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))
43 /*********** CONSTANTS ***********/
44 struct register_mappings {
46 u16 MODEL_NO; // compare to bits 4-9 of MII register 0,3.
50 /* The default VLAN for each port.
51 Default: 0x0001 for Ports 0,1,2,3
52 0x0002 for Ports 4,5 */
53 reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
55 /* These ports are tagged.
59 bitnum ADD_TAG_BIT[MAX_PORTS];
60 /* These ports are untagged.
61 Default: 0x00 (i.e. do not alter any VLAN tags...)
62 Maybe set to 0 if user disables VLANs. */
63 bitnum REMOVE_TAG_BIT[MAX_PORTS];
65 /* Port M and Port N are on the same VLAN.
66 Default: All ports on all VLANs. */
67 // Use register {29, 19+N/2}
69 // Port 5 uses register {30, 18} but same as odd bits.
70 reg VLAN_LOOKUP_REG_5; // in a different register on IP175C.
71 bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
72 bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
74 /* This VLAN corresponds to which ports.
75 Default: 0x2f,0x30,0x3f,0x3f... */
76 reg TAG_VLAN_MASK_REG;
77 bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
78 bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
87 reg ROUTER_CONTROL_REG;
91 bitnum NUMLAN_GROUPS_MAX;
92 bitnum NUMLAN_GROUPS_BIT;
95 bitnum MII_REGISTER_EN_BIT;
97 // set to 1 for 178C, 0 for 175C.
98 bitnum SIMPLE_VLAN_REGISTERS; // 175C has two vlans per register but 178C has only one.
101 static const struct register_mappings IP178C = {
104 .VLAN_DEFAULT_TAG_REG = {
105 {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
106 {30,9},{30,10},{30,11},
109 .ADD_TAG_REG = {30,12},
110 .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
111 .REMOVE_TAG_REG = {30,13},
112 .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
114 .SIMPLE_VLAN_REGISTERS = 1,
116 .VLAN_LOOKUP_REG = {31,0},// +N
117 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
118 .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
119 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
121 .TAG_VLAN_MASK_REG = {30,14}, // +N
122 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
123 .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
128 .MODE_REG = NOTSUPPORTED,
130 .ROUTER_CONTROL_REG = {30,30},
132 .NUMLAN_GROUPS_MAX = 8,
133 .NUMLAN_GROUPS_BIT = 8, // {0-2}
135 .VLAN_CONTROL_REG = {30,13},
141 .MII_REGISTER_EN = NOTSUPPORTED,
145 static const struct register_mappings IP175C = {
148 .VLAN_DEFAULT_TAG_REG = {
149 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
150 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
153 .ADD_TAG_REG = {29,23},
154 .REMOVE_TAG_REG = {29,23},
155 .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
156 .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
158 .SIMPLE_VLAN_REGISTERS = 0,
160 .VLAN_LOOKUP_REG = {29,19},// +N/2
161 .VLAN_LOOKUP_REG_5 = {30,18},
162 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
163 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
165 .TAG_VLAN_MASK_REG = {30,1}, // +N/2
166 .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
167 .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
174 .ROUTER_CONTROL_REG = {30,9},
176 .NUMLAN_GROUPS_MAX = 8,
177 .NUMLAN_GROUPS_BIT = 0, // {0-2}
179 .VLAN_CONTROL_REG = {30,9},
185 .MII_REGISTER_EN = NOTSUPPORTED,
189 static const struct register_mappings IP175A = {
192 .VLAN_DEFAULT_TAG_REG = {
193 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
194 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
197 .ADD_TAG_REG = {0,23},
198 .REMOVE_TAG_REG = {0,23},
199 .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
200 .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
202 .SIMPLE_VLAN_REGISTERS = 0,
204 // Register 19-21 documentation is missing/contradictory.
205 // For registers 19-21 ports need to be: even numbers to MSB, odd to LSB.
206 // This contradicts text for ROM registers, but follows logic of CoS bits.
