From nobody Sun Apr 6 05:55:26 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1737427112366648.3728104655823; Mon, 20 Jan 2025 18:38:32 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ta491-000794-88; Mon, 20 Jan 2025 21:37:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ta48y-00077l-4r for qemu-devel@nongnu.org; Mon, 20 Jan 2025 21:37:32 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ta48u-00051h-IH for qemu-devel@nongnu.org; Mon, 20 Jan 2025 21:37:31 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8CxCeFkCI9nRptmAA--.4262S3; Tue, 21 Jan 2025 10:37:24 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxXcdjCI9nwZopAA--.24032S3; Tue, 21 Jan 2025 10:37:24 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org Subject: [PATCH 1/3] hw/intc/loongarch_ipi: Add basic hotplug framework Date: Tue, 21 Jan 2025 10:37:21 +0800 Message-Id: <20250121023723.153876-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250121023723.153876-1-maobibo@loongson.cn> References: <20250121023723.153876-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMBxXcdjCI9nwZopAA--.24032S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1737427114724019000 Content-Type: text/plain; charset="utf-8" LoongArch ipi can send interrupt to multiple CPUs, interrupt routing to CPU comes from destination physical cpu id. Here hotplug interface is added for IPI object, so that parent irq line can be connected, and routing table can be added for new created cpu. Here only basic hotplug framework is added, it is stub function. Signed-off-by: Bibo Mao --- hw/intc/loongarch_ipi.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c index 5376f1e084..90bbb7ac6e 100644 --- a/hw/intc/loongarch_ipi.c +++ b/hw/intc/loongarch_ipi.c @@ -6,6 +6,7 @@ */ =20 #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "hw/boards.h" #include "qapi/error.h" #include "hw/intc/loongarch_ipi.h" @@ -76,9 +77,34 @@ static void loongarch_ipi_realize(DeviceState *dev, Erro= r **errp) } } =20 +static void loongarch_ipi_cpu_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + Object *obj =3D OBJECT(dev); + + if (!object_dynamic_cast(obj, TYPE_LOONGARCH_CPU)) { + warn_report("LoongArch extioi: Invalid %s device type", + object_get_typename(obj)); + return; + } +} + +static void loongarch_ipi_cpu_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + Object *obj =3D OBJECT(dev); + + if (!object_dynamic_cast(obj, TYPE_LOONGARCH_CPU)) { + warn_report("LoongArch extioi: Invalid %s device type", + object_get_typename(obj)); + return; + } +} + static void loongarch_ipi_class_init(ObjectClass *klass, void *data) { LoongsonIPICommonClass *licc =3D LOONGSON_IPI_COMMON_CLASS(klass); + HotplugHandlerClass *hc =3D HOTPLUG_HANDLER_CLASS(klass); LoongarchIPIClass *lic =3D LOONGARCH_IPI_CLASS(klass); DeviceClass *dc =3D DEVICE_CLASS(klass); =20 @@ -86,6 +112,8 @@ static void loongarch_ipi_class_init(ObjectClass *klass,= void *data) &lic->parent_realize); licc->get_iocsr_as =3D get_iocsr_as; licc->cpu_by_arch_id =3D loongarch_cpu_by_arch_id; + hc->plug =3D loongarch_ipi_cpu_plug; + hc->unplug =3D loongarch_ipi_cpu_unplug; } =20 static const TypeInfo loongarch_ipi_types[] =3D { @@ -95,6 +123,10 @@ static const TypeInfo loongarch_ipi_types[] =3D { .instance_size =3D sizeof(LoongarchIPIState), .class_size =3D sizeof(LoongarchIPIClass), .class_init =3D loongarch_ipi_class_init, + .interfaces =3D (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + }, } }; =20 --=20 2.39.3