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 /**
  16  * CPUListState:
  17  * @cpu_fprintf: Print function.
  18  * @file: File to print to using @cpu_fprint.
  19  *
  20  * State commonly used for iterating over CPU models.
  21  */
  22 typedef struct CPUListState {
  23     fprintf_function cpu_fprintf;
  24     FILE *file;
  25 } CPUListState;
  26
  27 #if !defined(CONFIG_USER_ONLY)
  28
  29 enum device_endian {
  30     DEVICE_NATIVE_ENDIAN,
  31     DEVICE_BIG_ENDIAN,
  32     DEVICE_LITTLE_ENDIAN,
  33 };
  34
  35 /* address in the RAM (different from a physical address) */
  36 #if defined(CONFIG_XEN_BACKEND)
  37 typedef uint64_t ram_addr_t;
  38 #  define RAM_ADDR_MAX UINT64_MAX
  39 #  define RAM_ADDR_FMT "%" PRIx64
  40 #else
  41 typedef uintptr_t ram_addr_t;
  42 #  define RAM_ADDR_MAX UINTPTR_MAX
  43 #  define RAM_ADDR_FMT "%" PRIxPTR
  44 #endif
  45
  46 /* memory API */
  47
  48 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
  49 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
  50
  51 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  52 /* This should only be used for ram local to a device.  */
  53 void *qemu_get_ram_ptr(ram_addr_t addr);
  54 void qemu_put_ram_ptr(void *addr);
  55 /* This should not be used by devices.  */
  56 int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
  57 ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
  58 void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev);
  59
  60 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
  61                             int len, int is_write);
  62 static inline void cpu_physical_memory_read(hwaddr addr,
  63                                             void *buf, int len)
  64 {
  65     cpu_physical_memory_rw(addr, buf, len, 0);
  66 }
  67 static inline void cpu_physical_memory_write(hwaddr addr,
  68                                              const void *buf, int len)
  69 {
  70     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  71 }
  72 void *cpu_physical_memory_map(hwaddr addr,
  73                               hwaddr *plen,
  74                               int is_write);
  75 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
  76                                int is_write, hwaddr access_len);
  77 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  78
  79 bool cpu_physical_memory_is_io(hwaddr phys_addr);
  80
  81 /* Coalesced MMIO regions are areas where write operations can be reordered.
  82  * This usually implies that write operations are side-effect free.  This allows
  83  * batching which can make a major impact on performance when using
  84  * virtualization.
  85  */
  86 void qemu_flush_coalesced_mmio_buffer(void);
  87
  88 uint32_t ldub_phys(hwaddr addr);
  89 uint32_t lduw_le_phys(hwaddr addr);
  90 uint32_t lduw_be_phys(hwaddr addr);
  91 uint32_t ldl_le_phys(hwaddr addr);
  92 uint32_t ldl_be_phys(hwaddr addr);
  93 uint64_t ldq_le_phys(hwaddr addr);
  94 uint64_t ldq_be_phys(hwaddr addr);
  95 void stb_phys(hwaddr addr, uint32_t val);
  96 void stw_le_phys(hwaddr addr, uint32_t val);
  97 void stw_be_phys(hwaddr addr, uint32_t val);
  98 void stl_le_phys(hwaddr addr, uint32_t val);
  99 void stl_be_phys(hwaddr addr, uint32_t val);
 100 void stq_le_phys(hwaddr addr, uint64_t val);
 101 void stq_be_phys(hwaddr addr, uint64_t val);
 102
 103 #ifdef NEED_CPU_H
 104 uint32_t lduw_phys(hwaddr addr);
 105 uint32_t ldl_phys(hwaddr addr);
 106 uint64_t ldq_phys(hwaddr addr);
 107 void stl_phys_notdirty(hwaddr addr, uint32_t val);
 108 void stq_phys_notdirty(hwaddr addr, uint64_t val);
 109 void stw_phys(hwaddr addr, uint32_t val);
 110 void stl_phys(hwaddr addr, uint32_t val);
 111 void stq_phys(hwaddr addr, uint64_t val);
 112 #endif
 113
 114 void cpu_physical_memory_write_rom(hwaddr addr,
 115                                    const uint8_t *buf, int len);
 116
 117 extern struct MemoryRegion io_mem_ram;
 118 extern struct MemoryRegion io_mem_rom;
 119 extern struct MemoryRegion io_mem_unassigned;
 120 extern struct MemoryRegion io_mem_notdirty;
 121
 122 #endif
 123
 124 #endif /* !CPU_COMMON_H */