From patchwork Mon Feb 10 09:36:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: bibo mao X-Patchwork-Id: 13967553 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A5A20C02198 for ; Mon, 10 Feb 2025 09:37:21 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1thQDi-0003xL-21; Mon, 10 Feb 2025 04:36:50 -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 1thQDd-0003v8-2t for qemu-devel@nongnu.org; Mon, 10 Feb 2025 04:36:45 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1thQDa-0001x7-CO for qemu-devel@nongnu.org; Mon, 10 Feb 2025 04:36:44 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxGHGhyKlnkxtxAA--.210S3; Mon, 10 Feb 2025 17:36:33 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxn8WgyKlnqwUKAA--.39266S3; Mon, 10 Feb 2025 17:36:32 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org Subject: [PATCH v2 1/7] hw/intc/loongarch_ipi: Add basic hotplug framework Date: Mon, 10 Feb 2025 17:36:26 +0800 Message-Id: <20250210093632.3274012-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250210093632.3274012-1-maobibo@loongson.cn> References: <20250210093632.3274012-1-maobibo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: qMiowMBxn8WgyKlnqwUKAA--.39266S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== 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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 @@ */ #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, Error **errp) } } +static void loongarch_ipi_cpu_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + Object *obj = 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 = 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 = LOONGSON_IPI_COMMON_CLASS(klass); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); LoongarchIPIClass *lic = LOONGARCH_IPI_CLASS(klass); DeviceClass *dc = DEVICE_CLASS(klass); @@ -86,6 +112,8 @@ static void loongarch_ipi_class_init(ObjectClass *klass, void *data) &lic->parent_realize); licc->get_iocsr_as = get_iocsr_as; licc->cpu_by_arch_id = loongarch_cpu_by_arch_id; + hc->plug = loongarch_ipi_cpu_plug; + hc->unplug = loongarch_ipi_cpu_unplug; } static const TypeInfo loongarch_ipi_types[] = { @@ -95,6 +123,10 @@ static const TypeInfo loongarch_ipi_types[] = { .instance_size = sizeof(LoongarchIPIState), .class_size = sizeof(LoongarchIPIClass), .class_init = loongarch_ipi_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + }, } };