include/sysemu/xen-mapcache.h

   1 /*
   2  * Copyright (C) 2011       Citrix Ltd.
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2.  See
   5  * the COPYING file in the top-level directory.
   6  *
   7  */
   8
   9 #ifndef XEN_MAPCACHE_H
  10 #define XEN_MAPCACHE_H
  11
  12 typedef hwaddr (*phys_offset_to_gaddr_t)(hwaddr start_addr,
  13                                                      ram_addr_t size,
  14                                                      void *opaque);
  15 #ifdef CONFIG_XEN
  16
  17 void xen_map_cache_init(phys_offset_to_gaddr_t f,
  18                         void *opaque);
  19 uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
  20                        uint8_t lock);
  21 ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
  22 void xen_invalidate_map_cache_entry(uint8_t *buffer);
  23 void xen_invalidate_map_cache(void);
  24
  25 #else
  26
  27 static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
  28                                       void *opaque)
  29 {
  30 }
  31
  32 static inline uint8_t *xen_map_cache(hwaddr phys_addr,
  33                                      hwaddr size,
  34                                      uint8_t lock)
  35 {
  36     abort();
  37 }
  38
  39 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
  40 {
  41     abort();
  42 }
  43
  44 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
  45 {
  46 }
  47
  48 static inline void xen_invalidate_map_cache(void)
  49 {
  50 }
  51
  52 #endif
  53
  54 #endif /* XEN_MAPCACHE_H */