summaryrefslogtreecommitdiff
path: root/package/switch/src/switch-robo.c
blob: 2aacc36663e93819f868dc721750704e3f43df87 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
/*
 * Broadcom BCM5325E/536x switch configuration module
 *
 * Copyright (C) 2005 Felix Fietkau <nbd@nbd.name>
 * Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
 * Based on 'robocfg' by Oleg I. Vdovikin
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/if.h>
#include <linux/if_arp.h>
#include <linux/sockios.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/uaccess.h>

#include "switch-core.h"
#include "etc53xx.h"

#ifdef CONFIG_BCM47XX
#include <bcm47xx_nvram.h>
#endif

#define DRIVER_NAME		"bcm53xx"
#define DRIVER_VERSION		"0.02"
#define PFX			"roboswitch: "

#define ROBO_PHY_ADDR		0x1E	/* robo switch phy address */
#define ROBO_PHY_ADDR_TG3	0x01	/* Tigon3 PHY address */
#define ROBO_PHY_ADDR_BCM63XX	0x00	/* BCM63XX PHY address */

/* MII registers */
#define REG_MII_PAGE	0x10	/* MII Page register */
#define REG_MII_ADDR	0x11	/* MII Address register */
#define REG_MII_DATA0	0x18	/* MII Data register 0 */

#define REG_MII_PAGE_ENABLE	1
#define REG_MII_ADDR_WRITE	1
#define REG_MII_ADDR_READ	2

/* Robo device ID register (in ROBO_MGMT_PAGE) */
#define ROBO_DEVICE_ID		0x30
#define  ROBO_DEVICE_ID_5325	0x25 /* Faked */
#define  ROBO_DEVICE_ID_5395	0x95
#define  ROBO_DEVICE_ID_5397	0x97
#define  ROBO_DEVICE_ID_5398	0x98
#define  ROBO_DEVICE_ID_53115	0x3115

/* Private et.o ioctls */
#define SIOCGETCPHYRD           (SIOCDEVPRIVATE + 9)
#define SIOCSETCPHYWR           (SIOCDEVPRIVATE + 10)

/* Data structure for a Roboswitch device. */
struct robo_switch {
	char *device;			/* The device name string (ethX) */
	u16 devid;			/* ROBO_DEVICE_ID_53xx */
	bool is_5365;
	bool gmii;			/* gigabit mii */
	u8 corerev;
	int gpio_robo_reset;
	int gpio_lanports_enable;
	struct ifreq ifr;
	struct net_device *dev;
	unsigned char port[9];
};

/* Currently we can only have one device in the system. */
static struct robo_switch robo;


static int do_ioctl(int cmd)
{
	mm_segment_t old_fs = get_fs();
	int ret;

	set_fs(KERNEL_DS);
	ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
	set_fs(old_fs);

	return ret;
}

static u16 mdio_read(__u16 phy_id, __u8 reg)
{
	struct mii_ioctl_data *mii = if_mii(&robo.ifr);
	int err;

	mii->phy_id = phy_id;
	mii->reg_num = reg;

	err = do_ioctl(SIOCGMIIREG);
	if (err < 0) {
		printk(KERN_ERR PFX "failed to read mdio reg %i with err %i.\n", reg, err);

		return 0xffff;
	}

	return mii->val_out;
}

static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
{
	struct mii_ioctl_data *mii = if_mii(&robo.ifr);
	int err;

	mii->phy_id = phy_id;
	mii->reg_num = reg;
	mii->val_in = val;

	err = do_ioctl(SIOCSMIIREG);
	if (err < 0) {
		printk(KERN_ERR PFX "failed to write mdio reg: %i with err %i.\n", reg, err);
		return;
	}
}

static int robo_reg(__u8 page, __u8 reg, __u8 op)
{
	int i = 3;

	/* set page number */
	mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE,
		(page << 8) | REG_MII_PAGE_ENABLE);

	/* set register address */
	mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR,
		(reg << 8) | op);

	/* check if operation completed */
	while (i--) {
		if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0)
			return 0;
	}

	printk(KERN_ERR PFX "timeout in robo_reg on page %i and reg %i with op %i.\n", page, reg, op);

	return 1;
}

/*
static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
{
	int i;

	robo_reg(page, reg, REG_MII_ADDR_READ);

	for (i = 0; i < count; i++)
		val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i);
}
*/

static __u16 robo_read16(__u8 page, __u8 reg)
{
	robo_reg(page, reg, REG_MII_ADDR_READ);

	return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0);
}

static __u32 robo_read32(__u8 page, __u8 reg)
{
	robo_reg(page, reg, REG_MII_ADDR_READ);

	return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) |
		(mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16);
}

static void robo_write16(__u8 page, __u8 reg, __u16 val16)
{
	/* write data */
	mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16);

	robo_reg(page, reg, REG_MII_ADDR_WRITE);
}

static void robo_write32(__u8 page, __u8 reg, __u32 val32)
{
	/* write data */
	mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 0xFFFF);
	mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16);

	robo_reg(page, reg, REG_MII_ADDR_WRITE);
}

/* checks that attached switch is 5365 */
static bool robo_bcm5365(void)
{
	/* set vlan access id to 15 and read it back */
	__u16 val16 = 15;
	robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);

	/* 5365 will refuse this as it does not have this reg */
	return robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS) != val16;
}

static bool robo_gmii(void)
{
	if (mdio_read(0, ROBO_MII_STAT) & 0x0100)
		return ((mdio_read(0, 0x0f) & 0xf000) != 0);
	return false;
}

static int robo_switch_enable(void)
{
	unsigned int i, last_port;
	u16 val;
#ifdef CONFIG_BCM47XX
	char buf[20];
#endif

	val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
	if (!(val & (1 << 1))) {
		/* Unmanaged mode */
		val &= ~(1 << 0);
		/* With forwarding */
		val |= (1 << 1);
		robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
		val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
		if (!(val & (1 << 1))) {
			printk(KERN_ERR PFX "Failed to enable switch\n");
			return -EBUSY;
		}

		/* No spanning tree for unmanaged mode */
		last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
				ROBO_PORT7_CTRL : ROBO_PORT4_CTRL;
		for (i = ROBO_PORT0_CTRL; i <= last_port; i++)
			robo_write16(ROBO_CTRL_PAGE, i, 0);

		/* No spanning tree on IMP port too */
		robo_write16(ROBO_CTRL_PAGE, ROBO_IM_PORT_CTRL, 0);
	}

#ifdef CONFIG_BCM47XX
	/* WAN port LED, except for Netgear WGT634U */
	if (bcm47xx_nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
		if (strcmp(buf, "cfe") != 0)
			robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
	}
#endif
	return 0;
}

static void robo_switch_reset(void)
{
	if ((robo.devid == ROBO_DEVICE_ID_5395) ||
	    (robo.devid == ROBO_DEVICE_ID_5397) ||
	    (robo.devid == ROBO_DEVICE_ID_5398)) {
		/* Trigger a software reset. */
		robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
		mdelay(500);
		robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
	}
}

#ifdef CONFIG_BCM47XX
static int get_gpio_pin(const char *name)
{
	int i, err;
	char nvram_var[10];
	char buf[30];

	for (i = 0; i < 16; i++) {
		err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
		if (err <= 0)
			continue;
		err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
		if (err <= 0)
			continue;
		if (!strcmp(name, buf))
			return i;
	}
	return -1;
}
#endif

static int robo_probe(char *devname)
{
	__u32 phyid;
	unsigned int i;
	int err = -1;
	struct mii_ioctl_data *mii;

	printk(KERN_INFO PFX "Probing device '%s'\n", devname);
	strcpy(robo.ifr.ifr_name, devname);

	if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
		printk(KERN_ERR PFX "No such device\n");
		err = -ENODEV;
		goto err_done;
	}
	if (!robo.dev->netdev_ops || !robo.dev->netdev_ops->ndo_do_ioctl) {
		printk(KERN_ERR PFX "ndo_do_ioctl not implemented in ethernet driver\n");
		err = -ENXIO;
		goto err_put;
	}

	robo.device = devname;

	/* try access using MII ioctls - get phy address */
	err = do_ioctl(SIOCGMIIPHY);
	if (err < 0) {
		printk(KERN_ERR PFX "error (%i) while accessing MII phy registers with ioctls\n", err);
		goto err_put;
	}

