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| author | Vineet Gupta <vgupta@synopsys.com> | 2015-06-30 13:37:28 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-07-06 11:09:02 +0530 |
| commit | 83ce3e6fcc16b4d36d40765618777b5a6a30d75b (patch) | |
| tree | 1ba2e1ee5d780f6505b572161a2247530aef0f39 /arch | |
| parent | bccea41ec02301a439a26e43fa49521ae8da4352 (diff) | |
| download | linux-83ce3e6fcc16b4d36d40765618777b5a6a30d75b.tar.bz2 | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/kernel/mcip.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c index 30284e8de6ff..dfeea22048af 100644 --- a/arch/arc/kernel/mcip.c +++ b/arch/arc/kernel/mcip.c @@ -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", |