include/asm-nios2/calibration.h

   1 /*
   2  * Copyright (C) 2009 Philippe Gerum <rpm@xenomai.org>.
   3  *
   4  * Xenomai is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Xenomai is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Xenomai; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17  * 02111-1307, USA.
  18  */
  19
  20 #ifndef _XENO_ASM_NIOS2_CALIBRATION_H
  21 #define _XENO_ASM_NIOS2_CALIBRATION_H
  22
  23 #ifndef _XENO_ASM_NIOS2_BITS_INIT_H
  24 #error "please don't include asm/calibration.h directly"
  25 #endif
  26
  27 static inline unsigned long xnarch_get_sched_latency (void)
  28 {
  29 #if CONFIG_XENO_OPT_TIMING_SCHEDLAT != 0
  30 #define __sched_latency CONFIG_XENO_OPT_TIMING_SCHEDLAT
  31 #else
  32 #ifdef CONFIG_ALTERA_DE2
  33 #define __sched_latency  10000
  34 #elif CONFIG_NEEK
  35 #define __sched_latency  10000
  36 #else
  37 #error "unsupported NIOS2 platform"
  38 #endif
  39 #endif /* CONFIG_XENO_OPT_TIMING_SCHEDLAT */
  40
  41     return __sched_latency;
  42 }
  43
  44 #undef __sched_latency
  45
  46 #endif /* !_XENO_ASM_NIOS2_CALIBRATION_H */