1385 lines
39 KiB
C
1385 lines
39 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2017 Pengutronix, Juergen Borleis <kernel@pengutronix.de>
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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/gpio/consumer.h>
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#include <linux/regmap.h>
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#include <linux/mutex.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#include <linux/if_bridge.h>
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#include <linux/etherdevice.h>
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#include "lan9303.h"
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#define LAN9303_NUM_PORTS 3
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/* 13.2 System Control and Status Registers
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* Multiply register number by 4 to get address offset.
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*/
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#define LAN9303_CHIP_REV 0x14
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# define LAN9303_CHIP_ID 0x9303
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#define LAN9303_IRQ_CFG 0x15
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# define LAN9303_IRQ_CFG_IRQ_ENABLE BIT(8)
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# define LAN9303_IRQ_CFG_IRQ_POL BIT(4)
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# define LAN9303_IRQ_CFG_IRQ_TYPE BIT(0)
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#define LAN9303_INT_STS 0x16
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# define LAN9303_INT_STS_PHY_INT2 BIT(27)
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# define LAN9303_INT_STS_PHY_INT1 BIT(26)
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#define LAN9303_INT_EN 0x17
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# define LAN9303_INT_EN_PHY_INT2_EN BIT(27)
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# define LAN9303_INT_EN_PHY_INT1_EN BIT(26)
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#define LAN9303_HW_CFG 0x1D
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# define LAN9303_HW_CFG_READY BIT(27)
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# define LAN9303_HW_CFG_AMDX_EN_PORT2 BIT(26)
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# define LAN9303_HW_CFG_AMDX_EN_PORT1 BIT(25)
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#define LAN9303_PMI_DATA 0x29
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#define LAN9303_PMI_ACCESS 0x2A
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# define LAN9303_PMI_ACCESS_PHY_ADDR(x) (((x) & 0x1f) << 11)
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# define LAN9303_PMI_ACCESS_MIIRINDA(x) (((x) & 0x1f) << 6)
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# define LAN9303_PMI_ACCESS_MII_BUSY BIT(0)
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# define LAN9303_PMI_ACCESS_MII_WRITE BIT(1)
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#define LAN9303_MANUAL_FC_1 0x68
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#define LAN9303_MANUAL_FC_2 0x69
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#define LAN9303_MANUAL_FC_0 0x6a
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#define LAN9303_SWITCH_CSR_DATA 0x6b
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#define LAN9303_SWITCH_CSR_CMD 0x6c
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#define LAN9303_SWITCH_CSR_CMD_BUSY BIT(31)
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#define LAN9303_SWITCH_CSR_CMD_RW BIT(30)
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#define LAN9303_SWITCH_CSR_CMD_LANES (BIT(19) | BIT(18) | BIT(17) | BIT(16))
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#define LAN9303_VIRT_PHY_BASE 0x70
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#define LAN9303_VIRT_SPECIAL_CTRL 0x77
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#define LAN9303_VIRT_SPECIAL_TURBO BIT(10) /*Turbo MII Enable*/
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/*13.4 Switch Fabric Control and Status Registers
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* Accessed indirectly via SWITCH_CSR_CMD, SWITCH_CSR_DATA.
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*/
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#define LAN9303_SW_DEV_ID 0x0000
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#define LAN9303_SW_RESET 0x0001
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#define LAN9303_SW_RESET_RESET BIT(0)
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#define LAN9303_SW_IMR 0x0004
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#define LAN9303_SW_IPR 0x0005
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#define LAN9303_MAC_VER_ID_0 0x0400
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#define LAN9303_MAC_RX_CFG_0 0x0401
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# define LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES BIT(1)
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# define LAN9303_MAC_RX_CFG_X_RX_ENABLE BIT(0)
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#define LAN9303_MAC_RX_UNDSZE_CNT_0 0x0410
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#define LAN9303_MAC_RX_64_CNT_0 0x0411
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#define LAN9303_MAC_RX_127_CNT_0 0x0412
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#define LAN9303_MAC_RX_255_CNT_0 0x413
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#define LAN9303_MAC_RX_511_CNT_0 0x0414
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#define LAN9303_MAC_RX_1023_CNT_0 0x0415
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#define LAN9303_MAC_RX_MAX_CNT_0 0x0416
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#define LAN9303_MAC_RX_OVRSZE_CNT_0 0x0417
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#define LAN9303_MAC_RX_PKTOK_CNT_0 0x0418
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#define LAN9303_MAC_RX_CRCERR_CNT_0 0x0419
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#define LAN9303_MAC_RX_MULCST_CNT_0 0x041a
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#define LAN9303_MAC_RX_BRDCST_CNT_0 0x041b
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#define LAN9303_MAC_RX_PAUSE_CNT_0 0x041c
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#define LAN9303_MAC_RX_FRAG_CNT_0 0x041d
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#define LAN9303_MAC_RX_JABB_CNT_0 0x041e
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#define LAN9303_MAC_RX_ALIGN_CNT_0 0x041f
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#define LAN9303_MAC_RX_PKTLEN_CNT_0 0x0420
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#define LAN9303_MAC_RX_GOODPKTLEN_CNT_0 0x0421
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#define LAN9303_MAC_RX_SYMBL_CNT_0 0x0422
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#define LAN9303_MAC_RX_CTLFRM_CNT_0 0x0423
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#define LAN9303_MAC_TX_CFG_0 0x0440
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# define LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT (21 << 2)
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# define LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE BIT(1)
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# define LAN9303_MAC_TX_CFG_X_TX_ENABLE BIT(0)
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#define LAN9303_MAC_TX_DEFER_CNT_0 0x0451
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#define LAN9303_MAC_TX_PAUSE_CNT_0 0x0452
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#define LAN9303_MAC_TX_PKTOK_CNT_0 0x0453
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#define LAN9303_MAC_TX_64_CNT_0 0x0454
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#define LAN9303_MAC_TX_127_CNT_0 0x0455
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#define LAN9303_MAC_TX_255_CNT_0 0x0456
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#define LAN9303_MAC_TX_511_CNT_0 0x0457
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#define LAN9303_MAC_TX_1023_CNT_0 0x0458
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#define LAN9303_MAC_TX_MAX_CNT_0 0x0459
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#define LAN9303_MAC_TX_UNDSZE_CNT_0 0x045a
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#define LAN9303_MAC_TX_PKTLEN_CNT_0 0x045c
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#define LAN9303_MAC_TX_BRDCST_CNT_0 0x045d
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#define LAN9303_MAC_TX_MULCST_CNT_0 0x045e
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#define LAN9303_MAC_TX_LATECOL_0 0x045f
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#define LAN9303_MAC_TX_EXCOL_CNT_0 0x0460
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#define LAN9303_MAC_TX_SNGLECOL_CNT_0 0x0461
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#define LAN9303_MAC_TX_MULTICOL_CNT_0 0x0462
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#define LAN9303_MAC_TX_TOTALCOL_CNT_0 0x0463
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#define LAN9303_MAC_VER_ID_1 0x0800
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#define LAN9303_MAC_RX_CFG_1 0x0801
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#define LAN9303_MAC_TX_CFG_1 0x0840
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#define LAN9303_MAC_VER_ID_2 0x0c00
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#define LAN9303_MAC_RX_CFG_2 0x0c01
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#define LAN9303_MAC_TX_CFG_2 0x0c40
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#define LAN9303_SWE_ALR_CMD 0x1800
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# define LAN9303_ALR_CMD_MAKE_ENTRY BIT(2)
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# define LAN9303_ALR_CMD_GET_FIRST BIT(1)
