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1321 lines
31 KiB
C
1321 lines
31 KiB
C
/*
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* swconfig-ip175c.c: Swconfig configuration for IC+ IP175C switch
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*
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* Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
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* Copyright (C) 2008 Martin Mares <mj@ucw.cz>
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* Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/skbuff.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#include <linux/delay.h>
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#include <linux/switch.h>
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#define MAX_VLANS 16
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#define MAX_PORTS 9
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typedef struct ip175c_reg {
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u16 p; // phy
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u16 m; // mii
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} reg;
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typedef char bitnum;
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#define NOTSUPPORTED {-1,-1}
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#define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
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/*********** CONSTANTS ***********/
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struct register_mappings {
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char *NAME;
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u16 MODEL_NO; // compare to bits 4-9 of MII register 0,3.
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bitnum NUM_PORTS;
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bitnum CPU_PORT;
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/* The default VLAN for each port.
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Default: 0x0001 for Ports 0,1,2,3
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0x0002 for Ports 4,5 */
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reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
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/* These ports are tagged.
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Default: 0x00 */
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reg ADD_TAG_REG;
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reg REMOVE_TAG_REG;
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bitnum ADD_TAG_BIT[MAX_PORTS];
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/* These ports are untagged.
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Default: 0x00 (i.e. do not alter any VLAN tags...)
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Maybe set to 0 if user disables VLANs. */
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bitnum REMOVE_TAG_BIT[MAX_PORTS];
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/* Port M and Port N are on the same VLAN.
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Default: All ports on all VLANs. */
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// Use register {29, 19+N/2}
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reg VLAN_LOOKUP_REG;
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// Port 5 uses register {30, 18} but same as odd bits.
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reg VLAN_LOOKUP_REG_5; // in a different register on IP175C.
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bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
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bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
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/* This VLAN corresponds to which ports.
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Default: 0x2f,0x30,0x3f,0x3f... */
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reg TAG_VLAN_MASK_REG;
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bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
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bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
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int RESET_VAL;
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reg RESET_REG;
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reg MODE_REG;
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int MODE_VAL;
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/* General flags */
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reg ROUTER_CONTROL_REG;
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reg VLAN_CONTROL_REG;
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bitnum TAG_VLAN_BIT;
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bitnum ROUTER_EN_BIT;
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bitnum NUMLAN_GROUPS_MAX;
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bitnum NUMLAN_GROUPS_BIT;
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reg MII_REGISTER_EN;
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bitnum MII_REGISTER_EN_BIT;
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// set to 1 for 178C, 0 for 175C.
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bitnum SIMPLE_VLAN_REGISTERS; // 175C has two vlans per register but 178C has only one.
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};
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static const struct register_mappings IP178C = {
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.NAME = "IP178C",
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.MODEL_NO = 0x18,
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.VLAN_DEFAULT_TAG_REG = {
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{30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
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{30,9},{30,10},{30,11},
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},
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.ADD_TAG_REG = {30,12},
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.ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
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.REMOVE_TAG_REG = {30,13},
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.REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
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.SIMPLE_VLAN_REGISTERS = 1,
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.VLAN_LOOKUP_REG = {31,0},// +N
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.VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
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.VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
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.VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
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.TAG_VLAN_MASK_REG = {30,14}, // +N
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.TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
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.TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
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.RESET_VAL = 0x55AA,
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.RESET_REG = {30,0},
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.MODE_VAL = 0,
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.MODE_REG = NOTSUPPORTED,
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.ROUTER_CONTROL_REG = {30,30},
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.ROUTER_EN_BIT = 11,
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.NUMLAN_GROUPS_MAX = 8,
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.NUMLAN_GROUPS_BIT = 8, // {0-2}
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.VLAN_CONTROL_REG = {30,13},
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.TAG_VLAN_BIT = 3,
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.CPU_PORT = 8,
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.NUM_PORTS = 9,
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.MII_REGISTER_EN = NOTSUPPORTED,
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};
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static const struct register_mappings IP175C = {
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.NAME = "IP175C",
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.MODEL_NO = 0x18,
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.VLAN_DEFAULT_TAG_REG = {
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{29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
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NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
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},
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.ADD_TAG_REG = {29,23},
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.REMOVE_TAG_REG = {29,23},
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.ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
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.REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
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.SIMPLE_VLAN_REGISTERS = 0,
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.VLAN_LOOKUP_REG = {29,19},// +N/2
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.VLAN_LOOKUP_REG_5 = {30,18},
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.VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
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.VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
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.TAG_VLAN_MASK_REG = {30,1}, // +N/2
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.TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
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.TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
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.RESET_VAL = 0x175C,
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.RESET_REG = {30,0},
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.MODE_VAL = 0x175C,
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.MODE_REG = {29,31},
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.ROUTER_CONTROL_REG = {30,9},
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.ROUTER_EN_BIT = 3,
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.NUMLAN_GROUPS_MAX = 8,
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.NUMLAN_GROUPS_BIT = 0, // {0-2}
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.VLAN_CONTROL_REG = {30,9},
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.TAG_VLAN_BIT = 7,
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.NUM_PORTS = 6,
