+/*
+ * swconfig-ip175c.c: Swconfig configuration for IC+ IP175C switch
+ *
+ * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
+ * Copyright (C) 2008 Martin Mares <mj@ucw.cz>
+ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+#include <linux/delay.h>
+#include <linux/switch.h>
+
+#define MAX_VLANS 16
+#define MAX_PORTS 9
+
+typedef struct ip175c_reg {
+ u16 p; // phy
+ u16 m; // mii
+} reg;
+typedef char bitnum;
+
+#define NOTSUPPORTED {-1,-1}
+
+#define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
+
+/*********** CONSTANTS ***********/
+struct register_mappings {
+ char *NAME;
+ u16 MODEL_NO; // compare to bits 4-9 of MII register 0,3.
+ bitnum NUM_PORTS;
+ bitnum CPU_PORT;
+
+/* The default VLAN for each port.
+ Default: 0x0001 for Ports 0,1,2,3
+ 0x0002 for Ports 4,5 */
+ reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
+
+/* These ports are tagged.
+ Default: 0x00 */
+ reg ADD_TAG_REG;
+ reg REMOVE_TAG_REG;
+ bitnum ADD_TAG_BIT[MAX_PORTS];
+/* These ports are untagged.
+ Default: 0x00 (i.e. do not alter any VLAN tags...)
+ Maybe set to 0 if user disables VLANs. */
+ bitnum REMOVE_TAG_BIT[MAX_PORTS];
+
+/* Port M and Port N are on the same VLAN.
+ Default: All ports on all VLANs. */
+// Use register {29, 19+N/2}
+ reg VLAN_LOOKUP_REG;
+// Port 5 uses register {30, 18} but same as odd bits.
+ reg VLAN_LOOKUP_REG_5; // in a different register on IP175C.
+ bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
+ bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
+
+/* This VLAN corresponds to which ports.
+ Default: 0x2f,0x30,0x3f,0x3f... */
+ reg TAG_VLAN_MASK_REG;
+ bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
+ bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
+
+ int RESET_VAL;
+ reg RESET_REG;
+
+ reg MODE_REG;
+ int MODE_VAL;
+
+/* General flags */
+ reg ROUTER_CONTROL_REG;
+ reg VLAN_CONTROL_REG;
+ bitnum TAG_VLAN_BIT;
+ bitnum ROUTER_EN_BIT;
+ bitnum NUMLAN_GROUPS_MAX;
+ bitnum NUMLAN_GROUPS_BIT;
+
+ reg MII_REGISTER_EN;
+ bitnum MII_REGISTER_EN_BIT;
+
+ // set to 1 for 178C, 0 for 175C.
+ bitnum SIMPLE_VLAN_REGISTERS; // 175C has two vlans per register but 178C has only one.
+};
+
+static const struct register_mappings IP178C = {
+ .NAME = "IP178C",
+ .MODEL_NO = 0x18,
+ .VLAN_DEFAULT_TAG_REG = {
+ {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
+ {30,9},{30,10},{30,11},
+ },
+
+ .ADD_TAG_REG = {30,12},
+ .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
+ .REMOVE_TAG_REG = {30,13},
+ .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
+
+ .SIMPLE_VLAN_REGISTERS = 1,
+
+ .VLAN_LOOKUP_REG = {31,0},// +N
+ .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
+ .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
+ .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
+
+ .TAG_VLAN_MASK_REG = {30,14}, // +N
+ .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
+ .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
+
+ .RESET_VAL = 0x55AA,
+ .RESET_REG = {30,0},
+ .MODE_VAL = 0,
+ .MODE_REG = NOTSUPPORTED,
+
+ .ROUTER_CONTROL_REG = {30,30},
+ .ROUTER_EN_BIT = 11,
+ .NUMLAN_GROUPS_MAX = 8,
+ .NUMLAN_GROUPS_BIT = 8, // {0-2}
+
+ .VLAN_CONTROL_REG = {30,13},
+ .TAG_VLAN_BIT = 3,
+
+ .CPU_PORT = 8,
+ .NUM_PORTS = 9,
+
+ .MII_REGISTER_EN = NOTSUPPORTED,
+
+};
+
+static const struct register_mappings IP175C = {
+ .NAME = "IP175C",
+ .MODEL_NO = 0x18,
+ .VLAN_DEFAULT_TAG_REG = {
+ {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
+ NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
+ },
+
+ .ADD_TAG_REG = {29,23},
+ .REMOVE_TAG_REG = {29,23},
+ .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
+ .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
