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From 0f84c305351c993e4307e1e8c128d44760314e31 Mon Sep 17 00:00:00 2001
From: Andrew Bresticker <abrestic@chromium.org>
Date: Thu, 18 Sep 2014 14:47:07 -0700
Subject: [PATCH 1/3] MIPS: Always use IRQ domains for CPU IRQs
Use an IRQ domain for the 8 CPU IRQs in both the DT and non-DT cases.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Tested-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Jeffrey Deans <jeffrey.deans@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7799/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/Kconfig | 1 +
arch/mips/kernel/irq_cpu.c | 36 +++++++++++-------------------------
2 files changed, 12 insertions(+), 25 deletions(-)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1026,6 +1026,7 @@ config MIPS_HUGE_TLB_SUPPORT
config IRQ_CPU
bool
+ select IRQ_DOMAIN
config IRQ_CPU_RM7K
bool
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -98,28 +98,6 @@ static struct irq_chip mips_mt_cpu_irq_c
.irq_enable = unmask_mips_irq,
};
-void __init mips_cpu_irq_init(void)
-{
- int irq_base = MIPS_CPU_IRQ_BASE;
- int i;
-
- /* Mask interrupts. */
- clear_c0_status(ST0_IM);
- clear_c0_cause(CAUSEF_IP);
-
- /* Software interrupts are used for MT/CMT IPI */
- for (i = irq_base; i < irq_base + 2; i++)
- irq_set_chip_and_handler(i, cpu_has_mipsmt ?
- &mips_mt_cpu_irq_controller :
- &mips_cpu_irq_controller,
- handle_percpu_irq);
-
- for (i = irq_base + 2; i < irq_base + 8; i++)
- irq_set_chip_and_handler(i, &mips_cpu_irq_controller,
- handle_percpu_irq);
-}
-
-#ifdef CONFIG_IRQ_DOMAIN
static int mips_cpu_intc_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
@@ -142,8 +120,7 @@ static const struct irq_domain_ops mips_
.xlate = irq_domain_xlate_onecell,
};
-int __init mips_cpu_intc_init(struct device_node *of_node,
- struct device_node *parent)
+static void __init __mips_cpu_irq_init(struct device_node *of_node)
{
struct irq_domain *domain;
@@ -155,7 +132,16 @@ int __init mips_cpu_intc_init(struct dev
&mips_cpu_intc_irq_domain_ops, NULL);
if (!domain)
panic("Failed to add irqdomain for MIPS CPU");
+}
+void __init mips_cpu_irq_init(void)
+{
+ __mips_cpu_irq_init(NULL);
+}
+
+int __init mips_cpu_intc_init(struct device_node *of_node,
+ struct device_node *parent)
+{
+ __mips_cpu_irq_init(of_node);
return 0;
}
-#endif /* CONFIG_IRQ_DOMAIN */
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