| Mika Westerberg | 32af943 | 2017-06-06 15:25:06 +0300 | [diff] [blame^] | 1 | /* |
| 2 | * Thunderbolt control channel messages |
| 3 | * |
| 4 | * Copyright (C) 2014 Andreas Noever <andreas.noever@gmail.com> |
| 5 | * Copyright (C) 2017, Intel Corporation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #ifndef _TB_MSGS |
| 13 | #define _TB_MSGS |
| 14 | |
| 15 | #include <linux/types.h> |
| 16 | |
| 17 | enum tb_cfg_pkg_type { |
| 18 | TB_CFG_PKG_READ = 1, |
| 19 | TB_CFG_PKG_WRITE = 2, |
| 20 | TB_CFG_PKG_ERROR = 3, |
| 21 | TB_CFG_PKG_NOTIFY_ACK = 4, |
| 22 | TB_CFG_PKG_EVENT = 5, |
| 23 | TB_CFG_PKG_XDOMAIN_REQ = 6, |
| 24 | TB_CFG_PKG_XDOMAIN_RESP = 7, |
| 25 | TB_CFG_PKG_OVERRIDE = 8, |
| 26 | TB_CFG_PKG_RESET = 9, |
| 27 | TB_CFG_PKG_PREPARE_TO_SLEEP = 0xd, |
| 28 | |
| 29 | }; |
| 30 | |
| 31 | enum tb_cfg_space { |
| 32 | TB_CFG_HOPS = 0, |
| 33 | TB_CFG_PORT = 1, |
| 34 | TB_CFG_SWITCH = 2, |
| 35 | TB_CFG_COUNTERS = 3, |
| 36 | }; |
| 37 | |
| 38 | enum tb_cfg_error { |
| 39 | TB_CFG_ERROR_PORT_NOT_CONNECTED = 0, |
| 40 | TB_CFG_ERROR_LINK_ERROR = 1, |
| 41 | TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2, |
| 42 | TB_CFG_ERROR_NO_SUCH_PORT = 4, |
| 43 | TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */ |
| 44 | TB_CFG_ERROR_LOOP = 8, |
| 45 | TB_CFG_ERROR_HEC_ERROR_DETECTED = 12, |
| 46 | TB_CFG_ERROR_FLOW_CONTROL_ERROR = 13, |
| 47 | }; |
| 48 | |
| 49 | /* common header */ |
| 50 | struct tb_cfg_header { |
| 51 | u32 route_hi:22; |
| 52 | u32 unknown:10; /* highest order bit is set on replies */ |
| 53 | u32 route_lo; |
| 54 | } __packed; |
| 55 | |
| 56 | /* additional header for read/write packets */ |
| 57 | struct tb_cfg_address { |
| 58 | u32 offset:13; /* in dwords */ |
| 59 | u32 length:6; /* in dwords */ |
| 60 | u32 port:6; |
| 61 | enum tb_cfg_space space:2; |
| 62 | u32 seq:2; /* sequence number */ |
| 63 | u32 zero:3; |
| 64 | } __packed; |
| 65 | |
| 66 | /* TB_CFG_PKG_READ, response for TB_CFG_PKG_WRITE */ |
| 67 | struct cfg_read_pkg { |
| 68 | struct tb_cfg_header header; |
| 69 | struct tb_cfg_address addr; |
| 70 | } __packed; |
| 71 | |
| 72 | /* TB_CFG_PKG_WRITE, response for TB_CFG_PKG_READ */ |
| 73 | struct cfg_write_pkg { |
| 74 | struct tb_cfg_header header; |
| 75 | struct tb_cfg_address addr; |
| 76 | u32 data[64]; /* maximum size, tb_cfg_address.length has 6 bits */ |
| 77 | } __packed; |
| 78 | |
| 79 | /* TB_CFG_PKG_ERROR */ |
| 80 | struct cfg_error_pkg { |
| 81 | struct tb_cfg_header header; |
| 82 | enum tb_cfg_error error:4; |
| 83 | u32 zero1:4; |
| 84 | u32 port:6; |
| 85 | u32 zero2:2; /* Both should be zero, still they are different fields. */ |
| 86 | u32 zero3:16; |
| 87 | } __packed; |
| 88 | |
| 89 | /* TB_CFG_PKG_EVENT */ |
| 90 | struct cfg_event_pkg { |
| 91 | struct tb_cfg_header header; |
| 92 | u32 port:6; |
| 93 | u32 zero:25; |
| 94 | bool unplug:1; |
| 95 | } __packed; |
| 96 | |
| 97 | /* TB_CFG_PKG_RESET */ |
| 98 | struct cfg_reset_pkg { |
| 99 | struct tb_cfg_header header; |
| 100 | } __packed; |
| 101 | |
| 102 | /* TB_CFG_PKG_PREPARE_TO_SLEEP */ |
| 103 | struct cfg_pts_pkg { |
| 104 | struct tb_cfg_header header; |
| 105 | u32 data; |
| 106 | } __packed; |
| 107 | |
| 108 | #endif |