linux-toradex.git/drivers/ata/ahci.h, branch v4.1

ata: ahci_platform: fix owner module reference mismatch for scsi host

2015-01-28T23:45:23+00:00

The owner module reference of the ahci platform's scsi_host is
initialized to libahci_platform's one, because these drivers use a
scsi_host_template defined in libahci_platform.  So these drivers can
be unloaded even if the scsi device is being accessed.

This fixes it by pushing the scsi_host_template from libahci_platform
to all leaf drivers.  The scsi_host_template is passed through a new
argument of ahci_platform_init_host().

Signed-off-by: Akinobu Mita 
Signed-off-by: Tejun Heo 
Cc: Hans de Goede 
Cc: Christoph Hellwig 
Cc: "James E.J. Bottomley" 
Cc: linux-ide@vger.kernel.org
Cc: linux-scsi@vger.kernel.org

ata: libahci: Allow using multiple regulators

2015-01-19T14:53:26+00:00

The current implementation of the libahci allows using multiple PHYs
but not multiple regulators. This patch adds the support of multiple
regulators. Until now it was mandatory to have a PHY under a subnode,
now a port subnode can contain either a regulator or a PHY (or both).

In order to be able to asociate a port with a regulator the port are
now a platform device in the device tree case.

There was only one driver which used directly the regulator field of
the ahci_host_priv structure. To preserve the bisectability the change
in the ahci_imx driver was done in the same patch.

Signed-off-by: Gregory CLEMENT 
Acked-by: Hans de Goede 
Signed-off-by: Tejun Heo

AHCI: Do not read HOST_IRQ_STAT reg in multi-MSI mode

2014-10-06T15:43:36+00:00

As described in AHCI v1.0 specification chapter 10.6.2.2
"Multiple MSI Based Messages" generation of interrupts
is not controlled through the HOST_IRQ_STAT register.

Considering MMIO access is expensive remove unnecessary
reading and writing of HOST_IRQ_STAT register.

Further, serializing access to the host data is no longer
needed and the interrupt service routine can avoid competing
on the host lock.

Signed-off-by: Alexander Gordeev 
Suggested-by: "Jiang, Dave" 
Signed-off-by: Tejun Heo 
Cc: "Jiang, Dave" 
Cc: linux-ide@vger.kernel.org

AHCI: Move host activation code into ahci_host_activate()

2014-10-06T15:43:35+00:00

Currently host activation done by calling either function
ahci_host_activate() or ata_host_activate(). Consolidate
the code by only calling ahci_host_activate() for all AHCI
devices.

Signed-off-by: Alexander Gordeev 
Signed-off-by: Tejun Heo 
Cc: linux-ide@vger.kernel.org

AHCI: Pass SCSI host template as arg to ahci_host_activate()

2014-10-06T15:43:34+00:00

This update is a prerequisite for consolidation of
AHCI host activation code within ahci_host_activate()
function.

Signed-off-by: Alexander Gordeev 
Signed-off-by: Tejun Heo 
Cc: linux-ide@vger.kernel.org

AHCI: Cleanup checking of multiple MSIs/SLM modes

2014-09-28T15:43:56+00:00

Sharing Last Message (SLM) mode is currently checked in two
functions: ahci_host_activate() and ahci_init_interrupts().
This update consolidates SLM mode check with activation of
multiple MSIs mode.

Signed-off-by: Alexander Gordeev 
Signed-off-by: Tejun Heo 
Cc: linux-ide@vger.kernel.org

ahci-platform: Bump max number of clocks to 5

2014-09-23T13:16:56+00:00

Qualcomm IPQ806x SoCs with SATA controllers need 5 clocks to be enabled.

Signed-off-by: Kumar Gala 
Reviewed-by: Hans de Goede 
Signed-off-by: Tejun Heo

ata: libahci: allow to use multiple PHYs

2014-07-30T19:39:46+00:00

The current implementation of the libahci does not allow to use multiple
PHYs. This patch adds the support of multiple PHYs by the libahci while
keeping the old bindings valid for device tree compatibility.

This introduce a new way of defining SATA ports in the device tree, with
one port per sub-node. This as the advantage of allowing a per port
configuration. Because some ports may be accessible but disabled in the
device tree, the port_map mask is computed automatically when using
this.

Signed-off-by: Antoine Ténart 
Acked-by: Hans de Goede 
Acked-by: Kishon Vijay Abraham I 
Signed-off-by: Tejun Heo

ata: libahci_platform: move port_map parameters into the AHCI structure

2014-07-30T19:39:46+00:00

This patch moves force_port_map and mask_port_map into the
ahci_host_priv structure. This allows to modify them into the AHCI
framework. This is needed by the new dt bindings representing ports as
the port_map mask is computed automatically.

Parameters modifying force_port_map, mask_port_map and flags have been
removed from the ahci_platform_init_host() function, and inputs in the
ahci_host_priv structure are now directly filed.

Signed-off-by: Antoine Ténart 
Signed-off-by: Tejun Heo

Merge branch 'for-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata into for-3.17

2014-07-30T16:49:04+00:00

The scheduled ahci platform patches depend on change in
for-3.16-fixes.  Pull it into for-3.17.

Signed-off-by: Tejun Heo