Re: More on the IDE multiwrite problem

Jes Sorensen (Jes.Sorensen@cern.ch)
18 Dec 1999 21:57:38 +0100


>>>>> "Mark" == Mark Lord <mlord@pobox.com> writes:

Mark> Jes Sorensen wrote: ...
>> Isn't there a way to disable the interrupt in the IDE controller's
>> registers? Using disable_irq is nasty since many IDE controllers,
>> in particular on non x86, run with shared interrupts.

Mark> There is no standard way to do it. Each IDE chip does it's own
Mark> thing for interrupt enable/disable. There is a way to do it at
Mark> the drive, but the interrupt is supposed to be enabled when we
Mark> issue the command, or else we might miss it later. -- Mark Lord
Mark> Real-Time Remedies Inc. mlord@pobox.com

Then I would suggest to have the low level drivers register a function
that does the chipset specific stuff. The generic IDE code really
shouldn't know anything about disable_irq()/enable_irq() nor try to
use them.

Jes

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