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 bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr,
  44                                                       unsigned client)
  45 {
  46     assert(client < DIRTY_MEMORY_NUM);
  47     return test_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
  48 }
  49
  50 /* read dirty bit (return 0 or 1) */
  51 static inline bool cpu_physical_memory_is_dirty(ram_addr_t addr)
  52 {
  53     bool vga = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_VGA);
  54     bool code = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_CODE);
  55     bool migration =
  56         cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
  57     return vga && code && migration;
  58 }
  59
  60 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  61                                                 ram_addr_t length,
  62                                                 unsigned client)
  63 {
  64     int ret = 0;
  65     ram_addr_t addr, end;
  66
  67     end = TARGET_PAGE_ALIGN(start + length);
  68     start &= TARGET_PAGE_MASK;
  69     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  70         ret |= cpu_physical_memory_get_dirty_flag(addr, client);
  71     }
  72     return ret;
  73 }
  74
  75 static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
  76                                                       unsigned client)
  77 {
  78     assert(client < DIRTY_MEMORY_NUM);
  79     set_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
  80 }
  81
  82 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  83 {
  84     cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
  85     cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_VGA);
  86     cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_CODE);
  87 }
  88
  89 static inline void cpu_physical_memory_clear_dirty_flag(ram_addr_t addr,
  90                                                        unsigned client)
  91 {
  92     assert(client < DIRTY_MEMORY_NUM);
  93     clear_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
  94 }
  95
  96 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
  97                                                        ram_addr_t length)
  98 {
  99     ram_addr_t addr, end;
 100
 101     end = TARGET_PAGE_ALIGN(start + length);
 102     start &= TARGET_PAGE_MASK;
 103     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 104         cpu_physical_memory_set_dirty(addr);
 105     }
 106     xen_modified_memory(addr, length);
 107 }
 108
 109 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 110                                                         ram_addr_t length,
 111                                                         unsigned client)
 112 {
 113     ram_addr_t addr, end;
 114
 115     end = TARGET_PAGE_ALIGN(start + length);
 116     start &= TARGET_PAGE_MASK;
 117     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 118         cpu_physical_memory_clear_dirty_flag(addr, client);
 119     }
 120 }
 121
 122 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 123                                      unsigned client);
 124
 125 #endif
 126
 127 #endif