/* SPDX-License-Identifier: GPL-2.0 */ /* * Thunderbolt driver - bus logic (NHI independent) * * Copyright (c) 2014 Andreas Noever <[email protected]> * Copyright (C) 2018, Intel Corporation */ #ifndef TB_H_ #define TB_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 … /* Disable CLx if not supported */ #define QUIRK_NO_CLX … /* Need to keep power on while USB4 port is in redrive mode */ #define QUIRK_KEEP_POWER_IN_DP_REDRIVE … /** * 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 { … }; enum tb_nvm_write_ops { … }; #define TB_SWITCH_KEY_SIZE … #define TB_SWITCH_MAX_DEPTH … #define USB4_SWITCH_MAX_DEPTH … /** * 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 { … }; /** * 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 { … }; /** * 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 * * 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 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_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 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 { … }; /** * 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 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 { … }; /** * 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 { … }; /** * 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 { … }; /* HopIDs 0-7 are reserved by the Thunderbolt protocol */ #define TB_PATH_MIN_HOPID … /* * 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 … /* Possible wake types */ #define TB_WAKE_ON_CONNECT … #define TB_WAKE_ON_DISCONNECT … #define TB_WAKE_ON_USB4 … #define TB_WAKE_ON_USB3 … #define TB_WAKE_ON_PCIE … #define TB_WAKE_ON_DP … /* CL states */ #define TB_CL0S … #define TB_CL1 … #define TB_CL2 … /** * 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 { … }; static inline void *tb_priv(struct tb *tb) { … } #define TB_AUTOSUSPEND_DELAY … /* 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) { … } /** * 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) { … } static inline u64 tb_route(const struct tb_switch *sw) { … } static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw) { … } static inline const char *tb_width_name(enum tb_link_width width) { … } /** * 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) { … } static inline bool tb_port_is_null(const struct tb_port *port) { … } static inline bool tb_port_is_nhi(const struct tb_port *port) { … } static inline bool tb_port_is_pcie_down(const struct tb_port *port) { … } static inline bool tb_port_is_pcie_up(const struct tb_port *port) { … } static inline bool tb_port_is_dpin(const struct tb_port *port) { … } static inline bool tb_port_is_dpout(const struct tb_port *port) { … } static inline bool tb_port_is_usb3_down(const struct tb_port *port) { … } static inline bool tb_port_is_usb3_up(const struct tb_port *port) { … } static inline int tb_sw_read(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { … } static inline int tb_sw_write(struct tb_switch *sw, const void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { … } static inline int tb_port_read(struct tb_port *port, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { … } static inline int tb_port_write(struct tb_port *port, const void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { … } #define tb_err(tb, fmt, arg...) … #define tb_WARN(tb, fmt, arg...) … #define tb_warn(tb, fmt, arg...) … #define tb_info(tb, fmt, arg...) … #define tb_dbg(tb, fmt, arg...) … #define __TB_SW_PRINT(level, sw, fmt, arg...) … #define tb_sw_WARN(sw, fmt, arg...) … #define tb_sw_warn(sw, fmt, arg...) … #define tb_sw_info(sw, fmt, arg...) … #define tb_sw_dbg(sw, fmt, arg...) … #define __TB_PORT_PRINT(level, _port, fmt, arg...) … #define tb_port_WARN(port, fmt, arg...) … #define tb_port_warn(port, fmt, arg...) … #define tb_port_info(port, fmt, arg...) … #define tb_port_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) { … } static inline void tb_domain_put(struct tb *tb) { … } 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); read_block_fn; write_block_fn; 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) … static inline struct tb_switch *tb_switch_get(struct tb_switch *sw) { … } static inline void tb_switch_put(struct tb_switch *sw) { … } static inline bool tb_is_switch(const struct device *dev) { … } static inline struct tb_switch *tb_to_switch(const struct device *dev) { … } static inline struct tb_switch *tb_switch_parent(struct tb_switch *sw) { … } /** * 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) { … } /** * tb_switch_depth() - Returns depth of the connected router * @sw: Router */ static inline int tb_switch_depth(const struct tb_switch *sw) { … } static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_eagle_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_cactus_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_falcon_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_alpine_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_titan_ridge(const struct tb_switch *sw) { … } static inline bool tb_switch_is_tiger_lake(const struct tb_switch *sw) { … } /** * 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) { … } 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) { … } /** * 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) { … } 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) { … } 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) { … } static inline bool tb_port_use_credit_allocation(const struct tb_port *port) { … } /** * 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) … /** * 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) … 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) … 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) { … } /** * 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) { … } 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) { … } /** * 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) { … } 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) { … } static inline struct tb_retimer *tb_to_retimer(struct device *dev) { … } /** * 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) { … } /** * 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) { … } 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); 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 { … }; 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); int usb4_port_margining_caps(struct tb_port *port, enum usb4_sb_target target, u8 index, u32 *caps); int usb4_port_hw_margin(struct tb_port *port, enum usb4_sb_target target, u8 index, unsigned int lanes, unsigned int ber_level, bool timing, bool right_high, u32 *results); int usb4_port_sw_margin(struct tb_port *port, enum usb4_sb_target target, u8 index, unsigned int lanes, bool timing, bool right_high, u32 counter); 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) { … } static inline struct usb4_port *tb_to_usb4_port_device(struct device *dev) { … } 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); static inline bool usb4_port_device_is_offline(const struct usb4_port *usb4) { … } 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
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