/* 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; conststruct tb_nvm_vendor_ops *vops;
};
/** * 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; constchar *vendor_name; constchar *device_name; unsignedint link_speed; enum tb_link_width link_width; enum tb_link_width preferred_link_width; bool link_usb4; unsignedint 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; unsignedint 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; unsignedlong quirks; bool credit_allocation; unsignedint max_usb3_credits; unsignedint min_dp_aux_credits; unsignedint min_dp_main_credits; unsignedint max_pcie_credits; unsignedint max_dma_credits; unsignedint 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; unsignedint total_credits; unsignedint ctl_credits; unsignedint dma_credits; struct tb_bandwidth_group *group; struct list_head group_list; unsignedint 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; unsignedint initial_credits; unsignedint 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; constchar *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;
unsignedint 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)
/** * 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, constvoid *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, constvoid *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);
};
/** * 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.
*/ staticinlinestruct 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.
*/ staticinlinebool tb_is_upstream_port(conststruct tb_port *port)
{ conststruct tb_port *upstream_port = tb_upstream_port(port->sw); return port == upstream_port || port->dual_link_port == upstream_port;
}
port = route >> (sw->config.depth * 8); if (WARN_ON(port > sw->config.max_port_number)) return NULL; return &sw->ports[port];
}
staticinlineconstchar *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.
*/ staticinlinebool tb_port_has_remote(conststruct tb_port *port)
{ if (tb_is_upstream_port(port)) returnfalse; if (!port->remote) returnfalse; if (port->dual_link_port && port->link_nr) returnfalse;
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);
/** * 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.
*/ staticinlinevoid 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, unsignedint 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);
/** * 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)++)
staticinlinebool tb_switch_is_cactus_ridge(conststruct 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: returntrue;
}
} returnfalse;
}
staticinlinebool tb_switch_is_falcon_ridge(conststruct 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: returntrue;
}
} returnfalse;
}
staticinlinebool tb_switch_is_alpine_ridge(conststruct 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: returntrue;
}
} returnfalse;
}
staticinlinebool tb_switch_is_titan_ridge(conststruct 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: returntrue;
}
} returnfalse;
}
staticinlinebool tb_switch_is_tiger_lake(conststruct 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: returntrue;
}
} returnfalse;
}
/** * 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).
*/ staticinlinebool tb_switch_is_icm(conststruct 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);
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.
*/ staticinlinebool tb_switch_tmu_is_configured(conststruct 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).
*/ staticinlinebool tb_switch_tmu_is_enabled(conststruct tb_switch *sw)
{ return sw->tmu.mode != TB_SWITCH_TMU_MODE_OFF &&
sw->tmu.mode == sw->tmu.mode_request;
}
int tb_switch_clx_init(struct tb_switch *sw); int tb_switch_clx_enable(struct tb_switch *sw, unsignedint 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.
*/ staticinlinebool tb_switch_clx_is_enabled(conststruct tb_switch *sw, unsignedint 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.
*/ staticinlinebool
tb_port_path_direction_downstream(conststruct tb_port *src, conststruct tb_port *dst)
{ return src->sw->config.depth < dst->sw->config.depth;
}
/** * 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, unsignedint 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, unsignedint 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, unsignedint offset); int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap); int tb_port_next_cap(struct tb_port *port, unsignedint 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, unsignedint video, unsignedint aux_tx, unsignedint 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, constchar *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, constchar *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(conststruct tb_path *path, conststruct 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, unsignedint 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);
/** * 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.
*/ staticinline u64 tb_downstream_route(struct tb_port *port)
{ return tb_route(port->sw)
| ((u64) port->port << (port->sw->config.depth * 8));
}
/** * 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.
*/ staticinlineunsignedint usb4_switch_version(conststruct 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.
*/ staticinlinebool tb_switch_is_usb4(conststruct 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, unsignedint 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, unsignedint 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, unsignedint address, void *buf,
size_t size); int usb4_switch_nvm_set_offset(struct tb_switch *sw, unsignedint address); int usb4_switch_nvm_write(struct tb_switch *sw, unsignedint address, constvoid *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, conststruct tb_port *port); struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw, conststruct 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,
};
/** * 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,
};
/** * 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_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, unsignedint address); int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index, unsignedint address, constvoid *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, unsignedint 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);
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