Re: [RFC PATCH v7 15/29] hw/loongarch: Add LoongArch cpu interrupt support(CPUINTC)

[Richard Henderson <richard.henderson@linaro.org>]

On 3/28/22 06:57, Xiaojuan Yang wrote:
> +static void loongarch_cpu_set_irq(void *opaque, int irq, int level)
> +{
> +    LoongArchCPU *cpu = opaque;
> +    CPULoongArchState *env = &cpu->env;
> +    CPUState *cs = CPU(cpu);
> +
> +    if (irq < 0 || irq > N_IRQS) {
> +        return;
> +    }
> +
> +    if (level) {
> +        env->CSR_ESTAT |= 1 << irq;
> +    } else {
> +        env->CSR_ESTAT &= ~(1 << irq);
> +    }
> +
> +    if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) {
> +        cpu_interrupt(cs, CPU_INTERRUPT_HARD);
> +    } else {
> +        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
> +    }
> +}
> +
>   static void loongarch_cpu_reset(void *opaque)
>   {
>       LoongArchCPU *cpu = opaque;
> @@ -69,6 +92,8 @@ static void loongarch_cpu_init(LoongArchCPU *la_cpu, int cpu_num)
>       CPULoongArchState *env;
>       env = &la_cpu->env;
>   
> +    qdev_init_gpio_in(DEVICE(la_cpu), loongarch_cpu_set_irq, N_IRQS);

This all belongs over in target/loongarch/.


r~