479 строки
14 KiB
C
479 строки
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Thunderbolt driver - Port/Switch config area registers
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*
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* Every thunderbolt device consists (logically) of a switch with multiple
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* ports. Every port contains up to four config regions (HOPS, PORT, SWITCH,
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* COUNTERS) which are used to configure the device.
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*
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* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
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* Copyright (C) 2018, Intel Corporation
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*/
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#ifndef _TB_REGS
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#define _TB_REGS
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#include <linux/types.h>
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#define TB_ROUTE_SHIFT 8 /* number of bits in a port entry of a route */
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/*
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* TODO: should be 63? But we do not know how to receive frames larger than 256
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* bytes at the frame level. (header + checksum = 16, 60*4 = 240)
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*/
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#define TB_MAX_CONFIG_RW_LENGTH 60
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enum tb_switch_cap {
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TB_SWITCH_CAP_TMU = 0x03,
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TB_SWITCH_CAP_VSE = 0x05,
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};
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enum tb_switch_vse_cap {
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TB_VSE_CAP_PLUG_EVENTS = 0x01, /* also EEPROM */
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TB_VSE_CAP_TIME2 = 0x03,
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TB_VSE_CAP_IECS = 0x04,
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TB_VSE_CAP_LINK_CONTROLLER = 0x06, /* also IECS */
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};
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enum tb_port_cap {
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TB_PORT_CAP_PHY = 0x01,
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TB_PORT_CAP_POWER = 0x02,
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TB_PORT_CAP_TIME1 = 0x03,
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TB_PORT_CAP_ADAP = 0x04,
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TB_PORT_CAP_VSE = 0x05,
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TB_PORT_CAP_USB4 = 0x06,
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};
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enum tb_port_state {
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TB_PORT_DISABLED = 0, /* tb_cap_phy.disable == 1 */
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TB_PORT_CONNECTING = 1, /* retry */
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TB_PORT_UP = 2,
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TB_PORT_UNPLUGGED = 7,
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};
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/* capability headers */
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struct tb_cap_basic {
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u8 next;
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/* enum tb_cap cap:8; prevent "narrower than values of its type" */
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u8 cap; /* if cap == 0x05 then we have a extended capability */
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} __packed;
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/**
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* struct tb_cap_extended_short - Switch extended short capability
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* @next: Pointer to the next capability. If @next and @length are zero
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* then we have a long cap.
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* @cap: Base capability ID (see &enum tb_switch_cap)
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* @vsec_id: Vendor specific capability ID (see &enum switch_vse_cap)
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* @length: Length of this capability
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*/
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struct tb_cap_extended_short {
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u8 next;
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u8 cap;
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u8 vsec_id;
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u8 length;
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} __packed;
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/**
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* struct tb_cap_extended_long - Switch extended long capability
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* @zero1: This field should be zero
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* @cap: Base capability ID (see &enum tb_switch_cap)
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* @vsec_id: Vendor specific capability ID (see &enum switch_vse_cap)
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* @zero2: This field should be zero
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* @next: Pointer to the next capability
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* @length: Length of this capability
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*/
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struct tb_cap_extended_long {
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u8 zero1;
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u8 cap;
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u8 vsec_id;
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u8 zero2;
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u16 next;
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u16 length;
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} __packed;
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/**
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* struct tb_cap_any - Structure capable of hold every capability
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* @basic: Basic capability
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* @extended_short: Vendor specific capability
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* @extended_long: Vendor specific extended capability
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*/
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struct tb_cap_any {
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union {
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struct tb_cap_basic basic;
