include/exec/cpu-common.h

   1 #ifndef CPU_COMMON_H
   2 #define CPU_COMMON_H 1
   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 typedef enum MMUAccessType {
  27     MMU_DATA_LOAD  = 0,
  28     MMU_DATA_STORE = 1,
  29     MMU_INST_FETCH = 2
  30 } MMUAccessType;
  31
  32 #if !defined(CONFIG_USER_ONLY)
  33
  34 enum device_endian {
  35     DEVICE_NATIVE_ENDIAN,
  36     DEVICE_BIG_ENDIAN,
  37     DEVICE_LITTLE_ENDIAN,
  38 };
  39
  40 /* address in the RAM (different from a physical address) */
  41 #if defined(CONFIG_XEN_BACKEND)
  42 typedef uint64_t ram_addr_t;
  43 #  define RAM_ADDR_MAX UINT64_MAX
  44 #  define RAM_ADDR_FMT "%" PRIx64
  45 #else
  46 typedef uintptr_t ram_addr_t;
  47 #  define RAM_ADDR_MAX UINTPTR_MAX
  48 #  define RAM_ADDR_FMT "%" PRIxPTR
  49 #endif
  50
  51 extern ram_addr_t ram_size;
  52
  53 /* memory API */
  54
  55 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  56 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  57
  58 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  59 /* This should not be used by devices.  */
  60 MemoryRegion *qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
  61 RAMBlock *qemu_ram_block_by_name(const char *name);
  62 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  63                                    ram_addr_t *ram_addr, ram_addr_t *offset);
  64 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  65 void qemu_ram_unset_idstr(RAMBlock *block);
  66 const char *qemu_ram_get_idstr(RAMBlock *rb);
  67
  68 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  69                             int len, int is_write);
  70 static inline void cpu_physical_memory_read(hwaddr addr,
  71                                             void *buf, int len)
  72 {
  73     cpu_physical_memory_rw(addr, buf, len, 0);
  74 }
  75 static inline void cpu_physical_memory_write(hwaddr addr,
  76                                              const void *buf, int len)
  77 {
  78     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  79 }
  80 void *cpu_physical_memory_map(hwaddr addr,
  81                               hwaddr *plen,
  82                               int is_write);
  83 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  84                                int is_write, hwaddr access_len);
  85 void cpu_register_map_client(QEMUBH *bh);
  86 void cpu_unregister_map_client(QEMUBH *bh);
  87
  88 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  89
  90 /* Coalesced MMIO regions are areas where write operations can be reordered.
  91  * This usually implies that write operations are side-effect free.  This allows
  92  * batching which can make a major impact on performance when using
  93  * virtualization.
  94  */
  95 void qemu_flush_coalesced_mmio_buffer(void);
  96
  97 uint32_t ldub_phys(AddressSpace *as, hwaddr addr);
  98 uint32_t lduw_le_phys(AddressSpace *as, hwaddr addr);
  99 uint32_t lduw_be_phys(AddressSpace *as, hwaddr addr);
 100 uint32_t ldl_le_phys(AddressSpace *as, hwaddr addr);
 101 uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr);
 102 uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr);
 103 uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr);
 104 void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 105 void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 106 void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 107 void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 108 void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 109 void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 110 void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 111
 112 void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
 113                                    const uint8_t *buf, int len);
 114 void cpu_flush_icache_range(hwaddr start, int len);
 115
 116 extern struct MemoryRegion io_mem_rom;
 117 extern struct MemoryRegion io_mem_notdirty;
 118
 119 typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
 120     ram_addr_t offset, ram_addr_t length, void *opaque);
 121
 122 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 123
 124 #endif
 125
 126 #endif /* !CPU_COMMON_H */