208 .VLAN_LOOKUP_REG = {0,19},// +N/2
209 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
210 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
211 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
213 .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
214 .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
215 .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
218 .RESET_REG = NOTSUPPORTED,
220 .MODE_REG = NOTSUPPORTED,
222 .ROUTER_CONTROL_REG = NOTSUPPORTED,
223 .VLAN_CONTROL_REG = NOTSUPPORTED,
226 .NUMLAN_GROUPS_MAX = -1,
227 .NUMLAN_GROUPS_BIT = -1, // {0-2}
232 .MII_REGISTER_EN = {0, 18},
233 .MII_REGISTER_EN_BIT = 7,
237 struct ip175c_state {
238 struct switch_dev dev;
239 struct mii_bus *mii_bus;
242 int router_mode; // ROUTER_EN
243 int vlan_enabled; // TAG_VLAN_EN
246 unsigned int shareports;
248 unsigned int add_tag;
249 unsigned int remove_tag;
251 unsigned int vlan_ports[MAX_VLANS];
252 const struct register_mappings *regs;
253 reg proc_mii; /*!< phy/reg for the low level register access via /proc */
258 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
260 int val = mdiobus_read(state->mii_bus, port, reg);
262 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
265 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
271 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
276 pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
278 err = mdiobus_write(state->mii_bus, port, reg, val);
280 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
285 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
287 int val = ip_phy_read(state, port, reg);
290 return ip_phy_write(state, port, reg, (val & ~mask) | data);
293 static int getPhy(struct ip175c_state *state, reg mii)
297 return ip_phy_read(state, mii.p, mii.m);
300 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
306 err = ip_phy_write(state, mii.p, mii.m, value);
314 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
315 * NOTE: these macros will return if there is an error!
318 #define GET_PORT_BITS(state, bits, addr, bit_lookup) \
320 int i, val = getPhy((state), (addr)); \
324 for (i = 0; i < MAX_PORTS; i++) { \
325 if ((bit_lookup)[i] == -1) continue; \
326 if (val & (1<<(bit_lookup)[i])) \
331 #define SET_PORT_BITS(state, bits, addr, bit_lookup) \
333 int i, val = getPhy((state), (addr)); \
336 for (i = 0; i < MAX_PORTS; i++) { \
337 unsigned int newmask = ((bits)&(1<<i)); \
338 if ((bit_lookup)[i] == -1) continue; \
339 val &= ~(1<<(bit_lookup)[i]); \
340 val |= ((newmask>>i)<<(bit_lookup)[i]); \
342 val = setPhy((state), (addr), val); \
347 static int get_model(struct ip175c_state *state)
349 reg oui_id_reg = {0, 2};
351 reg model_no_reg = {0, 3};
352 int model_no, model_no_orig;
354 // 175 and 178 have the same oui ID.
355 reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
358 oui_id = getPhy(state, oui_id_reg);
359 if (oui_id != 0x0243) {
361 return -ENODEV; // Not a IC+ chip.
363 oui_id = getPhy(state, oui_id_reg_178c);
364 if (oui_id == 0x0243) {
368 model_no_orig = getPhy(state, model_no_reg);
369 if (model_no_orig < 0) {
372 model_no = model_no_orig >> 4; // shift out revision number.
373 model_no &= 0x3f; // only take the model number (low 6 bits).
374 if (model_no == IP175A.MODEL_NO) {
375 state->regs = &IP175A;
376 } else if (model_no == IP175C.MODEL_NO) {
378 state->regs = &IP178C;
380 state->regs = &IP175C;
383 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
389 /** Get only the vlan and router flags on the router **/
390 static int get_flags(struct ip175c_state *state)
394 state->router_mode = 0;
395 state->vlan_enabled = -1; // hack
396 state->num_vlans = 0;
398 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
399 return 0; // not an error if it doesn't support enable vlan.