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# define LAN9303_ALR_CMD_GET_NEXT BIT(0)
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#define LAN9303_SWE_ALR_WR_DAT_0 0x1801
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#define LAN9303_SWE_ALR_WR_DAT_1 0x1802
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# define LAN9303_ALR_DAT1_VALID BIT(26)
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# define LAN9303_ALR_DAT1_END_OF_TABL BIT(25)
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# define LAN9303_ALR_DAT1_AGE_OVERRID BIT(25)
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# define LAN9303_ALR_DAT1_STATIC BIT(24)
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# define LAN9303_ALR_DAT1_PORT_BITOFFS 16
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# define LAN9303_ALR_DAT1_PORT_MASK (7 << LAN9303_ALR_DAT1_PORT_BITOFFS)
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#define LAN9303_SWE_ALR_RD_DAT_0 0x1805
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#define LAN9303_SWE_ALR_RD_DAT_1 0x1806
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#define LAN9303_SWE_ALR_CMD_STS 0x1808
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# define ALR_STS_MAKE_PEND BIT(0)
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#define LAN9303_SWE_VLAN_CMD 0x180b
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# define LAN9303_SWE_VLAN_CMD_RNW BIT(5)
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# define LAN9303_SWE_VLAN_CMD_PVIDNVLAN BIT(4)
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#define LAN9303_SWE_VLAN_WR_DATA 0x180c
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#define LAN9303_SWE_VLAN_RD_DATA 0x180e
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# define LAN9303_SWE_VLAN_MEMBER_PORT2 BIT(17)
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# define LAN9303_SWE_VLAN_UNTAG_PORT2 BIT(16)
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# define LAN9303_SWE_VLAN_MEMBER_PORT1 BIT(15)
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# define LAN9303_SWE_VLAN_UNTAG_PORT1 BIT(14)
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# define LAN9303_SWE_VLAN_MEMBER_PORT0 BIT(13)
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# define LAN9303_SWE_VLAN_UNTAG_PORT0 BIT(12)
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#define LAN9303_SWE_VLAN_CMD_STS 0x1810
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#define LAN9303_SWE_GLB_INGRESS_CFG 0x1840
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# define LAN9303_SWE_GLB_INGR_IGMP_TRAP BIT(7)
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# define LAN9303_SWE_GLB_INGR_IGMP_PORT(p) BIT(10 + p)
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#define LAN9303_SWE_PORT_STATE 0x1843
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# define LAN9303_SWE_PORT_STATE_FORWARDING_PORT2 (0)
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# define LAN9303_SWE_PORT_STATE_LEARNING_PORT2 BIT(5)
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# define LAN9303_SWE_PORT_STATE_BLOCKING_PORT2 BIT(4)
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# define LAN9303_SWE_PORT_STATE_FORWARDING_PORT1 (0)
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# define LAN9303_SWE_PORT_STATE_LEARNING_PORT1 BIT(3)
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# define LAN9303_SWE_PORT_STATE_BLOCKING_PORT1 BIT(2)
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# define LAN9303_SWE_PORT_STATE_FORWARDING_PORT0 (0)
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# define LAN9303_SWE_PORT_STATE_LEARNING_PORT0 BIT(1)
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# define LAN9303_SWE_PORT_STATE_BLOCKING_PORT0 BIT(0)
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# define LAN9303_SWE_PORT_STATE_DISABLED_PORT0 (3)
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#define LAN9303_SWE_PORT_MIRROR 0x1846
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# define LAN9303_SWE_PORT_MIRROR_SNIFF_ALL BIT(8)
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# define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT2 BIT(7)
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# define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT1 BIT(6)
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# define LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT0 BIT(5)
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# define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT2 BIT(4)
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# define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT1 BIT(3)
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# define LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT0 BIT(2)
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# define LAN9303_SWE_PORT_MIRROR_ENABLE_RX_MIRRORING BIT(1)
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# define LAN9303_SWE_PORT_MIRROR_ENABLE_TX_MIRRORING BIT(0)
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# define LAN9303_SWE_PORT_MIRROR_DISABLED 0
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#define LAN9303_SWE_INGRESS_PORT_TYPE 0x1847
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#define LAN9303_SWE_INGRESS_PORT_TYPE_VLAN 3
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#define LAN9303_BM_CFG 0x1c00
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#define LAN9303_BM_EGRSS_PORT_TYPE 0x1c0c
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# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT2 (BIT(17) | BIT(16))
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# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))
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# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))
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#define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))
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/* the built-in PHYs are of type LAN911X */
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#define MII_LAN911X_SPECIAL_MODES 0x12
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#define MII_LAN911X_SPECIAL_CONTROL_STATUS 0x1f
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static const struct regmap_range lan9303_valid_regs[] = {
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regmap_reg_range(0x14, 0x17), /* misc, interrupt */
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regmap_reg_range(0x19, 0x19), /* endian test */
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regmap_reg_range(0x1d, 0x1d), /* hardware config */
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regmap_reg_range(0x23, 0x24), /* general purpose timer */
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regmap_reg_range(0x27, 0x27), /* counter */
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regmap_reg_range(0x29, 0x2a), /* PMI index regs */
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regmap_reg_range(0x68, 0x6a), /* flow control */
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regmap_reg_range(0x6b, 0x6c), /* switch fabric indirect regs */
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regmap_reg_range(0x6d, 0x6f), /* misc */
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regmap_reg_range(0x70, 0x77), /* virtual phy */
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regmap_reg_range(0x78, 0x7a), /* GPIO */
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regmap_reg_range(0x7c, 0x7e), /* MAC & reset */
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regmap_reg_range(0x80, 0xb7), /* switch fabric direct regs (wr only) */
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};
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static const struct regmap_range lan9303_reserved_ranges[] = {
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regmap_reg_range(0x00, 0x13),
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regmap_reg_range(0x18, 0x18),
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regmap_reg_range(0x1a, 0x1c),
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regmap_reg_range(0x1e, 0x22),
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regmap_reg_range(0x25, 0x26),
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regmap_reg_range(0x28, 0x28),
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regmap_reg_range(0x2b, 0x67),
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regmap_reg_range(0x7b, 0x7b),
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regmap_reg_range(0x7f, 0x7f),
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regmap_reg_range(0xb8, 0xff),
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};
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const struct regmap_access_table lan9303_register_set = {
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.yes_ranges = lan9303_valid_regs,
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.n_yes_ranges = ARRAY_SIZE(lan9303_valid_regs),
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.no_ranges = lan9303_reserved_ranges,
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.n_no_ranges = ARRAY_SIZE(lan9303_reserved_ranges),
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};
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EXPORT_SYMBOL(lan9303_register_set);
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static int lan9303_read(struct regmap *regmap, unsigned int offset, u32 *reg)
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{
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int ret, i;
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/* we can lose arbitration for the I2C case, because the device
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* tries to detect and read an external EEPROM after reset and acts as
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* a master on the shared I2C bus itself. This conflicts with our
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* attempts to access the device as a slave at the same moment.
