From: Guo Ren <ren_guo@c-sky.com>
To: tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com,
robh+dt@kernel.org, mark.rutland@arm.com, arnd@arndb.de,
robh@kernel.org, sfr@canb.auug.org.au
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arch@vger.kernel.org, c-sky_gcc_upstream@c-sky.com,
gnu-csky@mentor.com, green.hu@gmail.com,
Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH V8 2/6] csky: remove irq_mapping from smp.c
Date: Thu, 20 Sep 2018 13:39:28 +0800 [thread overview]
Message-ID: <7fea6f7e58728eef8248c8c5e518f45e6043ba4b.1537417413.git.ren_guo@c-sky.com> (raw)
In-Reply-To: <cover.1537417413.git.ren_guo@c-sky.com>
In-Reply-To: <cover.1537417413.git.ren_guo@c-sky.com>
- Add irq_mapping return check
- Move IPI_IRQ into irq-driver
- remove irq_mapping from smp.c to irq-driver
- Add set_ipi_irq_mapping api to irq-driver
- update asm/smp.h
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
arch/csky/include/asm/smp.h | 4 +++-
arch/csky/kernel/smp.c | 27 +++++++++++++++++++--------
2 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/arch/csky/include/asm/smp.h b/arch/csky/include/asm/smp.h
index 9a53abf..f3e4f24 100644
--- a/arch/csky/include/asm/smp.h
+++ b/arch/csky/include/asm/smp.h
@@ -17,7 +17,9 @@ void arch_send_call_function_ipi_mask(struct cpumask *mask);
void arch_send_call_function_single_ipi(int cpu);
-void __init set_send_ipi(void (*func)(const unsigned long *, unsigned long));
+void __init set_send_ipi(void (*func)(const unsigned long *));
+
+void __init set_ipi_irq_mapping(int (*func)(void));
#define raw_smp_processor_id() (current_thread_info()->cpu)
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 522c73f..14877e2 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -20,8 +20,6 @@
#include <asm/mmu_context.h>
#include <asm/pgalloc.h>
-#define IPI_IRQ 15
-
static struct {
unsigned long bits ____cacheline_aligned;
} ipi_data[NR_CPUS] __cacheline_aligned;
@@ -56,9 +54,9 @@ static irqreturn_t handle_ipi(int irq, void *dev)
return IRQ_HANDLED;
}
-static void (*send_arch_ipi)(const unsigned long *mask, unsigned long irq) = NULL;
+static void (*send_arch_ipi)(const unsigned long *mask) = NULL;
-void __init set_send_ipi(void (*func)(const unsigned long *, unsigned long))
+void __init set_send_ipi(void (*func)(const unsigned long *))
{
if (send_arch_ipi)
return;
@@ -75,7 +73,7 @@ send_ipi_message(const struct cpumask *to_whom, enum ipi_message_type operation)
set_bit(operation, &ipi_data[i].bits);
smp_mb();
- send_arch_ipi(cpumask_bits(to_whom), IPI_IRQ);
+ send_arch_ipi(cpumask_bits(to_whom));
}
void arch_send_call_function_ipi_mask(struct cpumask *mask)
@@ -115,19 +113,32 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
}
static int ipi_dummy_dev;
+static int ipi_irq;
void __init enable_smp_ipi(void)
{
- enable_percpu_irq(IPI_IRQ, 0);
+ enable_percpu_irq(ipi_irq, 0);
+}
+
+static int (*arch_ipi_irq_mapping)(void) = NULL;
+
+void __init set_ipi_irq_mapping(int (*func)(void))
+{
+ if (arch_ipi_irq_mapping)
+ return;
+
+ arch_ipi_irq_mapping = func;
}
void __init setup_smp_ipi(void)
{
int rc;
- irq_create_mapping(NULL, IPI_IRQ);
+ ipi_irq = arch_ipi_irq_mapping();
+ if (ipi_irq == 0)
+ panic("%s IRQ mapping failed\n", __func__);
- rc = request_percpu_irq(IPI_IRQ, handle_ipi, "IPI Interrupt", &ipi_dummy_dev);
+ rc = request_percpu_irq(ipi_irq, handle_ipi, "IPI Interrupt", &ipi_dummy_dev);
if (rc)
panic("%s IRQ request failed\n", __func__);
--
2.7.4
next prev parent reply other threads:[~2018-09-20 5:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 5:39 [PATCH V8 0/6] C-SKY(csky) Linux Kernel Port Guo Ren
2018-09-20 5:39 ` [PATCH V8 1/6] csky/dma: bugfix dma_sync_for_cpu/device Guo Ren
2018-09-20 5:39 ` Guo Ren [this message]
2018-09-20 5:39 ` [PATCH V8 3/6] irqchip: add C-SKY SMP interrupt controller Guo Ren
2018-09-20 5:39 ` [PATCH V8 4/6] dt-bindings: interrupt-controller: C-SKY SMP intc Guo Ren
2018-09-20 5:39 ` [PATCH V8 5/6] clocksource: add C-SKY SMP timer Guo Ren
2018-09-20 5:54 ` Guo Ren
2018-09-20 5:39 ` [PATCH V8 6/6] dt-bindings: timer: C-SKY Multi-processor timer Guo Ren
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