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 #include "qemu/fprintf-fn.h" 13 14 /** 15 * CPUListState: 16 * @cpu_fprintf: Print function. 17 * @file: File to print to using @cpu_fprint. 18 * 19 * State commonly used for iterating over CPU models. 20 */ 21 typedef struct CPUListState { 22 fprintf_function cpu_fprintf; 23 FILE *file; 24 } CPUListState; 25 26 /* The CPU list lock nests outside page_(un)lock or mmap_(un)lock */ 27 void qemu_init_cpu_list(void); 28 void cpu_list_lock(void); 29 void cpu_list_unlock(void); 30 31 void tcg_flush_softmmu_tlb(CPUState *cs); 32 33 #if !defined(CONFIG_USER_ONLY) 34 35 enum device_endian { 36 DEVICE_NATIVE_ENDIAN, 37 DEVICE_BIG_ENDIAN, 38 DEVICE_LITTLE_ENDIAN, 39 }; 40 41 #if defined(HOST_WORDS_BIGENDIAN) 42 #define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN 43 #else 44 #define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN 45 #endif 46 47 /* address in the RAM (different from a physical address) */ 48 #if defined(CONFIG_XEN_BACKEND) 49 typedef uint64_t ram_addr_t; 50 # define RAM_ADDR_MAX UINT64_MAX 51 # define RAM_ADDR_FMT "%" PRIx64 52 #else 53 typedef uintptr_t ram_addr_t; 54 # define RAM_ADDR_MAX UINTPTR_MAX 55 # define RAM_ADDR_FMT "%" PRIxPTR 56 #endif 57 58 extern ram_addr_t ram_size; 59 60 /* memory API */ 61 62 typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value); 63 typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr); 64 65 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length); 66 /* This should not be used by devices. */ 67 ram_addr_t qemu_ram_addr_from_host(void *ptr); 68 RAMBlock *qemu_ram_block_by_name(const char *name); 69 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset, 70 ram_addr_t *offset); 71 ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host); 72 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev); 73 void qemu_ram_unset_idstr(RAMBlock *block); 74 const char *qemu_ram_get_idstr(RAMBlock *rb); 75 void *qemu_ram_get_host_addr(RAMBlock *rb); 76 ram_addr_t qemu_ram_get_offset(RAMBlock *rb); 77 ram_addr_t qemu_ram_get_used_length(RAMBlock *rb); 78 bool qemu_ram_is_shared(RAMBlock *rb); 79 bool qemu_ram_is_uf_zeroable(RAMBlock *rb); 80 void qemu_ram_set_uf_zeroable(RAMBlock *rb); 81 bool qemu_ram_is_migratable(RAMBlock *rb); 82 void qemu_ram_set_migratable(RAMBlock *rb); 83 void qemu_ram_unset_migratable(RAMBlock *rb); 84 85 size_t qemu_ram_pagesize(RAMBlock *block); 86 size_t qemu_ram_pagesize_largest(void); 87 88 void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, 89 hwaddr len, int is_write); 90 static inline void cpu_physical_memory_read(hwaddr addr, 91 void *buf, hwaddr len) 92 { 93 cpu_physical_memory_rw(addr, buf, len, 0); 94 } 95 static inline void cpu_physical_memory_write(hwaddr addr, 96 const void *buf, hwaddr len) 97 { 98 cpu_physical_memory_rw(addr, (void *)buf, len, 1); 99 } 100 void *cpu_physical_memory_map(hwaddr addr, 101 hwaddr *plen, 102 int is_write); 103 void cpu_physical_memory_unmap(void *buffer, hwaddr len, 104 int is_write, hwaddr access_len); 105 void cpu_register_map_client(QEMUBH *bh); 106 void cpu_unregister_map_client(QEMUBH *bh); 107 108 bool cpu_physical_memory_is_io(hwaddr phys_addr); 109 110 /* Coalesced MMIO regions are areas where write operations can be reordered. 111 * This usually implies that write operations are side-effect free. This allows 112 * batching which can make a major impact on performance when using 113 * virtualization. 114 */ 115 void qemu_flush_coalesced_mmio_buffer(void); 116 117 void cpu_flush_icache_range(hwaddr start, hwaddr len); 118 119 extern struct MemoryRegion io_mem_rom; 120 extern struct MemoryRegion io_mem_notdirty; 121 122 typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque); 123 124 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque); 125 int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length); 126 127 #endif 128 129 #endif /* CPU_COMMON_H */ 130