xref: /illumos-gate/usr/src/uts/intel/sys/acpi/platform/aclinuxex.h (revision 35786f6866ae52207d0f1a25fe7ca5f652f32ce0)
1 /******************************************************************************
2  *
3  * Name: aclinuxex.h - Extra OS specific defines, etc. for Linux
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #ifndef __ACLINUXEX_H__
153 #define __ACLINUXEX_H__
154 
155 #ifdef __KERNEL__
156 
157 #ifndef ACPI_USE_NATIVE_DIVIDE
158 
159 #ifndef ACPI_DIV_64_BY_32
160 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
161     do { \
162         UINT64 (__n) = ((UINT64) n_hi) << 32 | (n_lo); \
163         (r32) = do_div ((__n), (d32)); \
164         (q32) = (UINT32) (__n); \
165     } while (0)
166 #endif
167 
168 #ifndef ACPI_SHIFT_RIGHT_64
169 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
170     do { \
171         (n_lo) >>= 1; \
172         (n_lo) |= (((n_hi) & 1) << 31); \
173         (n_hi) >>= 1; \
174     } while (0)
175 #endif
176 
177 #endif
178 
179 /*
180  * Overrides for in-kernel ACPICA
181  */
182 ACPI_STATUS ACPI_INIT_FUNCTION AcpiOsInitialize (
183     void);
184 
185 ACPI_STATUS AcpiOsTerminate (
186     void);
187 
188 /*
189  * The irqs_disabled() check is for resume from RAM.
190  * Interrupts are off during resume, just like they are for boot.
191  * However, boot has  (system_state != SYSTEM_RUNNING)
192  * to quiet __might_sleep() in kmalloc() and resume does not.
193  */
194 static inline void *
AcpiOsAllocate(ACPI_SIZE Size)195 AcpiOsAllocate (
196     ACPI_SIZE               Size)
197 {
198     return kmalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
199 }
200 
201 static inline void *
AcpiOsAllocateZeroed(ACPI_SIZE Size)202 AcpiOsAllocateZeroed (
203     ACPI_SIZE               Size)
204 {
205     return kzalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
206 }
207 
208 static inline void
AcpiOsFree(void * Memory)209 AcpiOsFree (
210     void                   *Memory)
211 {
212     kfree (Memory);
213 }
214 
215 static inline void *
AcpiOsAcquireObject(ACPI_CACHE_T * Cache)216 AcpiOsAcquireObject (
217     ACPI_CACHE_T           *Cache)
218 {
219     return kmem_cache_zalloc (Cache,
220         irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
221 }
222 
223 static inline ACPI_THREAD_ID
AcpiOsGetThreadId(void)224 AcpiOsGetThreadId (
225     void)
226 {
227     return (ACPI_THREAD_ID) (unsigned long) current;
228 }
229 
230 /*
231  * When lockdep is enabled, the spin_lock_init() macro stringifies it's
232  * argument and uses that as a name for the lock in debugging.
233  * By executing spin_lock_init() in a macro the key changes from "lock" for
234  * all locks to the name of the argument of acpi_os_create_lock(), which
235  * prevents lockdep from reporting false positives for ACPICA locks.
236  */
237 #define AcpiOsCreateLock(__Handle) \
238     ({ \
239         spinlock_t *Lock = ACPI_ALLOCATE(sizeof(*Lock)); \
240         if (Lock) { \
241             *(__Handle) = Lock; \
242             spin_lock_init(*(__Handle)); \
243         } \
244         Lock ? AE_OK : AE_NO_MEMORY; \
245     })
246 
247 static inline BOOLEAN
AcpiOsReadable(void * Pointer,ACPI_SIZE Length)248 AcpiOsReadable (
249     void                    *Pointer,
250     ACPI_SIZE               Length)
251 {
252     return TRUE;
253 }
254 
255 static inline ACPI_STATUS
AcpiOsInitializeDebugger(void)256 AcpiOsInitializeDebugger (
257     void)
258 {
259     return AE_OK;
260 }
261 
262 static inline void
AcpiOsTerminateDebugger(void)263 AcpiOsTerminateDebugger (
264     void)
265 {
266     return;
267 }
268 
269 
270 /*
271  * OSL interfaces added by Linux
272  */
273 
274 #endif /* __KERNEL__ */
275 
276 #endif /* __ACLINUXEX_H__ */
277