cpu-common.h

   1 #ifndef CPU_COMMON_H
   2 #define CPU_COMMON_H 1
   3
   4 /* CPU interfaces that are target indpendent.  */
   5
   6 #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__)
   7 #define WORDS_ALIGNED
   8 #endif
   9
  10 #include "bswap.h"
  11 #include "qemu-queue.h"
  12
  13 /* address in the RAM (different from a physical address) */
  14 typedef unsigned long ram_addr_t;
  15
  16 /* memory API */
  17
  18 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
  19 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
  20
  21 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
  22                                          ram_addr_t size,
  23                                          ram_addr_t phys_offset,
  24                                          ram_addr_t region_offset);
  25 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
  26                                                 ram_addr_t size,
  27                                                 ram_addr_t phys_offset)
  28 {
  29     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
  30 }
  31
  32 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
  33 ram_addr_t qemu_ram_alloc(ram_addr_t);
  34 void qemu_ram_free(ram_addr_t addr);
  35 /* This should only be used for ram local to a device.  */
  36 void *qemu_get_ram_ptr(ram_addr_t addr);
  37 /* This should not be used by devices.  */
  38 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  39
  40 int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
  41                            CPUWriteMemoryFunc * const *mem_write,
  42                            void *opaque);
  43 void cpu_unregister_io_memory(int table_address);
  44
  45 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
  46                             int len, int is_write);
  47 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
  48                                             uint8_t *buf, int len)
  49 {
  50     cpu_physical_memory_rw(addr, buf, len, 0);
  51 }
  52 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
  53                                              const uint8_t *buf, int len)
  54 {
  55     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
  56 }
  57 void *cpu_physical_memory_map(target_phys_addr_t addr,
  58                               target_phys_addr_t *plen,
  59                               int is_write);
  60 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
  61                                int is_write, target_phys_addr_t access_len);
  62 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  63 void cpu_unregister_map_client(void *cookie);
  64
  65 struct CPUPhysMemoryClient;
  66 typedef struct CPUPhysMemoryClient CPUPhysMemoryClient;
  67 struct CPUPhysMemoryClient {
  68     void (*set_memory)(struct CPUPhysMemoryClient *client,
  69                        target_phys_addr_t start_addr,
  70                        ram_addr_t size,
  71                        ram_addr_t phys_offset);
  72     int (*sync_dirty_bitmap)(struct CPUPhysMemoryClient *client,
  73                              target_phys_addr_t start_addr,
  74                              target_phys_addr_t end_addr);
  75     int (*migration_log)(struct CPUPhysMemoryClient *client,
  76                          int enable);
  77     QLIST_ENTRY(CPUPhysMemoryClient) list;
  78 };
  79
  80 void cpu_register_phys_memory_client(CPUPhysMemoryClient *);
  81 void cpu_unregister_phys_memory_client(CPUPhysMemoryClient *);
  82
  83 uint32_t ldub_phys(target_phys_addr_t addr);
  84 uint32_t lduw_phys(target_phys_addr_t addr);
  85 uint32_t ldl_phys(target_phys_addr_t addr);
  86 uint64_t ldq_phys(target_phys_addr_t addr);
  87 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
  88 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
  89 void stb_phys(target_phys_addr_t addr, uint32_t val);
  90 void stw_phys(target_phys_addr_t addr, uint32_t val);
  91 void stl_phys(target_phys_addr_t addr, uint32_t val);
  92 void stq_phys(target_phys_addr_t addr, uint64_t val);
  93
  94 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
  95                                    const uint8_t *buf, int len);
  96
  97 #define IO_MEM_SHIFT       3
  98
  99 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
 100 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 101 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 102 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
 103
 104 /* Acts like a ROM when read and like a device when written.  */
 105 #define IO_MEM_ROMD        (1)
 106 #define IO_MEM_SUBPAGE     (2)
 107 #define IO_MEM_SUBWIDTH    (4)
 108
 109 #endif /* !CPU_COMMON_H */