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d13bd5a6 LZ |
1 | /****************************************************************************** |
2 | * | |
3 | * Name: aclinuxex.h - Extra OS specific defines, etc. for Linux | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
d13bd5a6 LZ |
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 | ||
daba25d6 LZ |
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 | ||
d13bd5a6 LZ |
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 | ||
4d946f79 LZ |
127 | static inline u8 acpi_os_readable(void *pointer, acpi_size length) |
128 | { | |
129 | return TRUE; | |
130 | } | |
131 | ||
f8d31489 LZ |
132 | static inline acpi_status acpi_os_initialize_command_signals(void) |
133 | { | |
134 | return AE_OK; | |
135 | } | |
136 | ||
137 | static inline void acpi_os_terminate_command_signals(void) | |
138 | { | |
5431b654 | 139 | return; |
f8d31489 LZ |
140 | } |
141 | ||
d13bd5a6 LZ |
142 | /* |
143 | * OSL interfaces added by Linux | |
144 | */ | |
145 | void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); | |
146 | ||
147 | #endif /* __KERNEL__ */ | |
148 | ||
149 | #endif /* __ACLINUXEX_H__ */ |