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path: root/arch/sh/kernel/cpu/irq
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2012-03-28Disintegrate asm/system.h for SHDavid Howells
Disintegrate asm/system.h for SH. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-sh@vger.kernel.org
2011-03-29sh: Convert to new function namesThomas Gleixner
Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-10-27sh64: irq_data conversion.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-27sh: imask IRQs irq_data conversion.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-27sh: IPR IRQs irq_data conversion.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-26sh: Sanitize sparse irqThomas Gleixner
Switch over to the new allocator functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-26sh: Mass ctrl_in/outX to __raw_read/writeX conversion.Paul Mundt
The old ctrl in/out routines are non-portable and unsuitable for cross-platform use. While drivers/sh has already been sanitized, there is still quite a lot of code that is not. This converts the arch/sh/ bits over, which permits us to flag the routines as deprecated whilst still building with -Werror for the architecture code, and to ensure that future users are not added. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-09sh: Replace an explicit computation by the use of the container_of macroNicolas Palix
The macro container_of from kernel.h performs the same pointer arithmetic operation. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; expression mptr; expression member; @@ - (void *)((char *)mptr - offsetof(T, member)) + container_of(mptr, T, member) // </smpl> Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-18sh: Fixup last users of irq_chip->typenameThomas Gleixner
The typename member of struct irq_chip was kept for migration purposes and is obsolete since more than 2 years. Fix up the leftovers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-sh@vger.kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24sh: Fixes some write posting issues in the interrupt handling for SHStuart Menefy
It is possible for the CPU to re-enable it's interrupt block bit before the write to the interrupt controller has actually masked out the external interupt at the controller. We get around this by reading back from the interrupt controller which will ensure the write has happened. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11sh: Tie sparseirq in to Kconfig.Paul Mundt
Now that the dependent patches are merged, we are ready to enable sparseirq support. This simply adds the Kconfig option, and then converts from the _cpu to the _node allocation routines to follow the upstream sparseirq API changes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-26sh: irq: Fix up imask build warnings.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22sh: Wrap irq_to_desc_alloc_cpu() around CONFIG_SPARSE_IRQ temporarily.Paul Mundt
irq_to_desc_alloc_cpu() has been renamed to irq_to_desc_alloc_node() in -next, but as we can not presently enable SPARSE_IRQ without the early irq_desc alloc patch, protect it with an ifdef until the interface has settled and we are ready to enable it system-wide. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22sh: irq: Teach ipr and intc about dynamically allocating irq_descs.Paul Mundt
This hooks in irq_to_desc_alloc_cpu() to the necessary code paths in the intc and ipr controller registration paths. As these are the primary call paths for all SH CPUs, this alone will make all CPUs sparse IRQ ready. There is the added benefit now that each CPU contains specific IPR and INTC tables, so only the vectors with interrupt sources backing them will ever see an irq_desc instantiation. This effectively packs irq_desc down to match the CPU, rather than padding NR_IRQS out to cover the valid vector range. Boards with extra sources will still have to fiddle with the nr_irqs setting, but they can continue doing so through the machvec as before. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22sh: irq: Convert from irq_desc[] to irq_to_desc().Paul Mundt
This converts a few places that were using the old irq_desc[] array over to the shiny new irq_to_desc() helper. Preperatory work for sparse irq support. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22sh: irq: Rework the SR.IMASK bitmap handling.Paul Mundt
This tidies up how the SR.IMASK bitmap is managed, using the bitmap API directly instead. At the same time, tidy up the irq_chip conversion a bit. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-07sh: Kill off unused SH-5 irq_describe cruft.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-07sh: Integrate the SH-5 onchip_remap() more coherently.Paul Mundt
Presently this is special-cased for early initialization. While there are situations where these static early initializations are still necessary, with minor changes it is possible to use this for the regular ioremap implementation as well. This allows us to kill off the special-casing for the remap completely and to start tidying up all of the SH-5 special-casing in drivers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-03sh: remove obsolete hw_interrupt_typeThomas Gleixner
Impact: cleanup Convert the last remaining users to struct irq_chip and remove the define. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-01sh: Move the shared INTC code out to drivers/sh/Paul Mundt
The INTC code will be re-used across different architectures, so move this out to drivers/sh/ and include/linux/sh_intc.h respectively. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-01sh: Use __raw_xxx() I/O accessors for INTC and IPR.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-10sh: intc_prio_data() test before subtraction on unsignedroel kluin
bit is unsigned, so test before subtraction Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29sh: migrate to arch/sh/include/Paul Mundt
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28sh: add interrupt ack code to sh4aYoshihiro Shimoda
This patch is based on interrupt acknowledge code for external interrupt sources on sh3 processors and adds on sh4a processors. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-06-02sh/kernel/cpu/irq/intc-sh5.c build fixAdrian Bunk
This patch fixes the following build error caused by commit a1dc4b59fa4af97ae68ee214d4d72bbd7c7ec1dc (sh: intc_sh5 depends on cayman board for IRQ priority table.): <-- snip --> ... CC arch/sh/kernel/cpu/irq/intc-sh5.o /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/kernel/cpu/irq/intc-sh5.c: In function 'plat_irq_setup': /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/kernel/cpu/irq/intc-sh5.c:257: error: expected declaration or statement at end of input make[4]: *** [arch/sh/kernel/cpu/irq/intc-sh5.o] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08sh: intc register modify fixMagnus Damm
Make sure register modifications stay atomic. Fixes processors with shared priority register masking. Dual bitmap masking is unaffected. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08sh: no high level trigger on some sh3 cpusMagnus Damm
