From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA07DC43334 for ; Wed, 5 Sep 2018 12:10:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8DA4E20658 for ; Wed, 5 Sep 2018 12:10:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8DA4E20658 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728021AbeIEQix (ORCPT ); Wed, 5 Sep 2018 12:38:53 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:40800 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727591AbeIEQiw (ORCPT ); Wed, 5 Sep 2018 12:38:52 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07437779|-1;CH=green;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03295;MF=ren_guo@c-sky.com;NM=1;PH=DS;RN=12;RT=12;SR=0;TI=SMTPD_---.Cmt1nof_1536149301; Received: from localhost(mailfrom:ren_guo@c-sky.com fp:SMTPD_---.Cmt1nof_1536149301) by smtp.aliyun-inc.com(10.147.41.178); Wed, 05 Sep 2018 20:08:22 +0800 From: Guo Ren To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, daniel.lezcano@linaro.org, jason@lakedaemon.net, arnd@arndb.de Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com, thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org, ren_guo@c-sky.com, green.hu@gmail.com Subject: [PATCH V3 10/26] csky: IRQ handling Date: Wed, 5 Sep 2018 20:07:49 +0800 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Guo Ren --- arch/csky/include/asm/irq.h | 10 ++++++++ arch/csky/include/asm/irqflags.h | 49 ++++++++++++++++++++++++++++++++++++++++ arch/csky/kernel/irq.c | 31 +++++++++++++++++++++++++ 3 files changed, 90 insertions(+) create mode 100644 arch/csky/include/asm/irq.h create mode 100644 arch/csky/include/asm/irqflags.h create mode 100644 arch/csky/kernel/irq.c diff --git a/arch/csky/include/asm/irq.h b/arch/csky/include/asm/irq.h new file mode 100644 index 0000000..9390cb0 --- /dev/null +++ b/arch/csky/include/asm/irq.h @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#ifndef __ASM_CSKY_IRQ_H +#define __ASM_CSKY_IRQ_H + +#include + +extern void set_handle_irq(void (*handle_irq)(struct pt_regs *)); + +#endif /* __ASM_CSKY_IRQ_H */ diff --git a/arch/csky/include/asm/irqflags.h b/arch/csky/include/asm/irqflags.h new file mode 100644 index 0000000..bd55b21 --- /dev/null +++ b/arch/csky/include/asm/irqflags.h @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#ifndef __ASM_CSKY_IRQFLAGS_H +#define __ASM_CSKY_IRQFLAGS_H +#include + +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 + +#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..ef2600d --- /dev/null +++ b/arch/csky/kernel/irq.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include +#include +#include +#include +#include +#include + +static void (*handle_arch_irq)(struct pt_regs *regs) = NULL; + +void __init set_handle_irq(void (*handle_irq)(struct pt_regs *)) +{ + if (handle_arch_irq) + return; + + handle_arch_irq = handle_irq; +} + +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