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.CPU_PORT = 5,
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.MII_REGISTER_EN = NOTSUPPORTED,
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};
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static const struct register_mappings IP175A = {
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.NAME = "IP175A",
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.MODEL_NO = 0x05,
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.VLAN_DEFAULT_TAG_REG = {
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{0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
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NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
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},
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.ADD_TAG_REG = {0,23},
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.REMOVE_TAG_REG = {0,23},
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.ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
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.REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
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.SIMPLE_VLAN_REGISTERS = 1,
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// Only programmable via. EEPROM
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.VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
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.VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
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.VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
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.VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
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.TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2
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.TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
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.TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
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.RESET_VAL = -1,
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.RESET_REG = NOTSUPPORTED,
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.MODE_VAL = 0,
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.MODE_REG = NOTSUPPORTED,
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.ROUTER_CONTROL_REG = NOTSUPPORTED,
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.VLAN_CONTROL_REG = NOTSUPPORTED,
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.TAG_VLAN_BIT = -1,
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.ROUTER_EN_BIT = -1,
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.NUMLAN_GROUPS_MAX = -1,
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.NUMLAN_GROUPS_BIT = -1, // {0-2}
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.NUM_PORTS = 6,
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.CPU_PORT = 5,
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.MII_REGISTER_EN = {0, 12},
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.MII_REGISTER_EN_BIT = 7,
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};
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struct ip175c_state {
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struct switch_dev dev;
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struct mii_bus *mii_bus;
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bool registered;
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int router_mode; // ROUTER_EN
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int vlan_enabled; // TAG_VLAN_EN
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struct port_state {
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u16 pvid;
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unsigned int shareports;
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} ports[MAX_PORTS];
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unsigned int add_tag;
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unsigned int remove_tag;
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int num_vlans;
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unsigned int vlan_ports[MAX_VLANS];
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const struct register_mappings *regs;
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reg proc_mii; /*!< phy/reg for the low level register access via /proc */
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char buf[80];
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};
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static int ip_phy_read(struct mii_bus *bus, int port, int reg)
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{
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int val;
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mutex_lock(&bus->mdio_lock);
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val = bus->read(bus, port, reg);
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mutex_unlock(&bus->mdio_lock);
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return val;
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}
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static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
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{
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int err;
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mutex_lock(&bus->mdio_lock);
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err = bus->write(bus, port, reg, val);
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mutex_unlock(&bus->mdio_lock);
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return err;
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}
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static int getPhy (struct ip175c_state *state, reg mii)
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{
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struct mii_bus *bus = state->mii_bus;
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int val;
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if (!REG_SUPP(mii))
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return -EFAULT;
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val = ip_phy_read(bus, mii.p, mii.m);
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if (val < 0)
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pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
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return val;
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}
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static int setPhy (struct ip175c_state *state, reg mii, u16 value)
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{
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struct mii_bus *bus = state->mii_bus;
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int err;
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if (!REG_SUPP(mii))
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return -EFAULT;
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err = ip_phy_write(bus, mii.p, mii.m, value);
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if (err < 0) {
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pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
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return err;
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}
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mdelay(2);
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getPhy(state, mii);
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return 0;
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}
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/**
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* These two macros are to simplify the mapping of logical bits to the bits in hardware.
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* NOTE: these macros will return if there is an error!
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*/
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#define GET_PORT_BITS(state, bits, addr, bit_lookup) \
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do { \
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int i, val = getPhy((state), (addr)); \
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if (val < 0) \
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return val; \
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(bits) = 0; \
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for (i = 0; i < MAX_PORTS; i++) { \
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if ((bit_lookup)[i] == -1) continue; \
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if (val & (1<<(bit_lookup)[i])) \
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(bits) |= (1<<i); \
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} \
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} while (0)
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#define SET_PORT_BITS(state, bits, addr, bit_lookup) \
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do { \
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int i, val = getPhy((state), (addr)); \
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if (val < 0) \
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return val; \
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for (i = 0; i < MAX_PORTS; i++) { \
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unsigned int newmask = ((bits)&(1<<i)); \
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if ((bit_lookup)[i] == -1) continue; \
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val &= ~(1<<(bit_lookup)[i]); \
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val |= ((newmask>>i)<<(bit_lookup)[i]); \
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} \
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val = setPhy((state), (addr), val); \
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if (val < 0) \
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return val; \
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} while (0)
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static int get_model(struct ip175c_state *state)
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{
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reg oui_id_reg = {0, 2};
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int oui_id;
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reg model_no_reg = {0, 3};
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int model_no, model_no_orig;
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// 175 and 178 have the same oui ID.
