diff options
Diffstat (limited to 'arch/xtensa/include/asm/processor.h')
| -rw-r--r-- | arch/xtensa/include/asm/processor.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index b61bdf0eea25..83e2e4bc01ba 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -1,11 +1,10 @@ /* - * include/asm-xtensa/processor.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2001 - 2008 Tensilica Inc. + * Copyright (C) 2015 Cadence Design Systems Inc. */ #ifndef _XTENSA_PROCESSOR_H @@ -45,6 +44,14 @@ #define STACK_TOP_MAX STACK_TOP /* + * General exception cause assigned to fake NMI. Fake NMI needs to be handled + * differently from other interrupts, but it uses common kernel entry/exit + * code. + */ + +#define EXCCAUSE_MAPPED_NMI 62 + +/* * General exception cause assigned to debug exceptions. Debug exceptions go * to their own vector, rather than the general exception vectors (user, * kernel, double); and their specific causes are reported via DEBUGCAUSE @@ -65,10 +72,30 @@ #define VALID_DOUBLE_EXCEPTION_ADDRESS 64 +#define XTENSA_INT_LEVEL(intno) _XTENSA_INT_LEVEL(intno) +#define _XTENSA_INT_LEVEL(intno) XCHAL_INT##intno##_LEVEL + +#define XTENSA_INTLEVEL_MASK(level) _XTENSA_INTLEVEL_MASK(level) +#define _XTENSA_INTLEVEL_MASK(level) (XCHAL_INTLEVEL##level##_MASK) + +#define IS_POW2(v) (((v) & ((v) - 1)) == 0) + +#define PROFILING_INTLEVEL XTENSA_INT_LEVEL(XCHAL_PROFILING_INTERRUPT) + /* LOCKLEVEL defines the interrupt level that masks all * general-purpose interrupts. */ +#if defined(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) && \ + defined(XCHAL_PROFILING_INTERRUPT) && \ + PROFILING_INTLEVEL == XCHAL_EXCM_LEVEL && \ + XCHAL_EXCM_LEVEL > 1 && \ + IS_POW2(XTENSA_INTLEVEL_MASK(PROFILING_INTLEVEL)) +#define LOCKLEVEL (XCHAL_EXCM_LEVEL - 1) +#else #define LOCKLEVEL XCHAL_EXCM_LEVEL +#endif +#define TOPLEVEL XCHAL_EXCM_LEVEL +#define XTENSA_FAKE_NMI (LOCKLEVEL < TOPLEVEL) /* WSBITS and WBBITS are the width of the WINDOWSTART and WINDOWBASE * registers |