402 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
406 if (state->regs->ROUTER_EN_BIT >= 0)
407 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
409 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
410 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
411 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
412 state->num_vlans+=1; // does not include WAN.
416 val = getPhy(state, state->regs->VLAN_CONTROL_REG);
420 if (state->regs->TAG_VLAN_BIT >= 0)
421 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
425 /** Get all state variables for VLAN mappings and port-based tagging. **/
426 static int get_state(struct ip175c_state *state)
430 ret = get_flags(state);
434 GET_PORT_BITS(state, state->remove_tag,
435 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
436 GET_PORT_BITS(state, state->add_tag,
437 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
439 if (state->vlan_enabled == -1) {
440 // not sure how to get this...
441 state->vlan_enabled = (state->remove_tag || state->add_tag);
444 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
445 for (j=0; j<MAX_PORTS; j++) {
446 state->ports[j].shareports = 0; // initialize them in case.
448 for (j=0; j<state->regs->NUM_PORTS; j++) {
450 const bitnum *bit_lookup = (j%2==0)?
451 state->regs->VLAN_LOOKUP_EVEN_BIT:
452 state->regs->VLAN_LOOKUP_ODD_BIT;
453 addr = state->regs->VLAN_LOOKUP_REG;
454 if (state->regs->SIMPLE_VLAN_REGISTERS) {
469 addr = state->regs->VLAN_LOOKUP_REG_5;
474 if (REG_SUPP(addr)) {
475 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
479 for (j=0; j<MAX_PORTS; j++) {
480 state->ports[j].shareports = 0xff;
484 for (i=0; i<MAX_PORTS; i++) {
485 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
486 int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
490 state->ports[i].pvid = val;
492 state->ports[i].pvid = 0;
496 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
497 for (j=0; j<MAX_VLANS; j++) {
498 reg addr = state->regs->TAG_VLAN_MASK_REG;
499 const bitnum *bit_lookup = (j%2==0)?
500 state->regs->TAG_VLAN_MASK_EVEN_BIT:
501 state->regs->TAG_VLAN_MASK_ODD_BIT;
502 if (state->regs->SIMPLE_VLAN_REGISTERS) {
507 GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
510 for (j=0; j<MAX_VLANS; j++) {
511 state->vlan_ports[j] = 0;
512 for (i=0; i<state->regs->NUM_PORTS; i++) {
513 if ((state->ports[i].pvid == j) ||
514 (state->ports[i].pvid == 0)) {
515 state->vlan_ports[j] |= (1<<i);
525 /** Only update vlan and router flags in the switch **/
526 static int update_flags(struct ip175c_state *state)
530 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
534 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
538 if (state->regs->ROUTER_EN_BIT >= 0) {
539 if (state->router_mode) {
540 val |= (1<<state->regs->ROUTER_EN_BIT);
542 val &= (~(1<<state->regs->ROUTER_EN_BIT));
545 if (state->regs->TAG_VLAN_BIT >= 0) {
546 if (state->vlan_enabled) {
547 val |= (1<<state->regs->TAG_VLAN_BIT);
549 val &= (~(1<<state->regs->TAG_VLAN_BIT));
552 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
553 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
554 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
555 val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
556 } else if (state->num_vlans >= 1) {
557 val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
560 return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
563 /** Update all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
564 static int update_state(struct ip175c_state *state)
568 SET_PORT_BITS(state, state->add_tag,
569 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
570 SET_PORT_BITS(state, state->remove_tag,
571 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
573 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
574 for (j=0; j<state->regs->NUM_PORTS; j++) {
576 const bitnum *bit_lookup = (j%2==0)?
577 state->regs->VLAN_LOOKUP_EVEN_BIT:
578 state->regs->VLAN_LOOKUP_ODD_BIT;
580 // duplicate code -- sorry
581 addr = state->regs->VLAN_LOOKUP_REG;
582 if (state->regs->SIMPLE_VLAN_REGISTERS) {
597 addr = state->regs->VLAN_LOOKUP_REG_5;
600 addr.m = -1; // shouldn't get here, but...
