projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 89b3af67 A |
1 | /* |
| 2 | * Copyright (c) 2005 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | ||
| 29 | ||
| 30 | #include <kern/page_decrypt.h> | |
| 31 | #include <kern/task.h> | |
| 32 | #include <machine/commpage.h> | |
| 33 | ||
| 34 | /*#include <sys/kernel.h> */ | |
| 35 | extern int hz; /* system clock's frequency */ | |
| 36 | extern void* dsmos_blobs[]; | |
| 37 | extern int dsmos_blob_count; | |
| 38 | ||
| 39 | /* #include <sys/proc.h> */ | |
| 40 | extern int tsleep(void *chan, int pri, const char *wmesg, int timo); | |
| 41 | ||
| 42 | /* #include <sys/param.h> */ | |
| 43 | #define PZERO 22 /* No longer magic, shouldn't be here. XXX */ | |
| 44 | ||
| 45 | static int _dsmos_wait_for_callback(const void*,void*); | |
| 46 | ||
| 47 | static dsmos_page_transform_hook_t dsmos_hook = _dsmos_wait_for_callback; | |
| 48 | ||
| 49 | int | |
| 50 | _dsmos_wait_for_callback(const void* from, void *to) | |
| 51 | { | |
| 52 | /* printf("%s\n", __FUNCTION__); */ | |
| 53 | while ( (dsmos_hook == NULL) || (dsmos_hook == _dsmos_wait_for_callback) ) | |
| 54 | tsleep(&dsmos_hook, PZERO, "dsmos", hz / 10); | |
| 55 | ||
| 56 | return (*dsmos_hook) (from, to); | |
| 57 | } | |
| 58 | ||
| 59 | void | |
| 60 | dsmos_page_transform_hook(dsmos_page_transform_hook_t hook, | |
| 61 | void (*commpage_setup_dsmos_blob)(void**, int)) | |
| 62 | { | |
| 63 | #ifdef i386 | |
| 64 | /* finish initializing the commpage here */ | |
| 65 | (*commpage_setup_dsmos_blob)(dsmos_blobs, dsmos_blob_count); | |
| 66 | #endif | |
| 67 | ||
| 68 | /* set the hook now - new callers will run with it */ | |
| 69 | dsmos_hook = hook; | |
| 70 | } | |
| 71 | ||
| 72 | int | |
| 73 | dsmos_page_transform(const void* from, void* to) | |
| 74 | { | |
| 75 | /* printf("%s\n", __FUNCTION__); */ | |
| 76 | if (dsmos_hook == NULL) | |
| 77 | return KERN_FAILURE; | |
| 78 | return (*dsmos_hook) (from, to); | |
| 79 | } | |
| 80 |