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switch: warn if ndo_do_ioctl is not implemented in the Ethernet driver
[openwrt/staging/yousong.git] / 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 <asm/uaccess.h>
33
34 #include "switch-core.h"
35 #include "etc53xx.h"
36
37 #ifdef CONFIG_BCM47XX
38 #include <nvram.h>
39 #endif
40
41 #define DRIVER_NAME "bcm53xx"
42 #define DRIVER_VERSION "0.02"
43 #define PFX "roboswitch: "
44
45 #define ROBO_PHY_ADDR 0x1E /* robo switch phy address */
46 #define ROBO_PHY_ADDR_TG3 0x01 /* Tigon3 PHY address */
47 #define ROBO_PHY_ADDR_BCM63XX 0x00 /* BCM63XX PHY address */
48
49 /* MII registers */
50 #define REG_MII_PAGE 0x10 /* MII Page register */
51 #define REG_MII_ADDR 0x11 /* MII Address register */
52 #define REG_MII_DATA0 0x18 /* MII Data register 0 */
53
54 #define REG_MII_PAGE_ENABLE 1
55 #define REG_MII_ADDR_WRITE 1
56 #define REG_MII_ADDR_READ 2
57
58 /* Robo device ID register (in ROBO_MGMT_PAGE) */
59 #define ROBO_DEVICE_ID 0x30
60 #define ROBO_DEVICE_ID_5325 0x25 /* Faked */
61 #define ROBO_DEVICE_ID_5395 0x95
62 #define ROBO_DEVICE_ID_5397 0x97
63 #define ROBO_DEVICE_ID_5398 0x98
64 #define ROBO_DEVICE_ID_53115 0x3115
65
66 /* Private et.o ioctls */
67 #define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
68 #define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
69
70 /* Data structure for a Roboswitch device. */
71 struct robo_switch {
72 char *device; /* The device name string (ethX) */
73 u16 devid; /* ROBO_DEVICE_ID_53xx */
74 bool is_5350;
75 struct ifreq ifr;
76 struct net_device *dev;
77 unsigned char port[6];
78 };
79
80 /* Currently we can only have one device in the system. */
81 static struct robo_switch robo;
82
83
84 static int do_ioctl(int cmd)
85 {
86 mm_segment_t old_fs = get_fs();
87 int ret;
88
89 set_fs(KERNEL_DS);
90 ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
91 set_fs(old_fs);
92
93 return ret;
94 }
95
96 static u16 mdio_read(__u16 phy_id, __u8 reg)
97 {
98 struct mii_ioctl_data *mii = if_mii(&robo.ifr);
99 int err;
100
101 mii->phy_id = phy_id;
102 mii->reg_num = reg;
103
104 err = do_ioctl(SIOCGMIIREG);
105 if (err < 0) {
106 printk(KERN_ERR PFX
107 "[%s:%d] SIOCGMIIREG failed! err: %i\n", __FILE__, __LINE__, err);
108
109 return 0xffff;
110 }
111
112 return mii->val_out;
113 }
114
115 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
116 {
117 struct mii_ioctl_data *mii = if_mii(&robo.ifr);
118 int err;
119
120 mii->phy_id = phy_id;
121 mii->reg_num = reg;
122 mii->val_in = val;
123
124 err = do_ioctl(SIOCSMIIREG);
125 if (err < 0) {
126 printk(KERN_ERR PFX
127 "[%s:%d] SIOCSMIIREG failed! err: %i\n", __FILE__, __LINE__, err);
128 return;
129 }
130 }
131
132 static int robo_reg(__u8 page, __u8 reg, __u8 op)
133 {
134 int i = 3;
135
136 /* set page number */
137 mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
138 (page << 8) | REG_MII_PAGE_ENABLE);
139
140 /* set register address */
141 mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
142 (reg << 8) | op);
143
144 /* check if operation completed */
145 while (i--) {
146 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
147 return 0;
148 }
149
150 printk(KERN_ERR PFX "[%s:%d] timeout in robo_reg!\n", __FILE__, __LINE__);
151
152 return 0;
153 }
154
155 /*
156 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
157 {
158 int i;
159
160 robo_reg(page, reg, REG_MII_ADDR_READ);
161
162 for (i = 0; i < count; i++)
163 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
164 }
165 */
166
167 static __u16 robo_read16(__u8 page, __u8 reg)
168 {
169 robo_reg(page, reg, REG_MII_ADDR_READ);
170
171 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
172 }
173
174 static __u32 robo_read32(__u8 page, __u8 reg)
175 {
176 robo_reg(page, reg, REG_MII_ADDR_READ);
177
178 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) +
179 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
180 }
181
182 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
183 {
184 /* write data */
185 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
186
187 robo_reg(page, reg, REG_MII_ADDR_WRITE);
188 }
189
190 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
191 {
192 /* write data */
193 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 65535);
194 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
195
196 robo_reg(page, reg, REG_MII_ADDR_WRITE);
197 }
198
199 /* checks that attached switch is 5325E/5350 */
200 static int robo_vlan5350(void)
201 {
202 /* set vlan access id to 15 and read it back */
203 __u16 val16 = 15;
204 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
205
206 /* 5365 will refuse this as it does not have this reg */
207 return (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) == val16);
208 }
209
210 static int robo_switch_enable(void)
211 {
212 unsigned int i, last_port;
213 u16 val;
214 #ifdef CONFIG_BCM47XX
215 char buf[20];
216 #endif
217
