diff options
Diffstat (limited to 'drivers/thunderbolt/path.c')
| -rw-r--r-- | drivers/thunderbolt/path.c | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/drivers/thunderbolt/path.c b/drivers/thunderbolt/path.c index ee03fd75a472..f9b11dadfbdd 100644 --- a/drivers/thunderbolt/path.c +++ b/drivers/thunderbolt/path.c @@ -19,9 +19,9 @@ static void tb_dump_hop(const struct tb_path_hop *hop, const struct tb_regs_hop tb_port_dbg(port, " In HopID: %d => Out port: %d Out HopID: %d\n", hop->in_hop_index, regs->out_port, regs->next_hop); - tb_port_dbg(port, " Weight: %d Priority: %d Credits: %d Drop: %d\n", - regs->weight, regs->priority, - regs->initial_credits, regs->drop_packages); + tb_port_dbg(port, " Weight: %d Priority: %d Credits: %d Drop: %d PM: %d\n", + regs->weight, regs->priority, regs->initial_credits, + regs->drop_packages, regs->pmps); tb_port_dbg(port, " Counter enabled: %d Counter index: %d\n", regs->counter_enable, regs->counter); tb_port_dbg(port, " Flow Control (In/Eg): %d/%d Shared Buffer (In/Eg): %d/%d\n", @@ -96,7 +96,7 @@ static int tb_path_find_src_hopid(struct tb_port *src, * that the @dst port is the expected one. If it is not, the path can be * cleaned up by calling tb_path_deactivate() before tb_path_free(). * - * Return: Discovered path on success, %NULL in case of failure + * Return: Pointer to &struct tb_path, %NULL in case of failure. */ struct tb_path *tb_path_discover(struct tb_port *src, int src_hopid, struct tb_port *dst, int dst_hopid, @@ -233,7 +233,7 @@ err: * links on the path, prioritizes using @link_nr but takes into account * that the lanes may be bonded. * - * Return: Returns a tb_path on success or NULL on failure. + * Return: Pointer to &struct tb_path, %NULL in case of failure. */ 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, @@ -446,6 +446,21 @@ static int __tb_path_deactivate_hop(struct tb_port *port, int hop_index, return -ETIMEDOUT; } +/** + * tb_path_deactivate_hop() - Deactivate one path in path config space + * @port: Lane or protocol adapter + * @hop_index: HopID of the path to be cleared + * + * This deactivates or clears a single path config space entry at + * @hop_index. + * + * Return: %0 on success, negative errno otherwise. + */ +int tb_path_deactivate_hop(struct tb_port *port, int hop_index) +{ + return __tb_path_deactivate_hop(port, hop_index, true); +} + static void __tb_path_deactivate_hops(struct tb_path *path, int first_hop) { int i, res; @@ -485,7 +500,7 @@ void tb_path_deactivate(struct tb_path *path) * Activate a path starting with the last hop and iterating backwards. The * caller must fill path->hops before calling tb_path_activate(). * - * Return: Returns 0 on success or an error code on failure. + * Return: %0 on success, negative errno otherwise. */ int tb_path_activate(struct tb_path *path) { @@ -535,6 +550,7 @@ int tb_path_activate(struct tb_path *path) hop.next_hop = path->hops[i].next_hop_index; hop.out_port = path->hops[i].out_port->port; hop.initial_credits = path->hops[i].initial_credits; + hop.pmps = path->hops[i].pm_support; hop.unknown1 = 0; hop.enable = 1; @@ -567,10 +583,10 @@ int tb_path_activate(struct tb_path *path) } } path->activated = true; - tb_dbg(path->tb, "path activation complete\n"); + tb_dbg(path->tb, "%s path activation complete\n", path->name); return 0; err: - tb_WARN(path->tb, "path activation failed\n"); + tb_WARN(path->tb, "%s path activation failed\n", path->name); return res; } @@ -578,7 +594,7 @@ err: * tb_path_is_invalid() - check whether any ports on the path are invalid * @path: Path to check * - * Return: Returns true if the path is invalid, false otherwise. + * Return: %true if the path is invalid, %false otherwise. */ bool tb_path_is_invalid(struct tb_path *path) { @@ -599,6 +615,8 @@ bool tb_path_is_invalid(struct tb_path *path) * * Goes over all hops on path and checks if @port is any of them. * Direction does not matter. + * + * Return: %true if port is on the path, %false otherwise. */ bool tb_path_port_on_path(const struct tb_path *path, const struct tb_port *port) { |