From patchwork Wed Dec 2 07:20:56 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 7743301 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DC02FBEEE5 for ; Wed, 2 Dec 2015 07:27:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EED22206E0 for ; Wed, 2 Dec 2015 07:27:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A43A206C0 for ; Wed, 2 Dec 2015 07:27:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755989AbbLBH1U (ORCPT ); Wed, 2 Dec 2015 02:27:20 -0500 Received: from mga14.intel.com ([192.55.52.115]:9114 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754535AbbLBH1S (ORCPT ); Wed, 2 Dec 2015 02:27:18 -0500 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP; 01 Dec 2015 23:27:18 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,371,1444719600"; d="scan'208";a="698574865" Received: from xiaoreal1.sh.intel.com (HELO xiaoreal1.sh.intel.com.sh.intel.com) ([10.239.48.79]) by orsmga003.jf.intel.com with ESMTP; 01 Dec 2015 23:27:17 -0800 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Cc: gleb@kernel.org, mtosatti@redhat.com, stefanha@redhat.com, mst@redhat.com, rth@twiddle.net, ehabkost@redhat.com, dan.j.williams@intel.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, Xiao Guangrong Subject: [PATCH v9 1/5] nvdimm: implement NVDIMM device abstract Date: Wed, 2 Dec 2015 15:20:56 +0800 Message-Id: <1449040860-19040-2-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1449040860-19040-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1449040860-19040-1-git-send-email-guangrong.xiao@linux.intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce "nvdimm" device which is based on pc-dimm device type Currently, nothing is specific for nvdimm but hotplug is disabled Reviewed-by: Stefan Hajnoczi Signed-off-by: Xiao Guangrong --- default-configs/i386-softmmu.mak | 1 + default-configs/x86_64-softmmu.mak | 1 + hw/acpi/memory_hotplug.c | 5 +++++ hw/mem/Makefile.objs | 1 + hw/mem/nvdimm.c | 46 ++++++++++++++++++++++++++++++++++++++ include/hw/mem/nvdimm.h | 29 ++++++++++++++++++++++++ 6 files changed, 83 insertions(+) create mode 100644 hw/mem/nvdimm.c create mode 100644 include/hw/mem/nvdimm.h diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak index 43c96d1..4c79d3b 100644 --- a/default-configs/i386-softmmu.mak +++ b/default-configs/i386-softmmu.mak @@ -46,6 +46,7 @@ CONFIG_APIC=y CONFIG_IOAPIC=y CONFIG_PVPANIC=y CONFIG_MEM_HOTPLUG=y +CONFIG_NVDIMM=y CONFIG_XIO3130=y CONFIG_IOH3420=y CONFIG_I82801B11=y diff --git a/default-configs/x86_64-softmmu.mak b/default-configs/x86_64-softmmu.mak index dfb8095..e42d2fc 100644 --- a/default-configs/x86_64-softmmu.mak +++ b/default-configs/x86_64-softmmu.mak @@ -46,6 +46,7 @@ CONFIG_APIC=y CONFIG_IOAPIC=y CONFIG_PVPANIC=y CONFIG_MEM_HOTPLUG=y +CONFIG_NVDIMM=y CONFIG_XIO3130=y CONFIG_IOH3420=y CONFIG_I82801B11=y diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c index e4b9a01..298e868 100644 --- a/hw/acpi/memory_hotplug.c +++ b/hw/acpi/memory_hotplug.c @@ -231,6 +231,11 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st, DeviceState *dev, Error **errp) { MemStatus *mdev; + DeviceClass *dc = DEVICE_GET_CLASS(dev); + + if (!dc->hotpluggable) { + return; + } mdev = acpi_memory_slot_status(mem_st, dev, errp); if (!mdev) { diff --git a/hw/mem/Makefile.objs b/hw/mem/Makefile.objs index b000fb4..f12f8b9 100644 --- a/hw/mem/Makefile.objs +++ b/hw/mem/Makefile.objs @@ -1 +1,2 @@ common-obj-$(CONFIG_MEM_HOTPLUG) += pc-dimm.o +common-obj-$(CONFIG_NVDIMM) += nvdimm.o diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c new file mode 100644 index 0000000..4fd397f --- /dev/null +++ b/hw/mem/nvdimm.c @@ -0,0 +1,46 @@ +/* + * Non-Volatile Dual In-line Memory Module Virtualization Implementation + * + * Copyright(C) 2015 Intel Corporation. + * + * Author: + * Xiao Guangrong + * + * Currently, it only supports PMEM Virtualization. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + */ + +#include "hw/mem/nvdimm.h" + +static void nvdimm_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + /* nvdimm hotplug has not been supported yet. */ + dc->hotpluggable = false; +} + +static TypeInfo nvdimm_info = { + .name = TYPE_NVDIMM, + .parent = TYPE_PC_DIMM, + .class_init = nvdimm_class_init, +}; + +static void nvdimm_register_types(void) +{ + type_register_static(&nvdimm_info); +} + +type_init(nvdimm_register_types) diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h new file mode 100644 index 0000000..dbfa8d6 --- /dev/null +++ b/include/hw/mem/nvdimm.h @@ -0,0 +1,29 @@ +/* + * Non-Volatile Dual In-line Memory Module Virtualization Implementation + * + * Copyright(C) 2015 Intel Corporation. + * + * Author: + * Xiao Guangrong + * + * NVDIMM specifications and some documents can be found at: + * NVDIMM ACPI device and NFIT are introduced in ACPI 6: + * http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf + * NVDIMM Namespace specification: + * http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf + * DSM Interface Example: + * http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf + * Driver Writer's Guide: + * http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_NVDIMM_H +#define QEMU_NVDIMM_H + +#include "hw/mem/pc-dimm.h" + +#define TYPE_NVDIMM "nvdimm" +#endif