diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 31521c531715..a998b3a251d5 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -15,6 +15,24 @@ #include "dma_port.h" /** + * enum tb_security_level - Thunderbolt security level + * @TB_SECURITY_NONE: No security, legacy mode + * @TB_SECURITY_USER: User approval required at minimum + * @TB_SECURITY_SECURE: One time saved key required at minimum + * @TB_SECURITY_DPONLY: Only tunnel Display port (and USB) + */ +enum tb_security_level { + TB_SECURITY_NONE, + TB_SECURITY_USER, + TB_SECURITY_SECURE, + TB_SECURITY_DPONLY, +}; + +#define TB_SWITCH_KEY_SIZE 32 +/* Each physical port contains 2 links on modern controllers */ +#define TB_SWITCH_LINKS_PER_PHY_PORT 2 + +/** * struct tb_switch - a thunderbolt switch * @dev: Device for the switch * @config: Switch configuration @@ -33,6 +51,19 @@ * @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) + * @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; @@ -50,6 +81,14 @@ struct tb_switch { int cap_plug_events; bool is_unplugged; u8 *drom; + 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; }; /** @@ -121,19 +160,33 @@ struct tb_path { /** * 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 * @handle_event: Handle thunderbolt event + * @approve_switch: Approve switch + * @add_switch_key: Add key to switch + * @challenge_switch_key: Challenge switch using key */ 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); void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type, const void *buf, size_t size); + 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); }; /** @@ -147,6 +200,7 @@ struct tb_cm_ops { * @root_switch: Root switch of this domain * @cm_ops: Connection manager specific operations vector * @index: Linux assigned domain number + * @security_level: Current security level * @privdata: Private connection manager specific data */ struct tb { @@ -158,6 +212,7 @@ struct tb { struct tb_switch *root_switch; const struct tb_cm_ops *cm_ops; int index; + enum tb_security_level security_level; unsigned long privdata[0]; }; @@ -188,6 +243,16 @@ 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) { @@ -266,6 +331,7 @@ static inline int tb_port_write(struct tb_port *port, const void *buffer, #define tb_port_info(port, fmt, arg...) \ __TB_PORT_PRINT(tb_info, port, fmt, ##arg) +struct tb *icm_probe(struct tb_nhi *nhi); struct tb *tb_probe(struct tb_nhi *nhi); extern struct bus_type tb_bus_type; @@ -280,6 +346,11 @@ 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_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); static inline void tb_domain_put(struct tb *tb) { @@ -296,6 +367,14 @@ 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_be *uuid); + +static inline unsigned int tb_switch_phy_port_from_link(unsigned int link) +{ + return (link - 1) / TB_SWITCH_LINKS_PER_PHY_PORT; +} static inline void tb_switch_put(struct tb_switch *sw) { |