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*/
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for (i = 0; i < 5; i++) {
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ret = regmap_read(regmap, offset, reg);
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if (!ret)
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return 0;
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if (ret != -EAGAIN)
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break;
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msleep(500);
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}
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return -EIO;
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}
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static int lan9303_read_wait(struct lan9303 *chip, int offset, u32 mask)
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{
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int i;
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for (i = 0; i < 25; i++) {
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u32 reg;
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int ret;
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ret = lan9303_read(chip->regmap, offset, ®);
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if (ret) {
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dev_err(chip->dev, "%s failed to read offset %d: %d\n",
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__func__, offset, ret);
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return ret;
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}
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if (!(reg & mask))
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return 0;
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usleep_range(1000, 2000);
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}
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return -ETIMEDOUT;
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}
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static int lan9303_virt_phy_reg_read(struct lan9303 *chip, int regnum)
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{
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int ret;
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u32 val;
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if (regnum > MII_EXPANSION)
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return -EINVAL;
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ret = lan9303_read(chip->regmap, LAN9303_VIRT_PHY_BASE + regnum, &val);
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if (ret)
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return ret;
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return val & 0xffff;
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}
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static int lan9303_virt_phy_reg_write(struct lan9303 *chip, int regnum, u16 val)
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{
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if (regnum > MII_EXPANSION)
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return -EINVAL;
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return regmap_write(chip->regmap, LAN9303_VIRT_PHY_BASE + regnum, val);
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}
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static int lan9303_indirect_phy_wait_for_completion(struct lan9303 *chip)
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{
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return lan9303_read_wait(chip, LAN9303_PMI_ACCESS,
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LAN9303_PMI_ACCESS_MII_BUSY);
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}
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static int lan9303_indirect_phy_read(struct lan9303 *chip, int addr, int regnum)
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{
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int ret;
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u32 val;
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val = LAN9303_PMI_ACCESS_PHY_ADDR(addr);
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val |= LAN9303_PMI_ACCESS_MIIRINDA(regnum);
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mutex_lock(&chip->indirect_mutex);
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ret = lan9303_indirect_phy_wait_for_completion(chip);
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if (ret)
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goto on_error;
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/* start the MII read cycle */
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ret = regmap_write(chip->regmap, LAN9303_PMI_ACCESS, val);
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if (ret)
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goto on_error;
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ret = lan9303_indirect_phy_wait_for_completion(chip);
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if (ret)
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goto on_error;
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/* read the result of this operation */
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ret = lan9303_read(chip->regmap, LAN9303_PMI_DATA, &val);
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if (ret)
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goto on_error;
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mutex_unlock(&chip->indirect_mutex);
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return val & 0xffff;
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on_error:
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mutex_unlock(&chip->indirect_mutex);
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return ret;
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}
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static int lan9303_indirect_phy_write(struct lan9303 *chip, int addr,
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int regnum, u16 val)
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{
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int ret;
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u32 reg;
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reg = LAN9303_PMI_ACCESS_PHY_ADDR(addr);
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reg |= LAN9303_PMI_ACCESS_MIIRINDA(regnum);
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reg |= LAN9303_PMI_ACCESS_MII_WRITE;
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mutex_lock(&chip->indirect_mutex);
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ret = lan9303_indirect_phy_wait_for_completion(chip);
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if (ret)
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goto on_error;
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/* write the data first... */
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ret = regmap_write(chip->regmap, LAN9303_PMI_DATA, val);
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if (ret)
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goto on_error;
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/* ...then start the MII write cycle */
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ret = regmap_write(chip->regmap, LAN9303_PMI_ACCESS, reg);
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on_error:
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mutex_unlock(&chip->indirect_mutex);
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return ret;
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}
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const struct lan9303_phy_ops lan9303_indirect_phy_ops = {
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.phy_read = lan9303_indirect_phy_read,
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.phy_write = lan9303_indirect_phy_write,
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};
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EXPORT_SYMBOL_GPL(lan9303_indirect_phy_ops);
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static int lan9303_switch_wait_for_completion(struct lan9303 *chip)
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{
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return lan9303_read_wait(chip, LAN9303_SWITCH_CSR_CMD,
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LAN9303_SWITCH_CSR_CMD_BUSY);
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}
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static int lan9303_write_switch_reg(struct lan9303 *chip, u16 regnum, u32 val)
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{
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u32 reg;
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int ret;
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reg = regnum;
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reg |= LAN9303_SWITCH_CSR_CMD_LANES;
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reg |= LAN9303_SWITCH_CSR_CMD_BUSY;
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mutex_lock(&chip->indirect_mutex);
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ret = lan9303_switch_wait_for_completion(chip);
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if (ret)
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goto on_error;
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ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_DATA, val);
|
|
if (ret) {
|
|
dev_err(chip->dev, "Failed to write csr data reg: %d\n", ret);
|
|
goto on_error;
|
|
}
|
|
|
|
/* trigger write */
|
|
ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_CMD, reg);
|
|
if (ret)
|
|
dev_err(chip->dev, "Failed to write csr command reg: %d\n",
|
|
ret);
|
|
|
|
on_error:
|
|
mutex_unlock(&chip->indirect_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int lan9303_read_switch_reg(struct lan9303 *chip, u16 regnum, u32 *val)
|
|
{
|
|
u32 reg;
|
|
int ret;
|
|
|
|
reg = regnum;
|
|
reg |= LAN9303_SWITCH_CSR_CMD_LANES;
|
|
reg |= LAN9303_SWITCH_CSR_CMD_RW;
|
|
reg |= LAN9303_SWITCH_CSR_CMD_BUSY;
|
|
|
|
mutex_lock(&chip->indirect_mutex);
|
|
|
|
ret = lan9303_switch_wait_for_completion(chip);
|
|
if (ret)
|
|
goto on_error;
|
|
|
|
/* trigger read */
|
|
ret = regmap_write(chip->regmap, LAN9303_SWITCH_CSR_CMD, reg);
|
|
if (ret) {
|
|
dev_err(chip->dev, "Failed to write csr command reg: %d\n",
|
|
ret);
|
|
goto on_error;
|
|
}
|
|
|
|
ret = lan9303_switch_wait_for_completion(chip);
|
|
if (ret)
|
|
goto on_error;
|
|
|
|
ret = lan9303_read(chip->regmap, LAN9303_SWITCH_CSR_DATA, val);
|
|
if (ret)
|
|
dev_err(chip->dev, "Failed to read csr data reg: %d\n", ret);
|
|
on_error:
|
|
mutex_unlock(&chip->indirect_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int lan9303_write_switch_reg_mask(struct lan9303 *chip, u16 regnum,
|
|
u32 val, u32 mask)
|
|
{
|
|
int ret;
|
|
u32 reg;
|
|
|
|
ret = lan9303_read_switch_reg(chip, regnum, ®);
|
|
if (ret)
|
|
return ret;
|
|
|
|
reg = (reg & ~mask) | val;
|
|
|
|
return lan9303_write_switch_reg(chip, regnum, reg);
|
|
}
|
|
|
|
static int lan9303_write_switch_port(struct lan9303 *chip, int port,
|
|
u16 regnum, u32 val)
|
|
{
|
|
return lan9303_write_switch_reg(
|
|
chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
|
|
}
|
|
|
|
static int lan9303_read_switch_port(struct lan9303 *chip, int port,
|
|
u16 regnum, u32 *val)
|
|
{
|
|
return lan9303_read_switch_reg(
|
|
chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
|
|
}
|
|
|
|
static int lan9303_detect_phy_setup(struct lan9303 *chip)
|
|
{
|
|
int reg;
|
|
|
|
/* Calculate chip->phy_addr_base:
|
|
* Depending on the 'phy_addr_sel_strap' setting, the three phys are
|
|
* using IDs 0-1-2 or IDs 1-2-3. We cannot read back the
|
|
* 'phy_addr_sel_strap' setting directly, so we need a test, which
|
|
* configuration is active:
|
|
* Special reg 18 of phy 3 reads as 0x0000, if 'phy_addr_sel_strap' is 0
|
|
* and the IDs are 0-1-2, else it contains something different from
|
|
* 0x0000, which means 'phy_addr_sel_strap' is 1 and the IDs are 1-2-3.
