linux-toradex.git/arch/powerpc/sysdev/fsl_rio.c, branch v4.2.7

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09+00:00

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev__once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...

powerpc/fsl-rio: add support for mapping inbound windows

2014-11-13T05:56:16+00:00

Add support for mapping and unmapping of inbound rapidio windows.  This
allows for drivers to open up a part of local memory on the rapidio
network.  Also applications can use this and tranfer blocks of data
over the network.

Signed-off-by: Martijn de Gouw 
[scottwood@freescale.com: updated commit message based on review]
Signed-off-by: Scott Wood

powerpc: sysdev: drop owner assignment from platform_drivers

2014-10-20T14:20:13+00:00

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang

powerpc/fsl-rio: Fix fsl_rio_setup error paths and use-after-unmap

2014-05-09T20:49:05+00:00

Several of the error paths from fsl_rio_setup are missing error
messages.

Worse, fsl_rio_setup initializes several global pointers and does not
NULL them out after freeing/unmapping on error.  This caused
fsl_rio_mcheck_exception() to crash when accessing rio_regs_win which
was non-NULL but had been unmapped.

Signed-off-by: Scott Wood 
Cc: Liu Gang 
---
Liu Gang, are you sure all of these error conditions are fatal?  Why
does the rio driver fail if rmu is not present (e.g.  on t4240)?

rapidio: rework device hierarchy and introduce mport class of devices

2014-04-07T23:36:07+00:00

This patch removes an artificial RapidIO bus root device and establishes
actual device hierarchy by providing reference to real parent devices.
It also introduces device class for RapidIO controller devices (on-chip
or an eternal bridge, known as "mport").

Existing implementation was sufficient for SoC-based platforms that have
a single RapidIO controller.  With introduction of devices using
multiple RapidIO controllers and PCIe-to-RapidIO bridges the old scheme
is very limiting or does not work at all.  The implemented changes allow
to properly reference platform's local RapidIO mport devices and provide
device details needed for upper layers.

This change to RapidIO device hierarchy does not break any known
existing kernel or user space interfaces.

Signed-off-by: Alexandre Bounine 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Kumar Gala 
Cc: Andre van Herk 
Cc: Stef van Os 
Cc: Jerry Jacobs 
Cc: Arno Tiemersma 
Cc: Rob Landley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: add explicit OF includes

2013-10-10T01:04:11+00:00

When removing prom.h include by of.h, several OF headers will no longer
be implicitly included. Add explicit includes of of_*.h as needed.

Signed-off-by: Rob Herring 
Acked-by: Grant Likely 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Anatolij Gustschin 
Cc: Kumar Gala 
Cc: Olof Johansson 
Cc: linuxppc-dev@lists.ozlabs.org

POWERPC: drivers: remove __dev* attributes.

2013-01-03T23:57:04+00:00

CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Signed-off-by: Greg Kroah-Hartman

powerpc/srio: Fix the relocation errors when building with 64bit

2012-03-16T15:46:30+00:00

For the file "arch/powerpc/sysdev/fsl_rio.c", there will be some relocation
errors while using the corenet64_smp_defconfig:

WARNING: modpost: Found 6 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
arch/powerpc/sysdev/built-in.o:(__ex_table+0x0):
	relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3208
arch/powerpc/sysdev/built-in.o:(__ex_table+0x2):
	relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'
arch/powerpc/sysdev/built-in.o:(__ex_table+0x4):
	relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3230
arch/powerpc/sysdev/built-in.o:(__ex_table+0x6):
	relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'+c
arch/powerpc/sysdev/built-in.o:(__ex_table+0x8):
	relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3250
arch/powerpc/sysdev/built-in.o:(__ex_table+0xa):
	relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'+18

Rewrote the corresponding code with the support of 64bit building.

Signed-off-by: Liu Gang 
Signed-off-by: Kumar Gala

fsl-rio: Add two ports and rapidio message units support

2011-11-24T08:01:34+00:00

Usually, freescale rapidio endpoint can support one or two 1x or 4X
LP-Serial link interfaces, and rapidio message transactions can be
implemented by two message units. This adds the support of two
rapidio ports and initializes message unit 0 and message unit 1. And
these ports and message units can work simultaneously.

Signed-off-by: Li Yang 
Signed-off-by: Jin Qing 
Signed-off-by: Liu Gang 
Acked-by: Alexandre Bounine 
Signed-off-by: Kumar Gala

fsl-rio: Split rio driver into two parts, RapidIO endpoint and message unit

2011-11-24T08:01:34+00:00

The Freescale PowerPC RapidIO controller consists of a RapidIO endpoint and
a RapidIO message unit(RMU). Or use RapidIO message manager(RMan) to
replace the RMU in DPAA architecture. Therefore, we should split the code
into two function modules according to the hardware architecture. Add new
struct for RMU module, and new initialization function to set up RMU
module. This policy is very conducive to adding new module like RMan, or
adding multi-ports or message units support.

Signed-off-by: Lian Minghuan 
Signed-off-by: Liu Gang 
Acked-by: Alexandre Bounine 
Signed-off-by: Kumar Gala