+
+ .SIMPLE_VLAN_REGISTERS = 0,
+
+ .VLAN_LOOKUP_REG = {29,19},// +N/2
+ .VLAN_LOOKUP_REG_5 = {30,18},
+ .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
+ .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
+
+ .TAG_VLAN_MASK_REG = {30,1}, // +N/2
+ .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
+ .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
+
+ .RESET_VAL = 0x175C,
+ .RESET_REG = {30,0},
+ .MODE_VAL = 0x175C,
+ .MODE_REG = {29,31},
+
+ .ROUTER_CONTROL_REG = {30,9},
+ .ROUTER_EN_BIT = 3,
+ .NUMLAN_GROUPS_MAX = 8,
+ .NUMLAN_GROUPS_BIT = 0, // {0-2}
+
+ .VLAN_CONTROL_REG = {30,9},
+ .TAG_VLAN_BIT = 7,
+
+ .NUM_PORTS = 6,
+ .CPU_PORT = 5,
+
+ .MII_REGISTER_EN = NOTSUPPORTED,
+
+};
+
+static const struct register_mappings IP175A = {
+ .NAME = "IP175A",
+ .MODEL_NO = 0x05,
+ .VLAN_DEFAULT_TAG_REG = {
+ {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
+ NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
+ },
+
+ .ADD_TAG_REG = {0,23},
+ .REMOVE_TAG_REG = {0,23},
+ .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
+ .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
+
+ .SIMPLE_VLAN_REGISTERS = 1,
+
+ // Only programmable via. EEPROM
+ .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
+ .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
+ .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
+ .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
+
+ .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2
+ .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
+ .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
+
+ .RESET_VAL = -1,
+ .RESET_REG = NOTSUPPORTED,
+ .MODE_VAL = 0,
+ .MODE_REG = NOTSUPPORTED,
+
+ .ROUTER_CONTROL_REG = NOTSUPPORTED,
+ .VLAN_CONTROL_REG = NOTSUPPORTED,
+ .TAG_VLAN_BIT = -1,
+ .ROUTER_EN_BIT = -1,
+ .NUMLAN_GROUPS_MAX = -1,
+ .NUMLAN_GROUPS_BIT = -1, // {0-2}
+
+ .NUM_PORTS = 6,
+ .CPU_PORT = 5,
+
+ .MII_REGISTER_EN = {0, 12},
+ .MII_REGISTER_EN_BIT = 7,
+};
+
+struct ip175c_state {
+ struct switch_dev dev;
+ struct mii_bus *mii_bus;
+ bool registered;
+
+ int router_mode; // ROUTER_EN
+ int vlan_enabled; // TAG_VLAN_EN
+ struct port_state {
+ u16 pvid;
+ unsigned int shareports;
+ } ports[MAX_PORTS];
+ unsigned int add_tag;
+ unsigned int remove_tag;
+ int num_vlans;
+ unsigned int vlan_ports[MAX_VLANS];
+ const struct register_mappings *regs;
+ reg proc_mii; /*!< phy/reg for the low level register access via /proc */
+
+ char buf[80];
+};
+
+static int ip_phy_read(struct mii_bus *bus, int port, int reg)
+{
+ int val;
+
+ mutex_lock(&bus->mdio_lock);
+ val = bus->read(bus, port, reg);
+ mutex_unlock(&bus->mdio_lock);
+
+ return val;
+}
+
+
+static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
+{
+ int err;
+
+ mutex_lock(&bus->mdio_lock);
+ err = bus->write(bus, port, reg, val);
+ mutex_unlock(&bus->mdio_lock);
+
+ return err;
+}
+
+
+static int getPhy (struct ip175c_state *state, reg mii)
+{
+ struct mii_bus *bus = state->mii_bus;
+ int val;
+
+ if (!REG_SUPP(mii))
+ return -EFAULT;
+
+ val = ip_phy_read(bus, mii.p, mii.m);
+ if (val < 0)
+ pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
+
+ return val;
+}
+
+static int setPhy (struct ip175c_state *state, reg mii, u16 value)
+{
+ struct mii_bus *bus = state->mii_bus;
+ int err;
+
+ if (!REG_SUPP(mii))
+ return -EFAULT;
+
+ err = ip_phy_write(bus, mii.p, mii.m, value);
+ if (err < 0) {
+ pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
+ return err;
+ }
+ mdelay(2);
+ getPhy(state, mii);
+ return 0;
+}
+
+/**
+ * These two macros are to simplify the mapping of logical bits to the bits in hardware.
+ * NOTE: these macros will return if there is an error!
