Changeset 7e1b130 in mainline for uspace/lib/drv/include/usbhc_iface.h

Timestamp:

2011-12-23T18:13:33Z (14 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

3819ce5, b39eb79, f0b74b2

Parents:

2f0dd2a (diff), 153cc76a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

USB branch changes.

+ USB device drivers use single async session to host controller, this session (represented by usb_hc_connection_t) is used for both HC requests and to back usb device connection.
+ Pipe locking was removed. Reference counting was moved to usb_hc_connection_t. Every read/write operation uses separate parallel exchange thus any contention is resolved on hc side.

• async_sess_t setup using EXCHANGE_PARALLEL uses one extra phone (session phone, each exch creates its own), thus the number of phones used by usb dvice driver might increase. Possible solutions are: make read/write calls atomic (all other calls are atomic) and use EXCHANGE_ATOMIC, any other solution provided by changes to async_sess_t.

File:

• uspace/lib/drv/include/usbhc_iface.h (modified) (3 diffs)

uspace/lib/drv/include/usbhc_iface.h

@@ -1 +1 @@
 /*
  * Copyright (c) 2010 Vojtech Horky
+ * Copyright (c) 2011 Jan Vesely
  * All rights reserved.
  *
@@ -26 +27 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
 /** @addtogroup libdrv
  * @addtogroup usb
@@ -46 +46 @@
 int usbhc_get_handle(async_exch_t *, usb_address_t, devman_handle_t *);
 int usbhc_release_address(async_exch_t *, usb_address_t);
-int usbhc_register_endpoint(async_exch_t *, usb_address_t,  usb_endpoint_t,
+int usbhc_register_endpoint(async_exch_t *, usb_address_t, usb_endpoint_t,
     usb_transfer_type_t, usb_direction_t, size_t, unsigned int);
 int usbhc_unregister_endpoint(async_exch_t *, usb_address_t, usb_endpoint_t,