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 #include "exec/cpu-common.h"
  13
  14 typedef hwaddr (*phys_offset_to_gaddr_t)(hwaddr phys_offset,
  15                                          ram_addr_t size);
  16 #ifdef CONFIG_XEN
  17
  18 void xen_map_cache_init(phys_offset_to_gaddr_t f,
  19                         void *opaque);
  20 uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
  21                        uint8_t lock, bool dma);
  22 ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
  23 void xen_invalidate_map_cache_entry(uint8_t *buffer);
  24 void xen_invalidate_map_cache(void);
  25 uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  26                                  hwaddr new_phys_addr,
  27                                  hwaddr size);
  28 #else
  29
  30 static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
  31                                       void *opaque)
  32 {
  33 }
  34
  35 static inline uint8_t *xen_map_cache(hwaddr phys_addr,
  36                                      hwaddr size,
  37                                      uint8_t lock,
  38                                      bool dma)
  39 {
  40     abort();
  41 }
  42
  43 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
  44 {
  45     abort();
  46 }
  47
  48 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
  49 {
  50 }
  51
  52 static inline void xen_invalidate_map_cache(void)
  53 {
  54 }
  55
  56 static inline uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
  57                                                hwaddr new_phys_addr,
  58                                                hwaddr size)
  59 {
  60     abort();
  61 }
  62
  63 #endif
  64
  65 #endif /* XEN_MAPCACHE_H */