1 /****************************************************************************** 2 * 3 * Name: aclinuxex.h - Extra OS specific defines, etc. for Linux 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2014, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #ifndef __ACLINUXEX_H__ 45 #define __ACLINUXEX_H__ 46 47 #ifdef __KERNEL__ 48 49 /* 50 * Overrides for in-kernel ACPICA 51 */ 52 ACPI_STATUS __init AcpiOsInitialize ( 53 void); 54 55 ACPI_STATUS AcpiOsTerminate ( 56 void); 57 58 /* 59 * The irqs_disabled() check is for resume from RAM. 60 * Interrupts are off during resume, just like they are for boot. 61 * However, boot has (system_state != SYSTEM_RUNNING) 62 * to quiet __might_sleep() in kmalloc() and resume does not. 63 */ 64 static inline void * 65 AcpiOsAllocate ( 66 ACPI_SIZE Size) 67 { 68 return kmalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL); 69 } 70 71 static inline void * 72 AcpiOsAllocateZeroed ( 73 ACPI_SIZE Size) 74 { 75 return kzalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL); 76 } 77 78 static inline void 79 AcpiOsFree ( 80 void *Memory) 81 { 82 kfree (Memory); 83 } 84 85 static inline void * 86 AcpiOsAcquireObject ( 87 ACPI_CACHE_T *Cache) 88 { 89 return kmem_cache_zalloc (Cache, 90 irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL); 91 } 92 93 static inline ACPI_THREAD_ID 94 AcpiOsGetThreadId ( 95 void) 96 { 97 return (ACPI_THREAD_ID) (unsigned long) current; 98 } 99 100 /* 101 * When lockdep is enabled, the spin_lock_init() macro stringifies it's 102 * argument and uses that as a name for the lock in debugging. 103 * By executing spin_lock_init() in a macro the key changes from "lock" for 104 * all locks to the name of the argument of acpi_os_create_lock(), which 105 * prevents lockdep from reporting false positives for ACPICA locks. 106 */ 107 #define AcpiOsCreateLock(__Handle) \ 108 ({ \ 109 spinlock_t *Lock = ACPI_ALLOCATE(sizeof(*Lock)); \ 110 if (Lock) { \ 111 *(__Handle) = Lock; \ 112 spin_lock_init(*(__Handle)); \ 113 } \ 114 Lock ? AE_OK : AE_NO_MEMORY; \ 115 }) 116 117 void __iomem * 118 AcpiOsMapMemory ( 119 ACPI_PHYSICAL_ADDRESS Where, 120 ACPI_SIZE Length); 121 122 void 123 AcpiOsUnmapMemory ( 124 void __iomem *LogicalAddress, 125 ACPI_SIZE Size); 126 127 /* 128 * OSL interfaces added by Linux 129 */ 130 void 131 EarlyAcpiOsUnmapMemory ( 132 void __iomem *Virt, 133 ACPI_SIZE Size); 134 135 #endif /* __KERNEL__ */ 136 137 #endif /* __ACLINUXEX_H__ */ 138