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__) || defined(__ia64__)
   7 #define WORDS_ALIGNED
   8 #endif
   9
  10 #ifdef TARGET_PHYS_ADDR_BITS
  11 #include "targphys.h"
  12 #endif
  13
  14 #ifndef NEED_CPU_H
  15 #include "poison.h"
  16 #endif
  17
  18 #include "bswap.h"
  19 #include "qemu-queue.h"
  20
  21 #if !defined(CONFIG_USER_ONLY)
  22
  23 enum device_endian {
  24     DEVICE_NATIVE_ENDIAN,
  25     DEVICE_BIG_ENDIAN,
  26     DEVICE_LITTLE_ENDIAN,
  27 };
  28
  29 /* address in the RAM (different from a physical address) */
  30 typedef unsigned long ram_addr_t;
  31
  32 /* memory API */
  33
  34 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
  35 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
  36
  37 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
  38                                          ram_addr_t size,
  39                                          ram_addr_t phys_offset,
  40                                          ram_addr_t region_offset);
  41 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
  42                                                 ram_addr_t size,
  43                                                 ram_addr_t phys_offset)
  44 {
  45     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
  46 }
  47
  48 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
  49 ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
  50                         ram_addr_t size, void *host);
  51 ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size);
  52 void qemu_ram_free(ram_addr_t addr);
  53 void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
  54 /* This should only be used for ram local to a device.  */
  55 void *qemu_get_ram_ptr(ram_addr_t addr);
  56 /* Same but slower, to use for migration, where the order of
  57  * RAMBlocks must not change. */
  58 void *qemu_safe_ram_ptr(ram_addr_t addr);
  59 /* This should not be used by devices.  */
  60 int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
  61 ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
  62
  63 int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
  64                            CPUWriteMemoryFunc * const *mem_write,
  65                            void *opaque, enum device_endian endian);
  66 void cpu_unregister_io_memory(int table_address);
  67
  68 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
  69                             int len, int is_write);
  70 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
  71                                             void *buf, int len)
  72 {
  73     cpu_physical_memory_rw(addr, buf, len, 0);
  74 }
  75 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
  76                                              const void *buf, int len)
  77 {
  78     cpu_physical_memory_rw(addr, (void *)buf, len, 1);
  79 }
  80 void *cpu_physical_memory_map(target_phys_addr_t addr,
  81                               target_phys_addr_t *plen,
  82                               int is_write);
  83 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
  84                                int is_write, target_phys_addr_t access_len);
  85 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
  86 void cpu_unregister_map_client(void *cookie);
  87
  88 struct CPUPhysMemoryClient;
  89 typedef struct CPUPhysMemoryClient CPUPhysMemoryClient;
  90 struct CPUPhysMemoryClient {
  91     void (*set_memory)(struct CPUPhysMemoryClient *client,
  92                        target_phys_addr_t start_addr,
  93                        ram_addr_t size,
  94                        ram_addr_t phys_offset);
  95     int (*sync_dirty_bitmap)(struct CPUPhysMemoryClient *client,
  96                              target_phys_addr_t start_addr,
  97                              target_phys_addr_t end_addr);
  98     int (*migration_log)(struct CPUPhysMemoryClient *client,
  99                          int enable);
 100     int (*log_start)(struct CPUPhysMemoryClient *client,
 101                      target_phys_addr_t phys_addr, ram_addr_t size);
 102     int (*log_stop)(struct CPUPhysMemoryClient *client,
 103                     target_phys_addr_t phys_addr, ram_addr_t size);
 104     QLIST_ENTRY(CPUPhysMemoryClient) list;
 105 };
 106
 107 void cpu_register_phys_memory_client(CPUPhysMemoryClient *);
 108 void cpu_unregister_phys_memory_client(CPUPhysMemoryClient *);
 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_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
 116
 117 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
 118
 119 void qemu_flush_coalesced_mmio_buffer(void);
 120
 121 uint32_t ldub_phys(target_phys_addr_t addr);
 122 uint32_t lduw_phys(target_phys_addr_t addr);
 123 uint32_t ldl_phys(target_phys_addr_t addr);
 124 uint64_t ldq_phys(target_phys_addr_t addr);
 125 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
 126 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
 127 void stb_phys(target_phys_addr_t addr, uint32_t val);
 128 void stw_phys(target_phys_addr_t addr, uint32_t val);
 129 void stl_phys(target_phys_addr_t addr, uint32_t val);
 130 void stq_phys(target_phys_addr_t addr, uint64_t val);
 131
 132 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
 133                                    const uint8_t *buf, int len);
 134
 135 #define IO_MEM_SHIFT       3
 136
 137 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
 138 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 139 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 140 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
 141
 142 /* Acts like a ROM when read and like a device when written.  */
 143 #define IO_MEM_ROMD        (1)
 144 #define IO_MEM_SUBPAGE     (2)
 145
 146 #endif
 147
 148 #endif /* !CPU_COMMON_H */