linux.git/arch/powerpc/sysdev/fsl_rio.c, branch v3.0.14

arch/powerpc/sysdev/fsl_rio.c: correct IECSR register clear value

2011-10-03T18:39:46+00:00

commit 671ee7f0ce62e4b991b47fcf1c161c3f710dabbc upstream.

This bug causes the IECSR register clear failure.  In this case, the RETE
(retry error threshold exceeded) interrupt will be generated and cannot be
cleared.  So the related ISR may be called persistently.

The RETE bit in IECSR is cleared by writing a 1 to it.

Signed-off-by: Liu Gang 
Cc: Benjamin Herrenschmidt 
Cc: Kumar Gala 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

powerpc/e500: fix breakage with fsl_rio_mcheck_exception

2011-06-22T11:15:16+00:00

The wrong MCSR bit was being used on e500mc.  MCSR_BUS_RBERR only exists
on e500v1/v2.  Use MCSR_LD on e500mc, and remove all MCSR checking
in fsl_rio_mcheck_exception as we now no longer call that function
if the appropriate bit in MCSR is not set.

If RIO support was enabled at compile-time, but was never probed, just
return from fsl_rio_mcheck_exception rather than dereference a NULL
pointer.

TODO: There is still a remaining, though comparitively minor, issue in
that this recovery mechanism will falsely engage if there's an unrelated
MCSR_LD event at the same time as a RIO error.

Signed-off-by: Scott Wood 
Signed-off-by: Kumar Gala

powerpc/fsl_rio: Error interrupt handler for sRIO on MPC85xx

2011-05-20T13:47:45+00:00

The sRIO controller reports errors to the core with one signal, it uses
register EPWISR to provides the core quick access to where the error
occurred.  The EPWISR indicates that there are 4 interrupts sources,
port1, port2, message unit and port write receive, but the sRIO driver
does not support port2 for now, still the handler takes care of port2.
Currently the handler only clear error status without any recovery.

Signed-off-by: Shaohui Xie 
Cc: Li Yang 
Cc: Kumar Gala 
Cc: Roy Zang 
Cc: Alexandre Bounine 
Signed-off-by: Kumar Gala

powerpc/fsl_rio: move machine_check handler

2011-05-20T13:46:57+00:00

Add support for machine_check support into machine_check_e500 and
machine_check_e500mc.

Signed-off-by: Shaohui Xie 
Cc: Li Yang 
Cc: Roy Zang 
Cc: Alexandre Bounine 
Signed-off-by: Kumar Gala

RapidIO/mpc85xx: fix possible mport registration problems

2011-04-14T23:06:56+00:00

Fix a possible problem with mport registration left non-cleared after
fsl_rio_setup() exits on link error.  Abort mport initialization if
registration failed.

This patch is applicable to 2.6.39-rc1 only.  The problem does not exist
for earlier versions.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: remove mport resource reservation from common RIO code

2011-03-24T02:46:43+00:00

Removes resource reservation from the common sybsystem initialization code
and make it part of mport driver initialization.  This resolves conflict
with resource reservation by device specific mport drivers.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: modify mport ID assignment

2011-03-24T02:46:43+00:00

Changes mport ID and host destination ID assignment to implement unified
method common to all mport drivers.  Makes "riohdid=" kernel command line
parameter common for all architectures with support for more that one host
destination ID assignment.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: modify subsystem and driver initialization sequence

2011-03-24T02:46:42+00:00

Subsystem initialization sequence modified to support presence of multiple
RapidIO controllers in the system.  The new sequence is compatible with
initialization of PCI devices.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add architecture specific callbacks

2011-03-24T02:46:41+00:00

This set of patches eliminates RapidIO dependency on PowerPC architecture
and makes it available to other architectures (x86 and MIPS).  It also
enables support of new platform independent RapidIO controllers such as
PCI-to-SRIO and PCI Express-to-SRIO.

This patch:

Extend number of mport callback functions to eliminate direct linking of
architecture specific mport operations.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

dt/powerpc: Eliminate users of of_platform_{,un}register_driver

2011-02-28T08:36:39+00:00

Get rid of old users of of_platform_driver in arch/powerpc.  Most
of_platform_driver users can be converted to use the platform_bus
directly.

Signed-off-by: Grant Likely