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powerpc: interrupt handler wrapper functions
Add wrapper functions (derived from x86 macros) for interrupt handler functions. This allows interrupt entry code to be written in C. Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,203 @@ | ||
| /* SPDX-License-Identifier: GPL-2.0-or-later */ | ||
| #ifndef _ASM_POWERPC_INTERRUPT_H | ||
| #define _ASM_POWERPC_INTERRUPT_H | ||
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| #include <linux/context_tracking.h> | ||
| #include <asm/ftrace.h> | ||
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| /** | ||
| * DECLARE_INTERRUPT_HANDLER_RAW - Declare raw interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| */ | ||
| #define DECLARE_INTERRUPT_HANDLER_RAW(func) \ | ||
| __visible long func(struct pt_regs *regs) | ||
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| /** | ||
| * DEFINE_INTERRUPT_HANDLER_RAW - Define raw interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| * | ||
| * @func is called from ASM entry code. | ||
| * | ||
| * This is a plain function which does no tracing, reconciling, etc. | ||
| * The macro is written so it acts as function definition. Append the | ||
| * body with a pair of curly brackets. | ||
| */ | ||
| #define DEFINE_INTERRUPT_HANDLER_RAW(func) \ | ||
| static __always_inline long ___##func(struct pt_regs *regs); \ | ||
| \ | ||
| __visible noinstr long func(struct pt_regs *regs) \ | ||
| { \ | ||
| long ret; \ | ||
| \ | ||
| ret = ___##func (regs); \ | ||
| \ | ||
| return ret; \ | ||
| } \ | ||
| \ | ||
| static __always_inline long ___##func(struct pt_regs *regs) | ||
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|
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| /** | ||
| * DECLARE_INTERRUPT_HANDLER - Declare synchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| */ | ||
| #define DECLARE_INTERRUPT_HANDLER(func) \ | ||
| __visible void func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DEFINE_INTERRUPT_HANDLER - Define synchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * | ||
| * @func is called from ASM entry code. | ||
| * | ||
| * The macro is written so it acts as function definition. Append the | ||
| * body with a pair of curly brackets. | ||
| */ | ||
| #define DEFINE_INTERRUPT_HANDLER(func) \ | ||
| static __always_inline void ___##func(struct pt_regs *regs); \ | ||
| \ | ||
| __visible noinstr void func(struct pt_regs *regs) \ | ||
| { \ | ||
| ___##func (regs); \ | ||
| } \ | ||
| \ | ||
| static __always_inline void ___##func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DECLARE_INTERRUPT_HANDLER_RET - Declare synchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| */ | ||
| #define DECLARE_INTERRUPT_HANDLER_RET(func) \ | ||
| __visible long func(struct pt_regs *regs) | ||
|
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||
| /** | ||
| * DEFINE_INTERRUPT_HANDLER_RET - Define synchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| * | ||
| * @func is called from ASM entry code. | ||
| * | ||
| * The macro is written so it acts as function definition. Append the | ||
| * body with a pair of curly brackets. | ||
| */ | ||
| #define DEFINE_INTERRUPT_HANDLER_RET(func) \ | ||
| static __always_inline long ___##func(struct pt_regs *regs); \ | ||
| \ | ||
| __visible noinstr long func(struct pt_regs *regs) \ | ||
| { \ | ||
| long ret; \ | ||
| \ | ||
| ret = ___##func (regs); \ | ||
| \ | ||
| return ret; \ | ||
| } \ | ||
| \ | ||
| static __always_inline long ___##func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DECLARE_INTERRUPT_HANDLER_ASYNC - Declare asynchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| */ | ||
| #define DECLARE_INTERRUPT_HANDLER_ASYNC(func) \ | ||
| __visible void func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DEFINE_INTERRUPT_HANDLER_ASYNC - Define asynchronous interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * | ||
| * @func is called from ASM entry code. | ||
| * | ||
