914 lines
22 KiB
C
914 lines
22 KiB
C
/*
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* Driver for the built-in ethernet switch of the Atheros AR7240 SoC
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* Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (c) 2010 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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*/
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#include <linux/etherdevice.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#include <linux/mii.h>
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#include <linux/bitops.h>
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#include <linux/switch.h>
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#include "ag71xx.h"
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#define BITM(_count) (BIT(_count) - 1)
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#define BITS(_shift, _count) (BITM(_count) << _shift)
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#define AR7240_REG_MASK_CTRL 0x00
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#define AR7240_MASK_CTRL_REVISION_M BITM(8)
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#define AR7240_MASK_CTRL_VERSION_M BITM(8)
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#define AR7240_MASK_CTRL_VERSION_S 8
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#define AR7240_MASK_CTRL_SOFT_RESET BIT(31)
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#define AR7240_REG_MAC_ADDR0 0x20
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#define AR7240_REG_MAC_ADDR1 0x24
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#define AR7240_REG_FLOOD_MASK 0x2c
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#define AR7240_FLOOD_MASK_BROAD_TO_CPU BIT(26)
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#define AR7240_REG_GLOBAL_CTRL 0x30
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#define AR7240_GLOBAL_CTRL_MTU_M BITM(12)
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#define AR7240_REG_VTU 0x0040
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#define AR7240_VTU_OP BITM(3)
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#define AR7240_VTU_OP_NOOP 0x0
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#define AR7240_VTU_OP_FLUSH 0x1
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#define AR7240_VTU_OP_LOAD 0x2
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#define AR7240_VTU_OP_PURGE 0x3
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#define AR7240_VTU_OP_REMOVE_PORT 0x4
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#define AR7240_VTU_ACTIVE BIT(3)
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#define AR7240_VTU_FULL BIT(4)
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#define AR7240_VTU_PORT BITS(8, 4)
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#define AR7240_VTU_PORT_S 8
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#define AR7240_VTU_VID BITS(16, 12)
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#define AR7240_VTU_VID_S 16
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#define AR7240_VTU_PRIO BITS(28, 3)
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#define AR7240_VTU_PRIO_S 28
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#define AR7240_VTU_PRIO_EN BIT(31)
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#define AR7240_REG_VTU_DATA 0x0044
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#define AR7240_VTUDATA_MEMBER BITS(0, 10)
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#define AR7240_VTUDATA_VALID BIT(11)
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#define AR7240_REG_ATU 0x50
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#define AR7240_ATU_FLUSH_ALL 0x1
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#define AR7240_REG_AT_CTRL 0x5c
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#define AR7240_AT_CTRL_AGE_TIME BITS(0, 15)
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#define AR7240_AT_CTRL_AGE_EN BIT(17)
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#define AR7240_AT_CTRL_LEARN_CHANGE BIT(18)
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#define AR7240_AT_CTRL_ARP_EN BIT(20)
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#define AR7240_REG_TAG_PRIORITY 0x70
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#define AR7240_REG_SERVICE_TAG 0x74
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#define AR7240_SERVICE_TAG_M BITM(16)
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#define AR7240_REG_CPU_PORT 0x78
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#define AR7240_MIRROR_PORT_S 4
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#define AR7240_CPU_PORT_EN BIT(8)
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#define AR7240_REG_MIB_FUNCTION0 0x80
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#define AR7240_MIB_TIMER_M BITM(16)
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#define AR7240_MIB_AT_HALF_EN BIT(16)
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#define AR7240_MIB_BUSY BIT(17)
