145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
|
|
/******************************************************************************
|
|
*
|
|
* Name: aclinuxex.h - Extra OS specific defines, etc. for Linux
|
|
*
|
|
* Copyright (C) 2000 - 2020, 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.
|
|
*/
|
|
static inline void *acpi_os_allocate(acpi_size size)
|
|
{
|
|
return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
|
|
}
|
|
|
|
static inline void *acpi_os_allocate_zeroed(acpi_size size)
|
|
{
|
|
return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
|
|
}
|
|
|
|
static inline void acpi_os_free(void *memory)
|
|
{
|
|
kfree(memory);
|
|
}
|
|
|
|
static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
|
|
{
|
|
return kmem_cache_zalloc(cache,
|
|
irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
|
|
}
|
|
|
|
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
|
|
*/
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __ACLINUXEX_H__ */
|