/* SPDX-License-Identifier: GPL-2.0 */
/*
* Thunderbolt driver - bus logic ( NHI independent )
*
* Copyright ( c ) 2014 Andreas Noever < andreas . noever @ gmail . com >
* Copyright ( C ) 2018 , Intel Corporation
*/
#ifndef TB_H_
#define TB_H_
#include <linux/debugfs.h>
#include <linux/nvmem-provider.h>
#include <linux/pci.h>
#include <linux/thunderbolt.h>
#include <linux/uuid.h>
#include <linux/bitfield.h>
#include "tb_regs.h"
#include "ctl.h"
#include "dma_port.h"
/* Keep link controller awake during update */
#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0 )
/* Disable CLx if not supported */
#define QUIRK_NO_CLX BIT(1 )
/* Need to keep power on while USB4 port is in redrive mode */
#define QUIRK_KEEP_POWER_IN_DP_REDRIVE BIT(2 )
/**
* struct tb_nvm - Structure holding NVM information
* @ dev : Owner of the NVM
* @ major : Major version number of the active NVM portion
* @ minor : Minor version number of the active NVM portion
* @ id : Identifier used with both NVM portions
* @ active : Active portion NVMem device
* @ active_size : Size in bytes of the active NVM
* @ non_active : Non - active portion NVMem device
* @ buf : Buffer where the NVM image is stored before it is written to
* the actual NVM flash device
* @ buf_data_start : Where the actual image starts after skipping
* possible headers
* @ buf_data_size : Number of bytes actually consumed by the new NVM
* image
* @ authenticating : The device is authenticating the new NVM
* @ flushed : The image has been flushed to the storage area
* @ vops : Router vendor specific NVM operations ( optional )
*
* The user of this structure needs to handle serialization of possible
* concurrent access .
*/
struct tb_nvm {
struct device *dev;
u32 major;
u32 minor;
int id;
struct nvmem_device *active;
size_t active_size;
struct nvmem_device *non_active;
void *buf;
void *buf_data_start;
size_t buf_data_size;
bool authenticating;
bool flushed;
const struct tb_nvm_vendor_ops *vops;
};
enum tb_nvm_write_ops {
WRITE_AND_AUTHENTICATE = 1 ,
WRITE_ONLY = 2 ,
AUTHENTICATE_ONLY = 3 ,
};
#define TB_SWITCH_KEY_SIZE 32
#define TB_SWITCH_MAX_DEPTH 6
#define USB4_SWITCH_MAX_DEPTH 5
/**
* enum tb_switch_tmu_mode - TMU mode
* @ TB_SWITCH_TMU_MODE_OFF : TMU is off
* @ TB_SWITCH_TMU_MODE_LOWRES : Uni - directional , normal mode
* @ TB_SWITCH_TMU_MODE_HIFI_UNI : Uni - directional , HiFi mode
* @ TB_SWITCH_TMU_MODE_HIFI_BI : Bi - directional , HiFi mode
* @ TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI : Enhanced Uni - directional , MedRes mode
*
* Ordering is based on TMU accuracy level ( highest last ) .
*/
enum tb_switch_tmu_mode {
TB_SWITCH_TMU_MODE_OFF,
TB_SWITCH_TMU_MODE_LOWRES,
TB_SWITCH_TMU_MODE_HIFI_UNI,
TB_SWITCH_TMU_MODE_HIFI_BI,
TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI,
};
/**
* struct tb_switch_tmu - Structure holding router TMU configuration
* @ cap : Offset to the TMU capability ( % 0 if not found )
* @ has_ucap : Does the switch support uni - directional mode
* @ mode : TMU mode related to the upstream router . Reflects the HW
* setting . Don ' t care for host router .
* @ mode_request : TMU mode requested to set . Related to upstream router .
* Don ' t care for host router .
*/
struct tb_switch_tmu {
int cap;
bool has_ucap;
enum tb_switch_tmu_mode mode;
enum tb_switch_tmu_mode mode_request;
};
/**
* struct tb_switch - a thunderbolt switch
* @ dev : Device for the switch
* @ config : Switch configuration
* @ ports : Ports in this switch
* @ dma_port : If the switch has port supporting DMA configuration based
* mailbox this will hold the pointer to that ( % NULL
* otherwise ) . If set it also means the switch has
* upgradeable NVM .
* @ tmu : The switch TMU configuration
* @ tb : Pointer to the domain the switch belongs to
* @ uid : Unique ID of the switch
* @ uuid : UUID of the switch ( or % NULL if not supported )
* @ vendor : Vendor ID of the switch
* @ device : Device ID of the switch
* @ vendor_name : Name of the vendor ( or % NULL if not known )
* @ device_name : Name of the device ( or % NULL if not known )
* @ link_speed : Speed of the link in Gb / s
* @ link_width : Width of the upstream facing link
* @ preferred_link_width : Router preferred link width ( only set for Gen 4 links )
* @ link_usb4 : Upstream link is USB4
* @ generation : Switch Thunderbolt generation
* @ cap_plug_events : Offset to the plug events capability ( % 0 if not found )
* @ cap_vsec_tmu : Offset to the TMU vendor specific capability ( % 0 if not found )
* @ cap_lc : Offset to the link controller capability ( % 0 if not found )
* @ cap_lp : Offset to the low power ( CLx for TBT ) capability ( % 0 if not found )
* @ is_unplugged : The switch is going away
* @ drom : DROM of the switch ( % NULL if not found )
* @ nvm : Pointer to the NVM if the switch has one ( % NULL otherwise )
* @ no_nvm_upgrade : Prevent NVM upgrade of this switch
* @ safe_mode : The switch is in safe - mode
* @ boot : Whether the switch was already authorized on boot or not
* @ rpm : The switch supports runtime PM
* @ authorized : Whether the switch is authorized by user or policy
* @ security_level : Switch supported security level
* @ debugfs_dir : Pointer to the debugfs structure
* @ key : Contains the key used to challenge the device or % NULL if not
* supported . Size of the key is % TB_SWITCH_KEY_SIZE .
* @ connection_id : Connection ID used with ICM messaging
* @ connection_key : Connection key used with ICM messaging
* @ link : Root switch link this switch is connected ( ICM only )
* @ depth : Depth in the chain this switch is connected ( ICM only )
* @ rpm_complete : Completion used to wait for runtime resume to
* complete ( ICM only )
* @ quirks : Quirks used for this Thunderbolt switch
* @ credit_allocation : Are the below buffer allocation parameters valid
* @ max_usb3_credits : Router preferred number of buffers for USB 3 . x
* @ min_dp_aux_credits : Router preferred minimum number of buffers for DP AUX
* @ min_dp_main_credits : Router preferred minimum number of buffers for DP MAIN
* @ max_pcie_credits : Router preferred number of buffers for PCIe
* @ max_dma_credits : Router preferred number of buffers for DMA / P2P
* @ clx : CLx states on the upstream link of the router
* @ drom_blob : DROM debugfs blob wrapper
*
* When the switch is being added or removed to the domain ( other
* switches ) you need to have domain lock held .
