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kernel_optimize_test/drivers/thunderbolt/tb_msgs.h
Mika Westerberg 2d8ff0b586 thunderbolt: Add support for runtime PM 
When Thunderbolt host controller is set to RTD3 mode (Runtime D3) it is
present all the time. Because of this it is important to runtime suspend
the controller whenever possible. In case of ICM we have following rules
which all needs to be true before the host controller can be put to D3:

  - The controller firmware reports to support RTD3
  - All the connected devices announce support for RTD3
  - There is no active XDomain connection

Implement this using standard Linux runtime PM APIs so that when all the
children devices are runtime suspended, the Thunderbolt host controller
PCI device is runtime suspended as well. The ICM firmware then starts
powering down power domains towards RTD3 but it can prevent this if it
detects that there is an active Display Port stream (this is not visible
to the software, though).

The Thunderbolt host controller will be runtime resumed either when
there is a remote wake event (device is connected or disconnected), or
when there is access from userspace that requires hardware access.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-25 10:55:29 +02:00

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/*
* 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_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,
ICM_APPROVE_XDOMAIN = 0x10,
ICM_DISCONNECT_XDOMAIN = 0x11,
ICM_PREBOOT_ACL = 0x18,
};
enum icm_event_code {
ICM_EVENT_DEVICE_CONNECTED = 3,
ICM_EVENT_DEVICE_DISCONNECTED = 4,
ICM_EVENT_XDOMAIN_CONNECTED = 6,
ICM_EVENT_XDOMAIN_DISCONNECTED = 7,
};
struct icm_pkg_header {
u8 code;
u8 flags;
u8 packet_id;
u8 total_packets;
};
#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)
#define ICM_FLAGS_WRITE BIT(7)
struct icm_pkg_driver_ready {
struct icm_pkg_header hdr;
};
/* Falcon Ridge only messages */
struct icm_fr_pkg_driver_ready_response {
struct icm_pkg_header hdr;
u8 romver;
u8 ramver;
u16 security_level;
};
#define ICM_FR_SLEVEL_MASK 0xf
/* Falcon Ridge & Alpine Ridge common messages */
struct icm_fr_pkg_get_topology {
struct icm_pkg_header hdr;
};
#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];
};
#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_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 link_info;
u32 ep_name[55];
};
#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)
#define ICM_LINK_INFO_REJECTED BIT(9)
#define ICM_LINK_INFO_BOOT BIT(10)
struct icm_fr_pkg_approve_device {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 reserved;
};
struct icm_fr_event_device_disconnected {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
};
struct icm_fr_event_xdomain_connected {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
uuid_t remote_uuid;
uuid_t local_uuid;
u32 local_route_hi;
u32 local_route_lo;
u32 remote_route_hi;
u32 remote_route_lo;
};
struct icm_fr_event_xdomain_disconnected {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
uuid_t remote_uuid;
};
struct icm_fr_pkg_add_device_key {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 reserved;
u32 key[8];
};
struct icm_fr_pkg_add_device_key_response {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 reserved;
};
struct icm_fr_pkg_challenge_device {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 reserved;
u32 challenge[8];
};
struct icm_fr_pkg_challenge_device_response {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u8 connection_key;
u8 connection_id;
u16 reserved;
u32 challenge[8];
u32 response[8];
};
struct icm_fr_pkg_approve_xdomain {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
uuid_t remote_uuid;
u16 transmit_path;
u16 transmit_ring;
u16 receive_path;
u16 receive_ring;
};
struct icm_fr_pkg_approve_xdomain_response {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
uuid_t remote_uuid;
u16 transmit_path;
u16 transmit_ring;
u16 receive_path;
u16 receive_ring;
};
/* Alpine Ridge only messages */
struct icm_ar_pkg_driver_ready_response {
struct icm_pkg_header hdr;
u8 romver;
u8 ramver;
u16 info;
};
#define ICM_AR_FLAGS_RTD3 BIT(6)
#define ICM_AR_INFO_SLEVEL_MASK GENMASK(3, 0)
#define ICM_AR_INFO_BOOT_ACL_SHIFT 7
#define ICM_AR_INFO_BOOT_ACL_MASK GENMASK(11, 7)
