From: Guo Ren <ren_guo@c-sky.com>
To: akpm@linux-foundation.org, arnd@arndb.de,
daniel.lezcano@linaro.org, davem@davemloft.net,
gregkh@linuxfoundation.org, jason@lakedaemon.net,
marc.zyngier@arm.com, mark.rutland@arm.com,
mchehab+samsung@kernel.org, peterz@infradead.org,
robh@kernel.org, robh+dt@kernel.org, tglx@linutronix.de
Cc: green.hu@gmail.com, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, devicetree@vger.kernel.org,
c-sky_gcc_upstream@c-sky.com, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH V7 10/20] csky: IRQ handling
Date: Fri, 5 Oct 2018 13:41:52 +0800 [thread overview]
Message-ID: <b092fb59fe7e767fcff00d04ef9ef025139de782.1538715563.git.ren_guo@c-sky.com> (raw)
Message-ID: <20181005054152.YauUV2QpakkxKegWhsH4Oo-EI0VNCu340m9tjdDcjGk@z> (raw)
In-Reply-To: <cover.1538715563.git.ren_guo@c-sky.com>
In-Reply-To: <cover.1538715563.git.ren_guo@c-sky.com>
This patch adds IRQ handling files.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
arch/csky/include/asm/irqflags.h | 49 ++++++++++++++++++++++++++++++++++++++++
arch/csky/kernel/irq.c | 22 ++++++++++++++++++
2 files changed, 71 insertions(+)
create mode 100644 arch/csky/include/asm/irqflags.h
create mode 100644 arch/csky/kernel/irq.c
diff --git a/arch/csky/include/asm/irqflags.h b/arch/csky/include/asm/irqflags.h
new file mode 100644
index 0000000..9e3a569
--- /dev/null
+++ b/arch/csky/include/asm/irqflags.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_CSKY_IRQFLAGS_H
+#define __ASM_CSKY_IRQFLAGS_H
+#include <abi/reg_ops.h>
+
+static inline unsigned long arch_local_irq_save(void)
+{
+ unsigned long flags;
+
+ flags = mfcr("psr");
+ asm volatile("psrclr ie\n":::"memory");
+ return flags;
+}
+#define arch_local_irq_save arch_local_irq_save
+
+static inline void arch_local_irq_enable(void)
+{
+ asm volatile("psrset ee, ie\n":::"memory");
+}
+#define arch_local_irq_enable arch_local_irq_enable
+
+static inline void arch_local_irq_disable(void)
+{
+ asm volatile("psrclr ie\n":::"memory");
+}
+#define arch_local_irq_disable arch_local_irq_disable
+
+static inline unsigned long arch_local_save_flags(void)
+{
+ return mfcr("psr");
+}
+#define arch_local_save_flags arch_local_save_flags
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+ mtcr("psr", flags);
+}
+#define arch_local_irq_restore arch_local_irq_restore
+
+static inline int arch_irqs_disabled_flags(unsigned long flags)
+{
+ return !(flags & (1<<6));
+}
+#define arch_irqs_disabled_flags arch_irqs_disabled_flags
+
+#include <asm-generic/irqflags.h>
+
+#endif /* __ASM_CSKY_IRQFLAGS_H */
diff --git a/arch/csky/kernel/irq.c b/arch/csky/kernel/irq.c
new file mode 100644
index 0000000..03a1930
--- /dev/null
+++ b/arch/csky/kernel/irq.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <asm/traps.h>
+#include <asm/smp.h>
+
+void __init init_IRQ(void)
+{
+ irqchip_init();
+#ifdef CONFIG_SMP
+ setup_smp_ipi();
+#endif
+}
+
+asmlinkage void __irq_entry csky_do_IRQ(struct pt_regs *regs)
+{
+ handle_arch_irq(regs);
+}
--
2.7.4
next prev parent reply other threads:[~2018-10-05 12:42 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 5:41 [PATCH V7 00/20] C-SKY(csky) Linux Kernel Port Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 01/20] csky: Build infrastructure Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 02/20] csky: defconfig Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 03/20] csky: Kernel booting Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 04/20] csky: Exception handling and mm-fault Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 05/20] csky: System Call Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 06/20] csky: Cache and TLB routines Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 07/20] csky: MMU and page table management Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 08/20] csky: Process management and Signal Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 09/20] csky: VDSO and rt_sigreturn Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` Guo Ren [this message]
2018-10-05 5:41 ` [PATCH V7 10/20] csky: IRQ handling Guo Ren
2018-10-05 5:41 ` [PATCH V7 11/20] csky: Atomic operations Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 12/20] csky: ELF and module probe Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 13/20] csky: Library functions Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 14/20] csky: User access Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 15/20] csky: Debug and Ptrace GDB Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 16/20] csky: SMP support Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 5:41 ` [PATCH V7 17/20] csky: Misc headers Guo Ren
2018-10-05 5:41 ` Guo Ren
2018-10-05 8:33 ` [PATCH V7 18/20] dt-bindings: csky CPU Bindings Guo Ren
2018-10-05 8:33 ` Guo Ren
2018-10-05 8:33 ` [PATCH V7 19/20] dt-bindings: Add vendor prefix for csky Guo Ren
2018-10-05 8:33 ` Guo Ren
2018-10-05 8:33 ` [PATCH V7 20/20] MAINTAINERS: Add csky Guo Ren
2018-10-05 8:33 ` Guo Ren
2018-10-06 20:06 ` [PATCH V7 00/20] C-SKY(csky) Linux Kernel Port Eugene Syromiatnikov
2018-10-06 20:06 ` Eugene Syromiatnikov
2018-10-07 4:48 ` Guo Ren
2018-10-07 4:48 ` Guo Ren
2018-10-07 5:44 ` Eugene Syromiatnikov
2018-10-07 5:44 ` Eugene Syromiatnikov
2018-10-07 10:41 ` Guo Ren
2018-10-07 10:41 ` Guo Ren
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