linux-toradex.git/drivers/ata/libahci.c, branch v3.11

Merge branch 'libata/for-3.10-fixes' into libata/for-3.11

2013-07-03T02:54:16+00:00

libata/for-3.10-fixes never got submitted during v3.10 cycle.  Merge
it into for-3.11 so that it can be routed together with other changes
scheduled for v3.11.

Three trivial conflicts in drivers/ata/sata_rcar.c.  All are caused by
1b20f6a9ad ("sata_rcar: add 'base' local variable to some functions")
conflicting with logic updates in for-3.10-fixes.  The offending
commit simply adds local variable @base on functions which
dereferences sata_rcar_priv->base multiple times.  The resolutions are
trivial - applying s/priv->base/base/ in the conflicting logic
updates.

Signed-off-by: Tejun Heo

AHCI: use ATA_BUSY

2013-06-24T23:29:31+00:00

ahci_hardreset() and ahci_p5wdh_hardreset() use bare numbers for the
BSY bit of the ATA status register, despite it's #define'd in
.

Signed-off-by: Sergei Shtylyov 
Signed-off-by: Tejun Heo

ahci: remove pmp link online check in FBS EH

2013-06-09T21:54:32+00:00

ata_link_online() check in ahci_error_intr() is unnecessary, it should
be removed otherwise may lead to lockup with FBS enabled PMP.
http://marc.info/?l=linux-ide&m=137050421603272&w=2

Reported-by: Yu Liu 
Signed-off-by: Shane Huang 
Signed-off-by: Tejun Heo 
Cc: stable@vger.kernel.org

ahci: make ahci_transmit_led_message into a function pointer

2013-06-06T21:05:23+00:00

Create a new ata_port_operations function pointer called
transmit_led_message and give it the default value of
ahci_transmit_led_message. This allows AHCI controllers with
non-standard LED interfaces to use the existing em_ interface.

Signed-off-by: Mark Langsdorf 
Signed-off-by: Tejun Heo

AHCI: Make distinct names for ports in /proc/interrupts

2013-05-21T23:53:48+00:00

Currently all interrupts assigned to AHCI ports show up in
'/proc/interrupts' as 'ahci'. This fix adds port numbers as
suffixes and hence makes the descriptions distinct.

Reported-by: Jan Beulich 
Signed-off-by: Alexander Gordeev 
Signed-off-by: Tejun Heo

libata: update "Maintained by:" tags

2013-05-14T18:13:04+00:00

Jeff moved on to a greener pasture.

 s/Maintained by: Jeff Garzik/Maintained by: Tejun Heo/g

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

AHCI: Support multiple MSIs

2013-01-24T16:25:13+00:00

Take advantage of multiple MSIs implementation on x86 - on
systems with IRQ remapping AHCI ports not only get assigned
separate MSI vectors - but also separate IRQs. As result,
interrupts generated by different ports could be serviced on
different CPUs rather than on a single one.

In cases when number of allocated MSIs is less than requested
the Sharing Last MSI mode does not get used, no matter
implemented in hardware or not. Instead, the driver assumes the
advantage of multiple MSIs is negated and falls back to the
single MSI mode as if MRSM bit was set (some Intel chips
implement this strategy anyway - MRSM bit gets set even if the
number of allocated MSIs exceeds the number of implemented ports).

Signed-off-by: Alexander Gordeev 
Acked-by: Jeff Garzik 
Cc: Bjorn Helgaas 
Cc: Suresh Siddha 
Cc: Yinghai Lu 
Cc: Matthew Wilcox 
Cc: Linus Torvalds 
Cc: Andrew Morton 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Link: http://lkml.kernel.org/r/15bf7ee314dd55f21ec7d2a01c47613cd8190a7c.1353324359.git.agordeev@redhat.com
Signed-off-by: Ingo Molnar

[libata] replace sata_settings with devslp_timing

2013-01-14T18:29:15+00:00

NCQ capability was used to check availability of SATA Settings page
from Identify Device Data Log, which contains DevSlp timing variables.
It does not work on some HDDs and leads to error messages.

IDENTIFY word 78 bit 5(Hardware Feature Control) can't work either
because it is only the sufficient condition of Identify Device data
log, not the necessary condition.

This patch replaced ata_device->sata_settings with ->devslp_timing
to only save DevSlp timing variables(8 bytes), instead of the whole
SATA Settings page(512 bytes).

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=51881

Reported-by: Borislav Petkov 
Signed-off-by: Shane Huang 
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Garzik

ahci: convert ata_link_printk() to ata_link_warn()

2012-12-14T14:38:50+00:00

Using ata_link_warn() instead of ata_link_printk().

Signed-off-by: Wei Yongjun 
Signed-off-by: Jeff Garzik

ahci: implement aggressive SATA device sleep support

2012-09-13T05:08:53+00:00

Device Sleep is a feature as described in AHCI 1.3.1 Technical Proposal.
This feature enables an HBA and SATA storage device to enter the DevSleep
interface state, enabling lower power SATA-based systems.

Aggressive Device Sleep enables the HBA to assert the DEVSLP signal as
soon as there are no commands outstanding to the device and the port
specific Device Sleep idle timer has expired. This enables autonomous
entry into the DevSleep interface state without waiting for software
in power sensitive systems.

This patch enables Aggressive Device Sleep only if both host controller
and device support it.

Tested on AMD reference board together with Device Sleep supported device
sample.

Signed-off-by: Shane Huang 
Reviewed-by: Aaron Lu 
Signed-off-by: Jeff Garzik