Skip to content

K
kernel_linux

OpenHarmony / kernel_linux
上一次同步 3 年多

通知 13
Star 8
Fork 2
K
kernel_linux
切换分支/标签
  1. 21 2月, 2007 5 次提交
    • T
      libata: fix probe_ent alloc/free bugs · 4d05447e
      由 Tejun Heo 提交于 
      ata_probe_ent_alloc() had a temporary hack such that devm_kzalloc()
was used for allocation if devres had been previously initialized on
the device; otherwise, plain kzalloc() was used.  This was to make the
code useable from both the old and devres-aware libata drivers during
transition.  This hack made ata_sas_port_alloc() unable to determine
how the probe_ent is allocated, causing double free in some cases.

Remove the now-unneeded hack and make ata_sas_port_alloc() use
devm_kfree().
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      4d05447e
    • T
      libata: kill ATA_DNXFER_ANY · 909706a2
      由 Tejun Heo 提交于 
      ATA_DNXFER_ANY isn't used anymore.  Kill it.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      909706a2
    • T
      libata: improve probe failure handling · 4ae72a1e
      由 Tejun Heo 提交于 
      * Move forcing device to PIO0 on device disable into
  ata_dev_disable().  This makes both old and new EHs act the same
  way.

* Speed down only PIO mode on probe failure.  All commands used during
  probing are PIO commands.  There's no point in speeding down DMA.

* Retry at least once after -ENODEV.  Some devices report garbled
  IDENTIFY data after certain events.  This shouldn't cause device
  detach and re-attach.

* Rearrange EH failure path for simplicity.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      4ae72a1e
    • T
      libata: improve ata_down_xfermask_limit() · 458337db
      由 Tejun Heo 提交于 
      Make ata_down_xfermask_limit() accept @sel instead of @force_pio0.
@sel selects how the xfermask limit will be adjusted.  The following
selectors are defined.

* ATA_DNXFER_PIO	: only speed down PIO
* ATA_DNXFER_DMA	: only speed down DMA, don't cause transfer mode change
* ATA_DNXFER_40C	: apply 40c cable limit
* ATA_DNXFER_FORCE_PIO	: force PIO
* ATA_DNXFER_FORCE_PIO0	: force PIO0 (same as original with @force_pio0 == 1)
* ATA_DNXFER_ANY	: same as original with @force_pio0 == 0

Currently, only ANY and FORCE_PIO0 are used to maintain the original
behavior.  Other selectors will be used later to improve EH speed down
sequence.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      458337db
    • A
      libata: PATA driver for Celleb · a619f981
      由 Akira Iguchi 提交于 
      This is the patch for PATA controller of Celleb.

This driver uses the managed iomap (devres).

Because this driver needs special taskfile accesses, there is
a copy of ata_std_softreset(). ata_dev_try_classify() is exported
so that it can be used in this function.
Signed-off-by: NKou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: NAkira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      a619f981
  3. 17 2月, 2007 3 次提交
  5. 16 2月, 2007 1 次提交
    • T
      libata: clear TF before IDENTIFYing · 81afe893
      由 Tejun Heo 提交于 
      Some devices chock if Feature is not clear when IDENTIFY is issued.
Set ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE for IDENTIFY such that whole
TF is cleared when reading ID data.

Kudos to Art Haas for testing various futile patches over several
months and Mark Lord for pointing out the fix.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: Art Haas <ahaas@airmail.net>
Cc: Mark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      81afe893
  7. 10 2月, 2007 17 次提交
  9. 03 2月, 2007 1 次提交
  11. 30 1月, 2007 1 次提交
  13. 25 1月, 2007 1 次提交
  15. 16 12月, 2006 1 次提交
  17. 07 12月, 2006 2 次提交
  19. 03 12月, 2006 7 次提交
    • T
      [PATCH] libata: always use polling IDENTIFY · 800b3996
      由 Tejun Heo 提交于 
      libata switched to IRQ-driven IDENTIFY when IRQ-driven PIO was
introduced.  This has caused a lot of problems including device
misdetection and phantom device.

ATA_FLAG_DETECT_POLLING was added recently to selectively use polling
IDENTIFY on problemetic drivers but many controllers and devices are
affected by this problem and trying to adding ATA_FLAG_DETECT_POLLING
for each such case is diffcult and not very rewarding.

This patch makes libata always use polling IDENTIFY.  This is
consistent with libata's original behavior and drivers/ide's behavior.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      800b3996
    • T
      [PATCH] libata: prepare ata_sg_clean() for invocation from EH · 70e6ad0c
      由 Tejun Heo 提交于 
      Make ata_sg_clean() global and don't allow NCQ for internal commands.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      70e6ad0c
    • T
      [PATCH] libata: separate out rw ATA taskfile building into ata_build_rw_tf() · bd056d7e
      由 Tejun Heo 提交于 
      Separate out rw ATA taskfile building from ata_scsi_rw_xlat() into
ata_build_rw_tf().  This will be used to improve media error handling.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      bd056d7e
    • T
      [PATCH] libata: implement ata_exec_internal_sg() · 2432697b
      由 Tejun Heo 提交于 
      Sg'ify ata_exec_internal() and call it ata_exec_internal_sg().
Wrapper function around ata_exec_internal_sg() is implemented to
provide ata_exec_internal() interface.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      2432697b
    • T
      [PATCH] libata: make sure IRQ is cleared after ata_bmdma_freeze() · 0f0a3ad3
      由 Tejun Heo 提交于 
      Now that BMDMA status is recorded in irq handler.  ata_bmdma_freeze()
is free to manipulate host status.  Under certain circumstances, some
controllers (ICH7 in enhanced mode w/ IRQ shared) raise IRQ when CTL
register is written to and ATA_NIEN doesn't mask it.

This patch makes ata_bmdma_freeze() clear all pending IRQs after
freezing a port.  This change makes explicit clearing in
ata_device_add() unnecessary and thus kills it.  The removed code was
SFF-specific and was in the wrong place.

Note that ->freeze() handler is always called under ap->lock held and
irq disabled.  Even if CTL manipulation causes stuck IRQ, it's cleared
immediately.  This should be safe (enough) even in SMP environment.
More correct solution is to mask the IRQ from IRQ controller but that
would be an overkill.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      0f0a3ad3
    • T
      [PATCH] libata: move BMDMA host status recording from EH to interrupt handler · ea54763f
      由 Tejun Heo 提交于 
      For certain errors, interrupt handler alter BMDMA host status before
entering EH (clears active and intr).  Thus altered BMDMA host status
value is recorded by BMDMA EH and reported to user.  Move BMDMA host
status recording from EH to interrupt handler.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      ea54763f
    • T
      [PATCH] libata: implement ATA_FLAG_SETXFER_POLLING and use it in pata_via, take #2 · 3d3cca37
      由 Tejun Heo 提交于 
      This patch implements ATA_FLAG_SETXFER_POLLING and use in pata_via.
If this flag is set, transfer mode setting performed by polling not by
interrupt.  This should help those controllers which raise interrupt
before the command is actually complete on SETXFER.

Rationale for this approach.

* uses existing facility and relatively simple
* no busy sleep in the interrupt handler
* updating drivers is easy

While at it, kill now unused flag ATA_FLAG_SRST in pata_via.
Signed-off-by: NTejun Heo <htejun@gmail.com>
      3d3cca37
  21. 02 12月, 2006 1 次提交