cpu-common.h

   1 #ifndef CPU_COMMON_H
   2 #define CPU_COMMON_H 1
   3
   4 /* CPU interfaces that are target independent.  */
   5
   6 #include "hwaddr.h"
   7
   8 #ifndef NEED_CPU_H
   9 #include "poison.h"
  10 #endif
  11
  12 #include "bswap.h"
  13 #include "qemu-queue.h"
  14
  15 #if !defined(CONFIG_USER_ONLY)
  16
  17 enum device_endian {
  18     DEVICE_NATIVE_ENDIAN,
  19     DEVICE_BIG_ENDIAN,
  20     DEVICE_LITTLE_ENDIAN,
  21 };
  22
  23 /* address in the RAM (different from a physical address) */
  24 #if defined(CONFIG_XEN_BACKEND)
  25 typedef uint64_t ram_addr_t;
  26 #  define RAM_ADDR_MAX UINT64_MAX
  27 #  define RAM_ADDR_FMT "%" PRIx64
  28 #else
  29 typedef uintptr_t ram_addr_t;
  30 #  define RAM_ADDR_MAX UINTPTR_MAX
  31 #  define RAM_ADDR_FMT "%" PRIxPTR
  32 #endif
  33
  34 /* memory API */
  35
  36 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  37 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  38
  39 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  40 /* This should only be used for ram local to a device.  */
  41 void *qemu_get_ram_ptr(ram_addr_t addr);
  42 void qemu_put_ram_ptr(void *addr);
  43 /* This should not be used by devices.  */
  44 int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
  45 ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
  46 void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev);
  47
  48 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  49                             int len, int is_write);
  50 static inline void cpu_physical_memory_read(hwaddr addr,
  51                                             void *buf, int len)
  52 {
  53     cpu_physical_memory_rw(addr, buf, len, 0);
  54 }
  55 static inline void cpu_physical_memory_write(hwaddr addr,
  56                                              const void *buf, int len)
  57 {
  58     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  59 }
  60 void *cpu_physical_memory_map(hwaddr addr,
  61                               hwaddr *plen,
  62                               int is_write);
  63 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  64                                int is_write, hwaddr access_len);
  65 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  66
  67 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  68
  69 /* Coalesced MMIO regions are areas where write operations can be reordered.
  70  * This usually implies that write operations are side-effect free.  This allows
  71  * batching which can make a major impact on performance when using
  72  * virtualization.
  73  */
  74 void qemu_flush_coalesced_mmio_buffer(void);
  75
  76 uint32_t ldub_phys(hwaddr addr);
  77 uint32_t lduw_le_phys(hwaddr addr);
  78 uint32_t lduw_be_phys(hwaddr addr);
  79 uint32_t ldl_le_phys(hwaddr addr);
  80 uint32_t ldl_be_phys(hwaddr addr);
  81 uint64_t ldq_le_phys(hwaddr addr);
  82 uint64_t ldq_be_phys(hwaddr addr);
  83 void stb_phys(hwaddr addr, uint32_t val);
  84 void stw_le_phys(hwaddr addr, uint32_t val);
  85 void stw_be_phys(hwaddr addr, uint32_t val);
  86 void stl_le_phys(hwaddr addr, uint32_t val);
  87 void stl_be_phys(hwaddr addr, uint32_t val);
  88 void stq_le_phys(hwaddr addr, uint64_t val);
  89 void stq_be_phys(hwaddr addr, uint64_t val);
  90
  91 #ifdef NEED_CPU_H
  92 uint32_t lduw_phys(hwaddr addr);
  93 uint32_t ldl_phys(hwaddr addr);
  94 uint64_t ldq_phys(hwaddr addr);
  95 void stl_phys_notdirty(hwaddr addr, uint32_t val);
  96 void stq_phys_notdirty(hwaddr addr, uint64_t val);
  97 void stw_phys(hwaddr addr, uint32_t val);
  98 void stl_phys(hwaddr addr, uint32_t val);
  99 void stq_phys(hwaddr addr, uint64_t val);
 100 #endif
 101
 102 void cpu_physical_memory_write_rom(hwaddr addr,
 103                                    const uint8_t *buf, int len);
 104
 105 extern struct MemoryRegion io_mem_ram;
 106 extern struct MemoryRegion io_mem_rom;
 107 extern struct MemoryRegion io_mem_unassigned;
 108 extern struct MemoryRegion io_mem_notdirty;
 109
 110 #endif
 111
 112 #endif /* !CPU_COMMON_H */