2 * swconfig-ip175c.c: Swconfig configuration for IC+ IP175C switch
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>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
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>
33 typedef struct ip175c_reg {
39 #define NOTSUPPORTED {-1,-1}
41 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
45 /*********** CONSTANTS ***********/
46 struct register_mappings {
48 u16 MODEL_NO; // Compare to bits 4-9 of MII register 0,3.
52 /* The default VLAN for each port.
53 Default: 0x0001 for Ports 0,1,2,3
54 0x0002 for Ports 4,5 */
55 reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
57 /* These ports are tagged.
61 bitnum ADD_TAG_BIT[MAX_PORTS];
62 /* These ports are untagged.
63 Default: 0x00 (i.e. do not alter any VLAN tags...)
64 Maybe set to 0 if user disables VLANs. */
65 bitnum REMOVE_TAG_BIT[MAX_PORTS];
67 /* Port M and Port N are on the same VLAN.
68 Default: All ports on all VLANs. */
69 // Use register {29, 19+N/2}
71 // Port 5 uses register {30, 18} but same as odd bits.
72 reg VLAN_LOOKUP_REG_5; // in a different register on IP175C.
73 bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
74 bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
76 /* This VLAN corresponds to which ports.
77 Default: 0x2f,0x30,0x3f,0x3f... */
78 reg TAG_VLAN_MASK_REG;
79 bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
80 bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
89 reg ROUTER_CONTROL_REG;
93 bitnum NUMLAN_GROUPS_MAX;
94 bitnum NUMLAN_GROUPS_BIT;
97 bitnum MII_REGISTER_EN_BIT;
99 // set to 1 for 178C, 0 for 175C.
100 bitnum SIMPLE_VLAN_REGISTERS; // 175C has two vlans per register but 178C has only one.
102 // Pointers to functions which manipulate hardware state
103 int (*get_flags)(struct ip175c_state *state);
104 int (*get_state)(struct ip175c_state *state);
105 int (*update_state)(struct ip175c_state *state);
106 int (*set_vlan_mode)(struct ip175c_state *state);
107 int (*reset)(struct ip175c_state *state);
110 static int ip175c_get_flags(struct ip175c_state *state);
111 static int ip175c_get_state(struct ip175c_state *state);
112 static int ip175c_update_state(struct ip175c_state *state);
113 static int ip175c_set_vlan_mode(struct ip175c_state *state);
114 static int ip175c_do_reset(struct ip175c_state *state);
116 static const struct register_mappings IP178C = {
119 .VLAN_DEFAULT_TAG_REG = {
120 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
121 {30,9},{30,10},{30,11},
124 .ADD_TAG_REG = {30,12},
125 .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
126 .REMOVE_TAG_REG = {30,13},
127 .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
129 .SIMPLE_VLAN_REGISTERS = 1,
131 .VLAN_LOOKUP_REG = {31,0},// +N
132 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
133 .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
134 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
136 .TAG_VLAN_MASK_REG = {30,14}, // +N
137 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
138 .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
143 .MODE_REG = NOTSUPPORTED,
145 .ROUTER_CONTROL_REG = {30,30},
147 .NUMLAN_GROUPS_MAX = 8,
148 .NUMLAN_GROUPS_BIT = 8, // {0-2}
150 .VLAN_CONTROL_REG = {30,13},
156 .MII_REGISTER_EN = NOTSUPPORTED,
158 .get_flags = ip175c_get_flags,
159 .get_state = ip175c_get_state,
160 .update_state = ip175c_update_state,
161 .set_vlan_mode = ip175c_set_vlan_mode,
162 .reset = ip175c_do_reset,
165 static const struct register_mappings IP175C = {
168 .VLAN_DEFAULT_TAG_REG = {
169 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
170 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
173 .ADD_TAG_REG = {29,23},
174 .REMOVE_TAG_REG = {29,23},
175 .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
176 .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
178 .SIMPLE_VLAN_REGISTERS = 0,
180 .VLAN_LOOKUP_REG = {29,19},// +N/2
181 .VLAN_LOOKUP_REG_5 = {30,18},
182 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
183 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
185 .TAG_VLAN_MASK_REG = {30,1}, // +N/2
