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