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reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
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int is_178c = 0;
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oui_id = getPhy(state, oui_id_reg);
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if (oui_id != 0x0243) {
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// non
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return -ENODEV; // Not a IC+ chip.
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}
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oui_id = getPhy(state, oui_id_reg_178c);
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if (oui_id == 0x0243) {
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is_178c = 1;
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}
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model_no_orig = getPhy(state, model_no_reg);
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if (model_no_orig < 0) {
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return -ENODEV;
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}
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model_no = model_no_orig >> 4; // shift out revision number.
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model_no &= 0x3f; // only take the model number (low 6 bits).
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if (model_no == IP175A.MODEL_NO) {
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state->regs = &IP175A;
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} else if (model_no == IP175C.MODEL_NO) {
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if (is_178c) {
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state->regs = &IP178C;
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} else {
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state->regs = &IP175C;
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}
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} else {
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printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
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return -EPERM;
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}
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return 0;
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}
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/** Get only the vlan and router flags on the router **/
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static int get_flags(struct ip175c_state *state)
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{
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int val;
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state->router_mode = 0;
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state->vlan_enabled = -1; // hack
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state->num_vlans = 0;
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if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
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return 0; // not an error if it doesn't support enable vlan.
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}
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val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
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if (val < 0) {
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return val;
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}
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if (state->regs->ROUTER_EN_BIT >= 0)
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state->router_mode = ((val>>state->regs->ROUTER_EN_BIT) & 1);
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if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
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state->num_vlans = (val >> state->regs->NUMLAN_GROUPS_BIT);
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state->num_vlans &= (state->regs->NUMLAN_GROUPS_MAX-1);
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state->num_vlans+=1; // does not include WAN.
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}
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val = getPhy(state, state->regs->VLAN_CONTROL_REG);
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if (val < 0) {
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return 0;
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}
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if (state->regs->TAG_VLAN_BIT >= 0)
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state->vlan_enabled = ((val>>state->regs->TAG_VLAN_BIT) & 1);
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return 0;
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}
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/** Get all state variables for VLAN mappings and port-based tagging. **/
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static int get_state(struct ip175c_state *state)
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{
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int i, j;
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int ret;
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ret = get_flags(state);
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if (ret < 0) {
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return ret;
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}
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GET_PORT_BITS(state, state->remove_tag,
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state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
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GET_PORT_BITS(state, state->add_tag,
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state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
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if (state->vlan_enabled == -1) {
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// not sure how to get this...
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state->vlan_enabled = (!state->remove_tag && !state->add_tag);
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}
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if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
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for (j=0; j<MAX_PORTS; j++) {
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state->ports[j].shareports = 0; // initialize them in case.
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}
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for (j=0; j<state->regs->NUM_PORTS; j++) {
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reg addr;
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const bitnum *bit_lookup = (j%2==0)?
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state->regs->VLAN_LOOKUP_EVEN_BIT:
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state->regs->VLAN_LOOKUP_ODD_BIT;
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addr = state->regs->VLAN_LOOKUP_REG;
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if (state->regs->SIMPLE_VLAN_REGISTERS) {
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addr.m += j;
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} else {
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switch (j) {
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case 0:
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case 1:
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break;
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case 2:
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case 3:
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addr.m+=1;
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break;
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case 4:
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addr.m+=2;
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break;
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case 5:
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addr = state->regs->VLAN_LOOKUP_REG_5;
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break;
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}
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}
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if (REG_SUPP(addr)) {
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GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
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}
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}
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} else {
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for (j=0; j<MAX_PORTS; j++) {
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state->ports[j].shareports = 0xff;
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}
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|
}
|
|
|
|
for (i=0; i<MAX_PORTS; i++) {
|
|
if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
|
|
int val = getPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i]);
|
|
if (val < 0) {
|
|
return val;
|
|
}
|
|
state->ports[i].pvid = val;
|
|
} else {
|
|
state->ports[i].pvid = 0;
|
|
}
|
|
}
|
|
|
|
if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
|
|
for (j=0; j<MAX_VLANS; j++) {
|
|
reg addr = state->regs->TAG_VLAN_MASK_REG;
|
|
const bitnum *bit_lookup = (j%2==0)?