*
* In USB4 terminology this structure represents a router .
*/
struct tb_switch {
struct device dev;
struct tb_regs_switch_header config;
struct tb_port *ports;
struct tb_dma_port *dma_port;
struct tb_switch_tmu tmu;
struct tb *tb;
u64 uid;
uuid_t *uuid;
u16 vendor;
u16 device;
const char *vendor_name;
const char *device_name;
unsigned int link_speed;
enum tb_link_width link_width;
enum tb_link_width preferred_link_width;
bool link_usb4;
unsigned int generation;
int cap_plug_events;
int cap_vsec_tmu;
int cap_lc;
int cap_lp;
bool is_unplugged;
u8 *drom;
struct tb_nvm *nvm;
bool no_nvm_upgrade;
bool safe_mode;
bool boot;
bool rpm;
unsigned int authorized;
enum tb_security_level security_level;
struct dentry *debugfs_dir;
u8 *key;
u8 connection_id;
u8 connection_key;
u8 link;
u8 depth;
struct completion rpm_complete;
unsigned long quirks;
bool credit_allocation;
unsigned int max_usb3_credits;
unsigned int min_dp_aux_credits;
unsigned int min_dp_main_credits;
unsigned int max_pcie_credits;
unsigned int max_dma_credits;
unsigned int clx;
#ifdef CONFIG_DEBUG_FS
struct debugfs_blob_wrapper drom_blob;
#endif
};
/**
* struct tb_bandwidth_group - Bandwidth management group
* @ tb : Pointer to the domain the group belongs to
* @ index : Index of the group ( aka Group_ID ) . Valid values % 1 - % 7
* @ ports : DP IN adapters belonging to this group are linked here
* @ reserved : Bandwidth released by one tunnel in the group , available
* to others . This is reported as part of estimated_bw for
* the group .
* @ release_work : Worker to release the @ reserved if it is not used by
* any of the tunnels .
*
* Any tunnel that requires isochronous bandwidth ( that ' s DP for now ) is
* attached to a bandwidth group . All tunnels going through the same
* USB4 links share the same group and can dynamically distribute the
* bandwidth within the group .
*/
struct tb_bandwidth_group {
struct tb *tb;
int index;
struct list_head ports;
int reserved;
struct delayed_work release_work;
};
/**
* struct tb_port - a thunderbolt port , part of a tb_switch
* @ config : Cached port configuration read from registers
* @ sw : Switch the port belongs to
* @ remote : Remote port ( % NULL if not connected )
* @ xdomain : Remote host ( % NULL if not connected )
* @ cap_phy : Offset , zero if not found
* @ cap_tmu : Offset of the adapter specific TMU capability ( % 0 if not present )
* @ cap_adap : Offset of the adapter specific capability ( % 0 if not present )
* @ cap_usb4 : Offset to the USB4 port capability ( % 0 if not present )
* @ usb4 : Pointer to the USB4 port structure ( only if @ cap_usb4 is ! = % 0 )
* @ port : Port number on switch
* @ disabled : Disabled by eeprom or enabled but not implemented
* @ bonded : true if the port is bonded ( two lanes combined as one )
* @ dual_link_port : If the switch is connected using two ports , points
* to the other port .
* @ link_nr : Is this primary or secondary port on the dual_link .
* @ in_hopids : Currently allocated input HopIDs
* @ out_hopids : Currently allocated output HopIDs
* @ list : Used to link ports to DP resources list
* @ total_credits : Total number of buffers available for this port
* @ ctl_credits : Buffers reserved for control path
* @ dma_credits : Number of credits allocated for DMA tunneling for all
* DMA paths through this port .
* @ group : Bandwidth allocation group the adapter is assigned to . Only
* used for DP IN adapters for now .
* @ group_list : The adapter is linked to the group ' s list of ports through this
* @ max_bw : Maximum possible bandwidth through this adapter if set to
* non - zero .
* @ redrive : For DP IN , if true the adapter is in redrive mode .
*
* In USB4 terminology this structure represents an adapter ( protocol or
* lane adapter ) .
*/
struct tb_port {
struct tb_regs_port_header config;
struct tb_switch *sw;
struct tb_port *remote;
struct tb_xdomain *xdomain;
int cap_phy;
int cap_tmu;
int cap_adap;
int cap_usb4;
struct usb4_port *usb4;
u8 port;
bool disabled;
bool bonded;
struct tb_port *dual_link_port;
u8 link_nr:1 ;
struct ida in_hopids;
struct ida out_hopids;
struct list_head list;
unsigned int total_credits;
unsigned int ctl_credits;
unsigned int dma_credits;
struct tb_bandwidth_group *group;
struct list_head group_list;
unsigned int max_bw;
bool redrive;
};
/**
* struct usb4_port - USB4 port device
* @ dev : Device for the port
* @ port : Pointer to the lane 0 adapter
* @ can_offline : Does the port have necessary platform support to moved
* it into offline mode and back
* @ offline : The port is currently in offline mode
* @ margining : Pointer to margining structure if enabled
*/
struct usb4_port {
struct device dev;
struct tb_port *port;
bool can_offline;
bool offline;
#ifdef CONFIG_USB4_DEBUGFS_MARGINING
struct tb_margining *margining;
#endif
};
/**
* tb_retimer : Thunderbolt retimer
* @ dev : Device for the retimer
* @ tb : Pointer to the domain the retimer belongs to
* @ index : Retimer index facing the router USB4 port
* @ vendor : Vendor ID of the retimer
* @ device : Device ID of the retimer
* @ port : Pointer to the lane 0 adapter
* @ nvm : Pointer to the NVM if the retimer has one ( % NULL otherwise )
* @ no_nvm_upgrade : Prevent NVM upgrade of this retimer
* @ auth_status : Status of last NVM authentication
* @ margining : Pointer to margining structure if enabled
*/
struct tb_retimer {
struct device dev;
struct tb *tb;
u8 index;
u32 vendor;
u32 device;
struct tb_port *port;
struct tb_nvm *nvm;
bool no_nvm_upgrade;
u32 auth_status;
#ifdef CONFIG_USB4_DEBUGFS_MARGINING
struct tb_margining *margining;
#endif
};
/**
* struct tb_path_hop - routing information for a tb_path
* @ in_port : Ingress port of a switch
* @ out_port : Egress port of a switch where the packet is routed out
* ( must be on the same switch than @ in_port )
* @ in_hop_index : HopID where the path configuration entry is placed in
* the path config space of @ in_port .
