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
  12 /* address in the RAM (different from a physical address) */
  13 #ifdef CONFIG_KQEMU
  14 /* FIXME: This is wrong.  */
  15 typedef uint32_t ram_addr_t;
  16 #else
  17 typedef unsigned long ram_addr_t;
  18 #endif
  19
  20 /* memory API */
  21
  22 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
  23 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
  24
  25 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
  26                                          ram_addr_t size,
  27                                          ram_addr_t phys_offset,
  28                                          ram_addr_t region_offset);
  29 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
  30                                                 ram_addr_t size,
  31                                                 ram_addr_t phys_offset)
  32 {
  33     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
  34 }
  35
  36 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
  37 ram_addr_t qemu_ram_alloc(ram_addr_t);
  38 void qemu_ram_free(ram_addr_t addr);
  39 /* This should only be used for ram local to a device.  */
  40 void *qemu_get_ram_ptr(ram_addr_t addr);
  41 /* This should not be used by devices.  */
  42 ram_addr_t qemu_ram_addr_from_host(void *ptr);
  43
  44 int cpu_register_io_memory(CPUReadMemoryFunc **mem_read,
  45                            CPUWriteMemoryFunc **mem_write,
  46                            void *opaque);
  47 void cpu_unregister_io_memory(int table_address);
  48
  49 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
  50                             int len, int is_write);
  51 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
  52                                             uint8_t *buf, int len)
  53 {
  54     cpu_physical_memory_rw(addr, buf, len, 0);
  55 }
  56 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
  57                                              const uint8_t *buf, int len)
  58 {
  59     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
  60 }
  61 void *cpu_physical_memory_map(target_phys_addr_t addr,
  62                               target_phys_addr_t *plen,
  63                               int is_write);
  64 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
  65                                int is_write, target_phys_addr_t access_len);
  66 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  67 void cpu_unregister_map_client(void *cookie);
  68
  69 uint32_t ldub_phys(target_phys_addr_t addr);
  70 uint32_t lduw_phys(target_phys_addr_t addr);
  71 uint32_t ldl_phys(target_phys_addr_t addr);
  72 uint64_t ldq_phys(target_phys_addr_t addr);
  73 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
  74 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
  75 void stb_phys(target_phys_addr_t addr, uint32_t val);
  76 void stw_phys(target_phys_addr_t addr, uint32_t val);
  77 void stl_phys(target_phys_addr_t addr, uint32_t val);
  78 void stq_phys(target_phys_addr_t addr, uint64_t val);
  79
  80 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
  81                                    const uint8_t *buf, int len);
  82
  83 #define IO_MEM_SHIFT       3
  84
  85 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
  86 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
  87 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
  88 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
  89
  90 /* Acts like a ROM when read and like a device when written.  */
  91 #define IO_MEM_ROMD        (1)
  92 #define IO_MEM_SUBPAGE     (2)
  93 #define IO_MEM_SUBWIDTH    (4)
  94
  95 #endif /* !CPU_COMMON_H */