+ */
+
+#define GET_PORT_BITS(state, bits, addr, bit_lookup) \
+ do { \
+ int i, val = getPhy((state), (addr)); \
+ if (val < 0) \
+ return val; \
+ (bits) = 0; \
+ for (i = 0; i < MAX_PORTS; i++) { \
+ if ((bit_lookup)[i] == -1) continue; \
+ if (val & (1<<(bit_lookup)[i])) \
+ (bits) |= (1<<i); \
+ } \
+ } while (0)
+
+#define SET_PORT_BITS(state, bits, addr, bit_lookup) \
+ do { \
+ int i, val = getPhy((state), (addr)); \
+ if (val < 0) \
+ return val; \
+ for (i = 0; i < MAX_PORTS; i++) { \
+ unsigned int newmask = ((bits)&(1<<i)); \
+ if ((bit_lookup)[i] == -1) continue; \
+ val &= ~(1<<(bit_lookup)[i]); \
+ val |= ((newmask>>i)<<(bit_lookup)[i]); \
+ } \
+ val = setPhy((state), (addr), val); \
+ if (val < 0) \
+ return val; \
+ } while (0)
+
+static int get_model(struct ip175c_state *state)
+{
+ reg oui_id_reg = {0, 2};
+ int oui_id;
+ reg model_no_reg = {0, 3};
+ int model_no, model_no_orig;
+
+ // 175 and 178 have the same oui ID.
+ reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
+ int is_178c = 0;
+
+ oui_id = getPhy(state, oui_id_reg);
+ if (oui_id != 0x0243) {
+ // non
+ return -ENODEV; // Not a IC+ chip.
+ }
+ oui_id = getPhy(state, oui_id_reg_178c);
+ if (oui_id == 0x0243) {
+ is_178c = 1;
+ }
+
+ model_no_orig = getPhy(state, model_no_reg);
+ if (model_no_orig < 0) {
+ return -ENODEV;
+ }
+ model_no = model_no_orig >> 4; // shift out revision number.
+ model_no &= 0x3f; // only take the model number (low 6 bits).
+ if (model_no == IP175A.MODEL_NO) {
+ state->regs = &IP175A;
+ } else if (model_no == IP175C.MODEL_NO) {
+ if (is_178c) {
+ state->regs = &IP178C;
+ } else {
+ state->regs = &IP175C;
+ }
+ } else {
+ printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
+ return -EPERM;
+ }
+ return 0;
+}
+
+/** Get only the vlan and router flags on the router **/
+static int get_flags(struct ip175c_state *state)
+{
+ int val;
+
+ state->router_mode = 0;
+ state->vlan_enabled = -1; // hack
+ state->num_vlans = 0;
+
+ if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
+ return 0; // not an error if it doesn't support enable vlan.
+ }
+
+ val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
+ if (val < 0) {
+ return val;
+ }
+ if (state->regs->ROUTER_EN_BIT >= 0)
+ state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
+
+ if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
+ state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
+ state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
+ state->num_vlans+=1; // does not include WAN.
+ }
+
+
+ val = getPhy(state, state->regs->VLAN_CONTROL_REG);
+ if (val < 0) {
+ return 0;
+ }
+ if (state->regs->TAG_VLAN_BIT >= 0)
+ state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
+
+ return 0;
+}
+/** Get all state variables for VLAN mappings and port-based tagging. **/
+static int get_state(struct ip175c_state *state)
+{
+ int i, j;
+ int ret;
+ ret = get_flags(state);
+ if (ret < 0) {
+ return ret;
+ }
+ GET_PORT_BITS(state, state->remove_tag,
+ state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
+ GET_PORT_BITS(state, state->add_tag,
+ state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
+
+ if (state->vlan_enabled == -1) {
+ // not sure how to get this...
+ state->vlan_enabled = (!state->remove_tag && !state->add_tag);
+ }
+
+ if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
+ for (j=0; j<MAX_PORTS; j++) {
+ state->ports[j].shareports = 0; // initialize them in case.
+ }
+ for (j=0; j<state->regs->NUM_PORTS; j++) {
+ reg addr;
+ const bitnum *bit_lookup = (j%2==0)?
