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* Wait slightly longer before falling into passive poll mode.

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* Cause scheduler invokation when we handled an interrupt as the transfering
  thread can continue immediately. This brings small block transfer rates to
  a comparable level to the old IDE bus_manager. For large block transfers there
  is no speed difference at all.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30257 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz 2009-04-19 00:57:57 +00:00
parent 5ea617fad1
commit 2c08a10439
1 changed files with 2 additions and 2 deletions
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4
src/add-ons/kernel/bus_managers/ata/ATAChannel.cpp
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@ -379,7 +379,7 @@ ATAChannel::Wait(uint8 setBits, uint8 clearedBits, uint32 flags,
// The device may be ready almost immediatelly. If it isn't,
// poll often during the first 20ms, otherwise poll lazyly.
if (elapsedTime < 500)
if (elapsedTime < 1000)
spin(1);
else if (elapsedTime < 20000)
snooze(1000);
@ -692,7 +692,7 @@ ATAChannel::Interrupt(uint8 status)
}
fInterruptCondition.NotifyAll();
return B_HANDLED_INTERRUPT;
return B_INVOKE_SCHEDULER;
}