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
  13 /* The CPU list lock nests outside page_(un)lock or mmap_(un)lock */
  14 void qemu_init_cpu_list(void);
  15 void cpu_list_lock(void);
  16 void cpu_list_unlock(void);
  17
  18 void tcg_flush_softmmu_tlb(CPUState *cs);
  19
  20 #if !defined(CONFIG_USER_ONLY)
  21
  22 enum device_endian {
  23     DEVICE_NATIVE_ENDIAN,
  24     DEVICE_BIG_ENDIAN,
  25     DEVICE_LITTLE_ENDIAN,
  26 };
  27
  28 #if defined(HOST_WORDS_BIGENDIAN)
  29 #define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
  30 #else
  31 #define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
  32 #endif
  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 ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host);
  59 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  60 void qemu_ram_unset_idstr(RAMBlock *block);
  61 const char *qemu_ram_get_idstr(RAMBlock *rb);
  62 void *qemu_ram_get_host_addr(RAMBlock *rb);
  63 ram_addr_t qemu_ram_get_offset(RAMBlock *rb);
  64 ram_addr_t qemu_ram_get_used_length(RAMBlock *rb);
  65 bool qemu_ram_is_shared(RAMBlock *rb);
  66 bool qemu_ram_is_uf_zeroable(RAMBlock *rb);
  67 void qemu_ram_set_uf_zeroable(RAMBlock *rb);
  68 bool qemu_ram_is_migratable(RAMBlock *rb);
  69 void qemu_ram_set_migratable(RAMBlock *rb);
  70 void qemu_ram_unset_migratable(RAMBlock *rb);
  71
  72 size_t qemu_ram_pagesize(RAMBlock *block);
  73 size_t qemu_ram_pagesize_largest(void);
  74
  75 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  76                             hwaddr len, int is_write);
  77 static inline void cpu_physical_memory_read(hwaddr addr,
  78                                             void *buf, hwaddr len)
  79 {
  80     cpu_physical_memory_rw(addr, buf, len, 0);
  81 }
  82 static inline void cpu_physical_memory_write(hwaddr addr,
  83                                              const void *buf, hwaddr len)
  84 {
  85     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  86 }
  87 void *cpu_physical_memory_map(hwaddr addr,
  88                               hwaddr *plen,
  89                               int is_write);
  90 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  91                                int is_write, hwaddr access_len);
  92 void cpu_register_map_client(QEMUBH *bh);
  93 void cpu_unregister_map_client(QEMUBH *bh);
  94
  95 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  96
  97 /* Coalesced MMIO regions are areas where write operations can be reordered.
  98  * This usually implies that write operations are side-effect free.  This allows
  99  * batching which can make a major impact on performance when using
 100  * virtualization.
 101  */
 102 void qemu_flush_coalesced_mmio_buffer(void);
 103
 104 void cpu_flush_icache_range(hwaddr start, hwaddr len);
 105
 106 extern struct MemoryRegion io_mem_rom;
 107 extern struct MemoryRegion io_mem_notdirty;
 108
 109 typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque);
 110
 111 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 112 int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
 113
 114 #endif
 115
 116 #endif /* CPU_COMMON_H */