osfmk/chud/chud_memory.c

   1 /*
   2  * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 #include <mach/vm_param.h>
  24 #include <chud/chud_xnu.h>
  25 #include <machine/machine_routines.h>
  26
  27 extern unsigned int IODefaultCacheBits(addr64_t pa);
  28 extern unsigned int vm_page_free_count;
  29
  30 __private_extern__
  31 uint64_t chudxnu_avail_memory_size(void)
  32 {
  33     return max_mem;
  34 }
  35
  36 __private_extern__
  37 uint64_t chudxnu_phys_memory_size(void)
  38 {
  39     return mem_actual;
  40 }
  41
  42 /*
  43  * This function is not intended to be valid for any amount of time,
  44  * it is just an instantaneous snapshot of the current free memory size.
  45  */
  46 __private_extern__
  47 uint64_t chudxnu_free_memory_size(void)
  48 {
  49     return (uint64_t)vm_page_free_count * (uint64_t)page_size;
  50 }
  51
  52 __private_extern__
  53 vm_offset_t chudxnu_io_map(uint64_t phys_addr, vm_size_t size)
  54 {
  55     return ml_io_map(phys_addr, size); // XXXXX limited to first 2GB XXXXX
  56 }
  57
  58 __private_extern__
  59 uint32_t chudxnu_phys_addr_wimg(uint64_t phys_addr)
  60 {
  61     return IODefaultCacheBits(phys_addr);
  62 }