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#define AR7240_MIB_FUNC_S 24
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#define AR7240_MIB_FUNC_NO_OP 0x0
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#define AR7240_MIB_FUNC_FLUSH 0x1
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#define AR7240_MIB_FUNC_CAPTURE 0x3
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#define AR7240_REG_MDIO_CTRL 0x98
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#define AR7240_MDIO_CTRL_DATA_M BITM(16)
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#define AR7240_MDIO_CTRL_REG_ADDR_S 16
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#define AR7240_MDIO_CTRL_PHY_ADDR_S 21
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#define AR7240_MDIO_CTRL_CMD_WRITE 0
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#define AR7240_MDIO_CTRL_CMD_READ BIT(27)
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#define AR7240_MDIO_CTRL_MASTER_EN BIT(30)
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#define AR7240_MDIO_CTRL_BUSY BIT(31)
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#define AR7240_REG_PORT_BASE(_port) (0x100 + (_port) * 0x100)
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#define AR7240_REG_PORT_STATUS(_port) (AR7240_REG_PORT_BASE((_port)) + 0x00)
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#define AR7240_PORT_STATUS_SPEED_M BITM(2)
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#define AR7240_PORT_STATUS_SPEED_10 0
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#define AR7240_PORT_STATUS_SPEED_100 1
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#define AR7240_PORT_STATUS_SPEED_1000 2
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#define AR7240_PORT_STATUS_TXMAC BIT(2)
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#define AR7240_PORT_STATUS_RXMAC BIT(3)
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#define AR7240_PORT_STATUS_TXFLOW BIT(4)
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#define AR7240_PORT_STATUS_RXFLOW BIT(5)
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#define AR7240_PORT_STATUS_DUPLEX BIT(6)
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#define AR7240_PORT_STATUS_LINK_UP BIT(8)
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#define AR7240_PORT_STATUS_LINK_AUTO BIT(9)
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#define AR7240_PORT_STATUS_LINK_PAUSE BIT(10)
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#define AR7240_REG_PORT_CTRL(_port) (AR7240_REG_PORT_BASE((_port)) + 0x04)
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#define AR7240_PORT_CTRL_STATE_M BITM(3)
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#define AR7240_PORT_CTRL_STATE_DISABLED 0
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#define AR7240_PORT_CTRL_STATE_BLOCK 1
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#define AR7240_PORT_CTRL_STATE_LISTEN 2
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#define AR7240_PORT_CTRL_STATE_LEARN 3
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#define AR7240_PORT_CTRL_STATE_FORWARD 4
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#define AR7240_PORT_CTRL_LEARN_LOCK BIT(7)
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#define AR7240_PORT_CTRL_VLAN_MODE_S 8
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#define AR7240_PORT_CTRL_VLAN_MODE_KEEP 0
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#define AR7240_PORT_CTRL_VLAN_MODE_STRIP 1
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#define AR7240_PORT_CTRL_VLAN_MODE_ADD 2
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#define AR7240_PORT_CTRL_VLAN_MODE_DOUBLE_TAG 3
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#define AR7240_PORT_CTRL_IGMP_SNOOP BIT(10)
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#define AR7240_PORT_CTRL_HEADER BIT(11)
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#define AR7240_PORT_CTRL_MAC_LOOP BIT(12)
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#define AR7240_PORT_CTRL_SINGLE_VLAN BIT(13)
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#define AR7240_PORT_CTRL_LEARN BIT(14)
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#define AR7240_PORT_CTRL_DOUBLE_TAG BIT(15)
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#define AR7240_PORT_CTRL_MIRROR_TX BIT(16)
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#define AR7240_PORT_CTRL_MIRROR_RX BIT(17)
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#define AR7240_REG_PORT_VLAN(_port) (AR7240_REG_PORT_BASE((_port)) + 0x08)
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#define AR7240_PORT_VLAN_DEFAULT_ID_S 0
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#define AR7240_PORT_VLAN_DEST_PORTS_S 16
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#define AR7240_PORT_VLAN_MODE_S 30
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#define AR7240_PORT_VLAN_MODE_PORT_ONLY 0
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#define AR7240_PORT_VLAN_MODE_PORT_FALLBACK 1
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#define AR7240_PORT_VLAN_MODE_VLAN_ONLY 2
