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>
28 #include <linux/device.h>
34 typedef struct ip175c_reg {
40 #define NOTSUPPORTED {-1,-1}
42 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
46 /*********** CONSTANTS ***********/
47 struct register_mappings {
49 u16 MODEL_NO; // Compare to bits 4-9 of MII register 0,3.
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];
58 /* These ports are tagged.
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];
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}
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];
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];
90 reg ROUTER_CONTROL_REG;
94 bitnum NUMLAN_GROUPS_MAX;
95 bitnum NUMLAN_GROUPS_BIT;
98 bitnum MII_REGISTER_EN_BIT;
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.
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);
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);
117 static const struct register_mappings IP178C = {
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},
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},
130 .SIMPLE_VLAN_REGISTERS = 1,
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},
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},
144 .MODE_REG = NOTSUPPORTED,
146 .ROUTER_CONTROL_REG = {30,30},
148 .NUMLAN_GROUPS_MAX = 8,
149 .NUMLAN_GROUPS_BIT = 8, // {0-2}
151 .VLAN_CONTROL_REG = {30,13},
157 .MII_REGISTER_EN = NOTSUPPORTED,
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,
166 static const struct register_mappings IP175C = {
169 .VLAN_DEFAULT_TAG_REG = {
170 {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
171 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
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},
179 .SIMPLE_VLAN_REGISTERS = 0,
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},
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},
195 .ROUTER_CONTROL_REG = {30,9},
197 .NUMLAN_GROUPS_MAX = 8,
198 .NUMLAN_GROUPS_BIT = 0, // {0-2}
200 .VLAN_CONTROL_REG = {30,9},
206 .MII_REGISTER_EN = NOTSUPPORTED,
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,
215 static const struct register_mappings IP175A = {
218 .VLAN_DEFAULT_TAG_REG = {
219 {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
220 NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
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},
228 .SIMPLE_VLAN_REGISTERS = 0,
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},
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},
241 .RESET_REG = NOTSUPPORTED,
243 .MODE_REG = NOTSUPPORTED,
245 .ROUTER_CONTROL_REG = NOTSUPPORTED,
246 .VLAN_CONTROL_REG = NOTSUPPORTED,
249 .NUMLAN_GROUPS_MAX = -1,
250 .NUMLAN_GROUPS_BIT = -1, // {0-2}
255 .MII_REGISTER_EN = {0, 18},
256 .MII_REGISTER_EN_BIT = 7,
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,
266 struct ip175c_state {
267 struct switch_dev dev;
268 struct mii_bus *mii_bus;
271 int router_mode; // ROUTER_EN
272 int vlan_enabled; // TAG_VLAN_EN
275 unsigned int shareports;
277 unsigned int add_tag;
278 unsigned int remove_tag;
282 unsigned int tag; // VLAN tag (IP175D only)
284 const struct register_mappings *regs;
285 reg proc_mii; // phy/reg for the low level register access via swconfig
291 static int ip_phy_read(struct ip175c_state *state, int port, int reg)
293 int val = mdiobus_read(state->mii_bus, port, reg);
295 pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
298 pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
303 static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
308 pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
310 err = mdiobus_write(state->mii_bus, port, reg, val);
312 pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
316 static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
318 int val = ip_phy_read(state, port, reg);
321 return ip_phy_write(state, port, reg, (val & ~mask) | data);
324 static int getPhy(struct ip175c_state *state, reg mii)
328 return ip_phy_read(state, mii.p, mii.m);
331 static int setPhy(struct ip175c_state *state, reg mii, u16 value)
337 err = ip_phy_write(state, mii.p, mii.m, value);
346 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
347 * NOTE: these macros will return if there is an error!
350 #define GET_PORT_BITS(state, bits, addr, bit_lookup) \
352 int i, val = getPhy((state), (addr)); \
356 for (i = 0; i < MAX_PORTS; i++) { \
357 if ((bit_lookup)[i] == -1) continue; \
358 if (val & (1<<(bit_lookup)[i])) \
363 #define SET_PORT_BITS(state, bits, addr, bit_lookup) \
365 int i, val = getPhy((state), (addr)); \
368 for (i = 0; i < MAX_PORTS; i++) { \
369 unsigned int newmask = ((bits)&(1<<i)); \
370 if ((bit_lookup)[i] == -1) continue; \
371 val &= ~(1<<(bit_lookup)[i]); \
372 val |= ((newmask>>i)<<(bit_lookup)[i]); \
374 val = setPhy((state), (addr), val); \
380 static int get_model(struct ip175c_state *state)
383 int oui_id, model_no, rev_no, chip_no;
385 id1 = ip_phy_read(state, 0, 2);
386 id2 = ip_phy_read(state, 0, 3);
387 oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
388 model_no = (id2 >> 4) & 0x3f;
390 pr_debug("IP175C: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
392 if (oui_id != 0x0090c3) // No other oui_id should have reached us anyway
395 if (model_no == IP175A.MODEL_NO) {
396 state->regs = &IP175A;
397 } else if (model_no == IP175C.MODEL_NO) {
399 * Several models share the same model_no:
400 * 178C has more PHYs, so we try whether the device responds to a read from PHY5
401 * 175D has a new chip ID register
404 if (ip_phy_read(state, 5, 2) == 0x0243) {
405 state->regs = &IP178C;
407 chip_no = ip_phy_read(state, 20, 0);
408 pr_debug("IP175C: Chip ID register reads %04x\n", chip_no);
409 if (chip_no == 0x175d) {
410 state->regs = &IP175C;
412 state->regs = &IP175C;
416 pr_warning("IP175C: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
422 /** Get only the vlan and router flags on the router **/
423 static int ip175c_get_flags(struct ip175c_state *state)
427 state->router_mode = 0;
428 state->vlan_enabled = -1; // hack
429 state->num_vlans = 0;
431 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
432 return 0; // not an error if it doesn't support enable vlan.
435 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
439 if (state->regs->ROUTER_EN_BIT >= 0)
440 state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
442 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
443 state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
444 state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
445 state->num_vlans+=1; // does not include WAN.
448 val = getPhy(state, state->regs->VLAN_CONTROL_REG);
452 if (state->regs->TAG_VLAN_BIT >= 0)
453 state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
458 /** Get all state variables for VLAN mappings and port-based tagging **/
459 static int ip175c_get_state(struct ip175c_state *state)
464 ret = ip175c_get_flags(state);
469 GET_PORT_BITS(state, state->remove_tag,
470 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
471 GET_PORT_BITS(state, state->add_tag,
472 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
474 if (state->vlan_enabled == -1) {
475 // not sure how to get this...
476 state->vlan_enabled = (state->remove_tag || state->add_tag);
479 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
480 for (j=0; j<MAX_PORTS; j++) {
481 state->ports[j].shareports = 0; // initialize them in case.
483 for (j=0; j<state->regs->NUM_PORTS; j++) {
485 const bitnum *bit_lookup = (j%2==0)?
486 state->regs->VLAN_LOOKUP_EVEN_BIT:
487 state->regs->VLAN_LOOKUP_ODD_BIT;
488 addr = state->regs->VLAN_LOOKUP_REG;
489 if (state->regs->SIMPLE_VLAN_REGISTERS) {
504 addr = state->regs->VLAN_LOOKUP_REG_5;
509 if (REG_SUPP(addr)) {
510 GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
514 for (j=0; j<MAX_PORTS; j++) {
515 state->ports[j].shareports = 0xff;
519 for (i=0; i<MAX_PORTS; i++) {
520 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
521 int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
525 state->ports[i].pvid = val;
527 state->ports[i].pvid = 0;
531 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
532 for (j=0; j<MAX_VLANS; j++) {
533 reg addr = state->regs->TAG_VLAN_MASK_REG;
534 const bitnum *bit_lookup = (j%2==0)?
