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.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 ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  47                                    MemoryRegion *mr);
  48 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  49 void qemu_ram_free(ram_addr_t addr);
  50 void qemu_ram_free_from_ptr(ram_addr_t addr);
  51
  52 struct MemoryRegion;
  53 struct MemoryRegionSection;
  54
  55 void qemu_register_coalesced_mmio(hwaddr addr, ram_addr_t size);
  56 void qemu_unregister_coalesced_mmio(hwaddr addr, ram_addr_t size);
  57
  58 #define VGA_DIRTY_FLAG       0x01
  59 #define CODE_DIRTY_FLAG      0x02
  60 #define MIGRATION_DIRTY_FLAG 0x08
  61
  62 static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
  63 {
  64     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
  65 }
  66
  67 /* read dirty bit (return 0 or 1) */
  68 static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  69 {
  70     return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  71 }
  72
  73 static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
  74                                                 ram_addr_t length,
  75                                                 int dirty_flags)
  76 {
  77     int ret = 0;
  78     ram_addr_t addr, end;
  79
  80     end = TARGET_PAGE_ALIGN(start + length);
  81     start &= TARGET_PAGE_MASK;
  82     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
  83         ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
  84     }
  85     return ret;
  86 }
  87
  88 static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
  89                                                       int dirty_flags)
  90 {
  91     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
  92 }
  93
  94 static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  95 {
  96     cpu_physical_memory_set_dirty_flags(addr, 0xff);
  97 }
  98
  99 static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
 100                                                         int dirty_flags)
 101 {
 102     int mask = ~dirty_flags;
 103
 104     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
 105 }
 106
 107 static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 108                                                        ram_addr_t length,
 109                                                        int dirty_flags)
 110 {
 111     ram_addr_t addr, end;
 112
 113     end = TARGET_PAGE_ALIGN(start + length);
 114     start &= TARGET_PAGE_MASK;
 115     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 116         cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
 117     }
 118     xen_modified_memory(addr, length);
 119 }
 120
 121 static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
 122                                                         ram_addr_t length,
 123                                                         int dirty_flags)
 124 {
 125     ram_addr_t addr, end;
 126
 127     end = TARGET_PAGE_ALIGN(start + length);
 128     start &= TARGET_PAGE_MASK;
 129     for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
 130         cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
 131     }
 132 }
 133
 134 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 135                                      int dirty_flags);
 136
 137 extern const IORangeOps memory_region_iorange_ops;
 138
 139 #endif
 140
 141 #endif