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[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / files / drivers / net / phy / ip175c.c
1 /*
2 * swconfig-ip175c.c: Swconfig configuration for IC+ IP175C switch
3 *
4 * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
5 * Copyright (C) 2008 Martin Mares <mj@ucw.cz>
6 * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
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
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/list.h>
23 #include <linux/skbuff.h>
24 #include <linux/mii.h>
25 #include <linux/phy.h>
26 #include <linux/delay.h>
27 #include <linux/switch.h>
28 #include <linux/device.h>
29
30 #define MAX_VLANS 16
31 #define MAX_PORTS 9
32 #undef DUMP_MII_IO
33
34 typedef struct ip175c_reg {
35 u16 p; // phy
36 u16 m; // mii
37 } reg;
38 typedef char bitnum;
39
40 #define NOTSUPPORTED {-1,-1}
41
42 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
43
44 struct ip175c_state;
45
46 /*********** CONSTANTS ***********/
47 struct register_mappings {
48 char *NAME;
49 u16 MODEL_NO; // Compare to bits 4-9 of MII register 0,3.
50 bitnum NUM_PORTS;
51 bitnum CPU_PORT;
52
53 /* The default VLAN for each port.
54 Default: 0x0001 for Ports 0,1,2,3
55 0x0002 for Ports 4,5 */
56 reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
57
58 /* These ports are tagged.
59 Default: 0x00 */
60 reg ADD_TAG_REG;
61 reg REMOVE_TAG_REG;
62 bitnum ADD_TAG_BIT[MAX_PORTS];
63 /* These ports are untagged.
64 Default: 0x00 (i.e. do not alter any VLAN tags...)
65 Maybe set to 0 if user disables VLANs. */
66 bitnum REMOVE_TAG_BIT[MAX_PORTS];
67
68 /* Port M and Port N are on the same VLAN.
69 Default: All ports on all VLANs. */
70 // Use register {29, 19+N/2}
71 reg VLAN_LOOKUP_REG;
72 // Port 5 uses register {30, 18} but same as odd bits.
73 reg VLAN_LOOKUP_REG_5; // in a different register on IP175C.
74 bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
75 bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
76
77 /* This VLAN corresponds to which ports.
78 Default: 0x2f,0x30,0x3f,0x3f... */
79 reg TAG_VLAN_MASK_REG;
80 bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
81 bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
82
83 int RESET_VAL;
84 reg RESET_REG;
85
86 reg MODE_REG;
87 int MODE_VAL;
88
89 /* General flags */
90 reg ROUTER_CONTROL_REG;
91 reg VLAN_CONTROL_REG;
92 bitnum TAG_VLAN_BIT;
93 bitnum ROUTER_EN_BIT;
94 bitnum NUMLAN_GROUPS_MAX;
95 bitnum NUMLAN_GROUPS_BIT;
96
97 reg MII_REGISTER_EN;
98 bitnum MII_REGISTER_EN_BIT;
99
100 // set to 1 for 178C, 0 for 175C.
101 bitnum SIMPLE_VLAN_REGISTERS; // 175C has two vlans per register but 178C has only one.
102
103 // Pointers to functions which manipulate hardware state
104 int (*get_flags)(struct ip175c_state *state);
105 int (*get_state)(struct ip175c_state *state);
106 int (*update_state)(struct ip175c_state *state);
107 int (*set_vlan_mode)(struct ip175c_state *state);
108 int (*reset)(struct ip175c_state *state);
109 };
110
111 static int ip175c_get_flags(struct ip175c_state *state);
112 static int ip175c_get_state(struct ip175c_state *state);
113 static int ip175c_update_state(struct ip175c_state *state);
114 static int ip175c_set_vlan_mode(struct ip175c_state *state);
115 static int ip175c_do_reset(struct ip175c_state *state);
116
117 static const struct register_mappings IP178C = {
118 .NAME = "IP178C",
119 .MODEL_NO = 0x18,
120 .VLAN_DEFAULT_TAG_REG = {
121 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
122 {30,9},{30,10},{30,11},
123 },
124
125 .ADD_TAG_REG = {30,12},
126 .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
127 .REMOVE_TAG_REG = {30,13},
128 .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
129
130 .SIMPLE_VLAN_REGISTERS = 1,
131
132 .VLAN_LOOKUP_REG = {31,0},// +N
133 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
134 .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
135 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
136
137 .TAG_VLAN_MASK_REG = {30,14}, // +N
138 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
139 .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
140
141 .RESET_VAL = 0x55AA,
142 .RESET_REG = {30,0},
143 .MODE_VAL = 0,
144 .MODE_REG = NOTSUPPORTED,
145
146 .ROUTER_CONTROL_REG = {30,30},
147 .ROUTER_EN_BIT = 11,
148 .NUMLAN_GROUPS_MAX = 8,
149 .NUMLAN_GROUPS_BIT = 8, // {0-2}
150
151 .VLAN_CONTROL_REG = {30,13},
152 .TAG_VLAN_BIT = 3,
153
154 .CPU_PORT = 8,
155 .NUM_PORTS = 9,
156
157 .MII_REGISTER_EN = NOTSUPPORTED,
158
159 .get_flags = ip175c_get_flags,
160 .get_state = ip175c_get_state,
161 .update_state = ip175c_update_state,
162 .set_vlan_mode = ip175c_set_vlan_mode,
163 .reset = ip175c_do_reset,
164 };
165
166 static const struct register_mappings IP175C = {
167 .NAME = "IP175C",
168 .MODEL_NO = 0x18,
169 .VLAN_DEFAULT_TAG_REG = {
170 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
171 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
172 },
173
174 .ADD_TAG_REG = {29,23},
175 .REMOVE_TAG_REG = {29,23},
176 .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
177 .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
178
179 .SIMPLE_VLAN_REGISTERS = 0,
180
181 .VLAN_LOOKUP_REG = {29,19},// +N/2
182 .VLAN_LOOKUP_REG_5 = {30,18},
183 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
184 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
185
186 .TAG_VLAN_MASK_REG = {30,1}, // +N/2
187 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
188 .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
189
190 .RESET_VAL = 0x175C,
191 .RESET_REG = {30,0},