535 state->regs->TAG_VLAN_MASK_EVEN_BIT:
536 state->regs->TAG_VLAN_MASK_ODD_BIT;
537 if (state->regs->SIMPLE_VLAN_REGISTERS) {
542 GET_PORT_BITS(state, state->vlans[j].ports, addr, bit_lookup);
545 for (j=0; j<MAX_VLANS; j++) {
546 state->vlans[j].ports = 0;
547 for (i=0; i<state->regs->NUM_PORTS; i++) {
548 if ((state->ports[i].pvid == j) ||
549 (state->ports[i].pvid == 0)) {
550 state->vlans[j].ports |= (1<<i);
559 /** Only set vlan and router flags in the switch **/
560 static int ip175c_set_flags(struct ip175c_state *state)
564 if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
568 val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
572 if (state->regs->ROUTER_EN_BIT >= 0) {
573 if (state->router_mode) {
574 val |= (1<<state->regs->ROUTER_EN_BIT);
576 val &= (~(1<<state->regs->ROUTER_EN_BIT));
579 if (state->regs->TAG_VLAN_BIT >= 0) {
580 if (state->vlan_enabled) {
581 val |= (1<<state->regs->TAG_VLAN_BIT);
583 val &= (~(1<<state->regs->TAG_VLAN_BIT));
586 if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
587 val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
588 if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
589 val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
590 } else if (state->num_vlans >= 1) {
591 val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
594 return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
597 /** Set all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
598 static int ip175c_set_state(struct ip175c_state *state)
602 SET_PORT_BITS(state, state->add_tag,
603 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
604 SET_PORT_BITS(state, state->remove_tag,
605 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
607 if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
608 for (j=0; j<state->regs->NUM_PORTS; j++) {
610 const bitnum *bit_lookup = (j%2==0)?
611 state->regs->VLAN_LOOKUP_EVEN_BIT:
612 state->regs->VLAN_LOOKUP_ODD_BIT;
614 // duplicate code -- sorry
615 addr = state->regs->VLAN_LOOKUP_REG;
616 if (state->regs->SIMPLE_VLAN_REGISTERS) {
631 addr = state->regs->VLAN_LOOKUP_REG_5;
634 addr.m = -1; // shouldn't get here, but...
638 //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
639 if (REG_SUPP(addr)) {
640 SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
644 if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
645 for (j=0; j<MAX_VLANS; j++) {
646 reg addr = state->regs->TAG_VLAN_MASK_REG;
647 const bitnum *bit_lookup = (j%2==0)?
648 state->regs->TAG_VLAN_MASK_EVEN_BIT:
649 state->regs->TAG_VLAN_MASK_ODD_BIT;
650 unsigned int vlan_mask;
651 if (state->regs->SIMPLE_VLAN_REGISTERS) {
656 vlan_mask = state->vlans[j].ports;
657 SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
661 for (i=0; i<MAX_PORTS; i++) {
662 if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
663 int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
664 state->ports[i].pvid);
671 return ip175c_set_flags(state);
675 * Uses only the VLAN port mask and the add tag mask to generate the other fields:
676 * which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
678 static void ip175c_correct_vlan_state(struct ip175c_state *state)
681 state->num_vlans = 0;
682 for (i=0; i<MAX_VLANS; i++) {
683 if (state->vlans[i].ports != 0) {
684 state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
688 for (i=0; i<state->regs->NUM_PORTS; i++) {
689 unsigned int portmask = (1<<i);
690 if (!state->vlan_enabled) {
691 // Share with everybody!
