forked from Minki/linux
ddda1ac116
The MediaTek MT7621 SoC device contains a 7530 switch, and the existing linux kernel 7530 DSA switch driver can be used with it. The bulk of the changes required stem from the 7621 having different regulator and pad setup. The existing setup of these in the 7530 driver appears to be very specific to its implemtation in the Mediatek 7623 SoC. (Not entirely surprising given the 7623 is a quad core ARM based SoC, and the 7621 is a dual core, dual thread MIPS based SoC). Create a new devicetree type, "mediatek,mt7621", to support the 7530 switch in the 7621 SoC. There appears to be no usable ID register to distinguish it from a 7530 in other hardware at runtime. This is used to carry out the appropriate configuration and setup. Signed-off-by: Greg Ungerer <gerg@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Sean Wang <sean.wang@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
484 lines
13 KiB
C
484 lines
13 KiB
C
/*
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* Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __MT7530_H
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#define __MT7530_H
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#define MT7530_NUM_PORTS 7
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#define MT7530_CPU_PORT 6
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#define MT7530_NUM_FDB_RECORDS 2048
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#define MT7530_ALL_MEMBERS 0xff
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enum {
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ID_MT7530 = 0,
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ID_MT7621 = 1,
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};
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#define NUM_TRGMII_CTRL 5
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#define TRGMII_BASE(x) (0x10000 + (x))
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/* Registers to ethsys access */
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#define ETHSYS_CLKCFG0 0x2c
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#define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11)
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#define SYSC_REG_RSTCTRL 0x34
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#define RESET_MCM BIT(2)
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/* Registers to mac forward control for unknown frames */
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#define MT7530_MFC 0x10
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#define BC_FFP(x) (((x) & 0xff) << 24)
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#define UNM_FFP(x) (((x) & 0xff) << 16)
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#define UNU_FFP(x) (((x) & 0xff) << 8)
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#define UNU_FFP_MASK UNU_FFP(~0)
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#define CPU_EN BIT(7)
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#define CPU_PORT(x) ((x) << 4)
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#define CPU_MASK (0xf << 4)
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/* Registers for address table access */
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#define MT7530_ATA1 0x74
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#define STATIC_EMP 0
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#define STATIC_ENT 3
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#define MT7530_ATA2 0x78
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/* Register for address table write data */
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#define MT7530_ATWD 0x7c
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/* Register for address table control */
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#define MT7530_ATC 0x80
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#define ATC_HASH (((x) & 0xfff) << 16)
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#define ATC_BUSY BIT(15)
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#define ATC_SRCH_END BIT(14)
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#define ATC_SRCH_HIT BIT(13)
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#define ATC_INVALID BIT(12)
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#define ATC_MAT(x) (((x) & 0xf) << 8)
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#define ATC_MAT_MACTAB ATC_MAT(0)
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enum mt7530_fdb_cmd {
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MT7530_FDB_READ = 0,
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MT7530_FDB_WRITE = 1,
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MT7530_FDB_FLUSH = 2,
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MT7530_FDB_START = 4,
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MT7530_FDB_NEXT = 5,
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};
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/* Registers for table search read address */
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#define MT7530_TSRA1 0x84
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#define MAC_BYTE_0 24
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#define MAC_BYTE_1 16
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#define MAC_BYTE_2 8
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#define MAC_BYTE_3 0
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#define MAC_BYTE_MASK 0xff
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#define MT7530_TSRA2 0x88
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#define MAC_BYTE_4 24
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#define MAC_BYTE_5 16
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#define CVID 0
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#define CVID_MASK 0xfff
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#define MT7530_ATRD 0x8C
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#define AGE_TIMER 24
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#define AGE_TIMER_MASK 0xff
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#define PORT_MAP 4
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#define PORT_MAP_MASK 0xff
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#define ENT_STATUS 2
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#define ENT_STATUS_MASK 0x3
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/* Register for vlan table control */
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#define MT7530_VTCR 0x90
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#define VTCR_BUSY BIT(31)
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#define VTCR_INVALID BIT(16)
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#define VTCR_FUNC(x) (((x) & 0xf) << 12)
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#define VTCR_VID ((x) & 0xfff)
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enum mt7530_vlan_cmd {
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/* Read/Write the specified VID entry from VAWD register based
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* on VID.
