LXR qemu/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
  25typedef struct PhysPageEntry PhysPageEntry;
  26
  27struct 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
  33typedef struct AddressSpaceDispatch AddressSpaceDispatch;
  34
  35struct 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
  43void address_space_init_dispatch(AddressSpace *as);
  44void address_space_destroy_dispatch(AddressSpace *as);
  45
  46ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
  47                                   MemoryRegion *mr);
  48ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
  49void qemu_ram_free(ram_addr_t addr);
  50void qemu_ram_free_from_ptr(ram_addr_t addr);
  51
  52struct MemoryRegion;
  53struct MemoryRegionSection;
  54
  55void qemu_register_coalesced_mmio(hwaddr addr, ram_addr_t size);
  56void 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
  62static 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) */
  68static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
  69{
  70    return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
  71}
  72
  73static 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
  88static 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
  94static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
  95{
  96    cpu_physical_memory_set_dirty_flags(addr, 0xff);
  97}
  98
  99static 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
 107static 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
 121static 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
 134void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 135                                     int dirty_flags);
 136
 137extern const IORangeOps memory_region_iorange_ops;
 138
 139#endif
 140
 141#endif
 142