2 * OpenRISC Programmable Interrupt Controller support.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
25 /* OpenRISC pic handler */
26 static void openrisc_pic_cpu_handler(void *opaque, int irq, int level)
28 OpenRISCCPU *cpu = (OpenRISCCPU *)opaque;
29 CPUState *cs = CPU(cpu);
32 if (irq > 31 || irq < 0) {
39 cpu->env.picsr |= irq_bit;
41 cpu->env.picsr &= ~irq_bit;
44 if (cpu->env.picsr & cpu->env.picmr) {
45 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
47 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
52 void cpu_openrisc_pic_init(OpenRISCCPU *cpu)
56 qi = qemu_allocate_irqs(openrisc_pic_cpu_handler, cpu, NR_IRQS);
58 for (i = 0; i < NR_IRQS; i++) {
59 cpu->env.irq[i] = qi[i];