| Daniel Hellstrom | c2f02da | 2008-03-28 09:47:00 +0100 | [diff] [blame] | 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 |