-/*
- * ip17xx.c: Swconfig configuration for IC+ IP17xx switch family
- *
- * 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>
-#include <linux/device.h>
-
-#define MAX_VLANS 16
-#define MAX_PORTS 9
-#undef DUMP_MII_IO
-
-typedef struct ip17xx_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))
-
-struct ip17xx_state;
-
-/*********** 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.
-
- // Pointers to functions which manipulate hardware state
- int (*update_state)(struct ip17xx_state *state);
- int (*set_vlan_mode)(struct ip17xx_state *state);
- int (*reset)(struct ip17xx_state *state);
-};
-
-static int ip175c_update_state(struct ip17xx_state *state);
-static int ip175c_set_vlan_mode(struct ip17xx_state *state);
-static int ip175c_reset(struct ip17xx_state *state);
-
-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,
-
- .update_state = ip175c_update_state,
- .set_vlan_mode = ip175c_set_vlan_mode,
- .reset = ip175c_reset,
-};
-
-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,
-
- .update_state = ip175c_update_state,
- .set_vlan_mode = ip175c_set_vlan_mode,
- .reset = ip175c_reset,
-};
-
-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,-1,-1,-1,-1},
-
- .SIMPLE_VLAN_REGISTERS = 0,
-
- // Only programmable via EEPROM
- .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
- .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
- .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
- .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
-
- .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
- .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
- .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-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 = 5,
- .CPU_PORT = 4,
-
- .MII_REGISTER_EN = {0, 18},
- .MII_REGISTER_EN_BIT = 7,
-
- .update_state = ip175c_update_state,
- .set_vlan_mode = ip175c_set_vlan_mode,
- .reset = ip175c_reset,
-};
-
-
-static int ip175d_update_state(struct ip17xx_state *state);
-static int ip175d_set_vlan_mode(struct ip17xx_state *state);
-static int ip175d_reset(struct ip17xx_state *state);
-
-static const struct register_mappings IP175D = {
- .NAME = "IP175D",
- .MODEL_NO = 0x18,
-
- // The IP175D has a completely different interface, so we leave most
- // of the registers undefined and switch to different code paths.
-
- .VLAN_DEFAULT_TAG_REG = {
- NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
- NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
- },
-
- .ADD_TAG_REG = NOTSUPPORTED,
- .REMOVE_TAG_REG = NOTSUPPORTED,
-
- .SIMPLE_VLAN_REGISTERS = 0,
-
- .VLAN_LOOKUP_REG = NOTSUPPORTED,
- .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
- .TAG_VLAN_MASK_REG = NOTSUPPORTED,
-
- .RESET_VAL = 0x175D,
- .RESET_REG = {20,2},
- .MODE_REG = NOTSUPPORTED,
-
- .ROUTER_CONTROL_REG = NOTSUPPORTED,
- .ROUTER_EN_BIT = -1,
- .NUMLAN_GROUPS_BIT = -1,
-
- .VLAN_CONTROL_REG = NOTSUPPORTED,
- .TAG_VLAN_BIT = -1,
-
- .NUM_PORTS = 6,
- .CPU_PORT = 5,
-
- .MII_REGISTER_EN = NOTSUPPORTED,
-
- .update_state = ip175d_update_state,
- .set_vlan_mode = ip175d_set_vlan_mode,
- .reset = ip175d_reset,
-};
-
-struct ip17xx_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;
- struct vlan_state {
- unsigned int ports;
- unsigned int tag; // VLAN tag (IP175D only)
- } vlans[MAX_VLANS];
- const struct register_mappings *regs;
- reg proc_mii; // phy/reg for the low level register access via swconfig
-
- char buf[80];
-};
-
-
-static int ip_phy_read(struct ip17xx_state *state, int port, int reg)
-{
- int val = mdiobus_read(state->mii_bus, port, reg);
- if (val < 0)
- pr_warning("IP17xx: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
-#ifdef DUMP_MII_IO
- else
- pr_debug("IP17xx: Read MII(%d,%d) -> %04x\n", port, reg, val);
-#endif
- return val;
-}
-
-static int ip_phy_write(struct ip17xx_state *state, int port, int reg, u16 val)
-{
- int err;
-
-#ifdef DUMP_MII_IO
- pr_debug("IP17xx: Write MII(%d,%d) <- %04x\n", port, reg, val);
-#endif
- err = mdiobus_write(state->mii_bus, port, reg, val);
- if (err < 0)
- pr_warning("IP17xx: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
- return err;
-}
-
-static int ip_phy_write_masked(struct ip17xx_state *state, int port, int reg, unsigned int mask, unsigned int data)
-{
- int val = ip_phy_read(state, port, reg);
- if (val < 0)
- return 0;
- return ip_phy_write(state, port, reg, (val & ~mask) | data);
-}
-
-static int getPhy(struct ip17xx_state *state, reg mii)
-{
- if (!REG_SUPP(mii))
- return -EFAULT;
