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  1. 03 12月, 2006 2 次提交
    • T
      [PATCH] libata: make sure sdev doesn't go away while rescanning · f84e7e41
      由 Tejun Heo 提交于 
      ata_scsi_dev_rescan() doesn't synchronize against SCSI device detach
and the target sdev might go away in the middle.  Fix it.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      f84e7e41
    • T
      [PATCH] libata: fix READ CAPACITY simulation · 6a36261e
      由 Tejun Heo 提交于 
      * READ CAPACITY (16) implementation fixed.  Result was shifted by two
  bytes.  Carlos Pardo spotted this problem and submitted preliminary
  patch.  Capacity => 2TB is handled correctly now.  (verifid w/ fake
  capacity)

* Use dev->n_sectors instead of re-reading directly from ID data.

* Define and use ATA_SCSI_RBUF_SET() which considers rbuf length.
  This should be done for all simulation functions.  Userland can
  issue any simulated command with arbitrary buffer length.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: Carlos Pardo <Carlos.Pardo@siliconimage.com>
      6a36261e
  3. 02 12月, 2006 6 次提交
  5. 28 11月, 2006 2 次提交
  7. 14 11月, 2006 1 次提交
    • D
      libata: fix double-completion on error · 253b92ec
      由 Darrick J. Wong 提交于 
      A curious thing happens, however, when ata_qc_new_init fails to get
an ata_queued_cmd:

First, ata_qc_new_init handles the failure like this:
    cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
    done(cmd);

Then, we return to ata_scsi_translate and do this:
    err_mem:
        cmd->result = (DID_ERROR << 16);
        done(cmd);

It appears to me that first we set a status code indicating that we're
ok but the device queue is full and finish the command,  but then
we blow away that status code and replace it with an error flag and
finish the command a second time!  That does not seem to be desirable
behavior since we merely want the I/O to wait until a command slot
frees up, not send errors up the block layer.

In the err_mem case, we should simply exit out of ata_scsi_translate
instead.
Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      253b92ec
  9. 11 10月, 2006 1 次提交
  11. 30 9月, 2006 1 次提交
  13. 29 9月, 2006 1 次提交
  15. 24 8月, 2006 1 次提交
    • J
      libata: Grand renaming. · cca3974e
      由 Jeff Garzik 提交于 
      The biggest change is that ata_host_set is renamed to ata_host.

* ata_host_set			=> ata_host
* ata_probe_ent->host_flags	=> ata_probe_ent->port_flags
* ata_probe_ent->host_set_flags	=> ata_probe_ent->_host_flags
* ata_host_stats		=> ata_port_stats
* ata_port->host		=> ata_port->scsi_host
* ata_port->host_set		=> ata_port->host
* ata_port_info->host_flags	=> ata_port_info->flags
* ata_(.*)host_set(.*)\(\)	=> ata_\1host\2()

The leading underscore in ata_probe_ent->_host_flags is to avoid
reusing ->host_flags for different purpose.  Currently, the only user
of the field is libata-bmdma.c and probe_ent itself is scheduled to be
removed.

ata_port->host is reused for different purpose but this field is used
inside libata core proper and of different type.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      cca3974e
  17. 10 8月, 2006 1 次提交
  19. 09 8月, 2006 2 次提交
    • T
      [PATCH] libata: clear sdev->locked on door lock failure · 22aac089
      由 Tejun Heo 提交于 
      SCSI EH locks door if sdev->locked is set.  Sometimes door lock
command fails continuously (e.g. when medium is not present) and as
libata uses EH to acquire sense data, this easily creates a loop where
a failed lock door invokes EH and EH issues lock door on completion.

This patch clears sdev->locked on door lock failure to break this
loop.  This problem has been spotted and diagnosed by Unicorn Chang
<uchang@tw.ibm.com>.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      22aac089
    • B
      [PATCH] libata: Add support for SATA attachment to SAS adapters · 80289167
      由 Brian King 提交于 
      The following patch enhances libata to allow SAS device drivers
to utilize libata to talk to SATA devices. It introduces some
new APIs which allow libata to be used without allocating a
virtual scsi host.

New APIs:

ata_sas_port_alloc - Allocate an ata_port
ata_sas_port_init - Initialize an ata_port (probe device, etc)
ata_sas_port_destroy - Free an ata_port allocated by ata_sas_port_alloc
ata_sas_slave_configure - configure scsi device
ata_sas_queuecmd - queue a scsi command, similar to ata_scsi_queuecomand

These new APIs can be used either directly by a SAS LLDD or could be used
by the SAS transport class.

Possible usage for a SAS LLDD would be:

scsi_scan_host
	target_alloc
		ata_sas_port_alloc
	slave_alloc
		ata_sas_port_init
	slave_configure
		ata_sas_slave_configure

Commands received by the LLDD for SATA devices would call ata_sas_queuecmd.

Device teardown would occur with:

slave_destroy
	port_disable
target_destroy
	ata_sas_port_destroy
Signed-off-by: NBrian King <brking@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      80289167
  21. 29 7月, 2006 1 次提交
  23. 06 7月, 2006 3 次提交
    • T
      [PATCH] libata: reimplement per-dev PM · d6f26d1f
      由 Tejun Heo 提交于 
      Reimplement per-dev PM.  The original implementation directly put the
device into suspended mode and didn't synchronize w/ EH operations
including hotplug.  This patch reimplements ata_scsi_device_suspend()
and ata_scsi_device_resume() such that they request EH to perform the
respective operations.  Both functions synchronize with hotplug such
that it doesn't operate on detached devices.

Suspend waits for completion but resume just issues request and
returns.  This allows parallel wake up of devices and thus speeds up
system resume.

Due to sdev detach synchronization, it's not feasible to separate out
EH requesting from sdev handling; thus, ata_device_suspend/resume()
are removed and everything is implemented in the respective
libata-scsi functions.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      d6f26d1f
    • T
      [PATCH] libata: implement ATA_EHI_RESUME_LINK · 28324304
      由 Tejun Heo 提交于 
      Implement ATA_EHI_RESUME_LINK, which indicates that the link needs to
be resumed.  This used to be implied by ATA_EHI_HOTPLUGGED.  However,
hotplug isn't the only event which requires link resume and separating
this out allows other places to request link resume.  This
differentiation also allows better debounce timing selection.

This patch converts user scan to use ATA_EHI_RESUME_LINK.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      28324304
    • T
      [PATCH] libata: add ap->pflags and move core dynamic flags to it · b51e9e5d
      由 Tejun Heo 提交于 
      ap->flags is way too clamped.  Separate out core dynamic flags to
ap->pflags.  ATA_FLAG_DISABLED is a dynamic flag but left alone as
it's referenced by a lot of LLDs and it's gonna be removed once all
LLDs are converted to new EH.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      b51e9e5d
  25. 28 6月, 2006 1 次提交
  27. 23 6月, 2006 2 次提交
  29. 12 6月, 2006 2 次提交
  31. 11 6月, 2006 1 次提交
  33. 06 6月, 2006 1 次提交
  35. 31 5月, 2006 7 次提交
  37. 24 5月, 2006 2 次提交
  39. 20 5月, 2006 1 次提交
  41. 15 5月, 2006 1 次提交