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struct tb_cap_extended_short extended_short;
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struct tb_cap_extended_long extended_long;
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};
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} __packed;
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/* capabilities */
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struct tb_cap_link_controller {
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struct tb_cap_extended_long cap_header;
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u32 count:4; /* number of link controllers */
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u32 unknown1:4;
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u32 base_offset:8; /*
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* offset (into this capability) of the configuration
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* area of the first link controller
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*/
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u32 length:12; /* link controller configuration area length */
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u32 unknown2:4; /* TODO check that length is correct */
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} __packed;
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struct tb_cap_phy {
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struct tb_cap_basic cap_header;
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u32 unknown1:16;
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u32 unknown2:14;
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bool disable:1;
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u32 unknown3:11;
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enum tb_port_state state:4;
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u32 unknown4:2;
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} __packed;
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struct tb_eeprom_ctl {
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bool clock:1; /* send pulse to transfer one bit */
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bool access_low:1; /* set to 0 before access */
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bool data_out:1; /* to eeprom */
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bool data_in:1; /* from eeprom */
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bool access_high:1; /* set to 1 before access */
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bool not_present:1; /* should be 0 */
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bool unknown1:1;
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bool present:1; /* should be 1 */
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u32 unknown2:24;
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} __packed;
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struct tb_cap_plug_events {
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struct tb_cap_extended_short cap_header;
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u32 __unknown1:2;
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u32 plug_events:5;
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u32 __unknown2:25;
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u32 __unknown3;
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u32 __unknown4;
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struct tb_eeprom_ctl eeprom_ctl;
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u32 __unknown5[7];
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u32 drom_offset; /* 32 bit register, but eeprom addresses are 16 bit */
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} __packed;
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/* device headers */
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/* Present on port 0 in TB_CFG_SWITCH at address zero. */
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struct tb_regs_switch_header {
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/* DWORD 0 */
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u16 vendor_id;
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u16 device_id;
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/* DWORD 1 */
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u32 first_cap_offset:8;
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u32 upstream_port_number:6;
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u32 max_port_number:6;
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u32 depth:3;
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u32 __unknown1:1;
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u32 revision:8;
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/* DWORD 2 */
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u32 route_lo;
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/* DWORD 3 */
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u32 route_hi:31;
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bool enabled:1;
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/* DWORD 4 */
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u32 plug_events_delay:8; /*
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* RW, pause between plug events in
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* milliseconds. Writing 0x00 is interpreted
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* as 255ms.
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*/
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u32 cmuv:8;
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u32 __unknown4:8;
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u32 thunderbolt_version:8;
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} __packed;
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/* USB4 version 1.0 */
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#define USB4_VERSION_1_0 0x20
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#define ROUTER_CS_1 0x01
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#define ROUTER_CS_4 0x04
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#define ROUTER_CS_5 0x05
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#define ROUTER_CS_5_SLP BIT(0)
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#define ROUTER_CS_5_WOP BIT(1)
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#define ROUTER_CS_5_WOU BIT(2)
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#define ROUTER_CS_5_WOD BIT(3)
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#define ROUTER_CS_5_C3S BIT(23)
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#define ROUTER_CS_5_PTO BIT(24)
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#define ROUTER_CS_5_UTO BIT(25)
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#define ROUTER_CS_5_HCO BIT(26)
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#define ROUTER_CS_5_CV BIT(31)
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#define ROUTER_CS_6 0x06
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#define ROUTER_CS_6_SLPR BIT(0)
