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 // Only programmable via EEPROM
205 .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
206 .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
207 .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
208 .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
210 .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
211 .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
212 .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
215 .RESET_REG = NOTSUPPORTED,
217 .MODE_REG = NOTSUPPORTED,
219 .ROUTER_CONTROL_REG = NOTSUPPORTED,
220 .VLAN_CONTROL_REG = NOTSUPPORTED,
223 .NUMLAN_GROUPS_MAX = -1,
224 .NUMLAN_GROUPS_BIT = -1, // {0-2}
229 .MII_REGISTER_EN = {0, 18},
230 .MII_REGISTER_EN_BIT = 7,
234 struct ip175c_state {
235 struct switch_dev dev;
236 struct mii_bus *mii_bus;
239 int router_mode; // ROUTER_EN
240 int vlan_enabled; // TAG_VLAN_EN
243 unsigned int shareports;
245 unsigned int add_tag;
246 unsigned int remove_tag;
248 unsigned int vlan_ports[MAX_VLANS];
249 const struct register_mappings *regs;
250 reg proc_mii; // phy/reg for the low level register access via swconfig
256 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
258 int val = mdiobus_read(state->mii_bus, port, reg);
260 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
263 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
268 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
273 pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
275 err = mdiobus_write(state->mii_bus, port, reg, val);
277 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
281 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
283 int val = ip_phy_read(state, port, reg);
286 return ip_phy_write(state, port, reg, (val & ~mask) | data);
289 static int getPhy(struct ip175c_state *state, reg mii)
293 return ip_phy_read(state, mii.p, mii.m);
296 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
302 err = ip_phy_write(state, mii.p, mii.m, value);
311 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
312 * NOTE: these macros will return if there is an error!
315 #define GET_PORT_BITS(state, bits, addr, bit_lookup) \
317 int i, val = getPhy((state), (addr)); \
321 for (i = 0; i < MAX_PORTS; i++) { \
322 if ((bit_lookup)[i] == -1) continue; \
323 if (val & (1<<(bit_lookup)[i])) \
328 #define SET_PORT_BITS(state, bits, addr, bit_lookup) \
330 int i, val = getPhy((state), (addr)); \
333 for (i = 0; i < MAX_PORTS; i++) { \
334 unsigned int newmask = ((bits)&(1<<i)); \
335 if ((bit_lookup)[i] == -1) continue; \
336 val &= ~(1<<(bit_lookup)[i]); \
337 val |= ((newmask>>i)<<(bit_lookup)[i]); \
339 val = setPhy((state), (addr), val); \
345 static int get_model(struct ip175c_state *state)
347 reg oui_id_reg = {0, 2};
349 reg model_no_reg = {0, 3};
350 int model_no, model_no_orig;
352 // 175 and 178 have the same oui ID.
353 reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
356 oui_id = getPhy(state, oui_id_reg);
357 if (oui_id != 0x0243) {
359 return -ENODEV; // Not a IC+ chip.
361 oui_id = getPhy(state, oui_id_reg_178c);
362 if (oui_id == 0x0243) {
366 model_no_orig = getPhy(state, model_no_reg);
367 if (model_no_orig < 0) {
370 model_no = model_no_orig >> 4; // shift out revision number.
371 model_no &= 0x3f; // only take the model number (low 6 bits).
372 if (model_no == IP175A.MODEL_NO) {
373 state->regs = &IP175A;
374 } else if (model_no == IP175C.MODEL_NO) {
376 state->regs = &IP178C;
378 state->regs = &IP175C;
381 printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
387 /** Get only the vlan and router flags on the router **/
388 static int get_flags(struct ip175c_state *state)
392 state->router_mode = 0;
393 state->vlan_enabled = -1; // hack
394 state->num_vlans = 0;
396 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
397 return 0; // not an error if it doesn't support enable vlan.
