367 lines
7.2 KiB
C
367 lines
7.2 KiB
C
/*
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* Thunderbolt control channel messages
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*
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* Copyright (C) 2014 Andreas Noever <andreas.noever@gmail.com>
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* Copyright (C) 2017, Intel Corporation
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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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#ifndef _TB_MSGS
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#define _TB_MSGS
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#include <linux/types.h>
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#include <linux/uuid.h>
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enum tb_cfg_space {
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TB_CFG_HOPS = 0,
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TB_CFG_PORT = 1,
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TB_CFG_SWITCH = 2,
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TB_CFG_COUNTERS = 3,
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};
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enum tb_cfg_error {
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TB_CFG_ERROR_PORT_NOT_CONNECTED = 0,
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TB_CFG_ERROR_LINK_ERROR = 1,
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TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2,
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TB_CFG_ERROR_NO_SUCH_PORT = 4,
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TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */
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TB_CFG_ERROR_LOOP = 8,
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TB_CFG_ERROR_HEC_ERROR_DETECTED = 12,
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TB_CFG_ERROR_FLOW_CONTROL_ERROR = 13,
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};
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/* common header */
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struct tb_cfg_header {
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u32 route_hi:22;
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u32 unknown:10; /* highest order bit is set on replies */
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u32 route_lo;
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} __packed;
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/* additional header for read/write packets */
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struct tb_cfg_address {
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u32 offset:13; /* in dwords */
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u32 length:6; /* in dwords */
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u32 port:6;
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enum tb_cfg_space space:2;
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u32 seq:2; /* sequence number */
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u32 zero:3;
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} __packed;
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/* TB_CFG_PKG_READ, response for TB_CFG_PKG_WRITE */
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struct cfg_read_pkg {
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struct tb_cfg_header header;
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struct tb_cfg_address addr;
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} __packed;
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/* TB_CFG_PKG_WRITE, response for TB_CFG_PKG_READ */
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struct cfg_write_pkg {
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struct tb_cfg_header header;
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struct tb_cfg_address addr;
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u32 data[64]; /* maximum size, tb_cfg_address.length has 6 bits */
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} __packed;
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/* TB_CFG_PKG_ERROR */
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struct cfg_error_pkg {
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struct tb_cfg_header header;
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enum tb_cfg_error error:4;
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u32 zero1:4;
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u32 port:6;
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u32 zero2:2; /* Both should be zero, still they are different fields. */
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u32 zero3:16;
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} __packed;
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/* TB_CFG_PKG_EVENT */
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struct cfg_event_pkg {
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struct tb_cfg_header header;
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u32 port:6;
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u32 zero:25;
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bool unplug:1;
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} __packed;
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/* TB_CFG_PKG_RESET */
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struct cfg_reset_pkg {
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struct tb_cfg_header header;
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} __packed;
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/* TB_CFG_PKG_PREPARE_TO_SLEEP */
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struct cfg_pts_pkg {
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struct tb_cfg_header header;
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u32 data;
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} __packed;
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/* ICM messages */
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enum icm_pkg_code {
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ICM_GET_TOPOLOGY = 0x1,
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ICM_DRIVER_READY = 0x3,
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ICM_APPROVE_DEVICE = 0x4,
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ICM_CHALLENGE_DEVICE = 0x5,
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ICM_ADD_DEVICE_KEY = 0x6,
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ICM_GET_ROUTE = 0xa,
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ICM_APPROVE_XDOMAIN = 0x10,
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};
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enum icm_event_code {
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ICM_EVENT_DEVICE_CONNECTED = 3,
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ICM_EVENT_DEVICE_DISCONNECTED = 4,
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ICM_EVENT_XDOMAIN_CONNECTED = 6,
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ICM_EVENT_XDOMAIN_DISCONNECTED = 7,
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};
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struct icm_pkg_header {
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u8 code;
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u8 flags;
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u8 packet_id;
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u8 total_packets;
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};
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#define ICM_FLAGS_ERROR BIT(0)
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#define ICM_FLAGS_NO_KEY BIT(1)
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#define ICM_FLAGS_SLEVEL_SHIFT 3
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#define ICM_FLAGS_SLEVEL_MASK GENMASK(4, 3)
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struct icm_pkg_driver_ready {
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struct icm_pkg_header hdr;
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};
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struct icm_pkg_driver_ready_response {
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struct icm_pkg_header hdr;
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u8 romver;
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u8 ramver;
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u16 security_level;
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};
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/* Falcon Ridge & Alpine Ridge common messages */
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struct icm_fr_pkg_get_topology {
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struct icm_pkg_header hdr;
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};
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#define ICM_GET_TOPOLOGY_PACKETS 14
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struct icm_fr_pkg_get_topology_response {
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struct icm_pkg_header hdr;
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u32 route_lo;
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u32 route_hi;
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u8 first_data;
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u8 second_data;
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u8 drom_i2c_address_index;
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u8 switch_index;
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u32 reserved[2];
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u32 ports[16];
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u32 port_hop_info[16];
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};
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#define ICM_SWITCH_USED BIT(0)
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#define ICM_SWITCH_UPSTREAM_PORT_MASK GENMASK(7, 1)
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#define ICM_SWITCH_UPSTREAM_PORT_SHIFT 1
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#define ICM_PORT_TYPE_MASK GENMASK(23, 0)
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#define ICM_PORT_INDEX_SHIFT 24
