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 phys_offset,
  13                                          ram_addr_t size);
  14 #ifdef CONFIG_XEN
  15
  16 void xen_map_cache_init(phys_offset_to_gaddr_t f,
  17                         void *opaque);
  18 uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
  19                        uint8_t lock, bool dma);
  20 ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
  21 void xen_invalidate_map_cache_entry(uint8_t *buffer);
  22 void xen_invalidate_map_cache(void);
  23 uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  24                                  hwaddr new_phys_addr,
  25                                  hwaddr size);
  26 #else
  27
  28 static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
  29                                       void *opaque)
  30 {
  31 }
  32
  33 static inline uint8_t *xen_map_cache(hwaddr phys_addr,
  34                                      hwaddr size,
  35                                      uint8_t lock,
  36                                      bool dma)
  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 static inline uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  55                                                hwaddr new_phys_addr,
  56                                                hwaddr size)
  57 {
  58     abort();
  59 }
  60
  61 #endif
  62
  63 #endif /* XEN_MAPCACHE_H */