124 lines
4.1 KiB
Diff
124 lines
4.1 KiB
Diff
From 9e341df1f67c3c64dc5ac668a30bbb6b5ab5f2b4 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jogo@openwrt.org>
|
|
Date: Fri, 26 Apr 2013 12:06:03 +0200
|
|
Subject: [PATCH 14/14] MIPS: BCM63XX: allow setting affinity for IPIC
|
|
|
|
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
|
|
---
|
|
arch/mips/bcm63xx/irq.c | 49 +++++++++++++++++++++++++++++++++++++++--------
|
|
1 file changed, 41 insertions(+), 8 deletions(-)
|
|
|
|
--- a/arch/mips/bcm63xx/irq.c
|
|
+++ b/arch/mips/bcm63xx/irq.c
|
|
@@ -24,8 +24,10 @@ static void __dispatch_internal_32(int c
|
|
static void __dispatch_internal_64(int cpu) __maybe_unused;
|
|
static void __internal_irq_mask_32(struct irq_data *d) __maybe_unused;
|
|
static void __internal_irq_mask_64(struct irq_data *d) __maybe_unused;
|
|
-static void __internal_irq_unmask_32(struct irq_data *d) __maybe_unused;
|
|
-static void __internal_irq_unmask_64(struct irq_data *d) __maybe_unused;
|
|
+static void __internal_irq_unmask_32(struct irq_data *d,
|
|
+ const struct cpumask *mask) __maybe_unused;
|
|
+static void __internal_irq_unmask_64(struct irq_data *d,
|
|
+ const struct cpumask *mask) __maybe_unused;
|
|
|
|
static DEFINE_SPINLOCK(ipic_lock);
|
|
static DEFINE_SPINLOCK(epic_lock);
|
|
@@ -168,7 +170,7 @@ static unsigned int ext_irq_count;
|
|
static unsigned int ext_irq_start, ext_irq_end;
|
|
static unsigned int ext_irq_cfg_reg1, ext_irq_cfg_reg2;
|
|
static void (*internal_irq_mask)(struct irq_data *d);
|
|
-static void (*internal_irq_unmask)(struct irq_data *d);
|
|
+static void (*internal_irq_unmask)(struct irq_data *d, const struct cpumask *m);
|
|
|
|
static void bcm63xx_init_irq(void)
|
|
{
|
|
@@ -311,6 +313,20 @@ static inline void handle_internal(int i
|
|
do_IRQ(intbit + IRQ_INTERNAL_BASE);
|
|
}
|
|
|
|
+static inline int enable_irq_for_cpu(int cpu, struct irq_data *d,
|
|
+ const struct cpumask *m)
|
|
+{
|
|
+ bool enable = cpu_online(cpu);
|
|
+#ifdef CONFIG_SMP
|
|
+
|
|
+ if (m)
|
|
+ enable &= cpu_isset(cpu, *m);
|
|
+ else if (irqd_affinity_was_set(d))
|
|
+ enable &= cpu_isset(cpu, *d->affinity);
|
|
+#endif
|
|
+ return enable;
|
|
+}
|
|
+
|
|
/*
|
|
* dispatch internal devices IRQ (uart, enet, watchdog, ...). do not
|
|
* prioritize any interrupt relatively to another. the static counter
|
|
@@ -381,7 +397,8 @@ static void __internal_irq_mask_##width(
|
|
spin_unlock_irqrestore(&ipic_lock, flags); \
|
|
} \
|
|
\
|
|
-static void __internal_irq_unmask_##width(struct irq_data *d) \
|
|
+static void __internal_irq_unmask_##width(struct irq_data *d, \
|
|
+ const struct cpumask *m) \
|
|
{ \
|
|
u32 val; \
|
|
unsigned irq = d->irq - IRQ_INTERNAL_BASE; \
|
|
@@ -398,7 +415,7 @@ static void __internal_irq_unmask_##widt
|
|
break; \
|
|
\
|
|
val = bcm_readl(irq_mask_addr + reg * sizeof(u32)); \
|
|
- if (cpu_online(cpu)) \
|
|
+ if (enable_irq_for_cpu(cpu, d, m)) \
|
|
val |= (1 << bit); \
|
|
else \
|
|
val &= ~(1 << bit); \
|
|
@@ -455,7 +472,7 @@ static void bcm63xx_internal_irq_mask(st
|
|
|
|
static void bcm63xx_internal_irq_unmask(struct irq_data *d)
|
|
{
|
|
- internal_irq_unmask(d);
|
|
+ internal_irq_unmask(d, NULL);
|
|
}
|
|
|
|
/*
|
|
@@ -503,7 +520,8 @@ static void bcm63xx_external_irq_unmask(
|
|
spin_unlock_irqrestore(&epic_lock, flags);
|
|
|
|
if (is_ext_irq_cascaded)
|
|
- internal_irq_unmask(irq_get_irq_data(irq + ext_irq_start));
|
|
+ internal_irq_unmask(irq_get_irq_data(irq + ext_irq_start),
|
|
+ NULL);
|
|
}
|
|
|
|
static void bcm63xx_external_irq_clear(struct irq_data *d)
|
|
@@ -622,6 +640,18 @@ 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)
|
|
+{
|
|
+ if (!irqd_irq_disabled(data))
|
|
+ internal_irq_unmask(data, dest);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+#endif
|
|
+
|
|
static struct irq_chip bcm63xx_internal_irq_chip = {
|
|
.name = "bcm63xx_ipic",
|
|
.irq_mask = bcm63xx_internal_irq_mask,
|
|
@@ -679,7 +709,10 @@ void __init arch_init_irq(void)
|
|
|
|
setup_irq(MIPS_CPU_IRQ_BASE + 2, &cpu_ip2_cascade_action);
|
|
#ifdef CONFIG_SMP
|
|
- if (is_ext_irq_cascaded)
|
|
+ if (is_ext_irq_cascaded) {
|
|
setup_irq(MIPS_CPU_IRQ_BASE + 3, &cpu_ip3_cascade_action);
|
|
+ bcm63xx_internal_irq_chip.irq_set_affinity =
|
|
+ bcm63xx_internal_set_affinity;
|
|
+ }
|
|
#endif
|
|
}
|