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 /* The CPU list lock nests outside tb_lock/tb_unlock.  */
  27 void qemu_init_cpu_list(void);
  28 void cpu_list_lock(void);
  29 void cpu_list_unlock(void);
  30
  31 void tcg_flush_softmmu_tlb(CPUState *cs);
  32
  33 #if !defined(CONFIG_USER_ONLY)
  34
  35 enum 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)
  49 typedef uint64_t ram_addr_t;
  50 #  define RAM_ADDR_MAX UINT64_MAX
  51 #  define RAM_ADDR_FMT "%" PRIx64
  52 #else
  53 typedef uintptr_t ram_addr_t;
  54 #  define RAM_ADDR_MAX UINTPTR_MAX
  55 #  define RAM_ADDR_FMT "%" PRIxPTR
  56 #endif
  57
  58 extern ram_addr_t ram_size;
  59
  60 /* memory API */
  61
  62 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  63 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  64
  65 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  66 /* This should not be used by devices.  */
  67 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  68 RAMBlock *qemu_ram_block_by_name(const char *name);
  69 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  70                                    ram_addr_t *offset);
  71 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  72 void qemu_ram_unset_idstr(RAMBlock *block);
  73 const char *qemu_ram_get_idstr(RAMBlock *rb);
  74 bool qemu_ram_is_shared(RAMBlock *rb);
  75 size_t qemu_ram_pagesize(RAMBlock *block);
  76 size_t qemu_ram_pagesize_largest(void);
  77
  78 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  79                             int len, int is_write);
  80 static inline void cpu_physical_memory_read(hwaddr addr,
  81                                             void *buf, int len)
  82 {
  83     cpu_physical_memory_rw(addr, buf, len, 0);
  84 }
  85 static inline void cpu_physical_memory_write(hwaddr addr,
  86                                              const void *buf, int len)
  87 {
  88     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  89 }
  90 void *cpu_physical_memory_map(hwaddr addr,
  91                               hwaddr *plen,
  92                               int is_write);
  93 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  94                                int is_write, hwaddr access_len);
  95 void cpu_register_map_client(QEMUBH *bh);
  96 void cpu_unregister_map_client(QEMUBH *bh);
  97
  98 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  99
 100 /* Coalesced MMIO regions are areas where write operations can be reordered.
 101  * This usually implies that write operations are side-effect free.  This allows
 102  * batching which can make a major impact on performance when using
 103  * virtualization.
 104  */
 105 void qemu_flush_coalesced_mmio_buffer(void);
 106
 107 void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
 108                                    const uint8_t *buf, int len);
 109 void cpu_flush_icache_range(hwaddr start, int len);
 110
 111 extern struct MemoryRegion io_mem_rom;
 112 extern struct MemoryRegion io_mem_notdirty;
 113
 114 typedef int (RAMBlockIterFunc)(const char *block_name, void *host_addr,
 115     ram_addr_t offset, ram_addr_t length, void *opaque);
 116
 117 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 118 int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
 119
 120 #endif
 121
 122 #endif /* CPU_COMMON_H */