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author | Guo Ren <ren_guo@c-sky.com> | 2018-09-05 14:25:15 +0800 |
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committer | Guo Ren <ren_guo@c-sky.com> | 2018-10-26 00:54:22 +0800 |
commit | e38a5272baaa81b31680389efdec0c9008e17446 (patch) | |
tree | 061825536f867bd3f35d57afb201b3fb0d1204b3 | |
parent | dd3ef10ea295f8f4181e6044fb19444cad7c6aab (diff) | |
download | linux-stable-e38a5272baaa81b31680389efdec0c9008e17446.tar.gz linux-stable-e38a5272baaa81b31680389efdec0c9008e17446.tar.bz2 linux-stable-e38a5272baaa81b31680389efdec0c9008e17446.zip |
csky: IRQ handling
This patch adds IRQ handling files.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
-rw-r--r-- | arch/csky/include/asm/irqflags.h | 49 | ||||
-rw-r--r-- | arch/csky/kernel/irq.c | 22 |
2 files changed, 71 insertions, 0 deletions
diff --git a/arch/csky/include/asm/irqflags.h b/arch/csky/include/asm/irqflags.h new file mode 100644 index 000000000000..9e3a569a55d6 --- /dev/null +++ b/arch/csky/include/asm/irqflags.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_IRQFLAGS_H +#define __ASM_CSKY_IRQFLAGS_H +#include <abi/reg_ops.h> + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + + flags = mfcr("psr"); + asm volatile("psrclr ie\n":::"memory"); + return flags; +} +#define arch_local_irq_save arch_local_irq_save + +static inline void arch_local_irq_enable(void) +{ + asm volatile("psrset ee, ie\n":::"memory"); +} +#define arch_local_irq_enable arch_local_irq_enable + +static inline void arch_local_irq_disable(void) +{ + asm volatile("psrclr ie\n":::"memory"); +} +#define arch_local_irq_disable arch_local_irq_disable + +static inline unsigned long arch_local_save_flags(void) +{ + return mfcr("psr"); +} +#define arch_local_save_flags arch_local_save_flags + +static inline void arch_local_irq_restore(unsigned long flags) +{ + mtcr("psr", flags); +} +#define arch_local_irq_restore arch_local_irq_restore + +static inline int arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1<<6)); +} +#define arch_irqs_disabled_flags arch_irqs_disabled_flags + +#include <asm-generic/irqflags.h> + +#endif /* __ASM_CSKY_IRQFLAGS_H */ diff --git a/arch/csky/kernel/irq.c b/arch/csky/kernel/irq.c new file mode 100644 index 000000000000..03a1930f1cbb --- /dev/null +++ b/arch/csky/kernel/irq.c @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irqchip.h> +#include <asm/traps.h> +#include <asm/smp.h> + +void __init init_IRQ(void) +{ + irqchip_init(); +#ifdef CONFIG_SMP + setup_smp_ipi(); +#endif +} + +asmlinkage void __irq_entry csky_do_IRQ(struct pt_regs *regs) +{ + handle_arch_irq(regs); +} |