192 .MODE_VAL = 0x175C,
193 .MODE_REG = {29,31},
194
195 .ROUTER_CONTROL_REG = {30,9},
196 .ROUTER_EN_BIT = 3,
197 .NUMLAN_GROUPS_MAX = 8,
198 .NUMLAN_GROUPS_BIT = 0, // {0-2}
199
200 .VLAN_CONTROL_REG = {30,9},
201 .TAG_VLAN_BIT = 7,
202
203 .NUM_PORTS = 6,
204 .CPU_PORT = 5,
205
206 .MII_REGISTER_EN = NOTSUPPORTED,
207
208 .get_flags = ip175c_get_flags,
209 .get_state = ip175c_get_state,
210 .update_state = ip175c_update_state,
211 .set_vlan_mode = ip175c_set_vlan_mode,
212 .reset = ip175c_do_reset,
213 };
214
215 static const struct register_mappings IP175A = {
216 .NAME = "IP175A",
217 .MODEL_NO = 0x05,
218 .VLAN_DEFAULT_TAG_REG = {
219 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
220 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
221 },
222
223 .ADD_TAG_REG = {0,23},
224 .REMOVE_TAG_REG = {0,23},
225 .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
226 .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
227
228 .SIMPLE_VLAN_REGISTERS = 0,
229
230 // Only programmable via EEPROM
231 .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
232 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
233 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
234 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
235
236 .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
237 .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
238 .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
239
240 .RESET_VAL = -1,
241 .RESET_REG = NOTSUPPORTED,
242 .MODE_VAL = 0,
243 .MODE_REG = NOTSUPPORTED,
244
245 .ROUTER_CONTROL_REG = NOTSUPPORTED,
246 .VLAN_CONTROL_REG = NOTSUPPORTED,
247 .TAG_VLAN_BIT = -1,
248 .ROUTER_EN_BIT = -1,
249 .NUMLAN_GROUPS_MAX = -1,
250 .NUMLAN_GROUPS_BIT = -1, // {0-2}
251
252 .NUM_PORTS = 5,
253 .CPU_PORT = 4,
254
255 .MII_REGISTER_EN = {0, 18},
256 .MII_REGISTER_EN_BIT = 7,
257
258 .get_flags = ip175c_get_flags,
259 .get_state = ip175c_get_state,
260 .update_state = ip175c_update_state,
261 .set_vlan_mode = ip175c_set_vlan_mode,
262 .reset = ip175c_do_reset,
263 };
264
265
266 static int ip175d_get_flags(struct ip175c_state *state);
267 static int ip175d_get_state(struct ip175c_state *state);
268 static int ip175d_update_state(struct ip175c_state *state);
269 static int ip175d_set_vlan_mode(struct ip175c_state *state);
270 static int ip175d_reset(struct ip175c_state *state);
271
272 static const struct register_mappings IP175D = {
273 .NAME = "IP175D",
274 .MODEL_NO = 0x18,
275
276 // The IP175D has a completely different interface, so we leave most
277 // of the registers undefined and switch to different code paths.
278
279 .VLAN_DEFAULT_TAG_REG = {
280 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
281 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
282 },
283
284 .ADD_TAG_REG = NOTSUPPORTED,
285 .REMOVE_TAG_REG = NOTSUPPORTED,
286
287 .SIMPLE_VLAN_REGISTERS = 0,
288
289 .VLAN_LOOKUP_REG = NOTSUPPORTED,
290 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
291 .TAG_VLAN_MASK_REG = NOTSUPPORTED,
292
293 .RESET_VAL = 0x175D,
294 .RESET_REG = {20,2},
295 .MODE_REG = NOTSUPPORTED,
296
297 .ROUTER_CONTROL_REG = NOTSUPPORTED,
298 .ROUTER_EN_BIT = -1,
299 .NUMLAN_GROUPS_BIT = -1,
300
301 .VLAN_CONTROL_REG = NOTSUPPORTED,
302 .TAG_VLAN_BIT = -1,
303
304 .NUM_PORTS = 6,
305 .CPU_PORT = 5,
306
307 .MII_REGISTER_EN = NOTSUPPORTED,
308
309 .get_flags = ip175d_get_flags,
310 .get_state = ip175d_get_state,
311 .update_state = ip175d_update_state,
312 .set_vlan_mode = ip175d_set_vlan_mode,
313 .reset = ip175d_reset,
314 };
315
316 struct ip175c_state {
317 struct switch_dev dev;
318 struct mii_bus *mii_bus;
319 bool registered;
320
321 int router_mode; // ROUTER_EN
322 int vlan_enabled; // TAG_VLAN_EN
323 struct port_state {
324 u16 pvid;
325 unsigned int shareports;
326 } ports[MAX_PORTS];
327 unsigned int add_tag;
328 unsigned int remove_tag;
329 int num_vlans;
330 struct vlan_state {
331 unsigned int ports;
332 unsigned int tag; // VLAN tag (IP175D only)
333 } vlans[MAX_VLANS];
334 const struct register_mappings *regs;
335 reg proc_mii; // phy/reg for the low level register access via swconfig
336
337 char buf[80];
338 };
339
340
341 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
342 {
343 int val = mdiobus_read(state->mii_bus, port, reg);
344 if (val < 0)
345 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
346 #ifdef DUMP_MII_IO
347 else
348 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
349 #endif
350 return val;
351 }
352
353 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
354 {
355 int err;
356
357 #ifdef DUMP_MII_IO
358 pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
359 #endif
360 err = mdiobus_write(state->mii_bus, port, reg, val);
361 if (err < 0)
362 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
363 return err;
364 }
365
366 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
367 {
368 int val = ip_phy_read(state, port, reg);
369 if (val < 0)
370 return 0;
371 return ip_phy_write(state, port, reg, (val & ~mask) | data);
372 }
373
374 static int getPhy(struct ip175c_state *state, reg mii)
375 {
376 if (!REG_SUPP(mii))
377 return -EFAULT;
378 return ip_phy_read(state, mii.p, mii.m);
379 }
380
381 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
382 {
383 int err;
384
385 if (!REG_SUPP(mii))
386 return -EFAULT;
387 err = ip_phy_write(state, mii.p, mii.m, value);
388 if (err < 0)
389 return err;
390 getPhy(state, mii);
391 return 0;
392 }
393
394
395 /**
396 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
397 * NOTE: these macros will return if there is an error!