|
|
* 0xffff is returned on MDIO read with no response.
|
|
*/
|
|
reg = chip->ops->phy_read(chip, 3, MII_LAN911X_SPECIAL_MODES);
|
|
if (reg < 0) {
|
|
dev_err(chip->dev, "Failed to detect phy config: %d\n", reg);
|
|
return reg;
|
|
}
|
|
|
|
chip->phy_addr_base = reg != 0 && reg != 0xffff;
|
|
|
|
dev_dbg(chip->dev, "Phy setup '%s' detected\n",
|
|
chip->phy_addr_base ? "1-2-3" : "0-1-2");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Map ALR-port bits to port bitmap, and back */
|
|
static const int alrport_2_portmap[] = {1, 2, 4, 0, 3, 5, 6, 7 };
|
|
static const int portmap_2_alrport[] = {3, 0, 1, 4, 2, 5, 6, 7 };
|
|
|
|
/* Return pointer to first free ALR cache entry, return NULL if none */
|
|
static struct lan9303_alr_cache_entry *
|
|
lan9303_alr_cache_find_free(struct lan9303 *chip)
|
|
{
|
|
int i;
|
|
struct lan9303_alr_cache_entry *entr = chip->alr_cache;
|
|
|
|
for (i = 0; i < LAN9303_NUM_ALR_RECORDS; i++, entr++)
|
|
if (entr->port_map == 0)
|
|
return entr;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Return pointer to ALR cache entry matching MAC address */
|
|
static struct lan9303_alr_cache_entry *
|
|
lan9303_alr_cache_find_mac(struct lan9303 *chip, const u8 *mac_addr)
|
|
{
|
|
int i;
|
|
struct lan9303_alr_cache_entry *entr = chip->alr_cache;
|
|
|
|
BUILD_BUG_ON_MSG(sizeof(struct lan9303_alr_cache_entry) & 1,
|
|
"ether_addr_equal require u16 alignment");
|
|
|
|
for (i = 0; i < LAN9303_NUM_ALR_RECORDS; i++, entr++)
|
|
if (ether_addr_equal(entr->mac_addr, mac_addr))
|
|
return entr;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int lan9303_csr_reg_wait(struct lan9303 *chip, int regno, u32 mask)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 25; i++) {
|
|
u32 reg;
|
|
|
|
lan9303_read_switch_reg(chip, regno, ®);
|
|
if (!(reg & mask))
|
|
return 0;
|
|
usleep_range(1000, 2000);
|
|
}
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
static int lan9303_alr_make_entry_raw(struct lan9303 *chip, u32 dat0, u32 dat1)
|
|
{
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_WR_DAT_0, dat0);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_WR_DAT_1, dat1);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
|
|
LAN9303_ALR_CMD_MAKE_ENTRY);
|
|
lan9303_csr_reg_wait(chip, LAN9303_SWE_ALR_CMD_STS, ALR_STS_MAKE_PEND);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
typedef int alr_loop_cb_t(struct lan9303 *chip, u32 dat0, u32 dat1,
|
|
int portmap, void *ctx);
|
|
|
|
static int lan9303_alr_loop(struct lan9303 *chip, alr_loop_cb_t *cb, void *ctx)
|
|
{
|
|
int ret = 0, i;
|
|
|
|
mutex_lock(&chip->alr_mutex);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
|
|
LAN9303_ALR_CMD_GET_FIRST);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
|
|
|
|
for (i = 1; i < LAN9303_NUM_ALR_RECORDS; i++) {
|
|
u32 dat0, dat1;
|
|
int alrport, portmap;
|
|
|
|
lan9303_read_switch_reg(chip, LAN9303_SWE_ALR_RD_DAT_0, &dat0);
|
|
lan9303_read_switch_reg(chip, LAN9303_SWE_ALR_RD_DAT_1, &dat1);
|
|
if (dat1 & LAN9303_ALR_DAT1_END_OF_TABL)
|
|
break;
|
|
|
|
alrport = (dat1 & LAN9303_ALR_DAT1_PORT_MASK) >>
|
|
LAN9303_ALR_DAT1_PORT_BITOFFS;
|
|
portmap = alrport_2_portmap[alrport];
|
|
|
|
ret = cb(chip, dat0, dat1, portmap, ctx);
|
|
if (ret)
|
|
break;
|
|
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD,
|
|
LAN9303_ALR_CMD_GET_NEXT);
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_ALR_CMD, 0);
|
|
}
|
|
mutex_unlock(&chip->alr_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void alr_reg_to_mac(u32 dat0, u32 dat1, u8 mac[6])
|
|
{
|
|
mac[0] = (dat0 >> 0) & 0xff;
|
|
mac[1] = (dat0 >> 8) & 0xff;
|
|
mac[2] = (dat0 >> 16) & 0xff;
|
|
mac[3] = (dat0 >> 24) & 0xff;
|
|
mac[4] = (dat1 >> 0) & 0xff;
|
|
mac[5] = (dat1 >> 8) & 0xff;
|
|
}
|
|
|
|
struct del_port_learned_ctx {
|
|
int port;
|
|
};
|
|
|
|
/* Clear learned (non-static) entry on given port */
|
|
static int alr_loop_cb_del_port_learned(struct lan9303 *chip, u32 dat0,
|
|
u32 dat1, int portmap, void *ctx)
|
|
{
|
|
struct del_port_learned_ctx *del_ctx = ctx;
|
|
int port = del_ctx->port;
|
|
|
|
if (((BIT(port) & portmap) == 0) || (dat1 & LAN9303_ALR_DAT1_STATIC))
|
|
return 0;
|
|
|
|
/* learned entries has only one port, we can just delete */
|
|
dat1 &= ~LAN9303_ALR_DAT1_VALID; /* delete entry */
|
|
lan9303_alr_make_entry_raw(chip, dat0, dat1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct port_fdb_dump_ctx {
|
|
int port;
|
|
void *data;
|
|
dsa_fdb_dump_cb_t *cb;
|
|
};
|
|
|
|
static int alr_loop_cb_fdb_port_dump(struct lan9303 *chip, u32 dat0,
|
|
u32 dat1, int portmap, void *ctx)
|
|
{
|
|
struct port_fdb_dump_ctx *dump_ctx = ctx;
|
|
u8 mac[ETH_ALEN];
|
|
bool is_static;
|
|
|
|
if ((BIT(dump_ctx->port) & portmap) == 0)
|
|
return 0;
|
|
|
|
alr_reg_to_mac(dat0, dat1, mac);
|
|
is_static = !!(dat1 & LAN9303_ALR_DAT1_STATIC);
|
|
return dump_ctx->cb(mac, 0, is_static, dump_ctx->data);
|
|
}
|
|
|
|
/* Set a static ALR entry. Delete entry if port_map is zero */
|
|
static void lan9303_alr_set_entry(struct lan9303 *chip, const u8 *mac,
|
|
u8 port_map, bool stp_override)
|
|
{
|
|
u32 dat0, dat1, alr_port;
|
|
|
|
dev_dbg(chip->dev, "%s(%pM, %d)\n", __func__, mac, port_map);
|
|
dat1 = LAN9303_ALR_DAT1_STATIC;
|
|
if (port_map)
|
|
dat1 |= LAN9303_ALR_DAT1_VALID;
|
|
/* otherwise no ports: delete entry */
|
|
if (stp_override)
|
|
dat1 |= LAN9303_ALR_DAT1_AGE_OVERRID;
|
|
|
|
alr_port = portmap_2_alrport[port_map & 7];
|
|
dat1 &= ~LAN9303_ALR_DAT1_PORT_MASK;
|
|
dat1 |= alr_port << LAN9303_ALR_DAT1_PORT_BITOFFS;
|
|
|
|
dat0 = 0;
|
|
dat0 |= (mac[0] << 0);
|
|
dat0 |= (mac[1] << 8);
|
|
dat0 |= (mac[2] << 16);
|
|
dat0 |= (mac[3] << 24);
|
|
|
|
dat1 |= (mac[4] << 0);
|
|
dat1 |= (mac[5] << 8);
|
|
|
|
lan9303_alr_make_entry_raw(chip, dat0, dat1);
|
|
}
|
|
|
|
/* Add port to static ALR entry, create new static entry if needed */
|
|