604 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
605 if (REG_SUPP(addr)) {
606 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
610 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
611 for (j=0; j<MAX_VLANS; j++) {
612 reg addr = state->regs->TAG_VLAN_MASK_REG;
613 const bitnum *bit_lookup = (j%2==0)?
614 state->regs->TAG_VLAN_MASK_EVEN_BIT:
615 state->regs->TAG_VLAN_MASK_ODD_BIT;
616 unsigned int vlan_mask;
617 if (state->regs->SIMPLE_VLAN_REGISTERS) {
622 vlan_mask = state->vlan_ports[j];
623 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
627 for (i=0; i<MAX_PORTS; i++) {
628 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
629 int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
630 state->ports[i].pvid);
637 return update_flags(state);
639 // software reset: 30.0 = 0x175C
641 // reset ports 0,1,2,3,4
645 Uses only the VLAN port mask and the add tag mask to generate the other fields:
646 which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
648 static void correct_vlan_state(struct ip175c_state *state)
651 state->num_vlans = 0;
652 for (i=0; i<MAX_VLANS; i++) {
653 if (state->vlan_ports[i] != 0) {
654 state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
660 for (i=0; i<state->regs->NUM_PORTS; i++) {
661 unsigned int portmask = (1<<i);
662 if (!state->vlan_enabled) {
663 // share with everybody!
664 state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
667 state->ports[i].shareports = portmask;
668 for (j=0; j<MAX_VLANS; j++) {
669 if (state->vlan_ports[j] & portmask)
670 state->ports[i].shareports |= state->vlan_ports[j];
673 state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
676 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
678 struct ip175c_state *state = dev->priv;
681 err = get_state(state); // may be set in get_state.
684 val->value.i = state->vlan_enabled;
688 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
690 struct ip175c_state *state = dev->priv;
695 err = get_state(state);
698 enable = val->value.i;
700 if (state->vlan_enabled == enable) {
701 // do not change any state.
704 state->vlan_enabled = enable;
706 // Otherwise, if we are switching state, set fields to a known default.
707 state->remove_tag = 0x0000;
708 state->add_tag = 0x0000;
709 for (i = 0; i < MAX_PORTS; i++)
710 state->ports[i].shareports = 0xffff;
712 for (i = 0; i < MAX_VLANS; i++)
713 state->vlan_ports[i] = 0x0;
715 if (state->vlan_enabled) {
716 // updates other fields only based off vlan_ports and add_tag fields.
717 // Note that by default, no ports are in any vlans.
718 correct_vlan_state(state);
720 // ensure sane defaults?
721 return update_state(state);
724 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
726 struct ip175c_state *state = dev->priv;
732 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
735 err = get_state(state);
739 ports = state->vlan_ports[val->port_vlan];
742 while (b < MAX_PORTS) {
744 int istagged = ((state->add_tag >> b) & 1);
745 val->value.ports[ind].id = b;
746 val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
757 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
759 struct ip175c_state *state = dev->priv;
763 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
766 err = get_state(state);
770 state->vlan_ports[val->port_vlan] = 0;
771 for (i = 0; i < val->len; i++) {
772 int bitmask = (1<<val->value.ports[i].id);
773 state->vlan_ports[val->port_vlan] |= bitmask;
774 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
775 state->add_tag |= bitmask;
777 state->add_tag &= (~bitmask);
781 correct_vlan_state(state);
782 err = update_state(state);
787 static int ip175c_apply(struct switch_dev *dev)
789 struct ip175c_state *state = dev->priv;
792 err = get_flags(state);
796 if (REG_SUPP(state->regs->MII_REGISTER_EN)){
797 int val = getPhy(state, state->regs->MII_REGISTER_EN);
801 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
802 return setPhy(state, state->regs->MII_REGISTER_EN, val);
807 static int ip175c_reset(struct switch_dev *dev)
809 struct ip175c_state *state = dev->priv;
812 err = get_flags(state);
816 if (REG_SUPP(state->regs->RESET_REG)) {
817 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
820 err = getPhy(state, state->regs->RESET_REG);
822 /* data sheet specifies reset period is 2 msec
823 (don't see any mention of the 2ms delay in the IP178C spec, only
824 in IP175C, but it can't hurt.) */
828 if (REG_SUPP(state->regs->MODE_REG)) {
829 err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
832 err = getPhy(state, state->regs->MODE_REG);
835 /* reset switch ports */
836 for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
837 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
845 /*! get the current register number */
846 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
848 struct ip175c_state *state = dev->priv;
851 err = get_state(state);
855 if (state->add_tag & (1<<val->port_vlan)) {
856 if (state->remove_tag & (1<<val->port_vlan))
857 val->value.i = 3; // shouldn't ever happen.
