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: /lib/modules/5.11.0-1022-aws/build/arch/arm/include/asm/ [ drwxr-xr-x ]
name : fiq.h /* SPDX-License-Identifier: GPL-2.0 */ /* * arch/arm/include/asm/fiq.h * * Support for FIQ on ARM architectures. * Written by Philip Blundell <philb@gnu.org>, 1998 * Re-written by Russell King * * NOTE: The FIQ mode registers are not magically preserved across * suspend/resume. * * Drivers which require these registers to be preserved across power * management operations must implement appropriate suspend/resume handlers to * save and restore them. */ #ifndef __ASM_FIQ_H #define __ASM_FIQ_H #include <asm/ptrace.h> struct fiq_handler { struct fiq_handler *next; /* Name */ const char *name; /* Called to ask driver to relinquish/ * reacquire FIQ * return zero to accept, or -<errno> */ int (*fiq_op)(void *, int relinquish); /* data for the relinquish/reacquire functions */ void *dev_id; }; extern int claim_fiq(struct fiq_handler *f); extern void release_fiq(struct fiq_handler *f); extern void set_fiq_handler(void *start, unsigned int length); extern void enable_fiq(int fiq); extern void disable_fiq(int fiq); /* helpers defined in fiqasm.S: */ extern void __set_fiq_regs(unsigned long const *regs); extern void __get_fiq_regs(unsigned long *regs); static inline void set_fiq_regs(struct pt_regs const *regs) { __set_fiq_regs(&regs->ARM_r8); } static inline void get_fiq_regs(struct pt_regs *regs) { __get_fiq_regs(&regs->ARM_r8); } #endif