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139 lines
4.3 KiB
139 lines
4.3 KiB
/****************************************************************************** |
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* |
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* Name: aclinuxex.h - Extra OS specific defines, etc. for Linux |
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* |
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*****************************************************************************/ |
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/* |
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* Copyright (C) 2000 - 2015, Intel Corp. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions, and the following disclaimer, |
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* without modification. |
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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* substantially similar to the "NO WARRANTY" disclaimer below |
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* ("Disclaimer") and any redistribution must be conditioned upon |
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* including a substantially similar Disclaimer requirement for further |
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* binary redistribution. |
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* 3. Neither the names of the above-listed copyright holders nor the names |
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* of any contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") version 2 as published by the Free |
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* Software Foundation. |
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* |
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* NO WARRANTY |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGES. |
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*/ |
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#ifndef __ACLINUXEX_H__ |
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#define __ACLINUXEX_H__ |
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#ifdef __KERNEL__ |
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#ifndef ACPI_USE_NATIVE_DIVIDE |
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#ifndef ACPI_DIV_64_BY_32 |
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#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ |
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do { \ |
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u64 (__n) = ((u64) n_hi) << 32 | (n_lo); \ |
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(r32) = do_div ((__n), (d32)); \ |
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(q32) = (u32) (__n); \ |
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} while (0) |
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#endif |
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#ifndef ACPI_SHIFT_RIGHT_64 |
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#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ |
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do { \ |
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(n_lo) >>= 1; \ |
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(n_lo) |= (((n_hi) & 1) << 31); \ |
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(n_hi) >>= 1; \ |
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} while (0) |
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#endif |
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#endif |
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/* |
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* Overrides for in-kernel ACPICA |
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*/ |
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acpi_status __init acpi_os_initialize(void); |
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acpi_status acpi_os_terminate(void); |
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/* |
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* The irqs_disabled() check is for resume from RAM. |
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* Interrupts are off during resume, just like they are for boot. |
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* However, boot has (system_state != SYSTEM_RUNNING) |
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* to quiet __might_sleep() in kmalloc() and resume does not. |
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*/ |
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static inline void *acpi_os_allocate(acpi_size size) |
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{ |
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return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
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} |
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static inline void *acpi_os_allocate_zeroed(acpi_size size) |
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{ |
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return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
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} |
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static inline void acpi_os_free(void *memory) |
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{ |
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kfree(memory); |
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} |
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static inline void *acpi_os_acquire_object(acpi_cache_t * cache) |
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{ |
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return kmem_cache_zalloc(cache, |
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irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
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} |
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static inline acpi_thread_id acpi_os_get_thread_id(void) |
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{ |
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return (acpi_thread_id) (unsigned long)current; |
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} |
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/* |
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* When lockdep is enabled, the spin_lock_init() macro stringifies it's |
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* argument and uses that as a name for the lock in debugging. |
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* By executing spin_lock_init() in a macro the key changes from "lock" for |
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* all locks to the name of the argument of acpi_os_create_lock(), which |
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* prevents lockdep from reporting false positives for ACPICA locks. |
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*/ |
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#define acpi_os_create_lock(__handle) \ |
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({ \ |
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spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \ |
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if (lock) { \ |
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*(__handle) = lock; \ |
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spin_lock_init(*(__handle)); \ |
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} \ |
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lock ? AE_OK : AE_NO_MEMORY; \ |
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}) |
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static inline u8 acpi_os_readable(void *pointer, acpi_size length) |
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{ |
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return TRUE; |
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} |
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/* |
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* OSL interfaces added by Linux |
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*/ |
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void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); |
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#endif /* __KERNEL__ */ |
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#endif /* __ACLINUXEX_H__ */
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