692 state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
695 state->ports[i].shareports = portmask;
696 for (j=0; j<MAX_VLANS; j++) {
697 if (state->vlans[j].ports & portmask)
698 state->ports[i].shareports |= state->vlans[j].ports;
703 static int ip175c_update_state(struct ip175c_state *state)
705 ip175c_correct_vlan_state(state);
706 return ip175c_set_state(state);
709 static int ip175c_set_vlan_mode(struct ip175c_state *state)
711 return ip175c_update_state(state);
714 static int ip175c_do_reset(struct ip175c_state *state)
718 if (REG_SUPP(state->regs->MODE_REG)) {
719 err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
722 err = getPhy(state, state->regs->MODE_REG);
730 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
732 struct ip175c_state *state = dev->priv;
735 err = state->regs->get_state(state); // May be set in get_state.
738 val->value.i = state->vlan_enabled;
742 static void ip175c_reset_vlan_config(struct ip175c_state *state)
746 state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
747 state->add_tag = 0x0000;
748 for (i = 0; i < MAX_VLANS; i++) {
749 state->vlans[i].ports = 0x0000;
750 state->vlans[i].tag = (i ? i : 16);
752 for (i = 0; i < MAX_PORTS; i++)
753 state->ports[i].pvid = 0;
756 static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
758 struct ip175c_state *state = dev->priv;
762 err = state->regs->get_state(state);
765 enable = val->value.i;
767 if (state->vlan_enabled == enable) {
768 // Do not change any state.
771 state->vlan_enabled = enable;
773 // Otherwise, if we are switching state, set fields to a known default.
774 ip175c_reset_vlan_config(state);
776 return state->regs->set_vlan_mode(state);
779 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
781 struct ip175c_state *state = dev->priv;
787 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
790 err = state->regs->get_state(state);
794 ports = state->vlans[val->port_vlan].ports;
797 while (b < MAX_PORTS) {
799 int istagged = ((state->add_tag >> b) & 1);
800 val->value.ports[ind].id = b;
801 val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
812 static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
814 struct ip175c_state *state = dev->priv;
818 if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
821 err = state->regs->get_state(state);
825 state->vlans[val->port_vlan].ports = 0;
826 for (i = 0; i < val->len; i++) {
827 unsigned int bitmask = (1<<val->value.ports[i].id);
828 state->vlans[val->port_vlan].ports |= bitmask;
829 if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
830 state->add_tag |= bitmask;
831 state->remove_tag &= (~bitmask);
833 state->add_tag &= (~bitmask);
834 state->remove_tag |= bitmask;
838 return state->regs->update_state(state);
841 static int ip175c_apply(struct switch_dev *dev)
843 struct ip175c_state *state = dev->priv;
846 err = state->regs->get_flags(state);
850 if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
851 int val = getPhy(state, state->regs->MII_REGISTER_EN);
855 val |= (1<<state->regs->MII_REGISTER_EN_BIT);
856 return setPhy(state, state->regs->MII_REGISTER_EN, val);
861 static int ip175c_reset(struct switch_dev *dev)
863 struct ip175c_state *state = dev->priv;
866 err = state->regs->get_flags(state);
870 if (REG_SUPP(state->regs->RESET_REG)) {
871 err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
874 err = getPhy(state, state->regs->RESET_REG);
877 * Data sheet specifies reset period to be 2 msec.
878 * (I don't see any mention of the 2ms delay in the IP178C spec, only
879 * in IP175C, but it can't hurt.)
884 /* reset switch ports */
885 for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
886 err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
891 ip175c_reset_vlan_config(state);
893 return state->regs->reset(state);
896 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
898 struct ip175c_state *state = dev->priv;
901 err = state->regs->get_state(state);
905 if (state->add_tag & (1<<val->port_vlan)) {
906 if (state->remove_tag & (1<<val->port_vlan))
907 val->value.i = 3; // shouldn't ever happen.