|
|
state->regs->TAG_VLAN_MASK_EVEN_BIT:
|
|
state->regs->TAG_VLAN_MASK_ODD_BIT;
|
|
if (state->regs->SIMPLE_VLAN_REGISTERS) {
|
|
addr.m += j;
|
|
} else {
|
|
addr.m += j/2;
|
|
}
|
|
GET_PORT_BITS(state, state->vlan_ports[j], addr, bit_lookup);
|
|
}
|
|
} else {
|
|
for (j=0; j<MAX_VLANS; j++) {
|
|
state->vlan_ports[j] = 0;
|
|
for (i=0; i<state->regs->NUM_PORTS; i++) {
|
|
if ((state->ports[i].pvid == j) ||
|
|
(state->ports[i].pvid == 0)) {
|
|
state->vlan_ports[j] |= (1<<i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/** Only update vlan and router flags in the switch **/
|
|
static int update_flags(struct ip175c_state *state)
|
|
{
|
|
int val;
|
|
|
|
if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
|
|
return 0;
|
|
}
|
|
|
|
val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
|
|
if (val < 0) {
|
|
return val;
|
|
}
|
|
if (state->regs->ROUTER_EN_BIT >= 0) {
|
|
if (state->router_mode) {
|
|
val |= (1<<state->regs->ROUTER_EN_BIT);
|
|
} else {
|
|
val &= (~(1<<state->regs->ROUTER_EN_BIT));
|
|
}
|
|
}
|
|
if (state->regs->TAG_VLAN_BIT >= 0) {
|
|
if (state->vlan_enabled) {
|
|
val |= (1<<state->regs->TAG_VLAN_BIT);
|
|
} else {
|
|
val &= (~(1<<state->regs->TAG_VLAN_BIT));
|
|
}
|
|
}
|
|
if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
|
|
val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
|
|
if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
|
|
val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
|
|
} else if (state->num_vlans >= 1) {
|
|
val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
|
|
}
|
|
}
|
|
return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
|
|
}
|
|
|
|
/** Update all VLAN and port state. Usually you should call "correct_vlan_state" first. **/
|
|
static int update_state(struct ip175c_state *state)
|
|
{
|
|
int j;
|
|
int i;
|
|
SET_PORT_BITS(state, state->add_tag,
|
|
state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
|
|
SET_PORT_BITS(state, state->remove_tag,
|
|
state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
|
|
|
|
if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
|
|
for (j=0; j<state->regs->NUM_PORTS; j++) {
|
|
reg addr;
|
|
const bitnum *bit_lookup = (j%2==0)?
|
|
state->regs->VLAN_LOOKUP_EVEN_BIT:
|
|
state->regs->VLAN_LOOKUP_ODD_BIT;
|
|
|
|
// duplicate code -- sorry
|
|
addr = state->regs->VLAN_LOOKUP_REG;
|
|
if (state->regs->SIMPLE_VLAN_REGISTERS) {
|
|
addr.m += j;
|
|
} else {
|
|
switch (j) {
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
case 3:
|
|
addr.m+=1;
|
|
break;
|
|
case 4:
|
|
addr.m+=2;
|
|
break;
|
|
case 5:
|
|
addr = state->regs->VLAN_LOOKUP_REG_5;
|
|
break;
|
|
default:
|
|
addr.m = -1; // shouldn't get here, but...
|
|
break;
|
|
}
|
|
}
|
|
//printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
|
|
if (REG_SUPP(addr)) {
|
|
SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
|
|
}
|
|
}
|
|
}
|
|
if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
|
|
for (j=0; j<MAX_VLANS; j++) {
|
|
reg addr = state->regs->TAG_VLAN_MASK_REG;
|
|
const bitnum *bit_lookup = (j%2==0)?
|
|
state->regs->TAG_VLAN_MASK_EVEN_BIT:
|
|
state->regs->TAG_VLAN_MASK_ODD_BIT;
|
|
unsigned int vlan_mask;
|
|
if (state->regs->SIMPLE_VLAN_REGISTERS) {
|
|
addr.m += j;
|
|
} else {
|
|
addr.m += j/2;
|
|
}
|
|
vlan_mask = state->vlan_ports[j];
|
|
SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
|
|
}
|
|
}
|
|
|
|
for (i=0; i<MAX_PORTS; i++) {
|
|
if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
|
|
int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
|
|
state->ports[i].pvid);
|
|
if (err < 0) {
|
|
return err;
|
|
}
|
|
}
|
|
}
|
|
|
|
return update_flags(state);
|
|
|
|
// software reset: 30.0 = 0x175C
|
|
// wait 2ms
|
|
// reset ports 0,1,2,3,4
|
|
}
|
|
|
|
/*
|
|
Uses only the VLAN port mask and the add tag mask to generate the other fields:
|
|
which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
|
|
*/
|
|
static void correct_vlan_state(struct ip175c_state *state)
|
|
{
|
|
int i, j;
|
|
state->num_vlans = 0;
|
|
for (i=0; i<MAX_VLANS; i++) {
|
|
if (state->vlan_ports[i] != 0) {
|
|
state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
|
|
}
|
|
}
|
|
|
|
|
|
|
|
for (i=0; i<state->regs->NUM_PORTS; i++) {
|
|
unsigned int portmask = (1<<i);
|
|
if (!state->vlan_enabled) {
|
|
// share with everybody!