* @ in_counter_index : Used counter index ( not used in the driver
* currently , % - 1 to disable )
* @ next_hop_index : HopID of the packet when it is routed out from @ out_port
* @ initial_credits : Number of initial flow control credits allocated for
* the path
* @ nfc_credits : Number of non - flow controlled buffers allocated for the
* @ in_port .
* @ pm_support : Set path PM packet support bit to 1 ( for USB4 v2 routers )
*
* Hop configuration is always done on the IN port of a switch .
* in_port and out_port have to be on the same switch . Packets arriving on
* in_port with " hop " = in_hop_index will get routed to through out_port . The
* next hop to take ( on out_port - > remote ) is determined by
* next_hop_index . When routing packet to another switch ( out - > remote is
* set ) the @ next_hop_index must match the @ in_hop_index of that next
* hop to make routing possible .
*
* in_counter_index is the index of a counter ( in TB_CFG_COUNTERS ) on the in
* port .
*/
struct tb_path_hop {
struct tb_port *in_port;
struct tb_port *out_port;
int in_hop_index;
int in_counter_index;
int next_hop_index;
unsigned int initial_credits;
unsigned int nfc_credits;
bool pm_support;
};
/**
* enum tb_path_port - path options mask
* @ TB_PATH_NONE : Do not activate on any hop on path
* @ TB_PATH_SOURCE : Activate on the first hop ( out of src )
* @ TB_PATH_INTERNAL : Activate on the intermediate hops ( not the first / last )
* @ TB_PATH_DESTINATION : Activate on the last hop ( into dst )
* @ TB_PATH_ALL : Activate on all hops on the path
*/
enum tb_path_port {
TB_PATH_NONE = 0 ,
TB_PATH_SOURCE = 1 ,
TB_PATH_INTERNAL = 2 ,
TB_PATH_DESTINATION = 4 ,
TB_PATH_ALL = 7 ,
};
/**
* struct tb_path - a unidirectional path between two ports
* @ tb : Pointer to the domain structure
* @ name : Name of the path ( used for debugging )
* @ ingress_shared_buffer : Shared buffering used for ingress ports on the path
* @ egress_shared_buffer : Shared buffering used for egress ports on the path
* @ ingress_fc_enable : Flow control for ingress ports on the path
* @ egress_fc_enable : Flow control for egress ports on the path
* @ priority : Priority group if the path
* @ weight : Weight of the path inside the priority group
* @ drop_packages : Drop packages from queue tail or head
* @ activated : Is the path active
* @ clear_fc : Clear all flow control from the path config space entries
* when deactivating this path
* @ hops : Path hops
* @ path_length : How many hops the path uses
* @ alloc_hopid : Does this path consume port HopID
*
* A path consists of a number of hops ( see & struct tb_path_hop ) . To
* establish a PCIe tunnel two paths have to be created between the two
* PCIe ports .
*/
struct tb_path {
struct tb *tb;
const char *name;
enum tb_path_port ingress_shared_buffer;
enum tb_path_port egress_shared_buffer;
enum tb_path_port ingress_fc_enable;
enum tb_path_port egress_fc_enable;
unsigned int priority:3 ;
int weight:4 ;
bool drop_packages;
bool activated;
bool clear_fc;
struct tb_path_hop *hops;
int path_length;
bool alloc_hopid;
};
/* HopIDs 0-7 are reserved by the Thunderbolt protocol */
#define TB_PATH_MIN_HOPID 8
/*
* Support paths from the farthest ( depth 6 ) router to the host and back
* to the same level ( not necessarily to the same router ) .
*/
#define TB_PATH_MAX_HOPS (7 * 2 )
/* Possible wake types */
#define TB_WAKE_ON_CONNECT BIT(0 )
#define TB_WAKE_ON_DISCONNECT BIT(1 )
#define TB_WAKE_ON_USB4 BIT(2 )
#define TB_WAKE_ON_USB3 BIT(3 )
#define TB_WAKE_ON_PCIE BIT(4 )
#define TB_WAKE_ON_DP BIT(5 )
/* CL states */
#define TB_CL0S BIT(0 )
#define TB_CL1 BIT(1 )
#define TB_CL2 BIT(2 )
/**
* struct tb_cm_ops - Connection manager specific operations vector
* @ driver_ready : Called right after control channel is started . Used by
* ICM to send driver ready message to the firmware .
* @ start : Starts the domain
* @ stop : Stops the domain
* @ deinit : Perform any cleanup after the domain is stopped but before
* it is unregistered . Called without @ tb - > lock taken . Optional .
* @ suspend_noirq : Connection manager specific suspend_noirq
* @ resume_noirq : Connection manager specific resume_noirq
* @ suspend : Connection manager specific suspend
* @ freeze_noirq : Connection manager specific freeze_noirq
* @ thaw_noirq : Connection manager specific thaw_noirq
* @ complete : Connection manager specific complete
* @ runtime_suspend : Connection manager specific runtime_suspend
* @ runtime_resume : Connection manager specific runtime_resume
* @ runtime_suspend_switch : Runtime suspend a switch
* @ runtime_resume_switch : Runtime resume a switch
* @ handle_event : Handle thunderbolt event
* @ get_boot_acl : Get boot ACL list
* @ set_boot_acl : Set boot ACL list
* @ disapprove_switch : Disapprove switch ( disconnect PCIe tunnel )
* @ approve_switch : Approve switch
* @ add_switch_key : Add key to switch
* @ challenge_switch_key : Challenge switch using key
* @ disconnect_pcie_paths : Disconnects PCIe paths before NVM update
* @ approve_xdomain_paths : Approve ( establish ) XDomain DMA paths
* @ disconnect_xdomain_paths : Disconnect XDomain DMA paths
* @ usb4_switch_op : Optional proxy for USB4 router operations . If set
* this will be called whenever USB4 router operation is
* performed . If this returns % - EOPNOTSUPP then the
* native USB4 router operation is called .
* @ usb4_switch_nvm_authenticate_status : Optional callback that the CM
* implementation can be used to
* return status of USB4 NVM_AUTH
* router operation .
