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[openwrt/svn-archive/archive.git] / package / kernel / 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 * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
7 * Based on 'robocfg' by Oleg I. Vdovikin
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 * 02110-1301, USA.
23 */
24
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/if.h>
28 #include <linux/if_arp.h>
29 #include <linux/sockios.h>
30 #include <linux/ethtool.h>
31 #include <linux/mii.h>
32 #include <linux/delay.h>
33 #include <linux/gpio.h>
34 #include <asm/uaccess.h>
35
36 #include "switch-core.h"
37 #include "etc53xx.h"
38
39 #ifdef CONFIG_BCM47XX
40 #include <bcm47xx_nvram.h>
41 #endif
42
43 #define DRIVER_NAME "bcm53xx"
44 #define DRIVER_VERSION "0.03"
45 #define PFX "roboswitch: "
46
47 #define ROBO_PHY_ADDR 0x1E /* robo switch phy address */
48 #define ROBO_PHY_ADDR_TG3 0x01 /* Tigon3 PHY address */
49 #define ROBO_PHY_ADDR_BCM63XX 0x00 /* BCM63XX PHY address */
50
51 /* MII registers */
52 #define REG_MII_PAGE 0x10 /* MII Page register */
53 #define REG_MII_ADDR 0x11 /* MII Address register */
54 #define REG_MII_DATA0 0x18 /* MII Data register 0 */
55
56 #define REG_MII_PAGE_ENABLE 1
57 #define REG_MII_ADDR_WRITE 1
58 #define REG_MII_ADDR_READ 2
59
60 /* Robo device ID register (in ROBO_MGMT_PAGE) */
61 #define ROBO_DEVICE_ID 0x30
62 #define ROBO_DEVICE_ID_5325 0x25 /* Faked */
63 #define ROBO_DEVICE_ID_5395 0x95
64 #define ROBO_DEVICE_ID_5397 0x97
65 #define ROBO_DEVICE_ID_5398 0x98
66 #define ROBO_DEVICE_ID_53115 0x3115
67 #define ROBO_DEVICE_ID_53125 0x3125
68
69 /* Private et.o ioctls */
70 #define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
71 #define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
72
73 /* Data structure for a Roboswitch device. */
74 struct robo_switch {
75 char *device; /* The device name string (ethX) */
76 u16 devid; /* ROBO_DEVICE_ID_53xx */
77 bool is_5365;
78 bool gmii; /* gigabit mii */
79 u8 corerev;
80 int gpio_robo_reset;
81 int gpio_lanports_enable;
82 struct ifreq ifr;
83 struct net_device *dev;
84 unsigned char port[9];
85 };
86
87 /* Currently we can only have one device in the system. */
88 static struct robo_switch robo;
89
90
91 static int do_ioctl(int cmd)
92 {
93 mm_segment_t old_fs = get_fs();
94 int ret;
95
96 set_fs(KERNEL_DS);
97 ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
98 set_fs(old_fs);
99
100 return ret;
101 }
102
103 static u16 mdio_read(__u16 phy_id, __u8 reg)
104 {
105 struct mii_ioctl_data *mii = if_mii(&robo.ifr);
106 int err;
107
108 mii->phy_id = phy_id;
109 mii->reg_num = reg;
110
111 err = do_ioctl(SIOCGMIIREG);
112 if (err < 0) {
113 printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);
114
115 return 0xffff;
116 }
117
118 return mii->val_out;
119 }
120
121 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
122 {
123 struct mii_ioctl_data *mii = if_mii(&robo.ifr);
124 int err;
125
126 mii->phy_id = phy_id;
127 mii->reg_num = reg;
128 mii->val_in = val;
129
130 err = do_ioctl(SIOCSMIIREG);
131 if (err < 0) {
132 printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
133 return;
134 }
135 }
136
137 static int robo_reg(__u8 page, __u8 reg, __u8 op)
138 {
139 int i = 3;
140
141 /* set page number */
142 mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
143 (page << 8) | REG_MII_PAGE_ENABLE);
144
145 /* set register address */
146 mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
147 (reg << 8) | op);
148
149 /* check if operation completed */
150 while (i--) {
151 if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
152 return 0;
153 }
154
155 printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);
156
157 return 1;
158 }
159
160 /*
161 static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
162 {
163 int i;
164
165 robo_reg(page, reg, REG_MII_ADDR_READ);
166
167 for (i = 0; i < count; i++)
168 val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
169 }
170 */
