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-rw-r--r--target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch61
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch b/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch
new file mode 100644
index 0000000000..d976903d2f
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch
@@ -0,0 +1,61 @@
+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 = {