The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/osfmk/chud/chud_memory.c

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    1 /*
    2  * Copyright (c) 2003-2007 Apple 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 #include <mach/vm_param.h>
   30 #include <chud/chud_xnu.h>
   31 #include <machine/machine_routines.h>
   32 
   33 extern unsigned int IODefaultCacheBits(addr64_t pa);
   34 extern unsigned int vm_page_free_count;
   35 extern unsigned int vm_page_inactive_count;
   36 
   37 __private_extern__ uint64_t 
   38 chudxnu_avail_memory_size(void)
   39 {
   40     return max_mem;
   41 }
   42 
   43 __private_extern__ uint64_t 
   44 chudxnu_phys_memory_size(void)
   45 {
   46     return mem_actual;
   47 }
   48 
   49 /* 
   50  * This function is not intended to be valid for any amount of time,
   51  * it is just an instantaneous snapshot of the current free memory size.
   52  */
   53 __private_extern__
   54 uint64_t chudxnu_free_memory_size(void)
   55 {
   56     return (uint64_t)vm_page_free_count * (uint64_t)page_size;
   57 }
   58 
   59 /*
   60  * This function is not intended to be valid for any amount of time,
   61  * it is just an instantaneous snapshot of the current inactive memory size.
   62  */
   63 __private_extern__
   64 uint64_t chudxnu_inactive_memory_size(void)
   65 {
   66         return (uint64_t)vm_page_inactive_count * (uint64_t)page_size;
   67 }
   68 
   69 #pragma mark *** DEPRECATED ***
   70 
   71 // DEPRECATED
   72 __private_extern__
   73 vm_offset_t chudxnu_io_map(uint64_t phys_addr, vm_size_t size)
   74 {
   75     return ml_io_map(phys_addr, size); // XXXXX limited to first 2GB XXXXX
   76 }
   77 
   78 // DEPRECATED
   79 __private_extern__ uint32_t
   80 chudxnu_phys_addr_wimg(uint64_t phys_addr)
   81 {
   82     return IODefaultCacheBits(phys_addr);
   83 }

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