171
172 static __u16 robo_read16(__u8 page, __u8 reg)
173 {
174 robo_reg(page, reg, REG_MII_ADDR_READ);
175
176 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
177 }
178
179 static __u32 robo_read32(__u8 page, __u8 reg)
180 {
181 robo_reg(page, reg, REG_MII_ADDR_READ);
182
183 return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
184 (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
185 }
186
187 static void robo_write16(__u8 page, __u8 reg, __u16 val16)
188 {
189 /* write data */
190 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);
191
192 robo_reg(page, reg, REG_MII_ADDR_WRITE);
193 }
194
195 static void robo_write32(__u8 page, __u8 reg, __u32 val32)
196 {
197 /* write data */
198 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
199 mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);
200
201 robo_reg(page, reg, REG_MII_ADDR_WRITE);
202 }
203
204 /* checks that attached switch is 5365 */
205 static bool robo_bcm5365(void)
206 {
207 /* set vlan access id to 15 and read it back */
208 __u16 val16 = 15;
209 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
210
211 /* 5365 will refuse this as it does not have this reg */
212 return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
213 }
214
215 static bool robo_gmii(void)
216 {
217 if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
218 return ((mdio_read(0, 0x0f) & 0xf000) != 0);
219 return false;
220 }
221
222 static int robo_switch_enable(void)
223 {
224 unsigned int i, last_port;
225 u16 val;
226 #ifdef CONFIG_BCM47XX
227 char buf[20];
228 #endif
229
230 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
231 if (!(val & (1 << 1))) {
232 /* Unmanaged mode */
233 val &= ~(1 << 0);
234 /* With forwarding */
235 val |= (1 << 1);
236 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
237 val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
238 if (!(val & (1 << 1))) {
239 printk(KERN_ERR PFX "Failed to enable switch\n");
240 return -EBUSY;
241 }
242
243 /* No spanning tree for unmanaged mode */
244 last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
245 ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
246 for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
247 robo_write16(ROBO_CTRL_PAGE, i, 0);
248
249 /* No spanning tree on IMP port too */
250 robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
251 }
252
253 if (robo.devid == ROBO_DEVICE_ID_53125) {
254 /* Make IM port status link by default */
255 val = robo_read16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL) | 0xb1;
256 robo_write16(ROBO_CTRL_PAGE, ROBO_PORT_OVERRIDE_CTRL, val);
257 // TODO: init EEE feature
258 }
259
260 #ifdef CONFIG_BCM47XX
261 /* WAN port LED, except for Netgear WGT634U */
262 if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
263 if (strcmp(buf, "cfe") != 0)
264 robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
265 }
266 #endif
267 return 0;
268 }
269
270 static void robo_switch_reset(void)
271 {
272 if ((robo.devid == ROBO_DEVICE_ID_5395) ||
273 (robo.devid == ROBO_DEVICE_ID_5397) ||
274 (robo.devid == ROBO_DEVICE_ID_5398)) {
275 /* Trigger a software reset. */
276 robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
277 mdelay(500);
278 robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
279 }
280 }
281
282 #ifdef CONFIG_BCM47XX
283 static int get_gpio_pin(const char *name)
284 {
285 int i, err;
286 char nvram_var[10];
287 char buf[30];
288
289 for (i = 0; i < 16; i++) {
290 err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
291 if (err <= 0)
292 continue;
293 err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
294 if (err <= 0)
295 continue;
296 if (!strcmp(name, buf))
297 return i;
298 }
299 return -1;
300 }
301 #endif
302
303 static int robo_probe(char *devname)
304 {
305 __u32 phyid;
306 unsigned int i;
307 int err = -1;
308 struct mii_ioctl_data *mii;
309
310 printk(KERN_INFO PFX "Probing device '%s'\n", devname);
311 strcpy(robo.ifr.ifr_name, devname);
312