911 if (state->remove_tag & (1<<val->port_vlan))
919 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
921 struct ip175c_state *state = dev->priv;
924 err = state->regs->get_state(state);
928 state->add_tag &= ~(1<<val->port_vlan);
929 state->remove_tag &= ~(1<<val->port_vlan);
931 if (val->value.i == 0)
932 state->remove_tag |= (1<<val->port_vlan);
933 if (val->value.i == 1)
934 state->add_tag |= (1<<val->port_vlan);
936 return state->regs->update_state(state);
939 /** Get the current phy address */
940 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
942 struct ip175c_state *state = dev->priv;
944 val->value.i = state->proc_mii.p;
948 /** Set a new phy address for low level access to registers */
949 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
951 struct ip175c_state *state = dev->priv;
952 int new_reg = val->value.i;
954 if (new_reg < 0 || new_reg > 31)
955 state->proc_mii.p = (u16)-1;
957 state->proc_mii.p = (u16)new_reg;
961 /** Get the current register number */
962 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
964 struct ip175c_state *state = dev->priv;
966 val->value.i = state->proc_mii.m;
970 /** Set a new register address for low level access to registers */
971 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
973 struct ip175c_state *state = dev->priv;
974 int new_reg = val->value.i;
976 if (new_reg < 0 || new_reg > 31)
977 state->proc_mii.m = (u16)-1;
979 state->proc_mii.m = (u16)new_reg;
983 /** Get the register content of state->proc_mii */
984 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
986 struct ip175c_state *state = dev->priv;
987 int retval = -EINVAL;
988 if (REG_SUPP(state->proc_mii))
989 retval = getPhy(state, state->proc_mii);
994 val->value.i = retval;
999 /** Write a value to the register defined by phy/reg above */
1000 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1002 struct ip175c_state *state = dev->priv;
1003 int myval, err = -EINVAL;
1005 myval = val->value.i;
1006 if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
1007 err = setPhy(state, state->proc_mii, (u16)myval);
1012 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1014 struct ip175c_state *state = dev->priv;
1015 val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
1019 static int ip175c_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1021 struct ip175c_state *state = dev->priv;
1022 int vlan = val->port_vlan;
1024 if (vlan < 0 || vlan >= MAX_VLANS)
1027 val->value.i = state->vlans[vlan].tag;
1031 static int ip175c_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1033 struct ip175c_state *state = dev->priv;
1034 int vlan = val->port_vlan;
1035 int tag = val->value.i;
1037 if (vlan < 0 || vlan >= MAX_VLANS)
1040 if (tag < 0 || tag > 4095)
1043 state->vlans[vlan].tag = tag;
1044 return state->regs->update_state(state);
1047 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1049 struct ip175c_state *state = dev->priv;
1050 int nr = val->port_vlan;
1054 if (val->value.i == 100) {
1057 } else if (val->value.i == 10) {
1065 /* Can't set speed for cpu port */
1066 if (nr == state->regs->CPU_PORT)
1069 if (nr >= dev->ports || nr < 0)
1072 ctrl = ip_phy_read(state, nr, 0);
1078 ctrl |= (autoneg<<12);
1079 ctrl |= (speed<<13);
1081 return ip_phy_write(state, nr, 0, ctrl);
1084 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1086 struct ip175c_state *state = dev->priv;
1087 int nr = val->port_vlan;
1090 if (nr == state->regs->CPU_PORT) {
1095 if (nr >= dev->ports || nr < 0)
1098 status = ip_phy_read(state, nr, 1);
1099 speed = ip_phy_read(state, nr, 18);
1100 if (status < 0 || speed < 0)
1104 val->value.i = ((speed & (1<<11)) ? 100 : 10);
1111 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
1113 struct ip175c_state *state = dev->priv;
1114 int ctrl, speed, status;
1115 int nr = val->port_vlan;
1117 char *buf = state->buf; // fixed-length at 80.