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#define AR7240_PORT_VLAN_MODE_SECURE 3
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#define AR7240_REG_STATS_BASE(_port) (0x20000 + (_port) * 0x100)
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#define AR7240_STATS_RXBROAD 0x00
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#define AR7240_STATS_RXPAUSE 0x04
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#define AR7240_STATS_RXMULTI 0x08
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#define AR7240_STATS_RXFCSERR 0x0c
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#define AR7240_STATS_RXALIGNERR 0x10
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#define AR7240_STATS_RXRUNT 0x14
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#define AR7240_STATS_RXFRAGMENT 0x18
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#define AR7240_STATS_RX64BYTE 0x1c
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#define AR7240_STATS_RX128BYTE 0x20
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#define AR7240_STATS_RX256BYTE 0x24
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#define AR7240_STATS_RX512BYTE 0x28
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#define AR7240_STATS_RX1024BYTE 0x2c
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#define AR7240_STATS_RX1518BYTE 0x30
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#define AR7240_STATS_RXMAXBYTE 0x34
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#define AR7240_STATS_RXTOOLONG 0x38
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#define AR7240_STATS_RXGOODBYTE 0x3c
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#define AR7240_STATS_RXBADBYTE 0x44
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#define AR7240_STATS_RXOVERFLOW 0x4c
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#define AR7240_STATS_FILTERED 0x50
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#define AR7240_STATS_TXBROAD 0x54
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#define AR7240_STATS_TXPAUSE 0x58
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#define AR7240_STATS_TXMULTI 0x5c
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#define AR7240_STATS_TXUNDERRUN 0x60
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#define AR7240_STATS_TX64BYTE 0x64
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#define AR7240_STATS_TX128BYTE 0x68
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#define AR7240_STATS_TX256BYTE 0x6c
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#define AR7240_STATS_TX512BYTE 0x70
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#define AR7240_STATS_TX1024BYTE 0x74
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#define AR7240_STATS_TX1518BYTE 0x78
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#define AR7240_STATS_TXMAXBYTE 0x7c
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#define AR7240_STATS_TXOVERSIZE 0x80
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#define AR7240_STATS_TXBYTE 0x84
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#define AR7240_STATS_TXCOLLISION 0x8c
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#define AR7240_STATS_TXABORTCOL 0x90
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#define AR7240_STATS_TXMULTICOL 0x94
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#define AR7240_STATS_TXSINGLECOL 0x98
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#define AR7240_STATS_TXEXCDEFER 0x9c
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#define AR7240_STATS_TXDEFER 0xa0
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#define AR7240_STATS_TXLATECOL 0xa4
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#define AR7240_PORT_CPU 0
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#define AR7240_NUM_PORTS 6
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#define AR7240_NUM_PHYS 5
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#define AR7240_PHY_ID1 0x004d
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#define AR7240_PHY_ID2 0xd041
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#define AR7240_PORT_MASK(_port) BIT((_port))
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#define AR7240_PORT_MASK_ALL BITM(AR7240_NUM_PORTS)
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#define AR7240_PORT_MASK_BUT(_port) (AR7240_PORT_MASK_ALL & ~BIT((_port)))
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#define AR7240_MAX_VLANS 16
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#define sw_to_ar7240(_dev) container_of(_dev, struct ar7240sw, swdev)
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struct ar7240sw {
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struct mii_bus *mii_bus;
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struct switch_dev swdev;
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bool vlan;
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u16 vlan_id[AR7240_MAX_VLANS];
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u8 vlan_table[AR7240_MAX_VLANS];
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u8 vlan_tagged;
