From d550bbd40c0e10aefa05103dadbe0ae42e683707 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 28 Mar 2012 18:30:03 +0100 Subject: Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for Sparc. Signed-off-by: David Howells cc: sparclinux@vger.kernel.org --- arch/sparc/include/asm/perfctr.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'arch/sparc/include/asm/perfctr.h') diff --git a/arch/sparc/include/asm/perfctr.h b/arch/sparc/include/asm/perfctr.h index 8d8720a8770d..3332d2cba6c1 100644 --- a/arch/sparc/include/asm/perfctr.h +++ b/arch/sparc/include/asm/perfctr.h @@ -168,6 +168,29 @@ struct vcounter_struct { unsigned long long vcnt1; }; +#else /* !(__KERNEL__) */ + +#ifndef CONFIG_SPARC32 + +/* Performance counter register access. */ +#define read_pcr(__p) __asm__ __volatile__("rd %%pcr, %0" : "=r" (__p)) +#define write_pcr(__p) __asm__ __volatile__("wr %0, 0x0, %%pcr" : : "r" (__p)) +#define read_pic(__p) __asm__ __volatile__("rd %%pic, %0" : "=r" (__p)) + +/* Blackbird errata workaround. See commentary in + * arch/sparc64/kernel/smp.c:smp_percpu_timer_interrupt() + * for more information. + */ +#define write_pic(__p) \ + __asm__ __volatile__("ba,pt %%xcc, 99f\n\t" \ + " nop\n\t" \ + ".align 64\n" \ + "99:wr %0, 0x0, %%pic\n\t" \ + "rd %%pic, %%g0" : : "r" (__p)) +#define reset_pic() write_pic(0) + +#endif /* !CONFIG_SPARC32 */ + #endif /* !(__KERNEL__) */ #endif /* !(PERF_COUNTER_API) */ -- cgit v1.2.1