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*/
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MT7530_VTCR_RD_VID = 0,
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MT7530_VTCR_WR_VID = 1,
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};
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/* Register for setup vlan and acl write data */
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#define MT7530_VAWD1 0x94
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#define PORT_STAG BIT(31)
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/* Independent VLAN Learning */
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#define IVL_MAC BIT(30)
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/* Per VLAN Egress Tag Control */
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#define VTAG_EN BIT(28)
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/* VLAN Member Control */
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#define PORT_MEM(x) (((x) & 0xff) << 16)
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/* VLAN Entry Valid */
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#define VLAN_VALID BIT(0)
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#define PORT_MEM_SHFT 16
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#define PORT_MEM_MASK 0xff
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#define MT7530_VAWD2 0x98
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/* Egress Tag Control */
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#define ETAG_CTRL_P(p, x) (((x) & 0x3) << ((p) << 1))
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#define ETAG_CTRL_P_MASK(p) ETAG_CTRL_P(p, 3)
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enum mt7530_vlan_egress_attr {
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MT7530_VLAN_EGRESS_UNTAG = 0,
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MT7530_VLAN_EGRESS_TAG = 2,
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MT7530_VLAN_EGRESS_STACK = 3,
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};
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/* Register for port STP state control */
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#define MT7530_SSP_P(x) (0x2000 + ((x) * 0x100))
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#define FID_PST(x) ((x) & 0x3)
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#define FID_PST_MASK FID_PST(0x3)
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enum mt7530_stp_state {
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MT7530_STP_DISABLED = 0,
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MT7530_STP_BLOCKING = 1,
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MT7530_STP_LISTENING = 1,
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MT7530_STP_LEARNING = 2,
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MT7530_STP_FORWARDING = 3
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};
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/* Register for port control */
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#define MT7530_PCR_P(x) (0x2004 + ((x) * 0x100))
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#define PORT_VLAN(x) ((x) & 0x3)
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enum mt7530_port_mode {
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/* Port Matrix Mode: Frames are forwarded by the PCR_MATRIX members. */
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MT7530_PORT_MATRIX_MODE = PORT_VLAN(0),
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/* Security Mode: Discard any frame due to ingress membership
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* violation or VID missed on the VLAN table.
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*/
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MT7530_PORT_SECURITY_MODE = PORT_VLAN(3),
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};
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#define PCR_MATRIX(x) (((x) & 0xff) << 16)
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#define PORT_PRI(x) (((x) & 0x7) << 24)
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#define EG_TAG(x) (((x) & 0x3) << 28)
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#define PCR_MATRIX_MASK PCR_MATRIX(0xff)
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#define PCR_MATRIX_CLR PCR_MATRIX(0)
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#define PCR_PORT_VLAN_MASK PORT_VLAN(3)
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/* Register for port security control */
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#define MT7530_PSC_P(x) (0x200c + ((x) * 0x100))
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#define SA_DIS BIT(4)
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/* Register for port vlan control */
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#define MT7530_PVC_P(x) (0x2010 + ((x) * 0x100))
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#define PORT_SPEC_TAG BIT(5)
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#define VLAN_ATTR(x) (((x) & 0x3) << 6)
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#define VLAN_ATTR_MASK VLAN_ATTR(3)
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enum mt7530_vlan_port_attr {
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MT7530_VLAN_USER = 0,
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MT7530_VLAN_TRANSPARENT = 3,
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};
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#define STAG_VPID (((x) & 0xffff) << 16)
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/* Register for port port-and-protocol based vlan 1 control */
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#define MT7530_PPBV1_P(x) (0x2014 + ((x) * 0x100))
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#define G0_PORT_VID(x) (((x) & 0xfff) << 0)
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#define G0_PORT_VID_MASK G0_PORT_VID(0xfff)
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#define G0_PORT_VID_DEF G0_PORT_VID(1)
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/* Register for port MAC control register */
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#define MT7530_PMCR_P(x) (0x3000 + ((x) * 0x100))
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#define PMCR_IFG_XMIT(x) (((x) & 0x3) << 18)
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#define PMCR_MAC_MODE BIT(16)
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#define PMCR_FORCE_MODE BIT(15)
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#define PMCR_TX_EN BIT(14)
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#define PMCR_RX_EN BIT(13)
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#define PMCR_BACKOFF_EN BIT(9)
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#define PMCR_BACKPR_EN BIT(8)
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#define PMCR_TX_FC_EN BIT(5)
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#define PMCR_RX_FC_EN BIT(4)
