diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 1cb5009195f9..43bc4f490021 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -270,6 +270,19 @@ static inline struct 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. + */ +static inline bool tb_is_upstream_port(const struct tb_port *port) +{ + const struct tb_port *upstream_port = tb_upstream_port(port->sw); + return port == upstream_port || port->dual_link_port == upstream_port; +} + static inline u64 tb_route(struct tb_switch *sw) { return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo; @@ -285,6 +298,24 @@ static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw) return &sw->ports[port]; } +/** + * 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) +{ + if (tb_is_upstream_port(port)) + return false; + if (!port->remote) + return false; + if (port->dual_link_port && port->link_nr) + return false; + + return true; +} + static inline int tb_sw_read(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { @@ -489,11 +520,6 @@ 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 * |