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Commit 83ce3e6f authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARCv2: intc: IDU: support irq affinity 



With this nsim standlone / OSCI have working irq affinity - AXS103 still
needs some work as IDU is not visible in intc hierarchy yet !

Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent bccea41e

arch/arc/kernel/mcip.c

+18 −1
Original line number Diff line number Diff line
@@ -218,11 +218,28 @@ static void idu_irq_unmask(struct irq_data *data) 
	raw_spin_unlock_irqrestore(&mcip_lock, flags);

}



#ifdef CONFIG_SMP

static int

idu_irq_set_affinity(struct irq_data *d, const struct cpumask *cpumask, bool f)

idu_irq_set_affinity(struct irq_data *data, const struct cpumask *cpumask,

		     bool force)

{

	unsigned long flags;

	cpumask_t online;



	/* errout if no online cpu per @cpumask */

	if (!cpumask_and(&online, cpumask, cpu_online_mask))

		return -EINVAL;



	raw_spin_lock_irqsave(&mcip_lock, flags);



	idu_set_dest(data->hwirq, cpumask_bits(&online)[0]);

	idu_set_mode(data->hwirq, IDU_M_TRIG_LEVEL, IDU_M_DISTRI_RR);



	raw_spin_unlock_irqrestore(&mcip_lock, flags);



	return IRQ_SET_MASK_OK;

}

#endif



static struct irq_chip idu_irq_chip = {

	.name			= "MCIP IDU Intc",