313 if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
314 printk(KERN_ERR PFX "No such device\n");
315 err = -ENODEV;
316 goto err_done;
317 }
318 if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
319 printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
320 err = -ENXIO;
321 goto err_put;
322 }
323
324 robo.device = devname;
325
326 /* try access using MII ioctls - get phy address */
327 err = do_ioctl(SIOCGMIIPHY);
328 if (err < 0) {
329 printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
330 goto err_put;
331 }
332
333 /* got phy address check for robo address */
334 mii = if_mii(&robo.ifr);
335 if ((mii->phy_id != ROBO_PHY_ADDR) &&
336 (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
337 (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
338 printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
339 err = -ENODEV;
340 goto err_put;
341 }
342
343 #ifdef CONFIG_BCM47XX
344 robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
345 if (robo.gpio_lanports_enable >= 0) {
346 err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
347 if (err) {
348 printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
349 err, robo.gpio_lanports_enable);
350 goto err_put;
351 }
352 gpio_direction_output(robo.gpio_lanports_enable, 1);
353 mdelay(5);
354 }
355
356 robo.gpio_robo_reset = get_gpio_pin("robo_reset");
357 if (robo.gpio_robo_reset >= 0) {
358 err = gpio_request(robo.gpio_robo_reset, "robo_reset");
359 if (err) {
360 printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
361 err, robo.gpio_robo_reset);
362 goto err_gpio_robo;
363 }
364 gpio_set_value(robo.gpio_robo_reset, 0);
365 gpio_direction_output(robo.gpio_robo_reset, 1);
366 gpio_set_value(robo.gpio_robo_reset, 0);
367 mdelay(50);
368
369 gpio_set_value(robo.gpio_robo_reset, 1);
370 mdelay(20);
371 } else {
372 // TODO: reset the internal robo switch
373 }
374 #endif
375
376 phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
377 (mdio_read(ROBO_PHY_ADDR, 0x3) << 16);
378
379 if (phyid == 0xffffffff || phyid == 0x55210022) {
380 printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
381 err = -ENODEV;
382 goto err_gpio_lanports;
383 }
384
385 /* Get the device ID */
386 for (i = 0; i < 10; i++) {
387 robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
388 if (robo.devid)
389 break;
390 udelay(10);
391 }
392 if (!robo.devid)
393 robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
394 if (robo.devid == ROBO_DEVICE_ID_5325)
395 robo.is_5365 = robo_bcm5365();
396 else
397 robo.is_5365 = false;
398
399 robo.gmii = robo_gmii();
400 if (robo.devid == ROBO_DEVICE_ID_5325) {
401 for (i = 0; i < 5; i++)
402 robo.port[i] = i;
403 } else {
404 for (i = 0; i < 8; i++)
405 robo.port[i] = i;
406 }
407 robo.port[i] = ROBO_IM_PORT_CTRL;
408
409 robo_switch_reset();
410 err = robo_switch_enable();
411 if (err)
412 goto err_gpio_lanports;
413
414 printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
415 robo.is_5365 ? " It's a BCM5365." : "", devname);
416
417 return 0;
418
419 err_gpio_lanports:
420 if (robo.gpio_lanports_enable >= 0)
421 gpio_free(robo.gpio_lanports_enable);
422 err_gpio_robo:
423 if (robo.gpio_robo_reset >= 0)
424 gpio_free(robo.gpio_robo_reset);
425 err_put:
426 dev_put(robo.dev);
427 robo.dev = NULL;
428 err_done:
429 return err;
430 }
431
432 static int handle_vlan_port_read_old(switch_driver *d, char *buf, int nr)
433 {
434 __u16 val16;
435 int len = 0;
436 int j;
437
438 val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
439
440 if (robo.is_5365) {
441 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
442 /* actual read */
443 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
444 if ((val16 & (1 << 14)) /* valid */) {
445 for (j = 0; j < d->ports; j++) {
446 if (val16 & (1 << j)) {
447 len += sprintf(buf + len, "%d", j);
448 if (val16 & (1 << (j + 7))) {
449 if (j == d->cpuport)
450 buf[len++] = 'u';
451 } else {
452 buf[len++] = 't';
453 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