218 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
219 if (!(val & (1 << 1))) {
220 /* Unmanaged mode */
221 val &= ~(1 << 0);
222 /* With forwarding */
223 val |= (1 << 1);
224 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
225 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
226 if (!(val & (1 << 1))) {
227 printk("Failed to enable switch\n");
228 return -EBUSY;
229 }
230
231 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
232 ROBO_PORT6_CTRL : ROBO_PORT3_CTRL;
233 for (i = ROBO_PORT0_CTRL; i < last_port + 1; i++)
234 robo_write16(ROBO_CTRL_PAGE, i, 0);
235 }
236
237 #ifdef CONFIG_BCM47XX
238 /* WAN port LED, except for Netgear WGT634U */
239 if (nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
240 if (strcmp(buf, "cfe") != 0)
241 robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
242 }
243 #endif
244 return 0;
245 }
246
247 static void robo_switch_reset(void)
248 {
249 if ((robo.devid == ROBO_DEVICE_ID_5395) ||
250 (robo.devid == ROBO_DEVICE_ID_5397) ||
251 (robo.devid == ROBO_DEVICE_ID_5398)) {
252 /* Trigger a software reset. */
253 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
254 mdelay(500);
255 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
256 }
257 }
258
259 static int robo_probe(char *devname)
260 {
261 __u32 phyid;
262 unsigned int i;
263 int err = 1;
264
265 printk(KERN_INFO PFX "Probing device %s: ", devname);
266 strcpy(robo.ifr.ifr_name, devname);
267
268 if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
269 printk("No such device\n");
270 return 1;
271 }
272 if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
273 printk("ndo_do_ioctl not implemented in ethernet driver\n");
274 return 1;
275 }
276
277 robo.device = devname;
278 for (i = 0; i < 5; i++)
279 robo.port[i] = i;
280 robo.port[5] = 8;
281
282 /* try access using MII ioctls - get phy address */
283 if (do_ioctl(SIOCGMIIPHY) < 0) {
284 printk("error while accessing MII phy registers with ioctls\n");
285 goto done;
286 }
287
288 /* got phy address check for robo address */
289 struct mii_ioctl_data *mii = if_mii(&robo.ifr);
290 if ((mii->phy_id != ROBO_PHY_ADDR) &&
291 (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
292 (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
293 printk("Invalid phy address (%d)\n", mii->phy_id);
294 goto done;
295 }
296
297 phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
298 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
299
300 if (phyid == 0xffffffff || phyid == 0x55210022) {
301 printk("No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
302 goto done;
303 }
304
305 /* Get the device ID */
306 for (i = 0; i < 10; i++) {
307 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
308 if (robo.devid)
309 break;
310 udelay(10);
311 }
312 if (!robo.devid)
313 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
314 robo.is_5350 = robo_vlan5350();
315
316 robo_switch_reset();
317 err = robo_switch_enable();
318 if (err)
319 goto done;
320 err = 0;
321
322 printk("found a 5%s%x!%s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
323 robo.is_5350 ? " It's a 5350." : "");
324
325 done:
326 if (err) {
327 dev_put(robo.dev);
328 robo.dev = NULL;
329 }
330 return err;
331 }
332
333
334 static int handle_vlan_port_read(void *driver, char *buf, int nr)
335 {
336 __u16 val16;
337 int len = 0;
338 int j;
339
340 val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
341
342 if (robo.is_5350) {
343 u32 val32;
344 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
345 /* actual read */
346 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
347 if ((val32 & (1 << 20)) /* valid */) {
348 for (j = 0; j < 6; j++) {
349 if (val32 & (1 << j)) {
350 len += sprintf(buf + len, "%d", j);
351 if (val32 & (1 << (j + 6))) {
352 if (j == 5) buf[len++] = 'u';
353 } else {
354 buf[len++] = 't';
355 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
356 buf[len++] = '*';
357 }
358 buf[len++] = '\t';
359 }
360 }
361 len += sprintf(buf + len, "\n");
362 }
363 } else {
364 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
365 /* actual read */
366 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
367 if ((val16 & (1 << 14)) /* valid */) {
368 for (j = 0; j < 6; j++) {
369 if (val16 & (1 << j)) {
370 len += sprintf(buf + len, "%d", j);
371 if (val16 & (1 << (j + 7))) {
372 if (j == 5) buf[len++] = 'u';
373 } else {
374 buf[len++] = 't';
375 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
376 buf[len++] = '*';
377 }
378 buf[len++] = '\t';
379 }
380 }
381 len += sprintf(buf + len, "\n");
382 }
383 }
384
385 buf[len] = '\0';
386
387 return len;
388 }
389
390 static int handle_vlan_port_write(void *driver, char *buf, int nr)
391 {
392 switch_driver *d = (switch_driver *) driver;
393 switch_vlan_config *c = switch_parse_vlan(d, buf);
394 int j;
395 __u16 val16;
396
397 if (c == NULL)
398 return -EINVAL;
399
400 for (j = 0; j < d->ports; j++) {