1119 if (nr == state->regs->CPU_PORT) {
1120 sprintf(buf, "up, 100 Mbps, cpu port");
1125 if (nr >= dev->ports || nr < 0)
1128 ctrl = ip_phy_read(state, nr, 0);
1129 status = ip_phy_read(state, nr, 1);
1130 speed = ip_phy_read(state, nr, 18);
1131 if (ctrl < 0 || status < 0 || speed < 0)
1135 len = sprintf(buf, "up, %d Mbps, %s duplex",
1136 ((speed & (1<<11)) ? 100 : 10),
1137 ((speed & (1<<10)) ? "full" : "half"));
1139 len = sprintf(buf, "down");
1141 if (ctrl & (1<<12)) {
1142 len += sprintf(buf+len, ", auto-negotiate");
1143 if (!(status & (1<<5)))
1144 len += sprintf(buf+len, " (in progress)");
1146 len += sprintf(buf+len, ", fixed speed (%d)",
1147 ((ctrl & (1<<13)) ? 100 : 10));
1155 static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
1157 struct ip175c_state *state = dev->priv;
1159 *val = state->ports[port].pvid;
1163 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
1165 struct ip175c_state *state = dev->priv;
1168 if (val < 0 || val >= MAX_VLANS)
1171 err = state->regs->get_state(state);
1175 state->ports[port].pvid = val;
1177 return state->regs->update_state(state);
1191 IP175C_REGISTER_PHY,
1192 IP175C_REGISTER_MII,
1193 IP175C_REGISTER_VALUE,
1194 IP175C_REGISTER_ERRNO,
1201 static const struct switch_attr ip175c_global[] = {
1202 [IP175C_ENABLE_VLAN] = {
1203 .id = IP175C_ENABLE_VLAN,
1204 .type = SWITCH_TYPE_INT,
1205 .name = "enable_vlan",
1206 .description = "Flag to enable or disable VLANs and tagging",
1207 .get = ip175c_get_enable_vlan,
1208 .set = ip175c_set_enable_vlan,
1210 [IP175C_GET_NAME] = {
1211 .id = IP175C_GET_NAME,
1212 .type = SWITCH_TYPE_STRING,
1213 .description = "Returns the type of IC+ chip.",
1215 .get = ip175c_read_name,
1218 /* jal: added for low level debugging etc. */
1219 [IP175C_REGISTER_PHY] = {
1220 .id = IP175C_REGISTER_PHY,
1221 .type = SWITCH_TYPE_INT,
1222 .description = "Direct register access: set PHY (0-4, or 29,30,31)",
1224 .get = ip175c_get_phy,
1225 .set = ip175c_set_phy,
1227 [IP175C_REGISTER_MII] = {
1228 .id = IP175C_REGISTER_MII,
1229 .type = SWITCH_TYPE_INT,
1230 .description = "Direct register access: set MII register number (0-31)",
1232 .get = ip175c_get_reg,
1233 .set = ip175c_set_reg,
1235 [IP175C_REGISTER_VALUE] = {
1236 .id = IP175C_REGISTER_VALUE,
1237 .type = SWITCH_TYPE_INT,
1238 .description = "Direct register access: read/write to register (0-65535)",
1240 .get = ip175c_get_val,
1241 .set = ip175c_set_val,
1245 static const struct switch_attr ip175c_vlan[] = {
1246 [IP175C_VLAN_TAG] = {
1247 .id = IP175C_VLAN_TAG,
1248 .type = SWITCH_TYPE_INT,
1249 .description = "VLAN tag (0-4095) [IP175D only]",
1251 .get = ip175c_get_tag,
1252 .set = ip175c_set_tag,
1256 static const struct switch_attr ip175c_port[] = {
1257 [IP175C_PORT_STATUS] = {
1258 .id = IP175C_PORT_STATUS,
1259 .type = SWITCH_TYPE_STRING,
1260 .description = "Returns Detailed port status",
1262 .get = ip175c_get_port_status,
1265 [IP175C_PORT_LINK] = {
1266 .id = IP175C_PORT_LINK,
1267 .type = SWITCH_TYPE_INT,
1268 .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
1270 .get = ip175c_get_port_speed,
1271 .set = ip175c_set_port_speed,
1273 [IP175C_PORT_TAGGED] = {
1274 .id = IP175C_PORT_LINK,
1275 .type = SWITCH_TYPE_INT,
