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, bool dma);
  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                                      bool dma)
  36 {
  37     abort();
  38 }
  39
  40 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
  41 {
  42     abort();
  43 }
  44
  45 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
  46 {
  47 }
  48
  49 static inline void xen_invalidate_map_cache(void)
  50 {
  51 }
  52
  53 #endif
  54
  55 #endif /* XEN_MAPCACHE_H */