linux.git/drivers/ata/libata.h, branch v2.6.20

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

2006-12-05T17:01:28+00:00

Conflicts:

	drivers/ata/libata-scsi.c
	include/linux/libata.h

Futher merge of Linus's head and compilation fixups.

Signed-Off-By: David Howells

[PATCH] libata: always use polling IDENTIFY

2006-12-03T12:58:10+00:00

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: Tejun Heo 
Signed-off-by: Jeff Garzik

[PATCH] libata: prepare ata_sg_clean() for invocation from EH

2006-12-03T08:56:24+00:00

Make ata_sg_clean() global and don't allow NCQ for internal commands.

Signed-off-by: Tejun Heo

[PATCH] libata: separate out rw ATA taskfile building into ata_build_rw_tf()

2006-12-03T08:56:24+00:00

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: Tejun Heo

[PATCH] libata: implement ata_exec_internal_sg()

2006-12-03T08:56:24+00:00

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: Tejun Heo

[PATCH] libata: implement ata_tf_read_block()

2006-12-02T03:46:00+00:00

Implement ata_tf_read_block().

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik

[PATCH] libata: implement presence detection via polling IDENTIFY

2006-12-02T03:45:55+00:00

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

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

2006-12-02T03:45:55+00:00

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

[PATCH] libata: implement ATA_EHI_PRINTINFO

2006-12-02T03:41:31+00:00

Implement ehi flag ATA_EHI_PRINTINFO.  This flag is set when device
configuration needs to print out device info.  This used to be handled
by @print_info argument to ata_dev_configure() but LLDs also need to
know about it in ->dev_config() callback.

This patch replaces @print_info w/ ATA_EHI_PRINTINFO and make sata_sil
print workaround messages only on the initial configuration.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik

[PATCH] libata: move ata_irq_on() into libata-sff.c

2006-12-02T03:40:28+00:00

ata_irq_on() isn't used outside of libata core layer.  The function is
TF/SFF interface specific but currently used by core path with some
hack too.  Move it from include/linux/libata.h to
drivers/ata/libata-sff.c.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik