Changeset 7e1b130 in mainline for uspace/app/usbinfo/usbinfo.h


Ignore:
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:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/app/usbinfo/usbinfo.h

    r2f0dd2a r7e1b130  
    4444
    4545typedef struct {
     46        usb_hc_connection_t hc_conn;
     47        usb_device_connection_t wire;
    4648        usb_pipe_t ctrl_pipe;
    47         usb_device_connection_t wire;
    4849        usb_standard_device_descriptor_t device_descriptor;
    4950        uint8_t *full_configuration_descriptor;
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