src/add-ons/kernel/drivers/dvb/cx23882/util.h

   1 /*
   2  * Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without restriction,
   7  * including without limitation the rights to use, copy, modify,
   8  * merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  17  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef __UTIL_H
  26 #define __UTIL_H
  27
  28 #include <OS.h>
  29
  30 area_id map_mem(void **virt, phys_addr_t phy, size_t size, uint32 protection,
  31         const char *name);
  32 area_id alloc_mem(void **virt, phys_addr_t *phy, size_t size, uint32 protection,
  33         const char *name);
  34
  35 // generic macro for rounding, can only be used for power of 2 blocksize
  36 #define ROUNDUP(size, blocksize)        (((size) + (blocksize) - 1) & ~((blocksize) - 1))
  37
  38 #define atomic_read(a) atomic_or(a, 0)
  39
  40 #endif