+ state->regs->VLAN_LOOKUP_EVEN_BIT:
+ state->regs->VLAN_LOOKUP_ODD_BIT;
+ addr = state->regs->VLAN_LOOKUP_REG;
+ if (state->regs->SIMPLE_VLAN_REGISTERS) {
+ addr.m += j;
+ } else {
+ switch (j) {
+ case 0:
+ case 1:
+ break;
+ case 2:
+ case 3:
+ addr.m+=1;
+ break;
+ case 4:
+ addr.m+=2;
+ break;
+ case 5:
+ addr = state->regs->VLAN_LOOKUP_REG_5;
+ break;
+ }
+ }
+
+ if (REG_SUPP(addr)) {
+ GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
+ }
+ }
+ } else {
+ for (j=0; j<MAX_PORTS; j++) {
+ state->ports[j].shareports = 0xff;
+ }
+ }
+
+ for (i=0; i<MAX_PORTS; i++) {
+ if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
+ int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
+ if (val < 0) {
+ return val;
+ }
+ state->ports[i].pvid = val;
+ } else {
+ state->ports[i].pvid = 0;
+ }
+ }
+
+ if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
+ for (j=0; j<MAX_VLANS; j++) {
+ reg addr = state->regs->TAG_VLAN_MASK_REG;
+ const bitnum *bit_lookup = (j%2==0)?
+ state->regs->TAG_VLAN_MASK_EVEN_BIT:
+ state->regs->TAG_VLAN_MASK_ODD_BIT;
+ if (state->regs->SIMPLE_VLAN_REGISTERS) {
+ addr.m += j;
+ } else {
+ addr.m += j/2;
+ }
+ GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
+ }
+ } else {
+ for (j=0; j<MAX_VLANS; j++) {
+ state->vlan_ports[j] = 0;
+ for (i=0; i<state->regs->NUM_PORTS; i++) {
+ if ((state->ports[i].pvid == j) ||
+ (state->ports[i].pvid == 0)) {
+ state->vlan_ports[j] |= (1<<i);
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+/** Only update vlan and router flags in the switch **/
+static int update_flags(struct ip175c_state *state)
+{
+ int val;
+
+ if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
+ return 0;
+ }
+
+ val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
+ if (val < 0) {
+ return val;
+ }
+ if (state->regs->ROUTER_EN_BIT >= 0) {
+ if (state->router_mode) {
+ val |= (1<<state->regs->ROUTER_EN_BIT);
+ } else {
+ val &= (~(1<<state->regs->ROUTER_EN_BIT));
+ }
+ }
+ if (state->regs->TAG_VLAN_BIT >= 0) {
+ if (state->vlan_enabled) {
+ val |= (1<<state->regs->TAG_VLAN_BIT);
+ } else {
+ val &= (~(1<<state->regs->TAG_VLAN_BIT));
+ }
+ }
+ if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
+ val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
+ if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
+ val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
+ } else if (state->num_vlans >= 1) {
+ val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
+ }
+ }
+ return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
+}
+
+/** Update all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
+static int update_state(struct ip175c_state *state)
+{
+ int j;
+ int i;
+ SET_PORT_BITS(state, state->add_tag,
+ state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
+ SET_PORT_BITS(state, state->remove_tag,
+ state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
+
+ if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
+ for (j=0; j<state->regs->NUM_PORTS; j++) {
+ reg addr;
+ const bitnum *bit_lookup = (j%2==0)?
+ state->regs->VLAN_LOOKUP_EVEN_BIT:
+ state->regs->VLAN_LOOKUP_ODD_BIT;
+
+ // duplicate code -- sorry
+ addr = state->regs->VLAN_LOOKUP_REG;
+ if (state->regs->SIMPLE_VLAN_REGISTERS) {
+ addr.m += j;
+ } else {
+ switch (j) {
+ case 0:
+ case 1:
+ break;
+ case 2:
+ case 3:
+ addr.m+=1;
+ break;
+ case 4:
+ addr.m+=2;
+ break;
+ case 5:
+ addr = state->regs->VLAN_LOOKUP_REG_5;
+ break;
+ default:
+ addr.m = -1; // shouldn't get here, but...
+ break;
+ }
+ }
+ //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
+ if (REG_SUPP(addr)) {
+ SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
+ }
+ }
+ }
+ if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
+ for (j=0; j<MAX_VLANS; j++) {
+ reg addr = state->regs->TAG_VLAN_MASK_REG;
+ const bitnum *bit_lookup = (j%2==0)?
