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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 15 Apr 2011 16:40:31 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/ahci ahci.c ahci.h
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mav         2011-04-15 16:40:31 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ahci         ahci.c ahci.h 
  Log:
  SVN rev 220657 on 2011-04-15 16:40:31Z by mav
  
  Some changes around hot-plug and interface power-management:
   - use ATA_SE_EXCHANGED (SError.DIAG.X) bit to detect hot-plug events when
  power-management enabled and ATA_SE_PHY_CHANGED (SError.DIAG.N) can't be
  trusted;
   - on controllers supporting staggered spin-up (SS) put unused channels
  into Listen state instead of Off. It should still save some power, but
  allow plug-in events to be detected;
   - on controllers supporting cold presence detection (CPD), when power
  management enabled, use CPD events to detect hot-plug in addition to PHY
  events.
  
  Revision  Changes    Path
  1.59      +62 -14    src/sys/dev/ahci/ahci.c
  1.15      +3 -1      src/sys/dev/ahci/ahci.h