diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 131 |
1 files changed, 123 insertions, 8 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 2eb2bcd3cca3..a413d55b5f8b 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -18,8 +18,17 @@ #include "ctl.h" #include "dma_port.h" +#define NVM_MIN_SIZE SZ_32K +#define NVM_MAX_SIZE SZ_512K + +/* Intel specific NVM offsets */ +#define NVM_DEVID 0x05 +#define NVM_VERSION 0x08 +#define NVM_FLASH_SIZE 0x45 + /** - * struct tb_switch_nvm - Structure holding switch NVM information + * 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 @@ -29,9 +38,14 @@ * 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 + * @authenticating: The device is authenticating the new NVM + * @flushed: The image has been flushed to the storage area + * + * The user of this structure needs to handle serialization of possible + * concurrent access. */ -struct tb_switch_nvm { +struct tb_nvm { + struct device *dev; u8 major; u8 minor; int id; @@ -40,6 +54,7 @@ struct tb_switch_nvm { void *buf; size_t buf_data_size; bool authenticating; + bool flushed; }; #define TB_SWITCH_KEY_SIZE 32 @@ -97,6 +112,7 @@ struct tb_switch_tmu { * @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 link (1 or 2) + * @link_usb4: Upstream link is USB4 * @generation: Switch Thunderbolt generation * @cap_plug_events: Offset to the plug events capability (%0 if not found) * @cap_lc: Offset to the link controller capability (%0 if not found) @@ -117,6 +133,7 @@ struct tb_switch_tmu { * @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 * * When the switch is being added or removed to the domain (other * switches) you need to have domain lock held. @@ -136,12 +153,13 @@ struct tb_switch { const char *device_name; unsigned int link_speed; unsigned int link_width; + bool link_usb4; unsigned int generation; int cap_plug_events; int cap_lc; bool is_unplugged; u8 *drom; - struct tb_switch_nvm *nvm; + struct tb_nvm *nvm; bool no_nvm_upgrade; bool safe_mode; bool boot; @@ -154,6 +172,7 @@ struct tb_switch { u8 link; u8 depth; struct completion rpm_complete; + unsigned long quirks; }; /** @@ -196,6 +215,28 @@ struct tb_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) + * @auth_status: Status of last NVM authentication + */ +struct tb_retimer { + struct device dev; + struct tb *tb; + u8 index; + u32 vendor; + u32 device; + struct tb_port *port; + struct tb_nvm *nvm; + u32 auth_status; +}; + +/** * 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 @@ -286,7 +327,11 @@ struct tb_path { /* HopIDs 0-7 are reserved by the Thunderbolt protocol */ #define TB_PATH_MIN_HOPID 8 -#define TB_PATH_MAX_HOPS 7 +/* + * 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 @@ -534,11 +579,11 @@ 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_retimer_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); @@ -571,6 +616,15 @@ static inline void tb_domain_put(struct tb *tb) put_device(&tb->dev); } +struct tb_nvm *tb_nvm_alloc(struct device *dev); +int tb_nvm_add_active(struct tb_nvm *nvm, size_t size, 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, size_t size, + nvmem_reg_write_t reg_write); +void tb_nvm_free(struct tb_nvm *nvm); +void tb_nvm_exit(void); + 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, @@ -741,6 +795,20 @@ 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_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))) + +int tb_port_get_link_speed(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_port_find_cap(struct tb_port *port, enum tb_port_cap cap); @@ -769,8 +837,8 @@ 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); -bool tb_path_switch_on_path(const struct tb_path *path, - const struct tb_switch *sw); +bool tb_path_port_on_path(const struct tb_path *path, + const struct tb_port *port); int tb_drom_read(struct tb_switch *sw); int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid); @@ -783,6 +851,7 @@ 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) { @@ -812,6 +881,21 @@ void tb_xdomain_remove(struct tb_xdomain *xd); struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link, u8 depth); +int tb_retimer_scan(struct tb_port *port); +void tb_retimer_remove_all(struct tb_port *port); + +static inline bool tb_is_retimer(const struct device *dev) +{ + return dev->type == &tb_retimer_type; +} + +static inline struct tb_retimer *tb_to_retimer(struct device *dev) +{ + if (tb_is_retimer(dev)) + return container_of(dev, struct tb_retimer, dev); + return NULL; +} + int usb4_switch_setup(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, @@ -835,4 +919,35 @@ struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw, const struct tb_port *port); int usb4_port_unlock(struct tb_port *port); +int usb4_port_enumerate_retimers(struct tb_port *port); + +int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf, + u8 size); +int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg, + const void *buf, u8 size); +int usb4_port_retimer_is_last(struct tb_port *port, u8 index); +int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index); +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_actual_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); + +/* keep link controller awake during update */ +#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0) + +void tb_check_quirks(struct tb_switch *sw); + #endif |