From patchwork Thu Jan 21 22:09:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Minwoo Im X-Patchwork-Id: 12037871 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=-13.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 9E98AC433DB for ; Thu, 21 Jan 2021 22:12:53 +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 4E65A221E5 for ; Thu, 21 Jan 2021 22:12:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4E65A221E5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:33090 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l2iCC-00028U-G5 for qemu-devel@archiver.kernel.org; Thu, 21 Jan 2021 17:12:52 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41572) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l2i8p-0006LC-9n; Thu, 21 Jan 2021 17:09:23 -0500 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]:44640) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l2i8n-0000Jp-2j; Thu, 21 Jan 2021 17:09:22 -0500 Received: by mail-pl1-x631.google.com with SMTP id r4so2068030pls.11; Thu, 21 Jan 2021 14:09:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=HaQZFZep6oCcGyOskVgZxy+gJ6D8yIOkK31HGVOPtvw=; b=MgDV1nLiX6tefgc2ql09whLtV/vZkT+yGylfItnJp6Hm5ThFROqYKGAF/Qv8/R/ihv idhozmcxGZVZEhdaCA/KtQXHk0NXbH+5GRYoa/38243/3ftpcOOK0cFk4IX1+HVojk28 oDP9jbZw/M4Lh+dTmS6MkQ+OpnzBHGbdrU5LySB/LkAXt3ixgngL2CUkgS/3mYFRbCSm hsIEsRsyn5ZowBPMeLyYVDX30Zc5SWYHE5fIBRLRFtkYUHBX1JlHtHwcZhTNc547yAYz HangvsY4iu6pmf/BWN0bRAAvrzR2po8uQuZXxqYvKWFppZDfhVWS6kt98KkJ1Cb0rgGI UjWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=HaQZFZep6oCcGyOskVgZxy+gJ6D8yIOkK31HGVOPtvw=; b=GAgvAnM+lyg+dkMSSXpTvmZTMH3dIjgffWq3gaUiMP2at9sZHHa9RcYkRuR5ZXee2/ LCyVT81xKCSXDvvpLdZ17MoAK4+vPl/kd6Kmkesuiwk9yg9hlF78FgvItV4U6YNxNbd2 4kVogR8hJ2dpJHMLnONYODkfZQRGyz7bmaT/h+HZMnIlfMGI4RNnG4N5JF4EsmS4j8rK YQKHOMA3CuWiLsMY3HfgN4BgNnIXdLNoWrgmWGcxr3TRFZMORna3DEWFKSpLfwObLw+R GrFvZBmSQ1AgzPn0RNBufgNxGHpaJul4ot/iPPd39TT+gY5LTwsGpyxHsmBHmBEuxmbs sdfg== X-Gm-Message-State: AOAM533iLg8nVTSDIQdQM4uHvSJBrICK3aahi8Bk9SwnBoxkF/nKECsZ q9Gad849dxd1fKQpKehPKfTqE/qeOQtaxQ== X-Google-Smtp-Source: ABdhPJwEKHeo3/OUC38naKbYued3dPkme99uNvd03UPWKE5skvHOXoYAVfv85vzfsFo0arBL5EEDfw== X-Received: by 2002:a17:90a:2ec1:: with SMTP id h1mr1741574pjs.18.1611266959109; Thu, 21 Jan 2021 14:09:19 -0800 (PST) Received: from localhost.localdomain ([211.108.35.36]) by smtp.gmail.com with ESMTPSA id c8sm5584308pfo.148.2021.01.21.14.09.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Jan 2021 14:09:18 -0800 (PST) From: Minwoo Im To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH V4 1/6] hw/block/nvme: introduce nvme-subsys device Date: Fri, 22 Jan 2021 07:09:03 +0900 Message-Id: <20210121220908.14247-2-minwoo.im.dev@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210121220908.14247-1-minwoo.im.dev@gmail.com> References: <20210121220908.14247-1-minwoo.im.dev@gmail.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=minwoo.im.dev@gmail.com; helo=mail-pl1-x631.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keith Busch , Klaus Jensen , Minwoo Im , Kevin Wolf , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" To support multi-path in QEMU NVMe device model, We need to have NVMe subsystem hierarchy to map controllers and namespaces to a NVMe subsystem. This patch introduced a simple nvme-subsys device model. The subsystem will be prepared with subsystem NQN with provided in nvme-subsys device: ex) -device nvme-subsys,id=subsys0: nqn.2019-08.org.qemu:subsys0 Signed-off-by: Minwoo Im --- hw/block/meson.build | 2 +- hw/block/nvme-subsys.c | 63 ++++++++++++++++++++++++++++++++++++++++++ hw/block/nvme-subsys.h | 25 +++++++++++++++++ hw/block/nvme.c | 3 ++ 4 files changed, 92 insertions(+), 1 deletion(-) create mode 100644 hw/block/nvme-subsys.c create mode 100644 