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 #include <stdlib.h>
  13
  14 typedef hwaddr (*phys_offset_to_gaddr_t)(hwaddr start_addr,
  15                                                      ram_addr_t size,
  16                                                      void *opaque);
  17 #ifdef CONFIG_XEN
  18
  19 void xen_map_cache_init(phys_offset_to_gaddr_t f,
  20                         void *opaque);
  21 uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
  22                        uint8_t lock);
  23 ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
  24 void xen_invalidate_map_cache_entry(uint8_t *buffer);
  25 void xen_invalidate_map_cache(void);
  26
  27 #else
  28
  29 static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
  30                                       void *opaque)
  31 {
  32 }
  33
  34 static inline uint8_t *xen_map_cache(hwaddr phys_addr,
  35                                      hwaddr size,
  36                                      uint8_t lock)
  37 {
  38     abort();
  39 }
  40
  41 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
  42 {
  43     abort();
  44 }
  45
  46 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
  47 {
  48 }
  49
  50 static inline void xen_invalidate_map_cache(void)
  51 {
  52 }
  53
  54 #endif
  55
  56 #endif /* !XEN_MAPCACHE_H */