irqchip/irq-csky-mpintc: Support auto irq deliver to all cpus (db56c512) · Commits · 戴 / test

The csky,mpintc could deliver a external irq to one cpu or all cpus, but it couldn't deliver a external irq to a group of cpus with cpu_mask. So we only use auto deliver mode when affinity mask_val is equal to cpu_present_mask. There is no limitation for only two cpus in SMP system. Signed-off-by:

Guo Ren <ren_guo@c-sky.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:

Marc Zyngier <marc.zyngier@arm.com>

drivers/irqchip/irq-csky-mpintc.c

+13 −2

Original line number	Diff line number	Diff line
		@@ -89,7 +89,18 @@ static int csky_irq_set_affinity(struct irq_data *d,
		if (cpu >= nr_cpu_ids)
		return -EINVAL;

		/* Enable interrupt destination */
		/*
		* The csky,mpintc could support auto irq deliver, but it only
		* could deliver external irq to one cpu or all cpus. So it
		* doesn't support deliver external irq to a group of cpus
		* with cpu_mask.
		* SO we only use auto deliver mode when affinity mask_val is
		* equal to cpu_present_mask.
		*
		*/
		if (cpumask_equal(mask_val, cpu_present_mask))
		cpu = 0;
		else
		cpu \|= BIT(31);

		writel_relaxed(cpu, INTCG_base + INTCG_CIDSTR + offset);

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