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From a8bb19e5ba9a3a73fe6a761295b67b641a7bc9df Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Fri, 26 Apr 2013 12:06:03 +0200
Subject: [PATCH 13/13] MIPS: BCM63XX: allow setting affinity for IPIC
Add support for setting the SMP affinity for the IPIC IRQs.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/irq.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -418,9 +418,14 @@ static void bcm63xx_internal_irq_mask(st
static void bcm63xx_internal_irq_unmask(struct irq_data *d)
{
unsigned long flags;
+ const struct cpumask *dest = cpu_online_mask;
spin_lock_irqsave(&ipic_lock, flags);
- internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, cpu_online_mask);
+#ifdef CONFIG_SMP
+ if (irqd_affinity_was_set(d))
+ dest = d->affinity;
+#endif
+ internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, dest);
spin_unlock_irqrestore(&ipic_lock, flags);
}
@@ -596,10 +601,30 @@ static int bcm63xx_external_irq_set_type
return IRQ_SET_MASK_OK_NOCOPY;
}
+#ifdef CONFIG_SMP
+static int bcm63xx_internal_set_affinity(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force)
+{
+ unsigned int irq = data->irq - IRQ_INTERNAL_BASE;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ipic_lock, flags);
+ if (!irqd_irq_disabled(data))
+ internal_irq_unmask(irq, dest);
+ spin_unlock_irqrestore(&ipic_lock, flags);
+
+ return 0;
+}
+#endif
+
static struct irq_chip bcm63xx_internal_irq_chip = {
.name = "bcm63xx_ipic",
.irq_mask = bcm63xx_internal_irq_mask,
.irq_unmask = bcm63xx_internal_irq_unmask,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = bcm63xx_internal_set_affinity,
+#endif
};
static struct irq_chip bcm63xx_external_irq_chip = {
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