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#define ROUTER_CS_6_TNS BIT(1)
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#define ROUTER_CS_6_WOPS BIT(2)
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#define ROUTER_CS_6_WOUS BIT(3)
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#define ROUTER_CS_6_HCI BIT(18)
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#define ROUTER_CS_6_CR BIT(25)
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#define ROUTER_CS_7 0x07
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#define ROUTER_CS_9 0x09
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#define ROUTER_CS_25 0x19
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#define ROUTER_CS_26 0x1a
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#define ROUTER_CS_26_OPCODE_MASK GENMASK(15, 0)
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#define ROUTER_CS_26_STATUS_MASK GENMASK(29, 24)
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#define ROUTER_CS_26_STATUS_SHIFT 24
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#define ROUTER_CS_26_ONS BIT(30)
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#define ROUTER_CS_26_OV BIT(31)
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/* USB4 router operations opcodes */
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enum usb4_switch_op {
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USB4_SWITCH_OP_QUERY_DP_RESOURCE = 0x10,
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USB4_SWITCH_OP_ALLOC_DP_RESOURCE = 0x11,
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USB4_SWITCH_OP_DEALLOC_DP_RESOURCE = 0x12,
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USB4_SWITCH_OP_NVM_WRITE = 0x20,
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USB4_SWITCH_OP_NVM_AUTH = 0x21,
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USB4_SWITCH_OP_NVM_READ = 0x22,
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USB4_SWITCH_OP_NVM_SET_OFFSET = 0x23,
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USB4_SWITCH_OP_DROM_READ = 0x24,
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USB4_SWITCH_OP_NVM_SECTOR_SIZE = 0x25,
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USB4_SWITCH_OP_BUFFER_ALLOC = 0x33,
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};
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/* Router TMU configuration */
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#define TMU_RTR_CS_0 0x00
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#define TMU_RTR_CS_0_TD BIT(27)
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#define TMU_RTR_CS_0_UCAP BIT(30)
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#define TMU_RTR_CS_1 0x01
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#define TMU_RTR_CS_1_LOCAL_TIME_NS_MASK GENMASK(31, 16)
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#define TMU_RTR_CS_1_LOCAL_TIME_NS_SHIFT 16
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#define TMU_RTR_CS_2 0x02
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#define TMU_RTR_CS_3 0x03
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#define TMU_RTR_CS_3_LOCAL_TIME_NS_MASK GENMASK(15, 0)
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#define TMU_RTR_CS_3_TS_PACKET_INTERVAL_MASK GENMASK(31, 16)
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#define TMU_RTR_CS_3_TS_PACKET_INTERVAL_SHIFT 16
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#define TMU_RTR_CS_22 0x16
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#define TMU_RTR_CS_24 0x18
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#define TMU_RTR_CS_25 0x19
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enum tb_port_type {
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TB_TYPE_INACTIVE = 0x000000,
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TB_TYPE_PORT = 0x000001,
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TB_TYPE_NHI = 0x000002,
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/* TB_TYPE_ETHERNET = 0x020000, lower order bits are not known */
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/* TB_TYPE_SATA = 0x080000, lower order bits are not known */
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TB_TYPE_DP_HDMI_IN = 0x0e0101,
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TB_TYPE_DP_HDMI_OUT = 0x0e0102,
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TB_TYPE_PCIE_DOWN = 0x100101,
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TB_TYPE_PCIE_UP = 0x100102,
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TB_TYPE_USB3_DOWN = 0x200101,
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TB_TYPE_USB3_UP = 0x200102,
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};
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/* Present on every port in TB_CF_PORT at address zero. */
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struct tb_regs_port_header {
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/* DWORD 0 */
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u16 vendor_id;
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u16 device_id;
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/* DWORD 1 */
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u32 first_cap_offset:8;
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u32 max_counters:11;
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u32 counters_support:1;
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u32 __unknown1:4;
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u32 revision:8;
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/* DWORD 2 */
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enum tb_port_type type:24;
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u32 thunderbolt_version:8;
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/* DWORD 3 */
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u32 __unknown2:20;
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u32 port_number:6;
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u32 __unknown3:6;
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/* DWORD 4 */
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u32 nfc_credits;
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/* DWORD 5 */
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u32 max_in_hop_id:11;
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u32 max_out_hop_id:11;
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u32 __unknown4:10;
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/* DWORD 6 */
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u32 __unknown5;
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/* DWORD 7 */
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u32 __unknown6;
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} __packed;
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/* Basic adapter configuration registers */
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#define ADP_CS_4 0x04
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#define ADP_CS_4_NFC_BUFFERS_MASK GENMASK(9, 0)
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#define ADP_CS_4_TOTAL_BUFFERS_MASK GENMASK(29, 20)