|
|
state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
|
|
continue;
|
|
}
|
|
state->ports[i].shareports = portmask;
|
|
for (j=0; j<MAX_VLANS; j++) {
|
|
if (state->vlan_ports[j] & portmask)
|
|
state->ports[i].shareports |= state->vlan_ports[j];
|
|
}
|
|
}
|
|
state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
|
|
}
|
|
|
|
static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
|
|
err = get_state(state); // may be set in get_state.
|
|
if (err < 0)
|
|
return err;
|
|
val->value.i = state->vlan_enabled;
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
int enable;
|
|
int i;
|
|
|
|
err = get_state(state);
|
|
if (err < 0)
|
|
return err;
|
|
enable = val->value.i;
|
|
|
|
if (state->vlan_enabled == enable) {
|
|
// do not change any state.
|
|
return 0;
|
|
}
|
|
state->vlan_enabled = enable;
|
|
|
|
// Otherwise, if we are switching state, set fields to a known default.
|
|
state->remove_tag = 0x0000;
|
|
state->add_tag = 0x0000;
|
|
for (i = 0; i < MAX_PORTS; i++)
|
|
state->ports[i].shareports = 0xffff;
|
|
|
|
for (i = 0; i < MAX_VLANS; i++)
|
|
state->vlan_ports[i] = 0x0;
|
|
|
|
if (state->vlan_enabled) {
|
|
// updates other fields only based off vlan_ports and add_tag fields.
|
|
// Note that by default, no ports are in any vlans.
|
|
correct_vlan_state(state);
|
|
}
|
|
// ensure sane defaults?
|
|
return update_state(state);
|
|
}
|
|
|
|
static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
int b;
|
|
int ind;
|
|
unsigned int ports;
|
|
|
|
if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
|
|
return -EINVAL;
|
|
|
|
err = get_state(state);
|
|
if (err<0)
|
|
return err;
|
|
|
|
ports = state->vlan_ports[val->port_vlan];
|
|
b = 0;
|
|
ind = 0;
|
|
while (b < MAX_PORTS) {
|
|
if (ports&1) {
|
|
int istagged = ((state->add_tag >> b) & 1);
|
|
val->value.ports[ind].id = b;
|
|
val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
|
|
ind++;
|
|
}
|
|
b++;
|
|
ports >>= 1;
|
|
}
|
|
val->len = ind;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int i;
|
|
int err;
|
|
|
|
if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
|
|
return -EINVAL;
|
|
|
|
err = get_state(state);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
state->vlan_ports[val->port_vlan] = 0;
|
|
for (i = 0; i < val->len; i++) {
|
|
int bitmask = (1<<val->value.ports[i].id);
|
|
state->vlan_ports[val->port_vlan] |= bitmask;
|
|
if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
|
|
state->add_tag |= bitmask;
|
|
} else {
|
|
state->add_tag &= (~bitmask);
|
|
}
|
|
}
|
|
|
|
correct_vlan_state(state);
|
|
err = update_state(state);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int ip175c_apply(struct switch_dev *dev)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
|
|
err = get_flags(state);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (REG_SUPP(state->regs->MII_REGISTER_EN)){
|
|
int val = getPhy(state, state->regs->MII_REGISTER_EN);
|
|
if (val < 0) {
|
|
return val;
|
|
}
|
|
val |= (1<<state->regs->MII_REGISTER_EN_BIT);
|
|
return setPhy(state, state->regs->MII_REGISTER_EN, val);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_reset(struct switch_dev *dev)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int i, err;
|
|
|
|
err = get_flags(state);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (REG_SUPP(state->regs->RESET_REG)) {
|
|
err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
|
|
if (err < 0)
|
|
return err;
|
|
err = getPhy(state, state->regs->RESET_REG);
|
|
|
|
/* data sheet specifies reset period is 2 msec
|
|
(don't see any mention of the 2ms delay in the IP178C spec, only
|
|
in IP175C, but it can't hurt.) */
|
|
mdelay(2);
|
|
}
|
|
|
|
if (REG_SUPP(state->regs->MODE_REG)) {
|
|
err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
|
|
if (err < 0)
|
|
return err;
|
|
err = getPhy(state, state->regs->MODE_REG);
|
|
}
|
|
|
|
/* reset switch ports */
|
|
for (i = 0; i < 5; i++) {
|
|
err = state->mii_bus->write(state->mii_bus, i,
|
|
MII_BMCR, BMCR_RESET);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! get the current register number */
|
|
static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
|
|
err = get_state(state);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (state->add_tag & (1<<val->port_vlan)) {
|
|
if (state->remove_tag & (1<<val->port_vlan))
|
|
val->value.i = 3; // shouldn't ever happen.
