diff options
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/icm.c | 136 |
1 files changed, 87 insertions, 49 deletions
diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c index 6d7f8262f864..6798516d6474 100644 --- a/drivers/thunderbolt/icm.c +++ b/drivers/thunderbolt/icm.c @@ -374,6 +374,57 @@ static int icm_fr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd) return 0; } +static void add_switch(struct tb_switch *parent_sw, u64 route, + const uuid_t *uuid, u8 connection_id, u8 connection_key, + u8 link, u8 depth, enum tb_security_level security_level, + bool authorized) +{ + struct tb_switch *sw; + + sw = tb_switch_alloc(parent_sw->tb, &parent_sw->dev, route); + if (!sw) + return; + + sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL); + sw->connection_id = connection_id; + sw->connection_key = connection_key; + sw->link = link; + sw->depth = depth; + sw->authorized = authorized; + sw->security_level = security_level; + + /* Link the two switches now */ + tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); + tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw); + + if (tb_switch_add(sw)) { + tb_port_at(tb_route(sw), parent_sw)->remote = NULL; + tb_switch_put(sw); + return; + } +} + +static void update_switch(struct tb_switch *parent_sw, struct tb_switch *sw, + u64 route, u8 connection_id, u8 connection_key, + u8 link, u8 depth) +{ + /* Disconnect from parent */ + tb_port_at(tb_route(sw), parent_sw)->remote = NULL; + /* Re-connect via updated port*/ + tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); + + /* Update with the new addressing information */ + sw->config.route_hi = upper_32_bits(route); + sw->config.route_lo = lower_32_bits(route); + sw->connection_id = connection_id; + sw->connection_key = connection_key; + sw->link = link; + sw->depth = depth; + + /* This switch still exists */ + sw->is_unplugged = false; +} + static void remove_switch(struct tb_switch *sw) { struct tb_switch *parent_sw; @@ -383,6 +434,31 @@ static void remove_switch(struct tb_switch *sw) tb_switch_remove(sw); } +static void add_xdomain(struct tb_switch *sw, u64 route, + const uuid_t *local_uuid, const uuid_t *remote_uuid, + u8 link, u8 depth) +{ + struct tb_xdomain *xd; + + xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, local_uuid, remote_uuid); + if (!xd) + return; + + xd->link = link; + xd->depth = depth; + + tb_port_at(route, sw)->xdomain = xd; + + tb_xdomain_add(xd); +} + +static void update_xdomain(struct tb_xdomain *xd, u64 route, u8 link) +{ + xd->link = link; + xd->route = route; + xd->is_unplugged = false; +} + static void remove_xdomain(struct tb_xdomain *xd) { struct tb_switch *sw; @@ -397,6 +473,7 @@ icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) { const struct icm_fr_event_device_connected *pkg = (const struct icm_fr_event_device_connected *)hdr; + enum tb_security_level security_level; struct tb_switch *sw, *parent_sw; struct icm *icm = tb_priv(tb); bool authorized = false; @@ -409,6 +486,8 @@ icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> ICM_LINK_INFO_DEPTH_SHIFT; authorized = pkg->link_info & ICM_LINK_INFO_APPROVED; + security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> + ICM_FLAGS_SLEVEL_SHIFT; if (pkg->link_info & ICM_LINK_INFO_REJECTED) { tb_info(tb, "switch at %u.%u was rejected by ICM firmware because topology limit exceeded\n", @@ -441,16 +520,8 @@ icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) */ if (sw->depth == depth && sw_phy_port == phy_port && !!sw->authorized == authorized) { - tb_port_at(tb_route(sw), parent_sw)->remote = NULL; - tb_port_at(route, parent_sw)->remote = - tb_upstream_port(sw); - sw->config.route_hi = upper_32_bits(route); - sw->config.route_lo = lower_32_bits(route); - sw->connection_id = pkg->connection_id; - sw->connection_key = pkg->connection_key; - sw->link = link; - sw->depth = depth; - sw->is_unplugged = false; + update_switch(parent_sw, sw, route, pkg->connection_id, + pkg->connection_key, link, depth); tb_switch_put(sw); return; } @@ -497,30 +568,10 @@ icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) return; } - sw = tb_switch_alloc(tb, &parent_sw->dev, route); - if (!sw) { - tb_switch_put(parent_sw); - return; - } + add_switch(parent_sw, route, &pkg->ep_uuid, pkg->connection_id, + pkg->connection_key, link, depth, security_level, + authorized); - sw->uuid = kmemdup(&pkg->ep_uuid, sizeof(pkg->ep_uuid), GFP_KERNEL); - sw->connection_id = pkg->connection_id; - sw->connection_key = pkg->connection_key; - sw->link = link; - sw->depth = depth; - sw->authorized = authorized; - sw->security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> - ICM_FLAGS_SLEVEL_SHIFT; - - /* Link the two switches now */ - tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); - tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw); - - ret = tb_switch_add(sw); - if (ret) { - tb_port_at(tb_route(sw), parent_sw)->remote = NULL; - tb_switch_put(sw); - } tb_switch_put(parent_sw); } @@ -591,9 +642,7 @@ icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) phy_port = phy_port_from_route(route, depth); if (xd->depth == depth && xd_phy_port == phy_port) { - xd->link = link; - xd->route = route; - xd->is_unplugged = false; + update_xdomain(xd, route, link); tb_xdomain_put(xd); return; } @@ -643,19 +692,8 @@ icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) return; } - xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, - &pkg->local_uuid, &pkg->remote_uuid); - if (!xd) { - tb_switch_put(sw); - return; - } - - xd->link = link; - xd->depth = depth; - - tb_port_at(route, sw)->xdomain = xd; - - tb_xdomain_add(xd); + add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, link, + depth); tb_switch_put(sw); } |