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  */
  21 typedef struct CPUListState {
  22     fprintf_function cpu_fprintf;
  23     FILE *file;
  24 } CPUListState;
  25
  26 #if !defined(CONFIG_USER_ONLY)
  27
  28 enum 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)
  36 typedef uint64_t ram_addr_t;
  37 #  define RAM_ADDR_MAX UINT64_MAX
  38 #  define RAM_ADDR_FMT "%" PRIx64
  39 #else
  40 typedef uintptr_t ram_addr_t;
  41 #  define RAM_ADDR_MAX UINTPTR_MAX
  42 #  define RAM_ADDR_FMT "%" PRIxPTR
  43 #endif
  44
  45 extern ram_addr_t ram_size;
  46
  47 /* memory API */
  48
  49 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  50 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  51
  52 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  53 /* This should not be used by devices.  */
  54 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  55 RAMBlock *qemu_ram_block_by_name(const char *name);
  56 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  57                                    ram_addr_t *offset);
  58 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  59 void qemu_ram_unset_idstr(RAMBlock *block);
  60 const char *qemu_ram_get_idstr(RAMBlock *rb);
  61
  62 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  63                             int len, int is_write);
  64 static inline void cpu_physical_memory_read(hwaddr addr,
  65                                             void *buf, int len)
  66 {
  67     cpu_physical_memory_rw(addr, buf, len, 0);
  68 }
  69 static 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 }
  74 void *cpu_physical_memory_map(hwaddr addr,
  75                               hwaddr *plen,
  76                               int is_write);
  77 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  78                                int is_write, hwaddr access_len);
  79 void cpu_register_map_client(QEMUBH *bh);
  80 void cpu_unregister_map_client(QEMUBH *bh);
  81
  82 bool 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  */
  89 void qemu_flush_coalesced_mmio_buffer(void);
  90
  91 uint32_t ldub_phys(AddressSpace *as, hwaddr addr);
  92 uint32_t lduw_le_phys(AddressSpace *as, hwaddr addr);
  93 uint32_t lduw_be_phys(AddressSpace *as, hwaddr addr);
  94 uint32_t ldl_le_phys(AddressSpace *as, hwaddr addr);
  95 uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr);
  96 uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr);
  97 uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr);
  98 void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val);
  99 void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 100 void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 101 void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 102 void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 103 void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 104 void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 105
 106 void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
 107                                    const uint8_t *buf, int len);
 108 void cpu_flush_icache_range(hwaddr start, int len);
 109
 110 extern struct MemoryRegion io_mem_rom;
 111 extern struct MemoryRegion io_mem_notdirty;
 112
 113 typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
 114     ram_addr_t offset, ram_addr_t length, void *opaque);
 115
 116 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 117
 118 #endif
 119
 120 #endif /* CPU_COMMON_H */