	/* got phy address check for robo address */
	mii = if_mii(&robo.ifr);
	if ((mii->phy_id != ROBO_PHY_ADDR) &&
	    (mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
	    (mii->phy_id != ROBO_PHY_ADDR_TG3)) {
		printk(KERN_ERR PFX "Invalid phy address (%d)\n", mii->phy_id);
		err = -ENODEV;
		goto err_put;
	}

#ifdef CONFIG_BCM47XX
	robo.gpio_lanports_enable = get_gpio_pin("lanports_enable");
	if (robo.gpio_lanports_enable >= 0) {
		err = gpio_request(robo.gpio_lanports_enable, "lanports_enable");
		if (err) {
			printk(KERN_ERR PFX "error (%i) requesting lanports_enable gpio (%i)\n",
			       err, robo.gpio_lanports_enable);
			goto err_put;
		}
		gpio_direction_output(robo.gpio_lanports_enable, 1);
		mdelay(5);
	}

	robo.gpio_robo_reset = get_gpio_pin("robo_reset");
	if (robo.gpio_robo_reset >= 0) {
		err = gpio_request(robo.gpio_robo_reset, "robo_reset");
		if (err) {
			printk(KERN_ERR PFX "error (%i) requesting robo_reset gpio (%i)\n",
			       err, robo.gpio_robo_reset);
			goto err_gpio_robo;
		}
		gpio_set_value(robo.gpio_robo_reset, 0);
		gpio_direction_output(robo.gpio_robo_reset, 1);
		gpio_set_value(robo.gpio_robo_reset, 0);
		mdelay(50);

		gpio_set_value(robo.gpio_robo_reset, 1);
		mdelay(20);
	} else {
		// TODO: reset the internal robo switch
	}
#endif

	phyid = mdio_read(ROBO_PHY_ADDR, 0x2) |
		(mdio_read(ROBO_PHY_ADDR, 0x3) << 16);

	if (phyid == 0xffffffff || phyid == 0x55210022) {
		printk(KERN_ERR PFX "No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
		err = -ENODEV;
		goto err_gpio_lanports;
	}

	/* Get the device ID */
	for (i = 0; i < 10; i++) {
		robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
		if (robo.devid)
			break;
		udelay(10);
	}
	if (!robo.devid)
		robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
	if (robo.devid == ROBO_DEVICE_ID_5325)
		robo.is_5365 = robo_bcm5365();
	else
		robo.is_5365 = false;

	robo.gmii = robo_gmii();
	if (robo.devid == ROBO_DEVICE_ID_5325) {
		for (i = 0; i < 5; i++)
			robo.port[i] = i;
	} else {
		for (i = 0; i < 8; i++)
			robo.port[i] = i;
	}
	robo.port[i] = ROBO_IM_PORT_CTRL;

	robo_switch_reset();
	err = robo_switch_enable();
	if (err)
		goto err_gpio_lanports;

	printk(KERN_INFO PFX "found a 5%s%x!%s at %s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
		robo.is_5365 ? " It's a BCM5365." : "", devname);

	return 0;

err_gpio_lanports:
	if (robo.gpio_lanports_enable >= 0)
		gpio_free(robo.gpio_lanports_enable);
err_gpio_robo:
	if (robo.gpio_robo_reset >= 0)
		gpio_free(robo.gpio_robo_reset);
err_put:
	dev_put(robo.dev);
	robo.dev = NULL;
err_done:
	return err;
}

static int handle_vlan_port_read_old(switch_driver *d, char *buf, int nr)
{
	__u16 val16;
	int len = 0;
	int j;

	val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;

