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| author | Rob Herring <rob.herring@calxeda.com> | 2012-02-09 01:24:23 +0100 |
|---|---|---|
| committer | Rob Herring <rob.herring@calxeda.com> | 2012-02-22 00:04:33 +0100 |
| commit | 78cbaaca6908c2ddf1bd26cf58c408938654e3d8 (patch) | |
| tree | 7e52f81c470138284f40617ffb51126bc3a3c496 /arch | |
| parent | ARM: make arch_ret_to_user macro optional (diff) | |
| download | linux-78cbaaca6908c2ddf1bd26cf58c408938654e3d8.tar.xz linux-78cbaaca6908c2ddf1bd26cf58c408938654e3d8.zip | |
ARM: rpc: make default fiq handler run-time installed
Only rpc uses disable_fiq macro. Change it to a run-time installed
default FIQ handler. The handler is installed before FIQ is enabled
so the behavior should be unchanged.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-rpc/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-rpc/fiq.S | 16 | ||||
| -rw-r--r-- | arch/arm/mach-rpc/irq.c | 6 |
3 files changed, 23 insertions, 1 deletions
diff --git a/arch/arm/mach-rpc/Makefile b/arch/arm/mach-rpc/Makefile index aa77bc9efbbb..dfa405c0cfde 100644 --- a/arch/arm/mach-rpc/Makefile +++ b/arch/arm/mach-rpc/Makefile @@ -4,7 +4,7 @@ # Object file lists. -obj-y := dma.o irq.o riscpc.o +obj-y := dma.o fiq.o irq.o riscpc.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-rpc/fiq.S b/arch/arm/mach-rpc/fiq.S new file mode 100644 index 000000000000..48ddd57db16e --- /dev/null +++ b/arch/arm/mach-rpc/fiq.S @@ -0,0 +1,16 @@ +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <mach/hardware.h> +#include <mach/entry-macro.S> + + .text + + .global rpc_default_fiq_end +ENTRY(rpc_default_fiq_start) + mov r12, #ioc_base_high + .if ioc_base_low + orr r12, r12, #ioc_base_low + .endif + strb r12, [r12, #0x38] @ Disable FIQ register + subs pc, lr, #4 +rpc_default_fiq_end: diff --git a/arch/arm/mach-rpc/irq.c b/arch/arm/mach-rpc/irq.c index 2e1b5309fbab..cf0e669eaf1a 100644 --- a/arch/arm/mach-rpc/irq.c +++ b/arch/arm/mach-rpc/irq.c @@ -5,6 +5,7 @@ #include <asm/mach/irq.h> #include <asm/hardware/iomd.h> #include <asm/irq.h> +#include <asm/fiq.h> static void iomd_ack_irq_a(struct irq_data *d) { @@ -112,6 +113,8 @@ static struct irq_chip iomd_fiq_chip = { .irq_unmask = iomd_unmask_irq_fiq, }; +extern unsigned char rpc_default_fiq_start, rpc_default_fiq_end; + void __init rpc_init_irq(void) { unsigned int irq, flags; @@ -121,6 +124,9 @@ void __init rpc_init_irq(void) iomd_writeb(0, IOMD_FIQMASK); iomd_writeb(0, IOMD_DMAMASK); + set_fiq_handler(&rpc_default_fiq_start, + &rpc_default_fiq_end - &rpc_default_fiq_start); + for (irq = 0; irq < NR_IRQS; irq++) { flags = IRQF_VALID; |