pm24.git/arch/sparc/kernel/irq_32.c, branch v3.15

sparc32: handle leon in irq_32.c

2012-05-28T06:52:44Z

Signed-off-by: Sam Ravnborg Cc: Daniel Hellstrom Cc: Konrad Eisele

sparc32: Remove cypress cpu support.

2012-05-15T17:22:00Z

It's the one aberration in v8, the only cpu that didn't actually have hardware multiply and divide instructions. Signed-off-by: David S. Miller Acked-by: Sam Ravnborg

sparc32: remove runtime btfix support

2012-05-14T21:05:09Z

- remove all uses of btfixup header - remove the btfixup header - remove the btfixup code Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller

sparc32: drop sun4c support

2012-05-12T02:27:44Z

Machines with sun4c support are very rare these days, and noone is using them for any practical purposes. The sun4c support has been know broken for quite some time too. So rather than trying to keep it up-to-date, lets get rid of it. This allows us to do some very welcome cleanup of sparc32 support. Updated the former sun4c specifc nmi (which was also used for sun4m UP) to be a generic UP NMI. Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller

sparc32: rename sparc_irq_config to sparc_config

2012-04-15T17:28:49Z

This struct holds platform specific config and is thus not limited to irq stuff. Do not let the name confuse us to think this is irq only. Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller

sparc: add export.h to arch/sparc files as required

2011-10-31T23:30:52Z

These files are only exporting symbols, so they don't need the full module.h header file. Previously they were getting access to EXPORT_SYMBOL implicitly via overuse of module.h from within other .h files, but that is being cleaned up. Signed-off-by: Paul Gortmaker

sparc32: implement SMP IPIs using the generic functions

2011-05-16T20:07:43Z

The current sparc32 SMP IPI generation is implemented the cross call function. The cross call function uses IRQ15 the NMI, this is has the effect that IPIs will interrupt IRQ critical areas and hang the system. Typically on/after spin_lock_irqsave calls can be aborted. The cross call functionality must still exist to flush cache/TLBS. This patch provides CPU models a custom way to implement generation of IPIs on the generic code's request. The typical approach is to generate an IRQ for each IPI case. After this patch each sparc32 SMP CPU model needs to implement IPIs in order to function properly. Signed-off-by: Daniel Hellstrom Signed-off-by: David S. Miller

sparc32: genirq support

2011-04-20T05:11:40Z

The conversion of sparc32 to genirq is based on original work done by David S. Miller. Daniel Hellstrom has helped in the conversion and implemented the shutdowm functionality. Marcel van Nies has tested this on Sparc Station 20 Test status: sun4c - not tested sun4m,pci - not tested sun4m,sbus - tested (Sparc Classic, Sparc Station 5, Sparc Station 20) sun4d - not tested leon - tested on various combinations of leon boards, including SMP variants generic Introduce use of GENERIC_HARDIRQS and GENERIC_IRQ_SHOW Allocate 64 IRQs - which is enough even for SS2000 Use a table of irq_bucket to maintain uses IRQs irq_bucket is also used to chain several irq's that must be called when the same intrrupt is asserted Use irq_link to link a interrupt source to the irq All plafforms must now supply their own build_device_irq method handler_irq rewriten to use generic irq support floppy Read FLOPPY_IRQ from platform device Use generic request_irq to register the floppy interrupt Rewrote sparc_floppy_irq to use the generic irq support pcic: Introduce irq_chip Store mask in chip_data for use in mask/unmask functions Add build_device_irq for pcic Use pcic_build_device_irq in pci_time_init allocate virtual irqs in pcic_fill_irq sun4c: Introduce irq_chip Store mask in chip_data for use in mask/unmask functions Add build_device_irq for sun4c Use sun4c_build_device_irq in sun4c_init_timers sun4m: Introduce irq_chip Introduce dedicated mask/unmask methods Introduce sun4m_handler_data that allow easy access to necessary data in the mask/unmask functions Add a helper method to enable profile_timer (used from smp) Added sun4m_build_device_irq Use sun4m_build_device_irq in sun4m_init_timers TODO: There is no replacement for smp_rotate that always scheduled next CPU as interrupt target upon an interrupt sun4d: Introduce irq_chip Introduce dedicated mask/unmask methods Introduce sun4d_handler_data that allow easy access to necessary data in mask/unmask fuctions Rewrote sun4d_handler_irq to use generic irq support TODO: The original implmentation of enable/disable had: if (irq < NR_IRQS) return; The new implmentation does not distingush between SBUS and cpu interrupts. I am no sure what is right here. I assume we need to do something for the cpu interrupts. I have not succeeded booting my sun4d box (with or without this patch) and my understanding of this platfrom is limited. So I would be a bit suprised if this works. leon: Introduce irq_chip Store mask in chip_data for use in mask/unmask functions Add build_device_irq for leon Use leon_build_device_irq in leon_init_timers Signed-off-by: Sam Ravnborg Acked-by: Daniel Hellstrom Tested-by: Daniel Hellstrom Tested-by: Marcel van Nies Cc: Thomas Gleixner Signed-off-by: David S. Miller

sparc32: cleanup code for pci init

2011-04-20T05:11:39Z

Move the ifdeffery to a header file to make the logic more obvious where we decide between PCI or SBUS init Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller

sparc32: introduce build_device_irq

2011-03-17T01:19:14Z

build_device_irq() is used to encapsulate the plaform specific details when we build an irq. For now the default is a simple 1:1 but sun4d differs. This patch refactors functionality - but does not change the existing functionality. Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller