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 /* The CPU list lock nests outside page_(un)lock or mmap_(un)lock */
  11 void qemu_init_cpu_list(void);
  12 void cpu_list_lock(void);
  13 void cpu_list_unlock(void);
  14
  15 void tcg_flush_softmmu_tlb(CPUState *cs);
  16
  17 #if !defined(CONFIG_USER_ONLY)
  18
  19 enum device_endian {
  20     DEVICE_NATIVE_ENDIAN,
  21     DEVICE_BIG_ENDIAN,
  22     DEVICE_LITTLE_ENDIAN,
  23 };
  24
  25 #if defined(HOST_WORDS_BIGENDIAN)
  26 #define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
  27 #else
  28 #define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
  29 #endif
  30
  31 /* address in the RAM (different from a physical address) */
  32 #if defined(CONFIG_XEN_BACKEND)
  33 typedef uint64_t ram_addr_t;
  34 #  define RAM_ADDR_MAX UINT64_MAX
  35 #  define RAM_ADDR_FMT "%" PRIx64
  36 #else
  37 typedef uintptr_t ram_addr_t;
  38 #  define RAM_ADDR_MAX UINTPTR_MAX
  39 #  define RAM_ADDR_FMT "%" PRIxPTR
  40 #endif
  41
  42 extern ram_addr_t ram_size;
  43
  44 /* memory API */
  45
  46 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  47 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  48
  49 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  50 /* This should not be used by devices.  */
  51 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  52 RAMBlock *qemu_ram_block_by_name(const char *name);
  53 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  54                                    ram_addr_t *offset);
  55 ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host);
  56 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  57 void qemu_ram_unset_idstr(RAMBlock *block);
  58 const char *qemu_ram_get_idstr(RAMBlock *rb);
  59 void *qemu_ram_get_host_addr(RAMBlock *rb);
  60 ram_addr_t qemu_ram_get_offset(RAMBlock *rb);
  61 ram_addr_t qemu_ram_get_used_length(RAMBlock *rb);
  62 bool qemu_ram_is_shared(RAMBlock *rb);
  63 bool qemu_ram_is_uf_zeroable(RAMBlock *rb);
  64 void qemu_ram_set_uf_zeroable(RAMBlock *rb);
  65 bool qemu_ram_is_migratable(RAMBlock *rb);
  66 void qemu_ram_set_migratable(RAMBlock *rb);
  67 void qemu_ram_unset_migratable(RAMBlock *rb);
  68
  69 size_t qemu_ram_pagesize(RAMBlock *block);
  70 size_t qemu_ram_pagesize_largest(void);
  71
  72 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  73                             hwaddr len, int is_write);
  74 static inline void cpu_physical_memory_read(hwaddr addr,
  75                                             void *buf, hwaddr len)
  76 {
  77     cpu_physical_memory_rw(addr, buf, len, 0);
  78 }
  79 static inline void cpu_physical_memory_write(hwaddr addr,
  80                                              const void *buf, hwaddr len)
  81 {
  82     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  83 }
  84 void *cpu_physical_memory_map(hwaddr addr,
  85                               hwaddr *plen,
  86                               int is_write);
  87 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  88                                int is_write, hwaddr access_len);
  89 void cpu_register_map_client(QEMUBH *bh);
  90 void cpu_unregister_map_client(QEMUBH *bh);
  91
  92 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  93
  94 /* Coalesced MMIO regions are areas where write operations can be reordered.
  95  * This usually implies that write operations are side-effect free.  This allows
  96  * batching which can make a major impact on performance when using
  97  * virtualization.
  98  */
  99 void qemu_flush_coalesced_mmio_buffer(void);
 100
 101 void cpu_flush_icache_range(hwaddr start, hwaddr len);
 102
 103 typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque);
 104
 105 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 106 int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
 107
 108 #endif
 109
 110 #endif /* CPU_COMMON_H */