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