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u16 pvid[AR7240_NUM_PORTS];
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};
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struct ar7240sw_hw_stat {
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char string[ETH_GSTRING_LEN];
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int sizeof_stat;
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int reg;
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};
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static DEFINE_MUTEX(reg_mutex);
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static inline void ar7240sw_init(struct ar7240sw *as, struct mii_bus *mii)
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{
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as->mii_bus = mii;
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}
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static inline u16 mk_phy_addr(u32 reg)
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{
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return 0x17 & ((reg >> 4) | 0x10);
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}
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static inline u16 mk_phy_reg(u32 reg)
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{
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return (reg << 1) & 0x1e;
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}
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static inline u16 mk_high_addr(u32 reg)
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{
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return (reg >> 7) & 0x1ff;
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}
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static u32 __ar7240sw_reg_read(struct mii_bus *mii, u32 reg)
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{
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unsigned long flags;
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u16 phy_addr;
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u16 phy_reg;
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u32 hi, lo;
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reg = (reg & 0xfffffffc) >> 2;
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phy_addr = mk_phy_addr(reg);
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phy_reg = mk_phy_reg(reg);
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local_irq_save(flags);
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ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg));
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lo = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg);
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hi = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg + 1);
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local_irq_restore(flags);
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return (hi << 16) | lo;
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}
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static void __ar7240sw_reg_write(struct mii_bus *mii, u32 reg, u32 val)
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{
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unsigned long flags;
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u16 phy_addr;
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u16 phy_reg;
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reg = (reg & 0xfffffffc) >> 2;
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phy_addr = mk_phy_addr(reg);
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phy_reg = mk_phy_reg(reg);
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local_irq_save(flags);
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ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg));
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ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg + 1, (val >> 16));
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ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg, (val & 0xffff));
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local_irq_restore(flags);
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}
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static u32 ar7240sw_reg_read(struct mii_bus *mii, u32 reg_addr)
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{
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u32 ret;
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mutex_lock(®_mutex);
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ret = __ar7240sw_reg_read(mii, reg_addr);
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mutex_unlock(®_mutex);
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return ret;
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}
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static void ar7240sw_reg_write(struct mii_bus *mii, u32 reg_addr, u32 reg_val)
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{
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mutex_lock(®_mutex);
