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 <sys/mman.h>
  13 #include "trace.h"
  14
  15 void     qemu_map_cache_init(void);
  16 uint8_t  *qemu_map_cache(target_phys_addr_t phys_addr, target_phys_addr_t size, uint8_t lock);
  17 void     qemu_map_cache_unlock(void *phys_addr);
  18 ram_addr_t qemu_ram_addr_from_mapcache(void *ptr);
  19 void     qemu_invalidate_entry(uint8_t *buffer);
  20 void     qemu_invalidate_map_cache(void);
  21
  22 uint8_t *xen_map_block(target_phys_addr_t phys_addr, target_phys_addr_t size);
  23
  24 static inline void xen_unmap_block(void *addr, ram_addr_t size)
  25 {
  26     trace_xen_unmap_block(addr, size);
  27
  28     if (munmap(addr, size) != 0) {
  29         hw_error("xen_unmap_block: %s", strerror(errno));
  30     }
  31 }
  32
  33
  34 #define mapcache_lock()   ((void)0)
  35 #define mapcache_unlock() ((void)0)
  36
  37 #endif /* !XEN_MAPCACHE_H */