linux.git/include/linux/libata.h, branch v2.6.26-rc2

[libata] revert new check-ready Status register logic

2008-05-09T19:00:55+00:00

This behavior differs across multiple controllers, so we cannot use
common logic for all controllers.

Revert back to the basic common behavior, and specific drivers will
be updated from here to take into account the unusual Status return
values.

Signed-off-by: Jeff Garzik

libata: export ata_eh_analyze_ncq_error

2008-05-06T15:37:58+00:00

Export ata_eh_analyze_ncq_error() for subsequent use by sata_mv,
as suggested by Tejun.

Signed-off-by: Mark Lord 
Signed-off-by: Jeff Garzik

libata: improve post-reset device ready test

2008-05-06T15:32:02+00:00

Some controllers (jmb and inic162x) use 0x77 and 0x7f to indicate that
the device isn't ready yet.  It looks like they use 0xff if device
presence is detected but connection isn't established.  0x77 or 0x7f
after connection is established and use the value from signature FIS
after receiving it.

This patch implements ata_check_ready(), which takes TF status value
and determines whether the port is ready or not considering the above
and other conditions, and use it in @check_ready() functions.  This is
safe as both 0x77 and 0x7f aren't valid ready status value even though
they have BSY bit cleared.

This fixes hot plug detection failures which can be triggered with
certain drives if they aren't already spun up when the data connector
is hot plugged.

Tested on sil, sil24, ahci (jmb/ich), piix and inic162x combined with
eight drives from all major vendors.

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

[libata] linux/libata.h: reorganize ata_device struct members a bit

2008-04-29T21:47:34+00:00

Put the big stuff at the end, to prepare for upcoming changes (and
also hopefully achieve nicer packing of remaining members).

Signed-off-by: Jeff Garzik

make sata_print_link_status() static

2008-04-25T04:46:09+00:00

sata_print_link_status() can now become static.

Signed-off-by: Adrian Bunk 
Signed-off-by: Jeff Garzik

SCSI: convert struct class_device to struct device

2008-04-20T02:10:33+00:00

It's big, but there doesn't seem to be a way to split it up smaller...

Signed-off-by: Tony Jones 
Signed-off-by: Kay Sievers 
Cc: Roland Dreier 
Cc: Sean Hefty 
Cc: Hal Rosenstock 
Cc: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

libata: make PMP support optional

2008-04-17T19:44:25+00:00

Make PMP support optional by adding CONFIG_SATA_PMP and leaving out
libata-pmp.c if it isn't set.  PMP helpers return constant values if
PMP support is not enabled and PMP declarations alias non-PMP
counterparts.  This makes the compiler to leave out PMP related part
out and LLDs to use non-PMP counterparts automatically.

Signed-off-by: Tejun Heo

libata: implement PMP helpers

2008-04-17T19:44:25+00:00

Implement helpers to test whether PMP is supported, attached and
determine pmp number to use when issuing SRST to a link.  While at it,
move ata_is_host_link() so that it's together with the two new PMP
helpers.

This change simplifies LLDs and helps making PMP support optional.

Signed-off-by: Tejun Heo

libata: separate PMP support code from core code

2008-04-17T19:44:25+00:00

Most of PMP support code is already in libata-pmp.c.  All that are in
libata-core.c are sata_pmp_port_ops and EXPORTs.  Move them to
libata-pmp.c.  Also, collect PMP related prototypes and declarations
in header files and move them right above of SFF stuff.

This change is to make PMP support optional.

Signed-off-by: Tejun Heo

libata: make SFF support optional

2008-04-17T19:44:24+00:00

Now that SFF support is completely separated out from the core layer,
it can be made optional.  Add CONFIG_ATA_SFF and let SFF drivers
depend on it.  If CONFIG_ATA_SFF isn't set, all codes in libata-sff.c
and data structures for SFF support are disabled.  This saves good
number of bytes for small systems.

Signed-off-by: Tejun Heo