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#define PMCR_FORCE_SPEED_1000 BIT(3)
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#define PMCR_FORCE_SPEED_100 BIT(2)
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#define PMCR_FORCE_FDX BIT(1)
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#define PMCR_FORCE_LNK BIT(0)
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#define PMCR_COMMON_LINK (PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | \
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PMCR_BACKOFF_EN | PMCR_BACKPR_EN | \
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PMCR_TX_EN | PMCR_RX_EN | \
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PMCR_TX_FC_EN | PMCR_RX_FC_EN)
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#define PMCR_CPUP_LINK (PMCR_COMMON_LINK | PMCR_FORCE_MODE | \
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PMCR_FORCE_SPEED_1000 | \
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PMCR_FORCE_FDX | \
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PMCR_FORCE_LNK)
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#define PMCR_USERP_LINK PMCR_COMMON_LINK
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#define PMCR_FIXED_LINK (PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | \
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PMCR_FORCE_MODE | PMCR_TX_EN | \
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PMCR_RX_EN | PMCR_BACKPR_EN | \
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PMCR_BACKOFF_EN | \
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PMCR_FORCE_SPEED_1000 | \
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PMCR_FORCE_FDX | \
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PMCR_FORCE_LNK)
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#define PMCR_FIXED_LINK_FC (PMCR_FIXED_LINK | \
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PMCR_TX_FC_EN | PMCR_RX_FC_EN)
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#define MT7530_PMSR_P(x) (0x3008 + (x) * 0x100)
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/* Register for MIB */
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#define MT7530_PORT_MIB_COUNTER(x) (0x4000 + (x) * 0x100)
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#define MT7530_MIB_CCR 0x4fe0
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#define CCR_MIB_ENABLE BIT(31)
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#define CCR_RX_OCT_CNT_GOOD BIT(7)
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#define CCR_RX_OCT_CNT_BAD BIT(6)
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#define CCR_TX_OCT_CNT_GOOD BIT(5)
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#define CCR_TX_OCT_CNT_BAD BIT(4)
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#define CCR_MIB_FLUSH (CCR_RX_OCT_CNT_GOOD | \
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CCR_RX_OCT_CNT_BAD | \
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CCR_TX_OCT_CNT_GOOD | \
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CCR_TX_OCT_CNT_BAD)
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#define CCR_MIB_ACTIVATE (CCR_MIB_ENABLE | \
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CCR_RX_OCT_CNT_GOOD | \
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CCR_RX_OCT_CNT_BAD | \
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CCR_TX_OCT_CNT_GOOD | \
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CCR_TX_OCT_CNT_BAD)
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/* Register for system reset */
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#define MT7530_SYS_CTRL 0x7000
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#define SYS_CTRL_PHY_RST BIT(2)
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#define SYS_CTRL_SW_RST BIT(1)
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#define SYS_CTRL_REG_RST BIT(0)
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/* Register for hw trap status */
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#define MT7530_HWTRAP 0x7800
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/* Register for hw trap modification */
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#define MT7530_MHWTRAP 0x7804
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#define MHWTRAP_MANUAL BIT(16)
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#define MHWTRAP_P5_MAC_SEL BIT(13)
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#define MHWTRAP_P6_DIS BIT(8)
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#define MHWTRAP_P5_RGMII_MODE BIT(7)
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#define MHWTRAP_P5_DIS BIT(6)
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#define MHWTRAP_PHY_ACCESS BIT(5)
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/* Register for TOP signal control */
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#define MT7530_TOP_SIG_CTRL 0x7808
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#define TOP_SIG_CTRL_NORMAL (BIT(17) | BIT(16))
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#define MT7530_IO_DRV_CR 0x7810
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#define P5_IO_CLK_DRV(x) ((x) & 0x3)
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#define P5_IO_DATA_DRV(x) (((x) & 0x3) << 4)
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#define MT7530_P6ECR 0x7830
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#define P6_INTF_MODE_MASK 0x3
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#define P6_INTF_MODE(x) ((x) & 0x3)
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/* Registers for TRGMII on the both side */
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#define MT7530_TRGMII_RCK_CTRL 0x7a00
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#define GSW_TRGMII_RCK_CTRL 0x300
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#define RX_RST BIT(31)
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#define RXC_DQSISEL BIT(30)
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#define DQSI1_TAP_MASK (0x7f << 8)
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#define DQSI0_TAP_MASK 0x7f
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#define DQSI1_TAP(x) (((x) & 0x7f) << 8)
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#define DQSI0_TAP(x) ((x) & 0x7f)
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#define MT7530_TRGMII_RCK_RTT 0x7a04
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#define GSW_TRGMII_RCK_RTT 0x304
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#define DQS1_GATE BIT(31)
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#define DQS0_GATE BIT(30)
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#define MT7530_TRGMII_RD(x) (0x7a10 + (x) * 8)
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#define GSW_TRGMII_RD(x) (0x310 + (x) * 8)
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#define BSLIP_EN BIT(31)
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#define EDGE_CHK BIT(30)
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#define RD_TAP_MASK 0x7f
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#define RD_TAP(x) ((x) & 0x7f)
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#define GSW_TRGMII_TXCTRL 0x340
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#define MT7530_TRGMII_TXCTRL 0x7a40
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#define TRAIN_TXEN BIT(31)
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#define TXC_INV BIT(30)
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#define TX_RST BIT(28)
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#define MT7530_TRGMII_TD_ODT(i) (0x7a54 + 8 * (i))
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#define GSW_TRGMII_TD_ODT(i) (0x354 + 8 * (i))
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#define TD_DM_DRVP(x) ((x) & 0xf)
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#define TD_DM_DRVN(x) (((x) & 0xf) << 4)
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#define GSW_INTF_MODE 0x390
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#define INTF_MODE_TRGMII BIT(1)
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#define MT7530_TRGMII_TCK_CTRL 0x7a78
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#define TCK_TAP(x) (((x) & 0xf) << 8)
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#define MT7530_P5RGMIIRXCR 0x7b00
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#define CSR_RGMII_EDGE_ALIGN BIT(8)
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#define CSR_RGMII_RXC_0DEG_CFG(x) ((x) & 0xf)
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#define MT7530_P5RGMIITXCR 0x7b04
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#define CSR_RGMII_TXC_CFG(x) ((x) & 0x1f)
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#define MT7530_CREV 0x7ffc
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#define CHIP_NAME_SHIFT 16
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#define MT7530_ID 0x7530
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/* Registers for core PLL access through mmd indirect */
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#define CORE_PLL_GROUP2 0x401
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#define RG_SYSPLL_EN_NORMAL BIT(15)
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#define RG_SYSPLL_VODEN BIT(14)
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#define RG_SYSPLL_LF BIT(13)
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#define RG_SYSPLL_RST_DLY(x) (((x) & 0x3) << 12)
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#define RG_SYSPLL_LVROD_EN BIT(10)
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#define RG_SYSPLL_PREDIV(x) (((x) & 0x3) << 8)
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#define RG_SYSPLL_POSDIV(x) (((x) & 0x3) << 5)
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#define RG_SYSPLL_FBKSEL BIT(4)
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#define RT_SYSPLL_EN_AFE_OLT BIT(0)
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#define CORE_PLL_GROUP4 0x403
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#define RG_SYSPLL_DDSFBK_EN BIT(12)
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#define RG_SYSPLL_BIAS_EN BIT(11)
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#define RG_SYSPLL_BIAS_LPF_EN BIT(10)
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#define CORE_PLL_GROUP5 0x404
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#define RG_LCDDS_PCW_NCPO1(x) ((x) & 0xffff)
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#define CORE_PLL_GROUP6 0x405
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#define RG_LCDDS_PCW_NCPO0(x) ((x) & 0xffff)
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#define CORE_PLL_GROUP7 0x406
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#define RG_LCDDS_PWDB BIT(15)
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#define RG_LCDDS_ISO_EN BIT(13)
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#define RG_LCCDS_C(x) (((x) & 0x7) << 4)
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#define RG_LCDDS_PCW_NCPO_CHG BIT(3)
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#define CORE_PLL_GROUP10 0x409
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#define RG_LCDDS_SSC_DELTA(x) ((x) & 0xfff)
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#define CORE_PLL_GROUP11 0x40a
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#define RG_LCDDS_SSC_DELTA1(x) ((x) & 0xfff)
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#define CORE_GSWPLL_GRP1 0x40d
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#define RG_GSWPLL_PREDIV(x) (((x) & 0x3) << 14)
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#define RG_GSWPLL_POSDIV_200M(x) (((x) & 0x3) << 12)
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#define RG_GSWPLL_EN_PRE BIT(11)
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#define RG_GSWPLL_FBKSEL BIT(10)
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#define RG_GSWPLL_BP BIT(9)
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#define RG_GSWPLL_BR BIT(8)
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#define RG_GSWPLL_FBKDIV_200M(x) ((x) & 0xff)
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#define CORE_GSWPLL_GRP2 0x40e
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#define RG_GSWPLL_POSDIV_500M(x) (((x) & 0x3) << 8)
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#define RG_GSWPLL_FBKDIV_500M(x) ((x) & 0xff)
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#define CORE_TRGMII_GSW_CLK_CG 0x410
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#define REG_GSWCK_EN BIT(0)
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#define REG_TRGMIICK_EN BIT(1)
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#define MIB_DESC(_s, _o, _n) \
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{ \
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.size = (_s), \
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.offset = (_o), \
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.name = (_n), \
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}
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struct mt7530_mib_desc {
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unsigned int size;
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unsigned int offset;
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const char *name;
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};
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struct mt7530_fdb {
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u16 vid;
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u8 port_mask;
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u8 aging;
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u8 mac[6];
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bool noarp;
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};
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/* struct mt7530_port - This is the main data structure for holding the state
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* of the port.
