BMC/Intel-BMC/linux.git/arch/arc/include/asm/irq.h, branch dev

ARCv2: SMP: Support ARConnect (MCIP) for Inter-Core-Interrupts et al

2015-06-22T08:36:56+00:00

Cc: Jason Cooper Cc: Thomas Gleixner Signed-off-by: Vineet Gupta

ARCv2: Support for ARCv2 ISA and HS38x cores

2015-06-22T08:36:55+00:00

The notable features are: - SMP configurations of upto 4 cores with coherency - Optional L2 Cache and IO-Coherency - Revised Interrupt Architecture (multiple priorites, reg banks, auto stack switch, auto regfile save/restore) - MMUv4 (PIPT dcache, Huge Pages) - Instructions for * 64bit load/store: LDD, STD * Hardware assisted divide/remainder: DIV, REM * Function prologue/epilogue: ENTER_S, LEAVE_S * IRQ enable/disable: CLRI, SETI * pop count: FFS, FLS * SETcc, BMSKN, XBFU... Signed-off-by: Vineet Gupta

ARC: [SMP] unify cpu private IRQ requests (TIMER/IPI)

2014-07-23T05:46:45+00:00

The current cpu-private IRQ registration is ugly as it requires need to expose arch_unmask_irq() outside of intc code. So switch to percpu IRQ APIs: -request_percpu_irq [boot core] -enable_percpu_irq [all cores] Encapsulated in helper arc_request_percpu_irq() Signed-off-by: Vineet Gupta

ARC: arc_local_timer_setup() need not pass own cpu id

2014-06-03T07:56:52+00:00

Signed-off-by: Vineet Gupta

ARC: [SMP] ISS SMP extension bitrot

2014-05-05T08:52:12+00:00

* Move extension specific code out of common SMP code * Don't enable it by default for SMP Signed-off-by: Vineet Gupta

arc: remove '__init' for get_hw_config_num_irq()

2013-11-06T05:11:43+00:00

get_hw_config_num_irq() may be called by normal iss_model_init_smp() which is a function pointer for 'init_smp' which may be called by first_lines_of_secondary() which also need be normal too. The related warning (with allmodconfig): MODPOST vmlinux.o WARNING: vmlinux.o(.text+0x5814): Section mismatch in reference from the function iss_model_init_smp() to the function .init.text:get_hw_config_num_irq() The function iss_model_init_smp() references the function __init get_hw_config_num_irq(). This is often because iss_model_init_smp lacks a __init annotation or the annotation of get_hw_config_num_irq is wrong. Signed-off-by: Chen Gang

arc: remove '__init' for setup_processor() and arc_init_IRQ()

2013-11-06T05:11:42+00:00

They haven't '__init' in definition, but has '__init' in declaration. And normal function start_kernel_secondary() may call setup_processor() which will call arc_init_IRQ(). So need remove '__init' for both of them. The related warning (with allmodconfig): MODPOST vmlinux.o WARNING: vmlinux.o(.text+0x3084): Section mismatch in reference from the function start_kernel_secondary() to the function .init.text:setup_processor() The function start_kernel_secondary() references the function __init setup_processor(). This is often because start_kernel_secondary lacks a __init annotation or the annotation of setup_processor is wrong. Signed-off-by: Chen Gang

arc: delete __cpuinit usage from all arc files

2013-06-27T09:07:58+00:00

The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/arc uses of the __cpuinit macros from all C files. Currently arc does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Vineet Gupta Signed-off-by: Paul Gortmaker Signed-off-by: Vineet Gupta

ARC: Prepare interrupt code for external controllers

2013-05-07T08:13:58+00:00

This patch adds some room for CPU-external interrupt controllers in the Linux interrupt space. Until now, only the 32 CPU internal interrupt lines were supported which does not allow for external interrupt controllers such as GPIO modules etc. Signed-off-by: Christian Ruppert Signed-off-by: Pierrick Hascoet Signed-off-by: Vineet Gupta

ARC: [Review] Multi-platform image #5: NR_IRQS defined by ARC core

2013-02-15T17:46:15+00:00

For now this will suffice for all platforms, later exotic ones needs to get this from DeviceTree Signed-off-by: Vineet Gupta Cc: Arnd Bergmann