From 530182169e897c0e401b245552a4c58dc6846912 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 5 Feb 2013 12:03:15 +0100 Subject: hw: move boards and other isolated files to hw/ARCH Signed-off-by: Paolo Bonzini --- hw/openrisc/pic_cpu.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 hw/openrisc/pic_cpu.c (limited to 'hw/openrisc/pic_cpu.c') diff --git a/hw/openrisc/pic_cpu.c b/hw/openrisc/pic_cpu.c new file mode 100644 index 0000000000..931511ec0f --- /dev/null +++ b/hw/openrisc/pic_cpu.c @@ -0,0 +1,60 @@ +/* + * OpenRISC Programmable Interrupt Controller support. + * + * Copyright (c) 2011-2012 Jia Liu + * Feng Gao + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#include "hw/hw.h" +#include "cpu.h" + +/* OpenRISC pic handler */ +static void openrisc_pic_cpu_handler(void *opaque, int irq, int level) +{ + OpenRISCCPU *cpu = (OpenRISCCPU *)opaque; + int i; + uint32_t irq_bit = 1 << irq; + + if (irq > 31 || irq < 0) { + return; + } + + if (level) { + cpu->env.picsr |= irq_bit; + } else { + cpu->env.picsr &= ~irq_bit; + } + + for (i = 0; i < 32; i++) { + if ((cpu->env.picsr && (1 << i)) && (cpu->env.picmr && (1 << i))) { + cpu_interrupt(&cpu->env, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(&cpu->env, CPU_INTERRUPT_HARD); + cpu->env.picsr &= ~(1 << i); + } + } +} + +void cpu_openrisc_pic_init(OpenRISCCPU *cpu) +{ + int i; + qemu_irq *qi; + qi = qemu_allocate_irqs(openrisc_pic_cpu_handler, cpu, NR_IRQS); + + for (i = 0; i < NR_IRQS; i++) { + cpu->env.irq[i] = qi[i]; + } +} -- cgit v1.2.1