- return ip_phy_read(state, mii.p, mii.m);
-}
-
-static int setPhy(struct ip17xx_state *state, reg mii, u16 value)
-{
- int err;
-
- if (!REG_SUPP(mii))
- return -EFAULT;
- err = ip_phy_write(state, mii.p, mii.m, value);
- if (err < 0)
- return err;
- 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 ip17xx_state *state)
-{
- int id1, id2;
- int oui_id, model_no, rev_no, chip_no;
-
- id1 = ip_phy_read(state, 0, 2);
- id2 = ip_phy_read(state, 0, 3);
- oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
- model_no = (id2 >> 4) & 0x3f;
- rev_no = id2 & 0xf;
- pr_debug("IP17xx: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
-
- if (oui_id != 0x0090c3) // No other oui_id should have reached us anyway
- return -ENODEV;
-
- if (model_no == IP175A.MODEL_NO) {
- state->regs = &IP175A;
- } else if (model_no == IP175C.MODEL_NO) {
- /*
- * Several models share the same model_no:
- * 178C has more PHYs, so we try whether the device responds to a read from PHY5
- * 175D has a new chip ID register
- * 175C has neither
- */
- if (ip_phy_read(state, 5, 2) == 0x0243) {
- state->regs = &IP178C;
- } else {
- chip_no = ip_phy_read(state, 20, 0);
- pr_debug("IP17xx: Chip ID register reads %04x\n", chip_no);
- if (chip_no == 0x175d) {
- state->regs = &IP175D;
- } else {
- state->regs = &IP175C;
- }
- }
- } else {
- pr_warning("IP17xx: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
- return -EPERM;
- }
- return 0;
-}
-
-/*** Low-level functions for the older models ***/
-
-/** Only set vlan and router flags in the switch **/
-static int ip175c_set_flags(struct ip17xx_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);
-}
-
-/** Set all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
-static int ip175c_set_state(struct ip17xx_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;
-
- 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->vlans[j].ports;
- 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 ip175c_set_flags(state);
-}
-
-/**
- * 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 ip175c_correct_vlan_state(struct ip17xx_state *state)
-{
- int i, j;
- state->num_vlans = 0;
- for (i=0; i<MAX_VLANS; i++) {
- if (state->vlans[i].ports != 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->vlans[j].ports & portmask)
- state->ports[i].shareports |= state->vlans[j].ports;
- }
- }
-}
-
-static int ip175c_update_state(struct ip17xx_state *state)
-{
- ip175c_correct_vlan_state(state);
- return ip175c_set_state(state);
-}
-
-static int ip175c_set_vlan_mode(struct ip17xx_state *state)
-{
- return ip175c_update_state(state);
-}
-
-static int ip175c_reset(struct ip17xx_state *state)
-{
- int err;
-
- if (REG_SUPP(state->regs->MODE_REG)) {
- err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
- if (err < 0)
- return err;
- err = getPhy(state, state->regs->MODE_REG);
- if (err < 0)
- return err;
- }
-
- return ip175c_update_state(state);
-}
-
-/*** Low-level functions for IP175D ***/
-
-static int ip175d_update_state(struct ip17xx_state *state)
-{
- unsigned int filter_mask = 0;
- unsigned int ports[16], add[16], rem[16];
- int i, j;
- int err = 0;
-
- for (i = 0; i < 16; i++) {
- ports[i] = 0;
- add[i] = 0;
- rem[i] = 0;
- if (!state->vlan_enabled) {
- err |= ip_phy_write(state, 22, 14+i, i+1); // default tags
- ports[i] = 0x3f;
- continue;
- }
- if (!state->vlans[i].tag) {
- // Reset the filter
- err |= ip_phy_write(state, 22, 14+i, 0); // tag
- continue;
- }
- filter_mask |= 1 << i;
- err |= ip_phy_write(state, 22, 14+i, state->vlans[i].tag);
- ports[i] = state->vlans[i].ports;
- for (j = 0; j < 6; j++) {
- if (ports[i] & (1 << j)) {
- if (state->add_tag & (1 << j))
- add[i] |= 1 << j;
- if (state->remove_tag & (1 << j))
- rem[i] |= 1 << j;
- }
- }
- }
-
- // Port masks, tag adds and removals
- for (i = 0; i < 8; i++) {
- err |= ip_phy_write(state, 23, i, ports[2*i] | (ports[2*i+1] << 8));
- err |= ip_phy_write(state, 23, 8+i, add[2*i] | (add[2*i+1] << 8));
- err |= ip_phy_write(state, 23, 16+i, rem[2*i] | (rem[2*i+1] << 8));
- }
- err |= ip_phy_write(state, 22, 10, filter_mask);
-
- // Default VLAN tag for each port
- for (i = 0; i < 6; i++)
- err |= ip_phy_write(state, 22, 4+i, state->vlans[state->ports[i].pvid].tag);
-
- return (err ? -EIO : 0);
-}
-
-static int ip175d_set_vlan_mode(struct ip17xx_state *state)
-{
- int i;
- int err = 0;
-
- if (state->vlan_enabled) {
- // VLAN classification rules: tag-based VLANs, use VID to classify,
- // drop packets that cannot be classified.
