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, hch@infradead.org,
marc.zyngier@arm.com, mark.rutland@arm.com, peterz@infradead.org,
robh@kernel.org, tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
devicetree@vger.kernel.org, robh+dt@kernel.org,
c-sky_gcc_upstream@c-sky.com, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH V8 10/21] csky: IRQ handling
Date: Fri, 12 Oct 2018 12:42:45 +0800 [thread overview]
Message-ID: <98ea23a33a809dc640ca80ae8a7e7eab65e3785b.1539315391.git.ren_guo@c-sky.com> (raw)
In-Reply-To: <cover.1539315390.git.ren_guo@c-sky.com>
In-Reply-To: <cover.1539315390.git.ren_guo@c-sky.com>
This patch adds IRQ handling files.
Changelog:
- Use CONFIG_GENERIC_IRQ_MULTI_HANDLER
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
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:[~2018-10-12 4:47 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-12 4:42 [PATCH V8 00/21] C-SKY(csky) Linux Kernel Port Guo Ren
2018-10-12 4:42 ` [PATCH V8 01/21] csky: Build infrastructure Guo Ren
2018-10-12 4:42 ` [PATCH V8 02/21] csky: defconfig Guo Ren
2018-10-12 4:42 ` [PATCH V8 03/21] csky: Kernel booting Guo Ren
2018-10-12 4:42 ` [PATCH V8 04/21] csky: Exception handling and mm-fault Guo Ren
2018-10-12 4:42 ` [PATCH V8 05/21] csky: System Call Guo Ren
2018-10-12 4:42 ` [PATCH V8 06/21] csky: Cache and TLB routines Guo Ren
2018-10-12 4:42 ` [PATCH V8 07/21] csky: MMU and page table management Guo Ren
2018-10-12 4:42 ` [PATCH V8 08/21] csky: Process management and Signal Guo Ren
2018-10-12 4:42 ` [PATCH V8 09/21] csky: VDSO and rt_sigreturn Guo Ren
2018-10-12 4:42 ` Guo Ren [this message]
2018-10-12 4:42 ` [PATCH V8 11/21] csky: Atomic operations Guo Ren
2018-10-12 4:42 ` [PATCH V8 12/21] csky: ELF and module probe Guo Ren
2018-10-12 4:42 ` [PATCH V8 13/21] csky: Library functions Guo Ren
2018-10-12 4:42 ` [PATCH V8 14/21] csky: User access Guo Ren
2018-10-12 4:42 ` [PATCH V8 15/21] csky: Debug and Ptrace GDB Guo Ren
2018-10-12 4:42 ` [PATCH V8 16/21] csky: SMP support Guo Ren
2018-10-12 11:09 ` Marc Zyngier
2018-10-13 6:10 ` Guo Ren
2018-10-12 4:42 ` [PATCH V8 17/21] csky: Misc headers Guo Ren
2018-10-12 4:42 ` [PATCH V8 18/21] dt-bindings: csky CPU Bindings Guo Ren
2018-10-12 11:35 ` Rob Herring
2018-10-12 12:18 ` Guo Ren
2018-10-12 4:42 ` [PATCH V8 19/21] dt-bindings: Add vendor prefix for csky Guo Ren
2018-10-12 4:42 ` [PATCH V8 20/21] MAINTAINERS: Add csky Guo Ren
2018-10-12 4:42 ` [PATCH V8 21/21] csky: add support get_user_size access dword Guo Ren
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=98ea23a33a809dc640ca80ae8a7e7eab65e3785b.1539315391.git.ren_guo@c-sky.com \
--to=ren_guo@c-sky.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=c-sky_gcc_upstream@c-sky.com \
--cc=daniel.lezcano@linaro.org \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=hch@infradead.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=mark.rutland@arm.com \
--cc=peterz@infradead.org \
--cc=robh+dt@kernel.org \
--cc=robh@kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).