1 /*
2 * Copyright (c) 2006 Jeffrey M. Hsu. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Jeffrey M. Hsu.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of The DragonFly Project nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific, prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/types.h>
34 #include <sys/malloc.h>
35 #include <sys/objcache.h>
36
37 struct acpicache {
38 struct objcache *cache;
39 struct objcache_malloc_args args;
40 };
41
42 /*
43 * Add some magic numbers to catch double-frees earlier rather
44 * then later.
45 */
46 struct acpiobjhead {
47 int state;
48 void *cache;
49 const char *func;
50 int line;
51 int unused;
52 };
53
54 #define TRACK_ALLOCATED 0x7AF45533
55 #define TRACK_FREED 0x7B056644
56
57 #define OBJHEADSIZE sizeof(struct acpiobjhead)
58
59 #include "acpi.h"
60
61 ACPI_STATUS
AcpiOsCreateCache(char * CacheName,UINT16 ObjectSize,UINT16 MaxDepth,ACPI_CACHE_T ** ReturnCache)62 AcpiOsCreateCache(char *CacheName, UINT16 ObjectSize, UINT16 MaxDepth,
63 ACPI_CACHE_T **ReturnCache)
64 {
65 ACPI_CACHE_T *cache;
66
67 cache = kmalloc(sizeof(*cache), M_TEMP, M_WAITOK);
68 cache->args.objsize = OBJHEADSIZE + ObjectSize;
69 cache->args.mtype = M_CACHE;
70 cache->cache = objcache_create(CacheName, 0, 0, NULL, NULL,
71 NULL, objcache_malloc_alloc, objcache_malloc_free, &cache->args);
72 *ReturnCache = cache;
73 return AE_OK;
74 }
75
76 ACPI_STATUS
AcpiOsDeleteCache(ACPI_CACHE_T * Cache)77 AcpiOsDeleteCache(ACPI_CACHE_T *Cache)
78 {
79 objcache_destroy(Cache->cache);
80 kfree(Cache, M_TEMP);
81 return AE_OK;
82 }
83
84
85 ACPI_STATUS
AcpiOsPurgeCache(ACPI_CACHE_T * Cache)86 AcpiOsPurgeCache(ACPI_CACHE_T *Cache)
87 {
88 struct objcache *reclaimlist[] = { Cache->cache };
89
90 objcache_reclaimlist(reclaimlist, 1);
91 return AE_OK;
92 }
93
94 void *
AcpiOsAcquireObject(ACPI_CACHE_T * Cache)95 AcpiOsAcquireObject(ACPI_CACHE_T *Cache)
96 {
97 struct acpiobjhead *head;
98
99 head = objcache_get(Cache->cache, M_WAITOK);
100 bzero(head, Cache->args.objsize);
101 head->state = TRACK_ALLOCATED;
102 #ifdef ACPI_DEBUG_CACHE
103 head->cache = Cache;
104 head->func = "nowhere";
105 head->line = 0;
106 #endif
107 return (head + 1);
108 }
109
110 ACPI_STATUS
111 #ifdef ACPI_DEBUG_CACHE
_AcpiOsReleaseObject(ACPI_CACHE_T * Cache,void * Object,const char * func,int line)112 _AcpiOsReleaseObject(ACPI_CACHE_T *Cache, void *Object,
113 const char *func, int line)
114 #else
115 AcpiOsReleaseObject(ACPI_CACHE_T *Cache, void *Object)
116 #endif
117 {
118 struct acpiobjhead *head = (void *)((char *)Object - OBJHEADSIZE);
119
120 #ifdef ACPI_DEBUG_CACHE
121 if (head->cache != Cache) {
122 kprintf("%s: object %p belongs to %p, not %p\n",
123 __func__, Object, head->cache, Cache);
124 }
125 #endif
126 if (head->state != TRACK_ALLOCATED) {
127 if (head->state == TRACK_FREED) {
128 #ifdef ACPI_DEBUG_CACHE
129 kprintf("%s: Double Free %p, %s:%d, first %s:%d\n",
130 __func__, Object, func, line, head->func,
131 head->line);
132 #else
133 kprintf("%s: Double Free %p\n", __func__, Object);
134 #endif
135 } else
136 kprintf("AcpiOsReleaseObject: Bad object %p (%08x)\n",
137 Object, head->state);
138 return AE_OK;
139 }
140 head->state = TRACK_FREED;
141 #ifdef ACPI_DEBUG_CACHE
142 head->func = func;
143 head->line = line;
144 #endif
145 objcache_put(Cache->cache, head);
146 return AE_OK;
147 }
148