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__ar7240sw_reg_write(mii, reg_addr, reg_val);
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mutex_unlock(®_mutex);
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}
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static u32 ar7240sw_reg_rmw(struct mii_bus *mii, u32 reg, u32 mask, u32 val)
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{
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u32 t;
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mutex_lock(®_mutex);
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t = __ar7240sw_reg_read(mii, reg);
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t &= ~mask;
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t |= val;
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__ar7240sw_reg_write(mii, reg, t);
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mutex_unlock(®_mutex);
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return t;
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}
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static void ar7240sw_reg_set(struct mii_bus *mii, u32 reg, u32 val)
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{
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u32 t;
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mutex_lock(®_mutex);
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t = __ar7240sw_reg_read(mii, reg);
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t |= val;
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__ar7240sw_reg_write(mii, reg, t);
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mutex_unlock(®_mutex);
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}
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static int __ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val,
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unsigned timeout)
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{
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int i;
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for (i = 0; i < timeout; i++) {
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u32 t;
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t = __ar7240sw_reg_read(mii, reg);
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if ((t & mask) == val)
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return 0;
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msleep(1);
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}
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return -ETIMEDOUT;
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}
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static int ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val,
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unsigned timeout)
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{
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int ret;
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mutex_lock(®_mutex);
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ret = __ar7240sw_reg_wait(mii, reg, mask, val, timeout);
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mutex_unlock(®_mutex);
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return ret;
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}
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u16 ar7240sw_phy_read(struct mii_bus *mii, unsigned phy_addr,
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unsigned reg_addr)
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{
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u32 t, val = 0xffff;
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int err;
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if (phy_addr >= AR7240_NUM_PHYS)
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return 0xffff;
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mutex_lock(®_mutex);
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t = (reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) |
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(phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) |
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AR7240_MDIO_CTRL_MASTER_EN |
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AR7240_MDIO_CTRL_BUSY |
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AR7240_MDIO_CTRL_CMD_READ;
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__ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t);
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err = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL,
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AR7240_MDIO_CTRL_BUSY, 0, 5);
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if (!err)
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val = __ar7240sw_reg_read(mii, AR7240_REG_MDIO_CTRL);
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mutex_unlock(®_mutex);
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return val & AR7240_MDIO_CTRL_DATA_M;
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}