400 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
404 if (state->regs->ROUTER_EN_BIT >= 0)
405 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
407 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
408 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
409 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
410 state->num_vlans+=1; // does not include WAN.
413 val = getPhy(state, state->regs->VLAN_CONTROL_REG);
417 if (state->regs->TAG_VLAN_BIT >= 0)
418 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
423 /** Get all state variables for VLAN mappings and port-based tagging **/
424 static int get_state(struct ip175c_state *state)
428 ret = get_flags(state);
432 GET_PORT_BITS(state, state->remove_tag,
433 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
434 GET_PORT_BITS(state, state->add_tag,
435 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
437 if (state->vlan_enabled == -1) {
438 // not sure how to get this...
439 state->vlan_enabled = (state->remove_tag || state->add_tag);
442 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
443 for (j=0; j<MAX_PORTS; j++) {
444 state->ports[j].shareports = 0; // initialize them in case.
446 for (j=0; j<state->regs->NUM_PORTS; j++) {
448 const bitnum *bit_lookup = (j%2==0)?
449 state->regs->VLAN_LOOKUP_EVEN_BIT:
450 state->regs->VLAN_LOOKUP_ODD_BIT;
451 addr = state->regs->VLAN_LOOKUP_REG;
452 if (state->regs->SIMPLE_VLAN_REGISTERS) {
467 addr = state->regs->VLAN_LOOKUP_REG_5;
472 if (REG_SUPP(addr)) {
473 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
477 for (j=0; j<MAX_PORTS; j++) {
478 state->ports[j].shareports = 0xff;
482 for (i=0; i<MAX_PORTS; i++) {
483 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
484 int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
488 state->ports[i].pvid = val;
490 state->ports[i].pvid = 0;
494 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
495 for (j=0; j<MAX_VLANS; j++) {
496 reg addr = state->regs->TAG_VLAN_MASK_REG;
497 const bitnum *bit_lookup = (j%2==0)?
498 state->regs->TAG_VLAN_MASK_EVEN_BIT:
499 state->regs->TAG_VLAN_MASK_ODD_BIT;
500 if (state->regs->SIMPLE_VLAN_REGISTERS) {
505 GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
508 for (j=0; j<MAX_VLANS; j++) {
509 state->vlan_ports[j] = 0;
510 for (i=0; i<state->regs->NUM_PORTS; i++) {
511 if ((state->ports[i].pvid == j) ||
512 (state->ports[i].pvid == 0)) {
513 state->vlan_ports[j] |= (1<<i);
522 /** Only update vlan and router flags in the switch **/
523 static int update_flags(struct ip175c_state *state)
527 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
531 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
535 if (state->regs->ROUTER_EN_BIT >= 0) {
536 if (state->router_mode) {
537 val |= (1<<state->regs->ROUTER_EN_BIT);
539 val &= (~(1<<state->regs->ROUTER_EN_BIT));
542 if (state->regs->TAG_VLAN_BIT >= 0) {
543 if (state->vlan_enabled) {
544 val |= (1<<state->regs->TAG_VLAN_BIT);
546 val &= (~(1<<state->regs->TAG_VLAN_BIT));
549 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
550 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
551 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
552 val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
553 } else if (state->num_vlans >= 1) {
554 val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
557 return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
560 /** Update all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
561 static int update_state(struct ip175c_state *state)
565 SET_PORT_BITS(state, state->add_tag,
566 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
567 SET_PORT_BITS(state, state->remove_tag,
568 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
570 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
571 for (j=0; j<state->regs->NUM_PORTS; j++) {
573 const bitnum *bit_lookup = (j%2==0)?
574 state->regs->VLAN_LOOKUP_EVEN_BIT:
575 state->regs->VLAN_LOOKUP_ODD_BIT;
577 // duplicate code -- sorry
578 addr = state->regs->VLAN_LOOKUP_REG;
579 if (state->regs->SIMPLE_VLAN_REGISTERS) {
594 addr = state->regs->VLAN_LOOKUP_REG_5;
597 addr.m = -1; // shouldn't get here, but...
