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  1. 13 10月, 2007 20 次提交
  3. 21 9月, 2007 1 次提交
  5. 11 9月, 2007 1 次提交
  7. 31 8月, 2007 2 次提交
  9. 23 8月, 2007 2 次提交
  11. 15 8月, 2007 1 次提交
  13. 01 8月, 2007 1 次提交
  15. 20 7月, 2007 8 次提交
    • T
      libata: implement EH fast drain · 5ddf24c5
      由 Tejun Heo 提交于 
      In most cases, when EH is scheduled, all in-flight commands are
aborted causing EH to kick in immediately.  However, in some cases
(especially with PMP), it's unclear which commands are affected by the
error condition and although aborting all in-flight commands work, it
isn't optimal and may cause unnecessary disruption.  On the other
hand, waiting for in-flight commands to drain themselves can take up
to 30seconds.

This patch implements EH fast drain to handle such situations.  It
gives in-flight commands some time to finish up but doesn't wait for
too long.  After EH is scheduled, fast drain timer is started and if
no other completion occurs in ATA_EH_FASTDRAIN_INTERVAL all in-flight
commands are aborted.  If any completion occurred in the interval, the
port is given another interval to finish up itself.

Currently ATA_EH_FASTDRAIN_INTERVAL is 3 secs which should be enough
for finishing up most commands.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      5ddf24c5
    • T
      libata: improve SCSI scan failure handling · 1ae46317
      由 Tejun Heo 提交于 
      SCSI scan may fail due to memory allocation failure even if EH is not
in progress.  Due to use of GFP_ATOMIC in SCSI scan path, allocation
failure isn't too rare especially while probing multiple devices at
once which is the case when a bunch of devices are connected to PMP.

This patch moves SCSI scan failure detetion logic from
ata_scsi_hotplug() to ata_scsi_scan_host() and implement synchronous
scan behavior.  The synchronous path sleeps briefly and repeats SCSI
scan if some devices aren't attached properly.  It contains robust
retry loop to minimize the chance of device misdetection during boot
and falls back to async retry if everything fails.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      1ae46317
    • T
      libata: quickly trigger SATA SPD down after debouncing failed · f1545154
      由 Tejun Heo 提交于 
      Debouncing failure is a good indicator of basic link problem.  Use
-EPIPE to indicate debouncing failure and make ata_eh_reset() invoke
sata_down_spd_limit() if the error occurs during reset.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      f1545154
    • T
      libata: improve SATA PHY speed down logic · 008a7896
      由 Tejun Heo 提交于 
      sata_down_spd_limit() first reads the current SPD from SStatus and
limit the speed to the lower one of one below the current limit or one
below the current SPD in SStatus.  SPD may not be accessible or valid
when SPD down is requested making sata_down_spd_limit() fail when it's
most needed.

This patch makes the current SPD cached after each successful reset
and forces GEN I speed (1.5Gbps) if neither of SStatus or the cached
value is valid, so sata_down_spd_limit() is now guaranteed to lower
the speed limit if lower speed is available.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      008a7896
    • T
      libata: make ->scr_read/write callbacks return error code · da3dbb17
      由 Tejun Heo 提交于 
      Convert ->scr_read/write callbacks to return error code to better
indicate failure.  This will help handling of SCR_NOTIFICATION.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      da3dbb17
    • T
      libata: improve EH report formatting · b64bbc39
      由 Tejun Heo 提交于 
      Requiring LLDs to format multiple error description messages properly
doesn't work too well.  Help LLDs a bit by making ata_ehi_push_desc()
insert ", " on each invocation.  __ata_ehi_push_desc() is the raw
version without the automatic separator.

While at it, make ehi_desc interface proper functions instead of
macros.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      b64bbc39
    • T
      libata: add @is_cmd to ata_tf_to_fis() · 9977126c
      由 Tejun Heo 提交于 
      Add @is_cmd to ata_tf_to_fis().  This controls bit 7 of the second
byte which tells the device whether this H2D FIS is for a command or
not.  This cleans up ahci a bit and will be used by PMP.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      9977126c
    • T
      libata: add ST9160821AS 3.CLF to NONCQ blacklist · 3fb6589c
      由 Tejun Heo 提交于 
      Yay, the first one from Seagate.  3.ALC firmware is okay.  This was
reported by Sam Freed on bugzilla bug 8759.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NSam Freed <sam@freed.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      3fb6589c
  17. 13 7月, 2007 2 次提交
  19. 11 7月, 2007 2 次提交