398 */
399
400 #define GET_PORT_BITS(state, bits, addr, bit_lookup) \
401 do { \
402 int i, val = getPhy((state), (addr)); \
403 if (val < 0) \
404 return val; \
405 (bits) = 0; \
406 for (i = 0; i < MAX_PORTS; i++) { \
407 if ((bit_lookup)[i] == -1) continue; \
408 if (val & (1<<(bit_lookup)[i])) \
409 (bits) |= (1<<i); \
410 } \
411 } while (0)
412
413 #define SET_PORT_BITS(state, bits, addr, bit_lookup) \
414 do { \
415 int i, val = getPhy((state), (addr)); \
416 if (val < 0) \
417 return val; \
418 for (i = 0; i < MAX_PORTS; i++) { \
419 unsigned int newmask = ((bits)&(1<<i)); \
420 if ((bit_lookup)[i] == -1) continue; \
421 val &= ~(1<<(bit_lookup)[i]); \
422 val |= ((newmask>>i)<<(bit_lookup)[i]); \
423 } \
424 val = setPhy((state), (addr), val); \
425 if (val < 0) \
426 return val; \
427 } while (0)
428
429
430 static int get_model(struct ip175c_state *state)
431 {
432 int id1, id2;
433 int oui_id, model_no, rev_no, chip_no;
434
435 id1 = ip_phy_read(state, 0, 2);
436 id2 = ip_phy_read(state, 0, 3);
437 oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
438 model_no = (id2 >> 4) & 0x3f;
439 rev_no = id2 & 0xf;
440 pr_debug("IP175C: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
441
442 if (oui_id != 0x0090c3) // No other oui_id should have reached us anyway
443 return -ENODEV;
444
445 if (model_no == IP175A.MODEL_NO) {
446 state->regs = &IP175A;
447 } else if (model_no == IP175C.MODEL_NO) {
448 /*
449 * Several models share the same model_no:
450 * 178C has more PHYs, so we try whether the device responds to a read from PHY5
451 * 175D has a new chip ID register
452 * 175C has neither
453 */
454 if (ip_phy_read(state, 5, 2) == 0x0243) {
455 state->regs = &IP178C;
456 } else {
457 chip_no = ip_phy_read(state, 20, 0);
458 pr_debug("IP175C: Chip ID register reads %04x\n", chip_no);
459 if (chip_no == 0x175d) {
460 state->regs = &IP175D;
461 } else {
462 state->regs = &IP175C;
463 }
464 }
465 } else {
466 pr_warning("IP175C: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
467 return -EPERM;
468 }
469 return 0;
470 }
471
472 /*** Low-level functions for the older models ***/
473
474 /** Get only the vlan and router flags on the router **/
475 static int ip175c_get_flags(struct ip175c_state *state)
476 {
477 int val;
478
479 state->router_mode = 0;
480 state->vlan_enabled = -1; // hack
481 state->num_vlans = 0;
482
483 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
484 return 0; // not an error if it doesn't support enable vlan.
485 }
486
487 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
488 if (val < 0) {
489 return val;
490 }
491 if (state->regs->ROUTER_EN_BIT >= 0)
492 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
493
494 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
495 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
496 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
497 state->num_vlans+=1; // does not include WAN.
498 }
499
500 val = getPhy(state, state->regs->VLAN_CONTROL_REG);
501 if (val < 0) {
502 return 0;
503 }
504 if (state->regs->TAG_VLAN_BIT >= 0)
505 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
506
507 return 0;
508 }
509
510 /** Get all state variables for VLAN mappings and port-based tagging **/
511 static int ip175c_get_state(struct ip175c_state *state)
512 {
513 int i, j;
514 int ret;
515
516 ret = ip175c_get_flags(state);
517 if (ret < 0) {
518 return ret;
519 }
520
521 GET_PORT_BITS(state, state->remove_tag,
522 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
523 GET_PORT_BITS(state, state->add_tag,
524 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
525
526 if (state->vlan_enabled == -1) {
527 // not sure how to get this...
528 state->vlan_enabled = (state->remove_tag || state->add_tag);
529 }
530
531 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
532 for (j=0; j<MAX_PORTS; j++) {
533 state->ports[j].shareports = 0; // initialize them in case.
534 }
535 for (j=0; j<state->regs->NUM_PORTS; j++) {
536 reg addr;
537 const bitnum *bit_lookup = (j%2==0)?
538 state->regs->VLAN_LOOKUP_EVEN_BIT:
539 state->regs->VLAN_LOOKUP_ODD_BIT;
540 addr = state->regs->VLAN_LOOKUP_REG;
541 if (state->regs->SIMPLE_VLAN_REGISTERS) {
542 addr.m += j;
543 } else {
544 switch (j) {
545 case 0:
546 case 1:
547 break;
548 case 2:
549 case 3:
550 addr.m+=1;
551 break;
552 case 4:
553 addr.m+=2;
554 break;
555 case 5:
556 addr = state->regs->VLAN_LOOKUP_REG_5;
557 break;
558 }
559 }
560
561 if (REG_SUPP(addr)) {
562 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
563 }
564 }
565 } else {
566 for (j=0; j<MAX_PORTS; j++) {
567 state->ports[j].shareports = 0xff;
568 }
569 }
570
571 for (i=0; i<MAX_PORTS; i++) {
572 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
573 int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
574 if (val < 0) {
575 return val;
576 }
577 state->ports[i].pvid = val;
578 } else {
579 state->ports[i].pvid = 0;
580 }
581 }
582
583 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
584 for (j=0; j<MAX_VLANS; j++) {
585 reg addr = state->regs->TAG_VLAN_MASK_REG;
586 const bitnum *bit_lookup = (j%2==0)?