601 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
602 if (REG_SUPP(addr)) {
603 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
607 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
608 for (j=0; j<MAX_VLANS; j++) {
609 reg addr = state->regs->TAG_VLAN_MASK_REG;
610 const bitnum *bit_lookup = (j%2==0)?
611 state->regs->TAG_VLAN_MASK_EVEN_BIT:
612 state->regs->TAG_VLAN_MASK_ODD_BIT;
613 unsigned int vlan_mask;
614 if (state->regs->SIMPLE_VLAN_REGISTERS) {
619 vlan_mask = state->vlan_ports[j];
620 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
624 for (i=0; i<MAX_PORTS; i++) {
625 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
626 int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
627 state->ports[i].pvid);
634 return update_flags(state);
638 * Uses only the VLAN port mask and the add tag mask to generate the other fields:
639 * which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
641 static void correct_vlan_state(struct ip175c_state *state)
644 state->num_vlans = 0;
645 for (i=0; i<MAX_VLANS; i++) {
646 if (state->vlan_ports[i] != 0) {
647 state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
651 for (i=0; i<state->regs->NUM_PORTS; i++) {
652 unsigned int portmask = (1<<i);
653 if (!state->vlan_enabled) {
654 // Share with everybody!
655 state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
658 state->ports[i].shareports = portmask;
659 for (j=0; j<MAX_VLANS; j++) {
660 if (state->vlan_ports[j] & portmask)
661 state->ports[i].shareports |= state->vlan_ports[j];
664 state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
667 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
669 struct ip175c_state *state = dev->priv;
672 err = get_state(state); // May be set in get_state.
675 val->value.i = state->vlan_enabled;
679 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
681 struct ip175c_state *state = dev->priv;
686 err = get_state(state);
689 enable = val->value.i;
691 if (state->vlan_enabled == enable) {
692 // Do not change any state.
695 state->vlan_enabled = enable;
697 // Otherwise, if we are switching state, set fields to a known default.
698 state->remove_tag = 0x0000;
699 state->add_tag = 0x0000;
700 for (i = 0; i < MAX_PORTS; i++)
701 state->ports[i].shareports = 0xffff;
703 for (i = 0; i < MAX_VLANS; i++)
704 state->vlan_ports[i] = 0x0;
706 if (state->vlan_enabled) {
707 // Updates other fields only based off vlan_ports and add_tag fields.
708 // Note that by default, no ports are in any vlans.
709 correct_vlan_state(state);
711 // Ensure sane defaults?
712 return update_state(state);
715 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
717 struct ip175c_state *state = dev->priv;
723 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
726 err = get_state(state);
730 ports = state->vlan_ports[val->port_vlan];
733 while (b < MAX_PORTS) {
735 int istagged = ((state->add_tag >> b) & 1);
736 val->value.ports[ind].id = b;
737 val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
748 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
750 struct ip175c_state *state = dev->priv;
754 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
757 err = get_state(state);
761 state->vlan_ports[val->port_vlan] = 0;
762 for (i = 0; i < val->len; i++) {
763 int bitmask = (1<<val->value.ports[i].id);
764 state->vlan_ports[val->port_vlan] |= bitmask;
765 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
766 state->add_tag |= bitmask;
768 state->add_tag &= (~bitmask);
772 correct_vlan_state(state);
773 err = update_state(state);
778 static int ip175c_apply(struct switch_dev *dev)
780 struct ip175c_state *state = dev->priv;
783 err = get_flags(state);
787 if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
788 int val = getPhy(state, state->regs->MII_REGISTER_EN);
792 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
793 return setPhy(state, state->regs->MII_REGISTER_EN, val);
798 static int ip175c_reset(struct switch_dev *dev)
800 struct ip175c_state *state = dev->priv;
803 err = get_flags(state);
807 if (REG_SUPP(state->regs->RESET_REG)) {
808 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
811 err = getPhy(state, state->regs->RESET_REG);
814 * Data sheet specifies reset period to be 2 msec.