|
|
else
|
|
val->value.i = 1;
|
|
} else {
|
|
if (state->remove_tag & (1<<val->port_vlan))
|
|
val->value.i = 0;
|
|
else
|
|
val->value.i = 2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*! set a new register address for low level access to registers */
|
|
static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int err;
|
|
|
|
err = get_state(state);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
state->add_tag &= ~(1<<val->port_vlan);
|
|
state->remove_tag &= ~(1<<val->port_vlan);
|
|
|
|
if (val->value.i == 0)
|
|
state->remove_tag |= (1<<val->port_vlan);
|
|
if (val->value.i == 1)
|
|
state->add_tag |= (1<<val->port_vlan);
|
|
|
|
SET_PORT_BITS(state, state->add_tag,
|
|
state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
|
|
SET_PORT_BITS(state, state->remove_tag,
|
|
state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/* low level /proc procedures */
|
|
|
|
/*! get the current phy address */
|
|
static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
|
|
val->value.i = state->proc_mii.p;
|
|
return 0;
|
|
}
|
|
|
|
/*! set a new phy address for low level access to registers */
|
|
static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int new_reg = val->value.i;
|
|
|
|
if (new_reg < 0 || new_reg > 31)
|
|
state->proc_mii.p = (u16)-1;
|
|
else
|
|
state->proc_mii.p = (u16)new_reg;
|
|
return 0;
|
|
}
|
|
|
|
/*! get the current register number */
|
|
static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
|
|
val->value.i = state->proc_mii.m;
|
|
return 0;
|
|
}
|
|
|
|
/*! set a new register address for low level access to registers */
|
|
static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int new_reg = val->value.i;
|
|
|
|
if (new_reg < 0 || new_reg > 31)
|
|
state->proc_mii.m = (u16)-1;
|
|
else
|
|
state->proc_mii.m = (u16)new_reg;
|
|
return 0;
|
|
}
|
|
|
|
/*! get the register content of state->proc_mii */
|
|
static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int retval = -EINVAL;
|
|
if (REG_SUPP(state->proc_mii))
|
|
retval = getPhy(state, state->proc_mii);
|
|
|
|
if (retval < 0) {
|
|
return retval;
|
|
} else {
|
|
val->value.i = retval;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*! write a value to the register defined by phy/reg above */
|
|
static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
int myval, err = 0;
|
|
|
|
myval = val->value.i;
|
|
if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
|
|
err = setPhy(state, state->proc_mii, (u16)myval);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
struct mii_bus *bus = state->mii_bus;
|
|
int nr = val->port_vlan;
|
|
int ctrl;
|
|
int autoneg;
|
|
int speed;
|
|
if (val->value.i == 100) {
|
|
speed = 1;
|
|
autoneg = 0;
|
|
} else if (val->value.i == 10) {
|
|
speed = 0;
|
|
autoneg = 0;
|
|
} else {
|
|
autoneg = 1;
|
|
speed = 1;
|
|
}
|
|
|
|
/* can't set speed for cpu port */
|
|
if (nr == state->regs->CPU_PORT)
|
|
return -EINVAL;
|
|
|
|
if (nr >= dev->ports || nr < 0)
|
|
return -EINVAL;
|
|
|
|
ctrl = ip_phy_read(bus, nr, 0);
|
|
if (ctrl < 0)
|
|
return -EIO;
|
|
|
|
ctrl &= (~(1<<12));
|
|
ctrl &= (~(1<<13));
|
|
ctrl |= (autoneg<<12);
|
|
ctrl |= (speed<<13);
|
|
|
|
return ip_phy_write(bus, nr, 0, ctrl);
|
|
}
|
|
|
|
static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
struct mii_bus *bus = state->mii_bus;
|
|
int nr = val->port_vlan;
|
|
int speed, status;
|
|
|
|
if (nr == state->regs->CPU_PORT) {
|
|
val->value.i = 100;
|
|
return 0;
|
|
}
|
|
|
|
if (nr >= dev->ports || nr < 0)
|
|
return -EINVAL;
|
|
|
|
status = ip_phy_read(bus, nr, 1);
|
|
speed = ip_phy_read(bus, nr, 18);
|
|
if (status < 0 || speed < 0)
|
|
return -EIO;
|
|
|
|
if (status & 4)
|
|
val->value.i = ((speed & (1<<11)) ? 100 : 10);
|
|
else
|
|
val->value.i = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
struct mii_bus *bus = state->mii_bus;
|
|
int ctrl, speed, status;
|
|
int nr = val->port_vlan;
|
|
int len;
|
|
char *buf = state->buf; // fixed-length at 80.
