LXR qemu/include/exec/cpu-common.h

   1#ifndef CPU_COMMON_H
   2#define CPU_COMMON_H
   3
   4/* CPU interfaces that are target independent.  */
   5
   6#ifndef CONFIG_USER_ONLY
   7#include "exec/hwaddr.h"
   8#endif
   9
  10#include "qemu/bswap.h"
  11#include "qemu/queue.h"
  12#include "qemu/fprintf-fn.h"
  13
  14/**
  15 * CPUListState:
  16 * @cpu_fprintf: Print function.
  17 * @file: File to print to using @cpu_fprint.
  18 *
  19 * State commonly used for iterating over CPU models.
  20 */
  21typedef struct CPUListState {
  22    fprintf_function cpu_fprintf;
  23    FILE *file;
  24} CPUListState;
  25
  26/* The CPU list lock nests outside tb_lock/tb_unlock.  */
  27void qemu_init_cpu_list(void);
  28void cpu_list_lock(void);
  29void cpu_list_unlock(void);
  30
  31void tcg_flush_softmmu_tlb(CPUState *cs);
  32
  33#if !defined(CONFIG_USER_ONLY)
  34
  35enum device_endian {
  36    DEVICE_NATIVE_ENDIAN,
  37    DEVICE_BIG_ENDIAN,
  38    DEVICE_LITTLE_ENDIAN,
  39};
  40
  41#if defined(HOST_WORDS_BIGENDIAN)
  42#define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
  43#else
  44#define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
  45#endif
  46
  47/* address in the RAM (different from a physical address) */
  48#if defined(CONFIG_XEN_BACKEND)
  49typedef uint64_t ram_addr_t;
  50#  define RAM_ADDR_MAX UINT64_MAX
  51#  define RAM_ADDR_FMT "%" PRIx64
  52#else
  53typedef uintptr_t ram_addr_t;
  54#  define RAM_ADDR_MAX UINTPTR_MAX
  55#  define RAM_ADDR_FMT "%" PRIxPTR
  56#endif
  57
  58extern ram_addr_t ram_size;
  59
  60/* memory API */
  61
  62typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  63typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  64
  65void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  66/* This should not be used by devices.  */
  67ram_addr_t qemu_ram_addr_from_host(void *ptr);
  68RAMBlock *qemu_ram_block_by_name(const char *name);
  69RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  70                                   ram_addr_t *offset);
  71ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host);
  72void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  73void qemu_ram_unset_idstr(RAMBlock *block);
  74const char *qemu_ram_get_idstr(RAMBlock *rb);
  75bool qemu_ram_is_shared(RAMBlock *rb);
  76bool qemu_ram_is_uf_zeroable(RAMBlock *rb);
  77void qemu_ram_set_uf_zeroable(RAMBlock *rb);
  78
  79size_t qemu_ram_pagesize(RAMBlock *block);
  80size_t qemu_ram_pagesize_largest(void);
  81
  82void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  83                            int len, int is_write);
  84static inline void cpu_physical_memory_read(hwaddr addr,
  85                                            void *buf, int len)
  86{
  87    cpu_physical_memory_rw(addr, buf, len, 0);
  88}
  89static inline void cpu_physical_memory_write(hwaddr addr,
  90                                             const void *buf, int len)
  91{
  92    cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  93}
  94void *cpu_physical_memory_map(hwaddr addr,
  95                              hwaddr *plen,
  96                              int is_write);
  97void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  98                               int is_write, hwaddr access_len);
  99void cpu_register_map_client(QEMUBH *bh);
 100void cpu_unregister_map_client(QEMUBH *bh);
 101
 102bool cpu_physical_memory_is_io(hwaddr phys_addr);
 103
 104/* Coalesced MMIO regions are areas where write operations can be reordered.
 105 * This usually implies that write operations are side-effect free.  This allows
 106 * batching which can make a major impact on performance when using
 107 * virtualization.
 108 */
 109void qemu_flush_coalesced_mmio_buffer(void);
 110
 111void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
 112                                   const uint8_t *buf, int len);
 113void cpu_flush_icache_range(hwaddr start, int len);
 114
 115extern struct MemoryRegion io_mem_rom;
 116extern struct MemoryRegion io_mem_notdirty;
 117
 118typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
 119    ram_addr_t offset, ram_addr_t length, void *opaque);
 120
 121int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 122int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
 123
 124#endif
 125
 126#endif /* CPU_COMMON_H */
 127