186 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
187 .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
194 .ROUTER_CONTROL_REG = {30,9},
196 .NUMLAN_GROUPS_MAX = 8,
197 .NUMLAN_GROUPS_BIT = 0, // {0-2}
199 .VLAN_CONTROL_REG = {30,9},
205 .MII_REGISTER_EN = NOTSUPPORTED,
207 .get_flags = ip175c_get_flags,
208 .get_state = ip175c_get_state,
209 .update_state = ip175c_update_state,
210 .set_vlan_mode = ip175c_set_vlan_mode,
211 .reset = ip175c_do_reset,
214 static const struct register_mappings IP175A = {
217 .VLAN_DEFAULT_TAG_REG = {
218 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
219 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
222 .ADD_TAG_REG = {0,23},
223 .REMOVE_TAG_REG = {0,23},
224 .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
225 .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
227 .SIMPLE_VLAN_REGISTERS = 0,
229 // Only programmable via EEPROM
230 .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
231 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
232 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
233 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
235 .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
236 .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
237 .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
240 .RESET_REG = NOTSUPPORTED,
242 .MODE_REG = NOTSUPPORTED,
244 .ROUTER_CONTROL_REG = NOTSUPPORTED,
245 .VLAN_CONTROL_REG = NOTSUPPORTED,
248 .NUMLAN_GROUPS_MAX = -1,
249 .NUMLAN_GROUPS_BIT = -1, // {0-2}
254 .MII_REGISTER_EN = {0, 18},
255 .MII_REGISTER_EN_BIT = 7,
257 .get_flags = ip175c_get_flags,
258 .get_state = ip175c_get_state,
259 .update_state = ip175c_update_state,
260 .set_vlan_mode = ip175c_set_vlan_mode,
261 .reset = ip175c_do_reset,
265 struct ip175c_state {
266 struct switch_dev dev;
267 struct mii_bus *mii_bus;
270 int router_mode; // ROUTER_EN
271 int vlan_enabled; // TAG_VLAN_EN
274 unsigned int shareports;
276 unsigned int add_tag;
277 unsigned int remove_tag;
279 unsigned int vlan_ports[MAX_VLANS];
280 const struct register_mappings *regs;
281 reg proc_mii; // phy/reg for the low level register access via swconfig
287 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
289 int val = mdiobus_read(state->mii_bus, port, reg);
291 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
294 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
299 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
304 pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
306 err = mdiobus_write(state->mii_bus, port, reg, val);
308 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
312 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
314 int val = ip_phy_read(state, port, reg);
317 return ip_phy_write(state, port, reg, (val & ~mask) | data);
320 static int getPhy(struct ip175c_state *state, reg mii)
324 return ip_phy_read(state, mii.p, mii.m);
327 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
333 err = ip_phy_write(state, mii.p, mii.m, value);
342 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
343 * NOTE: these macros will return if there is an error!
346 #define GET_PORT_BITS(state, bits, addr, bit_lookup) \
348 int i, val = getPhy((state), (addr)); \
352 for (i = 0; i < MAX_PORTS; i++) { \
353 if ((bit_lookup)[i] == -1) continue; \
354 if (val & (1<<(bit_lookup)[i])) \
359 #define SET_PORT_BITS(state, bits, addr, bit_lookup) \
361 int i, val = getPhy((state), (addr)); \
364 for (i = 0; i < MAX_PORTS; i++) { \
365 unsigned int newmask = ((bits)&(1<<i)); \
366 if ((bit_lookup)[i] == -1) continue; \
367 val &= ~(1<<(bit_lookup)[i]); \
368 val |= ((newmask>>i)<<(bit_lookup)[i]); \
370 val = setPhy((state), (addr), val); \
376 static int get_model(struct ip175c_state *state)
378 reg oui_id_reg = {0, 2};
380 reg model_no_reg = {0, 3};
381 int model_no, model_no_orig;
383 // 175 and 178 have the same oui ID.
384 reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
387 oui_id = getPhy(state, oui_id_reg);
388 if (oui_id != 0x0243) {
390 return -ENODEV; // Not a IC+ chip.