*/
struct tb_cm_ops {
int (*driver_ready)(struct tb *tb);
int (*start)(struct tb *tb, bool reset);
void (*stop)(struct tb *tb);
void (*deinit)(struct tb *tb);
int (*suspend_noirq)(struct tb *tb);
int (*resume_noirq)(struct tb *tb);
int (*suspend)(struct tb *tb);
int (*freeze_noirq)(struct tb *tb);
int (*thaw_noirq)(struct tb *tb);
void (*complete)(struct tb *tb);
int (*runtime_suspend)(struct tb *tb);
int (*runtime_resume)(struct tb *tb);
int (*runtime_suspend_switch)(struct tb_switch *sw);
int (*runtime_resume_switch)(struct tb_switch *sw);
void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
const void *buf, size_t size);
int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
int (*disapprove_switch)(struct tb *tb, struct tb_switch *sw);
int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
const u8 *challenge, u8 *response);
int (*disconnect_pcie_paths)(struct tb *tb);
int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
int transmit_path, int transmit_ring,
int receive_path, int receive_ring);
int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
int transmit_path, int transmit_ring,
int receive_path, int receive_ring);
int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
u8 *status, const void *tx_data, size_t tx_data_len,
void *rx_data, size_t rx_data_len);
int (*usb4_switch_nvm_authenticate_status)(struct tb_switch *sw,
u32 *status);
};
static inline void *tb_priv(struct tb *tb)
{
return (void *)tb->privdata;
}
#define TB_AUTOSUSPEND_DELAY 15000 /* ms */
/* helper functions & macros */
/**
* tb_upstream_port ( ) - return the upstream port of a switch
*
* Every switch has an upstream port ( for the root switch it is the NHI ) .
*
* During switch alloc / init tb_upstream_port ( ) - > remote may be NULL , even for
* non root switches ( on the NHI port remote is always NULL ) .
*
* Return : Returns the upstream port of the switch .
*/
static inline struct tb_port *tb_upstream_port(struct tb_switch *sw)
{
return &sw->ports[sw->config.upstream_port_number];
}
/**
* tb_is_upstream_port ( ) - Is the port upstream facing
* @ port : Port to check
*
* Returns true if @ port is upstream facing port . In case of dual link
* ports both return true .
*/
static inline bool tb_is_upstream_port(const struct tb_port *port)
{
const struct tb_port *upstream_port = tb_upstream_port(port->sw);
return port == upstream_port || port->dual_link_port == upstream_port;
}
static inline u64 tb_route(const struct tb_switch *sw)
{
return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
}
static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw)
{
u8 port;
port = route >> (sw->config.depth * 8 );
if (WARN_ON(port > sw->config.max_port_number))
return NULL;
return &sw->ports[port];
}
static inline const char *tb_width_name(enum tb_link_width width)
{
switch (width) {
case TB_LINK_WIDTH_SINGLE:
return "symmetric, single lane" ;
case TB_LINK_WIDTH_DUAL:
return "symmetric, dual lanes" ;
case TB_LINK_WIDTH_ASYM_TX:
return "asymmetric, 3 transmitters, 1 receiver" ;
case TB_LINK_WIDTH_ASYM_RX:
return "asymmetric, 3 receivers, 1 transmitter" ;
default :
return "unknown" ;
}
}
/**
* tb_port_has_remote ( ) - Does the port have switch connected downstream
* @ port : Port to check
*
* Returns true only when the port is primary port and has remote set .
*/
static inline bool tb_port_has_remote(const struct tb_port *port)
{
if (tb_is_upstream_port(port))
return false ;
if (!port->remote)
return false ;
if (port->dual_link_port && port->link_nr)
return false ;
return true ;
}
static inline bool tb_port_is_null(const struct tb_port *port)
{
return port && port->port && port->config.type == TB_TYPE_PORT;
}
static inline bool tb_port_is_nhi(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_NHI;
}
static inline bool tb_port_is_pcie_down(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_PCIE_DOWN;
}
static inline bool tb_port_is_pcie_up(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_PCIE_UP;
}
static inline bool tb_port_is_dpin(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_DP_HDMI_IN;
}
static inline bool tb_port_is_dpout(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_DP_HDMI_OUT;
}
static inline bool tb_port_is_usb3_down(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_USB3_DOWN;
}
static inline bool tb_port_is_usb3_up(const struct tb_port *port)
{
return port && port->config.type == TB_TYPE_USB3_UP;
}
static inline int tb_sw_read(struct tb_switch *sw, void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
if (sw->is_unplugged)
return -ENODEV;
return tb_cfg_read(sw->tb->ctl,
buffer,
tb_route(sw),
0 ,
space,
offset,
length);
}
static inline int tb_sw_write(struct tb_switch *sw, const void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
if (sw->is_unplugged)
return -ENODEV;
return tb_cfg_write(sw->tb->ctl,
buffer,
tb_route(sw),
0 ,
space,
offset,
length);
}
static inline int tb_port_read(struct tb_port *port, void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
if (port->sw->is_unplugged)
return -ENODEV;
return tb_cfg_read(port->sw->tb->ctl,
buffer,
tb_route(port->sw),
port->port,
space,
offset,
length);
}
static inline int tb_port_write(struct tb_port *port, const void *buffer,
enum tb_cfg_space space, u32 offset, u32 length)
{
if (port->sw->is_unplugged)
return -ENODEV;
return tb_cfg_write(port->sw->tb->ctl,
buffer,
tb_route(port->sw),
port->port,
space,
offset,
length);
}
#define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
#define __TB_SW_PRINT(level, sw, fmt, arg...) \
do { \
const struct tb_switch *__sw = (sw); \
level(__sw->tb, "%llx: " fmt, \
tb_route(__sw), ## arg); \
} while (0 )
#define tb_sw_WARN(sw, fmt, arg...) __TB_SW_PRINT(tb_WARN, sw, fmt, ## arg)
#define tb_sw_warn(sw, fmt, arg...) __TB_SW_PRINT(tb_warn, sw, fmt, ## arg)
#define tb_sw_info(sw, fmt, arg...) __TB_SW_PRINT(tb_info, sw, fmt, ## arg)
#define tb_sw_dbg(sw, fmt, arg...) __TB_SW_PRINT(tb_dbg, sw, fmt, ## arg)
#define __TB_PORT_PRINT(level, _port, fmt, arg...) \
do { \
const struct tb_port *__port = (_port); \
level(__port->sw->tb, "%llx:%u: " fmt, \
tb_route(__port->sw), __port->port, ## arg); \
} while (0 )
#define tb_port_WARN(port, fmt, arg...) \
__TB_PORT_PRINT(tb_WARN, port, fmt, ## arg)
#define tb_port_warn(port, fmt, arg...) \
__TB_PORT_PRINT(tb_warn, port, fmt, ## arg)
#define tb_port_info(port, fmt, arg...) \
__TB_PORT_PRINT(tb_info, port, fmt, ## arg)
#define tb_port_dbg(port, fmt, arg...) \
__TB_PORT_PRINT(tb_dbg, port, fmt, ## arg)
struct tb *icm_probe(struct tb_nhi *nhi);
struct tb *tb_probe(struct tb_nhi *nhi);
extern const struct device_type tb_domain_type;
extern const struct device_type tb_retimer_type;
extern const struct device_type tb_switch_type;
extern const struct device_type usb4_port_device_type;
int tb_domain_init(void );
void tb_domain_exit(void );
int tb_xdomain_init(void );
void tb_xdomain_exit(void );
struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize);
int tb_domain_add(struct tb *tb, bool reset);
void tb_domain_remove(struct tb *tb);
int tb_domain_suspend_noirq(struct tb *tb);
int tb_domain_resume_noirq(struct tb *tb);
int tb_domain_suspend(struct tb *tb);
int tb_domain_freeze_noirq(struct tb *tb);
int tb_domain_thaw_noirq(struct tb *tb);
void tb_domain_complete(struct tb *tb);
int tb_domain_runtime_suspend(struct tb *tb);
int tb_domain_runtime_resume(struct tb *tb);
int tb_domain_disapprove_switch(struct tb *tb, struct tb_switch *sw);
int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
int tb_domain_disconnect_pcie_paths(struct tb *tb);
int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
int transmit_path, int transmit_ring,
int receive_path, int receive_ring);
int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
int transmit_path, int transmit_ring,
int receive_path, int receive_ring);
int tb_domain_disconnect_all_paths(struct tb *tb);
static inline struct tb *tb_domain_get(struct tb *tb)
{
if (tb)
get_device(&tb->dev);
return tb;
}
static inline void tb_domain_put(struct tb *tb)
{
put_device(&tb->dev);
}
/**
* tb_domain_event ( ) - Notify userspace about an event in domain
* @ tb : Domain where event occurred
* @ envp : Array of uevent environment strings ( can be % NULL )
*
* This function provides a way to notify userspace about any events
* that take place in the domain .
