diff options
Diffstat (limited to 'target/linux/generic-2.6/files')
| -rw-r--r-- | target/linux/generic-2.6/files/drivers/net/phy/ip175c.c | 1342 |
1 files changed, 1342 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c new file mode 100644 index 000000000..7c447830e --- /dev/null +++ b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c @@ -0,0 +1,1342 @@ +/* + * 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 { + struct phy_device *phy; + unsigned int shareports; + u16 vlan_tag; + } 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 */ + int proc_errno; /*!< error code of the last read/write to "val" */ + + char buf[80]; +}; + +static int getPhy (struct ip175c_state *state, reg mii) +{ + struct mii_bus *bus = state->mii_bus; + int err; + + if (!REG_SUPP(mii)) + return -EFAULT; + mutex_lock(&bus->mdio_lock); + err = bus->read(bus, mii.p, mii.m); + mutex_unlock(&bus->mdio_lock); + if (err < 0) { + state->proc_errno = err; + pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-err); + return err; + } + + pr_debug("IP175C: Read MII register %d,%d -> %04x\n", mii.p, mii.m, err); + return err; +} + +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; + mutex_lock(&bus->mdio_lock); + err = bus->write(bus, mii.p, mii.m, value); + mutex_unlock(&bus->mdio_lock); + if (err < 0) { + state->proc_errno = err; + 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); + pr_debug("IP175C: Set MII register %d,%d to %04x\n", mii.p, mii.m, value); + 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].vlan_tag = val; + } else { + state->ports[i].vlan_tag = 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].vlan_tag == j) || + (state->ports[i].vlan_tag == 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].vlan_tag); + 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++) { + int oldtag = state->ports[i].vlan_tag; + if (oldtag >= 0 && oldtag < MAX_VLANS) { + if (state->vlan_ports[oldtag] & (1<<i)) { + continue; // primary vlan is valid. + } + } + state->ports[i].vlan_tag = 0; + } + + for (i=0; i<state->regs->NUM_PORTS; i++) { + unsigned int portmask = (1<<i); + 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]; + if (state->ports[i].vlan_tag == 0) { + state->ports[i].vlan_tag = j; + } + } + } + if (!state->vlan_enabled) { + // share with everybody! + state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1; + } + } + 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].vlan_tag = 0; + 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); + } + } + /* + // no primary vlan id support in swconfig? + // primary vlan will be set to the first non-zero vlan a port is a member of. + for (i = 0; i< state->regs->NUM_PORTS; i++) { + if (vlan_config->pvid & (1<<i)) { + state->ports[i].vlan_tag = nr; + } + } + */ + + 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, const struct switch_attr *attr, struct switch_val *val) +{ + 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) { + state->proc_errno = retval; + return retval; + } else { + state->proc_errno = 0; + 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; + + myval = val->value.i; + if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) { + state->proc_errno = setPhy(state, state->proc_mii, (u16)myval); + } else { + state->proc_errno = -EINVAL; + } + return state->proc_errno; +} + +/*! get the errno of the last read/write of "val" */ +static int ip175c_get_errno(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) +{ + struct ip175c_state *state = dev->priv; + val->value.i = state->proc_errno; + return 0; +} + +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) +{ + int nr = val->port_vlan; + struct ip175c_state *state = dev->priv; + struct phy_device *phy; + 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; + } + + if (nr == state->regs->CPU_PORT) { + return -EINVAL; // can't set speed for cpu port! + } + + if (nr >= dev->ports || nr < 0) + return -EINVAL; + phy = state->ports[nr].phy; + if (!phy) + return -EINVAL; + + ctrl = phy_read(phy, 0); + if (ctrl < 0) + return -EIO; + + ctrl &= (~(1<<12)); + ctrl &= (~(1<<13)); + ctrl |= (autoneg<<12); + ctrl |= (speed<<13); + + return phy_write(phy, 0, ctrl); +} + +static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) +{ + int nr = val->port_vlan; + struct ip175c_state *state = dev->priv; + struct phy_device *phy; + int speed, status; + + if (nr == state->regs->CPU_PORT) { + val->value.i = 100; + return 0; + } + + if (nr >= dev->ports || nr < 0) + return -EINVAL; + phy = state->ports[nr].phy; + if (!phy) + return -EINVAL; + + status = phy_read(phy, 1); + speed = phy_read(phy, 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) +{ + int nr = val->port_vlan; + struct ip175c_state *state = dev->priv; + struct phy_device *phy; + int ctrl, speed, status; + 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; + phy = state->ports[nr].phy; + if (!phy) + return -EINVAL; + + ctrl = phy_read(phy, 0); + status = phy_read(phy, 1); + speed = phy_read(phy, 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; +} + +enum Ports { + IP175C_PORT_STATUS, + IP175C_PORT_LINK, + IP175C_PORT_TAGGED, +}; + +enum Globals { + IP175C_RESET, + 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_RESET] = { + .id = IP175C_RESET, + .type = SWITCH_TYPE_NOVAL, + .name = "reset", + .get = NULL, + .description = "Resets the switch but does not clear vlan configuration", + .set = ip175c_reset, + }, + [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, + }, + [IP175C_REGISTER_ERRNO] = { + .id = IP175C_REGISTER_ERRNO, + .type = SWITCH_TYPE_INT, + .description = "Direct register access: returns last read or write error", + .name = "errno", + .get = ip175c_get_errno, + .set = NULL, + }, + +}; + +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_vlan_ports = ip175c_get_ports; + dev->set_vlan_ports = ip175c_set_ports; + dev->apply_config = ip175c_apply; + + 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, NULL, NULL); + + 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); + |