/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 *//****************************************************************************** * * Name: aclinuxex.h - Extra OS specific defines, etc. for Linux * * Copyright (C) 2000 - 2026, Intel Corp. * *****************************************************************************/ #ifndef __ACLINUXEX_H__#define __ACLINUXEX_H__ #ifdef __KERNEL__ #ifndef ACPI_USE_NATIVE_DIVIDE #ifndef ACPI_DIV_64_BY_32#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \	do { \		u64 (__n) = ((u64) n_hi) << 32 | (n_lo); \		(r32) = do_div ((__n), (d32)); \		(q32) = (u32) (__n); \	} while (0)#endif #ifndef ACPI_SHIFT_RIGHT_64#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \	do { \		(n_lo) >>= 1; \		(n_lo) |= (((n_hi) & 1) << 31); \		(n_hi) >>= 1; \	} while (0)#endif #endif /* * Overrides for in-kernel ACPICA */acpi_status ACPI_INIT_FUNCTION acpi_os_initialize(void); acpi_status acpi_os_terminate(void); /* * The irqs_disabled() check is for resume from RAM. * Interrupts are off during resume, just like they are for boot. * However, boot has  (system_state != SYSTEM_RUNNING) * to quiet __might_sleep() in kmalloc() and resume does not. * * These specialized allocators have to be macros for their allocations to be * accounted separately (to have separate alloc_tag). */#define acpi_os_allocate(_size)	\		kmalloc(_size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL) #define acpi_os_allocate_zeroed(_size)	\		kzalloc(_size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL) #define acpi_os_acquire_object(_cache)	\		kmem_cache_zalloc(_cache, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL) static inline void acpi_os_free(void *memory){	kfree(memory);} static inline acpi_thread_id acpi_os_get_thread_id(void){	return (acpi_thread_id) (unsigned long)current;} /* * When lockdep is enabled, the spin_lock_init() macro stringifies it's * argument and uses that as a name for the lock in debugging. * By executing spin_lock_init() in a macro the key changes from "lock" for * all locks to the name of the argument of acpi_os_create_lock(), which * prevents lockdep from reporting false positives for ACPICA locks. */#define acpi_os_create_lock(__handle) \	({ \		spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \		if (lock) { \			*(__handle) = lock; \			spin_lock_init(*(__handle)); \		} \		lock ? AE_OK : AE_NO_MEMORY; \	})  #define acpi_os_create_raw_lock(__handle) \	({ \		raw_spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \		if (lock) { \			*(__handle) = lock; \			raw_spin_lock_init(*(__handle)); \		} \		lock ? AE_OK : AE_NO_MEMORY; \	}) static inline acpi_cpu_flags acpi_os_acquire_raw_lock(acpi_raw_spinlock lockp){	acpi_cpu_flags flags; 	raw_spin_lock_irqsave(lockp, flags);	return flags;} static inline void acpi_os_release_raw_lock(acpi_raw_spinlock lockp,					    acpi_cpu_flags flags){	raw_spin_unlock_irqrestore(lockp, flags);} static inline void acpi_os_delete_raw_lock(acpi_raw_spinlock handle){	ACPI_FREE(handle);} static inline u8 acpi_os_readable(void *pointer, acpi_size length){	return TRUE;} static inline acpi_status acpi_os_initialize_debugger(void){	return AE_OK;} static inline void acpi_os_terminate_debugger(void){	return;} /* * OSL interfaces added by Linux */#define acpi_ut_safe_strncpy	strscpy_pad #endif				/* __KERNEL__ */ #endif				/* __ACLINUXEX_H__ */