*/
static inline void tb_domain_event(struct tb *tb, char *envp[])
{
kobject_uevent_env(&tb->dev.kobj, KOBJ_CHANGE, envp);
}
struct tb_nvm *tb_nvm_alloc(struct device *dev);
int tb_nvm_read_version(struct tb_nvm *nvm);
int tb_nvm_validate(struct tb_nvm *nvm);
int tb_nvm_write_headers(struct tb_nvm *nvm);
int tb_nvm_add_active(struct tb_nvm *nvm, nvmem_reg_read_t reg_read);
int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
size_t bytes);
int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write);
void tb_nvm_free(struct tb_nvm *nvm);
void tb_nvm_exit(void );
typedef int (*read_block_fn)(void *, unsigned int , void *, size_t);
typedef int (*write_block_fn)(void *, unsigned int , const void *, size_t);
int tb_nvm_read_data(unsigned int address, void *buf, size_t size,
unsigned int retries, read_block_fn read_block,
void *read_block_data);
int tb_nvm_write_data(unsigned int address, const void *buf, size_t size,
unsigned int retries, write_block_fn write_next_block,
void *write_block_data);
int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
size_t size);
struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
u64 route);
struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
struct device *parent, u64 route);
int tb_switch_configure(struct tb_switch *sw);
int tb_switch_configuration_valid(struct tb_switch *sw);
int tb_switch_add(struct tb_switch *sw);
void tb_switch_remove(struct tb_switch *sw);
void tb_switch_suspend(struct tb_switch *sw, bool runtime);
int tb_switch_resume(struct tb_switch *sw, bool runtime);
int tb_switch_reset(struct tb_switch *sw);
int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
u32 value, int timeout_msec);
void tb_sw_set_unplugged(struct tb_switch *sw);
struct tb_port *tb_switch_find_port(struct tb_switch *sw,
enum tb_port_type type);
struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
/**
* tb_switch_for_each_port ( ) - Iterate over each switch port
* @ sw : Switch whose ports to iterate
* @ p : Port used as iterator
*
* Iterates over each switch port skipping the control port ( port % 0 ) .
*/
#define tb_switch_for_each_port(sw, p) \
for ((p) = &(sw)->ports[1 ]; \
(p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
{
if (sw)
get_device(&sw->dev);
return sw;
}
static inline void tb_switch_put(struct tb_switch *sw)
{
put_device(&sw->dev);
}
static inline bool tb_is_switch(const struct device *dev)
{
return dev->type == &tb_switch_type;
}
static inline struct tb_switch *tb_to_switch(const struct device *dev)
{
if (tb_is_switch(dev))
return container_of(dev, struct tb_switch, dev);
return NULL;
}
static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw)
{
return tb_to_switch(sw->dev.parent);
}
/**
* tb_switch_downstream_port ( ) - Return downstream facing port of parent router
* @ sw : Device router pointer
*
* Only call for device routers . Returns the downstream facing port of
* the parent router .
*/
static inline struct tb_port *tb_switch_downstream_port(struct tb_switch *sw)
{
if (WARN_ON(!tb_route(sw)))
return NULL;
return tb_port_at(tb_route(sw), tb_switch_parent(sw));
}
/**
* tb_switch_depth ( ) - Returns depth of the connected router
* @ sw : Router
*/
static inline int tb_switch_depth(const struct tb_switch *sw)
{
return sw->config.depth;
}
static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
{
return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE;
}
static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw)
{
return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE;
}
static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw)
{
if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C:
case PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C:
return true ;
}
}
return false ;
}
static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw)
{
if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE:
return true ;
}
}
return false ;
}
static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw)
{
if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
return true ;
}
}
return false ;
}
static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw)
{
if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
return true ;
}
}
return false ;
}
static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw)
{
if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) {
switch (sw->config.device_id) {
case PCI_DEVICE_ID_INTEL_TGL_NHI0:
case PCI_DEVICE_ID_INTEL_TGL_NHI1:
case PCI_DEVICE_ID_INTEL_TGL_H_NHI0:
case PCI_DEVICE_ID_INTEL_TGL_H_NHI1:
return true ;
}
}
return false ;
}
/**
* tb_switch_is_icm ( ) - Is the switch handled by ICM firmware
* @ sw : Switch to check
*
* In case there is a need to differentiate whether ICM firmware or SW CM
* is handling @ sw this function can be called . It is valid to call this
* after tb_switch_alloc ( ) and tb_switch_configure ( ) has been called
* ( latter only for SW CM case ) .