hw/block/nvme-subsys.h diff --git a/hw/block/meson.build b/hw/block/meson.build index 602ca6c8541d..83ea2d37978d 100644 --- a/hw/block/meson.build +++ b/hw/block/meson.build @@ -13,7 +13,7 @@ softmmu_ss.add(when: 'CONFIG_SSI_M25P80', if_true: files('m25p80.c')) softmmu_ss.add(when: 'CONFIG_SWIM', if_true: files('swim.c')) softmmu_ss.add(when: 'CONFIG_XEN', if_true: files('xen-block.c')) softmmu_ss.add(when: 'CONFIG_SH4', if_true: files('tc58128.c')) -softmmu_ss.add(when: 'CONFIG_NVME_PCI', if_true: files('nvme.c', 'nvme-ns.c')) +softmmu_ss.add(when: 'CONFIG_NVME_PCI', if_true: files('nvme.c', 'nvme-ns.c', 'nvme-subsys.c')) specific_ss.add(when: 'CONFIG_VIRTIO_BLK', if_true: files('virtio-blk.c')) specific_ss.add(when: 'CONFIG_VHOST_USER_BLK', if_true: files('vhost-user-blk.c')) diff --git a/hw/block/nvme-subsys.c b/hw/block/nvme-subsys.c new file mode 100644 index 000000000000..f1dc71d588d9 --- /dev/null +++ b/hw/block/nvme-subsys.c @@ -0,0 +1,63 @@ +/* + * QEMU NVM Express Subsystem: nvme-subsys + * + * Copyright (c) 2021 Minwoo Im + * + * This code is licensed under the GNU GPL v2. Refer COPYING. + */ + +#include "qemu/units.h" +#include "qemu/osdep.h" +#include "qemu/uuid.h" +#include "qemu/iov.h" +#include "qemu/cutils.h" +#include "qapi/error.h" +#include "hw/qdev-properties.h" +#include "hw/qdev-core.h" +#include "hw/block/block.h" +#include "block/aio.h" +#include "block/accounting.h" +#include "sysemu/sysemu.h" +#include "hw/pci/pci.h" +#include "nvme.h" +#include "nvme-subsys.h" + +static void nvme_subsys_setup(NvmeSubsystem *subsys) +{ + char *subnqn; + + subnqn = g_strdup_printf("nqn.2019-08.org.qemu:%s", subsys->parent_obj.id); + strpadcpy((char *)subsys->subnqn, sizeof(subsys->subnqn), subnqn, '\0'); + g_free(subnqn); +} + +static void nvme_subsys_realize(DeviceState *dev, Error **errp) +{ + NvmeSubsystem *subsys = NVME_SUBSYS(dev); + + nvme_subsys_setup(subsys); +} + +static void nvme_subsys_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); + + dc->realize = nvme_subsys_realize; + dc->desc = "Virtual NVMe subsystem"; +} + +static const TypeInfo nvme_subsys_info = { + .name = TYPE_NVME_SUBSYS, + .parent = TYPE_DEVICE, + .class_init = nvme_subsys_class_init, + .instance_size = sizeof(NvmeSubsystem), +}; + +static void nvme_subsys_register_types(void) +{ + type_register_static(&nvme_subsys_info); +} + +type_init(nvme_subsys_register_types) diff --git a/hw/block/nvme-subsys.h b/hw/block/nvme-subsys.h new file mode 100644 index 000000000000..40f06a4c7db0 --- /dev/null +++ b/hw/block/nvme-subsys.h @@ -0,0 +1,25 @@ +/* + * QEMU NVM Express Subsystem: nvme-subsys + * + * Copyright (c) 2021 Minwoo Im + * + * This code is licensed under the GNU GPL v2. Refer COPYING. + */ + +#ifndef NVME_SUBSYS_H +#define NVME_SUBSYS_H + +#define TYPE_NVME_SUBSYS "nvme-subsys" +#define NVME_SUBSYS(obj) \ + OBJECT_CHECK(NvmeSubsystem, (obj), TYPE_NVME_SUBSYS) + +#define NVME_SUBSYS_MAX_CTRLS 32 + +typedef struct NvmeCtrl NvmeCtrl; +typedef struct NvmeNamespace NvmeNamespace; +typedef struct NvmeSubsystem { + DeviceState parent_obj; + uint8_t subnqn[256]; +} NvmeSubsystem; + +#endif /* NVME_SUBSYS_H */ diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 21aec90637fa..aabccdf36f4b 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -25,6 +25,7 @@ * mdts=,zoned.append_size_limit= \ * -device nvme-ns,drive=,bus=,nsid=,\ * zoned= + * -device nvme-subsys,id= * * Note cmb_size_mb denotes size of CMB in MB. CMB is assumed to be at * offset 0 in BAR2 and supports only WDS, RDS and SQS for now. By default, the @@ -38,6 +39,8 @@ * * The PMR will use BAR 4/5 exclusively. * + * To place controller(s) and namespace(s) to a subsystem, then provide + * nvme-subsys device as above. * * nvme device parameters * ~~~~~~~~~~~~~~~~~~~~~~