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#define ICM_PORT_INDEX_MASK GENMASK(31, 24)
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struct icm_fr_event_device_connected {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 link_info;
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u32 ep_name[55];
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};
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#define ICM_LINK_INFO_LINK_MASK 0x7
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#define ICM_LINK_INFO_DEPTH_SHIFT 4
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#define ICM_LINK_INFO_DEPTH_MASK GENMASK(7, 4)
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#define ICM_LINK_INFO_APPROVED BIT(8)
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struct icm_fr_pkg_approve_device {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 reserved;
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};
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struct icm_fr_event_device_disconnected {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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};
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struct icm_fr_event_xdomain_connected {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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uuid_t remote_uuid;
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uuid_t local_uuid;
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u32 local_route_hi;
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u32 local_route_lo;
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u32 remote_route_hi;
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u32 remote_route_lo;
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};
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struct icm_fr_event_xdomain_disconnected {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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uuid_t remote_uuid;
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};
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struct icm_fr_pkg_add_device_key {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 reserved;
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u32 key[8];
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};
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struct icm_fr_pkg_add_device_key_response {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 reserved;
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};
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struct icm_fr_pkg_challenge_device {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 reserved;
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u32 challenge[8];
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};
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struct icm_fr_pkg_challenge_device_response {
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struct icm_pkg_header hdr;
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uuid_t ep_uuid;
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u8 connection_key;
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u8 connection_id;
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u16 reserved;
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u32 challenge[8];
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u32 response[8];
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};
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struct icm_fr_pkg_approve_xdomain {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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uuid_t remote_uuid;
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u16 transmit_path;
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u16 transmit_ring;
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u16 receive_path;
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u16 receive_ring;
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};
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struct icm_fr_pkg_approve_xdomain_response {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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uuid_t remote_uuid;
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u16 transmit_path;
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u16 transmit_ring;
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u16 receive_path;
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u16 receive_ring;
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};
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/* Alpine Ridge only messages */
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struct icm_ar_pkg_get_route {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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};
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struct icm_ar_pkg_get_route_response {
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struct icm_pkg_header hdr;
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u16 reserved;
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u16 link_info;
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u32 route_hi;
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u32 route_lo;
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};
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/* XDomain messages */
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struct tb_xdomain_header {
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u32 route_hi;
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u32 route_lo;
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u32 length_sn;
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};
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#define TB_XDOMAIN_LENGTH_MASK GENMASK(5, 0)
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#define TB_XDOMAIN_SN_MASK GENMASK(28, 27)
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#define TB_XDOMAIN_SN_SHIFT 27
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enum tb_xdp_type {
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UUID_REQUEST_OLD = 1,
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UUID_RESPONSE = 2,
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PROPERTIES_REQUEST,
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PROPERTIES_RESPONSE,
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PROPERTIES_CHANGED_REQUEST,
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PROPERTIES_CHANGED_RESPONSE,
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ERROR_RESPONSE,
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UUID_REQUEST = 12,
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};
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struct tb_xdp_header {
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struct tb_xdomain_header xd_hdr;
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uuid_t uuid;
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u32 type;
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};
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struct tb_xdp_properties {
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struct tb_xdp_header hdr;
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uuid_t src_uuid;
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uuid_t dst_uuid;
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u16 offset;
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u16 reserved;
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};
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struct tb_xdp_properties_response {
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struct tb_xdp_header hdr;
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uuid_t src_uuid;
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uuid_t dst_uuid;
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u16 offset;
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u16 data_length;
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u32 generation;
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u32 data[0];
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};
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/*
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* Max length of data array single XDomain property response is allowed
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* to carry.
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*/
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#define TB_XDP_PROPERTIES_MAX_DATA_LENGTH \
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(((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
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/* Maximum size of the total property block in dwords we allow */
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#define TB_XDP_PROPERTIES_MAX_LENGTH 500
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struct tb_xdp_properties_changed {
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struct tb_xdp_header hdr;
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uuid_t src_uuid;
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};
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struct tb_xdp_properties_changed_response {
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struct tb_xdp_header hdr;
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};
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enum tb_xdp_error {
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ERROR_SUCCESS,
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ERROR_UNKNOWN_PACKET,
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ERROR_UNKNOWN_DOMAIN,
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ERROR_NOT_SUPPORTED,
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ERROR_NOT_READY,
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};
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struct tb_xdp_error_response {
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struct tb_xdp_header hdr;
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u32 error;
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};
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#endif
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