- err |= ip_phy_write_masked(state, 22, 0, 0x3fff, 0x003f);
-
- // Ingress rules: CFI=1 dropped, null VID is untagged, VID=1 passed,
- // VID=0xfff discarded, admin both tagged and untagged, ingress
- // filters enabled.
- err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
-
- // Egress rules: IGMP processing off, keep VLAN header off
- err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
- } else {
- // VLAN classification rules: everything off & clear table
- err |= ip_phy_write_masked(state, 22, 0, 0xbfff, 0x8000);
-
- // Ingress and egress rules: set to defaults
- err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
- err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
- }
-
- // Reset default VLAN for each port to 0
- for (i = 0; i < 6; i++)
- state->ports[i].pvid = 0;
-
- err |= ip175d_update_state(state);
-
- return (err ? -EIO : 0);
-}
-
-static int ip175d_reset(struct ip17xx_state *state)
-{
- int err = 0;
-
- // Disable the special tagging mode
- err |= ip_phy_write_masked(state, 21, 22, 0x0003, 0x0000);
-
- // Set 802.1q protocol type
- err |= ip_phy_write(state, 22, 3, 0x8100);
-
- state->vlan_enabled = 0;
- err |= ip175d_set_vlan_mode(state);
-
- return (err ? -EIO : 0);
-}
-
-/*** High-level functions ***/
-
-static int ip17xx_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
-
- val->value.i = state->vlan_enabled;
- return 0;
-}
-
-static void ip17xx_reset_vlan_config(struct ip17xx_state *state)
-{
- int i;
-
- state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
- state->add_tag = 0x0000;
- for (i = 0; i < MAX_VLANS; i++) {
- state->vlans[i].ports = 0x0000;
- state->vlans[i].tag = (i ? i : 16);
- }
- for (i = 0; i < MAX_PORTS; i++)
- state->ports[i].pvid = 0;
-}
-
-static int ip17xx_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int enable;
-
- 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.
- ip17xx_reset_vlan_config(state);
-
- return state->regs->set_vlan_mode(state);
-}
-
-static int ip17xx_get_ports(struct switch_dev *dev, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int b;
- int ind;
- unsigned int ports;
-
- if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
- return -EINVAL;
-
- ports = state->vlans[val->port_vlan].ports;
- 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 ip17xx_set_ports(struct switch_dev *dev, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int i;
-
- if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
- return -EINVAL;
-
- state->vlans[val->port_vlan].ports = 0;
- for (i = 0; i < val->len; i++) {
- unsigned int bitmask = (1<<val->value.ports[i].id);
- state->vlans[val->port_vlan].ports |= bitmask;
- if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
- state->add_tag |= bitmask;
- state->remove_tag &= (~bitmask);
- } else {
- state->add_tag &= (~bitmask);
- state->remove_tag |= bitmask;
- }
- }
-
- return state->regs->update_state(state);
-}
-
-static int ip17xx_apply(struct switch_dev *dev)
-{
- struct ip17xx_state *state = dev->priv;
-
- 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 ip17xx_reset(struct switch_dev *dev)
-{
- struct ip17xx_state *state = dev->priv;
- int i, 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 to be 2 msec.
- * (I don't see any mention of the 2ms delay in the IP178C spec, only
- * in IP175C, but it can't hurt.)
