lwn.git/drivers/s390/cio/qdio.c, branch docs-mw

[S390] qdio: new qdio driver.

2008-07-17T15:22:10+00:00

List of major changes: - split qdio driver into several files - seperation of thin interrupt code - improved handling for multiple thin interrupt devices - inbound and outbound processing now always runs in tasklet context - significant less tasklet schedules per interrupt needed - merged qebsm with non-qebsm handling - cleanup qdio interface and added kerneldoc - coding style Reviewed-by: Cornelia Huck Reviewed-by: Utz Bacher Reviewed-by: Ursula Braun Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] cio: Use isc_{register,unregister}.

2008-07-14T08:02:11+00:00

Use the new isc registration functions for all places that need an I/O interruption subclass. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] cio: Allow adapter interrupt handlers per isc.

2008-07-14T08:02:10+00:00

Enhance the adapter interruption API so that device drivers can register a handler for a specific interruption subclass. This will allow different device drivers to move to differently prioritized subclasses in order to avoid congestion. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] cio: Get rid of css_characteristics_avail.

2008-07-14T08:02:10+00:00

Checking for the validity of the css_*_characteristics is superfluous since they stay 0 for non-successful scsc. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] cio: introduce fcx enabled scsw format

2008-07-14T08:02:07+00:00

Extend the scsw data structure to the format required by fcx. Also provide helper functions for easier access to fields which are present in both the traditional as well as the modified format. Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] qdio: Repair timeout handling for qdio_shutdown

2008-07-14T08:01:59+00:00

If qdio shutdown runs in parallel with a channel error, the qdio_timeout_handler might not be triggered. In this case neither state INACTIVE nor state ERR is reached and the following wait_event hangs forever. Solution: do not make use of ccw_device_set_timeout(), but add a timeout to the following wait_event. And make sure, wake_up is called in case of an i/o error on the qdio-device. Signed-off-by: Ursula Braun Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens

[S390] cio: Use strict_strtoul() for attributes.

2008-04-30T11:38:43+00:00

Make parsing of attribute writes handle incorrect input better. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky

proc: remove proc_root from drivers

2008-04-29T15:06:18+00:00

Remove proc_root export. Creation and removal works well if parent PDE is supplied as NULL -- it worked always that way. So, one useless export removed and consistency added, some drivers created PDEs with &proc_root as parent but removed them as NULL and so on. Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-19T02:22:54+00:00

Signed-off-by: Matthew Wilcox

[S390] qdio (new feature): enhancing info-retrieval from QDIO-adapters

2008-04-17T05:47:04+00:00

Next generation of OSA adapters allows retrieval of further self-describing infos. This is the preparational infrastructure patch for further exploitation in the qeth driver. Signed-off-by: Ursula Braun Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens