4 /* CPU interfaces that are target independent. */
6 #ifndef CONFIG_USER_ONLY
7 #include "exec/hwaddr.h"
10 #include "qemu/bswap.h"
11 #include "qemu/queue.h"
12 #include "qemu/fprintf-fn.h"
16 * @cpu_fprintf: Print function.
17 * @file: File to print to using @cpu_fprint.
19 * State commonly used for iterating over CPU models.
21 typedef struct CPUListState
{
22 fprintf_function cpu_fprintf
;
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);
31 #if !defined(CONFIG_USER_ONLY)
39 #if defined(HOST_WORDS_BIGENDIAN)
40 #define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
42 #define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
45 /* address in the RAM (different from a physical address) */
46 #if defined(CONFIG_XEN_BACKEND)
47 typedef uint64_t ram_addr_t
;
48 # define RAM_ADDR_MAX UINT64_MAX
49 # define RAM_ADDR_FMT "%" PRIx64
51 typedef uintptr_t ram_addr_t
;
52 # define RAM_ADDR_MAX UINTPTR_MAX
53 # define RAM_ADDR_FMT "%" PRIxPTR
56 extern ram_addr_t ram_size
;
60 typedef void CPUWriteMemoryFunc(void *opaque
, hwaddr addr
, uint32_t value
);
61 typedef uint32_t CPUReadMemoryFunc(void *opaque
, hwaddr addr
);
63 void qemu_ram_remap(ram_addr_t addr
, ram_addr_t length
);
64 /* This should not be used by devices. */
65 ram_addr_t
qemu_ram_addr_from_host(void *ptr
);
66 RAMBlock
*qemu_ram_block_by_name(const char *name
);
67 RAMBlock
*qemu_ram_block_from_host(void *ptr
, bool round_offset
,
69 void qemu_ram_set_idstr(RAMBlock
*block
, const char *name
, DeviceState
*dev
);
70 void qemu_ram_unset_idstr(RAMBlock
*block
);
71 const char *qemu_ram_get_idstr(RAMBlock
*rb
);
72 bool qemu_ram_is_shared(RAMBlock
*rb
);
73 size_t qemu_ram_pagesize(RAMBlock
*block
);
74 size_t qemu_ram_pagesize_largest(void);
76 void cpu_physical_memory_rw(hwaddr addr
, uint8_t *buf
,
77 int len
, int is_write
);
78 static inline void cpu_physical_memory_read(hwaddr addr
,
81 cpu_physical_memory_rw(addr
, buf
, len
, 0);
83 static inline void cpu_physical_memory_write(hwaddr addr
,
84 const void *buf
, int len
)
86 cpu_physical_memory_rw(addr
, (void *)buf
, len
, 1);
88 void *cpu_physical_memory_map(hwaddr addr
,
91 void cpu_physical_memory_unmap(void *buffer
, hwaddr len
,
92 int is_write
, hwaddr access_len
);
93 void cpu_register_map_client(QEMUBH
*bh
);
94 void cpu_unregister_map_client(QEMUBH
*bh
);
96 bool cpu_physical_memory_is_io(hwaddr phys_addr
);
98 /* Coalesced MMIO regions are areas where write operations can be reordered.
99 * This usually implies that write operations are side-effect free. This allows
100 * batching which can make a major impact on performance when using
103 void qemu_flush_coalesced_mmio_buffer(void);
105 void cpu_physical_memory_write_rom(AddressSpace
*as
, hwaddr addr
,
106 const uint8_t *buf
, int len
);
107 void cpu_flush_icache_range(hwaddr start
, int len
);
109 extern struct MemoryRegion io_mem_rom
;
110 extern struct MemoryRegion io_mem_notdirty
;
112 typedef int (RAMBlockIterFunc
)(const char *block_name
, void *host_addr
,
113 ram_addr_t offset
, ram_addr_t length
, void *opaque
);
115 int qemu_ram_foreach_block(RAMBlockIterFunc func
, void *opaque
);
116 int ram_block_discard_range(RAMBlock
*rb
, uint64_t start
, size_t length
);
120 #endif /* CPU_COMMON_H */