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int ar7240sw_phy_write(struct mii_bus *mii, unsigned phy_addr,
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unsigned reg_addr, u16 reg_val)
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{
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u32 t;
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int ret;
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if (phy_addr >= AR7240_NUM_PHYS)
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return -EINVAL;
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mutex_lock(®_mutex);
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t = (phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) |
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(reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) |
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AR7240_MDIO_CTRL_MASTER_EN |
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AR7240_MDIO_CTRL_BUSY |
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AR7240_MDIO_CTRL_CMD_WRITE |
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reg_val;
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__ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t);
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ret = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL,
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AR7240_MDIO_CTRL_BUSY, 0, 5);
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mutex_unlock(®_mutex);
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return ret;
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}
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static int ar7240sw_capture_stats(struct ar7240sw *as)
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{
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struct mii_bus *mii = as->mii_bus;
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int ret;
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/* Capture the hardware statistics for all ports */
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ar7240sw_reg_write(mii, AR7240_REG_MIB_FUNCTION0,
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(AR7240_MIB_FUNC_CAPTURE << AR7240_MIB_FUNC_S));
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/* Wait for the capturing to complete. */
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ret = ar7240sw_reg_wait(mii, AR7240_REG_MIB_FUNCTION0,
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AR7240_MIB_BUSY, 0, 10);
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return ret;
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}
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static void ar7240sw_disable_port(struct ar7240sw *as, unsigned port)
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{
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ar7240sw_reg_write(as->mii_bus, AR7240_REG_PORT_CTRL(port),
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AR7240_PORT_CTRL_STATE_DISABLED);
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}
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static void ar7240sw_setup(struct ar7240sw *as)
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{
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struct mii_bus *mii = as->mii_bus;
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/* Enable CPU port, and disable mirror port */
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ar7240sw_reg_write(mii, AR7240_REG_CPU_PORT,
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AR7240_CPU_PORT_EN |
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(15 << AR7240_MIRROR_PORT_S));
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/* Setup TAG priority mapping */
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ar7240sw_reg_write(mii, AR7240_REG_TAG_PRIORITY, 0xfa50);
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/* Enable ARP frame acknowledge, aging, MAC replacing */
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ar7240sw_reg_write(mii, AR7240_REG_AT_CTRL,
|
|
0x2b /* 5 min age time */ |
|
|
AR7240_AT_CTRL_AGE_EN |
|
|
AR7240_AT_CTRL_ARP_EN |
|
|
AR7240_AT_CTRL_LEARN_CHANGE);
|
|
|
|
/* Enable Broadcast frames transmitted to the CPU */
|
|
ar7240sw_reg_set(mii, AR7240_REG_FLOOD_MASK,
|
|
AR7240_FLOOD_MASK_BROAD_TO_CPU);
|
|
|
|
/* setup MTU */
|
|
ar7240sw_reg_rmw(mii, AR7240_REG_GLOBAL_CTRL, AR7240_GLOBAL_CTRL_MTU_M,
|
|
1536);
|
|
|
|
/* setup Service TAG */
|
|
ar7240sw_reg_rmw(mii, AR7240_REG_SERVICE_TAG, AR7240_SERVICE_TAG_M, 0);
|
|
}
|
|
|
|
static int ar7240sw_reset(struct ar7240sw *as)
|
|
{
|
|
struct mii_bus *mii = as->mii_bus;
|
|
int ret;
|
|
int i;
|
|
|
|
/* Set all ports to disabled state. */
|
|
for (i = 0; i < AR7240_NUM_PORTS; i++)
|
|
ar7240sw_disable_port(as, i);
|
|
|
|
/* Wait for transmit queues to drain. */
|
|
msleep(2);
|
|
|
|
/* Reset the switch. */
|
|
ar7240sw_reg_write(mii, AR7240_REG_MASK_CTRL,
|
|
AR7240_MASK_CTRL_SOFT_RESET);
|
|
|
|
ret = ar7240sw_reg_wait(mii, AR7240_REG_MASK_CTRL,
|
|
AR7240_MASK_CTRL_SOFT_RESET, 0, 1000);
|
|
|
|
ar7240sw_setup(as);
|
|
return ret;
|
|
}
|
|
|
|
