2 * QEMU MIPS interrupt support
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23 #include "qemu/osdep.h"
24 #include "qemu/main-loop.h"
26 #include "hw/mips/cpudevs.h"
28 #include "sysemu/kvm.h"
31 static void cpu_mips_irq_request(void *opaque, int irq, int level)
33 MIPSCPU *cpu = opaque;
34 CPUMIPSState *env = &cpu->env;
35 CPUState *cs = CPU(cpu);
38 if (irq < 0 || irq > 7) {
42 /* Make sure locking works even if BQL is already held by the caller */
43 if (!qemu_mutex_iothread_locked()) {
45 qemu_mutex_lock_iothread();
49 env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
51 if (kvm_enabled() && irq == 2) {
52 kvm_mips_set_interrupt(cpu, irq, level);
56 env->CP0_Cause &= ~(1 << (irq + CP0Ca_IP));
58 if (kvm_enabled() && irq == 2) {
59 kvm_mips_set_interrupt(cpu, irq, level);
63 if (env->CP0_Cause & CP0Ca_IP_mask) {
64 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
66 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
70 qemu_mutex_unlock_iothread();
74 void cpu_mips_irq_init_cpu(MIPSCPU *cpu)
76 CPUMIPSState *env = &cpu->env;
80 qi = qemu_allocate_irqs(cpu_mips_irq_request, env_archcpu(env), 8);
81 for (i = 0; i < 8; i++) {
87 void cpu_mips_soft_irq(CPUMIPSState *env, int irq, int level)
89 if (irq < 0 || irq > 2) {
93 qemu_set_irq(env->irq[irq], level);