+ state->regs->TAG_VLAN_MASK_EVEN_BIT:
+ state->regs->TAG_VLAN_MASK_ODD_BIT;
+ unsigned int vlan_mask;
+ if (state->regs->SIMPLE_VLAN_REGISTERS) {
+ addr.m += j;
+ } else {
+ addr.m += j/2;
+ }
+ vlan_mask = state->vlan_ports[j];
+ SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
+ }
+ }
+
+ for (i=0; i<MAX_PORTS; i++) {
+ if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
+ int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
+ state->ports[i].pvid);
+ if (err < 0) {
+ return err;
+ }
+ }
+ }
+
+ return update_flags(state);
+
+ // software reset: 30.0 = 0x175C
+ // wait 2ms
+ // reset ports 0,1,2,3,4
+}
+
+/*
+ Uses only the VLAN port mask and the add tag mask to generate the other fields:
+ which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
+ */
+static void correct_vlan_state(struct ip175c_state *state)
+{
+ int i, j;
+ state->num_vlans = 0;
+ for (i=0; i<MAX_VLANS; i++) {
+ if (state->vlan_ports[i] != 0) {
+ state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
+ }
+ }
+
+
+
+ for (i=0; i<state->regs->NUM_PORTS; i++) {
+ unsigned int portmask = (1<<i);
+ if (!state->vlan_enabled) {
+ // share with everybody!
+ state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
+ continue;
+ }
+ state->ports[i].shareports = portmask;
+ for (j=0; j<MAX_VLANS; j++) {
+ if (state->vlan_ports[j] & portmask)
+ state->ports[i].shareports |= state->vlan_ports[j];
+ }
+ }
+ state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
+}
+
+static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+
+ err = get_state(state); // may be set in get_state.
+ if (err < 0)
+ return err;
+ val->value.i = state->vlan_enabled;
+ return 0;
+}
+
+static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+ int enable;
+ int i;
+
+ err = get_state(state);
+ if (err < 0)
+ return err;
+ enable = val->value.i;
+
+ if (state->vlan_enabled == enable) {
+ // do not change any state.
+ return 0;
+ }
+ state->vlan_enabled = enable;
+
+ // Otherwise, if we are switching state, set fields to a known default.
+ state->remove_tag = 0x0000;
+ state->add_tag = 0x0000;
+ for (i = 0; i < MAX_PORTS; i++)
+ state->ports[i].shareports = 0xffff;
+
+ for (i = 0; i < MAX_VLANS; i++)
+ state->vlan_ports[i] = 0x0;
+
+ if (state->vlan_enabled) {
+ // updates other fields only based off vlan_ports and add_tag fields.
+ // Note that by default, no ports are in any vlans.
+ correct_vlan_state(state);
+ }
+ // ensure sane defaults?
+ return update_state(state);
+}
+
+static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+ int b;
+ int ind;
+ unsigned int ports;
+
+ if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
+ return -EINVAL;
+
+ err = get_state(state);
+ if (err<0)
+ return err;
+
+ ports = state->vlan_ports[val->port_vlan];
+ b = 0;
+ ind = 0;
+ while (b < MAX_PORTS) {
+ if (ports&1) {
+ int istagged = ((state->add_tag >> b) & 1);
+ val->value.ports[ind].id = b;
+ val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
+ ind++;
+ }
+ b++;
+ ports >>= 1;
+ }
+ val->len = ind;
+
+ return 0;
+}
+
+static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int i;
+ int err;
+
+ if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
+ return -EINVAL;
+
+ err = get_state(state);
+ if (err < 0)
+ return err;
+
+ state->vlan_ports[val->port_vlan] = 0;
+ for (i = 0; i < val->len; i++) {
+ int bitmask = (1<<val->value.ports[i].id);
+ state->vlan_ports[val->port_vlan] |= bitmask;
+ if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
+ state->add_tag |= bitmask;
+ } else {
+ state->add_tag &= (~bitmask);
+ }
+ }
+
+ correct_vlan_state(state);
+ err = update_state(state);
+
+ return err;
+}
+
+static int ip175c_apply(struct switch_dev *dev)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+
+ err = get_flags(state);
+ if (err < 0)
+ return err;
+
+ if (REG_SUPP(state->regs->MII_REGISTER_EN)){
+ int val = getPhy(state, state->regs->MII_REGISTER_EN);
+ if (val < 0) {
+ return val;
+ }
+ val |= (1<<state->regs->MII_REGISTER_EN_BIT);
+ return setPhy(state, state->regs->MII_REGISTER_EN, val);
+ }
+ return 0;
+}
+
+static int ip175c_reset(struct switch_dev *dev)
+{
+ struct ip175c_state *state = dev->priv;
+ int i, err;
+
+ err = get_flags(state);
+ if (err < 0)
+ return err;
+
+ if (REG_SUPP(state->regs->RESET_REG)) {
+ err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
+ if (err < 0)
+ return err;
+ err = getPhy(state, state->regs->RESET_REG);
+
+ /* data sheet specifies reset period is 2 msec
+ (don't see any mention of the 2ms delay in the IP178C spec, only
+ in IP175C, but it can't hurt.) */
+ mdelay(2);
+ }
+
+ if (REG_SUPP(state->regs->MODE_REG)) {
+ err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
+ if (err < 0)
+ return err;
+ err = getPhy(state, state->regs->MODE_REG);
+ }
+
+ /* reset switch ports */
+ for (i = 0; i < 5; i++) {
+ err = state->mii_bus->write(state->mii_bus, i,
+ MII_BMCR, BMCR_RESET);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+/*! get the current register number */
+static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+
+ err = get_state(state);
+ if (err < 0)
+ return err;
+
+ if (state->add_tag & (1<<val->port_vlan)) {
+ if (state->remove_tag & (1<<val->port_vlan))
+ val->value.i = 3; // shouldn't ever happen.
