include/exec/memory-internal.h

   1 /*
   2  * Declarations for obsolete exec.c functions
   3  *
   4  * Copyright 2011 Red Hat, Inc. and/or its affiliates
   5  *
   6  * Authors:
   7  *  Avi Kivity <avi@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or
  10  * later.  See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 /*
  15  * This header is for use by exec.c and memory.c ONLY.  Do not include it.
  16  * The functions declared here will be removed soon.
  17  */
  18
  19 #ifndef MEMORY_INTERNAL_H
  20 #define MEMORY_INTERNAL_H
  21
  22 #ifndef CONFIG_USER_ONLY
  23 #include "hw/xen/xen.h"
  24
  25
  26 typedef struct AddressSpaceDispatch AddressSpaceDispatch;
  27
  28 void address_space_init_dispatch(AddressSpace *as);
  29 void address_space_destroy_dispatch(AddressSpace *as);
  30
  31 extern const MemoryRegionOps unassigned_mem_ops;
  32
  33 bool memory_region_access_valid(MemoryRegion *mr, hwaddr addr,
  34                                 unsigned size, bool is_write);
  35
  36 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  37                                    MemoryRegion *mr);
  38 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  39 void *qemu_get_ram_ptr(ram_addr_t addr);
  40 void qemu_ram_free(ram_addr_t addr);
  41 void qemu_ram_free_from_ptr(ram_addr_t addr);
  42
  43 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  44                                                 ram_addr_t length,
  45                                                 unsigned client)
  46 {
  47     int ret = 0;
  48     ram_addr_t addr, end;
  49
  50     assert(client < DIRTY_MEMORY_NUM);
  51
  52     end = TARGET_PAGE_ALIGN(start + length);
  53     start &= TARGET_PAGE_MASK;
  54     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  55         ret |= test_bit(addr >> TARGET_PAGE_BITS,
  56                         ram_list.dirty_memory[client]);
  57     }
  58     return ret;
  59 }
  60
  61 static inline bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr,
  62                                                       unsigned client)
  63 {
  64     return cpu_physical_memory_get_dirty(addr, 1, client);
  65 }
  66
  67 /* read dirty bit (return 0 or 1) */
  68 static inline bool cpu_physical_memory_is_dirty(ram_addr_t addr)
  69 {
  70     bool vga = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_VGA);
  71     bool code = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_CODE);
  72     bool migration =
  73         cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
  74     return vga && code && migration;
  75 }
  76
  77 static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
  78                                                       unsigned client)
  79 {
  80     assert(client < DIRTY_MEMORY_NUM);
  81     set_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
  82 }
  83
  84 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
  85                                                        ram_addr_t length)
  86 {
  87     ram_addr_t addr, end;
  88
  89     end = TARGET_PAGE_ALIGN(start + length);
  90     start &= TARGET_PAGE_MASK;
  91     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  92         set_bit(addr >> TARGET_PAGE_BITS,
  93                 ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]);
  94         set_bit(addr >> TARGET_PAGE_BITS,
  95                 ram_list.dirty_memory[DIRTY_MEMORY_VGA]);
  96         set_bit(addr >> TARGET_PAGE_BITS,
  97                 ram_list.dirty_memory[DIRTY_MEMORY_CODE]);
  98     }
  99     xen_modified_memory(addr, length);
 100 }
 101
 102 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 103                                                         ram_addr_t length,
 104                                                         unsigned client)
 105 {
 106     ram_addr_t addr, end;
 107
 108     assert(client < DIRTY_MEMORY_NUM);
 109     end = TARGET_PAGE_ALIGN(start + length);
 110     start &= TARGET_PAGE_MASK;
 111     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 112         clear_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
 113     }
 114 }
 115
 116 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 117                                      unsigned client);
 118
 119 #endif
 120
 121 #endif