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 typedef struct PhysPageEntry PhysPageEntry;
  26
  27 struct PhysPageEntry {
  28     uint16_t is_leaf : 1;
  29      /* index into phys_sections (is_leaf) or phys_map_nodes (!is_leaf) */
  30     uint16_t ptr : 15;
  31 };
  32
  33 typedef struct AddressSpaceDispatch AddressSpaceDispatch;
  34
  35 struct AddressSpaceDispatch {
  36     /* This is a multi-level map on the physical address space.
  37      * The bottom level has pointers to MemoryRegionSections.
  38      */
  39     PhysPageEntry phys_map;
  40     MemoryListener listener;
  41 };
  42
  43 void address_space_init_dispatch(AddressSpace *as);
  44 void address_space_destroy_dispatch(AddressSpace *as);
  45
  46 extern const MemoryRegionOps unassigned_mem_ops;
  47
  48 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  49                                    MemoryRegion *mr);
  50 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  51 void *qemu_get_ram_ptr(ram_addr_t addr);
  52 void qemu_ram_free(ram_addr_t addr);
  53 void qemu_ram_free_from_ptr(ram_addr_t addr);
  54
  55 #define VGA_DIRTY_FLAG       0x01
  56 #define CODE_DIRTY_FLAG      0x02
  57 #define MIGRATION_DIRTY_FLAG 0x08
  58
  59 static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
  60 {
  61     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
  62 }
  63
  64 /* read dirty bit (return 0 or 1) */
  65 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  66 {
  67     return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  68 }
  69
  70 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  71                                                 ram_addr_t length,
  72                                                 int dirty_flags)
  73 {
  74     int ret = 0;
  75     ram_addr_t addr, end;
  76
  77     end = TARGET_PAGE_ALIGN(start + length);
  78     start &= TARGET_PAGE_MASK;
  79     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  80         ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
  81     }
  82     return ret;
  83 }
  84
  85 static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
  86                                                       int dirty_flags)
  87 {
  88     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
  89 }
  90
  91 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  92 {
  93     cpu_physical_memory_set_dirty_flags(addr, 0xff);
  94 }
  95
  96 static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
  97                                                         int dirty_flags)
  98 {
  99     int mask = ~dirty_flags;
 100
 101     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
 102 }
 103
 104 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 105                                                        ram_addr_t length,
 106                                                        int dirty_flags)
 107 {
 108     ram_addr_t addr, end;
 109
 110     end = TARGET_PAGE_ALIGN(start + length);
 111     start &= TARGET_PAGE_MASK;
 112     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 113         cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
 114     }
 115     xen_modified_memory(addr, length);
 116 }
 117
 118 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 119                                                         ram_addr_t length,
 120                                                         int dirty_flags)
 121 {
 122     ram_addr_t addr, end;
 123
 124     end = TARGET_PAGE_ALIGN(start + length);
 125     start &= TARGET_PAGE_MASK;
 126     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 127         cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
 128     }
 129 }
 130
 131 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 132                                      int dirty_flags);
 133
 134 extern const IORangeOps memory_region_iorange_ops;
 135
 136 #endif
 137
 138 #endif