[PATCH] sata_sil: new interrupt handler

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The DMA complete bit of these controllers reflects ATA IRQ status
while no DMA command is in progress.  So, we can tell whether the
controller is raising an interrupt or not in deterministic manner.
This patch gives sata_sil its own interrupt handler which behaves much
better than the original one in terms of error detection and handling.
This change is also necessary for later hotplug support.

Further improvements are possible, in both 2 and 4 ports versions, we
can get all status with only one readl and using custom bmdma
operations can further cut down register accesses.

Signed-off-by: Tejun Heo <htejun@gmail.com>

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Tejun Heo 2006-05-31 18:27:55 +09:00

parent 20888d8368

commit cbe88fbc72

1 changed files with 91 additions and 1 deletions

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92

drivers/scsi/sata_sil.c

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