*/
static inline bool tb_switch_is_icm(const struct tb_switch *sw)
{
return !sw->config.enabled;
}
int tb_switch_set_link_width(struct tb_switch *sw, enum tb_link_width width);
int tb_switch_configure_link(struct tb_switch *sw);
void tb_switch_unconfigure_link(struct tb_switch *sw);
bool tb_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
int tb_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
void tb_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
int tb_switch_tmu_init(struct tb_switch *sw);
int tb_switch_tmu_post_time(struct tb_switch *sw);
int tb_switch_tmu_disable(struct tb_switch *sw);
int tb_switch_tmu_enable(struct tb_switch *sw);
int tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_mode mode);
/**
* tb_switch_tmu_is_configured ( ) - Is given TMU mode configured
* @ sw : Router whose mode to check
* @ mode : Mode to check
*
* Checks if given router TMU mode is configured to @ mode . Note the
* router TMU might not be enabled to this mode .
*/
static inline bool tb_switch_tmu_is_configured(const struct tb_switch *sw,
enum tb_switch_tmu_mode mode)
{
return sw->tmu.mode_request == mode;
}
/**
* tb_switch_tmu_is_enabled ( ) - Checks if the specified TMU mode is enabled
* @ sw : Router whose TMU mode to check
*
* Return true if hardware TMU configuration matches the requested
* configuration ( and is not % TB_SWITCH_TMU_MODE_OFF ) .
*/
static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw)
{
return sw->tmu.mode != TB_SWITCH_TMU_MODE_OFF &&
sw->tmu.mode == sw->tmu.mode_request;
}
bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx);
int tb_switch_clx_init(struct tb_switch *sw);
int tb_switch_clx_enable(struct tb_switch *sw, unsigned int clx);
int tb_switch_clx_disable(struct tb_switch *sw);
/**
* tb_switch_clx_is_enabled ( ) - Checks if the CLx is enabled
* @ sw : Router to check for the CLx
* @ clx : The CLx states to check for
*
* Checks if the specified CLx is enabled on the router upstream link .
* Returns true if any of the given states is enabled .
*
* Not applicable for a host router .
*/
static inline bool tb_switch_clx_is_enabled(const struct tb_switch *sw,
unsigned int clx)
{
return sw->clx & clx;
}
int tb_switch_pcie_l1_enable(struct tb_switch *sw);
int tb_switch_xhci_connect(struct tb_switch *sw);
void tb_switch_xhci_disconnect(struct tb_switch *sw);
int tb_port_state(struct tb_port *port);
int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged);
int tb_port_add_nfc_credits(struct tb_port *port, int credits);
int tb_port_clear_counter(struct tb_port *port, int counter);
int tb_port_unlock(struct tb_port *port);
int tb_port_enable(struct tb_port *port);
int tb_port_disable(struct tb_port *port);
int tb_port_alloc_in_hopid(struct tb_port *port, int hopid, int max_hopid);
void tb_port_release_in_hopid(struct tb_port *port, int hopid);
int tb_port_alloc_out_hopid(struct tb_port *port, int hopid, int max_hopid);
void tb_port_release_out_hopid(struct tb_port *port, int hopid);
struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
struct tb_port *prev);
/**
* tb_port_path_direction_downstream ( ) - Checks if path directed downstream
* @ src : Source adapter
* @ dst : Destination adapter
*
* Returns % true only if the specified path from source adapter ( @ src )
* to destination adapter ( @ dst ) is directed downstream .
*/
static inline bool
tb_port_path_direction_downstream(const struct tb_port *src,
const struct tb_port *dst)
{
return src->sw->config.depth < dst->sw->config.depth;
}
static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
{
return tb_port_is_null(port) && port->sw->credit_allocation;
}
/**
* tb_for_each_port_on_path ( ) - Iterate over each port on path
* @ src : Source port
* @ dst : Destination port
* @ p : Port used as iterator
*
* Walks over each port on path from @ src to @ dst .
*/
#define tb_for_each_port_on_path(src, dst, p) \
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p)))
/**
* tb_for_each_upstream_port_on_path ( ) - Iterate over each upstreamm port on path
* @ src : Source port
* @ dst : Destination port
* @ p : Port used as iterator
*
* Walks over each upstream lane adapter on path from @ src to @ dst .
*/
#define tb_for_each_upstream_port_on_path(src, dst, p) \
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p))) \
if (!tb_port_is_null((p)) || !tb_is_upstream_port((p))) {\
continue ; \
} else
int tb_port_get_link_speed(struct tb_port *port);
int tb_port_get_link_generation(struct tb_port *port);
int tb_port_get_link_width(struct tb_port *port);
bool tb_port_width_supported(struct tb_port *port, unsigned int width);
int tb_port_set_link_width(struct tb_port *port, enum tb_link_width width);
int tb_port_lane_bonding_enable(struct tb_port *port);
void tb_port_lane_bonding_disable(struct tb_port *port);
int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width,
int timeout_msec);
int tb_port_update_credits(struct tb_port *port);
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
int tb_port_next_cap(struct tb_port *port, unsigned int offset);
bool tb_port_is_enabled(struct tb_port *port);
bool tb_usb3_port_is_enabled(struct tb_port *port);
int tb_usb3_port_enable(struct tb_port *port, bool enable);
bool tb_pci_port_is_enabled(struct tb_port *port);
int tb_pci_port_enable(struct tb_port *port, bool enable);
int tb_dp_port_hpd_is_active(struct tb_port *port);
int tb_dp_port_hpd_clear(struct tb_port *port);
int tb_dp_port_set_hops(struct tb_port *port, unsigned int video,
unsigned int aux_tx, unsigned int aux_rx);
bool tb_dp_port_is_enabled(struct tb_port *port);
int tb_dp_port_enable(struct tb_port *port, bool enable);
struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid,
struct tb_port *dst, int dst_hopid,
struct tb_port **last, const char *name,
bool alloc_hopid);
struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
struct tb_port *dst, int dst_hopid, int link_nr,
const char *name);
void tb_path_free(struct tb_path *path);
int tb_path_activate(struct tb_path *path);
void tb_path_deactivate(struct tb_path *path);
int tb_path_deactivate_hop(struct tb_port *port, int hop_index);
bool tb_path_is_invalid(struct tb_path *path);
bool tb_path_port_on_path(const struct tb_path *path,
const struct tb_port *port);
/**
* tb_path_for_each_hop ( ) - Iterate over each hop on path
* @ path : Path whose hops to iterate
* @ hop : Hop used as iterator
*
* Iterates over each hop on path .
*/
#define tb_path_for_each_hop(path, hop) \
for ((hop) = &(path)->hops[0 ]; \
(hop) <= &(path)->hops[(path)->path_length - 1 ]; (hop)++)
int tb_drom_read(struct tb_switch *sw);
int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
int tb_lc_read_uuid(struct tb_switch *sw, u32 *uuid);
int tb_lc_reset_port(struct tb_port *port);
int tb_lc_configure_port(struct tb_port *port);
void tb_lc_unconfigure_port(struct tb_port *port);
int tb_lc_configure_xdomain(struct tb_port *port);
void tb_lc_unconfigure_xdomain(struct tb_port *port);
int tb_lc_start_lane_initialization(struct tb_port *port);
bool tb_lc_is_clx_supported(struct tb_port *port);
bool tb_lc_is_usb_plugged(struct tb_port *port);
bool tb_lc_is_xhci_connected(struct tb_port *port);
int tb_lc_xhci_connect(struct tb_port *port);
void tb_lc_xhci_disconnect(struct tb_port *port);
int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags);
int tb_lc_set_sleep(struct tb_switch *sw);
bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
int tb_lc_force_power(struct tb_switch *sw);
static inline int tb_route_length(u64 route)
{
return (fls64(route) + TB_ROUTE_SHIFT - 1 ) / TB_ROUTE_SHIFT;
}
/**
* tb_downstream_route ( ) - get route to downstream switch
*
* Port must not be the upstream port ( otherwise a loop is created ) .
*
* Return : Returns a route to the switch behind @ port .
*/
static inline u64 tb_downstream_route(struct tb_port *port)
{
return tb_route(port->sw)
| ((u64) port->port << (port->sw->config.depth * 8 ));
}
bool tb_is_xdomain_enabled(void );
bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
const void *buf, size_t size);
struct tb_xdomain *tb_xdomain_alloc(struct tb *tb, struct device *parent,
u64 route, const uuid_t *local_uuid,
const uuid_t *remote_uuid);
void tb_xdomain_add(struct tb_xdomain *xd);
void tb_xdomain_remove(struct tb_xdomain *xd);
struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
static inline struct tb_switch *tb_xdomain_parent(struct tb_xdomain *xd)
{
return tb_to_switch(xd->dev.parent);
}
/**
* tb_xdomain_downstream_port ( ) - Return downstream facing port of parent router
* @ xd : Xdomain pointer
*
* Returns the downstream port the XDomain is connected to .
*/
static inline struct tb_port *tb_xdomain_downstream_port(struct tb_xdomain *xd)
{
return tb_port_at(xd->route, tb_xdomain_parent(xd));
}
int tb_retimer_nvm_read(struct tb_retimer *rt, unsigned int address, void *buf,
size_t size);
int tb_retimer_scan(struct tb_port *port, bool add);
void tb_retimer_remove_all(struct tb_port *port);
static inline bool tb_is_retimer(const struct device *dev)
{
return dev->type == &tb_retimer_type;
}
static inline struct tb_retimer *tb_to_retimer(struct device *dev)
{
if (tb_is_retimer(dev))
return container_of(dev, struct tb_retimer, dev);
return NULL;
}
/**
* usb4_switch_version ( ) - Returns USB4 version of the router
* @ sw : Router to check
*
* Returns major version of USB4 router ( % 1 for v1 , % 2 for v2 and so
* on ) . Can be called to pre - USB4 router too and in that case returns % 0 .
*/
static inline unsigned int usb4_switch_version(const struct tb_switch *sw)
{
return FIELD_GET(USB4_VERSION_MAJOR_MASK, sw->config.thunderbolt_version);
}
/**
* tb_switch_is_usb4 ( ) - Is the switch USB4 compliant
* @ sw : Switch to check
*
* Returns true if the @ sw is USB4 compliant router , false otherwise .
*/
static inline bool tb_switch_is_usb4(const struct tb_switch *sw)
{
return usb4_switch_version(sw) > 0 ;
}
void usb4_switch_check_wakes(struct tb_switch *sw);
int usb4_switch_setup(struct tb_switch *sw);
int usb4_switch_configuration_valid(struct tb_switch *sw);
int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
size_t size);
bool usb4_switch_lane_bonding_possible(struct tb_switch *sw);
int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags, bool runtime);
int usb4_switch_set_sleep(struct tb_switch *sw);
int usb4_switch_nvm_sector_size(struct tb_switch *sw);
int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
size_t size);
int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsigned int address);
int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
const void *buf, size_t size);
int usb4_switch_nvm_authenticate(struct tb_switch *sw);
int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
int usb4_switch_credits_init(struct tb_switch *sw);
bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
const struct tb_port *port);
struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
const struct tb_port *port);
int usb4_switch_add_ports(struct tb_switch *sw);
void usb4_switch_remove_ports(struct tb_switch *sw);
int usb4_port_unlock(struct tb_port *port);
int usb4_port_hotplug_enable(struct tb_port *port);
int usb4_port_reset(struct tb_port *port);
int usb4_port_configure(struct tb_port *port);
void usb4_port_unconfigure(struct tb_port *port);
int usb4_port_configure_xdomain(struct tb_port *port, struct tb_xdomain *xd);
void usb4_port_unconfigure_xdomain(struct tb_port *port);
int usb4_port_router_offline(struct tb_port *port);
int usb4_port_router_online(struct tb_port *port);
int usb4_port_enumerate_retimers(struct tb_port *port);
bool usb4_port_clx_supported(struct tb_port *port);
bool usb4_port_asym_supported(struct tb_port *port);
int usb4_port_asym_set_link_width(struct tb_port *port, enum tb_link_width width);
int usb4_port_asym_start(struct tb_port *port);
/**
* enum tb_sb_target - Sideband transaction target
* @ USB4_SB_TARGET_ROUTER : Target is the router itself
* @ USB4_SB_TARGET_PARTNER : Target is partner
* @ USB4_SB_TARGET_RETIMER : Target is retimer
*/
enum usb4_sb_target {
USB4_SB_TARGET_ROUTER,
USB4_SB_TARGET_PARTNER,
USB4_SB_TARGET_RETIMER,
};
int usb4_port_sb_read(struct tb_port *port, enum usb4_sb_target target, u8 index,
u8 reg, void *buf, u8 size);
int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target,
u8 index, u8 reg, const void *buf, u8 size);
/**
* enum usb4_margin_sw_error_counter - Software margining error counter operation
* @ USB4_MARGIN_SW_ERROR_COUNTER_NOP : No change in counter setup
* @ USB4_MARGIN_SW_ERROR_COUNTER_CLEAR : Set the error counter to 0 , enable counter
* @ USB4_MARGIN_SW_ERROR_COUNTER_START : Start counter , count from last value
* @ USB4_MARGIN_SW_ERROR_COUNTER_STOP : Stop counter , do not clear value
*/
enum usb4_margin_sw_error_counter {
