0,0 → 1,133 |
/****************************************************************************** |
* |
* Name: aclinuxex.h - Extra OS specific defines, etc. for Linux |
* |
*****************************************************************************/ |
|
/* |
* Copyright (C) 2000 - 2015, Intel Corp. |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* 1. Redistributions of source code must retain the above copyright |
* notice, this list of conditions, and the following disclaimer, |
* without modification. |
* 2. Redistributions in binary form must reproduce at minimum a disclaimer |
* substantially similar to the "NO WARRANTY" disclaimer below |
* ("Disclaimer") and any redistribution must be conditioned upon |
* including a substantially similar Disclaimer requirement for further |
* binary redistribution. |
* 3. Neither the names of the above-listed copyright holders nor the names |
* of any contributors may be used to endorse or promote products derived |
* from this software without specific prior written permission. |
* |
* Alternatively, this software may be distributed under the terms of the |
* GNU General Public License ("GPL") version 2 as published by the Free |
* Software Foundation. |
* |
* NO WARRANTY |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
* POSSIBILITY OF SUCH DAMAGES. |
*/ |
|
#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 __init 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 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; \ |
}) |
|
static inline u8 acpi_os_readable(void *pointer, acpi_size length) |
{ |
return TRUE; |
} |
|
/* |
* OSL interfaces added by Linux |
*/ |
void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); |
|
#endif /* __KERNEL__ */ |
|
#endif /* __ACLINUXEX_H__ */ |