	if (robo.is_5365) {
		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
		/* actual read */
		val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
		if ((val16 & (1 << 14)) /* valid */) {
			for (j = 0; j < d->ports; j++) {
				if (val16 & (1 << j)) {
					len += sprintf(buf + len, "%d", j);
					if (val16 & (1 << (j + 7))) {
						if (j == d->cpuport)
							buf[len++] = 'u';
					} else {
						buf[len++] = 't';
						if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
							buf[len++] = '*';
					}
					buf[len++] = '\t';
				}
			}
			len += sprintf(buf + len, "\n");
		}
	} else {
		u32 val32;
		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
		/* actual read */
		val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
		if ((val32 & (1 << 20)) /* valid */) {
			for (j = 0; j < d->ports; j++) {
				if (val32 & (1 << j)) {
					len += sprintf(buf + len, "%d", j);
					if (val32 & (1 << (j + d->ports))) {
						if (j == d->cpuport)
							buf[len++] = 'u';
					} else {
						buf[len++] = 't';
						if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
							buf[len++] = '*';
					}
					buf[len++] = '\t';
				}
			}
			len += sprintf(buf + len, "\n");
		}
	}

	buf[len] = '\0';

	return len;
}

static int handle_vlan_port_read_new(switch_driver *d, char *buf, int nr)
{
	__u8 vtbl_entry, vtbl_index, vtbl_access;
	__u32 val32;
	int len = 0;
	int j;

	if ((robo.devid == ROBO_DEVICE_ID_5395) ||
	    (robo.devid == ROBO_DEVICE_ID_53115)) {
		vtbl_access = ROBO_VTBL_ACCESS_5395;
		vtbl_index = ROBO_VTBL_INDX_5395;
		vtbl_entry = ROBO_VTBL_ENTRY_5395;
	} else {
		vtbl_access = ROBO_VTBL_ACCESS;
		vtbl_index = ROBO_VTBL_INDX;
		vtbl_entry = ROBO_VTBL_ENTRY;
	}

	robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
	robo_write16(ROBO_ARLIO_PAGE, vtbl_access, (1 << 7) | (1 << 0));
	val32 = robo_read32(ROBO_ARLIO_PAGE, vtbl_entry);
	for (j = 0; j < d->ports; j++) {
		if (val32 & (1 << j)) {
			len += sprintf(buf + len, "%d", j);
			if (val32 & (1 << (j + d->ports))) {
				if (j == d->cpuport)
					buf[len++] = 'u';
			} else {
				buf[len++] = 't';
				if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
					buf[len++] = '*';
			}
			buf[len++] = '\t';
		}
	}
	len += sprintf(buf + len, "\n");
	buf[len] = '\0';
	return len;
}

static int handle_vlan_port_read(void *driver, char *buf, int nr)
{
	switch_driver *d = (switch_driver *) driver;

	if (robo.devid != ROBO_DEVICE_ID_5325)
		return handle_vlan_port_read_new(d, buf, nr);
	else
		return handle_vlan_port_read_old(d, buf, nr);
}

static void handle_vlan_port_write_old(switch_driver *d, switch_vlan_config *c, int nr)
{
	__u16 val16;
	__u32 val32;
	__u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);

	/* write config now */
	val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
	if (robo.is_5365) {
		robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365,
			(1 << 14)  /* valid */ | (untag << 1 ) | c->port);
		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5365, val16);
	} else {
		if (robo.corerev < 3)
			val32 = (1 << 20) | ((nr >> 4) << 12) | untag | c->port;
		else
			val32 = (1 << 24) | (nr << 12) | untag | c->port;
		robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, val32);
		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
	}
}

static void handle_vlan_port_write_new(switch_driver *d, switch_vlan_config *c, int nr)
{
	__u8 vtbl_entry, vtbl_index, vtbl_access;
	__u32 untag = ((c->untag  & ~(1 << d->cpuport)) << d->ports);

	/* write config now */
	if ((robo.devid == ROBO_DEVICE_ID_5395) ||
	    (robo.devid == ROBO_DEVICE_ID_53115)) {
		vtbl_access = ROBO_VTBL_ACCESS_5395;
		vtbl_index = ROBO_VTBL_INDX_5395;
		vtbl_entry = ROBO_VTBL_ENTRY_5395;
	} else {
		vtbl_access = ROBO_VTBL_ACCESS;
		vtbl_index = ROBO_VTBL_INDX;
		vtbl_entry = ROBO_VTBL_ENTRY;
	}

	robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, untag | c->port);
	robo_write16(ROBO_ARLIO_PAGE, vtbl_index, nr);
	robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
}

