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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 E5965C432C1 for ; Tue, 24 Sep 2019 16:14:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC2E220673 for ; Tue, 24 Sep 2019 16:14:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC2E220673 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47850 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iCnSL-0001Wj-4w for qemu-devel@archiver.kernel.org; Tue, 24 Sep 2019 12:14:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48309) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iCmfB-0001Li-4Q for qemu-devel@nongnu.org; Tue, 24 Sep 2019 11:23:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iCmf9-0006lw-DV for qemu-devel@nongnu.org; Tue, 24 Sep 2019 11:23:36 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:46632 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iCmf4-0006hL-N5; Tue, 24 Sep 2019 11:23:31 -0400 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 51FF67C2680FDC283024; Tue, 24 Sep 2019 23:23:27 +0800 (CST) Received: from linux-Bxxcye.huawei.com (10.175.104.222) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.439.0; Tue, 24 Sep 2019 23:23:18 +0800 From: Heyi Guo To: , , , Subject: [RFC PATCH 06/12] core/irq: add qemu_irq_remove_intercept interface Date: Tue, 24 Sep 2019 23:21:45 +0800 Message-ID: <1569338511-3572-7-git-send-email-guoheyi@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1569338511-3572-1-git-send-email-guoheyi@huawei.com> References: <1569338511-3572-1-git-send-email-guoheyi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.104.222] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 45.249.212.35 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Peter Maydell , Marc Zyngier , James Morse , Heyi Guo , wanghaibin.wang@huawei.com, Dave Martin Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We use qemu_irq as the bridge for other qemu modules to switch from irq injection to SDEI event trigger after VM binds the interrupt to SDEI event. We use qemu_irq_intercept_in() to override qemu_irq handler with SDEI event trigger, so we also need a corresponding interface to restore the handler to default one (i.e. ARM GIC). qemu_irq_remove_intercept() is the new interface to do the above job. Signed-off-by: Heyi Guo Cc: Peter Maydell Cc: Dave Martin Cc: Marc Zyngier Cc: Mark Rutland Cc: James Morse --- hw/core/irq.c | 11 +++++++++++ include/hw/irq.h | 8 ++++++-- 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/hw/core/irq.c b/hw/core/irq.c index 7cc0295..114bce6 100644 --- a/hw/core/irq.c +++ b/hw/core/irq.c @@ -145,6 +145,17 @@ void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n) } } +void qemu_irq_remove_intercept(qemu_irq *gpio_in, int n) +{ + int i; + qemu_irq *old_irqs = gpio_in[0]->opaque; + for (i = 0; i < n; i++) { + gpio_in[i]->handler = old_irqs[i]->handler; + gpio_in[i]->opaque = old_irqs[i]->opaque; + } + qemu_free_irqs(old_irqs, n); +} + static const TypeInfo irq_type_info = { .name = TYPE_IRQ, .parent = TYPE_OBJECT, diff --git a/include/hw/irq.h b/include/hw/irq.h index fe527f6..1af1db9 100644 --- a/include/hw/irq.h +++ b/include/hw/irq.h @@ -56,8 +56,12 @@ qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2); */ qemu_irq *qemu_irq_proxy(qemu_irq **target, int n); -/* For internal use in qtest. Similar to qemu_irq_split, but operating - on an existing vector of qemu_irq. */ +/* + * Similar to qemu_irq_split, but operating on an existing vector of qemu_irq. + */ void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n); +/* Restore the irq handler intercepted by qemu_irq_intercept_in() */ +void qemu_irq_remove_intercept(qemu_irq *gpio_in, int n); + #endif -- 1.8.3.1