- */
- mdelay(2);
- }
-
- /* reset switch ports */
- for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
- err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
- if (err < 0)
- return err;
- }
-
- state->router_mode = 0;
- state->vlan_enabled = 0;
- ip17xx_reset_vlan_config(state);
-
- return state->regs->reset(state);
-}
-
-static int ip17xx_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
-
- 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;
-}
-
-static int ip17xx_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
-
- 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);
-
- return state->regs->update_state(state);
-}
-
-/** Get the current phy address */
-static int ip17xx_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_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 ip17xx_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_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 ip17xx_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_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 ip17xx_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_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 ip17xx_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_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 ip17xx_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int myval, err = -EINVAL;
-
- 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 ip17xx_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
- return 0;
-}
-
-static int ip17xx_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int vlan = val->port_vlan;
-
- if (vlan < 0 || vlan >= MAX_VLANS)
- return -EINVAL;
-
- val->value.i = state->vlans[vlan].tag;
- return 0;
-}
-
-static int ip17xx_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- int vlan = val->port_vlan;
- int tag = val->value.i;
-
- if (vlan < 0 || vlan >= MAX_VLANS)
- return -EINVAL;
-
- if (tag < 0 || tag > 4095)
- return -EINVAL;
-
- state->vlans[vlan].tag = tag;
- return state->regs->update_state(state);
-}
-
-static int ip17xx_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- 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(state, nr, 0);
- if (ctrl < 0)
- return -EIO;
-
- ctrl &= (~(1<<12));
- ctrl &= (~(1<<13));
- ctrl |= (autoneg<<12);
- ctrl |= (speed<<13);
-
- return ip_phy_write(state, nr, 0, ctrl);
-}
-
-static int ip17xx_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- 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(state, nr, 1);
- speed = ip_phy_read(state, 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 ip17xx_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
-{
- struct ip17xx_state *state = dev->priv;
- 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(state, nr, 0);
- status = ip_phy_read(state, nr, 1);
- speed = ip_phy_read(state, 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 ip17xx_get_pvid(struct switch_dev *dev, int port, int *val)
-{
- struct ip17xx_state *state = dev->priv;
-
- *val = state->ports[port].pvid;
- return 0;
-}
-
-static int ip17xx_set_pvid(struct switch_dev *dev, int port, int val)
-{
- struct ip17xx_state *state = dev->priv;
-
- if (val < 0 || val >= MAX_VLANS)
- return -EINVAL;
-
- state->ports[port].pvid = val;
- return state->regs->update_state(state);
-}
-
-
-enum Ports {
- IP17XX_PORT_STATUS,
- IP17XX_PORT_LINK,
- IP17XX_PORT_TAGGED,
- IP17XX_PORT_PVID,
-};
-
-enum Globals {
- IP17XX_ENABLE_VLAN,
- IP17XX_GET_NAME,
- IP17XX_REGISTER_PHY,
- IP17XX_REGISTER_MII,
- IP17XX_REGISTER_VALUE,
- IP17XX_REGISTER_ERRNO,
-};
-
-enum Vlans {
- IP17XX_VLAN_TAG,
-};
-
-static const struct switch_attr ip17xx_global[] = {
- [IP17XX_ENABLE_VLAN] = {
- .id = IP17XX_ENABLE_VLAN,
- .type = SWITCH_TYPE_INT,
- .name = "enable_vlan",
- .description = "Flag to enable or disable VLANs and tagging",
- .get = ip17xx_get_enable_vlan,
- .set = ip17xx_set_enable_vlan,
- },
- [IP17XX_GET_NAME] = {
- .id = IP17XX_GET_NAME,
- .type = SWITCH_TYPE_STRING,
- .description = "Returns the type of IC+ chip.",
- .name = "name",
- .get = ip17xx_read_name,
- .set = NULL,
- },
- /* jal: added for low level debugging etc. */
- [IP17XX_REGISTER_PHY] = {
- .id = IP17XX_REGISTER_PHY,
- .type = SWITCH_TYPE_INT,