The processor models sh7706, sh7707 and sh7709 don't support high level trigger sense configuration. And the intc code looks like crap these days so what's the difference. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08sh: add interrupt ack code to sh3Magnus Damm
This patch adds interrupt acknowledge code for external interrupt sources on sh3 processors. Only really required for edge triggered interrupts, but we ack regardless of sense configuration. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08sh: intc_sh5 depends on cayman board for IRQ priority table.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14sh: Shut up some trivial build warnings.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14sh: remove maskreg irq codeMagnus Damm
This patch removes the maskreg irq code since it is not in use anymore. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: intc - remove default interrupt priority tablesMagnus Damm
This patch removes interrupt priority tables from the intc code. Optimal priority assignment varies with embedded application anyway, so keeping the interrupt priority tables together with cpu-specific code doesn't make sense. The function intc_set_priority() should be used instead to set the desired interrupt priority level. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: comment tidying for sh64->sh migration.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Get the mach-cayman IRQ support building.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: imask IRQ depends on sh32.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-31sh: Kill off dead ipr_irq_demux().Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc - initial SMP support.Magnus Damm
This implements initial support for the SMP INTC (particularly INTC2) controllers. These are largely implemented as conventional blocks, with register sets grouped together at fixed strides relative to the CPU id. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: remove CONFIG_CPU_HAS_INTC_IRQMagnus Damm
All processor specific interrupt code is now converted to make use of the new intc code. The config option CONFIG_CPU_HAS_INTC_IRQ is because of that pointless. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc - primary priority masking fixesMagnus Damm
This patch contains various intc fixes for problems reported by Markus Brunner on the linuxsh-dev mailing list: http://marc.info/?l=linuxsh-dev&m=118701948224991&w=1 Apart from added comments, the fixes are: - add intc_set_priority() function prototype to hw_irq.h - fix off-by-one error in intc_set_priority() - make sure _INTC_WIDTH() is set for primary priority masking Big thanks to Markus for finding these problems. Version two fixes a compile error and an inverted primary check. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Markus Brunner <super.firetwister@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc - rework core codeMagnus Damm
This patch reworks the intc core, implementing the following features: - Support dual priority registers - one set and one clear register - All 8/16/32 bit register combinations are now supported - Both single mask and single enable bitmap register are supported - Add code to set interrupt priority - Speedup sense and priority configuration code - Allocate data using bootmem, allows intc data structures to be __initdata - Save memory - allocated memory footprint is smaller than intc structures Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc - add a clear register to struct intc_prio_regMagnus Damm
We need a secondary register member in struct intc_prio_reg to support dual priority registers used by ipi on x3. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc: Fix sense regs oops for IRL IRQs.Paul Mundt
IRL doesn't always define sense registers, so don't bother trying to iterate through the table. This ended up causing an oops on SH-X3 when using IRL mode. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: remove intc2 codeMagnus Damm
There is no point in keeping around the now unused intc2 code. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21sh: intc - add single bitmap register supportMagnus Damm
This patch adds single bitmap register support to intc. The current code only handles 16 and 32 bit registers where a set bit means interrupt enabled, but this is easy to extend in the future. The INTC_IRQ() macro is also added to provide a way to hook in interrupt controllers for FPGAs in boards or companion chips. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-26sh: remove support for sh7300 and solution engine 7300Magnus Damm
This patch removes old dead code: - kill off sh7300 cpu support - get rid of broken solution engine 7300 board support Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-25sh: remove old broken pint codeMagnus Damm
The code in arch/sh/kernel/cpu/irq/pint.c doesn't compile, so let's get rid of it to make space for a future pint implementation on top of intc. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20sh: intc - improve group supportMagnus Damm
This patch improves intc group support, ie it makes it possible to group interrupts together and mask / unmask the entire group. This also works with priorities, so setting a priority for an entire group is also possible. This patch is needed to properly support certain processors such as the 7780. Fixes for NULL pointers in DECLARE_INTC_DESC() are also included. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20sh: intc - shared IPR and INTC2 controllerMagnus Damm
This is the second version of the shared interrupt controller patch for the sh architecture, fixing up handling of intc_reg_fns[]. The three main advantages with this controller over the existing ones are: - Both priority (ipr) and bitmap (intc2) registers are supported - External pin sense configuration is supported, ie edge vs level triggered - CPU/Board specific code maps 1:1 with datasheet for easy verification This controller can easily coexist with the current IPR and INTC2 controllers, but the idea is that CPUs/Boards should be moved over to this controller over time so we have a single code base to maintain. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-20sh: Hook up hard_smp_processor_id() for INTC2 block.Paul Mundt
We need to know the CPU ID in order to calculate the mask and ack registers effectively. Stub this in for UP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-15sh: rework ipr codeMagnus Damm
This patch reworks the ipr code by grouping the offset array together with the ipr_data structure in a new data structure called ipr_desc. This new structure also contains the name of the controller in struct irq_chip. The idea behind putting struct irq_chip in there is that we can use offsetof() to locate the base addresses in the irq_chip callbacks. This strategy has much in common with the recently merged intc2 code. One logic change has been made - the original ipr code enabled the interrupts by default but with this patch they are all disabled by default. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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