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#define ADP_CS_4_TOTAL_BUFFERS_SHIFT 20
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#define ADP_CS_4_LCK BIT(31)
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#define ADP_CS_5 0x05
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#define ADP_CS_5_LCA_MASK GENMASK(28, 22)
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#define ADP_CS_5_LCA_SHIFT 22
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/* TMU adapter registers */
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#define TMU_ADP_CS_3 0x03
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#define TMU_ADP_CS_3_UDM BIT(29)
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#define TMU_ADP_CS_6 0x06
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#define TMU_ADP_CS_6_DTS BIT(1)
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/* Lane adapter registers */
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#define LANE_ADP_CS_0 0x00
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#define LANE_ADP_CS_0_SUPPORTED_WIDTH_MASK GENMASK(25, 20)
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#define LANE_ADP_CS_0_SUPPORTED_WIDTH_SHIFT 20
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#define LANE_ADP_CS_1 0x01
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#define LANE_ADP_CS_1_TARGET_WIDTH_MASK GENMASK(9, 4)
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#define LANE_ADP_CS_1_TARGET_WIDTH_SHIFT 4
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#define LANE_ADP_CS_1_TARGET_WIDTH_SINGLE 0x1
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#define LANE_ADP_CS_1_TARGET_WIDTH_DUAL 0x3
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#define LANE_ADP_CS_1_LD BIT(14)
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#define LANE_ADP_CS_1_LB BIT(15)
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#define LANE_ADP_CS_1_CURRENT_SPEED_MASK GENMASK(19, 16)
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#define LANE_ADP_CS_1_CURRENT_SPEED_SHIFT 16
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#define LANE_ADP_CS_1_CURRENT_SPEED_GEN2 0x8
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#define LANE_ADP_CS_1_CURRENT_SPEED_GEN3 0x4
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#define LANE_ADP_CS_1_CURRENT_WIDTH_MASK GENMASK(25, 20)
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#define LANE_ADP_CS_1_CURRENT_WIDTH_SHIFT 20
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/* USB4 port registers */
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#define PORT_CS_1 0x01
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#define PORT_CS_1_LENGTH_SHIFT 8
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#define PORT_CS_1_TARGET_MASK GENMASK(18, 16)
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#define PORT_CS_1_TARGET_SHIFT 16
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#define PORT_CS_1_RETIMER_INDEX_SHIFT 20
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#define PORT_CS_1_WNR_WRITE BIT(24)
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#define PORT_CS_1_NR BIT(25)
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#define PORT_CS_1_RC BIT(26)
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#define PORT_CS_1_PND BIT(31)
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#define PORT_CS_2 0x02
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#define PORT_CS_18 0x12
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#define PORT_CS_18_BE BIT(8)
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#define PORT_CS_18_TCM BIT(9)
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#define PORT_CS_18_WOU4S BIT(18)
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#define PORT_CS_19 0x13
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#define PORT_CS_19_PC BIT(3)
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#define PORT_CS_19_PID BIT(4)
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#define PORT_CS_19_WOC BIT(16)
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#define PORT_CS_19_WOD BIT(17)
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#define PORT_CS_19_WOU4 BIT(18)
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/* Display Port adapter registers */
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#define ADP_DP_CS_0 0x00
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#define ADP_DP_CS_0_VIDEO_HOPID_MASK GENMASK(26, 16)
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#define ADP_DP_CS_0_VIDEO_HOPID_SHIFT 16
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#define ADP_DP_CS_0_AE BIT(30)
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#define ADP_DP_CS_0_VE BIT(31)
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#define ADP_DP_CS_1_AUX_TX_HOPID_MASK GENMASK(10, 0)
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#define ADP_DP_CS_1_AUX_RX_HOPID_MASK GENMASK(21, 11)
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#define ADP_DP_CS_1_AUX_RX_HOPID_SHIFT 11
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#define ADP_DP_CS_2 0x02
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#define ADP_DP_CS_2_HDP BIT(6)
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#define ADP_DP_CS_3 0x03
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#define ADP_DP_CS_3_HDPC BIT(9)
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#define DP_LOCAL_CAP 0x04
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#define DP_REMOTE_CAP 0x05
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#define DP_STATUS_CTRL 0x06
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#define DP_STATUS_CTRL_CMHS BIT(25)
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#define DP_STATUS_CTRL_UF BIT(26)
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#define DP_COMMON_CAP 0x07
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/*
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* DP_COMMON_CAP offsets work also for DP_LOCAL_CAP and DP_REMOTE_CAP
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* with exception of DPRX done.
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*/
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#define DP_COMMON_CAP_RATE_MASK GENMASK(11, 8)
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#define DP_COMMON_CAP_RATE_SHIFT 8
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#define DP_COMMON_CAP_RATE_RBR 0x0
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#define DP_COMMON_CAP_RATE_HBR 0x1
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#define DP_COMMON_CAP_RATE_HBR2 0x2
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#define DP_COMMON_CAP_RATE_HBR3 0x3
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#define DP_COMMON_CAP_LANES_MASK GENMASK(14, 12)
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#define DP_COMMON_CAP_LANES_SHIFT 12
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#define DP_COMMON_CAP_1_LANE 0x0
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#define DP_COMMON_CAP_2_LANES 0x1
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#define DP_COMMON_CAP_4_LANES 0x2
