linux.git/arch/powerpc/sysdev/mpic.c, branch v3.17

powerpc/mpic: Don't init the fsl error int until after mpic init

2014-05-22T23:08:30+00:00

Besides other potential problems, if MPIC_NO_RESET is  not set,
the error interrupt will be masked after it is requested.

Signed-off-by: Scott Wood

powerpc: Fix build failure in sysdev/mpic.c for MPIC_WEIRD=y

2014-02-11T00:24:45+00:00

Commit 446f6d06fab0b49c61887ecbe8286d6aaa796637 ("powerpc/mpic: Properly
set default triggers") breaks the mpc7447_hpc_defconfig as follows:

  CC      arch/powerpc/sysdev/mpic.o
arch/powerpc/sysdev/mpic.c: In function 'mpic_set_irq_type':
arch/powerpc/sysdev/mpic.c:886:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:890:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:894:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:898:9: error: case label does not reduce to an integer constant

Looking at the cpp output (gcc 4.7.3), I see:

   case mpic->hw_set[MPIC_IDX_VECPRI_SENSE_EDGE] |
        mpic->hw_set[MPIC_IDX_VECPRI_POLARITY_POSITIVE]:

The pointer into an array appears because CONFIG_MPIC_WEIRD=y is set
for this platform, thus enabling the following:

  -------------------
  #ifdef CONFIG_MPIC_WEIRD
  static u32 mpic_infos[][MPIC_IDX_END] = {
        [0] = { /* Original OpenPIC compatible MPIC */

  [...]

  #define MPIC_INFO(name) mpic->hw_set[MPIC_IDX_##name]

  #else /* CONFIG_MPIC_WEIRD */

  #define MPIC_INFO(name) MPIC_##name

  #endif /* CONFIG_MPIC_WEIRD */
  -------------------

Here we convert the case section to if/else if, and also add
the equivalent of a default case to warn about unknown types.
Boot tested on sbc8548, build tested on all defconfigs.

Signed-off-by: Paul Gortmaker 
Signed-off-by: Benjamin Herrenschmidt

Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2013-11-12T07:52:17+00:00

Pull devicetree updates from Rob Herring:
"DeviceTree updates for 3.13. This is a bit larger pull request than
usual for this cycle with lots of clean-up.

- Cross arch clean-up and consolidation of early DT scanning code.
- Clean-up and removal of arch prom.h headers. Makes arch specific
prom.h optional on all but Sparc.
- Addition of interrupts-extended property for devices connected to
multiple interrupt controllers.
- Refactoring of DT interrupt parsing code in preparation for
deferred probe of interrupts.
- ARM cpu and cpu topology bindings documentation.
- Various DT vendor binding documentation updates"

* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
powerpc: add missing explicit OF includes for ppc
dt/irq: add empty of_irq_count for !OF_IRQ
dt: disable self-tests for !OF_IRQ
of: irq: Fix interrupt-map entry matching
MIPS: Netlogic: replace early_init_devtree() call
of: Add Panasonic Corporation vendor prefix
of: Add Chunghwa Picture Tubes Ltd. vendor prefix
of: Add AU Optronics Corporation vendor prefix
of/irq: Fix potential buffer overflow
of/irq: Fix bug in interrupt parsing refactor.
of: set dma_mask to point to coherent_dma_mask
of: add vendor prefix for PHYTEC Messtechnik GmbH
DT: sort vendor-prefixes.txt
of: Add vendor prefix for Cadence
of: Add empty for_each_available_child_of_node() macro definition
arm/versatile: Fix versatile irq specifications.
of/irq: create interrupts-extended property
microblaze/pci: Drop PowerPC-ism from irq parsing
of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
of/irq: Use irq_of_parse_and_map()
...

powerpc/mpic: Disable preemption when calling mpic_processor_id()

2013-10-11T05:48:58+00:00

Otherwise, we get a debug traceback due to the use of
smp_processor_id() (or get_paca()) inside hard_smp_processor_id().
mpic_host_map() is just looking for a default CPU, so it doesn't matter
if we migrate after getting the CPU ID.

Signed-off-by: Scott Wood 
Signed-off-by: Benjamin Herrenschmidt

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/mpic: create mpic subsystem object

2013-07-01T23:38:42+00:00

Register a mpic subsystem at /sys/devices/system/

Signed-off-by: Wang Dongsheng 
Signed-off-by: Scott Wood

powerpc/mpic: add irq_set_wake support

2013-07-01T23:38:41+00:00

Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag.
So the wake up interrupt will not be disable in suspend_device_irqs.

Signed-off-by: Wang Dongsheng 
Signed-off-by: Scott Wood

powerpc/mpic: Add get_version API both for internal and external use

2013-07-01T23:38:28+00:00

MPIC version is useful information for both mpic_alloc() and mpic_init().
The patch provide an API to get MPIC version for reusing the code.
Also, some other IP block may need MPIC version for their own use.
The API for external use is also provided.

Signed-off-by: Jia Hongtao 
Signed-off-by: Li Yang 
Signed-off-by: Scott Wood

powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPU

2013-05-31T22:29:24+00:00

For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be
set in interrupt destination registers.

The code is applicable to 64-bit platforms as well as 32-bit.

Signed-off-by: Zhao Chenhui 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix irq_set_affinity() return values

2013-05-14T06:00:18+00:00

Signed-off-by: Alexander Gordeev 
Signed-off-by: Benjamin Herrenschmidt