From: Albert Lee <albertcc@tw.ibm.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Tejun Heo <htejun@gmail.com>,
Linux IDE <linux-ide@vger.kernel.org>
Subject: [PATCH 0/10] libata: irq_on/off restructuring
Date: Wed, 04 Jul 2007 16:38:47 +0800 [thread overview]
Message-ID: <468B5C97.1000803@tw.ibm.com> (raw)
For ATA, there are two levels of mechanism available to turn irq on/off.
- device level: nIEN bit in the control register. This masks INTRQ from the device.
- host adapter level: some controller can mask out per-port irq from the host adapter.
Currently various parts of libata deal with irq on/off.
ex. tf_load() can alter the nIEN bit.
ex. irq_on() also alters the device level nIEN bit.
ex. freeze()/thaw() deal with the host adapter irq mask.
It seems these irq on/off codes could be better structured.
Patches against libata-dev tree for your review/advice, thanks.
1/10: remove irq_on from ata_bus_reset() and ata_std_postreset()
2/10: add ->irq_off() for symmetry
3/10: implement ->irq_off() in LLDDs
4/10: use irq_off from bmdma_freeze()
5/10: use freeze()/thaw() for polling
6/10: add freeze()/thaw() to old EH LLDDs
7/10: pdc_freeze() semantic change
8/10: remove writing of tf->ctl from ata_tf_load()
9/10: integrate freeze()/thaw() with irq_on/off.
10/10: integrate freeze/thaw with irq_on/off in LLDDs
next reply other threads:[~2007-07-04 8:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-04 8:38 Albert Lee [this message]
2007-07-04 8:43 ` [PATCH 1/10] libata: remove irq_on from ata_bus_reset() and ata_std_postreset() Albert Lee
2007-07-05 10:18 ` Tejun Heo
2007-07-04 8:46 ` [PATCH 2/10] libata: add irq_off Albert Lee
2007-07-04 8:49 ` [PATCH 3/10] libata: implement ->irq_off in LLDDs Albert Lee
2007-07-04 8:52 ` [PATCH 4/10] libata: call irq_off from bmdma_freeze() Albert Lee
2007-07-04 8:57 ` [PATCH 5/10] libata: use freeze/thaw for polling Albert Lee
2007-07-04 8:59 ` [PATCH 6/10] libata: add freeze/thaw to old EH LLDDs Albert Lee
2007-07-04 9:01 ` [PATCH 7/10] libata: pdc_freeze() semantic change Albert Lee
2007-07-04 9:03 ` [PATCH 8/10] libata: remove writing of tf->ctl from ata_tf_load() Albert Lee
2007-07-04 19:09 ` Mark Lord
2007-07-05 2:43 ` Albert Lee
2007-07-05 10:40 ` Tejun Heo
2007-07-04 9:16 ` [PATCH 9/10] libata: Integrate freeze/thaw with irq_on/off Albert Lee
2007-07-04 9:29 ` [PATCH 10/10] libata: Integrate freeze/thaw with irq_on/off in LLDDs Albert Lee
2007-07-05 10:48 ` [PATCH 0/10] libata: irq_on/off restructuring Tejun Heo
2007-07-06 9:23 ` Albert Lee
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