static int lan9303_alr_add_port(struct lan9303 *chip, const u8 *mac, int port,
|
|
bool stp_override)
|
|
{
|
|
struct lan9303_alr_cache_entry *entr;
|
|
|
|
mutex_lock(&chip->alr_mutex);
|
|
entr = lan9303_alr_cache_find_mac(chip, mac);
|
|
if (!entr) { /*New entry */
|
|
entr = lan9303_alr_cache_find_free(chip);
|
|
if (!entr) {
|
|
mutex_unlock(&chip->alr_mutex);
|
|
return -ENOSPC;
|
|
}
|
|
ether_addr_copy(entr->mac_addr, mac);
|
|
}
|
|
entr->port_map |= BIT(port);
|
|
entr->stp_override = stp_override;
|
|
lan9303_alr_set_entry(chip, mac, entr->port_map, stp_override);
|
|
mutex_unlock(&chip->alr_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Delete static port from ALR entry, delete entry if last port */
|
|
static int lan9303_alr_del_port(struct lan9303 *chip, const u8 *mac, int port)
|
|
{
|
|
struct lan9303_alr_cache_entry *entr;
|
|
|
|
mutex_lock(&chip->alr_mutex);
|
|
entr = lan9303_alr_cache_find_mac(chip, mac);
|
|
if (!entr)
|
|
goto out; /* no static entry found */
|
|
|
|
entr->port_map &= ~BIT(port);
|
|
if (entr->port_map == 0) /* zero means its free again */
|
|
eth_zero_addr(entr->mac_addr);
|
|
lan9303_alr_set_entry(chip, mac, entr->port_map, entr->stp_override);
|
|
|
|
out:
|
|
mutex_unlock(&chip->alr_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int lan9303_disable_processing_port(struct lan9303 *chip,
|
|
unsigned int port)
|
|
{
|
|
int ret;
|
|
|
|
/* disable RX, but keep register reset default values else */
|
|
ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,
|
|
LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* disable TX, but keep register reset default values else */
|
|
return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,
|
|
LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
|
|
LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
|
|
}
|
|
|
|
static int lan9303_enable_processing_port(struct lan9303 *chip,
|
|
unsigned int port)
|
|
{
|
|
int ret;
|
|
|
|
/* enable RX and keep register reset default values else */
|
|
ret = lan9303_write_switch_port(chip, port, LAN9303_MAC_RX_CFG_0,
|
|
LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
|
|
LAN9303_MAC_RX_CFG_X_RX_ENABLE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* enable TX and keep register reset default values else */
|
|
return lan9303_write_switch_port(chip, port, LAN9303_MAC_TX_CFG_0,
|
|
LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
|
|
LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
|
|
LAN9303_MAC_TX_CFG_X_TX_ENABLE);
|
|
}
|
|
|
|
/* forward special tagged packets from port 0 to port 1 *or* port 2 */
|
|
static int lan9303_setup_tagging(struct lan9303 *chip)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
/* enable defining the destination port via special VLAN tagging
|
|
* for port 0
|
|
*/
|
|
ret = lan9303_write_switch_reg(chip, LAN9303_SWE_INGRESS_PORT_TYPE,
|
|
LAN9303_SWE_INGRESS_PORT_TYPE_VLAN);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* tag incoming packets at port 1 and 2 on their way to port 0 to be
|
|
* able to discover their source port
|
|
*/
|
|
val = LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0;
|
|
return lan9303_write_switch_reg(chip, LAN9303_BM_EGRSS_PORT_TYPE, val);
|
|
}
|
|
|
|
/* We want a special working switch:
|
|
* - do not forward packets between port 1 and 2
|
|
* - forward everything from port 1 to port 0
|
|
* - forward everything from port 2 to port 0
|
|
*/
|
|
static int lan9303_separate_ports(struct lan9303 *chip)
|
|
{
|
|
int ret;
|
|
|
|
lan9303_alr_del_port(chip, eth_stp_addr, 0);
|
|
ret = lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_MIRROR,
|
|
LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT0 |
|
|
LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT1 |
|
|
LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT2 |
|
|
LAN9303_SWE_PORT_MIRROR_ENABLE_RX_MIRRORING |
|
|
LAN9303_SWE_PORT_MIRROR_SNIFF_ALL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* prevent port 1 and 2 from forwarding packets by their own */
|
|
return lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
|
|
LAN9303_SWE_PORT_STATE_FORWARDING_PORT0 |
|
|
LAN9303_SWE_PORT_STATE_BLOCKING_PORT1 |
|
|
LAN9303_SWE_PORT_STATE_BLOCKING_PORT2);
|
|
}
|
|
|
|
static void lan9303_bridge_ports(struct lan9303 *chip)
|
|
{
|
|
/* ports bridged: remove mirroring */
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_MIRROR,
|
|
LAN9303_SWE_PORT_MIRROR_DISABLED);
|
|
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
|
|
chip->swe_port_state);
|
|
lan9303_alr_add_port(chip, eth_stp_addr, 0, true);
|
|
}
|
|
|
|
static void lan9303_handle_reset(struct lan9303 *chip)
|
|
{
|
|
if (!chip->reset_gpio)
|
|
return;
|
|
|
|
if (chip->reset_duration != 0)
|
|
msleep(chip->reset_duration);
|
|
|
|
/* release (deassert) reset and activate the device */
|
|
gpiod_set_value_cansleep(chip->reset_gpio, 0);
|
|
}
|
|
|
|
/* stop processing packets for all ports */
|
|
static int lan9303_disable_processing(struct lan9303 *chip)
|
|
{
|
|
int p;
|
|
|
|
for (p = 1; p < LAN9303_NUM_PORTS; p++) {
|
|
int ret = lan9303_disable_processing_port(chip, p);
|
|
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan9303_check_device(struct lan9303 *chip)
|
|
{
|
|
int ret;
|
|
u32 reg;
|
|
|
|
ret = lan9303_read(chip->regmap, LAN9303_CHIP_REV, ®);
|
|
if (ret) {
|
|
dev_err(chip->dev, "failed to read chip revision register: %d\n",
|
|
ret);
|
|
if (!chip->reset_gpio) {
|
|
dev_dbg(chip->dev,
|
|
"hint: maybe failed due to missing reset GPIO\n");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if ((reg >> 16) != LAN9303_CHIP_ID) {
|
|
dev_err(chip->dev, "expecting LAN9303 chip, but found: %X\n",
|
|
reg >> 16);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* The default state of the LAN9303 device is to forward packets between
|
|
* all ports (if not configured differently by an external EEPROM).