587 state->regs->TAG_VLAN_MASK_EVEN_BIT:
588 state->regs->TAG_VLAN_MASK_ODD_BIT;
589 if (state->regs->SIMPLE_VLAN_REGISTERS) {
590 addr.m += j;
591 } else {
592 addr.m += j/2;
593 }
594 GET_PORT_BITS(state, state->vlans[j].ports, addr, bit_lookup);
595 }
596 } else {
597 for (j=0; j<MAX_VLANS; j++) {
598 state->vlans[j].ports = 0;
599 for (i=0; i<state->regs->NUM_PORTS; i++) {
600 if ((state->ports[i].pvid == j) ||
601 (state->ports[i].pvid == 0)) {
602 state->vlans[j].ports |= (1<<i);
603 }
604 }
605 }
606 }
607
608 return 0;
609 }
610
611 /** Only set vlan and router flags in the switch **/
612 static int ip175c_set_flags(struct ip175c_state *state)
613 {
614 int val;
615
616 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
617 return 0;
618 }
619
620 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
621 if (val < 0) {
622 return val;
623 }
624 if (state->regs->ROUTER_EN_BIT >= 0) {
625 if (state->router_mode) {
626 val |= (1<<state->regs->ROUTER_EN_BIT);
627 } else {
628 val &= (~(1<<state->regs->ROUTER_EN_BIT));
629 }
630 }
631 if (state->regs->TAG_VLAN_BIT >= 0) {
632 if (state->vlan_enabled) {
633 val |= (1<<state->regs->TAG_VLAN_BIT);
634 } else {
635 val &= (~(1<<state->regs->TAG_VLAN_BIT));
636 }
637 }
638 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
639 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
640 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
641 val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
642 } else if (state->num_vlans >= 1) {
643 val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
644 }
645 }
646 return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
647 }
648
649 /** Set all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
650 static int ip175c_set_state(struct ip175c_state *state)
651 {
652 int j;
653 int i;
654 SET_PORT_BITS(state, state->add_tag,
655 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
656 SET_PORT_BITS(state, state->remove_tag,
657 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
658
659 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
660 for (j=0; j<state->regs->NUM_PORTS; j++) {
661 reg addr;
662 const bitnum *bit_lookup = (j%2==0)?
663 state->regs->VLAN_LOOKUP_EVEN_BIT:
664 state->regs->VLAN_LOOKUP_ODD_BIT;
665
666 // duplicate code -- sorry
667 addr = state->regs->VLAN_LOOKUP_REG;
668 if (state->regs->SIMPLE_VLAN_REGISTERS) {
669 addr.m += j;
670 } else {
671 switch (j) {
672 case 0:
673 case 1:
674 break;
675 case 2:
676 case 3:
677 addr.m+=1;
678 break;
679 case 4:
680 addr.m+=2;
681 break;
682 case 5:
683 addr = state->regs->VLAN_LOOKUP_REG_5;
684 break;
685 default:
686 addr.m = -1; // shouldn't get here, but...
687 break;
688 }
689 }
690 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
691 if (REG_SUPP(addr)) {
692 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
693 }
694 }
695 }
696 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
697 for (j=0; j<MAX_VLANS; j++) {
698 reg addr = state->regs->TAG_VLAN_MASK_REG;
699 const bitnum *bit_lookup = (j%2==0)?
700 state->regs->TAG_VLAN_MASK_EVEN_BIT:
701 state->regs->TAG_VLAN_MASK_ODD_BIT;
702 unsigned int vlan_mask;
703 if (state->regs->SIMPLE_VLAN_REGISTERS) {
704 addr.m += j;
705 } else {
706 addr.m += j/2;
707 }
708 vlan_mask = state->vlans[j].ports;
709 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
710 }
711 }
712
713 for (i=0; i<MAX_PORTS; i++) {
714 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
715 int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
716 state->ports[i].pvid);
717 if (err < 0) {
718 return err;
719 }
720 }
721 }
722
723 return ip175c_set_flags(state);
724 }
725
726 /**
727 * Uses only the VLAN port mask and the add tag mask to generate the other fields:
728 * which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
729 */
730 static void ip175c_correct_vlan_state(struct ip175c_state *state)
731 {
732 int i, j;
733 state->num_vlans = 0;
734 for (i=0; i<MAX_VLANS; i++) {
735 if (state->vlans[i].ports != 0) {
736 state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
737 }
738 }
739
740 for (i=0; i<state->regs->NUM_PORTS; i++) {
741 unsigned int portmask = (1<<i);
742 if (!state->vlan_enabled) {
743 // Share with everybody!
