Lv Zheng | d13bd5a | 2014-05-12 15:46:32 +0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Name: aclinuxex.h - Extra OS specific defines, etc. for Linux |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
David E. Box | 82a8094 | 2015-02-05 15:20:45 +0800 | [diff] [blame^] | 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
Lv Zheng | d13bd5a | 2014-05-12 15:46:32 +0800 | [diff] [blame] | 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 | |
Lv Zheng | daba25d | 2014-07-16 16:58:00 +0800 | [diff] [blame] | 49 | #ifndef ACPI_USE_NATIVE_DIVIDE |
| 50 | |
| 51 | #ifndef ACPI_DIV_64_BY_32 |
| 52 | #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ |
| 53 | do { \ |
| 54 | u64 (__n) = ((u64) n_hi) << 32 | (n_lo); \ |
| 55 | (r32) = do_div ((__n), (d32)); \ |
| 56 | (q32) = (u32) (__n); \ |
| 57 | } while (0) |
| 58 | #endif |
| 59 | |
| 60 | #ifndef ACPI_SHIFT_RIGHT_64 |
| 61 | #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ |
| 62 | do { \ |
| 63 | (n_lo) >>= 1; \ |
| 64 | (n_lo) |= (((n_hi) & 1) << 31); \ |
| 65 | (n_hi) >>= 1; \ |
| 66 | } while (0) |
| 67 | #endif |
| 68 | |
| 69 | #endif |
| 70 | |
Lv Zheng | d13bd5a | 2014-05-12 15:46:32 +0800 | [diff] [blame] | 71 | /* |
| 72 | * Overrides for in-kernel ACPICA |
| 73 | */ |
| 74 | acpi_status __init acpi_os_initialize(void); |
| 75 | |
| 76 | acpi_status acpi_os_terminate(void); |
| 77 | |
| 78 | /* |
| 79 | * The irqs_disabled() check is for resume from RAM. |
| 80 | * Interrupts are off during resume, just like they are for boot. |
| 81 | * However, boot has (system_state != SYSTEM_RUNNING) |
| 82 | * to quiet __might_sleep() in kmalloc() and resume does not. |
| 83 | */ |
| 84 | static inline void *acpi_os_allocate(acpi_size size) |
| 85 | { |
| 86 | return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
| 87 | } |
| 88 | |
| 89 | static inline void *acpi_os_allocate_zeroed(acpi_size size) |
| 90 | { |
| 91 | return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
| 92 | } |
| 93 | |
| 94 | static inline void acpi_os_free(void *memory) |
| 95 | { |
| 96 | kfree(memory); |
| 97 | } |
| 98 | |
| 99 | static inline void *acpi_os_acquire_object(acpi_cache_t * cache) |
| 100 | { |
| 101 | return kmem_cache_zalloc(cache, |
| 102 | irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); |
| 103 | } |
| 104 | |
| 105 | static inline acpi_thread_id acpi_os_get_thread_id(void) |
| 106 | { |
| 107 | return (acpi_thread_id) (unsigned long)current; |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | * When lockdep is enabled, the spin_lock_init() macro stringifies it's |
| 112 | * argument and uses that as a name for the lock in debugging. |
| 113 | * By executing spin_lock_init() in a macro the key changes from "lock" for |
| 114 | * all locks to the name of the argument of acpi_os_create_lock(), which |
| 115 | * prevents lockdep from reporting false positives for ACPICA locks. |
| 116 | */ |
| 117 | #define acpi_os_create_lock(__handle) \ |
| 118 | ({ \ |
| 119 | spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \ |
| 120 | if (lock) { \ |
| 121 | *(__handle) = lock; \ |
| 122 | spin_lock_init(*(__handle)); \ |
| 123 | } \ |
| 124 | lock ? AE_OK : AE_NO_MEMORY; \ |
| 125 | }) |
| 126 | |
Lv Zheng | d13bd5a | 2014-05-12 15:46:32 +0800 | [diff] [blame] | 127 | /* |
| 128 | * OSL interfaces added by Linux |
| 129 | */ |
| 130 | void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); |
| 131 | |
| 132 | #endif /* __KERNEL__ */ |
| 133 | |
| 134 | #endif /* __ACLINUXEX_H__ */ |