1276 .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
1278 .get = ip175c_get_tagged,
1279 .set = ip175c_set_tagged,
1283 static int ip175c_probe(struct phy_device *pdev)
1285 struct ip175c_state *state;
1286 struct switch_dev *dev;
1289 /* We only attach to PHY 0, but use all available PHYs */
1290 if (pdev->addr != 0)
1293 state = kzalloc(sizeof(*state), GFP_KERNEL);
1298 dev->attr_global.attr = ip175c_global;
1299 dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
1300 dev->attr_port.attr = ip175c_port;
1301 dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
1302 dev->attr_vlan.attr = ip175c_vlan;
1303 dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
1305 dev->get_port_pvid = ip175c_get_pvid;
1306 dev->set_port_pvid = ip175c_set_pvid;
1307 dev->get_vlan_ports = ip175c_get_ports;
1308 dev->set_vlan_ports = ip175c_set_ports;
1309 dev->apply_config = ip175c_apply;
1310 dev->reset_switch = ip175c_reset;
1314 state->mii_bus = pdev->bus;
1316 err = get_model(state);
1320 dev->vlans = MAX_VLANS;
1321 dev->cpu_port = state->regs->CPU_PORT;
1322 dev->ports = state->regs->NUM_PORTS;
1323 dev->name = state->regs->NAME;
1325 pr_info("IP175C: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
1333 static int ip175c_config_init(struct phy_device *pdev)
1335 struct ip175c_state *state = pdev->priv;
1336 struct net_device *dev = pdev->attached_dev;
1339 pdev->irq = PHY_IGNORE_INTERRUPT;
1340 err = register_switch(&state->dev, dev);
1344 ip175c_reset(&state->dev);
1346 state->registered = true;
1348 pdev->state = PHY_RUNNING;
1349 pdev->speed = SPEED_100;
1350 pdev->duplex = DUPLEX_FULL;
1351 pdev->pause = pdev->asym_pause = 0;
1352 netif_carrier_on(pdev->attached_dev);
1357 static void ip175c_remove(struct phy_device *pdev)
1359 struct ip175c_state *state = pdev->priv;
1361 if (state->registered)
1362 unregister_switch(&state->dev);
1366 static int ip175c_config_aneg(struct phy_device *pdev)
1371 static int ip175c_read_status(struct phy_device *pdev)
1376 static struct phy_driver ip175c_driver = {
1377 .name = "IC+ IP175C",
1378 .phy_id = 0x02430c00,
1379 .phy_id_mask = 0x0ffffc00,
1380 .features = PHY_BASIC_FEATURES,
1381 .probe = ip175c_probe,
1382 .remove = ip175c_remove,
1383 .config_init = ip175c_config_init,
1384 .config_aneg = ip175c_config_aneg,
1385 .read_status = ip175c_read_status,
1386 .driver = { .owner = THIS_MODULE },
1389 static struct phy_driver ip175a_driver = {
1390 .name = "IC+ IP175A",
1391 .phy_id = 0x02430c50,
1392 .phy_id_mask = 0x0ffffff0,
1393 .features = PHY_BASIC_FEATURES,
1394 .probe = ip175c_probe,
1395 .remove = ip175c_remove,
1396 .config_init = ip175c_config_init,
1397 .config_aneg = ip175c_config_aneg,
1398 .read_status = ip175c_read_status,
1399 .driver = { .owner = THIS_MODULE },
1403 int __init ip175c_init(void)
1407 ret = phy_driver_register(&ip175a_driver);
1411 return phy_driver_register(&ip175c_driver);
1414 void __exit ip175c_exit(void)
1416 phy_driver_unregister(&ip175c_driver);
1417 phy_driver_unregister(&ip175a_driver);
1420 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
1421 MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
1422 MODULE_LICENSE("GPL");
1424 module_init(ip175c_init);
1425 module_exit(ip175c_exit);