744 state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
745 continue;
746 }
747 state->ports[i].shareports = portmask;
748 for (j=0; j<MAX_VLANS; j++) {
749 if (state->vlans[j].ports & portmask)
750 state->ports[i].shareports |= state->vlans[j].ports;
751 }
752 }
753 }
754
755 static int ip175c_update_state(struct ip175c_state *state)
756 {
757 ip175c_correct_vlan_state(state);
758 return ip175c_set_state(state);
759 }
760
761 static int ip175c_set_vlan_mode(struct ip175c_state *state)
762 {
763 return ip175c_update_state(state);
764 }
765
766 static int ip175c_do_reset(struct ip175c_state *state)
767 {
768 int err;
769
770 if (REG_SUPP(state->regs->MODE_REG)) {
771 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
772 if (err < 0)
773 return err;
774 err = getPhy(state, state->regs->MODE_REG);
775 if (err < 0)
776 return err;
777 }
778
779 return 0;
780 }
781
782 /*** Low-level functions for IP175D ***/
783
784 static int ip175d_get_flags(struct ip175c_state *state)
785 {
786 // We keep the configuration of the switch cached, so get doesn't do anything
787 return 0;
788 }
789
790 static int ip175d_get_state(struct ip175c_state *state)
791 {
792 // Again, the configuration is fully cached
793 return 0;
794 }
795
796 static int ip175d_update_state(struct ip175c_state *state)
797 {
798 unsigned int filter_mask = 0;
799 unsigned int ports[16], add[16], rem[16];
800 int i, j;
801 int err = 0;
802
803 for (i = 0; i < 16; i++) {
804 ports[i] = 0;
805 add[i] = 0;
806 rem[i] = 0;
807 if (!state->vlan_enabled) {
808 err |= ip_phy_write(state, 22, 14+i, i+1); // default tags
809 ports[i] = 0x3f;
810 continue;
811 }
812 if (!state->vlans[i].tag) {
813 // Reset the filter
814 err |= ip_phy_write(state, 22, 14+i, 0); // tag
815 continue;
816 }
817 filter_mask |= 1 << i;
818 err |= ip_phy_write(state, 22, 14+i, state->vlans[i].tag);
819 ports[i] = state->vlans[i].ports;
820 for (j = 0; j < 6; j++) {
821 if (ports[i] & (1 << j)) {
822 if (state->add_tag & (1 << j))
823 add[i] |= 1 << j;
824 if (state->remove_tag & (1 << j))
825 rem[i] |= 1 << j;
826 }
827 }
828 }
829
830 // Port masks, tag adds and removals
831 for (i = 0; i < 8; i++) {
832 err |= ip_phy_write(state, 23, i, ports[2*i] | (ports[2*i+1] << 8));
833 err |= ip_phy_write(state, 23, 8+i, add[2*i] | (add[2*i+1] << 8));
834 err |= ip_phy_write(state, 23, 16+i, rem[2*i] | (rem[2*i+1] << 8));
835 }
836 err |= ip_phy_write(state, 22, 10, filter_mask);
837
838 // Default VLAN tag for each port
839 for (i = 0; i < 6; i++)
840 err |= ip_phy_write(state, 22, 4+i, state->vlans[state->ports[i].pvid].tag);
841
842 return (err ? -EIO : 0);
843 }
844
845 static int ip175d_set_vlan_mode(struct ip175c_state *state)
846 {
847 int i;
848 int err = 0;
849
850 if (state->vlan_enabled) {
851 // VLAN classification rules: tag-based VLANs, use VID to classify,
852 // drop packets that cannot be classified.
853 err |= ip_phy_write_masked(state, 22, 0, 0x3fff, 0x003f);
854
855 // Ingress rules: CFI=1 dropped, null VID is untagged, VID=1 passed,
856 // VID=0xfff discarded, admin both tagged and untagged, ingress
857 // filters enabled.
858 err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
859
860 // Egress rules: IGMP processing off, keep VLAN header off
861 err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
862 } else {
863 // VLAN classification rules: everything off & clear table
864 err |= ip_phy_write_masked(state, 22, 0, 0xbfff, 0x8000);
865
866 // Ingress and egress rules: set to defaults
867 err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
868 err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
869 }
870
871 // Reset default VLAN for each port to 0
872 for (i = 0; i < 6; i++)
873 state->ports[i].pvid = 0;
874
875 err |= ip175d_update_state(state);
876
877 return (err ? -EIO : 0);
878 }
879
880 static int ip175d_reset(struct ip175c_state *state)
881 {
882 int err = 0;
883
884 // Disable the special tagging mode
885 err |= ip_phy_write_masked(state, 21, 22, 0x0003, 0x0000);
886
887 // Set 802.1q protocol type
888 err |= ip_phy_write(state, 22, 3, 0x8100);
889
890 state->vlan_enabled = 0;
891 err |= ip175d_set_vlan_mode(state);
892
893 return (err ? -EIO : 0);
894 }
895
896 /*** High-level functions ***/
897
898 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
899 {
900 struct ip175c_state *state = dev->priv;
901 int err;
902
903 err = state->regs->get_state(state); // May be set in get_state.
904 if (err < 0)
905 return err;
906 val->value.i = state->vlan_enabled;
907 return 0;
908 }
909
910 static void ip175c_reset_vlan_config(struct ip175c_state *state)
911 {
912 int i;
913
914 state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
915 state->add_tag = 0x0000;
916 for (i = 0; i < MAX_VLANS; i++) {
917 state->vlans[i].ports = 0x0000;
918 state->vlans[i].tag = (i ? i : 16);
919 }
920 for (i = 0; i < MAX_PORTS; i++)
921 state->ports[i].pvid = 0;
922 }
923
924 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
925 {
926 struct ip175c_state *state = dev->priv;
927 int err;
928 int enable;
929
930 err = state->regs->get_state(state);
931 if (err < 0)
932 return err;
933 enable = val->value.i;
934
935 if (state->vlan_enabled == enable) {
936 // Do not change any state.
937 return 0;
938 }
939 state->vlan_enabled = enable;
940
941 // Otherwise, if we are switching state, set fields to a known default.
942 ip175c_reset_vlan_config(state);
943
944 return state->regs->set_vlan_mode(state);
945 }
946
947 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
948 {
949 struct ip175c_state *state = dev->priv;
950 int err;
951 int b;
952 int ind;
953 unsigned int ports;
954
955 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
956 return -EINVAL;
957
958 err = state->regs->get_state(state);
959 if (err<0)
960 return err;
961
962 ports = state->vlans[val->port_vlan].ports;
963 b = 0;
964 ind = 0;
965 while (b < MAX_PORTS) {
966 if (ports&1) {
967 int istagged = ((state->add_tag >> b) & 1);
968 val->value.ports[ind].id = b;
969 val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
970 ind++;
971 }
972 b++;
973 ports >>= 1;
974 }
975 val->len = ind;
976
977 return 0;
978 }
979
980 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
981 {
982 struct ip175c_state *state = dev->priv;
983 int i;
984 int err;
985
986 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
987 return -EINVAL;
988
989 err = state->regs->get_state(state);
990 if (err < 0)
991 return err;
992
993 state->vlans[val->port_vlan].ports = 0;
994 for (i = 0; i < val->len; i++) {
995 unsigned int bitmask = (1<<val->value.ports[i].id);
996 state->vlans[val->port_vlan].ports |= bitmask;
997 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
998 state->add_tag |= bitmask;
999 state->remove_tag &= (~bitmask);
1000 } else {
1001 state->add_tag &= (~bitmask);
1002 state->remove_tag |= bitmask;
1003 }
1004 }
1005
1006 return state->regs->update_state(state);
1007 }
1008
1009 static int ip175c_apply(struct switch_dev *dev)
1010 {
1011 struct ip175c_state *state = dev->priv;
1012 int err;
1013
1014 err = state->regs->get_flags(state);
1015 if (err < 0)
1016 return err;
1017
1018 if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
1019 int val = getPhy(state, state->regs->MII_REGISTER_EN);
1020 if (val < 0) {
1021 return val;
1022 }
1023 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
1024 return setPhy(state, state->regs->MII_REGISTER_EN, val);
1025 }
1026 return 0;
1027 }
1028
1029 static int ip175c_reset(struct switch_dev *dev)
1030 {
1031 struct ip175c_state *state = dev->priv;
1032 int i, err;
1033
1034 err = state->regs->get_flags(state);
1035 if (err < 0)
1036 return err;
1037
1038 if (REG_SUPP(state->regs->RESET_REG)) {
1039 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
1040 if (err < 0)
1041 return err;
1042 err = getPhy(state, state->regs->RESET_REG);
1043
1044 /*
1045 * Data sheet specifies reset period to be 2 msec.