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* @enable: The status used for show port is enabled or not.
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* @pm: The matrix used to show all connections with the port.
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* @pvid: The VLAN specified is to be considered a PVID at ingress. Any
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* untagged frames will be assigned to the related VLAN.
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* @vlan_filtering: The flags indicating whether the port that can recognize
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* VLAN-tagged frames.
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*/
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struct mt7530_port {
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bool enable;
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u32 pm;
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u16 pvid;
|
|
bool vlan_filtering;
|
|
};
|
|
|
|
/* struct mt7530_priv - This is the main data structure for holding the state
|
|
* of the driver
|
|
* @dev: The device pointer
|
|
* @ds: The pointer to the dsa core structure
|
|
* @bus: The bus used for the device and built-in PHY
|
|
* @rstc: The pointer to reset control used by MCM
|
|
* @ethernet: The regmap used for access TRGMII-based registers
|
|
* @core_pwr: The power supplied into the core
|
|
* @io_pwr: The power supplied into the I/O
|
|
* @reset: The descriptor for GPIO line tied to its reset pin
|
|
* @mcm: Flag for distinguishing if standalone IC or module
|
|
* coupling
|
|
* @ports: Holding the state among ports
|
|
* @reg_mutex: The lock for protecting among process accessing
|
|
* registers
|
|
*/
|
|
struct mt7530_priv {
|
|
struct device *dev;
|
|
struct dsa_switch *ds;
|
|
struct mii_bus *bus;
|
|
struct reset_control *rstc;
|
|
struct regmap *ethernet;
|
|
struct regulator *core_pwr;
|
|
struct regulator *io_pwr;
|
|
struct gpio_desc *reset;
|
|
unsigned int id;
|
|
bool mcm;
|
|
|
|
struct mt7530_port ports[MT7530_NUM_PORTS];
|
|
/* protect among processes for registers access*/
|
|
struct mutex reg_mutex;
|
|
};
|
|
|
|
struct mt7530_hw_vlan_entry {
|
|
int port;
|
|
u8 old_members;
|
|
bool untagged;
|
|
};
|
|
|
|
static inline void mt7530_hw_vlan_entry_init(struct mt7530_hw_vlan_entry *e,
|
|
int port, bool untagged)
|
|
{
|
|
e->port = port;
|
|
e->untagged = untagged;
|
|
}
|
|
|
|
typedef void (*mt7530_vlan_op)(struct mt7530_priv *,
|
|
struct mt7530_hw_vlan_entry *);
|
|
|
|
struct mt7530_hw_stats {
|
|
const char *string;
|
|
u16 reg;
|
|
u8 sizeof_stat;
|
|
};
|
|
|
|
struct mt7530_dummy_poll {
|
|
struct mt7530_priv *priv;
|
|
u32 reg;
|
|
};
|
|
|
|
static inline void INIT_MT7530_DUMMY_POLL(struct mt7530_dummy_poll *p,
|
|
struct mt7530_priv *priv, u32 reg)
|
|
{
|
|
p->priv = priv;
|
|
p->reg = reg;
|
|
}
|
|
|
|
#endif /* __MT7530_H */
|