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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: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2015-06-30 13:37:28 +05:30
parent bccea41ec0
commit 83ce3e6fcc
1 changed files with 18 additions and 1 deletions
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19
arch/arc/kernel/mcip.c
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@ -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",