1046 * (I don't see any mention of the 2ms delay in the IP178C spec, only
1047 * in IP175C, but it can't hurt.)
1048 */
1049 mdelay(2);
1050 }
1051
1052 /* reset switch ports */
1053 for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
1054 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
1055 if (err < 0)
1056 return err;
1057 }
1058
1059 ip175c_reset_vlan_config(state);
1060
1061 return state->regs->reset(state);
1062 }
1063
1064 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1065 {
1066 struct ip175c_state *state = dev->priv;
1067 int err;
1068
1069 err = state->regs->get_state(state);
1070 if (err < 0)
1071 return err;
1072
1073 if (state->add_tag & (1<<val->port_vlan)) {
1074 if (state->remove_tag & (1<<val->port_vlan))
1075 val->value.i = 3; // shouldn't ever happen.
1076 else
1077 val->value.i = 1;
1078 } else {
1079 if (state->remove_tag & (1<<val->port_vlan))
1080 val->value.i = 0;
1081 else
1082 val->value.i = 2;
1083 }
1084 return 0;
1085 }
1086
1087 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1088 {
1089 struct ip175c_state *state = dev->priv;
1090 int err;
1091
1092 err = state->regs->get_state(state);
1093 if (err < 0)
1094 return err;
1095
1096 state->add_tag &= ~(1<<val->port_vlan);
1097 state->remove_tag &= ~(1<<val->port_vlan);
1098
1099 if (val->value.i == 0)
1100 state->remove_tag |= (1<<val->port_vlan);
1101 if (val->value.i == 1)
1102 state->add_tag |= (1<<val->port_vlan);
1103
1104 return state->regs->update_state(state);
1105 }
1106
1107 /** Get the current phy address */
1108 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1109 {
1110 struct ip175c_state *state = dev->priv;
1111
1112 val->value.i = state->proc_mii.p;
1113 return 0;
1114 }
1115
1116 /** Set a new phy address for low level access to registers */
1117 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1118 {
1119 struct ip175c_state *state = dev->priv;
1120 int new_reg = val->value.i;
1121
1122 if (new_reg < 0 || new_reg > 31)
1123 state->proc_mii.p = (u16)-1;
1124 else
1125 state->proc_mii.p = (u16)new_reg;
1126 return 0;
1127 }
1128
1129 /** Get the current register number */
1130 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1131 {
1132 struct ip175c_state *state = dev->priv;
1133
1134 val->value.i = state->proc_mii.m;
1135 return 0;
1136 }
1137
1138 /** Set a new register address for low level access to registers */
1139 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1140 {
1141 struct ip175c_state *state = dev->priv;
1142 int new_reg = val->value.i;
1143
1144 if (new_reg < 0 || new_reg > 31)
1145 state->proc_mii.m = (u16)-1;
1146 else
1147 state->proc_mii.m = (u16)new_reg;
1148 return 0;
1149 }
1150
1151 /** Get the register content of state->proc_mii */
1152 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1153 {
1154 struct ip175c_state *state = dev->priv;
1155 int retval = -EINVAL;
1156 if (REG_SUPP(state->proc_mii))
1157 retval = getPhy(state, state->proc_mii);
1158
1159 if (retval < 0) {
1160 return retval;
1161 } else {
1162 val->value.i = retval;
1163 return 0;
1164 }
1165 }
1166
1167 /** Write a value to the register defined by phy/reg above */
1168 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1169 {
1170 struct ip175c_state *state = dev->priv;
1171 int myval, err = -EINVAL;
1172
1173 myval = val->value.i;
1174 if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
1175 err = setPhy(state, state->proc_mii, (u16)myval);
1176 }
1177 return err;
1178 }
1179
1180 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1181 {
1182 struct ip175c_state *state = dev->priv;
1183 val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
1184 return 0;
1185 }
1186
1187 static int ip175c_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1188 {
1189 struct ip175c_state *state = dev->priv;
1190 int vlan = val->port_vlan;
1191
1192 if (vlan < 0 || vlan >= MAX_VLANS)
1193 return -EINVAL;
1194
1195 val->value.i = state->vlans[vlan].tag;
1196 return 0;
1197 }
1198
1199 static int ip175c_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1200 {
1201 struct ip175c_state *state = dev->priv;
1202 int vlan = val->port_vlan;
1203 int tag = val->value.i;
1204
1205 if (vlan < 0 || vlan >= MAX_VLANS)
1206 return -EINVAL;
1207
1208 if (tag < 0 || tag > 4095)
1209 return -EINVAL;
1210
1211 state->vlans[vlan].tag = tag;
1212 return state->regs->update_state(state);
1213 }
1214
1215 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1216 {
1217 struct ip175c_state *state = dev->priv;
1218 int nr = val->port_vlan;
1219 int ctrl;
1220 int autoneg;
1221 int speed;
1222 if (val->value.i == 100) {
1223 speed = 1;
1224 autoneg = 0;
1225 } else if (val->value.i == 10) {
1226 speed = 0;
1227 autoneg = 0;
1228 } else {
1229 autoneg = 1;
1230 speed = 1;
1231 }
1232
1233 /* Can't set speed for cpu port */
1234 if (nr == state->regs->CPU_PORT)
1235 return -EINVAL;
1236
1237 if (nr >= dev->ports || nr < 0)
1238 return -EINVAL;
1239
1240 ctrl = ip_phy_read(state, nr, 0);
1241 if (ctrl < 0)
1242 return -EIO;
1243
1244 ctrl &= (~(1<<12));
1245 ctrl &= (~(1<<13));
1246 ctrl |= (autoneg<<12);
1247 ctrl |= (speed<<13);
1248
1249 return ip_phy_write(state, nr, 0, ctrl);
1250 }
1251
1252 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1253 {
1254 struct ip175c_state *state = dev->priv;
1255 int nr = val->port_vlan;
1256 int speed, status;
1257
1258 if (nr == state->regs->CPU_PORT) {
1259 val->value.i = 100;
1260 return 0;
1261 }
1262
1263 if (nr >= dev->ports || nr < 0)
1264 return -EINVAL;
1265
1266 status = ip_phy_read(state, nr, 1);
1267 speed = ip_phy_read(state, nr, 18);
1268 if (status < 0 || speed < 0)
1269 return -EIO;
1270
1271 if (status & 4)
1272 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1273 else
1274 val->value.i = 0;
1275
1276 return 0;
1277 }
1278
1279 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1280 {
1281 struct ip175c_state *state = dev->priv;
1282 int ctrl, speed, status;
1283 int nr = val->port_vlan;
1284 int len;
1285 char *buf = state->buf; // fixed-length at 80.