|
|
|
|
if (nr == state->regs->CPU_PORT) {
|
|
sprintf(buf, "up, 100 Mbps, cpu port");
|
|
val->value.s = buf;
|
|
return 0;
|
|
}
|
|
|
|
if (nr >= dev->ports || nr < 0)
|
|
return -EINVAL;
|
|
|
|
ctrl = ip_phy_read(bus, nr, 0);
|
|
status = ip_phy_read(bus, nr, 1);
|
|
speed = ip_phy_read(bus, nr, 18);
|
|
if (ctrl < 0 || status < 0 || speed < 0)
|
|
return -EIO;
|
|
|
|
if (status & 4)
|
|
len = sprintf(buf, "up, %d Mbps, %s duplex",
|
|
((speed & (1<<11)) ? 100 : 10),
|
|
((speed & (1<<10)) ? "full" : "half"));
|
|
else
|
|
len = sprintf(buf, "down");
|
|
|
|
if (ctrl & (1<<12)) {
|
|
len += sprintf(buf+len, ", auto-negotiate");
|
|
if (!(status & (1<<5)))
|
|
len += sprintf(buf+len, " (in progress)");
|
|
} else {
|
|
len += sprintf(buf+len, ", fixed speed (%d)",
|
|
((ctrl & (1<<13)) ? 100 : 10));
|
|
}
|
|
|
|
buf[len] = '\0';
|
|
val->value.s = buf;
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
|
|
*val = state->ports[port].pvid;
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
|
|
{
|
|
struct ip175c_state *state = dev->priv;
|
|
|
|
state->ports[port].pvid = val;
|
|
|
|
if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
|
|
return 0;
|
|
|
|
return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
|
|
}
|
|
|
|
|
|
enum Ports {
|
|
IP175C_PORT_STATUS,
|
|
IP175C_PORT_LINK,
|
|
IP175C_PORT_TAGGED,
|
|
IP175C_PORT_PVID,
|
|
};
|
|
|
|
enum Globals {
|
|
IP175C_ENABLE_VLAN,
|
|
IP175C_GET_NAME,
|
|
IP175C_REGISTER_PHY,
|
|
IP175C_REGISTER_MII,
|
|
IP175C_REGISTER_VALUE,
|
|
IP175C_REGISTER_ERRNO,
|
|
};
|
|
|
|
static const struct switch_attr ip175c_global[] = {
|
|
[IP175C_ENABLE_VLAN] = {
|
|
.id = IP175C_ENABLE_VLAN,
|
|
.type = SWITCH_TYPE_INT,
|
|
.name = "enable_vlan",
|
|
.description = "Flag to enable or disable VLANs and tagging",
|
|
.get = ip175c_get_enable_vlan,
|
|
.set = ip175c_set_enable_vlan,
|
|
},
|
|
[IP175C_GET_NAME] = {
|
|
.id = IP175C_GET_NAME,
|
|
.type = SWITCH_TYPE_STRING,
|
|
.description = "Returns the type of IC+ chip.",
|
|
.name = "name",
|
|
.get = ip175c_read_name,
|
|
.set = NULL,
|
|
},
|
|
/* jal: added for low level debugging etc. */
|
|
[IP175C_REGISTER_PHY] = {
|
|
.id = IP175C_REGISTER_PHY,
|
|
.type = SWITCH_TYPE_INT,
|
|
.description = "Direct register access: set phy (0-4, or 29,30,31)",
|
|
.name = "phy",
|
|
.get = ip175c_get_phy,
|
|
.set = ip175c_set_phy,
|
|
},
|
|
[IP175C_REGISTER_MII] = {
|
|
.id = IP175C_REGISTER_MII,
|
|
.type = SWITCH_TYPE_INT,
|
|
.description = "Direct register access: set mii number (0-31)",
|
|
.name = "reg",
|
|
.get = ip175c_get_reg,
|
|
.set = ip175c_set_reg,
|
|
},
|
|
[IP175C_REGISTER_VALUE] = {
|
|
.id = IP175C_REGISTER_VALUE,
|
|
.type = SWITCH_TYPE_INT,
|
|
.description = "Direct register access: read/write to register (0-65535)",
|
|
.name = "val",
|
|
.get = ip175c_get_val,
|
|
.set = ip175c_set_val,
|
|
},
|
|
};
|
|
|
|
static const struct switch_attr ip175c_vlan[] = {
|
|
};
|
|
|
|
static const struct switch_attr ip175c_port[] = {
|
|
[IP175C_PORT_STATUS] = {
|
|
.id = IP175C_PORT_STATUS,
|
|
.type = SWITCH_TYPE_STRING,
|
|
.description = "Returns Detailed port status",
|
|
.name = "status",
|
|
.get = ip175c_get_port_status,
|
|
.set = NULL,
|
|
},
|
|
[IP175C_PORT_LINK] = {
|
|
.id = IP175C_PORT_LINK,
|
|
.type = SWITCH_TYPE_INT,
|
|
.description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
