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 uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  25                                  hwaddr new_phys_addr,
  26                                  hwaddr size);
  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                                      bool dma)
  38 {
  39     abort();
  40 }
  41
  42 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
  43 {
  44     abort();
  45 }
  46
  47 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
  48 {
  49 }
  50
  51 static inline void xen_invalidate_map_cache(void)
  52 {
  53 }
  54
  55 static inline uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  56                                                hwaddr new_phys_addr,
  57                                                hwaddr size)
  58 {
  59     abort();
  60 }
  61
  62 #endif
  63
  64 #endif /* XEN_MAPCACHE_H */