392 oui_id = getPhy(state, oui_id_reg_178c);
393 if (oui_id == 0x0243) {
397 model_no_orig = getPhy(state, model_no_reg);
398 if (model_no_orig < 0) {
401 model_no = model_no_orig >> 4; // shift out revision number.
402 model_no &= 0x3f; // only take the model number (low 6 bits).
403 if (model_no == IP175A.MODEL_NO) {
404 state->regs = &IP175A;
405 } else if (model_no == IP175C.MODEL_NO) {
407 state->regs = &IP178C;
409 state->regs = &IP175C;
412 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
418 /** Get only the vlan and router flags on the router **/
419 static int ip175c_get_flags(struct ip175c_state *state)
423 state->router_mode = 0;
424 state->vlan_enabled = -1; // hack
425 state->num_vlans = 0;
427 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
428 return 0; // not an error if it doesn't support enable vlan.
431 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
435 if (state->regs->ROUTER_EN_BIT >= 0)
436 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
438 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
439 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
440 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
441 state->num_vlans+=1; // does not include WAN.
444 val = getPhy(state, state->regs->VLAN_CONTROL_REG);
448 if (state->regs->TAG_VLAN_BIT >= 0)
449 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
454 /** Get all state variables for VLAN mappings and port-based tagging **/
455 static int ip175c_get_state(struct ip175c_state *state)
460 ret = ip175c_get_flags(state);
465 GET_PORT_BITS(state, state->remove_tag,
466 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
467 GET_PORT_BITS(state, state->add_tag,
468 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
470 if (state->vlan_enabled == -1) {
471 // not sure how to get this...
472 state->vlan_enabled = (state->remove_tag || state->add_tag);
475 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
476 for (j=0; j<MAX_PORTS; j++) {
477 state->ports[j].shareports = 0; // initialize them in case.
479 for (j=0; j<state->regs->NUM_PORTS; j++) {
481 const bitnum *bit_lookup = (j%2==0)?
482 state->regs->VLAN_LOOKUP_EVEN_BIT:
483 state->regs->VLAN_LOOKUP_ODD_BIT;
484 addr = state->regs->VLAN_LOOKUP_REG;
485 if (state->regs->SIMPLE_VLAN_REGISTERS) {
500 addr = state->regs->VLAN_LOOKUP_REG_5;
505 if (REG_SUPP(addr)) {
506 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
510 for (j=0; j<MAX_PORTS; j++) {
511 state->ports[j].shareports = 0xff;
515 for (i=0; i<MAX_PORTS; i++) {
516 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
517 int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
521 state->ports[i].pvid = val;
523 state->ports[i].pvid = 0;
527 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
528 for (j=0; j<MAX_VLANS; j++) {
529 reg addr = state->regs->TAG_VLAN_MASK_REG;
530 const bitnum *bit_lookup = (j%2==0)?
531 state->regs->TAG_VLAN_MASK_EVEN_BIT:
532 state->regs->TAG_VLAN_MASK_ODD_BIT;
533 if (state->regs->SIMPLE_VLAN_REGISTERS) {
538 GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
541 for (j=0; j<MAX_VLANS; j++) {
542 state->vlan_ports[j] = 0;
543 for (i=0; i<state->regs->NUM_PORTS; i++) {
544 if ((state->ports[i].pvid == j) ||
545 (state->ports[i].pvid == 0)) {
546 state->vlan_ports[j] |= (1<<i);
555 /** Only set vlan and router flags in the switch **/
556 static int ip175c_set_flags(struct ip175c_state *state)
560 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
564 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
568 if (state->regs->ROUTER_EN_BIT >= 0) {
569 if (state->router_mode) {
570 val |= (1<<state->regs->ROUTER_EN_BIT);
572 val &= (~(1<<state->regs->ROUTER_EN_BIT));
575 if (state->regs->TAG_VLAN_BIT >= 0) {
576 if (state->vlan_enabled) {
577 val |= (1<<state->regs->TAG_VLAN_BIT);
579 val &= (~(1<<state->regs->TAG_VLAN_BIT));
582 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
583 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
584 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
585 val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
586 } else if (state->num_vlans >= 1) {
587 val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
590 return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
593 /** Set all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
594 static int ip175c_set_state(struct ip175c_state *state)
598 SET_PORT_BITS(state, state->add_tag,
599 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
600 SET_PORT_BITS(state, state->remove_tag,
601 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
603 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
604 for (j=0; j<state->regs->NUM_PORTS; j++) {
606 const bitnum *bit_lookup = (j%2==0)?