454 buf[len++] = '*';
455 }
456 buf[len++] = '\t';
457 }
458 }
459 len += sprintf(buf + len, "\n");
460 }
461 } else {
462 u32 val32;
463 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
464 /* actual read */
465 val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
466 if ((val32 & (1 << 20)) /* valid */) {
467 for (j = 0; j < d->ports; j++) {
468 if (val32 & (1 << j)) {
469 len += sprintf(buf + len, "%d", j);
470 if (val32 & (1 << (j + d->ports))) {
471 if (j == d->cpuport)
472 buf[len++] = 'u';
473 } else {
474 buf[len++] = 't';
475 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
476 buf[len++] = '*';
477 }
478 buf[len++] = '\t';
479 }
480 }
481 len += sprintf(buf + len, "\n");
482 }
483 }
484
485 buf[len] = '\0';
486
487 return len;
488 }
489
490 static int handle_vlan_port_read_new(switch_driver *d, char *buf, int nr)
491 {
492 __u8 vtbl_entry, vtbl_index, vtbl_access;
493 __u32 val32;
494 int len = 0;
495 int j;
496
497 if ((robo.devid == ROBO_DEVICE_ID_5395) ||
498 (robo.devid == ROBO_DEVICE_ID_53115) ||
499 (robo.devid == ROBO_DEVICE_ID_53125)) {
500 vtbl_access = ROBO_VTBL_ACCESS_5395;
501 vtbl_index = ROBO_VTBL_INDX_5395;
502 vtbl_entry = ROBO_VTBL_ENTRY_5395;
503 } else {
504 vtbl_access = ROBO_VTBL_ACCESS;
505 vtbl_index = ROBO_VTBL_INDX;
506 vtbl_entry = ROBO_VTBL_ENTRY;
507 }
508
509 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
510 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, (1 << 7) | (1 << 0));
511 val32 = robo_read32(ROBO_ARLIO_PAGE, vtbl_entry);
512 for (j = 0; j < d->ports; j++) {
513 if (val32 & (1 << j)) {
514 len += sprintf(buf + len, "%d", j);
515 if (val32 & (1 << (j + d->ports))) {
516 if (j == d->cpuport)
517 buf[len++] = 'u';
518 } else {
519 buf[len++] = 't';
520 if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
521 buf[len++] = '*';
522 }
523 buf[len++] = '\t';
524 }
525 }
526 len += sprintf(buf + len, "\n");
527 buf[len] = '\0';
528 return len;
529 }
530
531 static int handle_vlan_port_read(void *driver, char *buf, int nr)
532 {
533 switch_driver *d = (switch_driver *) driver;
534
535 if (robo.devid != ROBO_DEVICE_ID_5325)
536 return handle_vlan_port_read_new(d, buf, nr);
537 else
538 return handle_vlan_port_read_old(d, buf, nr);
539 }
540
541 static void handle_vlan_port_write_old(switch_driver *d, switch_vlan_config *c, int nr)
542 {
543 __u16 val16;
544 __u32 val32;
545 __u32 untag = ((c->untag & ~(1 << d->cpuport)) << d->ports);
546
547 /* write config now */
548 val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
549 if (robo.is_5365) {
550 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
551 (1 << 14) /* valid */ | (untag << 1 ) | c->port);
552 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
553 } else {
554 if (robo.corerev < 3)
555 val32 = (1 << 20) | ((nr >> 4) << 12) | untag | c->port;
556 else
557 val32 = (1 << 24) | (nr << 12) | untag | c->port;
558 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, val32);
559 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
560 }
561 }
562
563 static void handle_vlan_port_write_new(switch_driver *d, switch_vlan_config *c, int nr)
564 {
565 __u8 vtbl_entry, vtbl_index, vtbl_access;
566 __u32 untag = ((c->untag & ~(1 << d->cpuport)) << d->ports);
567
568 /* write config now */
569 if ((robo.devid == ROBO_DEVICE_ID_5395) ||
570 (robo.devid == ROBO_DEVICE_ID_53115) ||
571 (robo.devid == ROBO_DEVICE_ID_53125)) {
572 vtbl_access = ROBO_VTBL_ACCESS_5395;
573 vtbl_index = ROBO_VTBL_INDX_5395;
574 vtbl_entry = ROBO_VTBL_ENTRY_5395;
575 } else {
576 vtbl_access = ROBO_VTBL_ACCESS;
577 vtbl_index = ROBO_VTBL_INDX;
578 vtbl_entry = ROBO_VTBL_ENTRY;
579 }
580
581 robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, untag | c->port);
582 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
583 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
584 }
585
586 static int handle_vlan_port_write(void *driver, char *buf, int nr)
587 {
588 switch_driver *d = (switch_driver *)driver;