861 if (state->remove_tag & (1<<val->port_vlan))
869 /*! set a new register address for low level access to registers */
870 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
872 struct ip175c_state *state = dev->priv;
875 err = get_state(state);
879 state->add_tag &= ~(1<<val->port_vlan);
880 state->remove_tag &= ~(1<<val->port_vlan);
882 if (val->value.i == 0)
883 state->remove_tag |= (1<<val->port_vlan);
884 if (val->value.i == 1)
885 state->add_tag |= (1<<val->port_vlan);
887 SET_PORT_BITS(state, state->add_tag,
888 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
889 SET_PORT_BITS(state, state->remove_tag,
890 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
896 /* low level /proc procedures */
898 /*! get the current phy address */
899 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
901 struct ip175c_state *state = dev->priv;
903 val->value.i = state->proc_mii.p;
907 /*! set a new phy address for low level access to registers */
908 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
910 struct ip175c_state *state = dev->priv;
911 int new_reg = val->value.i;
913 if (new_reg < 0 || new_reg > 31)
914 state->proc_mii.p = (u16)-1;
916 state->proc_mii.p = (u16)new_reg;
920 /*! get the current register number */
921 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
923 struct ip175c_state *state = dev->priv;
925 val->value.i = state->proc_mii.m;
929 /*! set a new register address for low level access to registers */
930 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
932 struct ip175c_state *state = dev->priv;
933 int new_reg = val->value.i;
935 if (new_reg < 0 || new_reg > 31)
936 state->proc_mii.m = (u16)-1;
938 state->proc_mii.m = (u16)new_reg;
942 /*! get the register content of state->proc_mii */
943 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
945 struct ip175c_state *state = dev->priv;
946 int retval = -EINVAL;
947 if (REG_SUPP(state->proc_mii))
948 retval = getPhy(state, state->proc_mii);
953 val->value.i = retval;
958 /*! write a value to the register defined by phy/reg above */
959 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
961 struct ip175c_state *state = dev->priv;
964 myval = val->value.i;
965 if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
966 err = setPhy(state, state->proc_mii, (u16)myval);
971 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
973 struct ip175c_state *state = dev->priv;
974 val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
979 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
981 struct ip175c_state *state = dev->priv;
982 int nr = val->port_vlan;
986 if (val->value.i == 100) {
989 } else if (val->value.i == 10) {
997 /* can't set speed for cpu port */
998 if (nr == state->regs->CPU_PORT)
1001 if (nr >= dev->ports || nr < 0)
1004 ctrl = ip_phy_read(state, nr, 0);
1010 ctrl |= (autoneg<<12);
1011 ctrl |= (speed<<13);
1013 return ip_phy_write(state, nr, 0, ctrl);
1016 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1018 struct ip175c_state *state = dev->priv;
1019 int nr = val->port_vlan;
1022 if (nr == state->regs->CPU_PORT) {
1027 if (nr >= dev->ports || nr < 0)
1030 status = ip_phy_read(state, nr, 1);
1031 speed = ip_phy_read(state, nr, 18);
1032 if (status < 0 || speed < 0)
1036 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1044 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1046 struct ip175c_state *state = dev->priv;
1047 int ctrl, speed, status;
1048 int nr = val->port_vlan;
1050 char *buf = state->buf; // fixed-length at 80.