static void ar7240sw_setup_port(struct ar7240sw *as, unsigned port, u8 portmask)
|
|
{
|
|
struct mii_bus *mii = as->mii_bus;
|
|
u32 ctrl;
|
|
u32 dest_ports;
|
|
u32 vlan;
|
|
|
|
ctrl = AR7240_PORT_CTRL_STATE_FORWARD | AR7240_PORT_CTRL_LEARN |
|
|
AR7240_PORT_CTRL_SINGLE_VLAN;
|
|
|
|
if (port == AR7240_PORT_CPU) {
|
|
ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port),
|
|
AR7240_PORT_STATUS_SPEED_1000 |
|
|
AR7240_PORT_STATUS_TXFLOW |
|
|
AR7240_PORT_STATUS_RXFLOW |
|
|
AR7240_PORT_STATUS_TXMAC |
|
|
AR7240_PORT_STATUS_RXMAC |
|
|
AR7240_PORT_STATUS_DUPLEX);
|
|
} else {
|
|
ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port),
|
|
AR7240_PORT_STATUS_LINK_AUTO);
|
|
}
|
|
|
|
/* Set the default VID for this port */
|
|
if (as->vlan) {
|
|
vlan = as->vlan_id[as->pvid[port]];
|
|
vlan |= AR7240_PORT_VLAN_MODE_SECURE <<
|
|
AR7240_PORT_VLAN_MODE_S;
|
|
} else {
|
|
vlan = port;
|
|
vlan |= AR7240_PORT_VLAN_MODE_PORT_ONLY <<
|
|
AR7240_PORT_VLAN_MODE_S;
|
|
}
|
|
|
|
if (as->vlan && (as->vlan_tagged & BIT(port))) {
|
|
ctrl |= AR7240_PORT_CTRL_VLAN_MODE_ADD <<
|
|
AR7240_PORT_CTRL_VLAN_MODE_S;
|
|
} else {
|
|
ctrl |= AR7240_PORT_CTRL_VLAN_MODE_STRIP <<
|
|
AR7240_PORT_CTRL_VLAN_MODE_S;
|
|
}
|
|
|
|
if (!portmask) {
|
|
if (port == AR7240_PORT_CPU)
|
|
portmask = AR7240_PORT_MASK_BUT(AR7240_PORT_CPU);
|
|
else
|
|
portmask = AR7240_PORT_MASK(AR7240_PORT_CPU);
|
|
}
|
|
|
|
/* allow the port to talk to all other ports, but exclude its
|
|
* own ID to prevent frames from being reflected back to the
|
|
* port that they came from */
|
|
dest_ports = AR7240_PORT_MASK_BUT(port);
|
|
|
|
/* set default VID and and destination ports for this VLAN */
|
|
vlan |= (portmask << AR7240_PORT_VLAN_DEST_PORTS_S);
|
|
|
|
ar7240sw_reg_write(mii, AR7240_REG_PORT_CTRL(port), ctrl);
|
|
ar7240sw_reg_write(mii, AR7240_REG_PORT_VLAN(port), vlan);
|
|
}
|
|
|
|
static int ar7240_set_addr(struct ar7240sw *as, u8 *addr)
|
|
{
|
|
struct mii_bus *mii = as->mii_bus;
|
|
u32 t;
|
|
|
|
t = (addr[4] << 8) | addr[5];
|
|
ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR0, t);
|
|
|
|
t = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
|
|
ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR1, t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
as->vlan_id[val->port_vlan] = val->value.i;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
val->value.i = as->vlan_id[val->port_vlan];
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_set_pvid(struct switch_dev *dev, int port, int vlan)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
|
|
/* make sure no invalid PVIDs get set */
|
|
|
|
if (vlan >= dev->vlans)
|
|
return -EINVAL;
|
|
|
|
as->pvid[port] = vlan;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_get_pvid(struct switch_dev *dev, int port, int *vlan)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
*vlan = as->pvid[port];
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_get_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
u8 ports = as->vlan_table[val->port_vlan];
|
|
int i;
|
|
|
|
val->len = 0;
|
|
for (i = 0; i < AR7240_NUM_PORTS; i++) {
|
|
struct switch_port *p;
|
|
|
|
if (!(ports & (1 << i)))
|
|
continue;
|
|
|
|
p = &val->value.ports[val->len++];
|
|
p->id = i;
|
|
if (as->vlan_tagged & (1 << i))
|
|
p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
|
|
else
|
|
p->flags = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_set_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
u8 *vt = &as->vlan_table[val->port_vlan];
|
|
int i, j;
|
|
|
|
*vt = 0;
|
|
for (i = 0; i < val->len; i++) {
|
|
struct switch_port *p = &val->value.ports[i];
|
|
|
|
if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
|
|
as->vlan_tagged |= (1 << p->id);
|
|
else {
|
|
as->vlan_tagged &= ~(1 << p->id);
|
|
as->pvid[p->id] = val->port_vlan;
|
|
|
|
/* make sure that an untagged port does not
|
|
* appear in other vlans */
|
|
for (j = 0; j < AR7240_MAX_VLANS; j++) {
|
|
if (j == val->port_vlan)
|
|
continue;
|
|
as->vlan_table[j] &= ~(1 << p->id);
|
|
}
|
|
}
|
|
|
|
*vt |= 1 << p->id;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
as->vlan = !!val->value.i;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
val->value.i = as->vlan;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void
|
|
ar7240_vtu_op(struct ar7240sw *as, u32 op, u32 val)
|
|
{
|
|
struct mii_bus *mii = as->mii_bus;
|
|
|
|
if (ar7240sw_reg_wait(mii, AR7240_REG_VTU, AR7240_VTU_ACTIVE, 0, 5))
|
|
return;
|
|
|
|
if ((op & AR7240_VTU_OP) == AR7240_VTU_OP_LOAD) {
|
|
val &= AR7240_VTUDATA_MEMBER;
|
|
val |= AR7240_VTUDATA_VALID;
|
|
ar7240sw_reg_write(mii, AR7240_REG_VTU_DATA, val);
|
|
}
|
|
op |= AR7240_VTU_ACTIVE;
|
|
ar7240sw_reg_write(mii, AR7240_REG_VTU, op);
|
|
}
|
|
|
|
static int
|
|
ar7240_hw_apply(struct switch_dev *dev)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
u8 portmask[AR7240_NUM_PORTS];
|
|
int i, j;
|
|
|
|
/* flush all vlan translation unit entries */
|
|
ar7240_vtu_op(as, AR7240_VTU_OP_FLUSH, 0);
|
|
|
|
memset(portmask, 0, sizeof(portmask));
|
|
if (as->vlan) {
|
|
/* calculate the port destination masks and load vlans
