litex/software/include/base/irq.h

63 lines
1.6 KiB
C

/*
* Milkymist SoC (Software)
* Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __IRQ_H
#define __IRQ_H
static inline void irq_enable(unsigned int en)
{
__asm__ __volatile__("wcsr IE, %0" : : "r" (en));
}
static inline unsigned int irq_getmask(void)
{
unsigned int mask;
__asm__ __volatile__("rcsr %0, IM" : "=r" (mask));
return mask;
}
static inline void irq_setmask(unsigned int mask)
{
__asm__ __volatile__("wcsr IM, %0" : : "r" (mask));
}
static inline unsigned int irq_pending(void)
{
unsigned int pending;
__asm__ __volatile__("rcsr %0, IP" : "=r" (pending));
return pending;
}
static inline void irq_ack(unsigned int mask)
{
__asm__ __volatile__("wcsr IP, %0" : : "r" (mask));
}
static inline unsigned int irq_getie(void)
{
unsigned int ie;
__asm__ __volatile__("rcsr %0, IE" : "=r" (ie));
return ie;
}
static inline void irq_setie(unsigned int ie)
{
__asm__ __volatile__("wcsr IE, %0" : : "r" (ie));
}
#endif /* __IRQ_H */