arch/sparc/include/asm/irq.h

   1 /* IRQ functions
   2  *
   3  * (C) Copyright 2007
   4  * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  *
  21  */
  22
  23 #ifndef __SPARC_IRQ_H__
  24 #define __SPARC_IRQ_H__
  25
  26 #include <asm/psr.h>
  27
  28 /* Set SPARC Processor Interrupt Level */
  29 extern inline void set_pil(unsigned int level)
  30 {
  31         unsigned int psr = get_psr();
  32
  33         put_psr((psr & ~PSR_PIL) | ((level & 0xf) << PSR_PIL_OFS));
  34 }
  35
  36 /* Get SPARC Processor Interrupt Level */
  37 extern inline unsigned int get_pil(void)
  38 {
  39         unsigned int psr = get_psr();
  40         return (psr & PSR_PIL) >> PSR_PIL_OFS;
  41 }
  42
  43 /* Disables interrupts and return current PIL value */
  44 extern int intLock(void);
  45
  46 /* Sets the PIL to oldLevel */
  47 extern void intUnlock(int oldLevel);
  48
  49 #endif