static int handle_vlan_port_write(void *driver, char *buf, int nr)
{
	switch_driver *d = (switch_driver *)driver;
	switch_vlan_config *c = switch_parse_vlan(d, buf);
	int j;

	if (c == NULL)
		return -EINVAL;

	for (j = 0; j < d->ports; j++) {
		if ((c->untag | c->pvid) & (1 << j)) {
			/* change default vlan tag */
			robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
		}
	}

	if (robo.devid != ROBO_DEVICE_ID_5325)
		handle_vlan_port_write_new(d, c, nr);
	else
		handle_vlan_port_write_old(d, c, nr);

	kfree(c);
	return 0;
}

#define set_switch(state) \
	robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));

static int handle_enable_read(void *driver, char *buf, int nr)
{
	return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
}

static int handle_enable_write(void *driver, char *buf, int nr)
{
	set_switch(buf[0] == '1');

	return 0;
}

static int handle_port_enable_read(void *driver, char *buf, int nr)
{
	return sprintf(buf, "%d\n", ((robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & 3) == 3 ? 0 : 1));
}

static int handle_port_enable_write(void *driver, char *buf, int nr)
{
	u16 val16;

	if (buf[0] == '0')
		val16 = 3; /* disabled */
	else if (buf[0] == '1')
		val16 = 0; /* enabled */
	else
		return -EINVAL;

	robo_write16(ROBO_CTRL_PAGE, robo.port[nr],
		(robo_read16(ROBO_CTRL_PAGE, robo.port[nr]) & ~3) | val16);

	return 0;
}

static int handle_port_media_read(void *driver, char *buf, int nr)
{
	u16 bmcr = mdio_read(robo.port[nr], MII_BMCR);
	int media, len;

	if (bmcr & BMCR_ANENABLE)
		media = SWITCH_MEDIA_AUTO;
	else {
		if (bmcr & BMCR_SPEED1000)
			media = SWITCH_MEDIA_1000;
		else if (bmcr & BMCR_SPEED100)
			media = SWITCH_MEDIA_100;
		else
			media = 0;

		if (bmcr & BMCR_FULLDPLX)
			media |= SWITCH_MEDIA_FD;
	}

	len = switch_print_media(buf, media);
	return len + sprintf(buf + len, "\n");
}

static int handle_port_media_write(void *driver, char *buf, int nr)
{
	int media = switch_parse_media(buf);
	u16 bmcr, bmcr_mask;

	if (media & SWITCH_MEDIA_AUTO)
		bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
	else {
		if (media & SWITCH_MEDIA_1000) {
			if (!robo.gmii)
				return -EINVAL;
			bmcr = BMCR_SPEED1000;
		}
		else if (media & SWITCH_MEDIA_100)
			bmcr = BMCR_SPEED100;
		else
			bmcr = 0;

		if (media & SWITCH_MEDIA_FD)
			bmcr |= BMCR_FULLDPLX;
	}

	bmcr_mask = ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_ANRESTART);
	mdio_write(robo.port[nr], MII_BMCR,
		(mdio_read(robo.port[nr], MII_BMCR) & bmcr_mask) | bmcr);

	return 0;
}

static int handle_enable_vlan_read(void *driver, char *buf, int nr)
{
	return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
}

static int handle_enable_vlan_write(void *driver, char *buf, int nr)
{
	__u16 val16;
	int disable = ((buf[0] != '1') ? 1 : 0);

	val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0);
	robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
		val16 | (1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);

	val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1);
	robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
		val16 | (robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
		0) | (1 << 2) | (1 << 3)); /* RSV multicast */

	if (robo.devid != ROBO_DEVICE_ID_5325)
		return 0;

	robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
		(1 << 6) /* drop invalid VID frames */);
	robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
		(1 << 3) /* drop miss V table frames */);

	return 0;
}

static void handle_reset_old(switch_driver *d, char *buf, int nr)
{
	int j;
	__u16 val16;