| * The macro is written so it acts as function definition. Append the | ||
| * body with a pair of curly brackets. | ||
| */ | ||
| #define DEFINE_INTERRUPT_HANDLER_ASYNC(func) \ | ||
| static __always_inline void ___##func(struct pt_regs *regs); \ | ||
| \ | ||
| __visible noinstr void func(struct pt_regs *regs) \ | ||
| { \ | ||
| ___##func (regs); \ | ||
| } \ | ||
| \ | ||
| static __always_inline void ___##func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DECLARE_INTERRUPT_HANDLER_NMI - Declare NMI interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| */ | ||
| #define DECLARE_INTERRUPT_HANDLER_NMI(func) \ | ||
| __visible long func(struct pt_regs *regs) | ||
|
|
||
| /** | ||
| * DEFINE_INTERRUPT_HANDLER_NMI - Define NMI interrupt handler function | ||
| * @func: Function name of the entry point | ||
| * @returns: Returns a value back to asm caller | ||
| * | ||
| * @func is called from ASM entry code. | ||
| * | ||
| * The macro is written so it acts as function definition. Append the | ||
| * body with a pair of curly brackets. | ||
| */ | ||
| #define DEFINE_INTERRUPT_HANDLER_NMI(func) \ | ||
| static __always_inline long ___##func(struct pt_regs *regs); \ | ||
| \ | ||
| __visible noinstr long func(struct pt_regs *regs) \ | ||
| { \ | ||
| long ret; \ | ||
| \ | ||
| ret = ___##func (regs); \ | ||
| \ | ||
| return ret; \ | ||
| } \ | ||
| \ | ||
| static __always_inline long ___##func(struct pt_regs *regs) | ||
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| /* Interrupt handlers */ | ||
| DECLARE_INTERRUPT_HANDLER_NMI(machine_check_early); | ||
| DECLARE_INTERRUPT_HANDLER_NMI(hmi_exception_realmode); | ||
| DECLARE_INTERRUPT_HANDLER(SMIException); | ||
| DECLARE_INTERRUPT_HANDLER(handle_hmi_exception); | ||
| DECLARE_INTERRUPT_HANDLER(instruction_breakpoint_exception); | ||
| DECLARE_INTERRUPT_HANDLER(RunModeException); | ||
| DECLARE_INTERRUPT_HANDLER(single_step_exception); | ||
| DECLARE_INTERRUPT_HANDLER(program_check_exception); | ||
| DECLARE_INTERRUPT_HANDLER(alignment_exception); | ||
| DECLARE_INTERRUPT_HANDLER(StackOverflow); | ||
| DECLARE_INTERRUPT_HANDLER(stack_overflow_exception); | ||
| DECLARE_INTERRUPT_HANDLER(kernel_fp_unavailable_exception); | ||
| DECLARE_INTERRUPT_HANDLER(altivec_unavailable_exception); | ||
| DECLARE_INTERRUPT_HANDLER(vsx_unavailable_exception); | ||
| DECLARE_INTERRUPT_HANDLER(fp_unavailable_tm); | ||
| DECLARE_INTERRUPT_HANDLER(altivec_unavailable_tm); | ||
| DECLARE_INTERRUPT_HANDLER(vsx_unavailable_tm); | ||
| DECLARE_INTERRUPT_HANDLER(facility_unavailable_exception); | ||
| DECLARE_INTERRUPT_HANDLER_ASYNC(TAUException); | ||
| DECLARE_INTERRUPT_HANDLER(altivec_assist_exception); | ||
| DECLARE_INTERRUPT_HANDLER(unrecoverable_exception); | ||
| DECLARE_INTERRUPT_HANDLER(kernel_bad_stack); | ||
| DECLARE_INTERRUPT_HANDLER_NMI(system_reset_exception); | ||
| #ifdef CONFIG_PPC_BOOK3S_64 | ||
| DECLARE_INTERRUPT_HANDLER_ASYNC(machine_check_exception); | ||
| #else | ||
| DECLARE_INTERRUPT_HANDLER_NMI(machine_check_exception); | ||
| #endif | ||
| DECLARE_INTERRUPT_HANDLER(emulation_assist_interrupt); | ||
| DECLARE_INTERRUPT_HANDLER_RAW(do_slb_fault); | ||
| DECLARE_INTERRUPT_HANDLER(do_bad_slb_fault); | ||
| DECLARE_INTERRUPT_HANDLER_RET(do_hash_fault); | ||
| DECLARE_INTERRUPT_HANDLER_RET(do_page_fault); | ||
| DECLARE_INTERRUPT_HANDLER(do_bad_page_fault); | ||
|
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| DECLARE_INTERRUPT_HANDLER_ASYNC(timer_interrupt); | ||
| DECLARE_INTERRUPT_HANDLER_ASYNC(performance_monitor_exception); | ||
| DECLARE_INTERRUPT_HANDLER(WatchdogException); | ||
| DECLARE_INTERRUPT_HANDLER(unknown_exception); | ||
| DECLARE_INTERRUPT_HANDLER_ASYNC(unknown_async_exception); | ||
|
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| void replay_system_reset(void); | ||
| void replay_soft_interrupts(void); | ||
|
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| #endif /* _ASM_POWERPC_INTERRUPT_H */ |
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