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#if !defined(CONFIG_USER_ONLY)
  27
  28enum device_endian {
  29    DEVICE_NATIVE_ENDIAN,
  30    DEVICE_BIG_ENDIAN,
  31    DEVICE_LITTLE_ENDIAN,
  32};
  33
  34/* address in the RAM (different from a physical address) */
  35#if defined(CONFIG_XEN_BACKEND)
  36typedef uint64_t ram_addr_t;
  37#  define RAM_ADDR_MAX UINT64_MAX
  38#  define RAM_ADDR_FMT "%" PRIx64
  39#else
  40typedef uintptr_t ram_addr_t;
  41#  define RAM_ADDR_MAX UINTPTR_MAX
  42#  define RAM_ADDR_FMT "%" PRIxPTR
  43#endif
  44
  45extern ram_addr_t ram_size;
  46
  47/* memory API */
  48
  49typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  50typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  51
  52void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  53/* This should not be used by devices.  */
  54ram_addr_t qemu_ram_addr_from_host(void *ptr);
  55RAMBlock *qemu_ram_block_by_name(const char *name);
  56RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  57                                   ram_addr_t *offset);
  58void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  59void qemu_ram_unset_idstr(RAMBlock *block);
  60const char *qemu_ram_get_idstr(RAMBlock *rb);
  61
  62void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  63                            int len, int is_write);
  64static inline void cpu_physical_memory_read(hwaddr addr,
  65                                            void *buf, int len)
  66{
  67    cpu_physical_memory_rw(addr, buf, len, 0);
  68}
  69static inline void cpu_physical_memory_write(hwaddr addr,
  70                                             const void *buf, int len)
  71{
  72    cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  73}
  74void *cpu_physical_memory_map(hwaddr addr,
  75                              hwaddr *plen,
  76                              int is_write);
  77void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  78                               int is_write, hwaddr access_len);
  79void cpu_register_map_client(QEMUBH *bh);
  80void cpu_unregister_map_client(QEMUBH *bh);
  81
  82bool cpu_physical_memory_is_io(hwaddr phys_addr);
  83
  84/* Coalesced MMIO regions are areas where write operations can be reordered.
  85 * This usually implies that write operations are side-effect free.  This allows
  86 * batching which can make a major impact on performance when using
  87 * virtualization.
  88 */
  89void qemu_flush_coalesced_mmio_buffer(void);
  90
  91uint32_t ldub_phys(AddressSpace *as, hwaddr addr);
  92uint32_t lduw_le_phys(AddressSpace *as, hwaddr addr);
  93uint32_t lduw_be_phys(AddressSpace *as, hwaddr addr);
  94uint32_t ldl_le_phys(AddressSpace *as, hwaddr addr);
  95uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr);
  96uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr);
  97uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr);
  98void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val);
  99void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 100void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 101void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 102void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 103void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 104void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 105
 106void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
 107                                   const uint8_t *buf, int len);
 108void cpu_flush_icache_range(hwaddr start, int len);
 109
 110extern struct MemoryRegion io_mem_rom;
 111extern struct MemoryRegion io_mem_notdirty;
 112
 113typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
 114    ram_addr_t offset, ram_addr_t length, void *opaque);
 115
 116int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 117
 118#endif
 119
 120#endif /* CPU_COMMON_H */
 121