#define ICM_AR_INFO_BOOT_ACL_SUPPORTED BIT(13)
struct icm_ar_pkg_get_route {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
};
struct icm_ar_pkg_get_route_response {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
u32 route_hi;
u32 route_lo;
};
struct icm_ar_boot_acl_entry {
u32 uuid_lo;
u32 uuid_hi;
};
#define ICM_AR_PREBOOT_ACL_ENTRIES 16
struct icm_ar_pkg_preboot_acl {
struct icm_pkg_header hdr;
struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
};
struct icm_ar_pkg_preboot_acl_response {
struct icm_pkg_header hdr;
struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
};
/* Titan Ridge messages */
struct icm_tr_pkg_driver_ready_response {
struct icm_pkg_header hdr;
u16 reserved1;
u16 info;
u32 nvm_version;
u16 device_id;
u16 reserved2;
};
#define ICM_TR_FLAGS_RTD3 BIT(6)
#define ICM_TR_INFO_SLEVEL_MASK GENMASK(2, 0)
#define ICM_TR_INFO_BOOT_ACL_SHIFT 7
#define ICM_TR_INFO_BOOT_ACL_MASK GENMASK(12, 7)
struct icm_tr_event_device_connected {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved;
u16 link_info;
u32 ep_name[55];
};
struct icm_tr_event_device_disconnected {
struct icm_pkg_header hdr;
u32 route_hi;
u32 route_lo;
};
struct icm_tr_event_xdomain_connected {
struct icm_pkg_header hdr;
u16 reserved;
u16 link_info;
uuid_t remote_uuid;
uuid_t local_uuid;
u32 local_route_hi;
u32 local_route_lo;
u32 remote_route_hi;
u32 remote_route_lo;
};
struct icm_tr_event_xdomain_disconnected {
struct icm_pkg_header hdr;
u32 route_hi;
u32 route_lo;
uuid_t remote_uuid;
};
struct icm_tr_pkg_approve_device {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved1[3];
};
struct icm_tr_pkg_add_device_key {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved[3];
u32 key[8];
};
struct icm_tr_pkg_challenge_device {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved[3];
u32 challenge[8];
};
struct icm_tr_pkg_approve_xdomain {
struct icm_pkg_header hdr;
u32 route_hi;
u32 route_lo;
uuid_t remote_uuid;
u16 transmit_path;
u16 transmit_ring;
u16 receive_path;
u16 receive_ring;
};
struct icm_tr_pkg_disconnect_xdomain {
struct icm_pkg_header hdr;
u8 stage;
u8 reserved[3];
u32 route_hi;
u32 route_lo;
uuid_t remote_uuid;
};
struct icm_tr_pkg_challenge_device_response {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved[3];
u32 challenge[8];
u32 response[8];
};
struct icm_tr_pkg_add_device_key_response {
struct icm_pkg_header hdr;
uuid_t ep_uuid;
u32 route_hi;
u32 route_lo;
u8 connection_id;
u8 reserved[3];
};
struct icm_tr_pkg_approve_xdomain_response {
struct icm_pkg_header hdr;
u32 route_hi;
u32 route_lo;
uuid_t remote_uuid;
u16 transmit_path;
u16 transmit_ring;
u16 receive_path;
u16 receive_ring;
};
struct icm_tr_pkg_disconnect_xdomain_response {
struct icm_pkg_header hdr;
u8 stage;
u8 reserved[3];
u32 route_hi;
u32 route_lo;
uuid_t remote_uuid;
};
/* XDomain messages */
struct tb_xdomain_header {
u32 route_hi;
u32 route_lo;
u32 length_sn;
};
#define TB_XDOMAIN_LENGTH_MASK GENMASK(5, 0)
#define TB_XDOMAIN_SN_MASK GENMASK(28, 27)
#define TB_XDOMAIN_SN_SHIFT 27
enum tb_xdp_type {
UUID_REQUEST_OLD = 1,
UUID_RESPONSE = 2,
PROPERTIES_REQUEST,
PROPERTIES_RESPONSE,
PROPERTIES_CHANGED_REQUEST,
PROPERTIES_CHANGED_RESPONSE,
ERROR_RESPONSE,
UUID_REQUEST = 12,
};
struct tb_xdp_header {
struct tb_xdomain_header xd_hdr;
uuid_t uuid;
u32 type;
};
struct tb_xdp_properties {
struct tb_xdp_header hdr;
uuid_t src_uuid;
uuid_t dst_uuid;
u16 offset;
u16 reserved;
};
struct tb_xdp_properties_response {
struct tb_xdp_header hdr;
uuid_t src_uuid;
uuid_t dst_uuid;
u16 offset;
u16 data_length;
u32 generation;
u32 data[0];
};
/*
* Max length of data array single XDomain property response is allowed
* to carry.
*/
#define TB_XDP_PROPERTIES_MAX_DATA_LENGTH \
(((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
/* Maximum size of the total property block in dwords we allow */
#define TB_XDP_PROPERTIES_MAX_LENGTH 500
struct tb_xdp_properties_changed {
struct tb_xdp_header hdr;
uuid_t src_uuid;
};
struct tb_xdp_properties_changed_response {
struct tb_xdp_header hdr;
};
enum tb_xdp_error {
ERROR_SUCCESS,
ERROR_UNKNOWN_PACKET,
ERROR_UNKNOWN_DOMAIN,
ERROR_NOT_SUPPORTED,
ERROR_NOT_READY,
};
struct tb_xdp_error_response {
struct tb_xdp_header hdr;
u32 error;
};
#endif
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