPEED100
)
573 media
= SWITCH_MEDIA_100
;
577 if (bmcr
& BMCR_FULLDPLX
)
578 media
|= SWITCH_MEDIA_FD
;
581 len
= switch_print_media(buf
, media
);
582 return len
+ sprintf(buf
+ len
, "\n");
585 static int handle_port_media_write(void *driver
, char *buf
, int nr
)
587 int media
= switch_parse_media(buf
);
590 if (media
& SWITCH_MEDIA_AUTO
)
591 bmcr
= BMCR_ANENABLE
| BMCR_ANRESTART
;
593 if (media
& SWITCH_MEDIA_1000
) {
596 bmcr
= BMCR_SPEED1000
;
598 else if (media
& SWITCH_MEDIA_100
)
599 bmcr
= BMCR_SPEED100
;
603 if (media
& SWITCH_MEDIA_FD
)
604 bmcr
|= BMCR_FULLDPLX
;
607 bmcr_mask
= ~(BMCR_SPEED1000
| BMCR_SPEED100
| BMCR_FULLDPLX
| BMCR_ANENABLE
| BMCR_ANRESTART
);
608 mdio_write(robo
.port
[nr
], MII_BMCR
,
609 (mdio_read(robo
.port
[nr
], MII_BMCR
) & bmcr_mask
) | bmcr
);
614 static int handle_enable_vlan_read(void *driver
, char *buf
, int nr
)
616 return sprintf(buf
, "%d\n", (((robo_read16(ROBO_VLAN_PAGE
, ROBO_VLAN_CTRL0
) & (1 << 7)) == (1 << 7)) ? 1 : 0));
619 static int handle_enable_vlan_write(void *driver
, char *buf
, int nr
)
621 int disable
= ((buf
[0] != '1') ? 1 : 0);
623 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_CTRL0
, disable
? 0 :
624 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
625 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_CTRL1
, disable
? 0 :
626 (robo
.devid
== ROBO_DEVICE_ID_5325
? (1 << 1) :
627 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
629 if (robo
.devid
!= ROBO_DEVICE_ID_5325
)
632 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_CTRL4
, disable
? 0 :
633 (1 << 6) /* drop invalid VID frames */);
634 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_CTRL5
, disable
? 0 :
635 (1 << 3) /* drop miss V table frames */);
640 static int handle_reset(void *driver
, char *buf
, int nr
)
642 switch_driver
*d
= (switch_driver
*) driver
;
646 /* disable switching */
650 for (j
= 0; j
<= ((robo
.is_5365
) ? VLAN_ID_MAX_5365
: VLAN_ID_MAX
); j
++) {
651 /* write config now */
652 val16
= (j
) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
654 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_WRITE_5365
, 0);
656 robo_write32(ROBO_VLAN_PAGE
, ROBO_VLAN_WRITE
, 0);
657 robo_write16(ROBO_VLAN_PAGE
, robo
.is_5365
? ROBO_VLAN_TABLE_ACCESS_5365
:
658 ROBO_VLAN_TABLE_ACCESS
,
662 /* reset ports to a known good state */
663 for (j
= 0; j
< d
->ports
; j
++) {
664 robo_write16(ROBO_CTRL_PAGE
, robo
.port
[j
], 0x0000);
665 robo_write16(ROBO_VLAN_PAGE
, ROBO_VLAN_PORT0_DEF_TAG
+ (j
<< 1), 0);
668 /* enable switching */
672 handle_enable_vlan_write(driver
, "1", 0);
677 static int __init
robo_init(void)
682 device
= strdup("ethX");
683 for (device
[3] = '0'; (device
[3] <= '3') && notfound
; device
[3]++) {
684 if (! switch_device_registered (device
))
685 notfound
= robo_probe(device
);
693 static const switch_config cfg
[] = {
696 .read
= handle_enable_read
,
697 .write
= handle_enable_write
699 .name
= "enable_vlan",
700 .read
= handle_enable_vlan_read
,
701 .write
= handle_enable_vlan_write
705 .write
= handle_reset
708 static const switch_config port
[] = {
711 .read
= handle_port_enable_read
,
712 .write
= handle_port_enable_write
715 .read
= handle_port_media_read
,
716 .write
= handle_port_media_write
719 static const switch_config vlan
[] = {
722 .read
= handle_vlan_port_read
,
723 .write
= handle_vlan_port_write
726 switch_driver driver
= {
728 .version
= DRIVER_VERSION
,
733 .driver_handlers
= cfg
,
734 .port_handlers
= port
,
735 .vlan_handlers
= vlan
,
737 if (robo
.devid
!= ROBO_DEVICE_ID_5325
) {
742 return switch_register_driver(&driver
);
746 static void __exit
robo_exit(void)
748 switch_unregister_driver(DRIVER_NAME
);
751 if (robo
.gpio_robo_reset
>= 0)
752 gpio_free(robo
.gpio_robo_reset
);
753 if (robo
.gpio_lanports_enable
>= 0)
754 gpio_free(robo
.gpio_lanports_enable
);
759 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
760 MODULE_LICENSE("GPL");
762 module_init(robo_init
);
763 module_exit(robo_exit
);