Changeset 49e62998 in mainline for uspace/drv/bus/usb/xhci/rh.h

Timestamp:

2018-01-11T23:06:57Z (6 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

50be3c6

Parents:

f3baab1

git-author:

Ondřej Hlavatý <aearsis@…> (2018-01-11 23:01:08)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-01-11 23:06:57)

Message:

xhci: defer roothub events processing

There are two new generic mechanisms, which are used in only one
instance.

First one is a simple wrapper for roothub event handlers that should run
in separate fibril. The usage can be seen at line 337, for example. The
mechanism just passes arguments to a newly created fibril.

The second is a bit more complex, and its purpose is to broadcast roothub
events to all fibrils that could wait for it. It's used to wait for port
reset complete at USB 2 ports. See rh_port_reset_sync.

Sorry for naming both mechanisms "rh_event", which could create
a confusion.

File:

• uspace/drv/bus/usb/xhci/rh.h (modified) (2 diffs)

uspace/drv/bus/usb/xhci/rh.h

@@ -75 +75 @@
         /* Device pointers connected to RH ports or NULL. (size is `max_ports`) */
         xhci_device_t **devices_by_port;
+
+        /* Roothub events. */
+        fibril_mutex_t event_guard;
+        fibril_condvar_t event_ready, event_handled;
+        unsigned event_readers_waiting, event_readers_to_go;
+        struct {
+                uint8_t port_id;
+                uint32_t events;
+        } event;
 } xhci_rh_t;
 
@@ -80 +89 @@
 int xhci_rh_fini(xhci_rh_t *);
 const xhci_port_speed_t *xhci_rh_get_port_speed(xhci_rh_t *, uint8_t);
-int xhci_rh_reset_port(xhci_rh_t *, uint8_t);
 
 int xhci_rh_handle_port_status_change_event(xhci_hc_t *, xhci_trb_t *);