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#define DP_COMMON_CAP_DPRX_DONE BIT(31)
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/* PCIe adapter registers */
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#define ADP_PCIE_CS_0 0x00
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#define ADP_PCIE_CS_0_PE BIT(31)
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/* USB adapter registers */
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#define ADP_USB3_CS_0 0x00
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#define ADP_USB3_CS_0_V BIT(30)
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#define ADP_USB3_CS_0_PE BIT(31)
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#define ADP_USB3_CS_1 0x01
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#define ADP_USB3_CS_1_CUBW_MASK GENMASK(11, 0)
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#define ADP_USB3_CS_1_CDBW_MASK GENMASK(23, 12)
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#define ADP_USB3_CS_1_CDBW_SHIFT 12
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#define ADP_USB3_CS_1_HCA BIT(31)
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#define ADP_USB3_CS_2 0x02
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#define ADP_USB3_CS_2_AUBW_MASK GENMASK(11, 0)
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#define ADP_USB3_CS_2_ADBW_MASK GENMASK(23, 12)
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#define ADP_USB3_CS_2_ADBW_SHIFT 12
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#define ADP_USB3_CS_2_CMR BIT(31)
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#define ADP_USB3_CS_3 0x03
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#define ADP_USB3_CS_3_SCALE_MASK GENMASK(5, 0)
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#define ADP_USB3_CS_4 0x04
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#define ADP_USB3_CS_4_ALR_MASK GENMASK(6, 0)
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#define ADP_USB3_CS_4_ALR_20G 0x1
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#define ADP_USB3_CS_4_ULV BIT(7)
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#define ADP_USB3_CS_4_MSLR_MASK GENMASK(18, 12)
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#define ADP_USB3_CS_4_MSLR_SHIFT 12
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#define ADP_USB3_CS_4_MSLR_20G 0x1
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/* Hop register from TB_CFG_HOPS. 8 byte per entry. */
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struct tb_regs_hop {
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/* DWORD 0 */
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u32 next_hop:11; /*
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* hop to take after sending the packet through
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* out_port (on the incoming port of the next switch)
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*/
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u32 out_port:6; /* next port of the path (on the same switch) */
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u32 initial_credits:8;
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u32 unknown1:6; /* set to zero */
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bool enable:1;
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/* DWORD 1 */
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u32 weight:4;
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u32 unknown2:4; /* set to zero */
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u32 priority:3;
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bool drop_packages:1;
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u32 counter:11; /* index into TB_CFG_COUNTERS on this port */
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bool counter_enable:1;
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bool ingress_fc:1;
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bool egress_fc:1;
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bool ingress_shared_buffer:1;
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bool egress_shared_buffer:1;
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bool pending:1;
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u32 unknown3:3; /* set to zero */
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} __packed;
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/* Common link controller registers */
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#define TB_LC_DESC 0x02
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#define TB_LC_DESC_NLC_MASK GENMASK(3, 0)
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#define TB_LC_DESC_SIZE_SHIFT 8
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#define TB_LC_DESC_SIZE_MASK GENMASK(15, 8)
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#define TB_LC_DESC_PORT_SIZE_SHIFT 16
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#define TB_LC_DESC_PORT_SIZE_MASK GENMASK(27, 16)
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#define TB_LC_FUSE 0x03
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#define TB_LC_SNK_ALLOCATION 0x10
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#define TB_LC_SNK_ALLOCATION_SNK0_MASK GENMASK(3, 0)
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#define TB_LC_SNK_ALLOCATION_SNK0_CM 0x1
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#define TB_LC_SNK_ALLOCATION_SNK1_SHIFT 4
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#define TB_LC_SNK_ALLOCATION_SNK1_MASK GENMASK(7, 4)
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#define TB_LC_SNK_ALLOCATION_SNK1_CM 0x1
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#define TB_LC_POWER 0x740
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|
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/* Link controller registers */
|
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#define TB_LC_PORT_ATTR 0x8d
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#define TB_LC_PORT_ATTR_BE BIT(12)
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|
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#define TB_LC_SX_CTRL 0x96
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#define TB_LC_SX_CTRL_WOC BIT(1)
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#define TB_LC_SX_CTRL_WOD BIT(2)
|
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#define TB_LC_SX_CTRL_WODPC BIT(3)
|
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#define TB_LC_SX_CTRL_WODPD BIT(4)
|
|
#define TB_LC_SX_CTRL_WOU4 BIT(5)
|
|
#define TB_LC_SX_CTRL_WOP BIT(6)
|
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#define TB_LC_SX_CTRL_L1C BIT(16)
|
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#define TB_LC_SX_CTRL_L1D BIT(17)
|
|
#define TB_LC_SX_CTRL_L2C BIT(20)
|
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#define TB_LC_SX_CTRL_L2D BIT(21)
|
|
#define TB_LC_SX_CTRL_SLI BIT(29)
|
|
#define TB_LC_SX_CTRL_UPSTREAM BIT(30)
|
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#define TB_LC_SX_CTRL_SLP BIT(31)
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#endif
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