USB4_MARGIN_SW_ERROR_COUNTER_NOP,
USB4_MARGIN_SW_ERROR_COUNTER_CLEAR,
USB4_MARGIN_SW_ERROR_COUNTER_START,
USB4_MARGIN_SW_ERROR_COUNTER_STOP,
};
enum usb4_margining_lane {
USB4_MARGINING_LANE_RX0 = 0 ,
USB4_MARGINING_LANE_RX1 = 1 ,
USB4_MARGINING_LANE_RX2 = 2 ,
USB4_MARGINING_LANE_ALL = 7 ,
};
/**
* struct usb4_port_margining_params - USB4 margining parameters
* @ error_counter : Error counter operation for software margining
* @ ber_level : Current BER level contour value
* @ lanes : Lanes to enable for the margining operation
* @ voltage_time_offset : Offset for voltage / time for software margining
* @ optional_voltage_offset_range : Enable optional extended voltage range
* @ right_high : % false if left / low margin test is performed , % true if right / high
* @ time : % true if time margining is used instead of voltage
*/
struct usb4_port_margining_params {
enum usb4_margin_sw_error_counter error_counter;
u32 ber_level;
enum usb4_margining_lane lanes;
u32 voltage_time_offset;
bool optional_voltage_offset_range;
bool right_high;
bool upper_eye;
bool time;
};
int usb4_port_margining_caps(struct tb_port *port, enum usb4_sb_target target,
u8 index, u32 *caps, size_t ncaps);
int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target,
u8 index, const struct usb4_port_margining_params *params,
u32 *results, size_t nresults);
int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target,
u8 index, const struct usb4_port_margining_params *params,
u32 *results);
int usb4_port_sw_margin_errors(struct tb_port *port, enum usb4_sb_target target,
u8 index, u32 *errors);
int usb4_port_retimer_set_inbound_sbtx(struct tb_port *port, u8 index);
int usb4_port_retimer_unset_inbound_sbtx(struct tb_port *port, u8 index);
int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
int usb4_port_retimer_is_cable(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
unsigned int address);
int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
unsigned int address, const void *buf,
size_t size);
int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
u32 *status);
int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
unsigned int address, void *buf, size_t size);
int usb4_usb3_port_max_link_rate(struct tb_port *port);
int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
int usb4_dp_port_set_cm_id(struct tb_port *port, int cm_id);
bool usb4_dp_port_bandwidth_mode_supported(struct tb_port *port);
bool usb4_dp_port_bandwidth_mode_enabled(struct tb_port *port);
int usb4_dp_port_set_cm_bandwidth_mode_supported(struct tb_port *port,
bool supported);
int usb4_dp_port_group_id(struct tb_port *port);
int usb4_dp_port_set_group_id(struct tb_port *port, int group_id);
int usb4_dp_port_nrd(struct tb_port *port, int *rate, int *lanes);
int usb4_dp_port_set_nrd(struct tb_port *port, int rate, int lanes);
int usb4_dp_port_granularity(struct tb_port *port);
int usb4_dp_port_set_granularity(struct tb_port *port, int granularity);
int usb4_dp_port_set_estimated_bandwidth(struct tb_port *port, int bw);
int usb4_dp_port_allocated_bandwidth(struct tb_port *port);
int usb4_dp_port_allocate_bandwidth(struct tb_port *port, int bw);
int usb4_dp_port_requested_bandwidth(struct tb_port *port);
int usb4_pci_port_set_ext_encapsulation(struct tb_port *port, bool enable);
static inline bool tb_is_usb4_port_device(const struct device *dev)
{
return dev->type == &usb4_port_device_type;
}
static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev)
{
if (tb_is_usb4_port_device(dev))
return container_of(dev, struct usb4_port, dev);
return NULL;
}
struct usb4_port *usb4_port_device_add(struct tb_port *port);
void usb4_port_device_remove(struct usb4_port *usb4);
int usb4_port_device_resume(struct usb4_port *usb4);
int usb4_port_index(const struct tb_switch *sw, const struct tb_port *port);
static inline bool usb4_port_device_is_offline(const struct usb4_port *usb4)
{
return usb4->offline;
}
void tb_check_quirks(struct tb_switch *sw);
#ifdef CONFIG_ACPI
bool tb_acpi_add_links(struct tb_nhi *nhi);
bool tb_acpi_is_native(void );
bool tb_acpi_may_tunnel_usb3(void );
bool tb_acpi_may_tunnel_dp(void );
bool tb_acpi_may_tunnel_pcie(void );
bool tb_acpi_is_xdomain_allowed(void );
int tb_acpi_init(void );
void tb_acpi_exit(void );
int tb_acpi_power_on_retimers(struct tb_port *port);
int tb_acpi_power_off_retimers(struct tb_port *port);
#else
static inline bool tb_acpi_add_links(struct tb_nhi *nhi) { return false ; }
static inline bool tb_acpi_is_native(void ) { return true ; }
static inline bool tb_acpi_may_tunnel_usb3(void ) { return true ; }
static inline bool tb_acpi_may_tunnel_dp(void ) { return true ; }
static inline bool tb_acpi_may_tunnel_pcie(void ) { return true ; }
static inline bool tb_acpi_is_xdomain_allowed(void ) { return true ; }
static inline int tb_acpi_init(void ) { return 0 ; }
static inline void tb_acpi_exit(void ) { }
static inline int tb_acpi_power_on_retimers(struct tb_port *port) { return 0 ; }
static inline int tb_acpi_power_off_retimers(struct tb_port *port) { return 0 ; }
#endif
#ifdef CONFIG_DEBUG_FS
void tb_debugfs_init(void );
void tb_debugfs_exit(void );
void tb_switch_debugfs_init(struct tb_switch *sw);
void tb_switch_debugfs_remove(struct tb_switch *sw);
void tb_xdomain_debugfs_init(struct tb_xdomain *xd);
void tb_xdomain_debugfs_remove(struct tb_xdomain *xd);
void tb_service_debugfs_init(struct tb_service *svc);
void tb_service_debugfs_remove(struct tb_service *svc);
void tb_retimer_debugfs_init(struct tb_retimer *rt);
void tb_retimer_debugfs_remove(struct tb_retimer *rt);
#else
static inline void tb_debugfs_init(void ) { }
static inline void tb_debugfs_exit(void ) { }
static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
static inline void tb_xdomain_debugfs_init(struct tb_xdomain *xd) { }
static inline void tb_xdomain_debugfs_remove(struct tb_xdomain *xd) { }
static inline void tb_service_debugfs_init(struct tb_service *svc) { }
static inline void tb_service_debugfs_remove(struct tb_service *svc) { }
static inline void tb_retimer_debugfs_init(struct tb_retimer *rt) { }
static inline void tb_retimer_debugfs_remove(struct tb_retimer *rt) { }
#endif
#endif
Messung V0.5 in Prozent C=98 H=99 G=98
¤ Dauer der Verarbeitung: 0.55 Sekunden
(vorverarbeitet am 2026-09-27)
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