|
|
* into the vlan translation unit */
|
|
for (j = 0; j < AR7240_MAX_VLANS; j++) {
|
|
u8 vp = as->vlan_table[j];
|
|
|
|
if (!vp)
|
|
continue;
|
|
|
|
for (i = 0; i < AR7240_NUM_PORTS; i++) {
|
|
u8 mask = (1 << i);
|
|
if (vp & mask)
|
|
portmask[i] |= vp & ~mask;
|
|
}
|
|
|
|
ar7240_vtu_op(as,
|
|
AR7240_VTU_OP_LOAD |
|
|
(as->vlan_id[j] << AR7240_VTU_VID_S),
|
|
as->vlan_table[j]);
|
|
}
|
|
} else {
|
|
/* vlan disabled:
|
|
* isolate all ports, but connect them to the cpu port */
|
|
for (i = 0; i < AR7240_NUM_PORTS; i++) {
|
|
if (i == AR7240_PORT_CPU)
|
|
continue;
|
|
|
|
portmask[i] = 1 << AR7240_PORT_CPU;
|
|
portmask[AR7240_PORT_CPU] |= (1 << i);
|
|
}
|
|
}
|
|
|
|
/* update the port destination mask registers and tag settings */
|
|
for (i = 0; i < AR7240_NUM_PORTS; i++)
|
|
ar7240sw_setup_port(as, i, portmask[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ar7240_reset_switch(struct switch_dev *dev)
|
|
{
|
|
struct ar7240sw *as = sw_to_ar7240(dev);
|
|
ar7240sw_reset(as);
|
|
return 0;
|
|
}
|
|
|
|
static struct switch_attr ar7240_globals[] = {
|
|
{
|
|
.type = SWITCH_TYPE_INT,
|
|
.name = "enable_vlan",
|
|
.description = "Enable VLAN mode",
|
|
.set = ar7240_set_vlan,
|
|
.get = ar7240_get_vlan,
|
|
.max = 1
|
|
},
|
|
};
|
|
|
|
static struct switch_attr ar7240_port[] = {
|
|
};
|
|
|
|
static struct switch_attr ar7240_vlan[] = {
|
|
{
|
|
.type = SWITCH_TYPE_INT,
|
|
.name = "vid",
|
|
.description = "VLAN ID",
|
|
.set = ar7240_set_vid,
|
|
.get = ar7240_get_vid,
|
|
.max = 4094,
|
|
},
|
|
};
|
|
|
|
static const struct switch_dev_ops ar7240_ops = {
|
|
.attr_global = {
|
|
.attr = ar7240_globals,
|
|
.n_attr = ARRAY_SIZE(ar7240_globals),
|
|
},
|
|
.attr_port = {
|
|
.attr = ar7240_port,
|
|
.n_attr = ARRAY_SIZE(ar7240_port),
|
|
},
|
|
.attr_vlan = {
|
|
.attr = ar7240_vlan,
|
|
.n_attr = ARRAY_SIZE(ar7240_vlan),
|
|
},
|
|
.get_port_pvid = ar7240_get_pvid,
|
|
.set_port_pvid = ar7240_set_pvid,
|
|
.get_vlan_ports = ar7240_get_ports,
|
|
.set_vlan_ports = ar7240_set_ports,
|
|
.apply_config = ar7240_hw_apply,
|
|
.reset_switch = ar7240_reset_switch,
|
|
};
|
|
|
|
static struct ar7240sw *ar7240_probe(struct ag71xx *ag)
|
|
{
|
|
struct mii_bus *mii = ag->mii_bus;
|
|
struct ar7240sw *as;
|
|
struct switch_dev *swdev;
|
|
u32 ctrl;
|
|
u16 phy_id1;
|
|
u16 phy_id2;
|
|
u8 ver;
|
|
int i;
|
|
|
|
as = kzalloc(sizeof(*as), GFP_KERNEL);
|
|
if (!as)
|
|
return NULL;
|
|
|
|
ar7240sw_init(as, mii);
|
|
|
|
ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL);
|
|
|
|
ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) & AR7240_MASK_CTRL_VERSION_M;
|
|
if (ver != 1) {
|
|
pr_err("%s: unsupported chip, ctrl=%08x\n",
|
|
ag->dev->name, ctrl);
|
|
return NULL;
|
|
}
|
|
|
|
phy_id1 = ar7240sw_phy_read(mii, 0, MII_PHYSID1);
|
|
phy_id2 = ar7240sw_phy_read(mii, 0, MII_PHYSID2);
|
|
if (phy_id1 != AR7240_PHY_ID1 || phy_id2 != AR7240_PHY_ID2) {
|
|
pr_err("%s: unknown phy id '%04x:%04x'\n",
|
|
ag->dev->name, phy_id1, phy_id2);
|
|
return NULL;
|
|
}
|
|
|
|
swdev = &as->swdev;
|
|
swdev->name = "AR7240 built-in switch";
|
|
swdev->ports = AR7240_NUM_PORTS;
|
|
swdev->cpu_port = AR7240_PORT_CPU;
|
|
swdev->vlans = AR7240_MAX_VLANS;
|
|
swdev->ops = &ar7240_ops;
|
|
|
|
if (register_switch(&as->swdev, ag->dev) < 0) {
|
|
kfree(as);
|
|
return NULL;
|
|
}
|
|
|
|
pr_info("%s: Found an AR7240 built-in switch\n", ag->dev->name);
|
|
|
|
/* initialize defaults */
|
|
for (i = 0; i < AR7240_MAX_VLANS; i++)
|
|
as->vlan_id[i] = i;
|
|
|
|
as->vlan_table[0] = AR7240_PORT_MASK_ALL;
|
|
|
|
return as;
|
|
}
|
|
|
|
static void link_function(struct work_struct *work) {
|
|
struct ag71xx *ag = container_of(work, struct ag71xx, link_work.work);
|
|
unsigned long flags;
|
|
int i;
|
|
int status = 0;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
int link = ar7240sw_phy_read(ag->mii_bus, i, MII_BMSR);
|
|
if(link & BMSR_LSTATUS) {
|
|
status = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&ag->lock, flags);
|
|
if(status != ag->link) {
|
|
ag->link = status;
|
|
ag71xx_link_adjust(ag);
|
|
}
|
|
spin_unlock_irqrestore(&ag->lock, flags);
|
|
|
|
schedule_delayed_work(&ag->link_work, HZ / 2);
|
|
}
|
|
|
|
void ag71xx_ar7240_start(struct ag71xx *ag)
|
|
{
|
|
struct ar7240sw *as = ag->phy_priv;
|
|
|
|
ar7240sw_reset(as);
|
|
|
|
ag->speed = SPEED_1000;
|
|
ag->duplex = 1;
|
|
|
|
ar7240_set_addr(as, ag->dev->dev_addr);
|
|
ar7240_hw_apply(&as->swdev);
|
|
|
|
schedule_delayed_work(&ag->link_work, HZ / 10);
|
|
}
|
|
|
|
void ag71xx_ar7240_stop(struct ag71xx *ag)
|
|
{
|
|
cancel_delayed_work_sync(&ag->link_work);
|
|
}
|
|
|
|
int __devinit ag71xx_ar7240_init(struct ag71xx *ag)
|
|
{
|
|
struct ar7240sw *as;
|
|
|
|
as = ar7240_probe(ag);
|
|
if (!as)
|
|
return -ENODEV;
|
|
|
|
ag->phy_priv = as;
|
|
ar7240sw_reset(as);
|
|
|
|
INIT_DELAYED_WORK(&ag->link_work, link_function);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ag71xx_ar7240_cleanup(struct ag71xx *ag)
|
|
{
|
|
struct ar7240sw *as = ag->phy_priv;
|
|
|
|
if (!as)
|
|
return;
|
|
|
|
unregister_switch(&as->swdev);
|
|
kfree(as);
|
|
ag->phy_priv = NULL;
|
|
}
|