401 if ((c->untag | c->pvid) & (1 << j))
402 /* change default vlan tag */
403 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
404 }
405
406 /* write config now */
407
408 if (robo.devid != ROBO_DEVICE_ID_5325) {
409 __u8 regoff = ((robo.devid == ROBO_DEVICE_ID_5395) ||
410 (robo.devid == ROBO_DEVICE_ID_53115)) ? 0x20 : 0;
411
412 robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
413 robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
414 robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
415 kfree(c);
416 return 0;
417 }
418
419 val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
420 if (robo.is_5350) {
421 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
422 (1 << 20) /* valid */ | (c->untag << 6) | c->port);
423 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
424 } else {
425 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
426 (1 << 14) /* valid */ | (c->untag << 7) | c->port);
427 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
428 }
429
430 kfree(c);
431 return 0;
432 }
433
434 #define set_switch(state) \
435 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
436
437 static int handle_enable_read(void *driver, char *buf, int nr)
438 {
439 return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
440 }
441
442 static int handle_enable_write(void *driver, char *buf, int nr)
443 {
444 set_switch(buf[0] == '1');
445
446 return 0;
447 }
448
449 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
450 {
451 return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
452 }
453
454 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
455 {
456 int disable = ((buf[0] != '1') ? 1 : 0);
457
458 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
459 (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
460 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
461 (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
462 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
463
464 if (robo.devid != ROBO_DEVICE_ID_5325)
465 return 0;
466
467 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
468 (1 << 6) /* drop invalid VID frames */);
469 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
470 (1 << 3) /* drop miss V table frames */);
471
472 return 0;
473 }
474
475 static int handle_reset(void *driver, char *buf, int nr)
476 {
477 switch_driver *d = (switch_driver *) driver;
478 int j;
479 __u16 val16;
480
481 /* disable switching */
482 set_switch(0);
483
484 /* reset vlans */
485 for (j = 0; j <= ((robo.is_5350) ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) {
486 /* write config now */
487 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
488 if (robo.is_5350)
489 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, 0);
490 else
491 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
492 robo_write16(ROBO_VLAN_PAGE, robo.is_5350 ? ROBO_VLAN_TABLE_ACCESS_5350 :
493 ROBO_VLAN_TABLE_ACCESS,
494 val16);
495 }
496
497 /* reset ports to a known good state */
498 for (j = 0; j < d->ports; j++) {
499 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
500 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
501 }
502
503 /* enable switching */
504 set_switch(1);
505
506 /* enable vlans */
507 handle_enable_vlan_write(driver, "1", 0);
508
509 return 0;
510 }
511
512 static int __init robo_init(void)
513 {
514 int notfound = 1;
515 char *device;
516
517 device = strdup("ethX");
518 for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
519 if (! switch_device_registered (device))
520 notfound = robo_probe(device);
521 }
522 device[3]--;
523
524 if (notfound) {
525 kfree(device);
526 return -ENODEV;
527 } else {
528 static const switch_config cfg[] = {
529 {
530 .name = "enable",
531 .read = handle_enable_read,
532 .write = handle_enable_write
533 }, {
534 .name = "enable_vlan",
535 .read = handle_enable_vlan_read,
536 .write = handle_enable_vlan_write
537 }, {
538 .name = "reset",
539 .read = NULL,
540 .write = handle_reset
541 }, { NULL, },
542 };
543 static const switch_config vlan[] = {
544 {
545 .name = "ports",
546 .read = handle_vlan_port_read,
547 .write = handle_vlan_port_write
548 }, { NULL, },
549 };
550 switch_driver driver = {
551 .name = DRIVER_NAME,
552 .version = DRIVER_VERSION,
553 .interface = device,
554 .cpuport = 5,
555 .ports = 6,
556 .vlans = 16,
557 .driver_handlers = cfg,
558 .port_handlers = NULL,
559 .vlan_handlers = vlan,
560 };
561 if (robo.devid != ROBO_DEVICE_ID_5325) {
562 driver.ports = 9;
563 driver.cpuport = 8;
564 }
565
566 return switch_register_driver(&driver);
567 }
568 }
569
570 static void __exit robo_exit(void)
571 {
572 switch_unregister_driver(DRIVER_NAME);
573 if (robo.dev)
574 dev_put(robo.dev);
575 kfree(robo.device);
576 }
577
578
579 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
580 MODULE_LICENSE("GPL");
581
582 module_init(robo_init);
583 module_exit(robo_exit);
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