|
|
* The initial state of a DSA device must be forwarding packets only
|
|
* between the external and the internal ports and no forwarding
|
|
* between the external ports. In preparation we stop packet handling
|
|
* at all for now until the LAN9303 device is re-programmed accordingly.
|
|
*/
|
|
ret = lan9303_disable_processing(chip);
|
|
if (ret)
|
|
dev_warn(chip->dev, "failed to disable switching %d\n", ret);
|
|
|
|
dev_info(chip->dev, "Found LAN9303 rev. %u\n", reg & 0xffff);
|
|
|
|
ret = lan9303_detect_phy_setup(chip);
|
|
if (ret) {
|
|
dev_err(chip->dev,
|
|
"failed to discover phy bootstrap setup: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ---------------------------- DSA -----------------------------------*/
|
|
|
|
static enum dsa_tag_protocol lan9303_get_tag_protocol(struct dsa_switch *ds,
|
|
int port,
|
|
enum dsa_tag_protocol mp)
|
|
{
|
|
return DSA_TAG_PROTO_LAN9303;
|
|
}
|
|
|
|
static int lan9303_setup(struct dsa_switch *ds)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
int ret;
|
|
|
|
/* Make sure that port 0 is the cpu port */
|
|
if (!dsa_is_cpu_port(ds, 0)) {
|
|
dev_err(chip->dev, "port 0 is not the CPU port\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = lan9303_setup_tagging(chip);
|
|
if (ret)
|
|
dev_err(chip->dev, "failed to setup port tagging %d\n", ret);
|
|
|
|
ret = lan9303_separate_ports(chip);
|
|
if (ret)
|
|
dev_err(chip->dev, "failed to separate ports %d\n", ret);
|
|
|
|
ret = lan9303_enable_processing_port(chip, 0);
|
|
if (ret)
|
|
dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
|
|
|
|
/* Trap IGMP to port 0 */
|
|
ret = lan9303_write_switch_reg_mask(chip, LAN9303_SWE_GLB_INGRESS_CFG,
|
|
LAN9303_SWE_GLB_INGR_IGMP_TRAP |
|
|
LAN9303_SWE_GLB_INGR_IGMP_PORT(0),
|
|
LAN9303_SWE_GLB_INGR_IGMP_PORT(1) |
|
|
LAN9303_SWE_GLB_INGR_IGMP_PORT(2));
|
|
if (ret)
|
|
dev_err(chip->dev, "failed to setup IGMP trap %d\n", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct lan9303_mib_desc {
|
|
unsigned int offset; /* offset of first MAC */
|
|
const char *name;
|
|
};
|
|
|
|
static const struct lan9303_mib_desc lan9303_mib[] = {
|
|
{ .offset = LAN9303_MAC_RX_BRDCST_CNT_0, .name = "RxBroad", },
|
|
{ .offset = LAN9303_MAC_RX_PAUSE_CNT_0, .name = "RxPause", },
|
|
{ .offset = LAN9303_MAC_RX_MULCST_CNT_0, .name = "RxMulti", },
|
|
{ .offset = LAN9303_MAC_RX_PKTOK_CNT_0, .name = "RxOk", },
|
|
{ .offset = LAN9303_MAC_RX_CRCERR_CNT_0, .name = "RxCrcErr", },
|
|
{ .offset = LAN9303_MAC_RX_ALIGN_CNT_0, .name = "RxAlignErr", },
|
|
{ .offset = LAN9303_MAC_RX_JABB_CNT_0, .name = "RxJabber", },
|
|
{ .offset = LAN9303_MAC_RX_FRAG_CNT_0, .name = "RxFragment", },
|
|
{ .offset = LAN9303_MAC_RX_64_CNT_0, .name = "Rx64Byte", },
|
|
{ .offset = LAN9303_MAC_RX_127_CNT_0, .name = "Rx128Byte", },
|
|
{ .offset = LAN9303_MAC_RX_255_CNT_0, .name = "Rx256Byte", },
|
|
{ .offset = LAN9303_MAC_RX_511_CNT_0, .name = "Rx512Byte", },
|
|
{ .offset = LAN9303_MAC_RX_1023_CNT_0, .name = "Rx1024Byte", },
|
|
{ .offset = LAN9303_MAC_RX_MAX_CNT_0, .name = "RxMaxByte", },
|
|
{ .offset = LAN9303_MAC_RX_PKTLEN_CNT_0, .name = "RxByteCnt", },
|
|
{ .offset = LAN9303_MAC_RX_SYMBL_CNT_0, .name = "RxSymbolCnt", },
|
|
{ .offset = LAN9303_MAC_RX_CTLFRM_CNT_0, .name = "RxCfs", },
|
|
{ .offset = LAN9303_MAC_RX_OVRSZE_CNT_0, .name = "RxOverFlow", },
|
|
{ .offset = LAN9303_MAC_TX_UNDSZE_CNT_0, .name = "TxShort", },
|
|
{ .offset = LAN9303_MAC_TX_BRDCST_CNT_0, .name = "TxBroad", },
|
|
{ .offset = LAN9303_MAC_TX_PAUSE_CNT_0, .name = "TxPause", },
|
|
{ .offset = LAN9303_MAC_TX_MULCST_CNT_0, .name = "TxMulti", },
|
|
{ .offset = LAN9303_MAC_RX_UNDSZE_CNT_0, .name = "TxUnderRun", },
|
|
{ .offset = LAN9303_MAC_TX_64_CNT_0, .name = "Tx64Byte", },
|
|
{ .offset = LAN9303_MAC_TX_127_CNT_0, .name = "Tx128Byte", },
|
|
{ .offset = LAN9303_MAC_TX_255_CNT_0, .name = "Tx256Byte", },
|
|
{ .offset = LAN9303_MAC_TX_511_CNT_0, .name = "Tx512Byte", },
|
|
{ .offset = LAN9303_MAC_TX_1023_CNT_0, .name = "Tx1024Byte", },
|
|
{ .offset = LAN9303_MAC_TX_MAX_CNT_0, .name = "TxMaxByte", },
|
|
{ .offset = LAN9303_MAC_TX_PKTLEN_CNT_0, .name = "TxByteCnt", },
|
|
{ .offset = LAN9303_MAC_TX_PKTOK_CNT_0, .name = "TxOk", },
|
|
{ .offset = LAN9303_MAC_TX_TOTALCOL_CNT_0, .name = "TxCollision", },
|
|
{ .offset = LAN9303_MAC_TX_MULTICOL_CNT_0, .name = "TxMultiCol", },
|
|
{ .offset = LAN9303_MAC_TX_SNGLECOL_CNT_0, .name = "TxSingleCol", },
|
|
{ .offset = LAN9303_MAC_TX_EXCOL_CNT_0, .name = "TxExcCol", },
|
|
{ .offset = LAN9303_MAC_TX_DEFER_CNT_0, .name = "TxDefer", },
|
|
{ .offset = LAN9303_MAC_TX_LATECOL_0, .name = "TxLateCol", },
|
|
};
|
|
|
|
static void lan9303_get_strings(struct dsa_switch *ds, int port,
|
|
u32 stringset, uint8_t *data)
|
|
{
|
|
unsigned int u;
|
|
|
|
if (stringset != ETH_SS_STATS)
|
|
return;
|
|
|
|
for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
|
|
strncpy(data + u * ETH_GSTRING_LEN, lan9303_mib[u].name,
|
|
ETH_GSTRING_LEN);
|
|
}
|
|
}
|
|
|
|
static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
|
|
uint64_t *data)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
unsigned int u;
|
|
|
|