815 * (I don't see any mention of the 2ms delay in the IP178C spec, only
816 * in IP175C, but it can't hurt.)
821 if (REG_SUPP(state->regs->MODE_REG)) {
822 err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
825 err = getPhy(state, state->regs->MODE_REG);
828 /* reset switch ports */
829 for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
830 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
838 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
840 struct ip175c_state *state = dev->priv;
843 err = get_state(state);
847 if (state->add_tag & (1<<val->port_vlan)) {
848 if (state->remove_tag & (1<<val->port_vlan))
849 val->value.i = 3; // shouldn't ever happen.
853 if (state->remove_tag & (1<<val->port_vlan))
861 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
863 struct ip175c_state *state = dev->priv;
866 err = get_state(state);
870 state->add_tag &= ~(1<<val->port_vlan);
871 state->remove_tag &= ~(1<<val->port_vlan);
873 if (val->value.i == 0)
874 state->remove_tag |= (1<<val->port_vlan);
875 if (val->value.i == 1)
876 state->add_tag |= (1<<val->port_vlan);
878 SET_PORT_BITS(state, state->add_tag,
879 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
880 SET_PORT_BITS(state, state->remove_tag,
881 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
886 /** Get the current phy address */
887 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
889 struct ip175c_state *state = dev->priv;
891 val->value.i = state->proc_mii.p;
895 /** Set a new phy address for low level access to registers */
896 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
898 struct ip175c_state *state = dev->priv;
899 int new_reg = val->value.i;
901 if (new_reg < 0 || new_reg > 31)
902 state->proc_mii.p = (u16)-1;
904 state->proc_mii.p = (u16)new_reg;
908 /** Get the current register number */
909 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
911 struct ip175c_state *state = dev->priv;
913 val->value.i = state->proc_mii.m;
917 /** Set a new register address for low level access to registers */
918 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
920 struct ip175c_state *state = dev->priv;
921 int new_reg = val->value.i;
923 if (new_reg < 0 || new_reg > 31)
924 state->proc_mii.m = (u16)-1;
926 state->proc_mii.m = (u16)new_reg;
930 /** Get the register content of state->proc_mii */
931 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
933 struct ip175c_state *state = dev->priv;
934 int retval = -EINVAL;
935 if (REG_SUPP(state->proc_mii))
936 retval = getPhy(state, state->proc_mii);
941 val->value.i = retval;
946 /** Write a value to the register defined by phy/reg above */
947 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
949 struct ip175c_state *state = dev->priv;
950 int myval, err = -EINVAL;
952 myval = val->value.i;
953 if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
954 err = setPhy(state, state->proc_mii, (u16)myval);
959 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
961 struct ip175c_state *state = dev->priv;
962 val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
966 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
968 struct ip175c_state *state = dev->priv;
969 int nr = val->port_vlan;
973 if (val->value.i == 100) {
976 } else if (val->value.i == 10) {
984 /* Can't set speed for cpu port */
985 if (nr == state->regs->CPU_PORT)
988 if (nr >= dev->ports || nr < 0)
991 ctrl = ip_phy_read(state, nr, 0);
997 ctrl |= (autoneg<<12);
1000 return ip_phy_write(state, nr, 0, ctrl);
1003 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1005 struct ip175c_state *state = dev->priv;
1006 int nr = val->port_vlan;
1009 if (nr == state->regs->CPU_PORT) {
1014 if (nr >= dev->ports || nr < 0)
1017 status = ip_phy_read(state, nr, 1);
1018 speed = ip_phy_read(state, nr, 18);
1019 if (status < 0 || speed < 0)
1023 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1030 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1032 struct ip175c_state *state = dev->priv;
1033 int ctrl, speed, status;
1034 int nr = val->port_vlan;
1036 char *buf = state->buf; // fixed-length at 80.
