osfmk/chud/chud_memory.c

   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 }