607 state->regs->VLAN_LOOKUP_EVEN_BIT:
608 state->regs->VLAN_LOOKUP_ODD_BIT;
610 // duplicate code -- sorry
611 addr = state->regs->VLAN_LOOKUP_REG;
612 if (state->regs->SIMPLE_VLAN_REGISTERS) {
627 addr = state->regs->VLAN_LOOKUP_REG_5;
630 addr.m = -1; // shouldn't get here, but...
634 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
635 if (REG_SUPP(addr)) {
636 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
640 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
641 for (j=0; j<MAX_VLANS; j++) {
642 reg addr = state->regs->TAG_VLAN_MASK_REG;
643 const bitnum *bit_lookup = (j%2==0)?
644 state->regs->TAG_VLAN_MASK_EVEN_BIT:
645 state->regs->TAG_VLAN_MASK_ODD_BIT;
646 unsigned int vlan_mask;
647 if (state->regs->SIMPLE_VLAN_REGISTERS) {
652 vlan_mask = state->vlan_ports[j];
653 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
657 for (i=0; i<MAX_PORTS; i++) {
658 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
659 int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
660 state->ports[i].pvid);
667 return ip175c_set_flags(state);
671 * Uses only the VLAN port mask and the add tag mask to generate the other fields:
672 * which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
674 static void ip175c_correct_vlan_state(struct ip175c_state *state)
677 state->num_vlans = 0;
678 for (i=0; i<MAX_VLANS; i++) {
679 if (state->vlan_ports[i] != 0) {
680 state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
684 for (i=0; i<state->regs->NUM_PORTS; i++) {
685 unsigned int portmask = (1<<i);
686 if (!state->vlan_enabled) {
687 // Share with everybody!
688 state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
691 state->ports[i].shareports = portmask;
692 for (j=0; j<MAX_VLANS; j++) {
693 if (state->vlan_ports[j] & portmask)
694 state->ports[i].shareports |= state->vlan_ports[j];
697 state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
700 static int ip175c_update_state(struct ip175c_state *state)
702 ip175c_correct_vlan_state(state);
703 return ip175c_set_state(state);
706 static int ip175c_set_vlan_mode(struct ip175c_state *state)
708 return ip175c_update_state(state);
711 static int ip175c_do_reset(struct ip175c_state *state)
715 if (REG_SUPP(state->regs->MODE_REG)) {
716 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
719 err = getPhy(state, state->regs->MODE_REG);
727 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
729 struct ip175c_state *state = dev->priv;
732 err = state->regs->get_state(state); // May be set in get_state.
735 val->value.i = state->vlan_enabled;
739 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
741 struct ip175c_state *state = dev->priv;
746 err = state->regs->get_state(state);
749 enable = val->value.i;
751 if (state->vlan_enabled == enable) {
752 // Do not change any state.
755 state->vlan_enabled = enable;
757 // Otherwise, if we are switching state, set fields to a known default.