1052 if (nr == state->regs->CPU_PORT) {
1053 sprintf(buf, "up, 100 Mbps, cpu port");
1058 if (nr >= dev->ports || nr < 0)
1061 ctrl = ip_phy_read(state, nr, 0);
1062 status = ip_phy_read(state, nr, 1);
1063 speed = ip_phy_read(state, nr, 18);
1064 if (ctrl < 0 || status < 0 || speed < 0)
1068 len = sprintf(buf, "up, %d Mbps, %s duplex",
1069 ((speed & (1<<11)) ? 100 : 10),
1070 ((speed & (1<<10)) ? "full" : "half"));
1072 len = sprintf(buf, "down");
1074 if (ctrl & (1<<12)) {
1075 len += sprintf(buf+len, ", auto-negotiate");
1076 if (!(status & (1<<5)))
1077 len += sprintf(buf+len, " (in progress)");
1079 len += sprintf(buf+len, ", fixed speed (%d)",
1080 ((ctrl & (1<<13)) ? 100 : 10));
1088 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1090 struct ip175c_state *state = dev->priv;
1092 *val = state->ports[port].pvid;
1096 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1098 struct ip175c_state *state = dev->priv;
1100 state->ports[port].pvid = val;
1102 if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
1105 return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
1119 IP175C_REGISTER_PHY,
1120 IP175C_REGISTER_MII,
1121 IP175C_REGISTER_VALUE,
1122 IP175C_REGISTER_ERRNO,
1125 static const struct switch_attr ip175c_global[] = {
1126 [IP175C_ENABLE_VLAN] = {
1127 .id = IP175C_ENABLE_VLAN,
1128 .type = SWITCH_TYPE_INT,
1129 .name = "enable_vlan",
1130 .description = "Flag to enable or disable VLANs and tagging",
1131 .get = ip175c_get_enable_vlan,
1132 .set = ip175c_set_enable_vlan,
1134 [IP175C_GET_NAME] = {
1135 .id = IP175C_GET_NAME,
1136 .type = SWITCH_TYPE_STRING,
1137 .description = "Returns the type of IC+ chip.",
1139 .get = ip175c_read_name,
1142 /* jal: added for low level debugging etc. */
1143 [IP175C_REGISTER_PHY] = {
1144 .id = IP175C_REGISTER_PHY,
1145 .type = SWITCH_TYPE_INT,
1146 .description = "Direct register access: set phy (0-4, or 29,30,31)",
1148 .get = ip175c_get_phy,
1149 .set = ip175c_set_phy,
1151 [IP175C_REGISTER_MII] = {
1152 .id = IP175C_REGISTER_MII,
1153 .type = SWITCH_TYPE_INT,
1154 .description = "Direct register access: set mii number (0-31)",
1156 .get = ip175c_get_reg,
1157 .set = ip175c_set_reg,
1159 [IP175C_REGISTER_VALUE] = {
1160 .id = IP175C_REGISTER_VALUE,
1161 .type = SWITCH_TYPE_INT,
1162 .description = "Direct register access: read/write to register (0-65535)",
1164 .get = ip175c_get_val,
1165 .set = ip175c_set_val,
1169 static const struct switch_attr ip175c_vlan[] = {
1172 static const struct switch_attr ip175c_port[] = {
1173 [IP175C_PORT_STATUS] = {
1174 .id = IP175C_PORT_STATUS,
1175 .type = SWITCH_TYPE_STRING,
1176 .description = "Returns Detailed port status",
1178 .get = ip175c_get_port_status,
1181 [IP175C_PORT_LINK] = {
1182 .id = IP175C_PORT_LINK,
1183 .type = SWITCH_TYPE_INT,
1184 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1186 .get = ip175c_get_port_speed,
1187 .set = ip175c_set_port_speed,
1189 [IP175C_PORT_TAGGED] = {
1190 .id = IP175C_PORT_LINK,
1191 .type = SWITCH_TYPE_INT,
1192 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1194 .get = ip175c_get_tagged,