for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
|
|
u32 reg;
|
|
int ret;
|
|
|
|
ret = lan9303_read_switch_port(
|
|
chip, port, lan9303_mib[u].offset, ®);
|
|
|
|
if (ret)
|
|
dev_warn(chip->dev, "Reading status port %d reg %u failed\n",
|
|
port, lan9303_mib[u].offset);
|
|
data[u] = reg;
|
|
}
|
|
}
|
|
|
|
static int lan9303_get_sset_count(struct dsa_switch *ds, int port, int sset)
|
|
{
|
|
if (sset != ETH_SS_STATS)
|
|
return 0;
|
|
|
|
return ARRAY_SIZE(lan9303_mib);
|
|
}
|
|
|
|
static int lan9303_phy_read(struct dsa_switch *ds, int phy, int regnum)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
int phy_base = chip->phy_addr_base;
|
|
|
|
if (phy == phy_base)
|
|
return lan9303_virt_phy_reg_read(chip, regnum);
|
|
if (phy > phy_base + 2)
|
|
return -ENODEV;
|
|
|
|
return chip->ops->phy_read(chip, phy, regnum);
|
|
}
|
|
|
|
static int lan9303_phy_write(struct dsa_switch *ds, int phy, int regnum,
|
|
u16 val)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
int phy_base = chip->phy_addr_base;
|
|
|
|
if (phy == phy_base)
|
|
return lan9303_virt_phy_reg_write(chip, regnum, val);
|
|
if (phy > phy_base + 2)
|
|
return -ENODEV;
|
|
|
|
return chip->ops->phy_write(chip, phy, regnum, val);
|
|
}
|
|
|
|
static void lan9303_adjust_link(struct dsa_switch *ds, int port,
|
|
struct phy_device *phydev)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
int ctl;
|
|
|
|
if (!phy_is_pseudo_fixed_link(phydev))
|
|
return;
|
|
|
|
ctl = lan9303_phy_read(ds, port, MII_BMCR);
|
|
|
|
ctl &= ~BMCR_ANENABLE;
|
|
|
|
if (phydev->speed == SPEED_100)
|
|
ctl |= BMCR_SPEED100;
|
|
else if (phydev->speed == SPEED_10)
|
|
ctl &= ~BMCR_SPEED100;
|
|
else
|
|
dev_err(ds->dev, "unsupported speed: %d\n", phydev->speed);
|
|
|
|
if (phydev->duplex == DUPLEX_FULL)
|
|
ctl |= BMCR_FULLDPLX;
|
|
else
|
|
ctl &= ~BMCR_FULLDPLX;
|
|
|
|
lan9303_phy_write(ds, port, MII_BMCR, ctl);
|
|
|
|
if (port == chip->phy_addr_base) {
|
|
/* Virtual Phy: Remove Turbo 200Mbit mode */
|
|
lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, &ctl);
|
|
|
|
ctl &= ~LAN9303_VIRT_SPECIAL_TURBO;
|
|
regmap_write(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, ctl);
|
|
}
|
|
}
|
|
|
|
static int lan9303_port_enable(struct dsa_switch *ds, int port,
|
|
struct phy_device *phy)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
if (!dsa_is_user_port(ds, port))
|
|
return 0;
|
|
|
|
return lan9303_enable_processing_port(chip, port);
|
|
}
|
|
|
|
static void lan9303_port_disable(struct dsa_switch *ds, int port)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
if (!dsa_is_user_port(ds, port))
|
|
return;
|
|
|
|
lan9303_disable_processing_port(chip, port);
|
|
lan9303_phy_write(ds, chip->phy_addr_base + port, MII_BMCR, BMCR_PDOWN);
|
|
}
|
|
|
|
static int lan9303_port_bridge_join(struct dsa_switch *ds, int port,
|
|
struct net_device *br)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(port %d)\n", __func__, port);
|
|
if (dsa_to_port(ds, 1)->bridge_dev == dsa_to_port(ds, 2)->bridge_dev) {
|
|
lan9303_bridge_ports(chip);
|
|
chip->is_bridged = true; /* unleash stp_state_set() */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void lan9303_port_bridge_leave(struct dsa_switch *ds, int port,
|
|
struct net_device *br)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(port %d)\n", __func__, port);
|
|
if (chip->is_bridged) {
|
|
lan9303_separate_ports(chip);
|
|
chip->is_bridged = false;
|
|
}
|
|
}
|
|
|
|
static void lan9303_port_stp_state_set(struct dsa_switch *ds, int port,
|
|
u8 state)
|
|
{
|
|
int portmask, portstate;
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(port %d, state %d)\n",
|
|
__func__, port, state);
|
|
|
|
switch (state) {
|
|
case BR_STATE_DISABLED:
|
|
portstate = LAN9303_SWE_PORT_STATE_DISABLED_PORT0;
|
|
break;
|
|
case BR_STATE_BLOCKING:
|
|
case BR_STATE_LISTENING:
|
|
portstate = LAN9303_SWE_PORT_STATE_BLOCKING_PORT0;
|
|
break;
|
|
case BR_STATE_LEARNING:
|
|
portstate = LAN9303_SWE_PORT_STATE_LEARNING_PORT0;
|
|
break;
|
|
case BR_STATE_FORWARDING:
|
|
portstate = LAN9303_SWE_PORT_STATE_FORWARDING_PORT0;
|
|
break;
|
|
default:
|
|
portstate = LAN9303_SWE_PORT_STATE_DISABLED_PORT0;
|
|
dev_err(chip->dev, "unknown stp state: port %d, state %d\n",
|
|
port, state);
|
|
}
|
|
|
|
portmask = 0x3 << (port * 2);
|
|
portstate <<= (port * 2);
|
|
|
|
chip->swe_port_state = (chip->swe_port_state & ~portmask) | portstate;
|
|
|
|
if (chip->is_bridged)
|
|
lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
|
|
chip->swe_port_state);
|
|
/* else: touching SWE_PORT_STATE would break port separation */
|
|
}
|
|
|
|
static void lan9303_port_fast_age(struct dsa_switch *ds, int port)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
struct del_port_learned_ctx del_ctx = {
|
|
.port = port,
|
|
};
|
|
|
|
dev_dbg(chip->dev, "%s(%d)\n", __func__, port);
|
|
lan9303_alr_loop(chip, alr_loop_cb_del_port_learned, &del_ctx);
|
|
}
|
|
|
|
static int lan9303_port_fdb_add(struct dsa_switch *ds, int port,
|
|
const unsigned char *addr, u16 vid)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, addr, vid);
|
|
if (vid)
|