1286
1287 if (nr == state->regs->CPU_PORT) {
1288 sprintf(buf, "up, 100 Mbps, cpu port");
1289 val->value.s = buf;
1290 return 0;
1291 }
1292
1293 if (nr >= dev->ports || nr < 0)
1294 return -EINVAL;
1295
1296 ctrl = ip_phy_read(state, nr, 0);
1297 status = ip_phy_read(state, nr, 1);
1298 speed = ip_phy_read(state, nr, 18);
1299 if (ctrl < 0 || status < 0 || speed < 0)
1300 return -EIO;
1301
1302 if (status & 4)
1303 len = sprintf(buf, "up, %d Mbps, %s duplex",
1304 ((speed & (1<<11)) ? 100 : 10),
1305 ((speed & (1<<10)) ? "full" : "half"));
1306 else
1307 len = sprintf(buf, "down");
1308
1309 if (ctrl & (1<<12)) {
1310 len += sprintf(buf+len, ", auto-negotiate");
1311 if (!(status & (1<<5)))
1312 len += sprintf(buf+len, " (in progress)");
1313 } else {
1314 len += sprintf(buf+len, ", fixed speed (%d)",
1315 ((ctrl & (1<<13)) ? 100 : 10));
1316 }
1317
1318 buf[len] = '\0';
1319 val->value.s = buf;
1320 return 0;
1321 }
1322
1323 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1324 {
1325 struct ip175c_state *state = dev->priv;
1326
1327 *val = state->ports[port].pvid;
1328 return 0;
1329 }
1330
1331 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1332 {
1333 struct ip175c_state *state = dev->priv;
1334 int err;
1335
1336 if (val < 0 || val >= MAX_VLANS)
1337 return -EINVAL;
1338
1339 err = state->regs->get_state(state);
1340 if (err < 0)
1341 return err;
1342
1343 state->ports[port].pvid = val;
1344
1345 return state->regs->update_state(state);
1346 }
1347
1348
1349 enum Ports {
1350 IP175C_PORT_STATUS,
1351 IP175C_PORT_LINK,
1352 IP175C_PORT_TAGGED,
1353 IP175C_PORT_PVID,
1354 };
1355
1356 enum Globals {
1357 IP175C_ENABLE_VLAN,
1358 IP175C_GET_NAME,
1359 IP175C_REGISTER_PHY,
1360 IP175C_REGISTER_MII,
1361 IP175C_REGISTER_VALUE,
1362 IP175C_REGISTER_ERRNO,
1363 };
1364
1365 enum Vlans {
1366 IP175C_VLAN_TAG,
1367 };
1368
1369 static const struct switch_attr ip175c_global[] = {
1370 [IP175C_ENABLE_VLAN] = {
1371 .id = IP175C_ENABLE_VLAN,
1372 .type = SWITCH_TYPE_INT,
1373 .name = "enable_vlan",
1374 .description = "Flag to enable or disable VLANs and tagging",
1375 .get = ip175c_get_enable_vlan,
1376 .set = ip175c_set_enable_vlan,
1377 },
1378 [IP175C_GET_NAME] = {
1379 .id = IP175C_GET_NAME,
1380 .type = SWITCH_TYPE_STRING,
1381 .description = "Returns the type of IC+ chip.",
1382 .name = "name",
1383 .get = ip175c_read_name,
1384 .set = NULL,
1385 },
1386 /* jal: added for low level debugging etc. */
1387 [IP175C_REGISTER_PHY] = {
1388 .id = IP175C_REGISTER_PHY,
1389 .type = SWITCH_TYPE_INT,
1390 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1391 .name = "phy",
1392 .get = ip175c_get_phy,
1393 .set = ip175c_set_phy,
1394 },
1395 [IP175C_REGISTER_MII] = {
1396 .id = IP175C_REGISTER_MII,
1397 .type = SWITCH_TYPE_INT,
1398 .description = "Direct register access: set MII register number (0-31)",
1399 .name = "reg",
1400 .get = ip175c_get_reg,
1401 .set = ip175c_set_reg,
1402 },
1403 [IP175C_REGISTER_VALUE] = {
1404 .id = IP175C_REGISTER_VALUE,
1405 .type = SWITCH_TYPE_INT,
1406 .description = "Direct register access: read/write to register (0-65535)",
1407 .name = "val",
1408 .get = ip175c_get_val,
1409 .set = ip175c_set_val,
1410 },
1411 };
1412
1413 static const struct switch_attr ip175c_vlan[] = {
1414 [IP175C_VLAN_TAG] = {
1415 .id = IP175C_VLAN_TAG,
1416 .type = SWITCH_TYPE_INT,
1417 .description = "VLAN tag (0-4095) [IP175D only]",
1418 .name = "tag",
1419 .get = ip175c_get_tag,
1420 .set = ip175c_set_tag,
1421 }
1422 };
1423
1424 static const struct switch_attr ip175c_port[] = {
1425 [IP175C_PORT_STATUS] = {
1426 .id = IP175C_PORT_STATUS,
1427 .type = SWITCH_TYPE_STRING,
1428 .description = "Returns Detailed port status",
1429 .name = "status",
1430 .get = ip175c_get_port_status,
1431 .set = NULL,
1432 },
1433 [IP175C_PORT_LINK] = {
1434 .id = IP175C_PORT_LINK,
1435 .type = SWITCH_TYPE_INT,
1436 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1437 .name = "link",
1438 .get = ip175c_get_port_speed,
1439 .set = ip175c_set_port_speed,
1440 },
1441 [IP175C_PORT_TAGGED] = {