1038 if (nr == state->regs->CPU_PORT) {
1039 sprintf(buf, "up, 100 Mbps, cpu port");
1044 if (nr >= dev->ports || nr < 0)
1047 ctrl = ip_phy_read(state, nr, 0);
1048 status = ip_phy_read(state, nr, 1);
1049 speed = ip_phy_read(state, nr, 18);
1050 if (ctrl < 0 || status < 0 || speed < 0)
1054 len = sprintf(buf, "up, %d Mbps, %s duplex",
1055 ((speed & (1<<11)) ? 100 : 10),
1056 ((speed & (1<<10)) ? "full" : "half"));
1058 len = sprintf(buf, "down");
1060 if (ctrl & (1<<12)) {
1061 len += sprintf(buf+len, ", auto-negotiate");
1062 if (!(status & (1<<5)))
1063 len += sprintf(buf+len, " (in progress)");
1065 len += sprintf(buf+len, ", fixed speed (%d)",
1066 ((ctrl & (1<<13)) ? 100 : 10));
1074 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1076 struct ip175c_state *state = dev->priv;
1078 *val = state->ports[port].pvid;
1082 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1084 struct ip175c_state *state = dev->priv;
1086 state->ports[port].pvid = val;
1088 if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
1091 return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
1105 IP175C_REGISTER_PHY,
1106 IP175C_REGISTER_MII,
1107 IP175C_REGISTER_VALUE,
1108 IP175C_REGISTER_ERRNO,
1111 static const struct switch_attr ip175c_global[] = {
1112 [IP175C_ENABLE_VLAN] = {
1113 .id = IP175C_ENABLE_VLAN,
1114 .type = SWITCH_TYPE_INT,
1115 .name = "enable_vlan",
1116 .description = "Flag to enable or disable VLANs and tagging",
1117 .get = ip175c_get_enable_vlan,
1118 .set = ip175c_set_enable_vlan,
1120 [IP175C_GET_NAME] = {
1121 .id = IP175C_GET_NAME,
1122 .type = SWITCH_TYPE_STRING,
1123 .description = "Returns the type of IC+ chip.",
1125 .get = ip175c_read_name,
1128 /* jal: added for low level debugging etc. */
1129 [IP175C_REGISTER_PHY] = {
1130 .id = IP175C_REGISTER_PHY,
1131 .type = SWITCH_TYPE_INT,
1132 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1134 .get = ip175c_get_phy,
1135 .set = ip175c_set_phy,
1137 [IP175C_REGISTER_MII] = {
1138 .id = IP175C_REGISTER_MII,
1139 .type = SWITCH_TYPE_INT,
1140 .description = "Direct register access: set MII register number (0-31)",
1142 .get = ip175c_get_reg,
1143 .set = ip175c_set_reg,
1145 [IP175C_REGISTER_VALUE] = {
1146 .id = IP175C_REGISTER_VALUE,
1147 .type = SWITCH_TYPE_INT,
1148 .description = "Direct register access: read/write to register (0-65535)",
1150 .get = ip175c_get_val,
1151 .set = ip175c_set_val,
1155 static const struct switch_attr ip175c_vlan[] = {
1158 static const struct switch_attr ip175c_port[] = {
1159 [IP175C_PORT_STATUS] = {
1160 .id = IP175C_PORT_STATUS,
1161 .type = SWITCH_TYPE_STRING,
1162 .description = "Returns Detailed port status",
1164 .get = ip175c_get_port_status,
1167 [IP175C_PORT_LINK] = {
1168 .id = IP175C_PORT_LINK,
1169 .type = SWITCH_TYPE_INT,
1170 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1172 .get = ip175c_get_port_speed,
1173 .set = ip175c_set_port_speed,
1175 [IP175C_PORT_TAGGED] = {
1176 .id = IP175C_PORT_LINK,
1177 .type = SWITCH_TYPE_INT,
1178 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1180 .get = ip175c_get_tagged,
