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 /**
  11  * vaddr:
  12  * Type wide enough to contain any #target_ulong virtual address.
  13  */
  14 typedef uint64_t vaddr;
  15 #define VADDR_PRId PRId64
  16 #define VADDR_PRIu PRIu64
  17 #define VADDR_PRIo PRIo64
  18 #define VADDR_PRIx PRIx64
  19 #define VADDR_PRIX PRIX64
  20 #define VADDR_MAX UINT64_MAX
  21
  22 void cpu_exec_init_all(void);
  23 void cpu_exec_step_atomic(CPUState *cpu);
  24
  25 /* Using intptr_t ensures that qemu_*_page_mask is sign-extended even
  26  * when intptr_t is 32-bit and we are aligning a long long.
  27  */
  28 extern uintptr_t qemu_host_page_size;
  29 extern intptr_t qemu_host_page_mask;
  30
  31 #define HOST_PAGE_ALIGN(addr) ROUND_UP((addr), qemu_host_page_size)
  32 #define REAL_HOST_PAGE_ALIGN(addr) ROUND_UP((addr), qemu_real_host_page_size())
  33
  34 /* The CPU list lock nests outside page_(un)lock or mmap_(un)lock */
  35 extern QemuMutex qemu_cpu_list_lock;
  36 void qemu_init_cpu_list(void);
  37 void cpu_list_lock(void);
  38 void cpu_list_unlock(void);
  39 unsigned int cpu_list_generation_id_get(void);
  40
  41 void tcg_flush_softmmu_tlb(CPUState *cs);
  42 void tcg_flush_jmp_cache(CPUState *cs);
  43
  44 void tcg_iommu_init_notifier_list(CPUState *cpu);
  45 void tcg_iommu_free_notifier_list(CPUState *cpu);
  46
  47 #if !defined(CONFIG_USER_ONLY)
  48
  49 enum device_endian {
  50     DEVICE_NATIVE_ENDIAN,
  51     DEVICE_BIG_ENDIAN,
  52     DEVICE_LITTLE_ENDIAN,
  53 };
  54
  55 #if HOST_BIG_ENDIAN
  56 #define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
  57 #else
  58 #define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
  59 #endif
  60
  61 /* address in the RAM (different from a physical address) */
  62 #if defined(CONFIG_XEN_BACKEND)
  63 typedef uint64_t ram_addr_t;
  64 #  define RAM_ADDR_MAX UINT64_MAX
  65 #  define RAM_ADDR_FMT "%" PRIx64
  66 #else
  67 typedef uintptr_t ram_addr_t;
  68 #  define RAM_ADDR_MAX UINTPTR_MAX
  69 #  define RAM_ADDR_FMT "%" PRIxPTR
  70 #endif
  71
  72 /* memory API */
  73
  74 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  75 /* This should not be used by devices.  */
  76 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  77 ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
  78 RAMBlock *qemu_ram_block_by_name(const char *name);
  79 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
  80                                    ram_addr_t *offset);
  81 ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host);
  82 void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
  83 void qemu_ram_unset_idstr(RAMBlock *block);
  84 const char *qemu_ram_get_idstr(RAMBlock *rb);
  85 void *qemu_ram_get_host_addr(RAMBlock *rb);
  86 ram_addr_t qemu_ram_get_offset(RAMBlock *rb);
  87 ram_addr_t qemu_ram_get_used_length(RAMBlock *rb);
  88 ram_addr_t qemu_ram_get_max_length(RAMBlock *rb);
  89 bool qemu_ram_is_shared(RAMBlock *rb);
  90 bool qemu_ram_is_noreserve(RAMBlock *rb);
  91 bool qemu_ram_is_uf_zeroable(RAMBlock *rb);
  92 void qemu_ram_set_uf_zeroable(RAMBlock *rb);
  93 bool qemu_ram_is_migratable(RAMBlock *rb);
  94 void qemu_ram_set_migratable(RAMBlock *rb);
  95 void qemu_ram_unset_migratable(RAMBlock *rb);
  96 int qemu_ram_get_fd(RAMBlock *rb);
  97
  98 size_t qemu_ram_pagesize(RAMBlock *block);
  99 size_t qemu_ram_pagesize_largest(void);
 100
 101 /**
 102  * cpu_address_space_init:
 103  * @cpu: CPU to add this address space to
 104  * @asidx: integer index of this address space
 105  * @prefix: prefix to be used as name of address space
 106  * @mr: the root memory region of address space
 107  *
 108  * Add the specified address space to the CPU's cpu_ases list.
 109  * The address space added with @asidx 0 is the one used for the
 110  * convenience pointer cpu->as.
 111  * The target-specific code which registers ASes is responsible
 112  * for defining what semantics address space 0, 1, 2, etc have.
 113  *
 114  * Before the first call to this function, the caller must set
 115  * cpu->num_ases to the total number of address spaces it needs
 116  * to support.
 117  *
 118  * Note that with KVM only one address space is supported.
 119  */
 120 void cpu_address_space_init(CPUState *cpu, int asidx,
 121                             const char *prefix, MemoryRegion *mr);
 122
 123 void cpu_physical_memory_rw(hwaddr addr, void *buf,
 124                             hwaddr len, bool is_write);
 125 static inline void cpu_physical_memory_read(hwaddr addr,
 126                                             void *buf, hwaddr len)
 127 {
 128     cpu_physical_memory_rw(addr, buf, len, false);
 129 }
 130 static inline void cpu_physical_memory_write(hwaddr addr,
 131                                              const void *buf, hwaddr len)
 132 {
 133     cpu_physical_memory_rw(addr, (void *)buf, len, true);
 134 }
 135 void cpu_reloading_memory_map(void);
 136 void *cpu_physical_memory_map(hwaddr addr,
 137                               hwaddr *plen,
 138                               bool is_write);
 139 void cpu_physical_memory_unmap(void *buffer, hwaddr len,
 140                                bool is_write, hwaddr access_len);
 141 void cpu_register_map_client(QEMUBH *bh);
 142 void cpu_unregister_map_client(QEMUBH *bh);
 143
 144 bool cpu_physical_memory_is_io(hwaddr phys_addr);
 145
 146 /* Coalesced MMIO regions are areas where write operations can be reordered.
 147  * This usually implies that write operations are side-effect free.  This allows
 148  * batching which can make a major impact on performance when using
 149  * virtualization.
 150  */
 151 void qemu_flush_coalesced_mmio_buffer(void);
 152
 153 void cpu_flush_icache_range(hwaddr start, hwaddr len);
 154
 155 typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque);
 156
 157 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
 158 int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
 159
 160 #endif
 161
 162 /* Returns: 0 on success, -1 on error */
 163 int cpu_memory_rw_debug(CPUState *cpu, vaddr addr,
 164                         void *ptr, size_t len, bool is_write);
 165
 166 /* vl.c */
 167 void list_cpus(void);
 168
 169 #endif /* CPU_COMMON_H */