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  1. 24 5月, 2006 4 次提交
  3. 22 5月, 2006 1 次提交
  5. 20 5月, 2006 13 次提交
  7. 15 5月, 2006 22 次提交
    • T
      [PATCH] sata_sil24: implement NCQ support · aee10a03
      由 Tejun Heo 提交于 
      Implement NCQ support.  Sil24 has 31 command slots and all of them are
used for NCQ command queueing.  libata guarantees that no other
command is in progress when it issues an internal command, so always
use tag 0 for internal commands.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      aee10a03
    • T
      [PATCH] ahci: implement NCQ suppport · 12fad3f9
      由 Tejun Heo 提交于 
      Implement NCQ support.

Original implementation is from Jens Axboe.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      12fad3f9
    • T
      [PATCH] ahci: kill pp->cmd_tbl_sg · a9764c2b
      由 Tejun Heo 提交于 
      With NCQ, there are multiple sg tables, so pp->cmd_tbl_sg doesn't cut
it.  Directly calculate sg table address from pp->cmd_tbl.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      a9764c2b
    • T
      [PATCH] ahci: add HOST_CAP_NCQ constant · 979db803
      由 Tejun Heo 提交于 
      Add HOST_CAP_NCQ.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      979db803
    • T
      [PATCH] ahci: clean up AHCI constants in preparation for NCQ · dd410ff1
      由 Tejun Heo 提交于 
      * Rename CMD_TBL_HDR to CMD_TBL_HDR_SZ as it's size not offset.

* Define MAX_CMDS and CMD_SZ and use them in calculation of other
  constants.

* Define CMD_TBL_AR_SZ as product of CMD_TBL_SZ and MAX_CMDS, and use
  it when calculating PRIV_DMA_SZ.

* CMD_SLOT_SZ is also dependent on MAX_CMDS but hasn't been changed
  because I didn't want to change the value used by the original code
  (32 commands).  Later NCQ change will bump MAX_CMDS to 32 anyway and
  the hard coded 32 can be changed to MAX_CMDS then.

* Reorder HOST_CAP_* flags.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      dd410ff1
    • T
      [PATCH] libata-ncq: implement NCQ device configuration · a6e6ce8e
      由 Tejun Heo 提交于 
      Now that all NCQ related stuff are in place, implement NCQ device
configuration and bump ATA_MAX_QUEUE to 32 thus activating NCQ
support.

Original implementation is from Jens Axboe.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      a6e6ce8e
    • T
      [PATCH] libata-ncq: update EH to handle NCQ · e8ee8451
      由 Tejun Heo 提交于 
      Update EH to handle NCQ.  ata_eh_autopsy() is updated to call
ata_eh_analyze_ncq_error() which reads log page 10h on NCQ device
error and updates eh_context accordingly.  ata_eh_report() is updated
to report SActive.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      e8ee8451
    • T
      [PATCH] libata-ncq: implement NCQ command translation and exclusion · 3dc1d881
      由 Tejun Heo 提交于 
      This patch implements NCQ command translation and exclusion.  Note
that NCQ commands don't use ata_rwcmd_protocol() to choose ATA
command.  This is because, unlike non-NCQ RW commands, NCQ commands
can only be used for NCQ protocol and FUA handling is done with a flag
rather than separate command.

NCQ enabled device will have queue depth larger than one but no two
non-NCQ commands can be issued simultaneously, neither can a non-NCQ
command and NCQ commands.  This patch makes ata_scsi_translate()
return SCSI_MLQUEUE_DEVICE_BUSY if such exclusion is necessary.  SCSI
midlayer will retry the command later.

As SCSI midlayer always retries once a command completes, this doesn't
incur unnecessary delays and as most commands will be NCQ ones for NCQ
device, so the overhead should be negligible.

Initial implementation is from Jens Axboe and using
SCSI_MLQUEUE_DEVICE_BUSY for exclusion is suggested by Jeff Garzik.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      3dc1d881
    • T
      [PATCH] libata-ncq: implement ap->qc_active, ap->sactive and complete helper · dedaf2b0
      由 Tejun Heo 提交于 
      Add ap->qc_active and ap->sactive, mask of all active qcs and libata's
view of the SActive register, respectively.  Also, implement
ata_qc_complete_multiple() which takes new qc_active mask and complete
multiple qcs according to the mask.

These will be used to track NCQ commands and complete them.  The
distinction between ap->qc_active and ap->sactive is also useful for
later PM implementation.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      dedaf2b0
    • T
      [PATCH] libata-ncq: rename ap->qactive to ap->qc_allocated · 6cec4a39
      由 Tejun Heo 提交于 
      Rename ap->qactive to ap->qc_allocated.  This is to accomodate
addition of ap->qc_active, mask of active qcs.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      6cec4a39
    • T
      [PATCH] libata-ncq: pass ata_scsi_translate() return value to SCSI midlayer · 2115ea94
      由 Tejun Heo 提交于 
      ata_scsi_translate() will need to return SCSI_ML_QUEUE_DEVICE_BUSY to
achieve exlusion between NCQ and non-NCQ commands or among non-NCQ
commands.  Pass its return value upward to SCSI midlayer.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      2115ea94
    • T
      [PATCH] libata: fix irq-pio merge · c17ea20d
      由 Tejun Heo 提交于 
      * kill ata_poll_qc_complete() and implement/use ata_hsm_qc_complete()
  which completes qcs in new EH compliant manner from HSM

* don't print error message from ata_hsm_move().  it's responsibility
  of EH.

