Commits · 8a93758170a58b5afe3e45d7d5bebbdd401a24c2 · nexedi / linux

02 Dec, 2006 40 commits

[PATCH] libata: improve failed qc reporting · 8a937581

Tejun Heo authored Nov 14, 2006

Improve failed qc reporting.  The original message didn't include the
actual command nor full error status and it was necessary to
temporarily patch the code to find out exactly which command is
causing problem.  This patch makes EH report full command and result
TFs along with data direction and length.  This change will make bug
reports more useful.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

8a937581

[PATCH] ata_piix: strip now unneded MAP related stuff · 5e56a37c

Tejun Heo authored Nov 10, 2006

Now that PCS isn't used for device detection anymore...

* esb_sata is identical to ich5_sata
* no reason to know present_shift
* no reason to store map_db in host private area

The MAP table itself is left because it can be used for SCR access.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

5e56a37c

[PATCH] ata_piix: apply device detection via polling IDENTIFY · 228c1590

Tejun Heo authored Nov 10, 2006

PATA PIIX uses reset signature + TF r/w test for device presence
detection, which doesn't always work.  It sometimes reports phantom
device which results in IDENTIFY timeouts.

SATA PIIX uses some combination of PCS + reset signature + TF r/w test
for device presence detection.  No combination satifies all and for
some controllers, there doesn't seem to be any combination which
works reliably.

This patch makes both PATA and SATA piix's use reset signature + TF
r/w + polling IDENTIFY for device detection.  This is what the old
libata (before irq-pio and new EH) did and what IDE does.

This patch also removes now obsolete PIIX_FLAG_IGNORE_PCS, force_pcs
and related code.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

228c1590

[PATCH] libata: implement presence detection via polling IDENTIFY · 55a8e2c8

Tejun Heo authored Nov 10, 2006

On some controllers (ICHs in piix mode), there is *NO* reliable way to
determine device presence other than issuing IDENTIFY and see how the
transaction proceeds by watching the TF status register.

libata acted this way before irq-pio and phantom devices caused very
little problem but now that IDENTIFY is performed using IRQ drive PIO,
such phantom devices now result in multiple 30sec timeouts during
boot.

This patch implements ATA_FLAG_DETECT_POLLING.  If a LLD sets this
flag, libata core issues the initial IDENTIFY in polling mode and if
the initial data transfer fails w/ HSM violation, the port is
considered to be empty thus replicating the old libata and IDE
behavior.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

55a8e2c8

[PATCH] libata: convert @post_reset to @flags in ata_dev_read_id() · bff04647

Tejun Heo authored Nov 10, 2006

Make ata_dev_read_id() take @flags instead of @post_reset.  Currently
there is only one flag defined - ATA_READID_POSTRESET, which is
equivalent to @post_reset.  This is preparation for polling presence
detection.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

bff04647

[PATCH] ata_piix: clean up port flags · b3362f88

Tejun Heo authored Nov 10, 2006

* move common flags into PIIX_PATA_FLAGS and PIIX_SATA_FLAGS
* kill unnecessary ATA_FLAG_SRST
Signed-off-by: Jeff Garzik <jeff@garzik.org>

b3362f88

[PATCH] libata: use FLUSH_EXT only when driver is larger than LBA28 limit · 6fc49adb

Tejun Heo authored Nov 11, 2006

Many drives support LBA48 even when its capacity is smaller than
1<<28, as LBA48 is required for many functionalities.  FLUSH_EXT is
mandatory for drives w/ LBA48 support.

Interestingly, at least one of such drives (ST960812A) has problems
dealing with FLUSH_EXT.  It eventually completes the command but takes
around 7 seconds to finish in many cases thus drastically slowing down
IO transactions.  This seems to be a firmware bug which sneaked into
production probably because no other ATA driver including linux IDE
issues FLUSH_EXT to drives which report support for LBA48 & FLUSH_EXT
but is smaller than 1<<28 blocks.

This patch adds ATA_DFLAG_FLUSH_EXT which is set iff the drive
supports LBA48 & FLUSH_EXT and is larger than LBA28 limit.  Both cache
flush paths are updated to issue FLUSH_EXT only when the flag is set.
Note that the changed behavior is more inline with the rest of libata.
libata prefers shorter commands whenever possible.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Danny Kukawka <dkukawka@novell.com>
Cc: Stefan Seyfried <seife@novell.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

6fc49adb

[PATCH] ahci: honor PORTS_IMPL on ICH8s · 648a88be

Tejun Heo authored Nov 09, 2006

Some ICH8s use non-linear port mapping.  ahci driver didn't use to
honor PORTS_IMPL and this made ports after hole nonfunctional.  This
patch makes ahci mark those ports as dummy and properly initialize all
the implemented ports after the dummies.

As it's unknown whether other AHCIs implement PORTS_IMPL register
properly, new board id board_ahci_pi is added and selectively applied
to ICH8s.  All other AHCIs continue to use linear mapping regardless
of PORTS_IMPL value.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

648a88be

[libata] ARM: add ixp4xx PATA driver · 0df0d0a0

Alessandro Zummo authored Nov 14, 2006

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

0df0d0a0

[PATCH] sata_sis: slave support on SiS965 · 4adccf6f

Uwe Koziolek authored Nov 08, 2006

SiS965 and SiS180 chips must support slave mode,
SiS965L and SiS964 chips must not support slave mode.

SCR_STATUS for SATA ports in powerdown state fixed.
Now returning 0x0113 instead of 0x0117. Avoids problem
on detecting sata_sis controller.
Signed-off-by: Uwe Koziolek <uwe.koziolek@gmx.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

4adccf6f

[PATCH] ahci: preserve PORTS_IMPL over host resets · 98fa4b60

Tejun Heo authored Nov 02, 2006

Instead of writing 0xf blindly, preserve the content of write-once
PORTS_IMPL register over host resets.

This patch is taken from Jeff Garzik's AHCI init update patch.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

98fa4b60

[PATCH] pdc202xx_old: Fix name clashes with PA-RISC · ada406c8

Alan Cox authored Nov 03, 2006

pdc_* functions are part of the global namespace for the PDC on PA-RISC
systems and this means our choice of pdc_ causes collisions between the
PDC globals and our static functions. Rename them to pdc202xx where they
are for both 2024x and 2026x.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

ada406c8

[libata] ahci: Match PCI class code for AHCI · 415ae2b5
Jeff Garzik authored Nov 01, 2006
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Signed-off-by: Jeff Garzik <jeff@garzik.org>
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415ae2b5