589 switch_vlan_config *c = switch_parse_vlan(d, buf);
590 int j;
591
592 if (c == NULL)
593 return -EINVAL;
594
595 for (j = 0; j < d->ports; j++) {
596 if ((c->untag | c->pvid) & (1 << j)) {
597 /* change default vlan tag */
598 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
599 }
600 }
601
602 if (robo.devid != ROBO_DEVICE_ID_5325)
603 handle_vlan_port_write_new(d, c, nr);
604 else
605 handle_vlan_port_write_old(d, c, nr);
606
607 kfree(c);
608 return 0;
609 }
610
611 #define set_switch(state) \
612 robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
613
614 static int handle_enable_read(void *driver, char *buf, int nr)
615 {
616 return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
617 }
618
619 static int handle_enable_write(void *driver, char *buf, int nr)
620 {
621 set_switch(buf[0] == '1');
622
623 return 0;
624 }
625
626 static int handle_port_enable_read(void *driver, char *buf, int nr)
627 {
628 return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
629 }
630
631 static int handle_port_enable_write(void *driver, char *buf, int nr)
632 {
633 u16 val16;
634
635 if (buf[0] == '0')
636 val16 = 3; /* disabled */
637 else if (buf[0] == '1')
638 val16 = 0; /* enabled */
639 else
640 return -EINVAL;
641
642 robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
643 (robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);
644
645 return 0;
646 }
647
648 static int handle_port_media_read(void *driver, char *buf, int nr)
649 {
650 u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
651 int media, len;
652
653 if (bmcr & BMCR_ANENABLE)
654 media = SWITCH_MEDIA_AUTO;
655 else {
656 if (bmcr & BMCR_SPEED1000)
657 media = SWITCH_MEDIA_1000;
658 else if (bmcr & BMCR_SPEED100)
659 media = SWITCH_MEDIA_100;
660 else
661 media = 0;
662
663 if (bmcr & BMCR_FULLDPLX)
664 media |= SWITCH_MEDIA_FD;
665 }
666
667 len = switch_print_media(buf, media);
668 return len + sprintf(buf + len, "\n");
669 }
670
671 static int handle_port_media_write(void *driver, char *buf, int nr)
672 {
673 int media = switch_parse_media(buf);
674 u16 bmcr, bmcr_mask;
675
676 if (media & SWITCH_MEDIA_AUTO)
677 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
678 else {
679 if (media & SWITCH_MEDIA_1000) {
680 if (!robo.gmii)
681 return -EINVAL;
682 bmcr = BMCR_SPEED1000;
683 }
684 else if (media & SWITCH_MEDIA_100)
685 bmcr = BMCR_SPEED100;
686 else
687 bmcr = 0;
688
689 if (media & SWITCH_MEDIA_FD)
690 bmcr |= BMCR_FULLDPLX;
691 }
692
693 bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
694 mdio_write(robo.port[nr], MII_BMCR,
695 (mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);
696
697 return 0;
698 }
699
700 static int handle_enable_vlan_read(void *driver, char *buf, int nr)
701 {
702 return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
703 }
704
705 static int handle_enable_vlan_write(void *driver, char *buf, int nr)
706 {
707 __u16 val16;
708 int disable = ((buf[0] != '1') ? 1 : 0);
709
710 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0);
711 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
712 val16 | (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
713
714 val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1);
715 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
716 val16 | (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
717 0) | (1 << 2) | (1 << 3)); /* RSV multicast */
718
719 if (robo.devid != ROBO_DEVICE_ID_5325)
720 return 0;
721
722 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
723 (1 << 6) /* drop invalid VID frames */);
724 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
725 (1 << 3) /* drop miss V table frames */);
726
727 return 0;
728 }
729
730 static void handle_reset_old(switch_driver *d, char *buf, int nr)
731 {
732 int j;
733 __u16 val16;
734
735 /* reset vlans */
736 for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
737 /* write config now */
738 val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