- .description = "Direct register access: set PHY (0-4, or 29,30,31)",
- .name = "phy",
- .get = ip17xx_get_phy,
- .set = ip17xx_set_phy,
- },
- [IP17XX_REGISTER_MII] = {
- .id = IP17XX_REGISTER_MII,
- .type = SWITCH_TYPE_INT,
- .description = "Direct register access: set MII register number (0-31)",
- .name = "reg",
- .get = ip17xx_get_reg,
- .set = ip17xx_set_reg,
- },
- [IP17XX_REGISTER_VALUE] = {
- .id = IP17XX_REGISTER_VALUE,
- .type = SWITCH_TYPE_INT,
- .description = "Direct register access: read/write to register (0-65535)",
- .name = "val",
- .get = ip17xx_get_val,
- .set = ip17xx_set_val,
- },
-};
-
-static const struct switch_attr ip17xx_vlan[] = {
- [IP17XX_VLAN_TAG] = {
- .id = IP17XX_VLAN_TAG,
- .type = SWITCH_TYPE_INT,
- .description = "VLAN tag (0-4095) [IP175D only]",
- .name = "tag",
- .get = ip17xx_get_tag,
- .set = ip17xx_set_tag,
- }
-};
-
-static const struct switch_attr ip17xx_port[] = {
- [IP17XX_PORT_STATUS] = {
- .id = IP17XX_PORT_STATUS,
- .type = SWITCH_TYPE_STRING,
- .description = "Returns Detailed port status",
- .name = "status",
- .get = ip17xx_get_port_status,
- .set = NULL,
- },
- [IP17XX_PORT_LINK] = {
- .id = IP17XX_PORT_LINK,
- .type = SWITCH_TYPE_INT,
- .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
- .name = "link",
- .get = ip17xx_get_port_speed,
- .set = ip17xx_set_port_speed,
- },
- [IP17XX_PORT_TAGGED] = {
- .id = IP17XX_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 = ip17xx_get_tagged,
- .set = ip17xx_set_tagged,
- },
-};
-
-static int ip17xx_probe(struct phy_device *pdev)
-{
- struct ip17xx_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 = ip17xx_global;
- dev->attr_global.n_attr = ARRAY_SIZE(ip17xx_global);
- dev->attr_port.attr = ip17xx_port;
- dev->attr_port.n_attr = ARRAY_SIZE(ip17xx_port);
- dev->attr_vlan.attr = ip17xx_vlan;
- dev->attr_vlan.n_attr = ARRAY_SIZE(ip17xx_vlan);
-
- dev->get_port_pvid = ip17xx_get_pvid;
- dev->set_port_pvid = ip17xx_set_pvid;
- dev->get_vlan_ports = ip17xx_get_ports;
- dev->set_vlan_ports = ip17xx_set_ports;
- dev->apply_config = ip17xx_apply;
- dev->reset_switch = ip17xx_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;
-
- pr_info("IP17xx: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
- return 0;
-
-error:
- kfree(state);
- return err;
-}
-
-static int ip17xx_config_init(struct phy_device *pdev)
-{
- struct ip17xx_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;
-
- ip17xx_reset(&state->dev);
-
- state->registered = true;
-
- pdev->state = PHY_RUNNING;
- pdev->speed = SPEED_100;
- pdev->duplex = DUPLEX_FULL;
- pdev->pause = pdev->asym_pause = 0;
- netif_carrier_on(pdev->attached_dev);
-
- return 0;
-}
-
-static void ip17xx_remove(struct phy_device *pdev)
-{
- struct ip17xx_state *state = pdev->priv;
-
- if (state->registered)
- unregister_switch(&state->dev);
- kfree(state);
-}
-
-static int ip17xx_config_aneg(struct phy_device *pdev)
-{
- return 0;
-}
-
-static int ip17xx_read_status(struct phy_device *pdev)
-{
- return 0;
-}
-
-static struct phy_driver ip17xx_driver = {
- .name = "IC+ IP17xx",
- .phy_id = 0x02430c00,
- .phy_id_mask = 0x0ffffc00,
- .features = PHY_BASIC_FEATURES,
- .probe = ip17xx_probe,
- .remove = ip17xx_remove,
- .config_init = ip17xx_config_init,
- .config_aneg = ip17xx_config_aneg,
- .read_status = ip17xx_read_status,
- .driver = { .owner = THIS_MODULE },
-};
-
-static struct phy_driver ip175a_driver = {
- .name = "IC+ IP175A",
- .phy_id = 0x02430c50,
- .phy_id_mask = 0x0ffffff0,
- .features = PHY_BASIC_FEATURES,
- .probe = ip17xx_probe,
- .remove = ip17xx_remove,
- .config_init = ip17xx_config_init,
- .config_aneg = ip17xx_config_aneg,
- .read_status = ip17xx_read_status,
- .driver = { .owner = THIS_MODULE },
-};
-
-
-int __init ip17xx_init(void)
-{
- int ret;
-
- ret = phy_driver_register(&ip175a_driver);
- if (ret < 0)
- return ret;
-
- return phy_driver_register(&ip17xx_driver);
-}
-
-void __exit ip17xx_exit(void)
-{
- phy_driver_unregister(&ip17xx_driver);
- phy_driver_unregister(&ip175a_driver);
-}
-
-MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
-MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
-MODULE_LICENSE("GPL");
-
-module_init(ip17xx_init);
-module_exit(ip17xx_exit);
projects / openwrt.git / commitdiff