109 lines
2.4 KiB
C
109 lines
2.4 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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enum tb_cfg_pkg_type {
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TB_CFG_PKG_READ = 1,
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TB_CFG_PKG_WRITE = 2,
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TB_CFG_PKG_ERROR = 3,
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TB_CFG_PKG_NOTIFY_ACK = 4,
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TB_CFG_PKG_EVENT = 5,
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TB_CFG_PKG_XDOMAIN_REQ = 6,
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TB_CFG_PKG_XDOMAIN_RESP = 7,
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TB_CFG_PKG_OVERRIDE = 8,
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TB_CFG_PKG_RESET = 9,
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TB_CFG_PKG_PREPARE_TO_SLEEP = 0xd,
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};
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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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#endif
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