+ else
+ val->value.i = 1;
+ } else {
+ if (state->remove_tag & (1<<val->port_vlan))
+ val->value.i = 0;
+ else
+ val->value.i = 2;
+ }
+ return 0;
+}
+
+/*! set a new register address for low level access to registers */
+static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int err;
+
+ err = get_state(state);
+ if (err < 0)
+ return err;
+
+ state->add_tag &= ~(1<<val->port_vlan);
+ state->remove_tag &= ~(1<<val->port_vlan);
+
+ if (val->value.i == 0)
+ state->remove_tag |= (1<<val->port_vlan);
+ if (val->value.i == 1)
+ state->add_tag |= (1<<val->port_vlan);
+
+ SET_PORT_BITS(state, state->add_tag,
+ state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
+ SET_PORT_BITS(state, state->remove_tag,
+ state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
+
+ return err;
+}
+
+
+/* low level /proc procedures */
+
+/*! get the current phy address */
+static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+
+ val->value.i = state->proc_mii.p;
+ return 0;
+}
+
+/*! set a new phy address for low level access to registers */
+static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int new_reg = val->value.i;
+
+ if (new_reg < 0 || new_reg > 31)
+ state->proc_mii.p = (u16)-1;
+ else
+ state->proc_mii.p = (u16)new_reg;
+ return 0;
+}
+
+/*! get the current register number */
+static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+
+ val->value.i = state->proc_mii.m;
+ return 0;
+}
+
+/*! set a new register address for low level access to registers */
+static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int new_reg = val->value.i;
+
+ if (new_reg < 0 || new_reg > 31)
+ state->proc_mii.m = (u16)-1;
+ else
+ state->proc_mii.m = (u16)new_reg;
+ return 0;
+}
+
+/*! get the register content of state->proc_mii */
+static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int retval = -EINVAL;
+ if (REG_SUPP(state->proc_mii))
+ retval = getPhy(state, state->proc_mii);
+
+ if (retval < 0) {
+ return retval;
+ } else {
+ val->value.i = retval;
+ return 0;
+ }
+}
+
+/*! write a value to the register defined by phy/reg above */
+static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ int myval, err = 0;
+
+ myval = val->value.i;
+ if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
+ err = setPhy(state, state->proc_mii, (u16)myval);
+ }
+ return err;
+}
+
+static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
+ return 0;
+}
+
+
+static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ struct mii_bus *bus = state->mii_bus;
+ int nr = val->port_vlan;
+ int ctrl;
+ int autoneg;
+ int speed;
+ if (val->value.i == 100) {
+ speed = 1;
+ autoneg = 0;
+ } else if (val->value.i == 10) {
+ speed = 0;
+ autoneg = 0;
+ } else {
+ autoneg = 1;
+ speed = 1;
+ }
+
+ /* can't set speed for cpu port */
+ if (nr == state->regs->CPU_PORT)
+ return -EINVAL;
+
+ if (nr >= dev->ports || nr < 0)
+ return -EINVAL;
+
+ ctrl = ip_phy_read(bus, nr, 0);
+ if (ctrl < 0)
+ return -EIO;
+
+ ctrl &= (~(1<<12));
+ ctrl &= (~(1<<13));
+ ctrl |= (autoneg<<12);
+ ctrl |= (speed<<13);
+
+ return ip_phy_write(bus, nr, 0, ctrl);
+}
+
+static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ struct mii_bus *bus = state->mii_bus;
+ int nr = val->port_vlan;
+ int speed, status;
+
+ if (nr == state->regs->CPU_PORT) {
+ val->value.i = 100;
+ return 0;
+ }
+
+ if (nr >= dev->ports || nr < 0)
+ return -EINVAL;
+
+ status = ip_phy_read(bus, nr, 1);
+ speed = ip_phy_read(bus, nr, 18);
+ if (status < 0 || speed < 0)
+ return -EIO;
+
+ if (status & 4)
+ val->value.i = ((speed & (1<<11)) ? 100 : 10);
+ else
+ val->value.i = 0;
+
+ return 0;
+}
+
+
+static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
+{
+ struct ip175c_state *state = dev->priv;
+ struct mii_bus *bus = state->mii_bus;
+ int ctrl, speed, status;
+ int nr = val->port_vlan;
+ int len;
+ char *buf = state->buf; // fixed-length at 80.