|
return -EOPNOTSUPP;
|
|
|
|
return lan9303_alr_add_port(chip, addr, port, false);
|
|
}
|
|
|
|
static int lan9303_port_fdb_del(struct dsa_switch *ds, int port,
|
|
const unsigned char *addr, u16 vid)
|
|
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, addr, vid);
|
|
if (vid)
|
|
return -EOPNOTSUPP;
|
|
lan9303_alr_del_port(chip, addr, port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan9303_port_fdb_dump(struct dsa_switch *ds, int port,
|
|
dsa_fdb_dump_cb_t *cb, void *data)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
struct port_fdb_dump_ctx dump_ctx = {
|
|
.port = port,
|
|
.data = data,
|
|
.cb = cb,
|
|
};
|
|
|
|
dev_dbg(chip->dev, "%s(%d)\n", __func__, port);
|
|
return lan9303_alr_loop(chip, alr_loop_cb_fdb_port_dump, &dump_ctx);
|
|
}
|
|
|
|
static int lan9303_port_mdb_prepare(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
|
|
mdb->vid);
|
|
if (mdb->vid)
|
|
return -EOPNOTSUPP;
|
|
if (lan9303_alr_cache_find_mac(chip, mdb->addr))
|
|
return 0;
|
|
if (!lan9303_alr_cache_find_free(chip))
|
|
return -ENOSPC;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lan9303_port_mdb_add(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
int err;
|
|
|
|
err = lan9303_port_mdb_prepare(ds, port, mdb);
|
|
if (err)
|
|
return err;
|
|
|
|
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
|
|
mdb->vid);
|
|
return lan9303_alr_add_port(chip, mdb->addr, port, false);
|
|
}
|
|
|
|
static int lan9303_port_mdb_del(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_mdb *mdb)
|
|
{
|
|
struct lan9303 *chip = ds->priv;
|
|
|
|
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, mdb->addr,
|
|
mdb->vid);
|
|
if (mdb->vid)
|
|
return -EOPNOTSUPP;
|
|
lan9303_alr_del_port(chip, mdb->addr, port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dsa_switch_ops lan9303_switch_ops = {
|
|
.get_tag_protocol = lan9303_get_tag_protocol,
|
|
.setup = lan9303_setup,
|
|
.get_strings = lan9303_get_strings,
|
|
.phy_read = lan9303_phy_read,
|
|
.phy_write = lan9303_phy_write,
|
|
.adjust_link = lan9303_adjust_link,
|
|
.get_ethtool_stats = lan9303_get_ethtool_stats,
|
|
.get_sset_count = lan9303_get_sset_count,
|
|
.port_enable = lan9303_port_enable,
|
|
.port_disable = lan9303_port_disable,
|
|
.port_bridge_join = lan9303_port_bridge_join,
|
|
.port_bridge_leave = lan9303_port_bridge_leave,
|
|
.port_stp_state_set = lan9303_port_stp_state_set,
|
|
.port_fast_age = lan9303_port_fast_age,
|
|
.port_fdb_add = lan9303_port_fdb_add,
|
|
.port_fdb_del = lan9303_port_fdb_del,
|
|
.port_fdb_dump = lan9303_port_fdb_dump,
|
|
.port_mdb_add = lan9303_port_mdb_add,
|
|
.port_mdb_del = lan9303_port_mdb_del,
|
|
};
|
|
|
|
static int lan9303_register_switch(struct lan9303 *chip)
|
|
{
|
|
int base;
|
|
|
|
chip->ds = devm_kzalloc(chip->dev, sizeof(*chip->ds), GFP_KERNEL);
|
|
if (!chip->ds)
|
|
return -ENOMEM;
|
|
|
|
chip->ds->dev = chip->dev;
|
|
chip->ds->num_ports = LAN9303_NUM_PORTS;
|
|
chip->ds->priv = chip;
|
|
chip->ds->ops = &lan9303_switch_ops;
|
|
base = chip->phy_addr_base;
|
|
chip->ds->phys_mii_mask = GENMASK(LAN9303_NUM_PORTS - 1 + base, base);
|
|
|
|
return dsa_register_switch(chip->ds);
|
|
}
|
|
|
|
static int lan9303_probe_reset_gpio(struct lan9303 *chip,
|
|
struct device_node *np)
|
|
{
|
|
chip->reset_gpio = devm_gpiod_get_optional(chip->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(chip->reset_gpio))
|
|
return PTR_ERR(chip->reset_gpio);
|
|
|
|
if (!chip->reset_gpio) {
|
|
dev_dbg(chip->dev, "No reset GPIO defined\n");
|
|
return 0;
|
|
}
|
|
|
|
chip->reset_duration = 200;
|
|
|
|
if (np) {
|
|
of_property_read_u32(np, "reset-duration",
|
|
&chip->reset_duration);
|
|
} else {
|
|
dev_dbg(chip->dev, "reset duration defaults to 200 ms\n");
|
|
}
|
|
|
|
/* A sane reset duration should not be longer than 1s */
|
|
if (chip->reset_duration > 1000)
|
|
chip->reset_duration = 1000;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int lan9303_probe(struct lan9303 *chip, struct device_node *np)
|
|
{
|
|
int ret;
|
|
|
|
mutex_init(&chip->indirect_mutex);
|
|
mutex_init(&chip->alr_mutex);
|
|
|
|
ret = lan9303_probe_reset_gpio(chip, np);
|
|
if (ret)
|
|
return ret;
|
|
|
|
lan9303_handle_reset(chip);
|
|
|
|
ret = lan9303_check_device(chip);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = lan9303_register_switch(chip);
|
|
if (ret) {
|
|
dev_dbg(chip->dev, "Failed to register switch: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(lan9303_probe);
|
|
|
|
int lan9303_remove(struct lan9303 *chip)
|
|
{
|
|
int rc;
|
|
|
|
rc = lan9303_disable_processing(chip);
|
|
if (rc != 0)
|
|
dev_warn(chip->dev, "shutting down failed\n");
|
|
|
|
dsa_unregister_switch(chip->ds);
|
|
|
|
/* assert reset to the whole device to prevent it from doing anything */
|
|
gpiod_set_value_cansleep(chip->reset_gpio, 1);
|
|
gpiod_unexport(chip->reset_gpio);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(lan9303_remove);
|
|
|
|
MODULE_AUTHOR("Juergen Borleis <kernel@pengutronix.de>");
|
|
MODULE_DESCRIPTION("Core driver for SMSC/Microchip LAN9303 three port ethernet switch");
|
|
MODULE_LICENSE("GPL v2");
|