1181 .set = ip175c_set_tagged,
1185 static int ip175c_probe(struct phy_device *pdev)
1187 struct ip175c_state *state;
1188 struct switch_dev *dev;
1191 /* We only attach to PHY 0, but use all available PHYs */
1192 if (pdev->addr != 0)
1195 state = kzalloc(sizeof(*state), GFP_KERNEL);
1200 dev->attr_global.attr = ip175c_global;
1201 dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1202 dev->attr_port.attr = ip175c_port;
1203 dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1204 dev->attr_vlan.attr = ip175c_vlan;
1205 dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1207 dev->get_port_pvid = ip175c_get_pvid;
1208 dev->set_port_pvid = ip175c_set_pvid;
1209 dev->get_vlan_ports = ip175c_get_ports;
1210 dev->set_vlan_ports = ip175c_set_ports;
1211 dev->apply_config = ip175c_apply;
1212 dev->reset_switch = ip175c_reset;
1216 state->mii_bus = pdev->bus;
1218 err = get_model(state);
1222 dev->vlans = MAX_VLANS;
1223 dev->cpu_port = state->regs->CPU_PORT;
1224 dev->ports = state->regs->NUM_PORTS;
1225 dev->name = state->regs->NAME;
1234 static int ip175c_config_init(struct phy_device *pdev)
1236 struct ip175c_state *state = pdev->priv;
1237 struct net_device *dev = pdev->attached_dev;
1240 pdev->irq = PHY_IGNORE_INTERRUPT;
1241 err = register_switch(&state->dev, dev);
1245 ip175c_reset(&state->dev);
1247 state->registered = true;
1248 netif_carrier_on(pdev->attached_dev);
1253 static void ip175c_remove(struct phy_device *pdev)
1255 struct ip175c_state *state = pdev->priv;
1257 if (state->registered)
1258 unregister_switch(&state->dev);
1262 static int ip175c_config_aneg(struct phy_device *pdev)
1267 static int ip175c_read_status(struct phy_device *pdev)
1269 pdev->speed = SPEED_100;
1270 pdev->duplex = DUPLEX_FULL;
1271 pdev->pause = pdev->asym_pause = 0;
1275 static struct phy_driver ip175c_driver = {
1276 .name = "IC+ IP175C",
1277 .phy_id = 0x02430d80,
1278 .phy_id_mask = 0x0ffffff0,
1279 .features = PHY_BASIC_FEATURES,
1280 .probe = ip175c_probe,
1281 .remove = ip175c_remove,
1282 .config_init = ip175c_config_init,
1283 .config_aneg = ip175c_config_aneg,
1284 .read_status = ip175c_read_status,
1285 .driver = { .owner = THIS_MODULE },
1288 static struct phy_driver ip175a_driver = {
1289 .name = "IC+ IP175A",
1290 .phy_id = 0x02430c50,
1291 .phy_id_mask = 0x0ffffff0,
1292 .features = PHY_BASIC_FEATURES,
1293 .probe = ip175c_probe,
1294 .remove = ip175c_remove,
1295 .config_init = ip175c_config_init,
1296 .config_aneg = ip175c_config_aneg,
1297 .read_status = ip175c_read_status,
1298 .driver = { .owner = THIS_MODULE },
1302 int __init ip175c_init(void)
1306 ret = phy_driver_register(&ip175a_driver);
1310 return phy_driver_register(&ip175c_driver);
1313 void __exit ip175c_exit(void)
1315 phy_driver_unregister(&ip175c_driver);
1316 phy_driver_unregister(&ip175a_driver);
1319 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1320 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1321 MODULE_LICENSE("GPL");
1323 module_init(ip175c_init);
1324 module_exit(ip175c_exit);