* kill ATA_FLAG_NOINTR usage in bmdma EH
Signed-off-by: NTejun Heo <htejun@gmail.com>
      c17ea20d
    • T
      [PATCH] sata_sil24: convert to new EH · 88ce7550
      由 Tejun Heo 提交于 
      Convert sata_sil24 to new EH.

* When port is frozen, IRQ for the port is masked.

* sil24_softreset() doesn't need to mangle with IRQ mask anymore.
  libata ensures that the port is frozen during reset.

* Only turn on interrupts which are handled by interrupt handler and
  EH.  As we don't handle SDB notify yet, turn it off. DEV_XCHG and
  UNK_FIS are handled by EH and thus turned on.

* sil24_softreset() usually fails to recover the port after DEV_XCHG.
  ATA_PORT_HARDRESET is used as recovery action for DEV_XCHG.

* sil24 may be invoked without any active command.  e.g. DEV_XCHG irq
  occuring while no qc in progress still triggers EH and will reset
  the port and revalidate attached device.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      88ce7550
    • T
      [PATCH] ahci: add PIOS interim interrupt handling · 2a3917a8
      由 Tejun Heo 提交于 
      During multiblock PIO, multiple PIOS interrupts are generated before
qc compltion.  Current code prints unnecessary message for such cases.
This is exposed when new EH slows down attached device into PIO mode.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      2a3917a8
    • T
      [PATCH] ahci: convert to new EH · 78cd52d0
      由 Tejun Heo 提交于 
      Convert AHCI to new EH.  Unfortunately, ICH7 AHCI reacts badly if IRQ
mask is diddled during operation.  So, freezing is implemented by
unconditionally clearing interrupt conditions while frozen.

* Interrupts are categorized according to required action.
  e.g. Connection status or unknown FIS error requires freezing the
  port while TF or HBUS_DATA don't.

* Only CONNECT (reflects SErr.X) interrupt is taken into account not
  PHYRDY (SErr.N), as CONNECT is better cue for starting EH.

* AHCI may be invoked without any active command.  e.g. CONNECT irq
  occuring while no qc in progress still triggers EH and will reset
  the port and revalidate attached device.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      78cd52d0
    • T
      [PATCH] sata_sil: convert to new EH · f6aae27e
      由 Tejun Heo 提交于 
      Convert sata_sil to new EH.  As these controllers have hardware
interrupt mask and are known to have screaming interrupts issues, use
hardware IRQ masking for freezing.  sil_freeze() masks interrupts for
the port and sil_thaw() unmasks them.  As ports are automatically
frozen before probing reset, there is no need to initialize interrupt
masks sil_init_onde().  Remove related code.

Other than freezing, sata_sil uses stock BMDMA EH routines.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      f6aae27e
    • T
      [PATCH] ata_piix: convert to new EH · 3f037db0
      由 Tejun Heo 提交于 
      ata_piix can use stock BMDMA EH routines.  Convert to new EH.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      3f037db0
    • T
      [PATCH] libata-eh: implement BMDMA EH · 6d97dbd7
      由 Tejun Heo 提交于 
      Implement stock BMDMA error handling methods.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      6d97dbd7
    • T
      [PATCH] libata-eh: implement new EH · 022bdb07
      由 Tejun Heo 提交于 
      Implement new EH.  The exported interface is ata_do_eh() which is to
be called from ->error_handler and performs the following steps to
recover the failed port.

ata_eh_autopsy() : analyze SError/TF, determine the cause of failure
		   and required recovery actions and record it in
		   ap->eh_context
ata_eh_report()	 : report the failure to user
ata_eh_recover() : perform recovery actions described in ap->eh_context
ata_eh_finish()	 : finish failed qcs

LLDDs can customize error handling by modifying eh_context before
calling ata_do_eh() or, if necessary, doing so inbetween each major
steps by calling each step explicitly.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      022bdb07
    • T
      [PATCH] libata-eh: implement ata_eh_info and ata_eh_context · f3e81b19
      由 Tejun Heo 提交于 
      struct ata_eh_info serves as the communication channel between
execution path and EH.  Execution path describes detected error
condition in ap->eh_info and EH recovers the port using it.  To avoid
missing error conditions detected during EH, EH makes its own copy of
eh_info and clears it on entry allowing error info to accumulate
during EH.

Most EH states including EH's copy of eh_info are stored in
ap->eh_context (struct ata_eh_context) which is owned by EH and thus
doesn't require any synchronization to access and alter.  This
standardized context makes it easy to integrate various parts of EH
and extend EH to handle multiple links (for PM).
Signed-off-by: NTejun Heo <htejun@gmail.com>
      f3e81b19
    • T
      [PATCH] libata-eh: implement dev->ering · 0c247c55
      由 Tejun Heo 提交于 
      This patch implements ata_ering and uses it to define dev->ering.

ata_ering is a ring buffer which records libata errors - whether a
command was for normar IO request, err_mask and timestamp.  Errors are
recorded per-device in dev->ering.  This will be used by EH to
determine recovery actions.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      0c247c55
    • T
      [PATCH] libata-eh-fw: update SCSI command completion path for new EH · 246619da
      由 Tejun Heo 提交于 
      SCSI command completion path used to do some part of EH including
printing messages and obtaining sense data.  With new EH, all these
are responsibilities of the EH, update SCSI command completion path to
reflect this.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      246619da