From 32af9434f0b9fd31a68bf5be204667c1e17ddffe Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 6 Jun 2017 15:25:06 +0300 Subject: thunderbolt: Move control channel messages to tb_msgs.h We will be forwarding notifications received from the control channel to the connection manager implementations. This way they can decide what to do if anything when a notification is received. To be able to use control channel messages from other files, move them to tb_msgs.h. No functional changes intended. Signed-off-by: Mika Westerberg Reviewed-by: Yehezkel Bernat Reviewed-by: Michael Jamet Reviewed-by: Andy Shevchenko Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/tb_msgs.h | 108 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 drivers/thunderbolt/tb_msgs.h (limited to 'drivers/thunderbolt/tb_msgs.h') diff --git a/drivers/thunderbolt/tb_msgs.h b/drivers/thunderbolt/tb_msgs.h new file mode 100644 index 000000000000..761d56287149 --- /dev/null +++ b/drivers/thunderbolt/tb_msgs.h @@ -0,0 +1,108 @@ +/* + * Thunderbolt control channel messages + * + * Copyright (C) 2014 Andreas Noever + * Copyright (C) 2017, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _TB_MSGS +#define _TB_MSGS + +#include + +enum tb_cfg_pkg_type { + TB_CFG_PKG_READ = 1, + TB_CFG_PKG_WRITE = 2, + TB_CFG_PKG_ERROR = 3, + TB_CFG_PKG_NOTIFY_ACK = 4, + TB_CFG_PKG_EVENT = 5, + TB_CFG_PKG_XDOMAIN_REQ = 6, + TB_CFG_PKG_XDOMAIN_RESP = 7, + TB_CFG_PKG_OVERRIDE = 8, + TB_CFG_PKG_RESET = 9, + TB_CFG_PKG_PREPARE_TO_SLEEP = 0xd, + +}; + +enum tb_cfg_space { + TB_CFG_HOPS = 0, + TB_CFG_PORT = 1, + TB_CFG_SWITCH = 2, + TB_CFG_COUNTERS = 3, +}; + +enum tb_cfg_error { + TB_CFG_ERROR_PORT_NOT_CONNECTED = 0, + TB_CFG_ERROR_LINK_ERROR = 1, + TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2, + TB_CFG_ERROR_NO_SUCH_PORT = 4, + TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */ + TB_CFG_ERROR_LOOP = 8, + TB_CFG_ERROR_HEC_ERROR_DETECTED = 12, + TB_CFG_ERROR_FLOW_CONTROL_ERROR = 13, +}; + +/* common header */ +struct tb_cfg_header { + u32 route_hi:22; + u32 unknown:10; /* highest order bit is set on replies */ + u32 route_lo; +} __packed; + +/* additional header for read/write packets */ +struct tb_cfg_address { + u32 offset:13; /* in dwords */ + u32 length:6; /* in dwords */ + u32 port:6; + enum tb_cfg_space space:2; + u32 seq:2; /* sequence number */ + u32 zero:3; +} __packed; + +/* TB_CFG_PKG_READ, response for TB_CFG_PKG_WRITE */ +struct cfg_read_pkg { + struct tb_cfg_header header; + struct tb_cfg_address addr; +} __packed; + +/* TB_CFG_PKG_WRITE, response for TB_CFG_PKG_READ */ +struct cfg_write_pkg { + struct tb_cfg_header header; + struct tb_cfg_address addr; + u32 data[64]; /* maximum size, tb_cfg_address.length has 6 bits */ +} __packed; + +/* TB_CFG_PKG_ERROR */ +struct cfg_error_pkg { + struct tb_cfg_header header; + enum tb_cfg_error error:4; + u32 zero1:4; + u32 port:6; + u32 zero2:2; /* Both should be zero, still they are different fields. */ + u32 zero3:16; +} __packed; + +/* TB_CFG_PKG_EVENT */ +struct cfg_event_pkg { + struct tb_cfg_header header; + u32 port:6; + u32 zero:25; + bool unplug:1; +} __packed; + +/* TB_CFG_PKG_RESET */ +struct cfg_reset_pkg { + struct tb_cfg_header header; +} __packed; + +/* TB_CFG_PKG_PREPARE_TO_SLEEP */ +struct cfg_pts_pkg { + struct tb_cfg_header header; + u32 data; +} __packed; + +#endif -- cgit v1.2.3