1195 .set = ip175c_set_tagged,
1199 static int ip175c_probe(struct phy_device *pdev)
1201 struct ip175c_state *state;
1202 struct switch_dev *dev;
1205 /* we only attach to PHY 0, but use all available PHYs */
1206 if (pdev->addr != 0)
1209 state = kzalloc(sizeof(*state), GFP_KERNEL);
1214 dev->attr_global.attr = ip175c_global;
1215 dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1216 dev->attr_port.attr = ip175c_port;
1217 dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1218 dev->attr_vlan.attr = ip175c_vlan;
1219 dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1221 dev->get_port_pvid = ip175c_get_pvid;
1222 dev->set_port_pvid = ip175c_set_pvid;
1223 dev->get_vlan_ports = ip175c_get_ports;
1224 dev->set_vlan_ports = ip175c_set_ports;
1225 dev->apply_config = ip175c_apply;
1226 dev->reset_switch = ip175c_reset;
1230 state->mii_bus = pdev->bus;
1232 err = get_model(state);
1236 dev->vlans = MAX_VLANS;
1237 dev->cpu_port = state->regs->CPU_PORT;
1238 dev->ports = state->regs->NUM_PORTS;
1239 dev->name = state->regs->NAME;
1248 static int ip175c_config_init(struct phy_device *pdev)
1250 struct ip175c_state *state = pdev->priv;
1251 struct net_device *dev = pdev->attached_dev;
1254 pdev->irq = PHY_IGNORE_INTERRUPT;
1255 err = register_switch(&state->dev, dev);
1259 ip175c_reset(&state->dev);
1261 state->registered = true;
1262 netif_carrier_on(pdev->attached_dev);
1267 static void ip175c_remove(struct phy_device *pdev)
1269 struct ip175c_state *state = pdev->priv;
1271 if (state->registered)
1272 unregister_switch(&state->dev);
1276 static int ip175c_config_aneg(struct phy_device *pdev)
1281 static int ip175c_read_status(struct phy_device *pdev)
1283 pdev->speed = SPEED_100;
1284 pdev->duplex = DUPLEX_FULL;
1285 pdev->pause = pdev->asym_pause = 0;
1289 static struct phy_driver ip175c_driver = {
1290 .name = "IC+ IP175C",
1291 .phy_id = 0x02430d80,
1292 .phy_id_mask = 0x0ffffff0,
1293 .features = PHY_BASIC_FEATURES,
1294 .probe = ip175c_probe,
1295 .remove = ip175c_remove,
1296 .config_init = ip175c_config_init,
1297 .config_aneg = ip175c_config_aneg,
1298 .read_status = ip175c_read_status,
1299 .driver = { .owner = THIS_MODULE },
1302 static struct phy_driver ip175a_driver = {
1303 .name = "IC+ IP175A",
1304 .phy_id = 0x02430c50,
1305 .phy_id_mask = 0x0ffffff0,
1306 .features = PHY_BASIC_FEATURES,
1307 .probe = ip175c_probe,
1308 .remove = ip175c_remove,
1309 .config_init = ip175c_config_init,
1310 .config_aneg = ip175c_config_aneg,
1311 .read_status = ip175c_read_status,
1312 .driver = { .owner = THIS_MODULE },
1316 int __init ip175c_init(void)
1320 ret = phy_driver_register(&ip175a_driver);
1324 return phy_driver_register(&ip175c_driver);
1327 void __exit ip175c_exit(void)
1329 phy_driver_unregister(&ip175c_driver);
1330 phy_driver_unregister(&ip175a_driver);
1333 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1334 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1335 MODULE_LICENSE("GPL");
1337 module_init(ip175c_init);
1338 module_exit(ip175c_exit);