| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mika Westerberg | 1042 | 52.00% | 16 | 50.00% |
| Andreas Noever | 941 | 46.96% | 11 | 34.38% |
| Radion Mirchevsky | 14 | 0.70% | 1 | 3.12% |
| Yehezkel Bernat | 3 | 0.15% | 1 | 3.12% |
| Christoph Hellwig | 2 | 0.10% | 1 | 3.12% |
| Greg Kroah-Hartman | 1 | 0.05% | 1 | 3.12% |
| Lukas Wunner | 1 | 0.05% | 1 | 3.12% |
| Total | 2004 | 32 |
/* 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/nvmem-provider.h> #include <linux/pci.h> #include <linux/thunderbolt.h> #include <linux/uuid.h> #include "tb_regs.h" #include "ctl.h" #include "dma_port.h" /** * struct tb_switch_nvm - Structure holding switch NVM information * @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 * @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_size: Number of bytes actually consumed by the new NVM * image * @authenticating: The switch is authenticating the new NVM */ struct tb_switch_nvm { u8 major; u8 minor; int id; struct nvmem_device *active; struct nvmem_device *non_active; void *buf; size_t buf_data_size; bool authenticating; }; #define TB_SWITCH_KEY_SIZE 32 /** * 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. * @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) * @generation: Switch Thunderbolt generation * @cap_plug_events: Offset to the plug events 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 * @work: Work used to automatically authorize a switch * @security_level: Switch supported security level * @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) * * When the switch is being added or removed to the domain (other * switches) you need to have domain lock held. For switch authorization * internal switch_lock is enough. */ struct tb_switch { struct device dev; struct tb_regs_switch_header config; struct tb_port *ports; struct tb_dma_port *dma_port; struct tb *tb; u64 uid; uuid_t *uuid; u16 vendor; u16 device; const char *vendor_name; const char *device_name; unsigned int generation; int cap_plug_events; bool is_unplugged; u8 *drom; struct tb_switch_nvm *nvm; bool no_nvm_upgrade; bool safe_mode; bool boot; bool rpm; unsigned int authorized; struct work_struct work; enum tb_security_level security_level; u8 *key; u8 connection_id; u8 connection_key; u8 link; u8 depth; }; /** * 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 * @port: Port number on switch * @disabled: Disabled by eeprom * @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. */ struct tb_port { struct tb_regs_port_header config; struct tb_switch *sw; struct tb_port *remote; struct tb_xdomain *xdomain; int cap_phy; u8 port; bool disabled; struct tb_port *dual_link_port; u8 link_nr:1; }; /** * struct tb_path_hop - routing information for a tb_path * * 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. * * 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; /* write -1 to disable counters for this hop. */ int next_hop_index; }; /** * enum tb_path_port - path options mask */ enum tb_path_port { TB_PATH_NONE = 0, TB_PATH_SOURCE = 1, /* activate on the first hop (out of src) */ TB_PATH_INTERNAL = 2, /* activate on other hops (not the first/last) */ TB_PATH_DESTINATION = 4, /* activate on the last hop (into dst) */ TB_PATH_ALL = 7, }; /** * struct tb_path - a unidirectional path between two ports * * A path consists of a number of hops (see 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; int nfc_credits; /* non flow controlled credits */ 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; int priority:3; int weight:4; bool drop_packages; bool activated; struct tb_path_hop *hops; int path_length; /* number of hops */ }; /** * 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 * @suspend_noirq: Connection manager specific suspend_noirq * @resume_noirq: Connection manager specific resume_noirq * @suspend: Connection manager specific suspend * @complete: Connection manager specific complete * @runtime_suspend: Connection manager specific runtime_suspend * @runtime_resume: Connection manager specific runtime_resume * @handle_event: Handle thunderbolt event * @get_boot_acl: Get boot ACL list * @set_boot_acl: Set boot ACL list * @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 */ struct tb_cm_ops { int (*driver_ready)(struct tb *tb); int (*start)(struct tb *tb); void (*stop)(struct tb *tb); int (*suspend_noirq)(struct tb *tb); int (*resume_noirq)(struct tb *tb); int (*suspend)(struct tb *tb); void (*complete)(struct tb *tb); int (*runtime_suspend)(struct tb *tb); int (*runtime_resume)(struct tb *tb); 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 (*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 (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd); }; 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]; } static inline u64 tb_route(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 int tb_sw_read(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { 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, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { 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) { 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) { 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 { \ 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 { \ struct tb_port *__port = (_port); \ level(__port->sw->tb, "%llx:%x: " 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 struct device_type tb_domain_type; extern struct device_type tb_switch_type; int tb_domain_init(void); void tb_domain_exit(void); void tb_switch_exit(void); int tb_xdomain_init(void); void tb_xdomain_exit(void); struct tb *tb_domain_alloc(struct tb_nhi *nhi, size_t privsize); int tb_domain_add(struct tb *tb); 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); 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_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 tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd); int tb_domain_disconnect_all_paths(struct tb *tb); static inline void tb_domain_put(struct tb *tb) { put_device(&tb->dev); } 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_add(struct tb_switch *sw); void tb_switch_remove(struct tb_switch *sw); void tb_switch_suspend(struct tb_switch *sw); int tb_switch_resume(struct tb_switch *sw); int tb_switch_reset(struct tb *tb, u64 route); void tb_sw_set_unplugged(struct tb_switch *sw); struct tb_switch *get_switch_at_route(struct tb_switch *sw, u64 route); 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); 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(struct device *dev) { if (tb_is_switch(dev)) return container_of(dev, struct tb_switch, dev); return NULL; } 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_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec); int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap); struct tb_path *tb_path_alloc(struct tb *tb, int num_hops); void tb_path_free(struct tb_path *path); int tb_path_activate(struct tb_path *path); void tb_path_deactivate(struct tb_path *path); bool tb_path_is_invalid(struct tb_path *path); int tb_drom_read(struct tb_switch *sw); int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid); static inline int tb_route_length(u64 route) { return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT; } static inline bool tb_is_upstream_port(struct tb_port *port) { return port == tb_upstream_port(port->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. */ 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_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); #endif
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