+
+ if (nr == state->regs->CPU_PORT) {
+ sprintf(buf, "up, 100 Mbps, cpu port");
+ val->value.s = buf;
+ return 0;
+ }
+
+ if (nr >= dev->ports || nr < 0)
+ return -EINVAL;
+
+ ctrl = ip_phy_read(bus, nr, 0);
+ status = ip_phy_read(bus, nr, 1);
+ speed = ip_phy_read(bus, nr, 18);
+ if (ctrl < 0 || status < 0 || speed < 0)
+ return -EIO;
+
+ if (status & 4)
+ len = sprintf(buf, "up, %d Mbps, %s duplex",
+ ((speed & (1<<11)) ? 100 : 10),
+ ((speed & (1<<10)) ? "full" : "half"));
+ else
+ len = sprintf(buf, "down");
+
+ if (ctrl & (1<<12)) {
+ len += sprintf(buf+len, ", auto-negotiate");
+ if (!(status & (1<<5)))
+ len += sprintf(buf+len, " (in progress)");
+ } else {
+ len += sprintf(buf+len, ", fixed speed (%d)",
+ ((ctrl & (1<<13)) ? 100 : 10));
+ }
+
+ buf[len] = '\0';
+ val->value.s = buf;
+ return 0;
+}
+
+static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
+{
+ struct ip175c_state *state = dev->priv;
+
+ *val = state->ports[port].pvid;
+ return 0;
+}
+
+static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
+{
+ struct ip175c_state *state = dev->priv;
+
+ state->ports[port].pvid = val;
+
+ if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
+ return 0;
+
+ return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
+}
+
+
+enum Ports {
+ IP175C_PORT_STATUS,
+ IP175C_PORT_LINK,
+ IP175C_PORT_TAGGED,
+ IP175C_PORT_PVID,
+};
+
+enum Globals {
+ IP175C_ENABLE_VLAN,
+ IP175C_GET_NAME,
+ IP175C_REGISTER_PHY,
+ IP175C_REGISTER_MII,
+ IP175C_REGISTER_VALUE,
+ IP175C_REGISTER_ERRNO,
+};
+
+static const struct switch_attr ip175c_global[] = {
+ [IP175C_ENABLE_VLAN] = {
+ .id = IP175C_ENABLE_VLAN,
+ .type = SWITCH_TYPE_INT,
+ .name = "enable_vlan",
+ .description = "Flag to enable or disable VLANs and tagging",
+ .get = ip175c_get_enable_vlan,
+ .set = ip175c_set_enable_vlan,
+ },
+ [IP175C_GET_NAME] = {
+ .id = IP175C_GET_NAME,
+ .type = SWITCH_TYPE_STRING,
+ .description = "Returns the type of IC+ chip.",
+ .name = "name",
+ .get = ip175c_read_name,
+ .set = NULL,
+ },
+ /* jal: added for low level debugging etc. */
+ [IP175C_REGISTER_PHY] = {
+ .id = IP175C_REGISTER_PHY,
+ .type = SWITCH_TYPE_INT,
+ .description = "Direct register access: set phy (0-4, or 29,30,31)",
+ .name = "phy",
+ .get = ip175c_get_phy,
+ .set = ip175c_set_phy,
+ },
+ [IP175C_REGISTER_MII] = {
+ .id = IP175C_REGISTER_MII,
+ .type = SWITCH_TYPE_INT,
+ .description = "Direct register access: set mii number (0-31)",
+ .name = "reg",
+ .get = ip175c_get_reg,
+ .set = ip175c_set_reg,
+ },
+ [IP175C_REGISTER_VALUE] = {
+ .id = IP175C_REGISTER_VALUE,
+ .type = SWITCH_TYPE_INT,
+ .description = "Direct register access: read/write to register (0-65535)",
+ .name = "val",
+ .get = ip175c_get_val,
+ .set = ip175c_set_val,
+ },
+};
+
+static const struct switch_attr ip175c_vlan[] = {
+};
+
+static const struct switch_attr ip175c_port[] = {
+ [IP175C_PORT_STATUS] = {
+ .id = IP175C_PORT_STATUS,
+ .type = SWITCH_TYPE_STRING,
+ .description = "Returns Detailed port status",
+ .name = "status",
+ .get = ip175c_get_port_status,
+ .set = NULL,
+ },
+ [IP175C_PORT_LINK] = {
+ .id = IP175C_PORT_LINK,