|
|
.name = "link",
|
|
.get = ip175c_get_port_speed,
|
|
.set = ip175c_set_port_speed,
|
|
},
|
|
[IP175C_PORT_TAGGED] = {
|
|
.id = IP175C_PORT_LINK,
|
|
.type = SWITCH_TYPE_INT,
|
|
.description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
|
|
.name = "tagged",
|
|
.get = ip175c_get_tagged,
|
|
.set = ip175c_set_tagged,
|
|
},
|
|
};
|
|
|
|
static int ip175c_probe(struct phy_device *pdev)
|
|
{
|
|
struct ip175c_state *state;
|
|
struct switch_dev *dev;
|
|
int err;
|
|
|
|
/* we only attach to PHY 0, but use all available PHYs */
|
|
if (pdev->addr != 0)
|
|
return -ENODEV;
|
|
|
|
state = kzalloc(sizeof(*state), GFP_KERNEL);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
dev = &state->dev;
|
|
dev->attr_global.attr = ip175c_global;
|
|
dev->attr_global.n_attr = ARRAY_SIZE(ip175c_global);
|
|
dev->attr_port.attr = ip175c_port;
|
|
dev->attr_port.n_attr = ARRAY_SIZE(ip175c_port);
|
|
dev->attr_vlan.attr = ip175c_vlan;
|
|
dev->attr_vlan.n_attr = ARRAY_SIZE(ip175c_vlan);
|
|
|
|
dev->get_port_pvid = ip175c_get_pvid;
|
|
dev->set_port_pvid = ip175c_set_pvid;
|
|
dev->get_vlan_ports = ip175c_get_ports;
|
|
dev->set_vlan_ports = ip175c_set_ports;
|
|
dev->apply_config = ip175c_apply;
|
|
dev->reset_switch = ip175c_reset;
|
|
|
|
dev->priv = state;
|
|
pdev->priv = state;
|
|
state->mii_bus = pdev->bus;
|
|
|
|
err = get_model(state);
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
dev->vlans = MAX_VLANS;
|
|
dev->cpu_port = state->regs->CPU_PORT;
|
|
dev->ports = state->regs->NUM_PORTS;
|
|
dev->name = state->regs->NAME;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
kfree(state);
|
|
return err;
|
|
}
|
|
|
|
static int ip175c_config_init(struct phy_device *pdev)
|
|
{
|
|
struct ip175c_state *state = pdev->priv;
|
|
struct net_device *dev = pdev->attached_dev;
|
|
int err;
|
|
|
|
pdev->irq = PHY_IGNORE_INTERRUPT;
|
|
err = register_switch(&state->dev, dev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
ip175c_reset(&state->dev);
|
|
|
|
state->registered = true;
|
|
netif_carrier_on(pdev->attached_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ip175c_remove(struct phy_device *pdev)
|
|
{
|
|
struct ip175c_state *state = pdev->priv;
|
|
|
|
if (state->registered)
|
|
unregister_switch(&state->dev);
|
|
kfree(state);
|
|
}
|
|
|
|
static int ip175c_config_aneg(struct phy_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int ip175c_read_status(struct phy_device *pdev)
|
|
{
|
|
pdev->speed = SPEED_100;
|
|
pdev->duplex = DUPLEX_FULL;
|
|
pdev->pause = pdev->asym_pause = 0;
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_driver ip175c_driver = {
|
|
.name = "IC+ IP175C",
|
|
.phy_id = 0x02430d80,
|
|
.phy_id_mask = 0x0ffffff0,
|
|
.features = PHY_BASIC_FEATURES,
|
|
.probe = ip175c_probe,
|
|
.remove = ip175c_remove,
|
|
.config_init = ip175c_config_init,
|
|
.config_aneg = ip175c_config_aneg,
|
|
.read_status = ip175c_read_status,
|
|
.driver = { .owner = THIS_MODULE },
|
|
};
|
|
|
|
|
|
int __init ip175c_init(void)
|
|
{
|
|
return phy_driver_register(&ip175c_driver);
|
|
}
|
|
|
|
void __exit ip175c_exit(void)
|
|
{
|
|
phy_driver_unregister(&ip175c_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
|
|
MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(ip175c_init);
|
|
module_exit(ip175c_exit);
|
|
|