1442 .id = IP175C_PORT_LINK,
1443 .type = SWITCH_TYPE_INT,
1444 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1445 .name = "tagged",
1446 .get = ip175c_get_tagged,
1447 .set = ip175c_set_tagged,
1448 },
1449 };
1450
1451 static int ip175c_probe(struct phy_device *pdev)
1452 {
1453 struct ip175c_state *state;
1454 struct switch_dev *dev;
1455 int err;
1456
1457 /* We only attach to PHY 0, but use all available PHYs */
1458 if (pdev->addr != 0)
1459 return -ENODEV;
1460
1461 state = kzalloc(sizeof(*state), GFP_KERNEL);
1462 if (!state)
1463 return -ENOMEM;
1464
1465 dev = &state->dev;
1466 dev->attr_global.attr = ip175c_global;
1467 dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1468 dev->attr_port.attr = ip175c_port;
1469 dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1470 dev->attr_vlan.attr = ip175c_vlan;
1471 dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1472
1473 dev->get_port_pvid = ip175c_get_pvid;
1474 dev->set_port_pvid = ip175c_set_pvid;
1475 dev->get_vlan_ports = ip175c_get_ports;
1476 dev->set_vlan_ports = ip175c_set_ports;
1477 dev->apply_config = ip175c_apply;
1478 dev->reset_switch = ip175c_reset;
1479
1480 dev->priv = state;
1481 pdev->priv = state;
1482 state->mii_bus = pdev->bus;
1483
1484 err = get_model(state);
1485 if (err < 0)
1486 goto error;
1487
1488 dev->vlans = MAX_VLANS;
1489 dev->cpu_port = state->regs->CPU_PORT;
1490 dev->ports = state->regs->NUM_PORTS;
1491 dev->name = state->regs->NAME;
1492
1493 pr_info("IP175C: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
1494 return 0;
1495
1496 error:
1497 kfree(state);
1498 return err;
1499 }
1500
1501 static int ip175c_config_init(struct phy_device *pdev)
1502 {
1503 struct ip175c_state *state = pdev->priv;
1504 struct net_device *dev = pdev->attached_dev;
1505 int err;
1506
1507 pdev->irq = PHY_IGNORE_INTERRUPT;
1508 err = register_switch(&state->dev, dev);
1509 if (err < 0)
1510 return err;
1511
1512 ip175c_reset(&state->dev);
1513
1514 state->registered = true;
1515
1516 pdev->state = PHY_RUNNING;
1517 pdev->speed = SPEED_100;
1518 pdev->duplex = DUPLEX_FULL;
1519 pdev->pause = pdev->asym_pause = 0;
1520 netif_carrier_on(pdev->attached_dev);
1521
1522 return 0;
1523 }
1524
1525 static void ip175c_remove(struct phy_device *pdev)
1526 {
1527 struct ip175c_state *state = pdev->priv;
1528
1529 if (state->registered)
1530 unregister_switch(&state->dev);
1531 kfree(state);
1532 }
1533
1534 static int ip175c_config_aneg(struct phy_device *pdev)
1535 {
1536 return 0;
1537 }
1538
1539 static int ip175c_read_status(struct phy_device *pdev)
1540 {
1541 return 0;
1542 }
1543
1544 static struct phy_driver ip175c_driver = {
1545 .name = "IC+ IP175C",
1546 .phy_id = 0x02430c00,
1547 .phy_id_mask = 0x0ffffc00,
1548 .features = PHY_BASIC_FEATURES,
1549 .probe = ip175c_probe,
1550 .remove = ip175c_remove,
1551 .config_init = ip175c_config_init,
1552 .config_aneg = ip175c_config_aneg,
1553 .read_status = ip175c_read_status,
1554 .driver = { .owner = THIS_MODULE },
1555 };
1556
1557 static struct phy_driver ip175a_driver = {
1558 .name = "IC+ IP175A",
1559 .phy_id = 0x02430c50,
1560 .phy_id_mask = 0x0ffffff0,
1561 .features = PHY_BASIC_FEATURES,
1562 .probe = ip175c_probe,
1563 .remove = ip175c_remove,
1564 .config_init = ip175c_config_init,
1565 .config_aneg = ip175c_config_aneg,
1566 .read_status = ip175c_read_status,
1567 .driver = { .owner = THIS_MODULE },
1568 };
1569
1570
1571 int __init ip175c_init(void)
1572 {
1573 int ret;
1574
1575 ret = phy_driver_register(&ip175a_driver);
1576 if (ret < 0)
1577 return ret;
1578
1579 return phy_driver_register(&ip175c_driver);
1580 }
1581
1582 void __exit ip175c_exit(void)
1583 {
1584 phy_driver_unregister(&ip175c_driver);
1585 phy_driver_unregister(&ip175a_driver);
1586 }
1587
1588 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1589 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1590 MODULE_LICENSE("GPL");
1591
1592 module_init(ip175c_init);
1593 module_exit(ip175c_exit);
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