758 state->remove_tag = 0x0000;
759 state->add_tag = 0x0000;
760 for (i = 0; i < MAX_VLANS; i++)
761 state->vlan_ports[i] = 0x0;
763 return state->regs->set_vlan_mode(state);
766 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
768 struct ip175c_state *state = dev->priv;
774 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
777 err = state->regs->get_state(state);
781 ports = state->vlan_ports[val->port_vlan];
784 while (b < MAX_PORTS) {
786 int istagged = ((state->add_tag >> b) & 1);
787 val->value.ports[ind].id = b;
788 val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
799 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
801 struct ip175c_state *state = dev->priv;
805 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
808 err = state->regs->get_state(state);
812 state->vlan_ports[val->port_vlan] = 0;
813 for (i = 0; i < val->len; i++) {
814 int bitmask = (1<<val->value.ports[i].id);
815 state->vlan_ports[val->port_vlan] |= bitmask;
816 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
817 state->add_tag |= bitmask;
819 state->add_tag &= (~bitmask);
823 return state->regs->update_state(state);
826 static int ip175c_apply(struct switch_dev *dev)
828 struct ip175c_state *state = dev->priv;
831 err = state->regs->get_flags(state);
835 if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
836 int val = getPhy(state, state->regs->MII_REGISTER_EN);
840 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
841 return setPhy(state, state->regs->MII_REGISTER_EN, val);
846 static int ip175c_reset(struct switch_dev *dev)
848 struct ip175c_state *state = dev->priv;
851 err = state->regs->get_flags(state);
855 if (REG_SUPP(state->regs->RESET_REG)) {
856 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
859 err = getPhy(state, state->regs->RESET_REG);
862 * Data sheet specifies reset period to be 2 msec.
863 * (I don't see any mention of the 2ms delay in the IP178C spec, only
864 * in IP175C, but it can't hurt.)
869 /* reset switch ports */
870 for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
871 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
876 return state->regs->reset(state);
879 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
881 struct ip175c_state *state = dev->priv;
884 err = state->regs->get_state(state);
888 if (state->add_tag & (1<<val->port_vlan)) {
889 if (state->remove_tag & (1<<val->port_vlan))
890 val->value.i = 3; // shouldn't ever happen.
894 if (state->remove_tag & (1<<val->port_vlan))
902 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
904 struct ip175c_state *state = dev->priv;
907 err = state->regs->get_state(state);
911 state->add_tag &= ~(1<<val->port_vlan);
912 state->remove_tag &= ~(1<<val->port_vlan);
914 if (val->value.i == 0)
915 state->remove_tag |= (1<<val->port_vlan);
916 if (val->value.i == 1)
917 state->add_tag |= (1<<val->port_vlan);
919 return state->regs->update_state(state);
922 /** Get the current phy address */
923 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
925 struct ip175c_state *state = dev->priv;
927 val->value.i = state->proc_mii.p;
931 /** Set a new phy address for low level access to registers */
932 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
934 struct ip175c_state *state = dev->priv;
935 int new_reg = val->value.i;
937 if (new_reg < 0 || new_reg > 31)
938 state->proc_mii.p = (u16)-1;
940 state->proc_mii.p = (u16)new_reg;
944 /** Get the current register number */
945 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
947 struct ip175c_state *state = dev->priv;
949 val->value.i = state->proc_mii.m;
953 /** Set a new register address for low level access to registers */
954 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
956 struct ip175c_state *state = dev->priv;
957 int new_reg = val->value.i;
959 if (new_reg < 0 || new_reg > 31)
960 state->proc_mii.m = (u16)-1;
962 state->proc_mii.m = (u16)new_reg;
966 /** Get the register content of state->proc_mii */
967 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
969 struct ip175c_state *state = dev->priv;
970 int retval = -EINVAL;
971 if (REG_SUPP(state->proc_mii))
972 retval = getPhy(state, state->proc_mii);
977 val->value.i = retval;
982 /** Write a value to the register defined by phy/reg above */
983 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
985 struct ip175c_state *state = dev->priv;
986 int myval, err = -EINVAL;
988 myval = val->value.i;
989 if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
990 err = setPhy(state, state->proc_mii, (u16)myval);
995 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
997 struct ip175c_state *state = dev->priv;
998 val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
1002 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1004 struct ip175c_state *state = dev->priv;
1005 int nr = val->port_vlan;
1009 if (val->value.i == 100) {
1012 } else if (val->value.i == 10) {
1020 /* Can't set speed for cpu port */
1021 if (nr == state->regs->CPU_PORT)
1024 if (nr >= dev->ports || nr < 0)
1027 ctrl = ip_phy_read(state, nr, 0);
1033 ctrl |= (autoneg<<12);
1034 ctrl |= (speed<<13);
1036 return ip_phy_write(state, nr, 0, ctrl);
1039 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1041 struct ip175c_state *state = dev->priv;
1042 int nr = val->port_vlan;
1045 if (nr == state->regs->CPU_PORT) {
1050 if (nr >= dev->ports || nr < 0)
1053 status = ip_phy_read(state, nr, 1);
1054 speed = ip_phy_read(state, nr, 18);
1055 if (status < 0 || speed < 0)
1059 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1066 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1068 struct ip175c_state *state = dev->priv;
1069 int ctrl, speed, status;
1070 int nr = val->port_vlan;
1072 char *buf = state->buf; // fixed-length at 80.
