diff options
Diffstat (limited to 'target/linux/generic-2.6/files/drivers/net/phy/ip17xx.c')
| -rw-r--r-- | target/linux/generic-2.6/files/drivers/net/phy/ip17xx.c | 1399 |
1 files changed, 0 insertions, 1399 deletions
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/ip17xx.c b/target/linux/generic-2.6/files/drivers/net/phy/ip17xx.c deleted file mode 100644 index 262123a57..000000000 --- a/target/linux/generic-2.6/files/drivers/net/phy/ip17xx.c +++ /dev/null @@ -1,1399 +0,0 @@ -/* - * ip17xx.c: Swconfig configuration for IC+ IP17xx switch family - * - * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com> - * Copyright (C) 2008, 2010 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; - - err = register_switch(&state->dev, dev); - if (err < 0) - return err; - - state->registered = true; - ip17xx_reset(&state->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_aneg_done(struct phy_device *pdev) -{ - return BMSR_ANEGCOMPLETE; -} - -static int ip17xx_update_link(struct phy_device *pdev) -{ - pdev->link = 1; - return 0; -} - -static int ip17xx_read_status(struct phy_device *pdev) -{ - pdev->speed = SPEED_100; - pdev->duplex = DUPLEX_FULL; - pdev->pause = pdev->asym_pause = 0; - pdev->link = 1; - - 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, - .aneg_done = ip17xx_aneg_done, - .update_link = ip17xx_update_link, - .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, - .aneg_done = ip17xx_aneg_done, - .update_link = ip17xx_update_link, - .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_AUTHOR("Martin Mares <mj@ucw.cz>"); -MODULE_LICENSE("GPL"); - -module_init(ip17xx_init); -module_exit(ip17xx_exit); |