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| author |   Max Filippov <jcmvbkbc@gmail.com> | 2013-12-01 12:04:57 +0400 |
|---|---|---|
| committer |   Chris Zankel <chris@zankel.net> | 2014-01-14 10:19:58 -0800 |
| commit | 26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50 (patch) | |
| tree | 5104a9c1e12dd3728b05db5b21b5033bd7b648d2 /arch/xtensa/include/asm/processor.h | |
| parent | xtensa: clear timer IRQ unconditionally in its handler (diff) | |
| download | linux-dev-26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50.tar.xz linux-dev-26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50.zip | |
xtensa: add MX irqchip
MX is an interrupt distributor used in some SMP-capable xtensa
configurations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/include/asm/processor.h')
| -rw-r--r-- | arch/xtensa/include/asm/processor.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index 7e409a5b0ec5..abb59708a3b7 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -191,5 +191,25 @@ extern unsigned long get_wchan(struct task_struct *p); #define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);}) #define get_sr(sr) ({unsigned int v; RSR(v,sr); v; }) +#ifndef XCHAL_HAVE_EXTERN_REGS +#define XCHAL_HAVE_EXTERN_REGS 0 +#endif + +#if XCHAL_HAVE_EXTERN_REGS + +static inline void set_er(unsigned long value, unsigned long addr) +{ + asm volatile ("wer %0, %1" : : "a" (value), "a" (addr) : "memory"); +} + +static inline unsigned long get_er(unsigned long addr) +{ + register unsigned long value; + asm volatile ("rer %0, %1" : "=a" (value) : "a" (addr) : "memory"); + return value; +} + +#endif /* XCHAL_HAVE_EXTERN_REGS */ + #endif /* __ASSEMBLY__ */ #endif /* _XTENSA_PROCESSOR_H */ |