	/* reset vlans */
	for (j = 0; j <= ((robo.is_5365) ? VLAN_ID_MAX_5365 : VLAN_ID_MAX); j++) {
		/* write config now */
		val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
		if (robo.is_5365)
			robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5365, 0);
		else
			robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
		robo_write16(ROBO_VLAN_PAGE, robo.is_5365 ? ROBO_VLAN_TABLE_ACCESS_5365 :
							    ROBO_VLAN_TABLE_ACCESS,
			     val16);
	}
}

static void handle_reset_new(switch_driver *d, char *buf, int nr)
{
	int j;
	__u8 vtbl_entry, vtbl_index, vtbl_access;

	if ((robo.devid == ROBO_DEVICE_ID_5395) ||
	    (robo.devid == ROBO_DEVICE_ID_53115)) {
		vtbl_access = ROBO_VTBL_ACCESS_5395;
		vtbl_index = ROBO_VTBL_INDX_5395;
		vtbl_entry = ROBO_VTBL_ENTRY_5395;
	} else {
		vtbl_access = ROBO_VTBL_ACCESS;
		vtbl_index = ROBO_VTBL_INDX;
		vtbl_entry = ROBO_VTBL_ENTRY;
	}

	for (j = 0; j <= VLAN_ID_MAX; j++) {
		/* write config now */
		robo_write32(ROBO_ARLIO_PAGE, vtbl_entry, 0);
		robo_write16(ROBO_ARLIO_PAGE, vtbl_index, j);
		robo_write16(ROBO_ARLIO_PAGE, vtbl_access, 1 << 7);
	}
}

static int handle_reset(void *driver, char *buf, int nr)
{
	int j;
	switch_driver *d = (switch_driver *) driver;

	/* disable switching */
	set_switch(0);

	if (robo.devid != ROBO_DEVICE_ID_5325)
		handle_reset_new(d, buf, nr);
	else
		handle_reset_old(d, buf, nr);

	/* reset ports to a known good state */
	for (j = 0; j < d->ports; j++) {
		robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
	}

	/* enable switching */
	set_switch(1);

	/* enable vlans */
	handle_enable_vlan_write(driver, "1", 0);

	return 0;
}

static int __init robo_init(void)
{
	int notfound = 1;
	char *device;

	device = strdup("ethX");
	for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
		if (! switch_device_registered (device))
			notfound = robo_probe(device);
	}
	device[3]--;

	if (notfound) {
		kfree(device);
		return -ENODEV;
	} else {
		static const switch_config cfg[] = {
			{
				.name	= "enable",
				.read	= handle_enable_read,
				.write	= handle_enable_write
			}, {
				.name	= "enable_vlan",
				.read	= handle_enable_vlan_read,
				.write	= handle_enable_vlan_write
			}, {
				.name	= "reset",
				.read	= NULL,
				.write	= handle_reset
			}, { NULL, },
		};
		static const switch_config port[] = {
			{
				.name	= "enable",
				.read	= handle_port_enable_read,
				.write	= handle_port_enable_write
			}, {
				.name	= "media",
				.read	= handle_port_media_read,
				.write	= handle_port_media_write
			}, { NULL, },
		};
		static const switch_config vlan[] = {
			{
				.name	= "ports",
				.read	= handle_vlan_port_read,
				.write	= handle_vlan_port_write
			}, { NULL, },
		};
		switch_driver driver = {
			.name			= DRIVER_NAME,
			.version		= DRIVER_VERSION,
			.interface		= device,
			.cpuport		= 5,
			.ports			= 6,
			.vlans			= 16,
			.driver_handlers	= cfg,
			.port_handlers		= port,
			.vlan_handlers		= vlan,
		};
		if (robo.devid != ROBO_DEVICE_ID_5325) {
			driver.ports = 9;
			driver.cpuport = 8;
		}

		return switch_register_driver(&driver);
	}
}

static void __exit robo_exit(void)
{
	switch_unregister_driver(DRIVER_NAME);
	if (robo.dev)
		dev_put(robo.dev);
	if (robo.gpio_robo_reset >= 0)
		gpio_free(robo.gpio_robo_reset);
	if (robo.gpio_lanports_enable >= 0)
		gpio_free(robo.gpio_lanports_enable);
	kfree(robo.device);
}


MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
MODULE_LICENSE("GPL");

module_init(robo_init);
module_exit(robo_exit);