1074 if (nr == state->regs->CPU_PORT) {
1075 sprintf(buf, "up, 100 Mbps, cpu port");
1080 if (nr >= dev->ports || nr < 0)
1083 ctrl = ip_phy_read(state, nr, 0);
1084 status = ip_phy_read(state, nr, 1);
1085 speed = ip_phy_read(state, nr, 18);
1086 if (ctrl < 0 || status < 0 || speed < 0)
1090 len = sprintf(buf, "up, %d Mbps, %s duplex",
1091 ((speed & (1<<11)) ? 100 : 10),
1092 ((speed & (1<<10)) ? "full" : "half"));
1094 len = sprintf(buf, "down");
1096 if (ctrl & (1<<12)) {
1097 len += sprintf(buf+len, ", auto-negotiate");
1098 if (!(status & (1<<5)))
1099 len += sprintf(buf+len, " (in progress)");
1101 len += sprintf(buf+len, ", fixed speed (%d)",
1102 ((ctrl & (1<<13)) ? 100 : 10));
1110 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1112 struct ip175c_state *state = dev->priv;
1114 *val = state->ports[port].pvid;
1118 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1120 struct ip175c_state *state = dev->priv;
1123 if (val < 0 || val >= MAX_VLANS)
1126 err = state->regs->get_state(state);
1130 state->ports[port].pvid = val;
1132 return state->regs->update_state(state);
1146 IP175C_REGISTER_PHY,
1147 IP175C_REGISTER_MII,
1148 IP175C_REGISTER_VALUE,
1149 IP175C_REGISTER_ERRNO,
1152 static const struct switch_attr ip175c_global[] = {
1153 [IP175C_ENABLE_VLAN] = {
1154 .id = IP175C_ENABLE_VLAN,
1155 .type = SWITCH_TYPE_INT,
1156 .name = "enable_vlan",
1157 .description = "Flag to enable or disable VLANs and tagging",
1158 .get = ip175c_get_enable_vlan,
1159 .set = ip175c_set_enable_vlan,
1161 [IP175C_GET_NAME] = {
1162 .id = IP175C_GET_NAME,
1163 .type = SWITCH_TYPE_STRING,
1164 .description = "Returns the type of IC+ chip.",
1166 .get = ip175c_read_name,
1169 /* jal: added for low level debugging etc. */
1170 [IP175C_REGISTER_PHY] = {
1171 .id = IP175C_REGISTER_PHY,
1172 .type = SWITCH_TYPE_INT,
1173 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1175 .get = ip175c_get_phy,
1176 .set = ip175c_set_phy,
1178 [IP175C_REGISTER_MII] = {
1179 .id = IP175C_REGISTER_MII,
1180 .type = SWITCH_TYPE_INT,
1181 .description = "Direct register access: set MII register number (0-31)",
1183 .get = ip175c_get_reg,
1184 .set = ip175c_set_reg,
1186 [IP175C_REGISTER_VALUE] = {
1187 .id = IP175C_REGISTER_VALUE,
1188 .type = SWITCH_TYPE_INT,
1189 .description = "Direct register access: read/write to register (0-65535)",
1191 .get = ip175c_get_val,
1192 .set = ip175c_set_val,
1196 static const struct switch_attr ip175c_vlan[] = {
1199 static const struct switch_attr ip175c_port[] = {
1200 [IP175C_PORT_STATUS] = {
1201 .id = IP175C_PORT_STATUS,
1202 .type = SWITCH_TYPE_STRING,
1203 .description = "Returns Detailed port status",
1205 .get = ip175c_get_port_status,
1208 [IP175C_PORT_LINK] = {
1209 .id = IP175C_PORT_LINK,
1210 .type = SWITCH_TYPE_INT,
1211 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1213 .get = ip175c_get_port_speed,
1214 .set = ip175c_set_port_speed,
1216 [IP175C_PORT_TAGGED] = {
1217 .id = IP175C_PORT_LINK,
1218 .type = SWITCH_TYPE_INT,
1219 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1221 .get = ip175c_get_tagged,