+ .type = SWITCH_TYPE_INT,
+ .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
+ .name = "link",
+ .get = ip175c_get_port_speed,
+ .set = ip175c_set_port_speed,
+ },
+ [IP175C_PORT_TAGGED] = {
+ .id = IP175C_PORT_LINK,
+ .type = SWITCH_TYPE_INT,
+ .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
+ .name = "tagged",
+ .get = ip175c_get_tagged,
+ .set = ip175c_set_tagged,
+ },
+};
+
+static int ip175c_probe(struct phy_device *pdev)
+{
+ struct ip175c_state *state;
+ struct switch_dev *dev;
+ int err;
+
+ /* we only attach to PHY 0, but use all available PHYs */
+ if (pdev->addr != 0)
+ return -ENODEV;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ dev = &state->dev;
+ dev->attr_global.attr = ip175c_global;
+ dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
+ dev->attr_port.attr = ip175c_port;
+ dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
+ dev->attr_vlan.attr = ip175c_vlan;
+ dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
+
+ dev->get_port_pvid = ip175c_get_pvid;
+ dev->set_port_pvid = ip175c_set_pvid;
+ dev->get_vlan_ports = ip175c_get_ports;
+ dev->set_vlan_ports = ip175c_set_ports;
+ dev->apply_config = ip175c_apply;
+ dev->reset_switch = ip175c_reset;
+
+ dev->priv = state;
+ pdev->priv = state;
+ state->mii_bus = pdev->bus;
+
+ err = get_model(state);
+ if (err < 0)
+ goto error;
+
+ dev->vlans = MAX_VLANS;
+ dev->cpu_port = state->regs->CPU_PORT;
+ dev->ports = state->regs->NUM_PORTS;
+ dev->name = state->regs->NAME;
+
+ return 0;
+
+error:
+ kfree(state);
+ return err;
+}
+
+static int ip175c_config_init(struct phy_device *pdev)
+{
+ struct ip175c_state *state = pdev->priv;
+ struct net_device *dev = pdev->attached_dev;
+ int err;
+
+ pdev->irq = PHY_IGNORE_INTERRUPT;
+ err = register_switch(&state->dev, dev);
+ if (err < 0)
+ return err;
+
+ ip175c_reset(&state->dev);
+
+ state->registered = true;
+ netif_carrier_on(pdev->attached_dev);
+
+ return 0;
+}
+
+static void ip175c_remove(struct phy_device *pdev)
+{
+ struct ip175c_state *state = pdev->priv;
+
+ if (state->registered)
+ unregister_switch(&state->dev);
+ kfree(state);
+}
+
+static int ip175c_config_aneg(struct phy_device *pdev)
+{
+ return 0;
+}
+
+static int ip175c_read_status(struct phy_device *pdev)
+{
+ pdev->speed = SPEED_100;
+ pdev->duplex = DUPLEX_FULL;
+ pdev->pause = pdev->asym_pause = 0;
+ return 0;
+}
+
+static struct phy_driver ip175c_driver = {
+ .name = "IC+ IP175C",
+ .phy_id = 0x02430d80,
+ .phy_id_mask = 0x0ffffff0,
+ .features = PHY_BASIC_FEATURES,
+ .probe = ip175c_probe,
+ .remove = ip175c_remove,
+ .config_init = ip175c_config_init,
+ .config_aneg = ip175c_config_aneg,
+ .read_status = ip175c_read_status,
+ .driver = { .owner = THIS_MODULE },
+};
+
+
+int __init ip175c_init(void)
+{
+ return phy_driver_register(&ip175c_driver);
+}
+
+void __exit ip175c_exit(void)
+{
+ phy_driver_unregister(&ip175c_driver);
+}
+
+MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
+MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
+MODULE_LICENSE("GPL");
+
+module_init(ip175c_init);
+module_exit(ip175c_exit);
+
projects / openwrt / svn-archive / archive.git / commitdiff