diff options
Diffstat (limited to 'drivers/thunderbolt/tb_msgs.h')
| -rw-r--r-- | drivers/thunderbolt/tb_msgs.h | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb_msgs.h b/drivers/thunderbolt/tb_msgs.h new file mode 100644 index 000000000000..85b6d33c0919 --- /dev/null +++ b/drivers/thunderbolt/tb_msgs.h @@ -0,0 +1,260 @@ +/* + * Thunderbolt control channel messages + * + * Copyright (C) 2014 Andreas Noever <andreas.noever@gmail.com> + * 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 <linux/types.h> +#include <linux/uuid.h> + +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_ICM_EVENT = 10, + TB_CFG_PKG_ICM_CMD = 11, + TB_CFG_PKG_ICM_RESP = 12, + 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; + +/* ICM messages */ + +enum icm_pkg_code { + ICM_GET_TOPOLOGY = 0x1, + ICM_DRIVER_READY = 0x3, + ICM_APPROVE_DEVICE = 0x4, + ICM_CHALLENGE_DEVICE = 0x5, + ICM_ADD_DEVICE_KEY = 0x6, + ICM_GET_ROUTE = 0xa, +}; + +enum icm_event_code { + ICM_EVENT_DEVICE_CONNECTED = 3, + ICM_EVENT_DEVICE_DISCONNECTED = 4, +}; + +struct icm_pkg_header { + u8 code; + u8 flags; + u8 packet_id; + u8 total_packets; +} __packed; + +#define ICM_FLAGS_ERROR BIT(0) +#define ICM_FLAGS_NO_KEY BIT(1) +#define ICM_FLAGS_SLEVEL_SHIFT 3 +#define ICM_FLAGS_SLEVEL_MASK GENMASK(4, 3) + +struct icm_pkg_driver_ready { + struct icm_pkg_header hdr; +} __packed; + +struct icm_pkg_driver_ready_response { + struct icm_pkg_header hdr; + u8 romver; + u8 ramver; + u16 security_level; +} __packed; + +/* Falcon Ridge & Alpine Ridge common messages */ + +struct icm_fr_pkg_get_topology { + struct icm_pkg_header hdr; +} __packed; + +#define ICM_GET_TOPOLOGY_PACKETS 14 + +struct icm_fr_pkg_get_topology_response { + struct icm_pkg_header hdr; + u32 route_lo; + u32 route_hi; + u8 first_data; + u8 second_data; + u8 drom_i2c_address_index; + u8 switch_index; + u32 reserved[2]; + u32 ports[16]; + u32 port_hop_info[16]; +} __packed; + +#define ICM_SWITCH_USED BIT(0) +#define ICM_SWITCH_UPSTREAM_PORT_MASK GENMASK(7, 1) +#define ICM_SWITCH_UPSTREAM_PORT_SHIFT 1 + +#define ICM_PORT_TYPE_MASK GENMASK(23, 0) +#define ICM_PORT_INDEX_SHIFT 24 +#define ICM_PORT_INDEX_MASK GENMASK(31, 24) + +struct icm_fr_event_device_connected { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 link_info; + u32 ep_name[55]; +} __packed; + +#define ICM_LINK_INFO_LINK_MASK 0x7 +#define ICM_LINK_INFO_DEPTH_SHIFT 4 +#define ICM_LINK_INFO_DEPTH_MASK GENMASK(7, 4) +#define ICM_LINK_INFO_APPROVED BIT(8) + +struct icm_fr_pkg_approve_device { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 reserved; +} __packed; + +struct icm_fr_event_device_disconnected { + struct icm_pkg_header hdr; + u16 reserved; + u16 link_info; +} __packed; + +struct icm_fr_pkg_add_device_key { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 reserved; + u32 key[8]; +} __packed; + +struct icm_fr_pkg_add_device_key_response { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 reserved; +} __packed; + +struct icm_fr_pkg_challenge_device { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 reserved; + u32 challenge[8]; +} __packed; + +struct icm_fr_pkg_challenge_device_response { + struct icm_pkg_header hdr; + uuid_be ep_uuid; + u8 connection_key; + u8 connection_id; + u16 reserved; + u32 challenge[8]; + u32 response[8]; +} __packed; + +/* Alpine Ridge only messages */ + +struct icm_ar_pkg_get_route { + struct icm_pkg_header hdr; + u16 reserved; + u16 link_info; +} __packed; + +struct icm_ar_pkg_get_route_response { + struct icm_pkg_header hdr; + u16 reserved; + u16 link_info; + u32 route_hi; + u32 route_lo; +} __packed; + +#endif |