739 if (robo.is_5365)
740 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
741 else
742 robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
743 robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
744 ROBO_VLAN_TABLE_ACCESS,
745 val16);
746 }
747 }
748
749 static void handle_reset_new(switch_driver *d, char *buf, int nr)
750 {
751 int j;
752 __u8 vtbl_entry, vtbl_index, vtbl_access;
753
754 if ((robo.devid == ROBO_DEVICE_ID_5395) ||
755 (robo.devid == ROBO_DEVICE_ID_53115) ||
756 (robo.devid == ROBO_DEVICE_ID_53125)) {
757 vtbl_access = ROBO_VTBL_ACCESS_5395;
758 vtbl_index = ROBO_VTBL_INDX_5395;
759 vtbl_entry = ROBO_VTBL_ENTRY_5395;
760 } else {
761 vtbl_access = ROBO_VTBL_ACCESS;
762 vtbl_index = ROBO_VTBL_INDX;
763 vtbl_entry = ROBO_VTBL_ENTRY;
764 }
765
766 for (j = 0; j <= VLAN_ID_MAX; j++) {
767 /* write config now */
768 robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, 0);
769 robo_write16(ROBO_ARLIO_PAGE, vtbl_index, j);
770 robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
771 }
772 }
773
774 static int handle_reset(void *driver, char *buf, int nr)
775 {
776 int j;
777 switch_driver *d = (switch_driver *) driver;
778
779 /* disable switching */
780 set_switch(0);
781
782 if (robo.devid != ROBO_DEVICE_ID_5325)
783 handle_reset_new(d, buf, nr);
784 else
785 handle_reset_old(d, buf, nr);
786
787 /* reset ports to a known good state */
788 for (j = 0; j < d->ports; j++) {
789 robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
790 robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
791 }
792
793 /* enable switching */
794 set_switch(1);
795
796 /* enable vlans */
797 handle_enable_vlan_write(driver, "1", 0);
798
799 return 0;
800 }
801
802 static int __init robo_init(void)
803 {
804 int notfound = 1;
805 char *device;
806
807 device = strdup("ethX");
808 for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
809 if (! switch_device_registered (device))
810 notfound = robo_probe(device);
811 }
812 device[3]--;
813
814 if (notfound) {
815 kfree(device);
816 return -ENODEV;
817 } else {
818 static const switch_config cfg[] = {
819 {
820 .name = "enable",
821 .read = handle_enable_read,
822 .write = handle_enable_write
823 }, {
824 .name = "enable_vlan",
825 .read = handle_enable_vlan_read,
826 .write = handle_enable_vlan_write
827 }, {
828 .name = "reset",
829 .read = NULL,
830 .write = handle_reset
831 }, { NULL, },
832 };
833 static const switch_config port[] = {
834 {
835 .name = "enable",
836 .read = handle_port_enable_read,
837 .write = handle_port_enable_write
838 }, {
839 .name = "media",
840 .read = handle_port_media_read,
841 .write = handle_port_media_write
842 }, { NULL, },
843 };
844 static const switch_config vlan[] = {
845 {
846 .name = "ports",
847 .read = handle_vlan_port_read,
848 .write = handle_vlan_port_write
849 }, { NULL, },
850 };
851 switch_driver driver = {
852 .name = DRIVER_NAME,
853 .version = DRIVER_VERSION,
854 .interface = device,
855 .cpuport = 5,
856 .ports = 6,
857 .vlans = 16,
858 .driver_handlers = cfg,
859 .port_handlers = port,
860 .vlan_handlers = vlan,
861 };
862 if (robo.devid != ROBO_DEVICE_ID_5325) {
863 driver.ports = 9;
864 driver.cpuport = 8;
865 }
866 if (robo.is_5365)
867 snprintf(driver.dev_name, SWITCH_NAME_BUFSZ, "BCM5365");
868 else
869 snprintf(driver.dev_name, SWITCH_NAME_BUFSZ, "BCM5%s%x", robo.devid & 0xff00 ? "" : "3", robo.devid);
870
871 return switch_register_driver(&driver);
872 }
873 }
874
875 static void __exit robo_exit(void)
876 {
877 switch_unregister_driver(DRIVER_NAME);
878 if (robo.dev)
879 dev_put(robo.dev);
880 if (robo.gpio_robo_reset >= 0)
881 gpio_free(robo.gpio_robo_reset);
882 if (robo.gpio_lanports_enable >= 0)
883 gpio_free(robo.gpio_lanports_enable);
884 kfree(robo.device);
885 }
886
887
888 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
889 MODULE_LICENSE("GPL");
890
891 module_init(robo_init);
892 module_exit(robo_exit);
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