1222 .set = ip175c_set_tagged,
1226 static int ip175c_probe(struct phy_device *pdev)
1228 struct ip175c_state *state;
1229 struct switch_dev *dev;
1232 /* We only attach to PHY 0, but use all available PHYs */
1233 if (pdev->addr != 0)
1236 state = kzalloc(sizeof(*state), GFP_KERNEL);
1241 dev->attr_global.attr = ip175c_global;
1242 dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1243 dev->attr_port.attr = ip175c_port;
1244 dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1245 dev->attr_vlan.attr = ip175c_vlan;
1246 dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1248 dev->get_port_pvid = ip175c_get_pvid;
1249 dev->set_port_pvid = ip175c_set_pvid;
1250 dev->get_vlan_ports = ip175c_get_ports;
1251 dev->set_vlan_ports = ip175c_set_ports;
1252 dev->apply_config = ip175c_apply;
1253 dev->reset_switch = ip175c_reset;
1257 state->mii_bus = pdev->bus;
1259 err = get_model(state);
1263 dev->vlans = MAX_VLANS;
1264 dev->cpu_port = state->regs->CPU_PORT;
1265 dev->ports = state->regs->NUM_PORTS;
1266 dev->name = state->regs->NAME;
1275 static int ip175c_config_init(struct phy_device *pdev)
1277 struct ip175c_state *state = pdev->priv;
1278 struct net_device *dev = pdev->attached_dev;
1281 pdev->irq = PHY_IGNORE_INTERRUPT;
1282 err = register_switch(&state->dev, dev);
1286 ip175c_reset(&state->dev);
1288 state->registered = true;
1289 netif_carrier_on(pdev->attached_dev);
1294 static void ip175c_remove(struct phy_device *pdev)
1296 struct ip175c_state *state = pdev->priv;
1298 if (state->registered)
1299 unregister_switch(&state->dev);
1303 static int ip175c_config_aneg(struct phy_device *pdev)
1308 static int ip175c_read_status(struct phy_device *pdev)
1310 pdev->speed = SPEED_100;
1311 pdev->duplex = DUPLEX_FULL;
1312 pdev->pause = pdev->asym_pause = 0;
1316 static struct phy_driver ip175c_driver = {
1317 .name = "IC+ IP175C",
1318 .phy_id = 0x02430d80,
1319 .phy_id_mask = 0x0ffffff0,
1320 .features = PHY_BASIC_FEATURES,
1321 .probe = ip175c_probe,
1322 .remove = ip175c_remove,
1323 .config_init = ip175c_config_init,
1324 .config_aneg = ip175c_config_aneg,
1325 .read_status = ip175c_read_status,
1326 .driver = { .owner = THIS_MODULE },
1329 static struct phy_driver ip175a_driver = {
1330 .name = "IC+ IP175A",
1331 .phy_id = 0x02430c50,
1332 .phy_id_mask = 0x0ffffff0,
1333 .features = PHY_BASIC_FEATURES,
1334 .probe = ip175c_probe,
1335 .remove = ip175c_remove,
1336 .config_init = ip175c_config_init,
1337 .config_aneg = ip175c_config_aneg,
1338 .read_status = ip175c_read_status,
1339 .driver = { .owner = THIS_MODULE },
1343 int __init ip175c_init(void)
1347 ret = phy_driver_register(&ip175a_driver);
1351 return phy_driver_register(&ip175c_driver);
1354 void __exit ip175c_exit(void)
1356 phy_driver_unregister(&ip175c_driver);
1357 phy_driver_unregister(&ip175a_driver);
1360 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1361 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1362 MODULE_LICENSE("GPL");
1364 module_init(ip175c_init);
1365 module_exit(ip175c_exit);